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author | Ohad Ben-Cohen <ohad@wizery.com> | 2011-09-23 13:37:27 (GMT) |
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committer | Ohad Ben-Cohen <ohad@wizery.com> | 2011-12-05 13:43:30 (GMT) |
commit | 1fa02ac9536c9a5278e999e40e274bba62c23a4d (patch) | |
tree | 46dc370512775faba7920b8ff4e1b40c186e8dee | |
parent | cfcfc9eca2bcbd26a8e206baeb005b055dbf8e37 (diff) | |
download | linux-fsl-qoriq-1fa02ac9536c9a5278e999e40e274bba62c23a4d.tar.xz |
ARM: OMAP: iommu: declare a private iommu binding struct
Declare an omap iommu private struct, which binds an iommu user
to its iommu device. This struct should be placed at the iommu user's
dev_archdata so generic IOMMU API can be used without having to
utilize omap-specific plumbing anymore.
While at it, provide an accessor method to ease the retrieval of the
omap_iommu handle from a user device.
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Cc: Hiroshi Doyu <hdoyu@nvidia.com>
-rw-r--r-- | arch/arm/plat-omap/include/plat/iommu.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/plat/iommu.h b/arch/arm/plat-omap/include/plat/iommu.h index a1d79ee..fa11ee2 100644 --- a/arch/arm/plat-omap/include/plat/iommu.h +++ b/arch/arm/plat-omap/include/plat/iommu.h @@ -111,6 +111,32 @@ struct iommu_platform_data { u32 da_end; }; +/** + * struct iommu_arch_data - omap iommu private data + * @name: name of the iommu device + * @iommu_dev: handle of the iommu device + * + * This is an omap iommu private data object, which binds an iommu user + * to its iommu device. This object should be placed at the iommu user's + * dev_archdata so generic IOMMU API can be used without having to + * utilize omap-specific plumbing anymore. + */ +struct omap_iommu_arch_data { + const char *name; + struct omap_iommu *iommu_dev; +}; + +/** + * dev_to_omap_iommu() - retrieves an omap iommu object from a user device + * @dev: iommu client device + */ +static inline struct omap_iommu *dev_to_omap_iommu(struct device *dev) +{ + struct omap_iommu_arch_data *arch_data = dev->archdata.iommu; + + return arch_data->iommu_dev; +} + /* IOMMU errors */ #define OMAP_IOMMU_ERR_TLB_MISS (1 << 0) #define OMAP_IOMMU_ERR_TRANS_FAULT (1 << 1) |