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Commit 1fa02ac9 authored by Ohad Ben-Cohen's avatar Ohad Ben-Cohen
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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: default avatarOhad Ben-Cohen <ohad@wizery.com>
Acked-by: default avatarTony Lindgren <tony@atomide.com>
Cc: Hiroshi Doyu <hdoyu@nvidia.com>
parent cfcfc9ec

arch/arm/plat-omap/include/plat/iommu.h

+26 −0
Original line number Diff line number Diff line
@@ -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)