Commit 92766e1b authored by Yi Liu's avatar Yi Liu Committed by Jason Gunthorpe
Browse files

iommu: Move dev_iommu_ops() to private header 

dev_iommu_ops() is essentially only used in iommu subsystem, so move to a
private header to avoid being abused by other drivers.

Link: https://lore.kernel.org/r/20230818101033.4100-2-yi.l.liu@intel.com


Suggested-by: default avatarJason Gunthorpe <jgg@nvidia.com>
Reviewed-by: default avatarKevin Tian <kevin.tian@intel.com>
Reviewed-by: default avatarLu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: default avatarJason Gunthorpe <jgg@nvidia.com>
Signed-off-by: default avatarYi Liu <yi.l.liu@intel.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent 65aaca11

drivers/iommu/iommu-priv.h

+11 −0
Original line number Diff line number Diff line
@@ -6,6 +6,17 @@ 


#include <linux/iommu.h>



static inline const struct iommu_ops *dev_iommu_ops(struct device *dev)

{

	/*

	 * Assume that valid ops must be installed if iommu_probe_device()

	 * has succeeded. The device ops are essentially for internal use

	 * within the IOMMU subsystem itself, so we should be able to trust

	 * ourselves not to misuse the helper.

	 */

	return dev->iommu->iommu_dev->ops;

}



int iommu_group_replace_domain(struct iommu_group *group,

			       struct iommu_domain *new_domain);

include/linux/iommu.h

+0 −11
Original line number Diff line number Diff line
@@ -450,17 +450,6 @@ static inline void iommu_iotlb_gather_init(struct iommu_iotlb_gather *gather) 
	};

}



static inline const struct iommu_ops *dev_iommu_ops(struct device *dev)

{

	/*

	 * Assume that valid ops must be installed if iommu_probe_device()

	 * has succeeded. The device ops are essentially for internal use

	 * within the IOMMU subsystem itself, so we should be able to trust

	 * ourselves not to misuse the helper.

	 */

	return dev->iommu->iommu_dev->ops;

}



extern int bus_iommu_probe(const struct bus_type *bus);

extern bool iommu_present(const struct bus_type *bus);

extern bool device_iommu_capable(struct device *dev, enum iommu_cap cap);