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iommu: Move dev_iommu_ops() to private header

Browse source 
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: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Yi Liu 2023-08-18 03:10:29 -07:00 committed by Jason Gunthorpe
parent 65aaca1134
commit 92766e1b95
2 changed files with 11 additions and 11 deletions
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11
drivers/iommu/iommu-priv.h
View file

@ -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);

11
include/linux/iommu.h
View file

@ -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);