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iommu: Introduce accessors for iommu private data

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Add dev_iommu_priv_get/set() functions to access per-device iommu
private data. This makes it easier to move the pointer to a different
location.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Tested-by: Will Deacon <will@kernel.org> # arm-smmu
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Link: https://lore.kernel.org/r/20200326150841.10083-9-joro@8bytes.org
This commit is contained in:
Joerg Roedel 2020-03-26 16:08:33 +01:00
parent 0b242ebbb7
commit f9867f416e
1 changed files with 10 additions and 0 deletions
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10
include/linux/iommu.h
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@ -627,6 +627,16 @@ static inline void dev_iommu_fwspec_set(struct device *dev,
dev->iommu->fwspec = fwspec;
}
static inline void *dev_iommu_priv_get(struct device *dev)
{
return dev->iommu->fwspec->iommu_priv;
}
static inline void dev_iommu_priv_set(struct device *dev, void *priv)
{
dev->iommu->fwspec->iommu_priv = priv;
}
int iommu_probe_device(struct device *dev);
void iommu_release_device(struct device *dev);