| Message ID | d6be59d4f90d997e24dc4c496c0247626e46415f.1587400573.git.saiprakash.ranjan@codeaurora.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | iommu/arm-smmu: Allow client devices to select identity mapping | expand |
On 2020-04-20 5:42 pm, Sai Prakash Ranjan wrote: > Implement the new def_domain_type call-back for the ARM > SMMU driver. We need this to support requesting the domain > type by the client devices. Modulo any further changes to the default domain rework, Reviewed-by: Robin Murphy <robin.murphy@arm.com> > Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> > --- > drivers/iommu/arm-smmu.c | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c > index e622f4e33379..b345a86085ce 100644 > --- a/drivers/iommu/arm-smmu.c > +++ b/drivers/iommu/arm-smmu.c > @@ -1609,6 +1609,17 @@ static void arm_smmu_get_resv_regions(struct device *dev, > iommu_dma_get_resv_regions(dev, head); > } > > +static int arm_smmu_def_domain_type(struct device *dev) > +{ > + struct arm_smmu_master_cfg *cfg = dev_iommu_priv_get(dev); > + const struct arm_smmu_impl *impl = cfg->smmu->impl; > + > + if (impl && impl->def_domain_type) > + return impl->def_domain_type(dev); > + > + return 0; > +} > + > static struct iommu_ops arm_smmu_ops = { > .capable = arm_smmu_capable, > .domain_alloc = arm_smmu_domain_alloc, > @@ -1627,6 +1638,7 @@ static struct iommu_ops arm_smmu_ops = { > .of_xlate = arm_smmu_of_xlate, > .get_resv_regions = arm_smmu_get_resv_regions, > .put_resv_regions = generic_iommu_put_resv_regions, > + .def_domain_type = arm_smmu_def_domain_type, > .pgsize_bitmap = -1UL, /* Restricted during device attach */ > }; > >
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index e622f4e33379..b345a86085ce 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1609,6 +1609,17 @@ static void arm_smmu_get_resv_regions(struct device *dev, iommu_dma_get_resv_regions(dev, head); } +static int arm_smmu_def_domain_type(struct device *dev) +{ + struct arm_smmu_master_cfg *cfg = dev_iommu_priv_get(dev); + const struct arm_smmu_impl *impl = cfg->smmu->impl; + + if (impl && impl->def_domain_type) + return impl->def_domain_type(dev); + + return 0; +} + static struct iommu_ops arm_smmu_ops = { .capable = arm_smmu_capable, .domain_alloc = arm_smmu_domain_alloc, @@ -1627,6 +1638,7 @@ static struct iommu_ops arm_smmu_ops = { .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, .put_resv_regions = generic_iommu_put_resv_regions, + .def_domain_type = arm_smmu_def_domain_type, .pgsize_bitmap = -1UL, /* Restricted during device attach */ };
Implement the new def_domain_type call-back for the ARM SMMU driver. We need this to support requesting the domain type by the client devices. Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> --- drivers/iommu/arm-smmu.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)