| Message ID | 20220221154344.2126-11-shameerali.kolothum.thodi@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ACPI/IORT: Support for IORT RMR node | expand |
On 2022-02-21 15:43, Shameer Kolothum wrote: > Get ACPI IORT RMR regions associated with a dev reserved > so that there is a unity mapping for them in SMMU. > > Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> > --- > drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 13 ++++++++++++- > 1 file changed, 12 insertions(+), 1 deletion(-) > > diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c > index dee3197474b7..ef2972483fd7 100644 > --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c > +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c > @@ -2759,6 +2759,7 @@ static void arm_smmu_get_resv_regions(struct device *dev, > { > struct iommu_resv_region *region; > int prot = IOMMU_WRITE | IOMMU_NOEXEC | IOMMU_MMIO; > + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); > > region = iommu_alloc_resv_region(MSI_IOVA_BASE, MSI_IOVA_LENGTH, > prot, IOMMU_RESV_SW_MSI); > @@ -2768,6 +2769,16 @@ static void arm_smmu_get_resv_regions(struct device *dev, > list_add_tail(®ion->list, head); > > iommu_dma_get_resv_regions(dev, head); > + iommu_dma_get_rmrs(fwspec->iommu_fwnode, dev, head); > +} > + > +static void arm_smmu_put_resv_regions(struct device *dev, > + struct list_head *head) > +{ > + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); > + > + iommu_dma_put_rmrs(fwspec->iommu_fwnode, head); > + generic_iommu_put_resv_regions(dev, head); > } Tying in with my comment on patch #5, this should be a common iommu_dma_put_resv_regions() helper. Thanks, Robin. > static bool arm_smmu_dev_has_feature(struct device *dev, > @@ -2865,7 +2876,7 @@ static struct iommu_ops arm_smmu_ops = { > .enable_nesting = arm_smmu_enable_nesting, > .of_xlate = arm_smmu_of_xlate, > .get_resv_regions = arm_smmu_get_resv_regions, > - .put_resv_regions = generic_iommu_put_resv_regions, > + .put_resv_regions = arm_smmu_put_resv_regions, > .dev_has_feat = arm_smmu_dev_has_feature, > .dev_feat_enabled = arm_smmu_dev_feature_enabled, > .dev_enable_feat = arm_smmu_dev_enable_feature,
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index dee3197474b7..ef2972483fd7 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2759,6 +2759,7 @@ static void arm_smmu_get_resv_regions(struct device *dev, { struct iommu_resv_region *region; int prot = IOMMU_WRITE | IOMMU_NOEXEC | IOMMU_MMIO; + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); region = iommu_alloc_resv_region(MSI_IOVA_BASE, MSI_IOVA_LENGTH, prot, IOMMU_RESV_SW_MSI); @@ -2768,6 +2769,16 @@ static void arm_smmu_get_resv_regions(struct device *dev, list_add_tail(®ion->list, head); iommu_dma_get_resv_regions(dev, head); + iommu_dma_get_rmrs(fwspec->iommu_fwnode, dev, head); +} + +static void arm_smmu_put_resv_regions(struct device *dev, + struct list_head *head) +{ + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); + + iommu_dma_put_rmrs(fwspec->iommu_fwnode, head); + generic_iommu_put_resv_regions(dev, head); } static bool arm_smmu_dev_has_feature(struct device *dev, @@ -2865,7 +2876,7 @@ static struct iommu_ops arm_smmu_ops = { .enable_nesting = arm_smmu_enable_nesting, .of_xlate = arm_smmu_of_xlate, .get_resv_regions = arm_smmu_get_resv_regions, - .put_resv_regions = generic_iommu_put_resv_regions, + .put_resv_regions = arm_smmu_put_resv_regions, .dev_has_feat = arm_smmu_dev_has_feature, .dev_feat_enabled = arm_smmu_dev_feature_enabled, .dev_enable_feat = arm_smmu_dev_enable_feature,
Get ACPI IORT RMR regions associated with a dev reserved so that there is a unity mapping for them in SMMU. Signed-off-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)