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authorJoerg Roedel <jroedel@suse.de>2015-07-28 16:58:49 +0200
committerJoerg Roedel <jroedel@suse.de>2015-07-30 10:28:48 +0200
commit02ca20212f0dde5c90be8de19cc159726b5561aa (patch)
treee217365b8715cbc20807285e279374b30f705268 /drivers/iommu/amd_iommu.c
parentiommu/amd: Use iommu core for passthrough mode (diff)
downloadlinux-02ca20212f0dde5c90be8de19cc159726b5561aa.tar.xz
linux-02ca20212f0dde5c90be8de19cc159726b5561aa.zip
iommu/amd: Allow non-IOMMUv2 devices in IOMMUv2 domains
Since devices with IOMMUv2 functionality might be in the same group as devices without it, allow those devices in IOMMUv2 domains too. Otherwise attaching the group with the IOMMUv2 device to the domain will fail. Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd_iommu.c')
-rw-r--r--drivers/iommu/amd_iommu.c16
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 89e6d4b2cdb6..6d3dae962867 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2164,15 +2164,17 @@ static int attach_device(struct device *dev,
dev_data = get_dev_data(dev);
if (domain->flags & PD_IOMMUV2_MASK) {
- if (!dev_data->iommu_v2 || !dev_data->passthrough)
+ if (!dev_data->passthrough)
return -EINVAL;
- if (pdev_iommuv2_enable(pdev) != 0)
- return -EINVAL;
+ if (dev_data->iommu_v2) {
+ if (pdev_iommuv2_enable(pdev) != 0)
+ return -EINVAL;
- dev_data->ats.enabled = true;
- dev_data->ats.qdep = pci_ats_queue_depth(pdev);
- dev_data->pri_tlp = pci_pri_tlp_required(pdev);
+ dev_data->ats.enabled = true;
+ dev_data->ats.qdep = pci_ats_queue_depth(pdev);
+ dev_data->pri_tlp = pci_pri_tlp_required(pdev);
+ }
} else if (amd_iommu_iotlb_sup &&
pci_enable_ats(pdev, PAGE_SHIFT) == 0) {
dev_data->ats.enabled = true;
@@ -2237,7 +2239,7 @@ static void detach_device(struct device *dev)
__detach_device(dev_data);
write_unlock_irqrestore(&amd_iommu_devtable_lock, flags);
- if (domain->flags & PD_IOMMUV2_MASK)
+ if (domain->flags & PD_IOMMUV2_MASK && dev_data->iommu_v2)
pdev_iommuv2_disable(to_pci_dev(dev));
else if (dev_data->ats.enabled)
pci_disable_ats(to_pci_dev(dev));