@@ -256,9 +256,11 @@ static bool check_device(struct device *dev)
static int iommu_init_device(struct device *dev)
{
- struct pci_dev *pdev = to_pci_dev(dev);
+ struct pci_dev *dma_pdev, *pdev = to_pci_dev(dev);
struct iommu_dev_data *dev_data;
+ struct iommu_group *group;
u16 alias;
+ int ret;
if (dev->archdata.iommu)
return 0;
@@ -279,8 +281,26 @@ static int iommu_init_device(struct device *dev)
return -ENOTSUPP;
}
dev_data->alias_data = alias_data;
+
+ dma_pdev = pci_get_bus_and_slot(alias >> 8, alias & 0xff);
+ } else
+ dma_pdev = pci_dev_get(pdev);
+
+ group = iommu_group_get(&dma_pdev->dev);
+ pci_dev_put(dma_pdev);
+ if (!group) {
+ group = iommu_group_alloc();
+ if (IS_ERR(group))
+ return PTR_ERR(group);
}
+ ret = iommu_group_add_device(group, dev);
+
+ iommu_group_put(group);
+
+ if (ret)
+ return ret;
+
if (pci_iommuv2_capable(pdev)) {
struct amd_iommu *iommu;
@@ -309,6 +329,8 @@ static void iommu_ignore_device(struct device *dev)
static void iommu_uninit_device(struct device *dev)
{
+ iommu_group_remove_device(dev);
+
/*
* Nothing to do here - we keep dev_data around for unplugged devices
* and reuse it when the device is re-plugged - not doing so would
Add IOMMU group support to AMD-Vi device init and uninit code. Existing notifiers make sure this gets called for each device. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> --- drivers/iommu/amd_iommu.c | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html