Merge branches 'iommu/page-sizes' and 'iommu/group-id' into next

[karo-tx-linux.git] / drivers / iommu / amd_iommu.c

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index edd291070b0b926357b868858ec5023504228977..cce1f03b8895324d7d6e92cd6094cc39e7673cbe 100644 (file)
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3188,6 +3188,26 @@ static int amd_iommu_domain_has_cap(struct iommu_domain *domain,
        return 0;
 }
 
+static int amd_iommu_device_group(struct device *dev, unsigned int *groupid)
+{
+       struct iommu_dev_data *dev_data = dev->archdata.iommu;
+       struct pci_dev *pdev = to_pci_dev(dev);
+       u16 devid;
+
+       if (!dev_data)
+               return -ENODEV;
+
+       if (pdev->is_virtfn || !iommu_group_mf)
+               devid = dev_data->devid;
+       else
+               devid = calc_devid(pdev->bus->number,
+                                  PCI_DEVFN(PCI_SLOT(pdev->devfn), 0));
+
+       *groupid = amd_iommu_alias_table[devid];
+
+       return 0;
+}
+
 static struct iommu_ops amd_iommu_ops = {
        .domain_init = amd_iommu_domain_init,
        .domain_destroy = amd_iommu_domain_destroy,
@@ -3197,6 +3217,7 @@ static struct iommu_ops amd_iommu_ops = {
        .unmap = amd_iommu_unmap,
        .iova_to_phys = amd_iommu_iova_to_phys,
        .domain_has_cap = amd_iommu_domain_has_cap,
+       .device_group = amd_iommu_device_group,
        .pgsize_bitmap  = AMD_IOMMU_PGSIZES,
 };