iommu/amd: Use iommu_attach_group()

Since the conversion to default domains the
iommu_attach_device function only works for devices with
their own group. But this isn't always true for current
IOMMUv2 capable devices, so use iommu_attach_group instead.

Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
index 3465faf..f7b875b 100644 (file)
--- a/drivers/iommu/amd_iommu_v2.c
+++ b/drivers/iommu/amd_iommu_v2.c
@@ -132,11 +132,19 @@ static struct device_state *get_device_state(u16 devid)
 
 static void free_device_state(struct device_state *dev_state)
 {
+       struct iommu_group *group;
+
        /*
         * First detach device from domain - No more PRI requests will arrive
         * from that device after it is unbound from the IOMMUv2 domain.
         */
-       iommu_detach_device(dev_state->domain, &dev_state->pdev->dev);
+       group = iommu_group_get(&dev_state->pdev->dev);
+       if (WARN_ON(!group))
+               return;
+
+       iommu_detach_group(dev_state->domain, group);
+
+       iommu_group_put(group);
 
        /* Everything is down now, free the IOMMUv2 domain */
        iommu_domain_free(dev_state->domain);
@@ -731,6 +739,7 @@ EXPORT_SYMBOL(amd_iommu_unbind_pasid);
 int amd_iommu_init_device(struct pci_dev *pdev, int pasids)
 {
        struct device_state *dev_state;
+       struct iommu_group *group;
        unsigned long flags;
        int ret, tmp;
        u16 devid;
@@ -776,10 +785,16 @@ int amd_iommu_init_device(struct pci_dev *pdev, int pasids)
        if (ret)
                goto out_free_domain;
 
-       ret = iommu_attach_device(dev_state->domain, &pdev->dev);
-       if (ret != 0)
+       group = iommu_group_get(&pdev->dev);
+       if (!group)
                goto out_free_domain;
 
+       ret = iommu_attach_group(dev_state->domain, group);
+       if (ret != 0)
+               goto out_drop_group;
+
+       iommu_group_put(group);
+
        spin_lock_irqsave(&state_lock, flags);
 
        if (__get_device_state(devid) != NULL) {
@@ -794,6 +809,9 @@ int amd_iommu_init_device(struct pci_dev *pdev, int pasids)
 
        return 0;
 
+out_drop_group:
+       iommu_group_put(group);
+
 out_free_domain:
        iommu_domain_free(dev_state->domain);