[PATCH v2 08/10] vfio: Create host IOMMU device instance

[Zhenzhong Duan <zhenzhong.duan@intel.com>]

Create host IOMMU device instance and initialize it based on backend.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
---
 include/hw/vfio/vfio-common.h | 1 +
 hw/vfio/container.c           | 5 +++++
 hw/vfio/iommufd.c             | 8 ++++++++
 3 files changed, 14 insertions(+)

diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index d382b12ec1..4fbba85018 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -126,6 +126,7 @@ typedef struct VFIODevice {
     OnOffAuto pre_copy_dirty_page_tracking;
     bool dirty_pages_supported;
     bool dirty_tracking;
+    HostIOMMUDevice *hiod;
     int devid;
     IOMMUFDBackend *iommufd;
 } VFIODevice;
diff --git a/hw/vfio/container.c b/hw/vfio/container.c
index ba0ad4a41b..fc0c027501 100644
--- a/hw/vfio/container.c
+++ b/hw/vfio/container.c
@@ -915,6 +915,7 @@ static int vfio_legacy_attach_device(const char *name, VFIODevice *vbasedev,
     VFIODevice *vbasedev_iter;
     VFIOGroup *group;
     VFIOContainerBase *bcontainer;
+    HIODLegacyVFIO *hiod_vfio;
     int ret;
 
     if (groupid < 0) {
@@ -945,6 +946,9 @@ static int vfio_legacy_attach_device(const char *name, VFIODevice *vbasedev,
     vbasedev->bcontainer = bcontainer;
     QLIST_INSERT_HEAD(&bcontainer->device_list, vbasedev, container_next);
     QLIST_INSERT_HEAD(&vfio_device_list, vbasedev, global_next);
+    hiod_vfio = HIOD_LEGACY_VFIO(object_new(TYPE_HIOD_LEGACY_VFIO));
+    hiod_vfio->vdev = vbasedev;
+    vbasedev->hiod = HOST_IOMMU_DEVICE(hiod_vfio);
 
     return ret;
 }
@@ -959,6 +963,7 @@ static void vfio_legacy_detach_device(VFIODevice *vbasedev)
     trace_vfio_detach_device(vbasedev->name, group->groupid);
     vfio_put_base_device(vbasedev);
     vfio_put_group(group);
+    object_unref(vbasedev->hiod);
 }
 
 static int vfio_legacy_pci_hot_reset(VFIODevice *vbasedev, bool single)
diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c
index 115b9f8e7f..b6d058339b 100644
--- a/hw/vfio/iommufd.c
+++ b/hw/vfio/iommufd.c
@@ -308,6 +308,7 @@ static int iommufd_cdev_attach(const char *name, VFIODevice *vbasedev,
     VFIOIOMMUFDContainer *container;
     VFIOAddressSpace *space;
     struct vfio_device_info dev_info = { .argsz = sizeof(dev_info) };
+    HIODIOMMUFDVFIO *hiod_vfio;
     int ret, devfd;
     uint32_t ioas_id;
     Error *err = NULL;
@@ -431,6 +432,12 @@ found_container:
     QLIST_INSERT_HEAD(&bcontainer->device_list, vbasedev, container_next);
     QLIST_INSERT_HEAD(&vfio_device_list, vbasedev, global_next);
 
+    hiod_vfio = HIOD_IOMMUFD_VFIO(object_new(TYPE_HIOD_IOMMUFD_VFIO));
+    hiod_iommufd_init(HIOD_IOMMUFD(hiod_vfio), vbasedev->iommufd,
+                      vbasedev->devid);
+    hiod_vfio->vdev = vbasedev;
+    vbasedev->hiod = HOST_IOMMU_DEVICE(hiod_vfio);
+
     trace_iommufd_cdev_device_info(vbasedev->name, devfd, vbasedev->num_irqs,
                                    vbasedev->num_regions, vbasedev->flags);
     return 0;
@@ -468,6 +475,7 @@ static void iommufd_cdev_detach(VFIODevice *vbasedev)
     iommufd_cdev_detach_container(vbasedev, container);
     iommufd_cdev_container_destroy(container);
     vfio_put_address_space(space);
+    object_unref(vbasedev->hiod);
 
     iommufd_cdev_unbind_and_disconnect(vbasedev);
     close(vbasedev->fd);
-- 
2.34.1