vfio/iommufd: Implement [at|de]tach_hwpt handlers

Implement [at|de]tach_hwpt handlers in VFIO subsystem. vIOMMU
utilizes them to attach to or detach from hwpt on host side.

Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Link: https://lore.kernel.org/qemu-devel/20250604062115.4004200-4-zhenzhong.duan@intel.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>

diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c
index 625b1747a29648918298e3a6cb3af68c5459ead5..59033028373c82a22b1aaf092503d037a6d7e9b6 100644 (file)
--- a/hw/vfio/iommufd.c
+++ b/hw/vfio/iommufd.c
@@ -815,6 +815,24 @@ static void vfio_iommu_iommufd_class_init(ObjectClass *klass, const void *data)
     vioc->query_dirty_bitmap = iommufd_query_dirty_bitmap;
 };
 
+static bool
+host_iommu_device_iommufd_vfio_attach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
+                                           uint32_t hwpt_id, Error **errp)
+{
+    VFIODevice *vbasedev = HOST_IOMMU_DEVICE(idev)->agent;
+
+    return !iommufd_cdev_attach_ioas_hwpt(vbasedev, hwpt_id, errp);
+}
+
+static bool
+host_iommu_device_iommufd_vfio_detach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
+                                           Error **errp)
+{
+    VFIODevice *vbasedev = HOST_IOMMU_DEVICE(idev)->agent;
+
+    return iommufd_cdev_detach_ioas_hwpt(vbasedev, errp);
+}
+
 static bool hiod_iommufd_vfio_realize(HostIOMMUDevice *hiod, void *opaque,
                                       Error **errp)
 {
@@ -869,10 +887,14 @@ hiod_iommufd_vfio_get_page_size_mask(HostIOMMUDevice *hiod)
 static void hiod_iommufd_vfio_class_init(ObjectClass *oc, const void *data)
 {
     HostIOMMUDeviceClass *hiodc = HOST_IOMMU_DEVICE_CLASS(oc);
+    HostIOMMUDeviceIOMMUFDClass *idevc = HOST_IOMMU_DEVICE_IOMMUFD_CLASS(oc);
 
     hiodc->realize = hiod_iommufd_vfio_realize;
     hiodc->get_iova_ranges = hiod_iommufd_vfio_get_iova_ranges;
     hiodc->get_page_size_mask = hiod_iommufd_vfio_get_page_size_mask;
+
+    idevc->attach_hwpt = host_iommu_device_iommufd_vfio_attach_hwpt;
+    idevc->detach_hwpt = host_iommu_device_iommufd_vfio_detach_hwpt;
 };
 
 static const TypeInfo types[] = {