27     IOMMUFDBackend *be = IOMMUFD_BACKEND(obj);  in iommufd_backend_init()  local
29     be->fd = -1;  in iommufd_backend_init()
30     be->users = 0;  in iommufd_backend_init()
31     be->owned = true;  in iommufd_backend_init()
36     IOMMUFDBackend *be = IOMMUFD_BACKEND(obj);  in iommufd_backend_finalize()  local
38     if (be->owned) {  in iommufd_backend_finalize()
39         close(be->fd);  in iommufd_backend_finalize()
40         be->fd = -1;  in iommufd_backend_finalize()
47     IOMMUFDBackend *be = IOMMUFD_BACKEND(obj);  in iommufd_backend_set_fd()  local
55     be->fd = fd;  in iommufd_backend_set_fd()
56     be->owned = false;  in iommufd_backend_set_fd()
57     trace_iommu_backend_set_fd(be->fd);  in iommufd_backend_set_fd()
62     IOMMUFDBackend *be = IOMMUFD_BACKEND(uc);  in iommufd_backend_can_be_deleted()  local
64     return !be->users;  in iommufd_backend_can_be_deleted()
76 bool iommufd_backend_connect(IOMMUFDBackend *be, Error **errp)  in iommufd_backend_connect()  argument
80     if (be->owned && !be->users) {  in iommufd_backend_connect()
85         be->fd = fd;  in iommufd_backend_connect()
87     be->users++;  in iommufd_backend_connect()
89     trace_iommufd_backend_connect(be->fd, be->owned, be->users);  in iommufd_backend_connect()
93 void iommufd_backend_disconnect(IOMMUFDBackend *be)  in iommufd_backend_disconnect()  argument
95     if (!be->users) {  in iommufd_backend_disconnect()
98     be->users--;  in iommufd_backend_disconnect()
99     if (!be->users && be->owned) {  in iommufd_backend_disconnect()
100         close(be->fd);  in iommufd_backend_disconnect()
101         be->fd = -1;  in iommufd_backend_disconnect()
104     trace_iommufd_backend_disconnect(be->fd, be->users);  in iommufd_backend_disconnect()
107 bool iommufd_backend_alloc_ioas(IOMMUFDBackend *be, uint32_t *ioas_id,  in iommufd_backend_alloc_ioas()  argument
110     int fd = be->fd;  in iommufd_backend_alloc_ioas()
127 void iommufd_backend_free_id(IOMMUFDBackend *be, uint32_t id)  in iommufd_backend_free_id()  argument
129     int ret, fd = be->fd;  in iommufd_backend_free_id()
142 int iommufd_backend_map_dma(IOMMUFDBackend *be, uint32_t ioas_id, hwaddr iova,  in iommufd_backend_map_dma()  argument
145     int ret, fd = be->fd;  in iommufd_backend_map_dma()
177 int iommufd_backend_unmap_dma(IOMMUFDBackend *be, uint32_t ioas_id,  in iommufd_backend_unmap_dma()  argument
180     int ret, fd = be->fd;  in iommufd_backend_unmap_dma()
211 bool iommufd_backend_alloc_hwpt(IOMMUFDBackend *be, uint32_t dev_id,  in iommufd_backend_alloc_hwpt()  argument
217     int ret, fd = be->fd;  in iommufd_backend_alloc_hwpt()
241 bool iommufd_backend_set_dirty_tracking(IOMMUFDBackend *be,  in iommufd_backend_set_dirty_tracking()  argument
252     ret = ioctl(be->fd, IOMMU_HWPT_SET_DIRTY_TRACKING, &set_dirty);  in iommufd_backend_set_dirty_tracking()
253     trace_iommufd_backend_set_dirty(be->fd, hwpt_id, start, ret ? errno : 0);  in iommufd_backend_set_dirty_tracking()
264 bool iommufd_backend_get_dirty_bitmap(IOMMUFDBackend *be,  in iommufd_backend_get_dirty_bitmap()  argument
280     ret = ioctl(be->fd, IOMMU_HWPT_GET_DIRTY_BITMAP, &get_dirty_bitmap);  in iommufd_backend_get_dirty_bitmap()
281     trace_iommufd_backend_get_dirty_bitmap(be->fd, hwpt_id, iova, size,  in iommufd_backend_get_dirty_bitmap()
293 bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid,  in iommufd_backend_get_device_info()  argument
304     if (ioctl(be->fd, IOMMU_GET_HW_INFO, &info)) {  in iommufd_backend_get_device_info()