xref: /openbmc/qemu/hw/vfio/iommufd.c (revision ef7d1adf) 
1 /*
2  * iommufd container backend
3  *
4  * Copyright (C) 2023 Intel Corporation.
5  * Copyright Red Hat, Inc. 2023
6  *
7  * Authors: Yi Liu <yi.l.liu@intel.com>
8  *          Eric Auger <eric.auger@redhat.com>
9  *
10  * SPDX-License-Identifier: GPL-2.0-or-later
11  */
12 
13 #include "qemu/osdep.h"
14 #include <sys/ioctl.h>
15 #include <linux/vfio.h>
16 #include <linux/iommufd.h>
17 
18 #include "hw/vfio/vfio-common.h"
19 #include "qemu/error-report.h"
20 #include "trace.h"
21 #include "qapi/error.h"
22 #include "sysemu/iommufd.h"
23 #include "hw/qdev-core.h"
24 #include "sysemu/reset.h"
25 #include "qemu/cutils.h"
26 #include "qemu/chardev_open.h"
27 #include "pci.h"
28 
29 static int iommufd_cdev_map(const VFIOContainerBase *bcontainer, hwaddr iova,
30                             ram_addr_t size, void *vaddr, bool readonly)
31 {
32     const VFIOIOMMUFDContainer *container =
33         container_of(bcontainer, VFIOIOMMUFDContainer, bcontainer);
34 
35     return iommufd_backend_map_dma(container->be,
36                                    container->ioas_id,
37                                    iova, size, vaddr, readonly);
38 }
39 
40 static int iommufd_cdev_unmap(const VFIOContainerBase *bcontainer,
41                               hwaddr iova, ram_addr_t size,
42                               IOMMUTLBEntry *iotlb)
43 {
44     const VFIOIOMMUFDContainer *container =
45         container_of(bcontainer, VFIOIOMMUFDContainer, bcontainer);
46 
47     /* TODO: Handle dma_unmap_bitmap with iotlb args (migration) */
48     return iommufd_backend_unmap_dma(container->be,
49                                      container->ioas_id, iova, size);
50 }
51 
52 static bool iommufd_cdev_kvm_device_add(VFIODevice *vbasedev, Error **errp)
53 {
54     return !vfio_kvm_device_add_fd(vbasedev->fd, errp);
55 }
56 
57 static void iommufd_cdev_kvm_device_del(VFIODevice *vbasedev)
58 {
59     Error *err = NULL;
60 
61     if (vfio_kvm_device_del_fd(vbasedev->fd, &err)) {
62         error_report_err(err);
63     }
64 }
65 
66 static bool iommufd_cdev_connect_and_bind(VFIODevice *vbasedev, Error **errp)
67 {
68     IOMMUFDBackend *iommufd = vbasedev->iommufd;
69     struct vfio_device_bind_iommufd bind = {
70         .argsz = sizeof(bind),
71         .flags = 0,
72     };
73 
74     if (!iommufd_backend_connect(iommufd, errp)) {
75         return false;
76     }
77 
78     /*
79      * Add device to kvm-vfio to be prepared for the tracking
80      * in KVM. Especially for some emulated devices, it requires
81      * to have kvm information in the device open.
82      */
83     if (!iommufd_cdev_kvm_device_add(vbasedev, errp)) {
84         goto err_kvm_device_add;
85     }
86 
87     /* Bind device to iommufd */
88     bind.iommufd = iommufd->fd;
89     if (ioctl(vbasedev->fd, VFIO_DEVICE_BIND_IOMMUFD, &bind)) {
90         error_setg_errno(errp, errno, "error bind device fd=%d to iommufd=%d",
91                          vbasedev->fd, bind.iommufd);
92         goto err_bind;
93     }
94 
95     vbasedev->devid = bind.out_devid;
96     trace_iommufd_cdev_connect_and_bind(bind.iommufd, vbasedev->name,
97                                         vbasedev->fd, vbasedev->devid);
98     return true;
99 err_bind:
100     iommufd_cdev_kvm_device_del(vbasedev);
101 err_kvm_device_add:
102     iommufd_backend_disconnect(iommufd);
103     return false;
104 }
105 
106 static void iommufd_cdev_unbind_and_disconnect(VFIODevice *vbasedev)
107 {
108     /* Unbind is automatically conducted when device fd is closed */
109     iommufd_cdev_kvm_device_del(vbasedev);
110     iommufd_backend_disconnect(vbasedev->iommufd);
111 }
112 
113 static int iommufd_cdev_getfd(const char *sysfs_path, Error **errp)
114 {
115     ERRP_GUARD();
116     long int ret = -ENOTTY;
117     g_autofree char *path = NULL;
118     g_autofree char *vfio_dev_path = NULL;
119     g_autofree char *vfio_path = NULL;
120     DIR *dir = NULL;
121     struct dirent *dent;
122     g_autofree gchar *contents = NULL;
123     gsize length;
124     int major, minor;
125     dev_t vfio_devt;
126 
127     path = g_strdup_printf("%s/vfio-dev", sysfs_path);
128     dir = opendir(path);
129     if (!dir) {
130         error_setg_errno(errp, errno, "couldn't open directory %s", path);
131         goto out;
132     }
133 
134     while ((dent = readdir(dir))) {
135         if (!strncmp(dent->d_name, "vfio", 4)) {
136             vfio_dev_path = g_strdup_printf("%s/%s/dev", path, dent->d_name);
137             break;
138         }
139     }
140 
141     if (!vfio_dev_path) {
142         error_setg(errp, "failed to find vfio-dev/vfioX/dev");
143         goto out_close_dir;
144     }
145 
146     if (!g_file_get_contents(vfio_dev_path, &contents, &length, NULL)) {
147         error_setg(errp, "failed to load \"%s\"", vfio_dev_path);
148         goto out_close_dir;
149     }
150 
151     if (sscanf(contents, "%d:%d", &major, &minor) != 2) {
152         error_setg(errp, "failed to get major:minor for \"%s\"", vfio_dev_path);
153         goto out_close_dir;
154     }
155     vfio_devt = makedev(major, minor);
156 
157     vfio_path = g_strdup_printf("/dev/vfio/devices/%s", dent->d_name);
158     ret = open_cdev(vfio_path, vfio_devt);
159     if (ret < 0) {
160         error_setg(errp, "Failed to open %s", vfio_path);
161     }
162 
163     trace_iommufd_cdev_getfd(vfio_path, ret);
164 
165 out_close_dir:
166     closedir(dir);
167 out:
168     if (*errp) {
169         error_prepend(errp, VFIO_MSG_PREFIX, path);
170     }
171 
172     return ret;
173 }
174 
175 static bool iommufd_cdev_attach_ioas_hwpt(VFIODevice *vbasedev, uint32_t id,
176                                          Error **errp)
177 {
178     int iommufd = vbasedev->iommufd->fd;
179     struct vfio_device_attach_iommufd_pt attach_data = {
180         .argsz = sizeof(attach_data),
181         .flags = 0,
182         .pt_id = id,
183     };
184 
185     /* Attach device to an IOAS or hwpt within iommufd */
186     if (ioctl(vbasedev->fd, VFIO_DEVICE_ATTACH_IOMMUFD_PT, &attach_data)) {
187         error_setg_errno(errp, errno,
188                          "[iommufd=%d] error attach %s (%d) to id=%d",
189                          iommufd, vbasedev->name, vbasedev->fd, id);
190         return false;
191     }
192 
193     trace_iommufd_cdev_attach_ioas_hwpt(iommufd, vbasedev->name,
194                                         vbasedev->fd, id);
195     return true;
196 }
197 
198 static bool iommufd_cdev_detach_ioas_hwpt(VFIODevice *vbasedev, Error **errp)
199 {
200     int iommufd = vbasedev->iommufd->fd;
201     struct vfio_device_detach_iommufd_pt detach_data = {
202         .argsz = sizeof(detach_data),
203         .flags = 0,
204     };
205 
206     if (ioctl(vbasedev->fd, VFIO_DEVICE_DETACH_IOMMUFD_PT, &detach_data)) {
207         error_setg_errno(errp, errno, "detach %s failed", vbasedev->name);
208         return false;
209     }
210 
211     trace_iommufd_cdev_detach_ioas_hwpt(iommufd, vbasedev->name);
212     return true;
213 }
214 
215 static bool iommufd_cdev_attach_container(VFIODevice *vbasedev,
216                                           VFIOIOMMUFDContainer *container,
217                                           Error **errp)
218 {
219     return iommufd_cdev_attach_ioas_hwpt(vbasedev, container->ioas_id, errp);
220 }
221 
222 static void iommufd_cdev_detach_container(VFIODevice *vbasedev,
223                                           VFIOIOMMUFDContainer *container)
224 {
225     Error *err = NULL;
226 
227     if (!iommufd_cdev_detach_ioas_hwpt(vbasedev, &err)) {
228         error_report_err(err);
229     }
230 }
231 
232 static void iommufd_cdev_container_destroy(VFIOIOMMUFDContainer *container)
233 {
234     VFIOContainerBase *bcontainer = &container->bcontainer;
235 
236     if (!QLIST_EMPTY(&bcontainer->device_list)) {
237         return;
238     }
239     memory_listener_unregister(&bcontainer->listener);
240     iommufd_backend_free_id(container->be, container->ioas_id);
241     object_unref(container);
242 }
243 
244 static int iommufd_cdev_ram_block_discard_disable(bool state)
245 {
246     /*
247      * We support coordinated discarding of RAM via the RamDiscardManager.
248      */
249     return ram_block_uncoordinated_discard_disable(state);
250 }
251 
252 static bool iommufd_cdev_get_info_iova_range(VFIOIOMMUFDContainer *container,
253                                              uint32_t ioas_id, Error **errp)
254 {
255     VFIOContainerBase *bcontainer = &container->bcontainer;
256     g_autofree struct iommu_ioas_iova_ranges *info = NULL;
257     struct iommu_iova_range *iova_ranges;
258     int sz, fd = container->be->fd;
259 
260     info = g_malloc0(sizeof(*info));
261     info->size = sizeof(*info);
262     info->ioas_id = ioas_id;
263 
264     if (ioctl(fd, IOMMU_IOAS_IOVA_RANGES, info) && errno != EMSGSIZE) {
265         goto error;
266     }
267 
268     sz = info->num_iovas * sizeof(struct iommu_iova_range);
269     info = g_realloc(info, sizeof(*info) + sz);
270     info->allowed_iovas = (uintptr_t)(info + 1);
271 
272     if (ioctl(fd, IOMMU_IOAS_IOVA_RANGES, info)) {
273         goto error;
274     }
275 
276     iova_ranges = (struct iommu_iova_range *)(uintptr_t)info->allowed_iovas;
277 
278     for (int i = 0; i < info->num_iovas; i++) {
279         Range *range = g_new(Range, 1);
280 
281         range_set_bounds(range, iova_ranges[i].start, iova_ranges[i].last);
282         bcontainer->iova_ranges =
283             range_list_insert(bcontainer->iova_ranges, range);
284     }
285     bcontainer->pgsizes = info->out_iova_alignment;
286 
287     return true;
288 
289 error:
290     error_setg_errno(errp, errno, "Cannot get IOVA ranges");
291     return false;
292 }
293 
294 static bool iommufd_cdev_attach(const char *name, VFIODevice *vbasedev,
295                                 AddressSpace *as, Error **errp)
296 {
297     VFIOContainerBase *bcontainer;
298     VFIOIOMMUFDContainer *container;
299     VFIOAddressSpace *space;
300     struct vfio_device_info dev_info = { .argsz = sizeof(dev_info) };
301     int ret, devfd;
302     uint32_t ioas_id;
303     Error *err = NULL;
304     const VFIOIOMMUClass *iommufd_vioc =
305         VFIO_IOMMU_CLASS(object_class_by_name(TYPE_VFIO_IOMMU_IOMMUFD));
306 
307     if (vbasedev->fd < 0) {
308         devfd = iommufd_cdev_getfd(vbasedev->sysfsdev, errp);
309         if (devfd < 0) {
310             return false;
311         }
312         vbasedev->fd = devfd;
313     } else {
314         devfd = vbasedev->fd;
315     }
316 
317     if (!iommufd_cdev_connect_and_bind(vbasedev, errp)) {
318         goto err_connect_bind;
319     }
320 
321     space = vfio_get_address_space(as);
322 
323     /* try to attach to an existing container in this space */
324     QLIST_FOREACH(bcontainer, &space->containers, next) {
325         container = container_of(bcontainer, VFIOIOMMUFDContainer, bcontainer);
326         if (VFIO_IOMMU_GET_CLASS(bcontainer) != iommufd_vioc ||
327             vbasedev->iommufd != container->be) {
328             continue;
329         }
330         if (!iommufd_cdev_attach_container(vbasedev, container, &err)) {
331             const char *msg = error_get_pretty(err);
332 
333             trace_iommufd_cdev_fail_attach_existing_container(msg);
334             error_free(err);
335             err = NULL;
336         } else {
337             ret = iommufd_cdev_ram_block_discard_disable(true);
338             if (ret) {
339                 error_setg(errp,
340                               "Cannot set discarding of RAM broken (%d)", ret);
341                 goto err_discard_disable;
342             }
343             goto found_container;
344         }
345     }
346 
347     /* Need to allocate a new dedicated container */
348     if (!iommufd_backend_alloc_ioas(vbasedev->iommufd, &ioas_id, errp)) {
349         goto err_alloc_ioas;
350     }
351 
352     trace_iommufd_cdev_alloc_ioas(vbasedev->iommufd->fd, ioas_id);
353 
354     container = VFIO_IOMMU_IOMMUFD(object_new(TYPE_VFIO_IOMMU_IOMMUFD));
355     container->be = vbasedev->iommufd;
356     container->ioas_id = ioas_id;
357 
358     bcontainer = &container->bcontainer;
359     vfio_address_space_insert(space, bcontainer);
360 
361     if (!iommufd_cdev_attach_container(vbasedev, container, errp)) {
362         goto err_attach_container;
363     }
364 
365     ret = iommufd_cdev_ram_block_discard_disable(true);
366     if (ret) {
367         goto err_discard_disable;
368     }
369 
370     if (!iommufd_cdev_get_info_iova_range(container, ioas_id, &err)) {
371         error_append_hint(&err,
372                    "Fallback to default 64bit IOVA range and 4K page size\n");
373         warn_report_err(err);
374         err = NULL;
375         bcontainer->pgsizes = qemu_real_host_page_size();
376     }
377 
378     bcontainer->listener = vfio_memory_listener;
379     memory_listener_register(&bcontainer->listener, bcontainer->space->as);
380 
381     if (bcontainer->error) {
382         error_propagate_prepend(errp, bcontainer->error,
383                                 "memory listener initialization failed: ");
384         goto err_listener_register;
385     }
386 
387     bcontainer->initialized = true;
388 
389 found_container:
390     ret = ioctl(devfd, VFIO_DEVICE_GET_INFO, &dev_info);
391     if (ret) {
392         error_setg_errno(errp, errno, "error getting device info");
393         goto err_listener_register;
394     }
395 
396     if (!vfio_cpr_register_container(bcontainer, errp)) {
397         goto err_listener_register;
398     }
399 
400     /*
401      * TODO: examine RAM_BLOCK_DISCARD stuff, should we do group level
402      * for discarding incompatibility check as well?
403      */
404     if (vbasedev->ram_block_discard_allowed) {
405         iommufd_cdev_ram_block_discard_disable(false);
406     }
407 
408     vbasedev->group = 0;
409     vbasedev->num_irqs = dev_info.num_irqs;
410     vbasedev->num_regions = dev_info.num_regions;
411     vbasedev->flags = dev_info.flags;
412     vbasedev->reset_works = !!(dev_info.flags & VFIO_DEVICE_FLAGS_RESET);
413     vbasedev->bcontainer = bcontainer;
414     QLIST_INSERT_HEAD(&bcontainer->device_list, vbasedev, container_next);
415     QLIST_INSERT_HEAD(&vfio_device_list, vbasedev, global_next);
416 
417     trace_iommufd_cdev_device_info(vbasedev->name, devfd, vbasedev->num_irqs,
418                                    vbasedev->num_regions, vbasedev->flags);
419     return true;
420 
421 err_listener_register:
422     iommufd_cdev_ram_block_discard_disable(false);
423 err_discard_disable:
424     iommufd_cdev_detach_container(vbasedev, container);
425 err_attach_container:
426     iommufd_cdev_container_destroy(container);
427 err_alloc_ioas:
428     vfio_put_address_space(space);
429     iommufd_cdev_unbind_and_disconnect(vbasedev);
430 err_connect_bind:
431     close(vbasedev->fd);
432     return false;
433 }
434 
435 static void iommufd_cdev_detach(VFIODevice *vbasedev)
436 {
437     VFIOContainerBase *bcontainer = vbasedev->bcontainer;
438     VFIOAddressSpace *space = bcontainer->space;
439     VFIOIOMMUFDContainer *container = container_of(bcontainer,
440                                                    VFIOIOMMUFDContainer,
441                                                    bcontainer);
442     QLIST_REMOVE(vbasedev, global_next);
443     QLIST_REMOVE(vbasedev, container_next);
444     vbasedev->bcontainer = NULL;
445 
446     if (!vbasedev->ram_block_discard_allowed) {
447         iommufd_cdev_ram_block_discard_disable(false);
448     }
449 
450     vfio_cpr_unregister_container(bcontainer);
451     iommufd_cdev_detach_container(vbasedev, container);
452     iommufd_cdev_container_destroy(container);
453     vfio_put_address_space(space);
454 
455     iommufd_cdev_unbind_and_disconnect(vbasedev);
456     close(vbasedev->fd);
457 }
458 
459 static VFIODevice *iommufd_cdev_pci_find_by_devid(__u32 devid)
460 {
461     VFIODevice *vbasedev_iter;
462     const VFIOIOMMUClass *iommufd_vioc =
463         VFIO_IOMMU_CLASS(object_class_by_name(TYPE_VFIO_IOMMU_IOMMUFD));
464 
465     QLIST_FOREACH(vbasedev_iter, &vfio_device_list, global_next) {
466         if (VFIO_IOMMU_GET_CLASS(vbasedev_iter->bcontainer) != iommufd_vioc) {
467             continue;
468         }
469         if (devid == vbasedev_iter->devid) {
470             return vbasedev_iter;
471         }
472     }
473     return NULL;
474 }
475 
476 static VFIOPCIDevice *
477 iommufd_cdev_dep_get_realized_vpdev(struct vfio_pci_dependent_device *dep_dev,
478                                     VFIODevice *reset_dev)
479 {
480     VFIODevice *vbasedev_tmp;
481 
482     if (dep_dev->devid == reset_dev->devid ||
483         dep_dev->devid == VFIO_PCI_DEVID_OWNED) {
484         return NULL;
485     }
486 
487     vbasedev_tmp = iommufd_cdev_pci_find_by_devid(dep_dev->devid);
488     if (!vbasedev_tmp || !vbasedev_tmp->dev->realized ||
489         vbasedev_tmp->type != VFIO_DEVICE_TYPE_PCI) {
490         return NULL;
491     }
492 
493     return container_of(vbasedev_tmp, VFIOPCIDevice, vbasedev);
494 }
495 
496 static int iommufd_cdev_pci_hot_reset(VFIODevice *vbasedev, bool single)
497 {
498     VFIOPCIDevice *vdev = container_of(vbasedev, VFIOPCIDevice, vbasedev);
499     struct vfio_pci_hot_reset_info *info = NULL;
500     struct vfio_pci_dependent_device *devices;
501     struct vfio_pci_hot_reset *reset;
502     int ret, i;
503     bool multi = false;
504 
505     trace_vfio_pci_hot_reset(vdev->vbasedev.name, single ? "one" : "multi");
506 
507     if (!single) {
508         vfio_pci_pre_reset(vdev);
509     }
510     vdev->vbasedev.needs_reset = false;
511 
512     ret = vfio_pci_get_pci_hot_reset_info(vdev, &info);
513 
514     if (ret) {
515         goto out_single;
516     }
517 
518     assert(info->flags & VFIO_PCI_HOT_RESET_FLAG_DEV_ID);
519 
520     devices = &info->devices[0];
521 
522     if (!(info->flags & VFIO_PCI_HOT_RESET_FLAG_DEV_ID_OWNED)) {
523         if (!vdev->has_pm_reset) {
524             for (i = 0; i < info->count; i++) {
525                 if (devices[i].devid == VFIO_PCI_DEVID_NOT_OWNED) {
526                     error_report("vfio: Cannot reset device %s, "
527                                  "depends on device %04x:%02x:%02x.%x "
528                                  "which is not owned.",
529                                  vdev->vbasedev.name, devices[i].segment,
530                                  devices[i].bus, PCI_SLOT(devices[i].devfn),
531                                  PCI_FUNC(devices[i].devfn));
532                 }
533             }
534         }
535         ret = -EPERM;
536         goto out_single;
537     }
538 
539     trace_vfio_pci_hot_reset_has_dep_devices(vdev->vbasedev.name);
540 
541     for (i = 0; i < info->count; i++) {
542         VFIOPCIDevice *tmp;
543 
544         trace_iommufd_cdev_pci_hot_reset_dep_devices(devices[i].segment,
545                                                      devices[i].bus,
546                                                      PCI_SLOT(devices[i].devfn),
547                                                      PCI_FUNC(devices[i].devfn),
548                                                      devices[i].devid);
549 
550         /*
551          * If a VFIO cdev device is resettable, all the dependent devices
552          * are either bound to same iommufd or within same iommu_groups as
553          * one of the iommufd bound devices.
554          */
555         assert(devices[i].devid != VFIO_PCI_DEVID_NOT_OWNED);
556 
557         tmp = iommufd_cdev_dep_get_realized_vpdev(&devices[i], &vdev->vbasedev);
558         if (!tmp) {
559             continue;
560         }
561 
562         if (single) {
563             ret = -EINVAL;
564             goto out_single;
565         }
566         vfio_pci_pre_reset(tmp);
567         tmp->vbasedev.needs_reset = false;
568         multi = true;
569     }
570 
571     if (!single && !multi) {
572         ret = -EINVAL;
573         goto out_single;
574     }
575 
576     /* Use zero length array for hot reset with iommufd backend */
577     reset = g_malloc0(sizeof(*reset));
578     reset->argsz = sizeof(*reset);
579 
580      /* Bus reset! */
581     ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_PCI_HOT_RESET, reset);
582     g_free(reset);
583     if (ret) {
584         ret = -errno;
585     }
586 
587     trace_vfio_pci_hot_reset_result(vdev->vbasedev.name,
588                                     ret ? strerror(errno) : "Success");
589 
590     /* Re-enable INTx on affected devices */
591     for (i = 0; i < info->count; i++) {
592         VFIOPCIDevice *tmp;
593 
594         tmp = iommufd_cdev_dep_get_realized_vpdev(&devices[i], &vdev->vbasedev);
595         if (!tmp) {
596             continue;
597         }
598         vfio_pci_post_reset(tmp);
599     }
600 out_single:
601     if (!single) {
602         vfio_pci_post_reset(vdev);
603     }
604     g_free(info);
605 
606     return ret;
607 }
608 
609 static void vfio_iommu_iommufd_class_init(ObjectClass *klass, void *data)
610 {
611     VFIOIOMMUClass *vioc = VFIO_IOMMU_CLASS(klass);
612 
613     vioc->hiod_typename = TYPE_HOST_IOMMU_DEVICE_IOMMUFD_VFIO;
614 
615     vioc->dma_map = iommufd_cdev_map;
616     vioc->dma_unmap = iommufd_cdev_unmap;
617     vioc->attach_device = iommufd_cdev_attach;
618     vioc->detach_device = iommufd_cdev_detach;
619     vioc->pci_hot_reset = iommufd_cdev_pci_hot_reset;
620 };
621 
622 static bool hiod_iommufd_vfio_realize(HostIOMMUDevice *hiod, void *opaque,
623                                       Error **errp)
624 {
625     VFIODevice *vdev = opaque;
626     HostIOMMUDeviceCaps *caps = &hiod->caps;
627     enum iommu_hw_info_type type;
628     union {
629         struct iommu_hw_info_vtd vtd;
630     } data;
631 
632     hiod->agent = opaque;
633 
634     if (!iommufd_backend_get_device_info(vdev->iommufd, vdev->devid,
635                                          &type, &data, sizeof(data), errp)) {
636         return false;
637     }
638 
639     hiod->name = g_strdup(vdev->name);
640     caps->type = type;
641     caps->aw_bits = vfio_device_get_aw_bits(vdev);
642 
643     return true;
644 }
645 
646 static GList *
647 hiod_iommufd_vfio_get_iova_ranges(HostIOMMUDevice *hiod, Error **errp)
648 {
649     VFIODevice *vdev = hiod->agent;
650     GList *l = NULL;
651 
652     g_assert(vdev);
653 
654     if (vdev->bcontainer) {
655         l = g_list_copy(vdev->bcontainer->iova_ranges);
656     }
657 
658     return l;
659 }
660 
661 static void hiod_iommufd_vfio_class_init(ObjectClass *oc, void *data)
662 {
663     HostIOMMUDeviceClass *hiodc = HOST_IOMMU_DEVICE_CLASS(oc);
664 
665     hiodc->realize = hiod_iommufd_vfio_realize;
666     hiodc->get_iova_ranges = hiod_iommufd_vfio_get_iova_ranges;
667 };
668 
669 static const TypeInfo types[] = {
670     {
671         .name = TYPE_VFIO_IOMMU_IOMMUFD,
672         .parent = TYPE_VFIO_IOMMU,
673         .instance_size = sizeof(VFIOIOMMUFDContainer),
674         .class_init = vfio_iommu_iommufd_class_init,
675     }, {
676         .name = TYPE_HOST_IOMMU_DEVICE_IOMMUFD_VFIO,
677         .parent = TYPE_HOST_IOMMU_DEVICE_IOMMUFD,
678         .class_init = hiod_iommufd_vfio_class_init,
679     }
680 };
681 
682 DEFINE_TYPES(types)
683