hw/vfio/container.c

35 #include "hw/vfio/vfio-container.h"
46 static int vfio_ram_block_discard_disable(VFIOContainer *container, bool state)
48     switch (container->iommu_type) {
69 static int vfio_dma_unmap_bitmap(const VFIOContainer *container,
73     const VFIOContainerBase *bcontainer = &container->bcontainer;
107     ret = ioctl(container->fd, VFIO_IOMMU_UNMAP_DMA, unmap);
126     const VFIOContainer *container = container_of(bcontainer, VFIOContainer,
141             return vfio_dma_unmap_bitmap(container, iova, size, iotlb);
147     while (ioctl(container->fd, VFIO_IOMMU_UNMAP_DMA, &unmap)) {
161             container->iommu_type == VFIO_TYPE1v2_IOMMU) {
212     const VFIOContainer *container = container_of(bcontainer, VFIOContainer,
231     if (ioctl(container->fd, VFIO_IOMMU_MAP_DMA, &map) == 0 ||
234          ioctl(container->fd, VFIO_IOMMU_MAP_DMA, &map) == 0)) {
245     const VFIOContainer *container = container_of(bcontainer, VFIOContainer,
258     ret = ioctl(container->fd, VFIO_IOMMU_DIRTY_PAGES, &dirty);
271     const VFIOContainer *container = container_of(bcontainer, VFIOContainer,
294     ret = ioctl(container->fd, VFIO_IOMMU_DIRTY_PAGES, dbitmap);
394         error_setg_errno(errp, errno, "Failed to set group container");
403              * way to guess it until an IOMMU group gets added to the container.
409         error_setg_errno(errp, errno, "Failed to set iommu for container");
421     VFIOContainer *container;
434     container = VFIO_IOMMU_LEGACY(object_new(vioc_name));
435     container->fd = fd;
436     container->iommu_type = iommu_type;
437     return container;
440 static int vfio_get_iommu_info(VFIOContainer *container,
450     if (ioctl(container->fd, VFIO_IOMMU_GET_INFO, *info)) {
484 static void vfio_get_iommu_info_migration(VFIOContainer *container,
489     VFIOContainerBase *bcontainer = &container->bcontainer;
512     VFIOContainer *container = container_of(bcontainer, VFIOContainer,
517     ret = vfio_get_iommu_info(container, &info);
535     vfio_get_iommu_info_migration(container, info);
539 static bool vfio_container_attach_discard_disable(VFIOContainer *container,
549      * therefore set discarding broken for each group added to a container,
550      * whether the container is used individually or shared.  This provides
562      * container is registered, a replay of mappings within the AddressSpace
575     ret = vfio_ram_block_discard_disable(container, true);
578         if (ioctl(group->fd, VFIO_GROUP_UNSET_CONTAINER, &container->fd)) {
580                          " container", group->groupid);
586 static bool vfio_container_group_add(VFIOContainer *container, VFIOGroup *group,
589     if (!vfio_container_attach_discard_disable(container, group, errp)) {
592     group->container = container;
593     QLIST_INSERT_HEAD(&container->group_list, group, container_next);
598 static void vfio_container_group_del(VFIOContainer *container, VFIOGroup *group)
601     group->container = NULL;
603     vfio_ram_block_discard_disable(container, false);
609     VFIOContainer *container;
620         container = container_of(bcontainer, VFIOContainer, bcontainer);
621         if (!ioctl(group->fd, VFIO_GROUP_SET_CONTAINER, &container->fd)) {
622             return vfio_container_group_add(container, group, errp);
638     container = vfio_create_container(fd, group, errp);
639     if (!container) {
643     bcontainer = &container->bcontainer;
658     if (!vfio_container_group_add(container, group, errp)) {
675         vfio_container_group_del(container, group);
682         object_unref(container);
694     VFIOContainer *container = group->container;
695     VFIOContainerBase *bcontainer = &container->bcontainer;
699     group->container = NULL;
702      * Explicitly release the listener first before unset container,
703      * since unset may destroy the backend container if it's the last
706     if (QLIST_EMPTY(&container->group_list)) {
713     if (ioctl(group->fd, VFIO_GROUP_UNSET_CONTAINER, &container->fd)) {
714         error_report("vfio: error disconnecting group %d from container",
718     if (QLIST_EMPTY(&container->group_list)) {
721         trace_vfio_container_disconnect(container->fd);
723         close(container->fd);
724         object_unref(container);
740             if (group->container->bcontainer.space->as == as) {
775         error_prepend(errp, "failed to setup container for group %d: ",
800         vfio_ram_block_discard_disable(group->container, false);
850             vfio_ram_block_discard_disable(group->container, false);
854     vfio_device_prepare(vbasedev, &group->container->bcontainer, info);
1189     VFIOContainer *container = VFIO_IOMMU_LEGACY(obj);
1191     QLIST_INIT(&container->group_list);