| 1 | /* |
| 2 | * VFIO sPAPR KVM specific functions |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 5 | */ |
| 6 | |
| 7 | #include "qemu/osdep.h" |
| 8 | #include <sys/ioctl.h> |
| 9 | #include <linux/vfio.h> |
| 10 | #include <linux/kvm.h> |
| 11 | |
| 12 | #include "hw/vfio/vfio-container-legacy.h" |
| 13 | #include "hw/vfio/kvm-spapr.h" |
| 14 | #include "qapi/error.h" |
| 15 | #include "trace.h" |
| 16 | #include "vfio-helpers.h" |
| 17 | |
| 18 | bool vfio_spapr_kvm_attach_tce(VFIOContainer *bcontainer, |
| 19 | MemoryRegionSection *section, |
| 20 | Error **errp) |
| 21 | { |
| 22 | VFIOLegacyContainer *container = VFIO_IOMMU_LEGACY(bcontainer); |
| 23 | VFIOGroup *group; |
| 24 | IOMMUMemoryRegion *iommu_mr = IOMMU_MEMORY_REGION(section->mr); |
| 25 | struct kvm_vfio_spapr_tce param; |
| 26 | struct kvm_device_attr attr = { |
| 27 | .group = KVM_DEV_VFIO_GROUP, |
| 28 | .attr = KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE, |
| 29 | .addr = (uint64_t)(unsigned long)¶m, |
| 30 | }; |
| 31 | |
| 32 | if (!memory_region_iommu_get_attr(iommu_mr, IOMMU_ATTR_SPAPR_TCE_FD, |
| 33 | ¶m.tablefd)) { |
| 34 | QLIST_FOREACH(group, &container->group_list, container_next) { |
| 35 | param.groupfd = group->fd; |
| 36 | if (ioctl(vfio_kvm_device_fd, KVM_SET_DEVICE_ATTR, &attr)) { |
| 37 | error_setg_errno(errp, errno, |
| 38 | "vfio: failed GROUP_SET_SPAPR_TCE for " |
| 39 | "KVM VFIO device %d and group fd %d", |
| 40 | param.tablefd, param.groupfd); |
| 41 | return false; |
| 42 | } |
| 43 | trace_vfio_spapr_group_attach(param.groupfd, param.tablefd); |
| 44 | } |
| 45 | } |
| 46 | return true; |
| 47 | } |