Yaya48
cf256aa081
Upstream: https://gitlab.com/qemu-project/qemu.git Upstream-Commit: d2e570cc0f97b936902a5b1b86b73c0f5998b475
48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/*
|
|
* VFIO sPAPR KVM specific functions
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include <sys/ioctl.h>
|
|
#include <linux/vfio.h>
|
|
#include <linux/kvm.h>
|
|
|
|
#include "hw/vfio/vfio-container-legacy.h"
|
|
#include "hw/vfio/kvm-spapr.h"
|
|
#include "qapi/error.h"
|
|
#include "trace.h"
|
|
#include "vfio-helpers.h"
|
|
|
|
bool vfio_spapr_kvm_attach_tce(VFIOContainer *bcontainer,
|
|
MemoryRegionSection *section,
|
|
Error **errp)
|
|
{
|
|
VFIOLegacyContainer *container = VFIO_IOMMU_LEGACY(bcontainer);
|
|
VFIOGroup *group;
|
|
IOMMUMemoryRegion *iommu_mr = IOMMU_MEMORY_REGION(section->mr);
|
|
struct kvm_vfio_spapr_tce param;
|
|
struct kvm_device_attr attr = {
|
|
.group = KVM_DEV_VFIO_GROUP,
|
|
.attr = KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE,
|
|
.addr = (uint64_t)(unsigned long)¶m,
|
|
};
|
|
|
|
if (!memory_region_iommu_get_attr(iommu_mr, IOMMU_ATTR_SPAPR_TCE_FD,
|
|
¶m.tablefd)) {
|
|
QLIST_FOREACH(group, &container->group_list, container_next) {
|
|
param.groupfd = group->fd;
|
|
if (ioctl(vfio_kvm_device_fd, KVM_SET_DEVICE_ATTR, &attr)) {
|
|
error_setg_errno(errp, errno,
|
|
"vfio: failed GROUP_SET_SPAPR_TCE for "
|
|
"KVM VFIO device %d and group fd %d",
|
|
param.tablefd, param.groupfd);
|
|
return false;
|
|
}
|
|
trace_vfio_spapr_group_attach(param.groupfd, param.tablefd);
|
|
}
|
|
}
|
|
return true;
|
|
}
|