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backends/iommufd: Implement HostIOMMUDeviceClass::get_cap() handler

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Suggested-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Zhenzhong Duan 2024-06-05 16:30:36 +08:00 committed by Cédric Le Goater
parent ed92ed2d48
commit 63c6e83ec2
1 changed files with 23 additions and 0 deletions
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23
backends/iommufd.c
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@ -230,6 +230,28 @@ bool iommufd_backend_get_device_info(IOMMUFDBackend *be, uint32_t devid,
return true;
}
static int hiod_iommufd_get_cap(HostIOMMUDevice *hiod, int cap, Error **errp)
{
HostIOMMUDeviceCaps *caps = &hiod->caps;
switch (cap) {
case HOST_IOMMU_DEVICE_CAP_IOMMU_TYPE:
return caps->type;
case HOST_IOMMU_DEVICE_CAP_AW_BITS:
return caps->aw_bits;
default:
error_setg(errp, "%s: unsupported capability %x", hiod->name, cap);
return -EINVAL;
}
}
static void hiod_iommufd_class_init(ObjectClass *oc, void *data)
{
HostIOMMUDeviceClass *hioc = HOST_IOMMU_DEVICE_CLASS(oc);
hioc->get_cap = hiod_iommufd_get_cap;
};
static const TypeInfo types[] = {
{
.name = TYPE_IOMMUFD_BACKEND,
@ -246,6 +268,7 @@ static const TypeInfo types[] = {
}, {
.name = TYPE_HOST_IOMMU_DEVICE_IOMMUFD,
.parent = TYPE_HOST_IOMMU_DEVICE,
.class_init = hiod_iommufd_class_init,
.abstract = true,
}
};