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a9994687cb
Infrastructure for display support. Must be enabled using 'display' property. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed By: Kirti Wankhede <kwankhede@nvidia.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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* display support for mdev based vgpu devices
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*
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* Copyright Red Hat, Inc. 2017
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*
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* Authors:
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* Gerd Hoffmann
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include <linux/vfio.h>
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#include <sys/ioctl.h>
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#include "sysemu/sysemu.h"
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#include "ui/console.h"
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#include "qapi/error.h"
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#include "pci.h"
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int vfio_display_probe(VFIOPCIDevice *vdev, Error **errp)
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{
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struct vfio_device_gfx_plane_info probe;
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int ret;
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memset(&probe, 0, sizeof(probe));
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probe.argsz = sizeof(probe);
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probe.flags = VFIO_GFX_PLANE_TYPE_PROBE | VFIO_GFX_PLANE_TYPE_DMABUF;
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ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_QUERY_GFX_PLANE, &probe);
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if (ret == 0) {
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error_setg(errp, "vfio-display: dmabuf support not implemented yet");
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return -1;
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}
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memset(&probe, 0, sizeof(probe));
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probe.argsz = sizeof(probe);
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probe.flags = VFIO_GFX_PLANE_TYPE_PROBE | VFIO_GFX_PLANE_TYPE_REGION;
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ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_QUERY_GFX_PLANE, &probe);
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if (ret == 0) {
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error_setg(errp, "vfio-display: region support not implemented yet");
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return -1;
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}
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if (vdev->display == ON_OFF_AUTO_AUTO) {
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/* not an error in automatic mode */
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return 0;
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}
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error_setg(errp, "vfio: device doesn't support any (known) display method");
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return -1;
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}
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void vfio_display_finalize(VFIOPCIDevice *vdev)
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{
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}
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