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drm/i915/gvt: add VFIO EDID region

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Implement VFIO EDID region for vgpu. Support EDID blob update and notify
guest on link state change via hotplug event.

v3: move struct edid_region to kvmgt.c <zhenyu>
v2: add EDID sanity check and size update <zhenyu>

Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Hang Yuan <hang.yuan@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Hang Yuan
2019-01-30 18:25:54 +08:00
committed by Zhenyu Wang
parent 1ca20f33df
commit 39c68e87bc
4 changed files with 167 additions and 0 deletions
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17
drivers/gpu/drm/i915/gvt/mpt.h
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@@ -313,6 +313,23 @@ static inline int intel_gvt_hypervisor_set_opregion(struct intel_vgpu *vgpu)
return intel_gvt_host.mpt->set_opregion(vgpu);
}
/**
* intel_gvt_hypervisor_set_edid - Set EDID region for guest
* @vgpu: a vGPU
* @port_num: display port number
*
* Returns:
* Zero on success, negative error code if failed.
*/
static inline int intel_gvt_hypervisor_set_edid(struct intel_vgpu *vgpu,
int port_num)
{
if (!intel_gvt_host.mpt->set_edid)
return 0;
return intel_gvt_host.mpt->set_edid(vgpu, port_num);
}
/**
* intel_gvt_hypervisor_get_vfio_device - increase vfio device ref count
* @vgpu: a vGPU