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secure-display-v1: new protocol

See merge request wayland/wayland-protocols!198
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SophiaG 2025-12-16 21:31:44 +00:00
commit 935d0081a2
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meson.build
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@ -75,6 +75,7 @@ staging_protocols = {
'xdg-toplevel-icon': ['v1'],
'xdg-toplevel-tag': ['v1'],
'xwayland-shell': ['v1'],
'secure-display':['v1'],
}
experimental_protocols = {

4
staging/secure-display/README Normal file
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@ -0,0 +1,4 @@
Linux secure display protocol
Maintainers:
Sophia Gong <lili.gong@amd.com>

112
staging/secure-display/secure-display-v1.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<protocol name="secure_display_v1">
<copyright>
Copyright © 2023 Advanced Micro Devices, Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice (including the next
paragraph) shall be included in all copies or substantial portions of the
Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
</copyright>
<description summary="secure display">
This protocol allows compositors to calculate pixel R/G/B channel CRC-16
of specified screen region of interest for security check.
Warning! The protocol described in this file is currently in the testing
phase. Backward compatible changes may be added together with the
corresponding interface version bump. Backward incompatible changes can
only be done by creating a new major version of the extension.
</description>
<interface name="wp_secure_display_manager_v1" version="1">
<description summary="manage secure_display objects">
A global factory interface for secure_display objects.
</description>
<request name="destroy" type="destructor">
<description summary="destroy the secure_display_manager object">
Using this request a client can tell the server that it is not going to use
the secure_display_manager object anymore.
</description>
</request>
<request name="create_secure_output">
<description summary="create a secure display crtc for a given wl_output">
Create a secure display crtc interface to handle roi request and crc comparison.
</description>
<arg name="id" type="new_id" interface="wp_secure_display_crtc_v1"/>
<arg name="output" type="object" interface="wl_output"/>
</request>
</interface>
<interface name="wp_secure_display_crtc_v1" version="1">
<description summary="secure display output crtc">
An interface to implement secure display on an assigned crtc. it will send roi request
to display driver and read back crc calculated by display controller.
</description>
<request name="destroy" type="destructor">
<description summary="destroy the secure display output">
</description>
</request>
<request name="set_roi">
<description summary="set display screen region of interest">
Clients send request to set screen roi.
</description>
<arg name="x_start" type="int" summary="start x of roi"/>
<arg name="y_start" type="int" summary="start y of roi"/>
<arg name="x_end" type="int" summary="end x of roi"/>
<arg name="y_end" type="int" summary="end y of roi"/>
<arg name="secure_display_enable" type="int" summary="enable secure display check"/>
</request>
<request name="get_crc">
<description summary="to read r/g/b crc-16 from drm-backend">
Clients send request to read back crc-16 for specified roi.
</description>
</request>
<event name="rgb_crc">
<description summary="read back from compositors' drm-backend">
</description>
<arg name="r_crc" type="uint" summary="read back r crc-16 value"/>
<arg name="g_crc" type="uint" summary="read back g crc-16 value"/>
<arg name="b_crc" type="uint" summary="read back b crc-16 value"/>
<arg name="frame_count" type="uint" summary="record frame number to generate crc"/>
<arg name="x_start" type="int" summary="read back crc relevant roi"/>
<arg name="y_start" type="int" summary="read back crc relevant roi"/>
<arg name="x_end" type="int" summary="read back crc relevant roi"/>
<arg name="y_end" type="int" summary="read back crc relevant roi"/>
</event>
<event name="crtc_out_fence">
<description summary="send crtc out fence to client">
out-fence is to synchronize between weston compositor and drm display driver about
crc-16 read back.
</description>
<arg name="out_fence" type="int" summary="out fence for synchronization"/>
</event>
<event name="done">
<description summary="crc-16 is read back for security check">
</description>
</event>
</interface>
</protocol>