diff options
Diffstat (limited to 'Documentation/gpu')
22 files changed, 2264 insertions, 37 deletions
diff --git a/Documentation/gpu/amdgpu/display/dc-arch-overview.svg b/Documentation/gpu/amdgpu/display/dc-arch-overview.svg new file mode 100644 index 000000000000..23394931cf26 --- /dev/null +++ b/Documentation/gpu/amdgpu/display/dc-arch-overview.svg @@ -0,0 +1,731 @@ +<?xml version="1.0" encoding="UTF-8" standalone="no"?> +<!-- Created with Inkscape (http://www.inkscape.org/) --> + +<svg + width="1204.058" + height="510.57321" + viewBox="0 0 318.57366 135.08917" + version="1.1" + id="svg8" + inkscape:version="1.2.2 (b0a8486541, 2022-12-01)" + sodipodi:docname="dc-arch-overview.svg" + xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" + xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" + xmlns="http://www.w3.org/2000/svg" + xmlns:svg="http://www.w3.org/2000/svg" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" + xmlns:cc="http://creativecommons.org/ns#" + xmlns:dc="http://purl.org/dc/elements/1.1/"> + <defs + id="defs2"> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="marker8858" + style="overflow:visible" + inkscape:isstock="true"> + <path + id="path8616" + style="fill:#aa00d4;fill-opacity:1;fill-rule:evenodd;stroke:#aa00d4;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" + inkscape:connector-curvature="0" /> + </marker> + <marker + inkscape:stockid="Arrow2Send" + orient="auto" + refY="0" + refX="0" + id="Arrow2Send" + style="overflow:visible" + inkscape:isstock="true"> + <path + id="path8622" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="matrix(-0.3,0,0,-0.3,0.69,0)" + inkscape:connector-curvature="0" /> + </marker> + <marker + inkscape:stockid="Arrow1Lend" + orient="auto" + refY="0" + refX="0" + id="Arrow1Lend" + style="overflow:visible" + inkscape:isstock="true"> + <path + id="path8592" + d="M 0,0 5,-5 -12.5,0 5,5 Z" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:1pt;stroke-opacity:1" + transform="matrix(-0.8,0,0,-0.8,-10,0)" + inkscape:connector-curvature="0" /> + </marker> + <marker + inkscape:stockid="Arrow2Lend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Lend" + style="overflow:visible" + inkscape:isstock="true"> + <path + id="path8610" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="matrix(-1.1,0,0,-1.1,-1.1,0)" + inkscape:connector-curvature="0" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend" + style="overflow:visible" + inkscape:isstock="true"> + <path + id="path1200" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" + inkscape:connector-curvature="0" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3-2" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6-9" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3-2-1" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6-9-9" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3-2-7" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6-9-8" + style="fill:#008000;fill-opacity:1;fill-rule:evenodd;stroke:#008000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3-4" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6-5" + style="fill:#008000;fill-opacity:1;fill-rule:evenodd;stroke:#008000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-0" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-3" + style="fill:#008000;fill-opacity:1;fill-rule:evenodd;stroke:#008000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-6" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-1" + style="fill:#008000;fill-opacity:1;fill-rule:evenodd;stroke:#008000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3-2-6" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6-9-1" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-0-7" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-3-4" + style="fill:#008000;fill-opacity:1;fill-rule:evenodd;stroke:#008000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-6-3" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-1-0" + style="fill:#008000;fill-opacity:1;fill-rule:evenodd;stroke:#008000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3-2-8" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6-9-6" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-3" + style="overflow:visible" + inkscape:isstock="true"> + <path + id="path1200-6" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" + inkscape:connector-curvature="0" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="marker8858-3" + style="overflow:visible" + inkscape:isstock="true"> + <path + id="path8616-5" + style="fill:#00ffcc;fill-opacity:1;fill-rule:evenodd;stroke:#00ffcc;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" + inkscape:connector-curvature="0" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3-3" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6-56" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-0-2" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-3-9" + style="fill:#008000;fill-opacity:1;fill-rule:evenodd;stroke:#008000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + </defs> + <sodipodi:namedview + id="base" + pagecolor="#ffffff" + bordercolor="#666666" + borderopacity="1.0" + inkscape:pageopacity="0.0" + inkscape:pageshadow="2" + inkscape:zoom="1.4" + inkscape:cx="812.5" + inkscape:cy="315" + inkscape:document-units="mm" + inkscape:current-layer="layer1" + showgrid="false" + inkscape:window-width="3840" + inkscape:window-height="2083" + inkscape:window-x="0" + inkscape:window-y="0" + inkscape:window-maximized="1" + showguides="false" + fit-margin-top="0" + fit-margin-left="0" + fit-margin-right="0" + fit-margin-bottom="0" + units="px" + inkscape:snap-global="false" + inkscape:showpageshadow="2" + inkscape:pagecheckerboard="0" + inkscape:deskcolor="#d1d1d1" /> + <metadata + id="metadata5"> + <rdf:RDF> + <cc:Work + rdf:about=""> + <dc:format>image/svg+xml</dc:format> + <dc:type + rdf:resource="http://purl.org/dc/dcmitype/StillImage" /> + </cc:Work> + </rdf:RDF> + </metadata> + <g + inkscape:label="Layer 1" + inkscape:groupmode="layer" + id="layer1" + transform="translate(399.57097,11.171866)"> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:6.54816px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163704" + x="-297.75696" + y="109.44505" + id="text1063" /> + <path + style="fill:#008000;stroke:#008000;stroke-width:0.463298;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:0.463298, 0.926596;stroke-dashoffset:0;stroke-opacity:1" + d="m -120.41395,84.001461 h -9.04766" + id="path1171-0-7" + inkscape:connector-curvature="0" /> + <path + style="fill:none;stroke:#ff0000;stroke-width:0.982225;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:0.982225, 1.96445;stroke-dashoffset:0;stroke-opacity:1" + d="m -129.96274,90.649221 h 8.66407" + id="path1171-7-1-3-8" + inkscape:connector-curvature="0" /> + <path + style="fill:none;stroke:#3771c8;stroke-width:0.745037;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" + d="m -121.33167,97.283841 h -7.91265" + id="path7149-3-7-8" + inkscape:connector-curvature="0" /> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:6.54816px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163704" + x="-115.55721" + y="85.330681" + id="text12079"><tspan + sodipodi:role="line" + id="tspan12077" + x="-115.55721" + y="85.330681" + style="font-size:4.80199px;stroke-width:0.163704">Board/Platform</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:6.54816px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163704" + x="-115.75885" + y="92.435066" + id="text12079-3"><tspan + sodipodi:role="line" + id="tspan12077-1" + x="-115.75885" + y="92.435066" + style="font-size:4.80199px;stroke-width:0.163704">SoC</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:6.54816px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163704" + x="-115.6041" + y="98.608604" + id="text12079-3-4"><tspan + sodipodi:role="line" + id="tspan12077-1-9" + x="-115.6041" + y="98.608604" + style="font-size:4.80199px;stroke-width:0.163704">Component</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:3.175px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583" + x="-368.54205" + y="92.633011" + id="text1010-5"><tspan + sodipodi:role="line" + x="-368.54205" + y="92.633011" + style="font-size:6.35px;text-align:center;text-anchor:middle;stroke-width:0.264583" + id="tspan1057">DRAM</tspan></text> + <g + id="g730" + transform="translate(6.9386906,-2.5203356)"> + <text + id="text838-5-2-6-2" + y="32.372173" + x="-372.97867" + style="font-style:normal;font-weight:normal;font-size:6.54814px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163704" + xml:space="preserve"><tspan + id="tspan936-1-2-3" + style="text-align:center;text-anchor:middle;stroke-width:0.163704" + y="32.372173" + x="-372.97867" + sodipodi:role="line">dc_plane</tspan></text> + <rect + ry="6.9139691e-07" + y="18.717371" + x="-390.50565" + height="23.904575" + width="35.080177" + id="rect834-5-2-6-75" + style="fill:none;stroke:#000000;stroke-width:0.561714;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + </g> + <g + id="g738" + transform="translate(6.9386906,31.346346)"> + <text + id="text734" + y="32.372173" + x="-372.97867" + style="font-style:normal;font-weight:normal;font-size:6.54814px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163704" + xml:space="preserve"><tspan + id="tspan732" + style="text-align:center;text-anchor:middle;stroke-width:0.163704" + y="32.372173" + x="-372.97867" + sodipodi:role="line">dc_plane</tspan></text> + <rect + ry="6.9139691e-07" + y="18.717371" + x="-390.50565" + height="23.904575" + width="35.080177" + id="rect736" + style="fill:none;stroke:#000000;stroke-width:0.561714;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + </g> + <rect + ry="2.1256196e-06" + y="8.5983658" + x="-389.18051" + height="73.491852" + width="46.307304" + id="rect744" + style="fill:none;stroke:#3771c8;stroke-width:1.13159;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <g + id="g757" + transform="translate(-19.949528,-8.6078171)"> + <text + id="text600" + y="56.289795" + x="-256.91336" + style="font-style:normal;font-weight:normal;font-size:6.54814px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163704" + xml:space="preserve"><tspan + id="tspan598" + style="text-align:center;text-anchor:middle;stroke-width:0.163704" + y="56.289795" + x="-256.91336" + sodipodi:role="line">DC</tspan></text> + <rect + ry="1.7458606e-06" + y="23.771139" + x="-289.21854" + height="60.361938" + width="65.042557" + id="rect602" + style="fill:none;stroke:#000000;stroke-width:1.21541;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + </g> + <rect + ry="2.3633565e-06" + y="4.4885707" + x="-316.43292" + height="81.711441" + width="79.57225" + id="rect787" + style="fill:none;stroke:#3771c8;stroke-width:1.5641;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <g + id="g765" + transform="translate(6.5577393,-7.020317)"> + <text + id="text608" + y="31.942825" + x="-189.71797" + style="font-style:normal;font-weight:normal;font-size:6.54814px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163704" + xml:space="preserve"><tspan + id="tspan606" + style="text-align:center;text-anchor:middle;stroke-width:0.163704" + y="31.942825" + x="-189.71797" + sodipodi:role="line">dc_link</tspan></text> + <rect + ry="6.8036792e-07" + y="18.197111" + x="-211.99069" + height="23.523254" + width="44.846642" + id="rect610" + style="fill:none;stroke:#000000;stroke-width:0.630025;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + </g> + <rect + ry="1.0582555e-06" + y="4.3160448" + x="-210.69141" + height="36.588463" + width="55.543594" + id="rect794" + style="fill:none;stroke:#3771c8;stroke-width:0.874443;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <g + id="g781" + transform="translate(6.5577393,37.542802)"> + <text + id="text777" + y="31.942825" + x="-189.71797" + style="font-style:normal;font-weight:normal;font-size:6.54814px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163704" + xml:space="preserve"><tspan + id="tspan775" + style="text-align:center;text-anchor:middle;stroke-width:0.163704" + y="31.942825" + x="-189.71797" + sodipodi:role="line">dc_link</tspan></text> + <rect + ry="6.8036792e-07" + y="18.197111" + x="-211.99069" + height="23.523254" + width="44.846642" + id="rect779" + style="fill:none;stroke:#000000;stroke-width:0.630025;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + </g> + <rect + ry="1.0582555e-06" + y="50.466679" + x="-210.69141" + height="36.588463" + width="55.543594" + id="rect796" + style="fill:none;stroke:#3771c8;stroke-width:0.874443;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <g + id="g2151" + transform="translate(2.1659807,-25.895798)"> + <rect + ry="9.2671934e-07" + y="29.395185" + x="-132.25786" + height="32.040688" + width="44.742229" + id="rect618" + style="fill:none;stroke:#3771c8;stroke-width:0.734435;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <g + id="g838" + transform="translate(1.9073486e-6,0.26687336)"> + <text + id="text616" + y="47.132744" + x="-110.03735" + style="font-style:normal;font-weight:normal;font-size:6.54814px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163704" + xml:space="preserve"><tspan + id="tspan614" + style="text-align:center;text-anchor:middle;stroke-width:0.163704" + y="47.132744" + x="-110.03735" + sodipodi:role="line">dc_link</tspan></text> + <rect + ry="5.7260945e-07" + y="35.249866" + x="-126.21788" + height="19.797579" + width="32.66227" + id="rect833" + style="fill:none;stroke:#000000;stroke-width:0.493257;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + </g> + </g> + <rect + ry="3.6076738e-06" + y="-9.4559708" + x="-397.85507" + height="124.73286" + width="250.94243" + id="rect1307" + style="fill:none;stroke:#008000;stroke-width:3.43179;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:6.86358, 3.43179;stroke-dashoffset:0" /> + <rect + ry="2.9172609e-06" + y="-4.5401988" + x="-393.52301" + height="100.8623" + width="174.14117" + id="rect1990" + style="fill:none;stroke:#ff0000;stroke-width:2.57074;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:2.57074, 5.14148;stroke-dashoffset:0" /> + <path + style="fill:none;stroke:#aa00d4;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1" + d="m -317.69814,47.452094 h -23.80954" + id="path2142" /> + <path + style="fill:none;stroke:#aa00d4;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-dasharray:none;stroke-opacity:1" + d="m -130.71642,19.101665 h -23.80954" + id="path2144" /> + <g + aria-label="}" + transform="rotate(180,-59.876965,-0.22738225)" + style="font-style:normal;font-weight:normal;font-size:3.175px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#aa00d4;fill-opacity:1;stroke:none;stroke-width:0.264583" + id="text1003-5"> + <path + d="m 92.00239,-21.748413 h 0.86816 c 0,0 15.81267,-0.177767 16.15994,-0.5333 0.35553,-0.355534 1.10026,-1.124479 1.10026,-2.306836 v -20.048953 c 0,-1.289844 0.18603,-2.228288 0.5581,-2.815332 0.37207,-0.587044 0.45004,-0.992187 1.36781,-1.215429 -0.91777,-0.206706 -0.99574,-0.603581 -1.36781,-1.190625 -0.37207,-0.587045 -0.5581,-1.529623 -0.5581,-2.827735 v -19.913761 c 0,-1.174088 -0.74473,-1.938899 -1.10026,-2.294433 -0.34727,-0.363802 -15.00239,-0.545703 -16.15994,-0.545703 h -0.86816 v -1.773536 h 0.78134 c 2.05879,0 17.33403,0.305924 18.02029,0.917774 0.69453,0.60358 1.0418,1.81901 1.0418,3.646289 v 19.814542 c 0,1.231966 0.22324,2.087728 0.66973,2.567285 0.44648,0.471289 1.25677,0.706934 2.43086,0.706934 h 0.76894 v 1.773535 h -0.76894 c -1.17409,0 -1.98438,0.239778 -2.43086,0.719336 -0.44649,0.479557 -0.66973,1.343587 -0.66973,2.59209 v 19.937331 c 0,1.827279 -0.34727,3.046842 -1.0418,3.658691 -0.68626,0.611849 -15.9615,0.917774 -18.02029,0.917774 h -0.78134 z" + style="font-size:25.4px;fill:#aa00d4;stroke-width:0.264583" + id="path1005-3" + inkscape:connector-curvature="0" + sodipodi:nodetypes="cccsscccsscsccscsscsccscsscscc" /> + </g> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:3.175px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583" + x="-275.85803" + y="92.633011" + id="text2157"><tspan + sodipodi:role="line" + x="-275.85803" + y="92.633011" + style="font-size:6.35px;text-align:center;text-anchor:middle;stroke-width:0.264583" + id="tspan2155">DCN</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:3.175px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583" + x="-279.29822" + y="110.19857" + id="text3141"><tspan + sodipodi:role="line" + x="-279.29822" + y="110.19857" + style="font-weight:bold;font-size:6.35px;text-align:center;text-anchor:middle;stroke-width:0.264583" + id="tspan3139">SoC</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:3.175px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583" + x="-275.85803" + y="123.8538" + id="text3375"><tspan + sodipodi:role="line" + x="-275.85803" + y="123.8538" + style="font-size:6.35px;text-align:center;text-anchor:middle;stroke-width:0.264583" + id="tspan3373">Board/Platform</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:3.175px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583" + x="-107.57491" + y="42.939579" + id="text3379"><tspan + sodipodi:role="line" + x="-107.57491" + y="42.939579" + style="font-size:6.35px;text-align:center;text-anchor:middle;stroke-width:0.264583" + id="tspan3377">Display</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:3.175px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583" + x="-182.71582" + y="46.643749" + id="text3383"><tspan + sodipodi:role="line" + x="-182.71582" + y="46.643749" + style="font-size:6.35px;text-align:center;text-anchor:middle;stroke-width:0.264583" + id="tspan3381">Connector</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:3.175px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583" + x="-182.71582" + y="93.210457" + id="text3387"><tspan + sodipodi:role="line" + x="-182.71582" + y="93.210457" + style="font-size:6.35px;text-align:center;text-anchor:middle;stroke-width:0.264583" + id="tspan3385">Connector</tspan></text> + </g> +</svg> diff --git a/Documentation/gpu/amdgpu/display/dc-components.svg b/Documentation/gpu/amdgpu/display/dc-components.svg new file mode 100644 index 000000000000..f84bb2a57c05 --- /dev/null +++ b/Documentation/gpu/amdgpu/display/dc-components.svg @@ -0,0 +1,732 @@ +<?xml version="1.0" encoding="UTF-8" standalone="no"?> +<!-- Created with Inkscape (http://www.inkscape.org/) --> + +<svg + width="533.42053" + height="631.18573" + viewBox="0 0 141.13418 167.00122" + version="1.1" + id="svg8" + inkscape:version="1.2.2 (b0a8486541, 2022-12-01)" + sodipodi:docname="dc-components.svg" + xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" + xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" + xmlns="http://www.w3.org/2000/svg" + xmlns:svg="http://www.w3.org/2000/svg" + xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" + xmlns:cc="http://creativecommons.org/ns#" + xmlns:dc="http://purl.org/dc/elements/1.1/"> + <defs + id="defs2"> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="marker8858" + style="overflow:visible" + inkscape:isstock="true"> + <path + id="path8616" + style="fill:#aa00d4;fill-opacity:1;fill-rule:evenodd;stroke:#aa00d4;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" + inkscape:connector-curvature="0" /> + </marker> + <marker + inkscape:stockid="Arrow2Send" + orient="auto" + refY="0" + refX="0" + id="Arrow2Send" + style="overflow:visible" + inkscape:isstock="true"> + <path + id="path8622" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="matrix(-0.3,0,0,-0.3,0.69,0)" + inkscape:connector-curvature="0" /> + </marker> + <marker + inkscape:stockid="Arrow1Lend" + orient="auto" + refY="0" + refX="0" + id="Arrow1Lend" + style="overflow:visible" + inkscape:isstock="true"> + <path + id="path8592" + d="M 0,0 5,-5 -12.5,0 5,5 Z" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:1pt;stroke-opacity:1" + transform="matrix(-0.8,0,0,-0.8,-10,0)" + inkscape:connector-curvature="0" /> + </marker> + <marker + inkscape:stockid="Arrow2Lend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Lend" + style="overflow:visible" + inkscape:isstock="true"> + <path + id="path8610" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="matrix(-1.1,0,0,-1.1,-1.1,0)" + inkscape:connector-curvature="0" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend" + style="overflow:visible" + inkscape:isstock="true"> + <path + id="path1200" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" + inkscape:connector-curvature="0" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3-2" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6-9" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3-2-1" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6-9-9" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3-2-7" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6-9-8" + style="fill:#008000;fill-opacity:1;fill-rule:evenodd;stroke:#008000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3-4" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6-5" + style="fill:#008000;fill-opacity:1;fill-rule:evenodd;stroke:#008000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-0" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-3" + style="fill:#008000;fill-opacity:1;fill-rule:evenodd;stroke:#008000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-6" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-1" + style="fill:#008000;fill-opacity:1;fill-rule:evenodd;stroke:#008000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3-2-6" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6-9-1" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-0-7" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-3-4" + style="fill:#008000;fill-opacity:1;fill-rule:evenodd;stroke:#008000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-6-3" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-1-0" + style="fill:#008000;fill-opacity:1;fill-rule:evenodd;stroke:#008000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3-2-8" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6-9-6" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-3" + style="overflow:visible" + inkscape:isstock="true"> + <path + id="path1200-6" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" + inkscape:connector-curvature="0" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="marker8858-3" + style="overflow:visible" + inkscape:isstock="true"> + <path + id="path8616-5" + style="fill:#00ffcc;fill-opacity:1;fill-rule:evenodd;stroke:#00ffcc;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" + inkscape:connector-curvature="0" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-3-3" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-6-56" + style="fill:#ff0000;fill-opacity:1;fill-rule:evenodd;stroke:#ff0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + <marker + inkscape:stockid="Arrow2Mend" + orient="auto" + refY="0" + refX="0" + id="Arrow2Mend-8-0-2" + style="overflow:visible" + inkscape:isstock="true"> + <path + inkscape:connector-curvature="0" + id="path1200-9-3-9" + style="fill:#008000;fill-opacity:1;fill-rule:evenodd;stroke:#008000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1" + d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z" + transform="scale(-0.6)" /> + </marker> + </defs> + <sodipodi:namedview + id="base" + pagecolor="#ffffff" + bordercolor="#666666" + borderopacity="1.0" + inkscape:pageopacity="0.0" + inkscape:pageshadow="2" + inkscape:zoom="1.4" + inkscape:cx="482.85714" + inkscape:cy="470" + inkscape:document-units="mm" + inkscape:current-layer="layer1" + showgrid="false" + inkscape:window-width="3840" + inkscape:window-height="2083" + inkscape:window-x="0" + inkscape:window-y="0" + inkscape:window-maximized="1" + showguides="false" + fit-margin-top="0" + fit-margin-left="0" + fit-margin-right="0" + fit-margin-bottom="0" + units="px" + inkscape:snap-global="false" + inkscape:showpageshadow="2" + inkscape:pagecheckerboard="0" + inkscape:deskcolor="#d1d1d1" /> + <metadata + id="metadata5"> + <rdf:RDF> + <cc:Work + rdf:about=""> + <dc:format>image/svg+xml</dc:format> + <dc:type + rdf:resource="http://purl.org/dc/dcmitype/StillImage" /> + </cc:Work> + </rdf:RDF> + </metadata> + <g + inkscape:label="Layer 1" + inkscape:groupmode="layer" + id="layer1" + transform="translate(384.1992,26.608359)"> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:4.0511px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.101278" + x="-330.72058" + y="57.56284" + id="text1063" /> + <rect + ry="4.7572436e-07" + y="-26.142614" + x="-383.73346" + height="16.447845" + width="140.2027" + id="rect744" + style="fill:none;stroke:#3771c8;stroke-width:0.93149;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <rect + ry="1.0800992e-06" + y="-5.1415901" + x="-383.27942" + height="37.343693" + width="40.239418" + id="rect602" + style="fill:none;stroke:#000000;stroke-width:0.751929;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:10.476px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163688" + x="-363.2121" + y="17.270189" + id="text3379"><tspan + sodipodi:role="line" + x="-363.2121" + y="17.270189" + style="font-size:10.476px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan3377">Core</tspan></text> + <rect + ry="1.0800992e-06" + y="-5.1415901" + x="-331.06259" + height="37.343693" + width="40.239418" + id="rect526" + style="fill:none;stroke:#000000;stroke-width:0.751929;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <rect + ry="4.4701343e-07" + y="-5.2654457" + x="-286.88507" + height="15.455184" + width="43.167706" + id="rect528" + style="fill:none;stroke:#000000;stroke-width:0.501024;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <rect + ry="4.4701343e-07" + y="15.68337" + x="-286.88507" + height="15.455184" + width="43.167706" + id="rect530" + style="fill:none;stroke:#000000;stroke-width:0.501024;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <rect + ry="4.4701343e-07" + y="36.959518" + x="-286.88507" + height="15.455184" + width="43.167706" + id="rect532" + style="fill:none;stroke:#000000;stroke-width:0.501024;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <rect + ry="1.6213723e-06" + y="60.089264" + x="-286.65378" + height="56.057846" + width="42.705132" + id="rect534" + style="fill:none;stroke:#000000;stroke-width:0.949072;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <rect + ry="4.4031123e-07" + y="37.077362" + x="-382.96875" + height="15.223459" + width="92.225845" + id="rect536" + style="fill:none;stroke:#000000;stroke-width:0.726817;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <rect + ry="4.4031123e-07" + y="59.989784" + x="-382.96875" + height="15.223459" + width="92.225845" + id="rect538" + style="fill:none;stroke:#000000;stroke-width:0.726817;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <rect + ry="4.4031123e-07" + y="80.283493" + x="-382.96875" + height="15.223459" + width="92.225845" + id="rect540" + style="fill:none;stroke:#000000;stroke-width:0.726817;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <rect + ry="4.3543034e-07" + y="124.89404" + x="-382.88803" + height="15.054706" + width="139.2859" + id="rect554" + style="fill:none;stroke:#000000;stroke-width:0.888245;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:8.73001px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163688" + x="-311.29712" + y="-16.144287" + id="text660"><tspan + sodipodi:role="line" + x="-311.29712" + y="-16.144287" + style="font-size:8.73001px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan658">Display Core API (dc/dc.h)</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:10.476px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163688" + x="-311.40384" + y="17.511137" + id="text664"><tspan + sodipodi:role="line" + x="-311.40384" + y="17.511137" + style="font-size:10.476px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan662">Link</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:4.36501px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163688" + x="-336.97806" + y="43.095863" + id="text668"><tspan + sodipodi:role="line" + x="-336.97806" + y="43.095863" + style="font-size:4.36501px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan666">Hardware Sequencer API</tspan><tspan + sodipodi:role="line" + x="-336.97806" + y="48.552124" + style="font-size:4.36501px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan670">(dc/inc/hw_sequence.h)</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:4.36501px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163688" + x="-337.03479" + y="68.73642" + id="text750"><tspan + sodipodi:role="line" + x="-337.03479" + y="68.73642" + style="font-size:4.36501px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan748">Hardware Sequencer</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:4.36501px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163688" + x="-336.98022" + y="89.209091" + id="text756"><tspan + sodipodi:role="line" + x="-336.98022" + y="89.209091" + style="font-size:4.36501px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan754">Block Level API (dc/inc/hw)</tspan></text> + <g + id="g1543" + transform="matrix(0.61866289,0,0,0.61866289,-146.50941,-10.146755)"> + <rect + ry="7.3007396e-07" + y="180.25436" + x="-382.5336" + height="25.241808" + width="29.376135" + id="rect542" + style="fill:none;stroke:#000000;stroke-width:0.528201;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:7.05556px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583" + x="-367.99722" + y="195.3941" + id="text838"><tspan + sodipodi:role="line" + x="-367.99722" + y="195.3941" + style="font-size:7.05556px;text-align:center;text-anchor:middle;stroke-width:0.264583" + id="tspan836">DCHUB</tspan></text> + </g> + <a + id="a1538" + transform="matrix(0.61866289,0,0,0.61866289,-154.037,-10.146755)"> + <rect + ry="7.3027257e-07" + y="180.25093" + x="-339.82092" + height="25.248676" + width="28.609333" + id="rect546" + style="fill:none;stroke:#000000;stroke-width:0.521332;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:7.05556px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583" + x="-325.67853" + y="195.35883" + id="text842"><tspan + sodipodi:role="line" + x="-325.67853" + y="195.35883" + style="font-size:7.05556px;text-align:center;text-anchor:middle;stroke-width:0.264583" + id="tspan840">HUBP</tspan></text> + </a> + <g + id="g1533" + transform="matrix(0.61866289,0,0,0.61866289,-154.69251,-10.146755)"> + <rect + ry="7.3027257e-07" + y="180.25093" + x="-308.59961" + height="25.248676" + width="28.609333" + id="rect844" + style="fill:none;stroke:#000000;stroke-width:0.521332;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:7.05556px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583" + x="-294.45721" + y="195.3941" + id="text848"><tspan + sodipodi:role="line" + x="-294.45721" + y="195.3941" + style="font-size:7.05556px;text-align:center;text-anchor:middle;stroke-width:0.264583" + id="tspan846">DPP</tspan></text> + </g> + <g + id="g1528" + transform="matrix(0.61866289,0,0,0.61866289,-155.67539,-10.146755)"> + <rect + ry="7.3027257e-07" + y="180.25093" + x="-276.84912" + height="25.248676" + width="28.609333" + id="rect850" + style="fill:none;stroke:#000000;stroke-width:0.521332;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:7.05556px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583" + x="-262.77728" + y="195.3941" + id="text854"><tspan + sodipodi:role="line" + x="-262.77728" + y="195.3941" + style="font-size:7.05556px;text-align:center;text-anchor:middle;stroke-width:0.264583" + id="tspan852">MPC</tspan></text> + </g> + <g + id="g1523" + transform="matrix(0.61866289,0,0,0.61866289,-157.64019,-10.146755)"> + <rect + ry="7.3027257e-07" + y="180.25093" + x="-243.51147" + height="25.248676" + width="28.609333" + id="rect856" + style="fill:none;stroke:#000000;stroke-width:0.521332;stroke-linecap:round;stroke-linejoin:bevel;stroke-miterlimit:4;stroke-dasharray:none" /> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:7.05556px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.264583" + x="-229.2068" + y="193.25275" + id="text860"><tspan + sodipodi:role="line" + x="-229.2068" + y="193.25275" + style="font-size:7.05556px;text-align:center;text-anchor:middle;stroke-width:0.264583" + id="tspan858">...</tspan></text> + </g> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:4.36501px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163688" + x="-313.35858" + y="133.55629" + id="text951"><tspan + sodipodi:role="line" + x="-313.35858" + y="133.55629" + style="font-size:4.36501px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan949">Hardware Registers</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:4.36501px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163688" + x="-265.39505" + y="86.926537" + id="text1044"><tspan + sodipodi:role="line" + x="-265.39505" + y="86.926537" + style="font-size:4.36501px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan1042">DMUB</tspan><tspan + sodipodi:role="line" + x="-265.39505" + y="92.382797" + style="font-size:4.36501px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan1046">Block</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:4.36501px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163688" + x="-265.42343" + y="43.272846" + id="text1052"><tspan + sodipodi:role="line" + x="-265.42343" + y="43.272846" + style="font-size:4.36501px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan1048">DMUB Hardware API</tspan><tspan + sodipodi:role="line" + x="-265.42343" + y="48.729107" + style="font-size:4.36501px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan1050">(dmub/dmub_srv.h)</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:4.36501px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163688" + x="-265.40161" + y="24.997644" + id="text1058"><tspan + sodipodi:role="line" + x="-265.40161" + y="24.997644" + style="font-size:4.36501px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan1056">DMUB Service</tspan></text> + <text + xml:space="preserve" + style="font-style:normal;font-weight:normal;font-size:4.36501px;line-height:1.25;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:0.163688" + x="-265.30121" + y="0.99768418" + id="text1064"><tspan + sodipodi:role="line" + x="-265.30121" + y="0.99768418" + style="font-size:4.36501px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan1062">DMUB Service API</tspan><tspan + sodipodi:role="line" + x="-265.30121" + y="6.4539466" + style="font-size:4.36501px;text-align:center;text-anchor:middle;stroke-width:0.163688" + id="tspan1066">(dc/dc_dmub_srv.h)</tspan></text> + </g> +</svg> diff --git a/Documentation/gpu/amdgpu/display/dc-debug.rst b/Documentation/gpu/amdgpu/display/dc-debug.rst index 817631b1dbf3..013f63b271f3 100644 --- a/Documentation/gpu/amdgpu/display/dc-debug.rst +++ b/Documentation/gpu/amdgpu/display/dc-debug.rst @@ -2,6 +2,181 @@ Display Core Debug tools ======================== +In this section, you will find helpful information on debugging the amdgpu +driver from the display perspective. This page introduces debug mechanisms and +procedures to help you identify if some issues are related to display code. + +Narrow down display issues +========================== + +Since the display is the driver's visual component, it is common to see users +reporting issues as a display when another component causes the problem. This +section equips users to determine if a specific issue was caused by the display +component or another part of the driver. + +DC dmesg important messages +--------------------------- + +The dmesg log is the first source of information to be checked, and amdgpu +takes advantage of this feature by logging some valuable information. When +looking for the issues associated with amdgpu, remember that each component of +the driver (e.g., smu, PSP, dm, etc.) is loaded one by one, and this +information can be found in the dmesg log. In this sense, look for the part of +the log that looks like the below log snippet:: + + [ 4.254295] [drm] initializing kernel modesetting (IP DISCOVERY 0x1002:0x744C 0x1002:0x0E3B 0xC8). + [ 4.254718] [drm] register mmio base: 0xFCB00000 + [ 4.254918] [drm] register mmio size: 1048576 + [ 4.260095] [drm] add ip block number 0 <soc21_common> + [ 4.260318] [drm] add ip block number 1 <gmc_v11_0> + [ 4.260510] [drm] add ip block number 2 <ih_v6_0> + [ 4.260696] [drm] add ip block number 3 <psp> + [ 4.260878] [drm] add ip block number 4 <smu> + [ 4.261057] [drm] add ip block number 5 <dm> + [ 4.261231] [drm] add ip block number 6 <gfx_v11_0> + [ 4.261402] [drm] add ip block number 7 <sdma_v6_0> + [ 4.261568] [drm] add ip block number 8 <vcn_v4_0> + [ 4.261729] [drm] add ip block number 9 <jpeg_v4_0> + [ 4.261887] [drm] add ip block number 10 <mes_v11_0> + +From the above example, you can see the line that reports that `<dm>`, +(**Display Manager**), was loaded, which means that display can be part of the +issue. If you do not see that line, something else might have failed before +amdgpu loads the display component, indicating that we don't have a +display issue. + +After you identified that the DM was loaded correctly, you can check for the +display version of the hardware in use, which can be retrieved from the dmesg +log with the command:: + + dmesg | grep -i 'display core' + +This command shows a message that looks like this:: + + [ 4.655828] [drm] Display Core v3.2.285 initialized on DCN 3.2 + +This message has two key pieces of information: + +* **The DC version (e.g., v3.2.285)**: Display developers release a new DC version + every week, and this information can be advantageous in a situation where a + user/developer must find a good point versus a bad point based on a tested + version of the display code. Remember from page :ref:`Display Core <amdgpu-display-core>`, + that every week the new patches for display are heavily tested with IGT and + manual tests. +* **The DCN version (e.g., DCN 3.2)**: The DCN block is associated with the + hardware generation, and the DCN version conveys the hardware generation that + the driver is currently running. This information helps to narrow down the + code debug area since each DCN version has its files in the DC folder per DCN + component (from the example, the developer might want to focus on + files/folders/functions/structs with the dcn32 label might be executed). + However, keep in mind that DC reuses code across different DCN versions; for + example, it is expected to have some callbacks set in one DCN that are the same + as those from another DCN. In summary, use the DCN version just as a guide. + +From the dmesg file, it is also possible to get the ATOM bios code by using:: + + dmesg | grep -i 'ATOM BIOS' + +Which generates an output that looks like this:: + + [ 4.274534] amdgpu: ATOM BIOS: 113-D7020100-102 + +This type of information is useful to be reported. + +Avoid loading display core +-------------------------- + +Sometimes, it might be hard to figure out which part of the driver is causing +the issue; if you suspect that the display is not part of the problem and your +bug scenario is simple (e.g., some desktop configuration) you can try to remove +the display component from the equation. First, you need to identify `dm` ID +from the dmesg log; for example, search for the following log:: + + [ 4.254295] [drm] initializing kernel modesetting (IP DISCOVERY 0x1002:0x744C 0x1002:0x0E3B 0xC8). + [..] + [ 4.260095] [drm] add ip block number 0 <soc21_common> + [ 4.260318] [drm] add ip block number 1 <gmc_v11_0> + [..] + [ 4.261057] [drm] add ip block number 5 <dm> + +Notice from the above example that the `dm` id is 5 for this specific hardware. +Next, you need to run the following binary operation to identify the IP block +mask:: + + 0xffffffff & ~(1 << [DM ID]) + +From our example the IP mask is:: + + 0xffffffff & ~(1 << 5) = 0xffffffdf + +Finally, to disable DC, you just need to set the below parameter in your +bootloader:: + + amdgpu.ip_block_mask = 0xffffffdf + +If you can boot your system with the DC disabled and still see the issue, it +means you can rule DC out of the equation. However, if the bug disappears, you +still need to consider the DC part of the problem and keep narrowing down the +issue. In some scenarios, disabling DC is impossible since it might be +necessary to use the display component to reproduce the issue (e.g., play a +game). + +**Note: This will probably lead to the absence of a display output.** + +Display flickering +------------------ + +Display flickering might have multiple causes; one is the lack of proper power +to the GPU or problems in the DPM switches. A good first generic verification +is to set the GPU to use high voltage:: + + bash -c "echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level" + +The above command sets the GPU/APU to use the maximum power allowed which +disables DPM switches. If forcing DPM levels high does not fix the issue, it +is less likely that the issue is related to power management. If the issue +disappears, there is a good chance that other components might be involved, and +the display should not be ignored since this could be a DPM issues. From the +display side, if the power increase fixes the issue, it is worth debugging the +clock configuration and the pipe split police used in the specific +configuration. + +Display artifacts +----------------- + +Users may see some screen artifacts that can be categorized into two different +types: localized artifacts and general artifacts. The localized artifacts +happen in some specific areas, such as around the UI window corners; if you see +this type of issue, there is a considerable chance that you have a userspace +problem, likely Mesa or similar. The general artifacts usually happen on the +entire screen. They might be caused by a misconfiguration at the driver level +of the display parameters, but the userspace might also cause this issue. One +way to identify the source of the problem is to take a screenshot or make a +desktop video capture when the problem happens; after checking the +screenshot/video recording, if you don't see any of the artifacts, it means +that the issue is likely on the the driver side. If you can still see the +problem in the data collected, it is an issue that probably happened during +rendering, and the display code just got the framebuffer already corrupted. + +Disabling/Enabling specific features +==================================== + +DC has a struct named `dc_debug_options`, which is statically initialized by +all DCE/DCN components based on the specific hardware characteristic. This +structure usually facilitates the bring-up phase since developers can start +with many disabled features and enable them individually. This is also an +important debug feature since users can change it when debugging specific +issues. + +For example, dGPU users sometimes see a problem where a horizontal fillet of +flickering happens in some specific part of the screen. This could be an +indication of Sub-Viewport issues; after the users identified the target DCN, +they can set the `force_disable_subvp` field to true in the statically +initialized version of `dc_debug_options` to see if the issue gets fixed. Along +the same lines, users/developers can also try to turn off `fams2_config` and +`enable_single_display_2to1_odm_policy`. In summary, the `dc_debug_options` is +an interesting form for identifying the problem. + DC Visual Confirmation ====================== @@ -76,6 +251,18 @@ change in real-time by using something like:: When reporting a bug related to DC, consider attaching this log before and after you reproduce the bug. +Collect Firmware information +============================ + +When reporting issues, it is important to have the firmware information since +it can be helpful for debugging purposes. To get all the firmware information, +use the command:: + + cat /sys/kernel/debug/dri/0/amdgpu_firmware_info + +From the display perspective, pay attention to the firmware of the DMCU and +DMCUB. + DMUB Firmware Debug =================== diff --git a/Documentation/gpu/amdgpu/display/dcn-blocks.rst b/Documentation/gpu/amdgpu/display/dcn-blocks.rst index 5e34366f6dbe..756957128dad 100644 --- a/Documentation/gpu/amdgpu/display/dcn-blocks.rst +++ b/Documentation/gpu/amdgpu/display/dcn-blocks.rst @@ -1,3 +1,5 @@ +.. _dcn_blocks: + ========== DCN Blocks ========== diff --git a/Documentation/gpu/amdgpu/display/dcn-overview.rst b/Documentation/gpu/amdgpu/display/dcn-overview.rst index 9fea6500448b..eb54a6802e04 100644 --- a/Documentation/gpu/amdgpu/display/dcn-overview.rst +++ b/Documentation/gpu/amdgpu/display/dcn-overview.rst @@ -1,3 +1,5 @@ +.. _dcn_overview: + ======================= Display Core Next (DCN) ======================= diff --git a/Documentation/gpu/amdgpu/display/index.rst b/Documentation/gpu/amdgpu/display/index.rst index f0c342e00a39..bd2d797c123e 100644 --- a/Documentation/gpu/amdgpu/display/index.rst +++ b/Documentation/gpu/amdgpu/display/index.rst @@ -90,6 +90,7 @@ table of content: display-manager.rst dcn-overview.rst dcn-blocks.rst + programming-model-dcn.rst mpo-overview.rst dc-debug.rst display-contributing.rst diff --git a/Documentation/gpu/amdgpu/display/programming-model-dcn.rst b/Documentation/gpu/amdgpu/display/programming-model-dcn.rst new file mode 100644 index 000000000000..c1b48d49fb0b --- /dev/null +++ b/Documentation/gpu/amdgpu/display/programming-model-dcn.rst @@ -0,0 +1,162 @@ +==================== +DC Programming Model +==================== + +In the :ref:`Display Core Next (DCN) <dcn_overview>` and :ref:`DCN Block +<dcn_blocks>` pages, you learned about the hardware components and how they +interact with each other. On this page, the focus is shifted to the display +code architecture. Hence, it is reasonable to remind the reader that the code +in DC is shared with other OSes; for this reason, DC provides a set of +abstractions and operations to connect different APIs with the hardware +configuration. See DC as a service available for a Display Manager (amdgpu_dm) +to access and configure DCN/DCE hardware (DCE is also part of DC, but for +simplicity's sake, this documentation only examines DCN). + +.. note:: + For this page, we will use the term GPU to refers to dGPU and APU. + +Overview +======== + +From the display hardware perspective, it is plausible to expect that if a +problem is well-defined, it will probably be implemented at the hardware level. +On the other hand, when there are multiple ways of achieving something without +a very well-defined scope, the solution is usually implemented as a policy at +the DC level. In other words, some policies are defined in the DC core +(resource management, power optimization, image quality, etc.), and the others +implemented in hardware are enabled via DC configuration. + +In terms of hardware management, DCN has multiple instances of the same block +(e.g., HUBP, DPP, MPC, etc), and during the driver execution, it might be +necessary to use some of these instances. The core has policies in place for +handling those instances. Regarding resource management, the DC objective is +quite simple: minimize the hardware shuffle when the driver performs some +actions. When the state changes from A to B, the transition is considered +easier to maneuver if the hardware resource is still used for the same set of +driver objects. Usually, adding and removing a resource to a `pipe_ctx` (more +details below) is not a problem; however, moving a resource from one `pipe_ctx` +to another should be avoided. + +Another area of influence for DC is power optimization, which has a myriad of +arrangement possibilities. In some way, just displaying an image via DCN should +be relatively straightforward; however, showing it with the best power +footprint is more desirable, but it has many associated challenges. +Unfortunately, there is no straight-forward analytic way to determine if a +configuration is the best one for the context due to the enormous variety of +variables related to this problem (e.g., many different DCN/DCE hardware +versions, different displays configurations, etc.) for this reason DC +implements a dedicated library for trying some configuration and verify if it +is possible to support it or not. This type of policy is extremely complex to +create and maintain, and amdgpu driver relies on Display Mode Library (DML) to +generate the best decisions. + +In summary, DC must deal with the complexity of handling multiple scenarios and +determine policies to manage them. All of the above information is conveyed to +give the reader some idea about the complexity of driving a display from the +driver's perspective. This page hopes to allow the reader to better navigate +over the amdgpu display code. + +Display Driver Architecture Overview +==================================== + +The diagram below provides an overview of the display driver architecture; +notice it illustrates the software layers adopted by DC: + +.. kernel-figure:: dc-components.svg + +The first layer of the diagram is the high-level DC API represented by the +`dc.h` file; below it are two big blocks represented by Core and Link. Next is +the hardware configuration block; the main file describing it is +the`hw_sequencer.h`, where the implementation of the callbacks can be found in +the hardware sequencer folder. Almost at the end, you can see the block level +API (`dc/inc/hw`), which represents each DCN low-level block, such as HUBP, +DPP, MPC, OPTC, etc. Notice on the left side of the diagram that we have a +different set of layers representing the interaction with the DMUB +microcontroller. + +Basic Objects +------------- + +The below diagram outlines the basic display objects. In particular, pay +attention to the names in the boxes since they represent a data structure in +the driver: + +.. kernel-figure:: dc-arch-overview.svg + +Let's start with the central block in the image, `dc`. The `dc` struct is +initialized per GPU; for example, one GPU has one `dc` instance, two GPUs have +two `dc` instances, and so forth. In other words we have one 'dc' per 'amdgpu' +instance. In some ways, this object behaves like the `Singleton` pattern. + +After the `dc` block in the diagram, you can see the `dc_link` component, which +is a low-level abstraction for the connector. One interesting aspect of the +image is that connectors are not part of the DCN block; they are defined by the +platform/board and not by the SoC. The `dc_link` struct is the high-level data +container with information such as connected sinks, connection status, signal +types, etc. After `dc_link`, there is the `dc_sink`, which is the object that +represents the connected display. + +.. note:: + For historical reasons, we used the name `dc_link`, which gives the + wrong impression that this abstraction only deals with physical connections + that the developer can easily manipulate. However, this also covers + conections like eDP or cases where the output is connected to other devices. + +There are two structs that are not represented in the diagram since they were +elaborated in the DCN overview page (check the DCN block diagram :ref:`Display +Core Next (DCN) <dcn_overview>`); still, it is worth bringing back for this +overview which is `dc_stream` and `dc_state`. The `dc_stream` stores many +properties associated with the data transmission, but most importantly, it +represents the data flow from the connector to the display. Next we have +`dc_state`, which represents the logic state within the hardware at the moment; +`dc_state` is composed of `dc_stream` and `dc_plane`. The `dc_stream` is the DC +version of `drm_crtc` and represents the post-blending pipeline. + +Speaking of the `dc_plane` data structure (first part of the diagram), you can +think about it as an abstraction similar to `drm_plane` that represents the +pre-blending portion of the pipeline. This image was probably processed by GFX +and is ready to be composited under a `dc_stream`. Normally, the driver may +have one or more `dc_plane` connected to the same `dc_stream`, which defines a +composition at the DC level. + +Basic Operations +---------------- + +Now that we have covered the basic objects, it is time to examine some of the +basic hardware/software operations. Let's start with the `dc_create()` +function, which directly works with the `dc` data struct; this function behaves +like a constructor responsible for the basic software initialization and +preparing for enabling other parts of the API. It is important to highlight +that this operation does not touch any hardware configuration; it is only a +software initialization. + +Next, we have the `dc_hardware_init()`, which also relies on the `dc` data +struct. Its main function is to put the hardware in a valid state. It is worth +highlighting that the hardware might initialize in an unknown state, and it is +a requirement to put it in a valid state; this function has multiple callbacks +for the hardware-specific initialization, whereas `dc_hardware_init` does the +hardware initialization and is the first point where we touch hardware. + +The `dc_get_link_at_index` is an operation that depends on the `dc_link` data +structure. This function retrieves and enumerates all the `dc_links` available +on the device; this is required since this information is not part of the SoC +definition but depends on the board configuration. As soon as the `dc_link` is +initialized, it is useful to figure out if any of them are already connected to +the display by using the `dc_link_detect()` function. After the driver figures +out if any display is connected to the device, the challenging phase starts: +configuring the monitor to show something. Nonetheless, dealing with the ideal +configuration is not a DC task since this is the Display Manager (`amdgpu_dm`) +responsibility which in turn is responsible for dealing with the atomic +commits. The only interface DC provides to the configuration phase is the +function `dc_validate_with_context` that receives the configuration information +and, based on that, validates whether the hardware can support it or not. It is +important to add that even if the display supports some specific configuration, +it does not mean the DCN hardware can support it. + +After the DM and DC agree upon the configuration, the stream configuration +phase starts. This task activates one or more `dc_stream` at this phase, and in +the best-case scenario, you might be able to turn the display on with a black +screen (it does not show anything yet since it does not have any plane +associated with it). The final step would be to call the +`dc_update_planes_and_stream,` which will add or remove planes. + diff --git a/Documentation/gpu/amdgpu/index.rst b/Documentation/gpu/amdgpu/index.rst index 847e04924030..302d039928ee 100644 --- a/Documentation/gpu/amdgpu/index.rst +++ b/Documentation/gpu/amdgpu/index.rst @@ -16,4 +16,5 @@ Next (GCN), Radeon DNA (RDNA), and Compute DNA (CDNA) architectures. thermal driver-misc debugging + process-isolation amdgpu-glossary diff --git a/Documentation/gpu/amdgpu/process-isolation.rst b/Documentation/gpu/amdgpu/process-isolation.rst new file mode 100644 index 000000000000..6b6d70e357a7 --- /dev/null +++ b/Documentation/gpu/amdgpu/process-isolation.rst @@ -0,0 +1,59 @@ +.. SPDX-License-Identifier: GPL-2.0 + +========================= + AMDGPU Process Isolation +========================= + +The AMDGPU driver includes a feature that enables automatic process isolation on the graphics engine. This feature serializes access to the graphics engine and adds a cleaner shader which clears the Local Data Store (LDS) and General Purpose Registers (GPRs) between jobs. All processes using the GPU, including both graphics and compute workloads, are serialized when this feature is enabled. On GPUs that support partitionable graphics engines, this feature can be enabled on a per-partition basis. + +In addition, there is an interface to manually run the cleaner shader when the use of the GPU is complete. This may be preferable in some use cases, such as a single-user system where the login manager triggers the cleaner shader when the user logs out. + +Process Isolation +================= + +The `run_cleaner_shader` and `enforce_isolation` sysfs interfaces allow users to manually execute the cleaner shader and control the process isolation feature, respectively. + +Partition Handling +------------------ + +The `enforce_isolation` file in sysfs can be used to enable process isolation and automatic shader cleanup between processes. On GPUs that support graphics engine partitioning, this can be enabled per partition. The partition and its current setting (0 disabled, 1 enabled) can be read from sysfs. On GPUs that do not support graphics engine partitioning, only a single partition will be present. Writing 1 to the partition position enables enforce isolation, writing 0 disables it. + +Example of enabling enforce isolation on a GPU with multiple partitions: + +.. code-block:: console + + $ echo 1 0 1 0 > /sys/class/drm/card0/device/enforce_isolation + $ cat /sys/class/drm/card0/device/enforce_isolation + 1 0 1 0 + +The output indicates that enforce isolation is enabled on zeroth and second parition and disabled on first and fourth parition. + +For devices with a single partition or those that do not support partitions, there will be only one element: + +.. code-block:: console + + $ echo 1 > /sys/class/drm/card0/device/enforce_isolation + $ cat /sys/class/drm/card0/device/enforce_isolation + 1 + +Cleaner Shader Execution +======================== + +The driver can trigger a cleaner shader to clean up the LDS and GPR state on the graphics engine. When process isolation is enabled, this happens automatically between processes. In addition, there is a sysfs file to manually trigger cleaner shader execution. + +To manually trigger the execution of the cleaner shader, write `0` to the `run_cleaner_shader` sysfs file: + +.. code-block:: console + + $ echo 0 > /sys/class/drm/card0/device/run_cleaner_shader + +For multi-partition devices, you can specify the partition index when triggering the cleaner shader: + +.. code-block:: console + + $ echo 0 > /sys/class/drm/card0/device/run_cleaner_shader # For partition 0 + $ echo 1 > /sys/class/drm/card0/device/run_cleaner_shader # For partition 1 + $ echo 2 > /sys/class/drm/card0/device/run_cleaner_shader # For partition 2 + # ... and so on for each partition + +This command initiates the cleaner shader, which will run and complete before any new tasks are scheduled on the GPU. diff --git a/Documentation/gpu/amdgpu/thermal.rst b/Documentation/gpu/amdgpu/thermal.rst index 6d942b5c58f0..1768a106aab1 100644 --- a/Documentation/gpu/amdgpu/thermal.rst +++ b/Documentation/gpu/amdgpu/thermal.rst @@ -100,6 +100,18 @@ fan_minimum_pwm .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c :doc: fan_minimum_pwm +fan_zero_rpm_enable +---------------------- + +.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c + :doc: fan_zero_rpm_enable + +fan_zero_rpm_stop_temperature +----------------------------- + +.. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c + :doc: fan_zero_rpm_stop_temperature + GFXOFF ====== diff --git a/Documentation/gpu/automated_testing.rst b/Documentation/gpu/automated_testing.rst index 2d5a28866afe..6d7c6086034d 100644 --- a/Documentation/gpu/automated_testing.rst +++ b/Documentation/gpu/automated_testing.rst @@ -68,19 +68,25 @@ known to behave unreliably. These tests won't cause a job to fail regardless of the result. They will still be run. Each new flake entry must be associated with a link to the email reporting the -bug to the author of the affected driver, the board name or Device Tree name of -the board, the first kernel version affected, the IGT version used for tests, -and an approximation of the failure rate. +bug to the author of the affected driver or the relevant GitLab issue. The entry +must also include the board name or Device Tree name, the first kernel version +affected, the IGT version used for tests, and an approximation of the failure rate. They should be provided under the following format:: - # Bug Report: $LORE_OR_PATCHWORK_URL + # Bug Report: $LORE_URL_OR_GITLAB_ISSUE # Board Name: broken-board.dtb # Linux Version: 6.6-rc1 # IGT Version: 1.28-gd2af13d9f # Failure Rate: 100 flaky-test +Use the appropriate link below to create a GitLab issue: +amdgpu driver: https://gitlab.freedesktop.org/drm/amd/-/issues +i915 driver: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues +msm driver: https://gitlab.freedesktop.org/drm/msm/-/issues +xe driver: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues + drivers/gpu/drm/ci/${DRIVER_NAME}-${HW_REVISION}-skips.txt ----------------------------------------------------------- diff --git a/Documentation/gpu/drivers.rst b/Documentation/gpu/drivers.rst index b899cbc5c2b4..1f17ad0790d7 100644 --- a/Documentation/gpu/drivers.rst +++ b/Documentation/gpu/drivers.rst @@ -22,6 +22,8 @@ GPU Driver Documentation afbc komeda-kms panfrost + panthor + zynqmp .. only:: subproject and html diff --git a/Documentation/gpu/drm-client.rst b/Documentation/gpu/drm-client.rst index 58b5a1d1219d..cbcfe30de777 100644 --- a/Documentation/gpu/drm-client.rst +++ b/Documentation/gpu/drm-client.rst @@ -13,3 +13,6 @@ Kernel clients .. kernel-doc:: drivers/gpu/drm/drm_client_modeset.c :export: + +.. kernel-doc:: drivers/gpu/drm/drm_client_event.c + :export: diff --git a/Documentation/gpu/drm-internals.rst b/Documentation/gpu/drm-internals.rst index 11d9a5730fb2..cb9ae282771c 100644 --- a/Documentation/gpu/drm-internals.rst +++ b/Documentation/gpu/drm-internals.rst @@ -75,18 +75,6 @@ Module Initialization .. kernel-doc:: include/drm/drm_module.h :doc: overview -Managing Ownership of the Framebuffer Aperture ----------------------------------------------- - -.. kernel-doc:: drivers/gpu/drm/drm_aperture.c - :doc: overview - -.. kernel-doc:: include/drm/drm_aperture.h - :internal: - -.. kernel-doc:: drivers/gpu/drm/drm_aperture.c - :export: - Device Instance and Driver Handling ----------------------------------- diff --git a/Documentation/gpu/drm-kms-helpers.rst b/Documentation/gpu/drm-kms-helpers.rst index c3e58856f75b..8cf2f041af47 100644 --- a/Documentation/gpu/drm-kms-helpers.rst +++ b/Documentation/gpu/drm-kms-helpers.rst @@ -110,15 +110,6 @@ fbdev Helper Functions Reference .. kernel-doc:: drivers/gpu/drm/drm_fb_helper.c :doc: fbdev helpers -.. kernel-doc:: drivers/gpu/drm/drm_fbdev_dma.c - :export: - -.. kernel-doc:: drivers/gpu/drm/drm_fbdev_shmem.c - :export: - -.. kernel-doc:: drivers/gpu/drm/drm_fbdev_ttm.c - :export: - .. kernel-doc:: include/drm/drm_fb_helper.h :internal: diff --git a/Documentation/gpu/drm-uapi.rst b/Documentation/gpu/drm-uapi.rst index 370d820be248..b75cc9a70d1f 100644 --- a/Documentation/gpu/drm-uapi.rst +++ b/Documentation/gpu/drm-uapi.rst @@ -305,13 +305,26 @@ Kernel Mode Driver ------------------ The KMD is responsible for checking if the device needs a reset, and to perform -it as needed. Usually a hang is detected when a job gets stuck executing. KMD -should keep track of resets, because userspace can query any time about the -reset status for a specific context. This is needed to propagate to the rest of -the stack that a reset has happened. Currently, this is implemented by each -driver separately, with no common DRM interface. Ideally this should be properly -integrated at DRM scheduler to provide a common ground for all drivers. After a -reset, KMD should reject new command submissions for affected contexts. +it as needed. Usually a hang is detected when a job gets stuck executing. + +Propagation of errors to userspace has proven to be tricky since it goes in +the opposite direction of the usual flow of commands. Because of this vendor +independent error handling was added to the &dma_fence object, this way drivers +can add an error code to their fences before signaling them. See function +dma_fence_set_error() on how to do this and for examples of error codes to use. + +The DRM scheduler also allows setting error codes on all pending fences when +hardware submissions are restarted after an reset. Error codes are also +forwarded from the hardware fence to the scheduler fence to bubble up errors +to the higher levels of the stack and eventually userspace. + +Fence errors can be queried by userspace through the generic SYNC_IOC_FILE_INFO +IOCTL as well as through driver specific interfaces. + +Additional to setting fence errors drivers should also keep track of resets per +context, the DRM scheduler provides the drm_sched_entity_error() function as +helper for this use case. After a reset, KMD should reject new command +submissions for affected contexts. User Mode Driver ---------------- diff --git a/Documentation/gpu/drm-usage-stats.rst b/Documentation/gpu/drm-usage-stats.rst index a80f95ca1b2f..2717cb2a597e 100644 --- a/Documentation/gpu/drm-usage-stats.rst +++ b/Documentation/gpu/drm-usage-stats.rst @@ -73,6 +73,11 @@ scope of each device, in which case `drm-pdev` shall be present as well. Userspace should make sure to not double account any usage statistics by using the above described criteria in order to associate data to individual clients. +- drm-client-name: <valstr> + +String optionally set by userspace using DRM_IOCTL_SET_CLIENT_NAME. + + Utilization ^^^^^^^^^^^ @@ -144,7 +149,9 @@ Memory Each possible memory type which can be used to store buffer objects by the GPU in question shall be given a stable and unique name to be returned as the -string here. The name "memory" is reserved to refer to normal system memory. +string here. + +The region name "memory" is reserved to refer to normal system memory. Value shall reflect the amount of storage currently consumed by the buffer objects belong to this client, in the respective memory region. @@ -152,6 +159,9 @@ objects belong to this client, in the respective memory region. Default unit shall be bytes with optional unit specifiers of 'KiB' or 'MiB' indicating kibi- or mebi-bytes. +This key is deprecated and is an alias for drm-resident-<region>. Only one of +the two should be present in the output. + - drm-shared-<region>: <uint> [KiB|MiB] The total size of buffers that are shared with another file (e.g., have more @@ -159,20 +169,34 @@ than a single handle). - drm-total-<region>: <uint> [KiB|MiB] -The total size of buffers that including shared and private memory. +The total size of all created buffers including shared and private memory. The +backing store for the buffers does not have to be currently instantiated to be +counted under this category. - drm-resident-<region>: <uint> [KiB|MiB] -The total size of buffers that are resident in the specified region. +The total size of buffers that are resident (have their backing store present or +instantiated) in the specified region. + +This is an alias for drm-memory-<region> and only one of the two should be +present in the output. - drm-purgeable-<region>: <uint> [KiB|MiB] The total size of buffers that are purgeable. +For example drivers which implement a form of 'madvise' like functionality can +here count buffers which have instantiated backing store, but have been marked +with an equivalent of MADV_DONTNEED. + - drm-active-<region>: <uint> [KiB|MiB] The total size of buffers that are active on one or more engines. +One practical example of this can be presence of unsignaled fences in an GEM +buffer reservation object. Therefore the active category is a subset of +resident. + Implementation Details ====================== @@ -186,4 +210,5 @@ Driver specific implementations * :ref:`i915-usage-stats` * :ref:`panfrost-usage-stats` +* :ref:`panthor-usage-stats` * :ref:`xe-usage-stats` diff --git a/Documentation/gpu/i915.rst b/Documentation/gpu/i915.rst index ad59ae579237..7a469df675d8 100644 --- a/Documentation/gpu/i915.rst +++ b/Documentation/gpu/i915.rst @@ -35,10 +35,10 @@ Interrupt Handling :functions: intel_irq_init intel_irq_init_hw intel_hpd_init .. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c - :functions: intel_runtime_pm_disable_interrupts + :functions: intel_irq_suspend .. kernel-doc:: drivers/gpu/drm/i915/i915_irq.c - :functions: intel_runtime_pm_enable_interrupts + :functions: intel_irq_resume Intel GVT-g Guest Support(vGPU) ------------------------------- diff --git a/Documentation/gpu/msm-preemption.rst b/Documentation/gpu/msm-preemption.rst new file mode 100644 index 000000000000..d768ca09fdec --- /dev/null +++ b/Documentation/gpu/msm-preemption.rst @@ -0,0 +1,99 @@ +.. SPDX-License-Identifier: GPL-2.0 + +:orphan: + +============== +MSM Preemption +============== + +Preemption allows Adreno GPUs to switch to a higher priority ring when work is +pushed to it, reducing latency for high priority submissions. + +When preemption is enabled 4 rings are initialized, corresponding to different +priority levels. Having multiple rings is purely a software concept as the GPU +only has registers to keep track of one graphics ring. +The kernel is able to switch which ring is currently being processed by +requesting preemption. When certain conditions are met, depending on the +priority level, the GPU will save its current state in a series of buffers, +then restores state from a similar set of buffers specified by the kernel. It +then resumes execution and fires an IRQ to let the kernel know the context +switch has completed. + +This mechanism can be used by the kernel to switch between rings. Whenever a +submission occurs the kernel finds the highest priority ring which isn't empty +and preempts to it if said ring is not the one being currently executed. This is +also done whenever a submission completes to make sure execution resumes on a +lower priority ring when a higher priority ring is done. + +Preemption levels +----------------- + +Preemption can only occur at certain boundaries. The exact conditions can be +configured by changing the preemption level, this allows to compromise between +latency (ie. the time that passes between when the kernel requests preemption +and when the SQE begins saving state) and overhead (the amount of state that +needs to be saved). + +The GPU offers 3 levels: + +Level 0 + Preemption only occurs at the submission level. This requires the least amount + of state to be saved as the execution of userspace submitted IBs is never + interrupted, however it offers very little benefit compared to not enabling + preemption of any kind. + +Level 1 + Preemption occurs at either bin level, if using GMEM rendering, or draw level + in the sysmem rendering case. + +Level 2 + Preemption occurs at draw level. + +Level 1 is the mode that is used by the msm driver. + +Additionally the GPU allows to specify a `skip_save_restore` option. This +disables the saving and restoring of all registers except those relating to the +operation of the SQE itself, reducing overhead. Saving and restoring is only +skipped when using GMEM with Level 1 preemption. When enabling this userspace is +expected to set the state that isn't preserved whenever preemption occurs which +is done by specifying preamble and postambles. Those are IBs that are executed +before and after preemption. + +Preemption buffers +------------------ + +A series of buffers are necessary to store the state of rings while they are not +being executed. There are different kinds of preemption records and most of +those require one buffer per ring. This is because preemption never occurs +between submissions on the same ring, which always run in sequence when the ring +is active. This means that only one context per ring is effectively active. + +SMMU_INFO + This buffer contains info about the current SMMU configuration such as the + ttbr0 register. The SQE firmware isn't actually able to save this record. + As a result SMMU info must be saved manually from the CP to a buffer and the + SMMU record updated with info from said buffer before triggering + preemption. + +NON_SECURE + This is the main preemption record where most state is saved. It is mostly + opaque to the kernel except for the first few words that must be initialized + by the kernel. + +SECURE + This saves state related to the GPU's secure mode. + +NON_PRIV + The intended purpose of this record is unknown. The SQE firmware actually + ignores it and therefore msm doesn't handle it. + +COUNTER + This record is used to save and restore performance counters. + +Handling the permissions of those buffers is critical for security. All but the +NON_PRIV records need to be inaccessible from userspace, so they must be mapped +in the kernel address space with the MSM_BO_MAP_PRIV flag. +For example, making the NON_SECURE record accessible from userspace would allow +any process to manipulate a saved ring's RPTR which can be used to skip the +execution of some packets in a ring and execute user commands with higher +privileges. diff --git a/Documentation/gpu/panthor.rst b/Documentation/gpu/panthor.rst new file mode 100644 index 000000000000..3f8979fa2b86 --- /dev/null +++ b/Documentation/gpu/panthor.rst @@ -0,0 +1,46 @@ +.. SPDX-License-Identifier: GPL-2.0+ + +========================= + drm/Panthor CSF driver +========================= + +.. _panthor-usage-stats: + +Panthor DRM client usage stats implementation +============================================== + +The drm/Panthor driver implements the DRM client usage stats specification as +documented in :ref:`drm-client-usage-stats`. + +Example of the output showing the implemented key value pairs and entirety of +the currently possible format options: + +:: + pos: 0 + flags: 02400002 + mnt_id: 29 + ino: 491 + drm-driver: panthor + drm-client-id: 10 + drm-engine-panthor: 111110952750 ns + drm-cycles-panthor: 94439687187 + drm-maxfreq-panthor: 1000000000 Hz + drm-curfreq-panthor: 1000000000 Hz + drm-total-memory: 16480 KiB + drm-shared-memory: 0 + drm-active-memory: 16200 KiB + drm-resident-memory: 16480 KiB + drm-purgeable-memory: 0 + +Possible `drm-engine-` key names are: `panthor`. +`drm-curfreq-` values convey the current operating frequency for that engine. + +Users must bear in mind that engine and cycle sampling are disabled by default, +because of power saving concerns. `fdinfo` users and benchmark applications which +query the fdinfo file must make sure to toggle the job profiling status of the +driver by writing into the appropriate sysfs node:: + + echo <N> > /sys/bus/platform/drivers/panthor/[a-f0-9]*.gpu/profiling + +Where `N` is a bit mask where cycle and timestamp sampling are respectively +enabled by the first and second bits. diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst index 2b281e3c75a4..256d0d1cb216 100644 --- a/Documentation/gpu/todo.rst +++ b/Documentation/gpu/todo.rst @@ -834,6 +834,22 @@ Contact: Javier Martinez Canillas <javierm@redhat.com> Level: Advanced +Querying errors from drm_syncobj +================================ + +The drm_syncobj container can be used by driver independent code to signal +complection of submission. + +One minor feature still missing is a generic DRM IOCTL to query the error +status of binary and timeline drm_syncobj. + +This should probably be improved by implementing the necessary kernel interface +and adding support for that in the userspace stack. + +Contact: Christian König + +Level: Starter + Outside DRM =========== diff --git a/Documentation/gpu/zynqmp.rst b/Documentation/gpu/zynqmp.rst new file mode 100644 index 000000000000..f57bfa0ad6ec --- /dev/null +++ b/Documentation/gpu/zynqmp.rst @@ -0,0 +1,149 @@ +.. SPDX-License-Identifier: GPL-2.0+ + +=============================================== +Xilinx ZynqMP Ultrascale+ DisplayPort Subsystem +=============================================== + +This subsystem handles DisplayPort video and audio output on the ZynqMP. It +supports in-memory framebuffers with the DisplayPort DMA controller +(xilinx-dpdma), as well as "live" video and audio from the programmable logic +(PL). This subsystem can perform several transformations, including color space +conversion, alpha blending, and audio mixing, although not all features are +currently supported. + +debugfs +------- + +To support debugging and compliance testing, several test modes can be enabled +though debugfs. The following files in /sys/kernel/debug/dri/X/DP-1/test/ +control the DisplayPort test modes: + +active: + Writing a 1 to this file will activate test mode, and writing a 0 will + deactivate test mode. Writing a 1 or 0 when the test mode is already + active/inactive will re-activate/re-deactivate test mode. When test + mode is inactive, changes made to other files will have no (immediate) + effect, although the settings will be saved for when test mode is + activated. When test mode is active, changes made to other files will + apply immediately. + +custom: + Custom test pattern value + +downspread: + Enable/disable clock downspreading (spread-spectrum clocking) by + writing 1/0 + +enhanced: + Enable/disable enhanced framing + +ignore_aux_errors: + Ignore AUX errors when set to 1. Writes to this file take effect + immediately (regardless of whether test mode is active) and affect all + AUX transfers. + +ignore_hpd: + Ignore hotplug events (such as cable removals or monitor link + retraining requests) when set to 1. Writes to this file take effect + immediately (regardless of whether test mode is active). + +laneX_preemphasis: + Preemphasis from 0 (lowest) to 2 (highest) for lane X + +laneX_swing: + Voltage swing from 0 (lowest) to 3 (highest) for lane X + +lanes: + Number of lanes to use (1, 2, or 4) + +pattern: + Test pattern. May be one of: + + video + Use regular video input + + symbol-error + Symbol error measurement pattern + + prbs7 + Output of the PRBS7 (x^7 + x^6 + 1) polynomial + + 80bit-custom + A custom 80-bit pattern + + cp2520 + HBR2 compliance eye pattern + + tps1 + Link training symbol pattern TPS1 (/D10.2/) + + tps2 + Link training symbol pattern TPS2 + + tps3 + Link training symbol pattern TPS3 (for HBR2) + +rate: + Rate in hertz. One of + + * 5400000000 (HBR2) + * 2700000000 (HBR) + * 1620000000 (RBR) + +You can dump the displayport test settings with the following command:: + + for prop in /sys/kernel/debug/dri/1/DP-1/test/*; do + printf '%-17s ' ${prop##*/} + if [ ${prop##*/} = custom ]; then + hexdump -C $prop | head -1 + else + cat $prop + fi + done + +The output could look something like:: + + active 1 + custom 00000000 00 00 00 00 00 00 00 00 00 00 |..........| + downspread 0 + enhanced 1 + ignore_aux_errors 1 + ignore_hpd 1 + lane0_preemphasis 0 + lane0_swing 3 + lane1_preemphasis 0 + lane1_swing 3 + lanes 2 + pattern prbs7 + rate 1620000000 + +The recommended test procedure is to connect the board to a monitor, +configure test mode, activate test mode, and then disconnect the cable +and connect it to your test equipment of choice. For example, one +sequence of commands could be:: + + echo 1 > /sys/kernel/debug/dri/1/DP-1/test/enhanced + echo tps1 > /sys/kernel/debug/dri/1/DP-1/test/pattern + echo 1620000000 > /sys/kernel/debug/dri/1/DP-1/test/rate + echo 1 > /sys/kernel/debug/dri/1/DP-1/test/ignore_aux_errors + echo 1 > /sys/kernel/debug/dri/1/DP-1/test/ignore_hpd + echo 1 > /sys/kernel/debug/dri/1/DP-1/test/active + +at which point the cable could be disconnected from the monitor. + +Internals +--------- + +.. kernel-doc:: drivers/gpu/drm/xlnx/zynqmp_disp.h + +.. kernel-doc:: drivers/gpu/drm/xlnx/zynqmp_dpsub.h + +.. kernel-doc:: drivers/gpu/drm/xlnx/zynqmp_kms.h + +.. kernel-doc:: drivers/gpu/drm/xlnx/zynqmp_disp.c + +.. kernel-doc:: drivers/gpu/drm/xlnx/zynqmp_dp.c + +.. kernel-doc:: drivers/gpu/drm/xlnx/zynqmp_dpsub.c + +.. kernel-doc:: drivers/gpu/drm/xlnx/zynqmp_kms.c |
