<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 14 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:"Segoe UI";
panose-1:2 11 5 2 4 2 4 2 2 3;}
@font-face
{font-family:"Segoe UI Light";
panose-1:2 11 5 2 4 2 4 2 2 3;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Worth a shot, but I doubt it. Wptr polling is only enabled if explicitly requested. I'm not sure if CP PG will work without doorbells since the doorbells
are handled by the BIF and forwarded to the CP which should wake it if it's gated. Wptr polling may require CP PG be disabled or prevent it from kicking in. Probably want to ask the CP team.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Alex<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt">
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> amd-gfx [mailto:amd-gfx-bounces@lists.freedesktop.org]
<b>On Behalf Of </b>StDenis, Tom<br>
<b>Sent:</b> Wednesday, September 28, 2016 9:41 AM<br>
<b>To:</b> Liu, Monk; amd-gfx@lists.freedesktop.org<br>
<b>Cc:</b> Min, Frank<br>
<b>Subject:</b> Re: [PATCH 8/9] drm/amdgpu:wptr poll address of gfx8 is needed<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div id="divtagdefaultwrapper">
<p><span style="font-family:"Calibri","sans-serif";color:black">Hmm, I wonder if this fix CP power gating issues ... on Carrizo/Stoney...<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<div>
<div>
<div class="MsoNormal" align="center" style="text-align:center"><span style="font-family:"Calibri","sans-serif";color:black">
<hr size="2" width="98%" align="center">
</span></div>
<div id="x_divRplyFwdMsg">
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"> amd-gfx <<a href="mailto:amd-gfx-bounces@lists.freedesktop.org">amd-gfx-bounces@lists.freedesktop.org</a>>
on behalf of Monk Liu <<a href="mailto:Monk.Liu@amd.com">Monk.Liu@amd.com</a>><br>
<b>Sent:</b> Wednesday, September 28, 2016 04:36<br>
<b>To:</b> <a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a><br>
<b>Cc:</b> Min, Frank<br>
<b>Subject:</b> [PATCH 8/9] drm/amdgpu:wptr poll address of gfx8 is needed</span><span style="font-family:"Calibri","sans-serif";color:black">
<o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif";color:black"> <o:p></o:p></span></p>
</div>
</div>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:black">From: Frank Min <<a href="mailto:Frank.Min@amd.com">Frank.Min@amd.com</a>><br>
<br>
for GFX8, gfx ring's wptr_addr is needed by SRIOV & CP for polling.<br>
<br>
Change-Id: I14477577ef50d1ac90ccc32d41819276811732b7<br>
Signed-off-by: Frank Min <<a href="mailto:Frank.Min@amd.com">Frank.Min@amd.com</a>><br>
---<br>
drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 5 ++++-<br>
1 file changed, 4 insertions(+), 1 deletion(-)<br>
<br>
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c<br>
index 097108a..98ef1fe 100644<br>
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c<br>
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c<br>
@@ -4338,7 +4338,7 @@ static int gfx_v8_0_cp_gfx_resume(struct amdgpu_device *adev)<br>
struct amdgpu_ring *ring;<br>
u32 tmp;<br>
u32 rb_bufsz;<br>
- u64 rb_addr, rptr_addr;<br>
+ u64 rb_addr, rptr_addr, wptr_gpu_addr;<br>
int r;<br>
<br>
/* Set the write pointer delay */<br>
@@ -4369,6 +4369,9 @@ static int gfx_v8_0_cp_gfx_resume(struct amdgpu_device *adev)<br>
WREG32(mmCP_RB0_RPTR_ADDR, lower_32_bits(rptr_addr));<br>
WREG32(mmCP_RB0_RPTR_ADDR_HI, upper_32_bits(rptr_addr) & 0xFF);<br>
<br>
+ wptr_gpu_addr = adev->wb.gpu_addr + (ring->wptr_offs * 4);<br>
+ WREG32(mmCP_RB_WPTR_POLL_ADDR_LO, lower_32_bits(wptr_gpu_addr));<br>
+ WREG32(mmCP_RB_WPTR_POLL_ADDR_HI, upper_32_bits(wptr_gpu_addr));<br>
mdelay(1);<br>
WREG32(mmCP_RB0_CNTL, tmp);<br>
<br>
-- <br>
1.9.1<br>
<br>
_______________________________________________<br>
amd-gfx mailing list<br>
<a href="mailto:amd-gfx@lists.freedesktop.org">amd-gfx@lists.freedesktop.org</a><br>
<a href="https://lists.freedesktop.org/mailman/listinfo/amd-gfx" id="LPlnk21963">https://lists.freedesktop.org/mailman/listinfo/amd-gfx</a>
<o:p></o:p></span></p>
<div style="margin-bottom:15.0pt;overflow:auto" id="LPBorder_GT_14750700535950.9733653182953386">
<table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" width="90%" style="width:90.0%;background:white;border-top:dotted #C8C8C8 1.0pt;border-left:none;border-bottom:dotted #C8C8C8 1.0pt;border-right:none">
<tbody>
<tr>
<td valign="top" style="border:none;padding:0in 0in 0in 0in">
<div id="LPTitle_14750700535940.16791780469974915">
<p class="MsoNormal" style="margin-top:15.0pt;mso-line-height-alt:15.75pt"><span style="font-size:16.0pt;font-family:"Segoe UI Light","sans-serif";color:#3B5777"><a href="https://lists.freedesktop.org/mailman/listinfo/amd-gfx" target="_blank"><span style="text-decoration:none">amd-gfx
Info Page - lists.freedesktop.org</span></a><o:p></o:p></span></p>
</div>
<div style="margin-top:7.5pt;margin-bottom:12.0pt" id="LPMetadata_14750700535950.5392573984284703">
<p class="MsoNormal" style="margin-top:15.0pt;line-height:10.5pt"><span style="font-size:10.5pt;font-family:"Segoe UI","sans-serif";color:#666666">lists.freedesktop.org<o:p></o:p></span></p>
</div>
<div id="LPDescription_14750700535950.36316319059213775">
<p class="MsoNormal" style="margin-top:15.0pt;line-height:15.0pt"><span style="font-size:10.5pt;font-family:"Segoe UI","sans-serif";color:#666666">To see the collection of prior postings to the list, visit the amd-gfx Archives. Using amd-gfx: To post a message
to all the list members, send email ...<o:p></o:p></span></p>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
</div>
</div>
</div>
</div>
</div>
</body>
</html>