<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> <meta name="Generator" content="Microsoft Exchange Server">  <style></style> </head> <body> <font face="Calibri" size="2"><span style="font-size:11pt;"> <div>Yes, that's the case.</div> <div>It has RCC related silicon issues in gen12-lp. </div> <div>Followings are two consecutive GPU hangs we found in SG1 and DG1 linux which have no media compressible render target.</div> <div><font size="2"><span style="font-size:10pt;">1. <a href="https://hsdes.intel.com/appstore/article/"><font face="Helvetica Neue" color="#0056B3"><u>HSD-1508524297</u></font></a> [SG1][DG1] GPU hang in PIPECONTROL in running 120 ways of Android container with running pocket story HD apk. </span></font></div> <div><font face="Wingdings" size="2"><span style="font-size:11pt;">à</span></font> The solution is disable RHWO optimization in default. </div> <div>2. <a href="https://hsdes.intel.com/appstore/article/"><font color="#0563C1"><u>hsd-1508734716</u></font></a> [DG1][Linux] GPU hang in PIPECONTROL(IPEHR:0x7a000004) with (PSS, RCPFE, RCC, WMFE) not done in running Monkey test </div> <div><font face="Wingdings" size="2"><span style="font-size:11pt;">à</span></font> The solution is keeping RHWO optimization in when Render Target Resolve type is PARTIAL or FULL. The change will be in mesa code.</div> <div> </div> <div>SV and RCC design team have further study and give the root cause explain the bug-eco HSD of <a href="https://hsdes.intel.com/appstore/article/"><font color="#0563C1"><u>1508744258 - Hang due to deadlock created by RHWO scenario with RHWO optimization enabled</u></font></a>.</div> <div><font face="Times New Roman"> </font></div> <div>BTW, recently, Windows team found similar GPU hangs in custom’s TGL platform and need “disable RHWO” as the WA solution. So it’s a general issues in Gen12 (TGL and DG1). </div> <ul style="margin:0;padding-left:72pt;"> <font face="Times New Roman"> <li><a href="https://hsdes.intel.com/appstore/article/"><font face="Calibri" color="#0563C1"><u>14012336472 - [HP-TDC_IEC/HarryPotter]SIO1880260 Simple Solitaire UI show garbage when playing the game by finger.</u></font></a><font face="Calibri"> </font></li><li><a href="https://hsdes.intel.com/appstore/article/"><font face="Calibri" color="#0563C1"><u>18014955083 - [TGL] Sporadic pixel shader hang when alpha blending is enabled </u></font></a><font face="Calibri"> (SV sighting)</font></li></font> </ul> <div><font face="Times New Roman"> </font></div> <div>Thanks</div> <div>Han Zhen</div> <a name="_MailEndCompose"></a> <div> </div> <div>-----Original Message-----<br> From: De Marchi, Lucas <lucas.demarchi@intel.com> <br> Sent: Wednesday, March 3, 2021 9:07 AM<br> To: intel-gfx@lists.freedesktop.org<br> Cc: Han, Zhen <zhen.han@intel.com>; Liu, Jianjun <jianjun.liu@intel.com>; Liu, Chuansheng <chuansheng.liu@intel.com>; Sripada, Radhakrishna <radhakrishna.sripada@intel.com><br> Subject: [PATCH 4/4] drm/i915/dg1: WA GPU hang at RCC</div> <div><font face="Times New Roman"> </font></div> <div>From: Zhen Han <<a href="mailto:zhen.han@intel.com">zhen.han@intel.com</a>></div> <div> </div> <div>GPU hangs at RCC. According to Wa_14012131227 we shouldn't have a hang due to RHWO, but that is what we are observing, even without media compressible render target. Feedback from HW engineers is to leave RHWO disabled.</div> <div> </div> <div>Cc: Jianjun Liu <<a href="mailto:Jianjun.liu@intel.com">Jianjun.liu@intel.com</a>></div> <div>Cc: Chuansheng Liu <<a href="mailto:chuansheng.liu@intel.com">chuansheng.liu@intel.com</a>></div> <div>Cc: Radhakrishna Sripada <<a href="mailto:radhakrishna.sripada@intel.com">radhakrishna.sripada@intel.com</a>></div> <div>Signed-off-by: Zhen Han <<a href="mailto:zhen.han@intel.com">zhen.han@intel.com</a>></div> <div>Signed-off-by: Lucas De Marchi <<a href="mailto:lucas.demarchi@intel.com">lucas.demarchi@intel.com</a>></div> <div>---</div> <div> drivers/gpu/drm/i915/gt/intel_workarounds.c | 11 +++++++++++</div> <div> 1 file changed, 11 insertions(+)</div> <div> </div> <div>diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c</div> <div>index e678fa8d2ab9..5235fb70a69a 100644</div> <div>--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c</div> <div>+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c</div> <div>@@ -739,6 +739,17 @@ static void dg1_ctx_workarounds_init(struct intel_engine_cs *engine,</div> <div> FF_MODE2,</div> <div> FF_MODE2_GS_TIMER_MASK,</div> <div> FF_MODE2_GS_TIMER_224, 0);</div> <div>+</div> <div>+ /*</div> <div>+ * Wa_14012131227</div> <div>+ *</div> <div>+ * Although the WA is described as causing corruption when using media</div> <div>+ * compressible render target, leaving RHWO enabled is also causing</div> <div>+ * gpu hang when using multiple concurrent render and media workloads.</div> <div>+ * Disable it completely for now.</div> <div>+ */</div> <div>+ wa_masked_en(wal, GEN7_COMMON_SLICE_CHICKEN1,</div> <div>+ GEN9_RHWO_OPTIMIZATION_DISABLE);</div> <div> }</div> <div> </div> <div> static void</div> <div>--</div> <div>2.30.1</div> <div><font face="Times New Roman"> </font></div> <div><font face="Times New Roman"> </font></div> </span></font> </body> </html>