<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <style type="text/css" style="display:none;"></style> </head> <body dir="ltr"> <div id="divtagdefaultwrapper" style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif;" dir="ltr"> Some of them are part of AON tiles but are unstable during PM switches. That's why the debugfs mmio entry supports a PM lock. So they might be readable while powered off but unstable if the firmware is in the middle of a PM switch. Tom <div style="color: rgb(0, 0, 0);"> <div> <hr tabindex="-1" style="display:inline-block; width:98%"> <div id="x_divRplyFwdMsg" dir="ltr">From: amd-gfx <amd-gfx-bounces@lists.freedesktop.org> on behalf of Deucher, Alexander <Alexander.Deucher@amd.com> Sent: Thursday, January 5, 2017 10:40 To: Huang, Ray; amd-gfx@lists.freedesktop.org Cc: Huang, Ray; Zhang, Hawking; Zhu, Rex; Fu, Ping; Mao, David Subject: RE: [PART1 PATCH 0/8] Introduce a method to get clock gating status dynamically <div> </div> </div> </div> <div class="PlainText">> -----Original Message----- > From: Huang Rui [<a href="mailto:ray.huang@amd.com">mailto:ray.huang@amd.com</a>] > Sent: Thursday, January 05, 2017 8:50 AM > To: Deucher, Alexander; amd-gfx@lists.freedesktop.org > Cc: Zhu, Rex; Mao, David; Fu, Ping; Zhang, Hawking; Huang, Ray > Subject: [PART1 PATCH 0/8] Introduce a method to get clock gating status > dynamically > > This series patches implement to get the clock gating status > dynamically into debugfs. User will enter profiling mode to runtime > disable clockgating, so it needs an interface to expose clock gating > states. Part 1 works for VI, I will implement it on CI/SI in following > days. Patches 1-6: Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Patches 7, 8: I'm not sure if the UVD and VCE status registers are available if the blocks are powergated. Reading them back while powergated can cause a hang. Might want to check the PG sw state before reading back the registers. Alex > > Here is the example on Fiji: > > root@jenkins-All-Series:/home/jenkins# cat > /sys/kernel/debug/dri/64/amdgpu_pm_info > Clock Gating Flags Mask: 0x3dfff > Medium Grain Clock Gating: On > Medium Grain memory Light Sleep: On > Coarse Grain Clock Gating: On > Coarse Grain memory Light Sleep: On > Coarse Grain Tree Shader: On > Coarse Grain Tree Shader Light Sleep: On > Command Processor Light Sleep: On > Run List Controller Light Sleep: On > Memory Controller Light Sleep: On > Memory Controller Medium Grain Clock Gating: On > System Direct Memory Access Light Sleep: On > System Direct Memory Access Medium Grain Clock Gating: On > Bus Interface Light Sleep: On > Universal Video Decoder Medium Grain Clock Gating: Off > Video Coding Engine Medium Grain Clock Gating: On > Host Data Path Light Sleep: On > Host Data Path Medium Grain Clock Gating: On > Rom Medium Grain Clock Gating: On > ... > > Thanks, > Rui > > Huang Rui (8): > drm/amdgpu: introduce an interface to get clock gating status > dynamically > drm/amdgpu: add parse clock gating state > drm/amdgpu: add clockgating_state method for gfx v8 > drm/amdgpu: add clockgating_state method for gmc v8 > drm/amdgpu: add clockgating_state method for sdma v3 > drm/amdgpu: add clockgating_state method for vi common > drm/amdgpu: add clockgating_state method for uvd v5&v6 > drm/amdgpu: add clockgating_state method for vce v3 > > drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 + > drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 12 ++++ > drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 99 > ++++++++++++++++++++++++++++++ > drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 40 ++++++++++++ > drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 16 +++++ > drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c | 17 +++++ > drivers/gpu/drm/amd/amdgpu/uvd_v5_0.c | 12 ++++ > drivers/gpu/drm/amd/amdgpu/uvd_v6_0.c | 12 ++++ > drivers/gpu/drm/amd/amdgpu/vce_v3_0.c | 18 ++++++ > drivers/gpu/drm/amd/amdgpu/vi.c | 27 ++++++++ > drivers/gpu/drm/amd/include/amd_shared.h | 2 + > 11 files changed, 256 insertions(+) > > -- > 2.7.4 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org <a href="https://lists.freedesktop.org/mailman/listinfo/amd-gfx">https://lists.freedesktop.org/mailman/listinfo/amd-gfx</a> </div> </div> </div> </body> </html>