[PATCH 4/4] drm/amd/pp: Implement set_power_profile_mode on smu7
Zhu, Rex
Rex.Zhu at amd.com
Thu Jan 25 02:28:02 UTC 2018
>But then you're changing the semantics of how pp_dpm_sclk/mclk wok
>together with pp_dpm_force_performance_level.
Rex:The two sysfs are all for clock range setting.
pp_dpm_sclk/mclk/pcie can set sclk/mclk/pcie range separately.
and pp_dpm_force_performance_level, we can support low/high/umd-pstate that set all the clocks range.
(manual state, driver do nothing except set the flag)
No matter what state user enter in, driver can support to continue to change the clock range through pp_dpm_sclk/mclk/pcie.
so in fact, don't need manual state for sepalately set the clock range.
>Sysfs interfaces should be maintained stable. I'm OK with breaking the
>old power profile stuff, because it only affects KFD which isn't
>upstream yet.
Rex: As the old power profile interface can't support Vega.
so add new interface and we are try to support old asics with new sysfs.
>But the old pp_dpm_sclk/mclk and
>pp_dpm_force_performance_level affect code that's currently upstream and
>used by existing tools.
Rex: Yes, we are trying to maintain the sysfs stable.
if we change the old sysfs code, we will try to not affect existing tools.
Best Regards
Rex
________________________________
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of Felix Kuehling <felix.kuehling at amd.com>
Sent: Thursday, January 25, 2018 7:12 AM
To: Zhu, Rex; Huang, JinHuiEric; amd-gfx at lists.freedesktop.org
Subject: Re: [PATCH 4/4] drm/amd/pp: Implement set_power_profile_mode on smu7
On 2018-01-24 06:05 PM, Zhu, Rex wrote:
> Hi Felix,
>
> The logic of gfx/computer profile setting works in such way as you
> said,need under “auto” state.
> But in new sysfs of power profile setting, we do not check the performance
> Level.
>
> And The “manual” state is a confusing flag，when user set manual
> state，and then change the clk range through pp-dpm-sclk/mclk，the dpm
> still works automatically in new clock range, I think we can remove
> this flag.
But then you're changing the semantics of how pp_dpm_sclk/mclk wok
together with pp_dpm_force_performance_level.
Sysfs interfaces should be maintained stable. I'm OK with breaking the
old power profile stuff, because it only affects KFD which isn't
upstream yet. But the old pp_dpm_sclk/mclk and
pp_dpm_force_performance_level affect code that's currently upstream and
used by existing tools.
>
> So My idea is
> in the sysfs of pp dpm sclk/mclk, user can set clock range.
> In the sysfs of power profile state, user can configure the parameters
> smu/driver exposed. They are independent.
I disagree. the clock range is not independent of the profile. Profiles
correspond to use cases. Different use cases have different clock
requirements. For compute we want the clocks to be high. For video you
may have requirements for minimum mclks to ensure smooth playback. For
power saving you may want to limit maximum clocks, etc. So setting the
clock range independent of the profile in "auto" mode does not make
sense to me.
Regards,
Felix
>
>
>
>
>
>
> Best Regards
> Rex
> ------------------------------------------------------------------------
> *From:* Kuehling, Felix
> *Sent:* Thursday, January 25, 2018 5:41:43 AM
> *To:* Zhu, Rex; Huang, JinHuiEric; amd-gfx at lists.freedesktop.org
> *Subject:* Re: [PATCH 4/4] drm/amd/pp: Implement
> set_power_profile_mode on smu7
>
> Hi Rex,
>
> As I understand it (the way power profiles currently work),
> pp_dpm_sclk/mclk only apply if pp_dpm_force_performance_level is set to
> "manual". Power profiles and automatic switching between profiles only
> happens when pp_dpm_force_performance_level is set to "auto".
>
> This means pp_dpm_sclk/mclk don't apply when profiles are in effect.
> Also, there would be no way to set different minimum clocks for
> different profiles.
>
> I think minimum clocks should be part of the profiles.
>
> Regards,
> Felix
>
>
> On 2018-01-24 03:13 PM, Zhu, Rex wrote:
> > Hi Eric,
> >
> > We have sysfs pp-dpm-sclk/mclk to set min dpm level
> >
> > Best Regards
> > Rex
> > ------------------------------------------------------------------------
> > *From:* amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of
> > Eric Huang <jinhuieric.huang at amd.com>
> > *Sent:* Thursday, January 25, 2018 12:04:55 AM
> > *To:* amd-gfx at lists.freedesktop.org
> > *Subject:* Re: [PATCH 4/4] drm/amd/pp: Implement
> > set_power_profile_mode on smu7
> >
> > We have min_sclk and min_mclk in previous power profile parameters for
> > VI, which are similar with min_active_level for Vega10. How to implement
> > these parameters?
> >
> > Regards,
> > Eric
> >
> > On 2018-01-24 04:37 AM, Rex Zhu wrote:
> > > User can set smu7 profile pamameters through sysfs
> > >
> > > echo "0/1/2/3/4">pp_power_profile_mode
> > > to select 3D_FULL_SCREEN/POWER_SAVING/VIDEO/VR/COMPUTE
> > > mode.
> > > echo "5 * * * * * * * *">pp_power_profile_mode
> > > to config custom mode.
> > > "5 * * * * * * * *" mean "CUSTOM enable_sclk SCLK_UP_HYST
> > > SCLK_DOWN_HYST SCLK_ACTIVE_LEVEL enable_mclk MCLK_UP_HYST
> > > MCLK_DOWN_HYST MCLK_ACTIVE_LEVEL"
> > >
> > > Change-Id: Ic6d6f37363bc81ab17051285f6ace847edf725de
> > > Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
> > > ---
> > > drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 49
> > +++++++++++++++++++++++-
> > > 1 file changed, 48 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
> > b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
> > > index 9f6afd5..13db75c 100644
> > > --- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
> > > +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
> > > @@ -5036,7 +5036,54 @@ static int smu7_get_power_profile_mode(struct
> > pp_hwmgr *hwmgr, char *buf)
> > >
> > > static int smu7_set_power_profile_mode(struct pp_hwmgr *hwmgr,
> > long *input, uint32_t size)
> > > {
> > > - /* To Do */
> > > + struct smu7_hwmgr *data = (struct smu7_hwmgr *)(hwmgr->backend);
> > > + struct profile_mode_setting tmp;
> > > +
> > > + hwmgr->power_profile_mode = input[size];
> > > +
> > > + switch (hwmgr->power_profile_mode) {
> > > + case PP_SMC_POWER_PROFILE_CUSTOM:
> > > + if (size < 8)
> > > + return -EINVAL;
> > > +
> > > + data->custom_profile_setting.bupdate_sclk = input[0];
> > > + data->custom_profile_setting.sclk_up_hyst = input[1];
> > > + data->custom_profile_setting.sclk_down_hyst = input[2];
> > > + data->custom_profile_setting.sclk_activity = input[3];
> > > + data->custom_profile_setting.bupdate_mclk = input[4];
> > > + data->custom_profile_setting.mclk_up_hyst = input[5];
> > > + data->custom_profile_setting.mclk_down_hyst = input[6];
> > > + data->custom_profile_setting.mclk_activity = input[7];
> > > + if (!smum_update_dpm_settings(hwmgr,
> > &data->custom_profile_setting))
> > > + memcpy(&data->current_profile_setting,
> > &data->custom_profile_setting, sizeof(struct profile_mode_setting));
> > > + break;
> > > + case PP_SMC_POWER_PROFILE_FULLSCREEN3D:
> > > + case PP_SMC_POWER_PROFILE_POWERSAVING:
> > > + case PP_SMC_POWER_PROFILE_VIDEO:
> > > + case PP_SMC_POWER_PROFILE_VR:
> > > + case PP_SMC_POWER_PROFILE_COMPUTE:
> > > + memcpy(&tmp,
> > &smu7_profiling[hwmgr->power_profile_mode], sizeof(struct
> > profile_mode_setting));
> > > + if (!smum_update_dpm_settings(hwmgr, &tmp)) {
> > > + if (tmp.bupdate_sclk) {
> > > +
> > data->current_profile_setting.bupdate_sclk = tmp.bupdate_sclk;
> > > +
> > data->current_profile_setting.sclk_up_hyst = tmp.sclk_up_hyst;
> > > +
> > data->current_profile_setting.sclk_down_hyst = tmp.sclk_down_hyst;
> > > +
> > data->current_profile_setting.sclk_activity = tmp.sclk_activity;
> > > + }
> > > + if (tmp.bupdate_mclk) {
> > > +
> > data->current_profile_setting.bupdate_mclk = tmp.bupdate_mclk;
> > > +
> > data->current_profile_setting.mclk_up_hyst = tmp.mclk_up_hyst;
> > > +
> > data->current_profile_setting.mclk_down_hyst = tmp.mclk_down_hyst;
> > > +
> > data->current_profile_setting.mclk_activity = tmp.mclk_activity;
> > > + }
> > > + }
> > > + break;
> > > + case PP_SMC_POWER_PROFILE_AUTO: /* TO DO auto wattman feature
> > not implement */
> > > + return 0;
> > > + default:
> > > + return -EINVAL;
> > > + }
> > > +
> > > return 0;
> > > }
> > >
> >
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