Correct my typo
This is in high risk to break gpu resume and reset just because you clear the ATOM_S7_ASIC_INIT_COMPLETE_MASK field in scratch register 7. And the atom_bios init will be skipped.
Regards,
Hawking
-----Original Message-----
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Zhang, Hawking
Sent: 2019年12月6日 16:07
To: Quan, Evan <Evan.Quan@xxxxxxx>; Yuan, Xiaojie <Xiaojie.Yuan@xxxxxxx>; Luo, Zhigang <Zhigang.Luo@xxxxxxx>
Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Subject: RE: [PATCH] drm/amd/powerplay: clear VBIOS scratchs on baco exit
This is in high risk to break secondary gpu resume and reset just because you clear the ATOM_S7_ASIC_INIT_COMPLETE_MASK field in scratch register 7. And the atom_bios init will be skipped.
We shall understand any libgv fixes very well before "copy" it to bare-metal. Libgv don't need to take care S3.
Regards,
Hawking
-----Original Message-----
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Quan, Evan
Sent: 2019年12月6日 13:27
To: Yuan, Xiaojie <Xiaojie.Yuan@xxxxxxx>; Luo, Zhigang <Zhigang.Luo@xxxxxxx>
Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Subject: RE: [PATCH] drm/amd/powerplay: clear VBIOS scratchs on baco exit
Hi Xiaojie,
This was reported by Zhigang team. Under their special use case, scratch register 7 has be to 0 to perform asic init(@Luo, Zhigang right?).
And considering old asics(vega20/10) also applied this change.
So, I think it's reasonable(and recommend by SMU fw team) to apply this on the new ASICs also.
Regards,
Evan
> -----Original Message-----
> From: Yuan, Xiaojie <Xiaojie.Yuan@xxxxxxx>
> Sent: Friday, December 6, 2019 12:20 PM
> To: Quan, Evan <Evan.Quan@xxxxxxx>
> Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx; Luo, Zhigang <Zhigang.Luo@xxxxxxx>
> Subject: Re: [PATCH] drm/amd/powerplay: clear VBIOS scratchs on baco
> exit
>
> Hi Evan,
>
> Just out of curiosity, may I know what issue are you trying to fix?
> I used to see vbios post failure (hangs in atombios init table) after
> baco exit occasionally on navi.
>
> BR,
> Xiaojie
>
> > On Dec 6, 2019, at 11:37 AM, Evan Quan <evan.quan@xxxxxxx> wrote:
> >
> > This is needed for coming asic init on performing gpu reset.
> >
> > Change-Id: If3671a24d239e3d288665fadaa2c40c87d5da40b
> > Signed-off-by: Evan Quan <evan.quan@xxxxxxx>
> > ---
> > drivers/gpu/drm/amd/powerplay/smu_v11_0.c | 6 ++++++
> > 1 file changed, 6 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
> b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
> > index 39ec06aee809..ab809df7bc35 100644
> > --- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
> > +++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
> > @@ -1659,6 +1659,12 @@ int smu_v11_0_baco_set_state(struct
> smu_context *smu, enum smu_baco_state state)
> > }
> > } else {
> > ret = smu_send_smc_msg(smu, SMU_MSG_ExitBaco);
> > + if (ret)
> > + goto out;
> > +
> > + WREG32_SOC15(NBIO, 0, mmBIOS_SCRATCH_6, 0);
> > + WREG32_SOC15(NBIO, 0, mmBIOS_SCRATCH_7, 0);
> > +
> > bif_doorbell_intr_cntl = REG_SET_FIELD(bif_doorbell_intr_cntl,
> > BIF_DOORBELL_INT_CNTL,
> > DOORBELL_INTERRUPT_DISABLE, 0);
> > --
> > 2.24.0
> >
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