Yeah, the asic need to be POST in S4/resume and runtime resume.
Thanks
JimQu
________________________________________
发件人: Xu, Feifei
发送时间: 2018年12月10日 18:42
收件人: Qu, Jim
抄送: Quan, Evan; amd-gfx@xxxxxxxxxxxxxxxxxxxxx
主题: Re: 答复: [PATCH] drm/amdgpu:skip ASIC_INIT when posting card on vg20
Agree that if also need to skip ASIC_INIT in s3/s4 in driver, should do the similar change as you mentioned. I am not quite sure the s3/s4 situation for now. Though from test, it might be the same case.
Will get back from vbios and have corresponding change. Thanks.
发自我的 iPhone
> 在 2018年12月10日，下午6:28，Qu, Jim <Jim.Qu@xxxxxxx> 写道：
>
> Hi Feifei,
>
> When PSP perform ASIC_INIT during the whole boot up period?
>
> In S4, the asic will be reset, and it need be posted at the beginning of resume. So it is better move the logic into amdgpu_device_need_post() if ASIC_INIT is automatic performed by PSP during S4.
>
> Thanks
> JimQu
>
> ________________________________________
> 发件人: Xu, Feifei
> 发送时间: 2018年12月10日 18:09
> 收件人: Qu, Jim; Quan, Evan; amd-gfx@xxxxxxxxxxxxxxxxxxxxx
> 主题: RE: [PATCH] drm/amdgpu:skip ASIC_INIT when posting card on vg20
>
> In fact, in multigpu cases, the original logical in amdgpu_device_need_post()->amdgpu_atombios_scratch_need_asic_init() return TRUE.
> The logical is to: read ATOM_S7_ASIC_INIT_COMPLETE_MASK bit which is notified by BIOS to driver that if post is needed.
>
> After the ASIC_INIT table moved to psp, though post is needed (the ATOM_S7_ASIC_INIT_COMPLETE_MASK is unset), we still need to skip the post in driver.
>
> Regards,
> Feifei
>
> -----Original Message-----
> From: Qu, Jim <Jim.Qu@xxxxxxx>
> Sent: 2018年12月10日 17:42
> To: Quan, Evan <Evan.Quan@xxxxxxx>; Xu, Feifei <Feifei.Xu@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx
> Subject: 答复: [PATCH] drm/amdgpu:skip ASIC_INIT when posting card on vg20
>
> I think it is better move it into amdgpu_device_need_post() as a negative condition.
>
> Thanks
> JimQu
>
> ________________________________________
> 发件人: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> 代表 Quan, Evan <Evan.Quan@xxxxxxx>
> 发送时间: 2018年12月10日 14:33:58
> 收件人: Xu, Feifei; amd-gfx@xxxxxxxxxxxxxxxxxxxxx
> 抄送: Xu, Feifei
> 主题: RE: [PATCH] drm/amdgpu:skip ASIC_INIT when posting card on vg20
>
> Reviewed-by: Evan Quan <evan.quan@xxxxxxx>
>
>> -----Original Message-----
>> From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of
>> Feifei Xu
>> Sent: 2018年12月10日 14:17
>> To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
>> Cc: Xu, Feifei <Feifei.Xu@xxxxxxx>; Quan, Evan <Evan.Quan@xxxxxxx>
>> Subject: [PATCH] drm/amdgpu:skip ASIC_INIT when posting card on vg20
>>
>> On vega20, the job of executing the ASIC_INIT table when posting card
>> is moved to psp. Skip the atombios's ASIC_INIT on vega20 when posting card.
>>
>> Change-Id: Id1d3c0a0d19296d5ed804de7edf5b09b8d38c0a5
>> Signed-off-by: Feifei Xu <Feifei.Xu@xxxxxxx>
>> Tested-by: Candice Li <Candice.Li@xxxxxxx>
>> ---
>> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> index ef36cc595985..a375d2ac112f 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> @@ -2547,7 +2547,7 @@ int amdgpu_device_init(struct amdgpu_device
>> *adev,
>> amdgpu_device_detect_sriov_bios(adev);
>>
>> /* Post card if necessary */
>> - if (amdgpu_device_need_post(adev)) {
>> + if ((adev->asic_type != CHIP_VEGA20) &&
>> amdgpu_device_need_post(adev))
>> +{
>> if (!adev->bios) {
>> dev_err(adev->dev, "no vBIOS found\n");
>> r = -EINVAL;
>> --
>> 2.17.1
>>
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