[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

            Bug ID: 98505
           Summary: [Topaz] Regression introduces in 4.8-rc3
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: nayan26deshmukh@gmail.com

Everything was working fine with v4.8-rc2, but with v4.8-rc3 the module loads
successfully but when I try to use it via vdpau it results in following
errors:-

[  101.129388] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 1
test failed (scratch(0xC040)=0xCAFEDEAD)
[  101.340282] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 2
test failed (scratch(0xC040)=0xCAFEDEAD)
[  101.551074] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 3
test failed (scratch(0xC040)=0xCAFEDEAD)
[  101.761909] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 4
test failed (scratch(0xC040)=0xCAFEDEAD)
[  101.972856] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 5
test failed (scratch(0xC040)=0xCAFEDEAD)
[  102.183708] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 6
test failed (scratch(0xC040)=0xCAFEDEAD)
[  102.394620] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 7
test failed (scratch(0xC040)=0xCAFEDEAD)
[  102.605321] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 8
test failed (scratch(0xC040)=0xCAFEDEAD)
[  102.709055] [drm:sdma_v2_4_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 9
test failed (0xCAFEDEAD)
[  102.709065] [drm:amdgpu_resume [amdgpu]] *ERROR* resume of IP block
<sdma_v2_4> failed -22
[  102.709074] [drm:amdgpu_resume_kms [amdgpu]] *ERROR* amdgpu_resume failed
(-22).
[  126.965536] [TTM] Buffer eviction failed

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #1 from Nayan Deshmukh <nayan26deshmukh@gmail.com> ---
After the git bisect, the following commit was leading to error:- 

commit c39b487f195b93235ee76384427467786f7bf29f
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Tue Aug 9 00:20:28 2016 -0400

    Revert "drm/amdgpu: work around lack of upstream ACPI support for D3cold"

    This reverts commit c63695cc5e5f685e924e25a8f9555f6e846f1fc6.

    Now that d3cold support is upstream, there is no more need for this
    workaround.

    bug:
    https://bugs.freedesktop.org/show_bug.cgi?id=97248

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #2 from Alex Deucher <alexdeucher@gmail.com> ---
Possibly the same root cause as bug 98398.

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #3 from Nayan Deshmukh <nayan26deshmukh@gmail.com> ---
I had a look at Peter Wu's patch that landed today on drm-fixes. Do we also
need to have a patch like that which maybe tweaks amdgpu_atpx_handler to make
it work?

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

Peter Wu <peter@lekensteyn.nl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |peter@lekensteyn.nl
             Status|NEW                         |NEEDINFO

--- Comment #4 from Peter Wu <peter@lekensteyn.nl> ---
@Nayan To see whether the problem is similar as nouveau, I need more
information about your machine. Could you provide your acpidump?

You can also submit a whole tarball as described at
https://bugs.launchpad.net/lpbugreporter/+bug/752542, that would include the
acpidump among other things.

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #5 from Nayan Deshmukh <nayan26deshmukh@gmail.com> ---
Created attachment 127673
  --> https://bugs.freedesktop.org/attachment.cgi?id=127673&action=edit
Dell_Inc.-Inspiron_5548.tar.gz

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

Nayan Deshmukh <nayan26deshmukh@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |NEW

--- Comment #6 from Nayan Deshmukh <nayan26deshmukh@gmail.com> ---
After I run any program which uses the AMD gpu the system will hang if I
perform any heavy task like starting chrome for example. 

Please let me know if you need any more info or need to test some patches.

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #7 from Peter Wu <peter@lekensteyn.nl> ---
Created attachment 127678
  --> https://bugs.freedesktop.org/attachment.cgi?id=127678&action=edit
amdgpu patch that checks whether the new interface can be used for PM

PCIe port PM is not enabled because this BIOS is pre-2015: 12/04/2014
The BIOS seems to be able to report support for lots of things (can you post a
fuller dmesg that include the supported functions?):

    Scope (\_SB.PCI0.GFX0) {
        Method (ATPX, 2, Serialized) {
            // ...
            If (Arg0 == One) {
                Name (TMP2, Buffer (0x0100) { 0x00 })
                CreateWordField (TMP2, Zero, F1SS)
                CreateDWordField (TMP2, 0x02, F1VM)
                CreateDWordField (TMP2, 0x06, F1FG)
                F1SS = 0x0A
                F1VM = 0x7FC0
                If ((\_SB.PCI0.RP05.PXSX.SGMD & 0x0F) == 0x02) {
                    // ...
                    If (\_SB.PCI0.RP05.PXSX.PXDY == One) {
                        F1FG |= 0x80 /* ATPX_DYNAMIC_PX_SUPPORTED */
                        F1VM |= 0x80
                    }
                    //
                    If (\_SB.PCI0.RP05.PXSX.FDPD == One) {
                        F1FG |= 0x0400 /* ATPX_DYNAMIC_DGPU_POWER_OFF_SUPPORTED
*/
                        F1VM |= 0x0400
                        If (OSYS >= 0x07DC) {
                            F1FG |= 0x0800 /* ATPX_DGPU_REQ_POWER_FOR_DISPLAYS
*/
                            F1VM |= 0x0800
                        }
                    }
                    // ...
                    If (OSYS >= 0x07DD) {
                        F1FG |= 0x4000 /* ATPX_MS_HYBRID_GFX_SUPPORTED */ 
                        F1VM |= 0x4000
                    }

amdgpu (and radeon) needs to check whether PCIe port PM is really supported.
Possible patch is attached (there should probably be a pci_d3cold_disable call
somewhere, see commit 279cf3f23870f7eb8ca071115e06d3d5ca0a2b9e for nouveau).

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #8 from Nayan Deshmukh <nayan26deshmukh@gmail.com> ---
Comment on attachment 127678
  --> https://bugs.freedesktop.org/attachment.cgi?id=127678
amdgpu patch that checks whether the new interface can be used for PM

Review of attachment 127678:
-----------------------------------------------------------------

::: drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c
@@ +206,5 @@
>  	atpx->is_hybrid = false;
>  	if (valid_bits & ATPX_MS_HYBRID_GFX_SUPPORTED) {
>  		printk("ATPX Hybrid Graphics\n");
> +		/* Disable legacy PM methods only when pcie port PM is usable. */
> +		atpx->functions.power_cntl = !amdgpu_atpx_priv->bridge_pm_usable;

With this replaced by 
atpx->functions.power_cntl = !amdgpu_atpx_priv.bridge_pm_usable;

The patch fixes the issue. :)

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #9 from Nayan Deshmukh <nayan26deshmukh@gmail.com> ---
I will also try to the master branch of kernel to see if bug 98357 is gone

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #10 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to Peter Wu from comment #7)
> Created attachment 127678 [details] [review]
> amdgpu patch that checks whether the new interface can be used for PM
> 
> PCIe port PM is not enabled because this BIOS is pre-2015: 12/04/2014
> The BIOS seems to be able to report support for lots of things (can you post
> a fuller dmesg that include the supported functions?):

Can we bump the bios white list to 2014?  Windows enabled Hybrid graphics on
windows 8.x as well as 10, and a number of preliminary win10 systems have 2014
bios versions.  I'd prefer that to doing all of these hacks in the drivers.

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #11 from Peter Wu <peter@lekensteyn.nl> ---
(In reply to Alex Deucher from comment #10)
> (In reply to Peter Wu from comment #7)
> > Created attachment 127678 [details] [review] [review]
> > amdgpu patch that checks whether the new interface can be used for PM
> > 
> > PCIe port PM is not enabled because this BIOS is pre-2015: 12/04/2014
> > The BIOS seems to be able to report support for lots of things (can you post
> > a fuller dmesg that include the supported functions?):
> 
> Can we bump the bios white list to 2014?  Windows enabled Hybrid graphics on
> windows 8.x as well as 10, and a number of preliminary win10 systems have
> 2014 bios versions. I'd prefer that to doing all of these hacks in the drivers.

Lowering the minumum from 2015 to 2014 should work for nouveau:
https://lists.freedesktop.org/archives/nouveau/2016-July/025619.html

You can try to ask Mika, see v4.7-rc2-3-g9d26d3a. Maybe the presence of a power
resource (_PR3 or flags.power_resources) can be used as a hint whether to
enable port PM.

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #12 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to Peter Wu from comment #11)
> (In reply to Alex Deucher from comment #10)
> > (In reply to Peter Wu from comment #7)
> > > Created attachment 127678 [details] [review] [review] [review]
> > > amdgpu patch that checks whether the new interface can be used for PM
> > > 
> > > PCIe port PM is not enabled because this BIOS is pre-2015: 12/04/2014
> > > The BIOS seems to be able to report support for lots of things (can you post
> > > a fuller dmesg that include the supported functions?):
> > 
> > Can we bump the bios white list to 2014?  Windows enabled Hybrid graphics on
> > windows 8.x as well as 10, and a number of preliminary win10 systems have
> > 2014 bios versions. I'd prefer that to doing all of these hacks in the drivers.
> 
> Lowering the minumum from 2015 to 2014 should work for nouveau:
> https://lists.freedesktop.org/archives/nouveau/2016-July/025619.html
> 

For further clarify on your research, the current hybrid graphics spec requires
no connectors on the dGPU and hence no audio devices.  For devices with
connectors on the dGPU, they should use the older vendor specific methods and
PR# should not be exposed.

> You can try to ask Mika, see v4.7-rc2-3-g9d26d3a. Maybe the presence of a
> power resource (_PR3 or flags.power_resources) can be used as a hint whether
> to enable port PM.

Yes, the presence of _PR3 would be a great way to determine when to enable it.

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #13 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to Alex Deucher from comment #12)
> methods and PR# should not be exposed.

PR3

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #14 from Peter Wu <peter@lekensteyn.nl> ---
(In reply to Alex Deucher from comment #12)
[..]
> > Lowering the minumum from 2015 to 2014 should work for nouveau:
> > https://lists.freedesktop.org/archives/nouveau/2016-July/025619.html
> > 
> 
> For further clarify on your research, the current hybrid graphics spec
> requires no connectors on the dGPU and hence no audio devices.  For devices
> with connectors on the dGPU, they should use the older vendor specific
> methods and PR3 should not be exposed.

The list was mentioned because of the BIOS dates and whether _PR3 is used.

The Windows 8 requirements state that the discrete GPU is render-only[0], but
the Win10 reqs have no such requirement[1]. (Are these the same specs you had
in mind? If not, could you share the right one?) On my new hybrid nvidia
laptop, there are actually DP/HDMI ports to the dGPU (HDMI with audio).

 [0]:
https://msdn.microsoft.com/en-us/library/windows/hardware/dn265510(v=vs.85).aspx
 [1]:
https://msdn.microsoft.com/en-us/windows/hardware/commercialize/design/compatibility/systems#systemfundamentalsgraphicshybridgraphicsmultigpu

> > You can try to ask Mika, see v4.7-rc2-3-g9d26d3a. Maybe the presence of a
> > power resource (_PR3 or flags.power_resources) can be used as a hint whether
> > to enable port PM.
> 
> Yes, the presence of _PR3 would be a great way to determine when to enable
> it.

Have you been working on this or should I have a look?

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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--- Comment #15 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to Peter Wu from comment #14)
> (In reply to Alex Deucher from comment #12)
> [..]
> > > Lowering the minumum from 2015 to 2014 should work for nouveau:
> > > https://lists.freedesktop.org/archives/nouveau/2016-July/025619.html
> > > 
> > 
> > For further clarify on your research, the current hybrid graphics spec
> > requires no connectors on the dGPU and hence no audio devices.  For devices
> > with connectors on the dGPU, they should use the older vendor specific
> > methods and PR3 should not be exposed.
> 
> The list was mentioned because of the BIOS dates and whether _PR3 is used.
> 
> The Windows 8 requirements state that the discrete GPU is render-only[0],
> but the Win10 reqs have no such requirement[1]. (Are these the same specs
> you had in mind? If not, could you share the right one?) On my new hybrid
> nvidia laptop, there are actually DP/HDMI ports to the dGPU (HDMI with
> audio).
> 

I had access to the PR3 spec internally.  I'm not sure if it's available
publicly or not.  Support for displays was not included in the information I
saw or from talking with our internal hybrid graphics architects.  It's
possible the spec has been updated since I last talked to them earlier this
year.  I can double check.

Does your new laptop use PR3 or the older nvidia proprietary ACPI method?

>  [0]:
> https://msdn.microsoft.com/en-us/library/windows/hardware/dn265510(v=vs.85).
> aspx
>  [1]:
> https://msdn.microsoft.com/en-us/windows/hardware/commercialize/design/
> compatibility/systems#systemfundamentalsgraphicshybridgraphicsmultigpu
> 
> > > You can try to ask Mika, see v4.7-rc2-3-g9d26d3a. Maybe the presence of a
> > > power resource (_PR3 or flags.power_resources) can be used as a hint whether
> > > to enable port PM.
> > 
> > Yes, the presence of _PR3 would be a great way to determine when to enable
> > it.
> 
> Have you been working on this or should I have a look?

I have not been.  Please have a look.  Thanks!

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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--- Comment #16 from Peter Wu <peter@lekensteyn.nl> ---
(In reply to Alex Deucher from comment #15)
> (In reply to Peter Wu from comment #14)
[..]
> > The Windows 8 requirements state that the discrete GPU is render-only[0],
> > but the Win10 reqs have no such requirement[1]. (Are these the same specs
> > you had in mind? If not, could you share the right one?) On my new hybrid
> > nvidia laptop, there are actually DP/HDMI ports to the dGPU (HDMI with
> > audio).
> 
> I had access to the PR3 spec internally.  I'm not sure if it's available
> publicly or not.  Support for displays was not included in the information I
> saw or from talking with our internal hybrid graphics architects.  It's
> possible the spec has been updated since I last talked to them earlier this
> year.  I can double check.
> 
> Does your new laptop use PR3 or the older nvidia proprietary ACPI method?

The laptop (Clevo P651RA) uses PR3 (confirmed via a Windows 10 trace):
https://github.com/Bumblebee-Project/bbswitch/issues/115#issuecomment-218622306

> > Have you been working on this or should I have a look?
> 
> I have not been.  Please have a look.  Thanks!

Ok, do you have any certainty about the earliest BIOS date where _PR3 is used?
E.g. if the minimum date is lowered to 2014 without checking for _PR3, would it
be likely to miss out some models?

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #17 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to Peter Wu from comment #16)
> Ok, do you have any certainty about the earliest BIOS date where _PR3 is
> used? E.g. if the minimum date is lowered to 2014 without checking for _PR3,
> would it be likely to miss out some models?

It's always used if it's available.  I think 2014 should be ok (should catch
most of the early ones), but I'll check with our windows architects.  I suspect
it will come down to OEM/ODMs.

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[Bug 98505] [Topaz] Regression introduces in 4.8-rc3

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[-- Attachment #1.1: Type: text/plain, Size: 517 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

Alex Deucher <alexdeucher@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pavel.ondracka@email.cz

--- Comment #18 from Alex Deucher <alexdeucher@gmail.com> ---
*** Bug 98687 has been marked as a duplicate of this bug. ***

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98505

Alex Deucher <alexdeucher@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[Topaz] Regression          |[radeon, amdgpu] Regression
                   |introduces in 4.8-rc3       |introduced in 4.8-rc3

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

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[-- Attachment #1.1: Type: text/plain, Size: 525 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #19 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to Peter Wu from comment #16)
> Ok, do you have any certainty about the earliest BIOS date where _PR3 is
> used? E.g. if the minimum date is lowered to 2014 without checking for _PR3,
> would it be likely to miss out some models?

Can you add me to any relevant threads?  I'd like to help get this fixed for
4.9.

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

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[-- Attachment #1.1: Type: text/plain, Size: 734 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #20 from Peter Wu <peter@lekensteyn.nl> ---
(In reply to Alex Deucher from comment #19)
> (In reply to Peter Wu from comment #16)
> > Ok, do you have any certainty about the earliest BIOS date where _PR3 is
> > used? E.g. if the minimum date is lowered to 2014 without checking for _PR3,
> > would it be likely to miss out some models?
> 
> Can you add me to any relevant threads?  I'd like to help get this fixed for
> 4.9.

I will, but did you get any feedback from the Windows architects yet? I'd like
to get some solid reasons that support lowering the version requirement.

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 522 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #21 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to Peter Wu from comment #20)
> 
> I will, but did you get any feedback from the Windows architects yet? I'd
> like to get some solid reasons that support lowering the version requirement.

Still waiting to hear back if they have any opinion on the dates.  On windows
it will always use PR3 if it's available.

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

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[-- Attachment #1.1: Type: text/plain, Size: 330 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #22 from Alex Deucher <alexdeucher@gmail.com> ---
Update from our windows team: Hybrid graphics platforms using _PR3 were first
available in Oct 2013 (when windows 8.1 was released).

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

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[-- Attachment #1.1: Type: text/plain, Size: 882 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #23 from Peter Wu <peter@lekensteyn.nl> ---
Nayan, as a workaround you may add the pcie_port_pm=force option to your kernel
command line, then you should not need the patch. Can you check this?

Alex, I don't think that the minimum date should change in 4.8 (and 4.9?) due
to the risk of breakage since it is not just limited to amdgpu/radeon. Another
concern is that while the year seems a good heuristic, it does not match the
checks that Windows 8 performs (which may or may not be an issue):
https://msdn.microsoft.com/en-us/windows/hardware/drivers/bringup/firmware-requirements-for-d3cold

I'll bring this up with linux-pci developers after the weekend. Should I
proceed with proposing workaround amdgpu/radeon patches?

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

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[-- Attachment #1.1: Type: text/plain, Size: 452 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #24 from Nayan Deshmukh <nayan26deshmukh@gmail.com> ---
Created attachment 127944
  --> https://bugs.freedesktop.org/attachment.cgi?id=127944&action=edit
dmesg-with-pcie_port_pm=force

Without the patch and with the option pcie_port_pm=force, I get a bunch of
errors on resume. I attaching the dmesg.

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 1088 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #25 from Peter Wu <peter@lekensteyn.nl> ---
"Resume" means "runtime resume" as opposed to "resume from system sleep" right
(based on the logs).

When this happens, what is the output of "sudo lspci -s4: -nnvv"? (is the "rev"
field "ff" or something else? Does the Power Management register report D0 or
D3?)

Can you reproduce the problem in this way:

 1. Blacklist amdgpu (and radeon if enabled)
 2. Boot system
 3. Load amdgpu
 4. Wait for runtime PM to kick in (5 seconds)
 5. Wake up (e.g. "lspci")

If so, can you build your kernel with CONFIG_ACPI_DEBUG=y and either boot with
acpi.trace_state=enable? If that gives too many messages, you can also try
setting the option between step 2 and 3:

 echo enable > /sys/module/acpi/parameters/trace_state

What is the dmesg for this? (At this moment it is not clear for me what the
port PM is doing versus what amdgpu is doing, hopefully some logs will clarify
this).

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

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[-- Attachment #1.1: Type: text/plain, Size: 538 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #26 from Nayan Deshmukh <nayan26deshmukh@gmail.com> ---
Created attachment 127953
  --> https://bugs.freedesktop.org/attachment.cgi?id=127953&action=edit
dmesg-with-amdgpu-blacklisted

I meant runtime resume. I am attaching the dmesg after blacklisting amdgpu and
loading it without the debug option. I will recompile the kernel with the debug
options and upload it whenever I am free.

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

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[-- Attachment #1.1: Type: text/plain, Size: 324 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #27 from Nayan Deshmukh <nayan26deshmukh@gmail.com> ---
Created attachment 127954
  --> https://bugs.freedesktop.org/attachment.cgi?id=127954&action=edit
sudo lspci -s4: -nnvv

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 311 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #28 from Peter Wu <peter@lekensteyn.nl> ---
Ok, when possible, please try to obtain a dmesg with CONFIG_ACPI_DEBUG=y and
the trace_state option as described above.

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 1130 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #29 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to Peter Wu from comment #23)
> Alex, I don't think that the minimum date should change in 4.8 (and 4.9?)
> due to the risk of breakage since it is not just limited to amdgpu/radeon.
> Another concern is that while the year seems a good heuristic, it does not
> match the checks that Windows 8 performs (which may or may not be an issue):
> https://msdn.microsoft.com/en-us/windows/hardware/drivers/bringup/firmware-
> requirements-for-d3cold

I agree that using the date is probably not a good idea, but it's what we have
now.  Adjusting the date seems lower impact than changing the policy for these
kernels.

> 
> I'll bring this up with linux-pci developers after the weekend. Should I
> proceed with proposing workaround amdgpu/radeon patches?

Sounds good.  I generally don't like hacking around this in the driver, but I
guess it's better than nothing at this point.  Thanks for your help with this.

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

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[-- Attachment #1.1: Type: text/plain, Size: 437 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #30 from Nayan Deshmukh <nayan26deshmukh@gmail.com> ---
Created attachment 128042
  --> https://bugs.freedesktop.org/attachment.cgi?id=128042&action=edit
dmesg_with_debug_options

Sorry for the delay, I compiled my kernel with CONFIG_DEBUG_ACPI=y followed the
steps that you mentioned.

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 547 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #31 from Peter Wu <peter@lekensteyn.nl> ---
(In reply to Nayan Deshmukh from comment #30)
> Created attachment 128042 [details]
> dmesg_with_debug_options
> 
> Sorry for the delay, I compiled my kernel with CONFIG_DEBUG_ACPI=y followed
> the steps that you mentioned.

Have you enabled acpi.trace_state=enable (either via cmdline or before loading
the module)? It does not appear in the logs.

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

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[-- Attachment #1.1: Type: text/plain, Size: 424 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

Nayan Deshmukh <nayan26deshmukh@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #128042|0                           |1
        is obsolete|                            |

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 327 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #32 from Nayan Deshmukh <nayan26deshmukh@gmail.com> ---
Created attachment 128064
  --> https://bugs.freedesktop.org/attachment.cgi?id=128064&action=edit
dmesg_with_debug_options

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 1160 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #33 from Peter Wu <peter@lekensteyn.nl> ---
(In reply to Nayan Deshmukh from comment #32)
> Created attachment 128064
> dmesg_with_debug_options

These logs do not show the "resume failed" messages that appeared in the
original logs. Could you try to trigger this?

The logs also shows no \_SB.PCI0.RP05.PC05._ON (or _OFF) method invocations, so
pcie_port_pm=off (or force) is likely not going to make a difference here.

Btw, to increase the kernel log size from 256K you could pass log_buf_len=1M to
your cmdline. Could you try obtaining a log where the "resume failed" messages
are shown?

These messages also look suspicious, any idea what it could be? (Alex?)
[  221.378665] VI should always have 2 performance levels
[  221.380787]  failed to send message 18a ret is 255 
[  221.380794]  failed to send pre message 145 ret is 255 
[  221.621346]  failed to send message 146 ret is 0 
[  221.862589]  failed to send pre message 148 ret is 0 

They also appear in bug 97240 and bug 97548.

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 473 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

--- Comment #34 from Nayan Deshmukh <nayan26deshmukh@gmail.com> ---
Created attachment 128075
  --> https://bugs.freedesktop.org/attachment.cgi?id=128075&action=edit
dmesg-without_blacklist

Sorry for the previous logs they had an extra patch so please ignore them.
I can get the same error messages if the amdgpu is not blacklisted.

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 851 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

Nayan Deshmukh <nayan26deshmukh@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #127953|0                           |1
        is obsolete|                            |
 Attachment #128064|0                           |1
        is obsolete|                            |

--- Comment #35 from Nayan Deshmukh <nayan26deshmukh@gmail.com> ---
Created attachment 128076
  --> https://bugs.freedesktop.org/attachment.cgi?id=128076&action=edit
dmesg_with_blacklist

This is the dmesg with blacklisting amdgpu, it also leads to similar errors but
this is a bit different from the previous one.

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 566 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

Nayan Deshmukh <nayan26deshmukh@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #36 from Nayan Deshmukh <nayan26deshmukh@gmail.com> ---
The bug is fixed in 4.9-rc7. Thanks for the effort Peter.

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[Bug 98505] [radeon, amdgpu] Regression introduced in 4.8-rc3

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[-- Attachment #1.1: Type: text/plain, Size: 502 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=98505

Jari Tahvanainen <jari.tahvanainen@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #37 from Jari Tahvanainen <jari.tahvanainen@intel.com> ---
Closing resolved+Fixed. Verified by Reporter.

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