[Bug 28375] New: [KMS][RV620] Lockup on PM reclock

[Bug 28375] New: [KMS][RV620] Lockup on PM reclock

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28375

           Summary: [KMS][RV620] Lockup on PM reclock
           Product: DRI
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: zajec5@gmail.com


I use today's d-r-t with my notebook.

1) Booting into init 3 and massive (50 times) switching between high and low
profile
No problems.

2) Booting into init 5 and switching to high profile
Some kind of [black screen|lockup|reclock] loop. I get black screen for second,
then corrupted and freezed display for a moment, then black screen again and so
on. Sysrq works.

3) Booting into init 5, switching to dynpm, provoking short upclocking
Black screen for a second, just WARNING or lockup detection (dmesgs attached)

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

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https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #1 from Rafał Miłecki <zajec5@gmail.com> 2010-06-03 16:28:41 PDT ---
Created an attachment (id=36046)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36046)
dmesg with WARNING no. 1

Most important part:
[  512.026242] WARNING: at drivers/gpu/drm/radeon/radeon_fence.c:235
radeon_fence_wait+0x236/0x290 [radeon]()

Backtrace quite useless :|
[  512.026794]  [<fac7a34d>] drm_ioctl+0x12d/0x350 [drm]
[  512.026919]  [<fac7a220>] ? drm_ioctl+0x0/0x350 [drm]

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #2 from Rafał Miłecki <zajec5@gmail.com> 2010-06-03 16:30:22 PDT ---
Created an attachment (id=36047)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36047)
dmesg with WARNING no. 2

Most important part:
[  743.244277] WARNING: at drivers/gpu/drm/radeon/radeon_fence.c:235
radeon_fence_wait+0x236/0x290 [radeon]()

Backtrace quite useless :|
[  743.244819]  [<fac7a34d>] drm_ioctl+0x12d/0x350 [drm]
[  743.244929]  [<fac7a220>] ? drm_ioctl+0x0/0x350 [drm]

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #3 from Rafał Miłecki <zajec5@gmail.com> 2010-06-03 16:32:45 PDT ---
Created an attachment (id=36048)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36048)
dmesg with WARNING no. 3 (with drm:drm_ioctl)

In previous dmesgs I disabled drm:drm_ioctl debugging. This one keeps that
debugging enabled.

Most important part:
[  101.033181] WARNING: at drivers/gpu/drm/radeon/radeon_fence.c:235
radeon_fence_wait+0x236/0x290 [radeon]()

Backtrace quite useless :|
[  101.033712]  [<fac7d3c2>] drm_ioctl+0x1a2/0x3f0 [drm]
[  101.033828]  [<fac7d220>] ? drm_ioctl+0x0/0x3f0 [drm]

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

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https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #4 from Alex Deucher <agd5f@yahoo.com> 2010-06-03 16:39:21 PDT ---
Also are you using the ddx tiling patches?  If so, do you get the same lock up
with those removed?  This might be a dupe of bug 28342.

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

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https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #5 from Rafał Miłecki <zajec5@gmail.com> 2010-06-03 16:42:37 PDT ---
Created an attachment (id=36049)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36049)
dmesg with GPU lockup CP stall detected no. 1

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

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https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #6 from Rafał Miłecki <zajec5@gmail.com> 2010-06-03 16:47:24 PDT ---
Created an attachment (id=36050)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36050)
dmesg with GPU lockup CP stall detected no. 2

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

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https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #7 from Rafał Miłecki <zajec5@gmail.com> 2010-06-03 16:47:48 PDT ---
Created an attachment (id=36051)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36051)
dmesg with GPU lockup CP stall detected no. 3

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #8 from Rafał Miłecki <zajec5@gmail.com> 2010-06-03 16:51:51 PDT ---
Created an attachment (id=36052)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36052)
Xorg.0.log

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #9 from Rafał Miłecki <zajec5@gmail.com> 2010-06-03 16:53:25 PDT ---
(In reply to comment #4)
> Also are you using the ddx tiling patches?  If so, do you get the same lock up
> with those removed?  This might be a dupe of bug 28342.

Today's drm-radeon-testing means:

commit 9e67e5b1a6fd4bdca48a9c267386afb236d08783
Merge: b55ad86 e40152e
Author: Dave Airlie <airlied@redhat.com>
Date:   Tue Jun 1 13:04:52 2010 +1000

    Merge tag 'v2.6.34' into drm-radeon-testing



As for DDX I use quite old one:

commit 488c9fd8300505cc6c0c2f8f0f00849f27cc5d63
Author: Alex Deucher <alexdeucher@gmail.com>
Date:   Mon Mar 15 12:25:57 2010 -0400

    r6xx/r7xx: fix domain handling in accel code

    Noticed by Pauli and Michel on IRC.

    Improves GetImage performace by a factor of ~10.


Let me try updating it.

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #10 from Rafał Miłecki <zajec5@gmail.com> 2010-06-03 17:20:47 PDT ---
Ohh, that was silly. I didn't understand why first 3 dmesgs are so
meaningless... I grepped them for "drm"! :|

Before updating xf86-video-ati I tried patch from attachment #36012 but it does
not help.

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

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https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #11 from Rafał Miłecki <zajec5@gmail.com> 2010-06-03 17:40:09 PDT ---
Updating DDX didn't help. I gone back with drm tree to:

commit 94f2983b1dc64a4a90a1ac9a6da6d7a0ec2f06a8
Author: Tiago Vignatti <tiago.vignatti@nokia.com>
Date:   Mon May 24 18:24:31 2010 +0300

    vgaarb: use MIT license

which seems to be one commit before first tiling patches. It also has problems
I described in this bug report.

As I didn't apply any patches to DDX manually, I guess there is nothing I can
revert, right?

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #12 from Rafał Miłecki <zajec5@gmail.com> 2010-06-03 18:14:29 PDT ---
 bad: 94f2983b1dc64a4a90a1ac9a6da6d7a0ec2f06a8
good: 36d1701c502d4f46386e1000ad58d9497a11688d

Suspected commits:
drm/radeon/kms/pm: add support for SetVoltage cmd table (V2)
drm/radeon/kms/pm: voltage fixes
drm/radeon/kms/pm: radeon_set_power_state fixes
drm/radeon/kms/pm: patch default power state with default clocks/voltages on
r6xx+

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

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https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #13 from Alex Deucher <agd5f@yahoo.com> 2010-06-03 19:42:12 PDT ---
If I had to guess, I would say:
drm/radeon/kms/pm: add support for SetVoltage cmd table (V2)

Changing the voltage could be problematic on your card.  We should probably
step up/down the voltage rather than changing it directly.  E.g., when going
from 1200 to 900 millivolts, step down to 1100, 1000, then 900.  I'll see about
hacking something up tomorrow if you can verify that is the problematic commit.

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

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https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #14 from Alex Deucher <agd5f@yahoo.com> 2010-06-03 21:38:38 PDT ---
Created an attachment (id=36057)
 View: https://bugs.freedesktop.org/attachment.cgi?id=36057
 Review: https://bugs.freedesktop.org/review?bug=28375&attachment=36057

step through voltage levels

If the SetVoltage stuff is indeed causing problems, this patch might help.

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

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https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #15 from Rafał Miłecki <zajec5@gmail.com> 2010-06-04 13:48:12 PDT ---
I can confirm it's voltage setting that causes problem. Dropping it from
r600.c::r600_pm_misc makes d-r-t work again.

I didn't test your patch Alex, but it does not make much sense in my case.

1) Looking through all power modes I noticed only 2 different voltages: 950 and
1200.
2) Step is 250 anyway: 0018: USHORT usVoltageStep = 0x00fa (250)

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

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https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #16 from Rafał Miłecki <zajec5@gmail.com> 2010-06-06 03:31:16 PDT ---
Created an attachment (id=36081)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36081)
less revoltaging and more deubgging messages

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #17 from Rafał Miłecki <zajec5@gmail.com> 2010-06-06 03:34:55 PDT ---
Created an attachment (id=36082)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=36082)
dmesg with less revoltaging patch applied

There you have some results of my debugging tries.

Voltage was changed at 86.386427 and it didn't cause any problem. When starting
glxgears I expected voltage to be raised but it wasn't the case. Maybe this is
the problem?

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

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https://bugs.freedesktop.org/show_bug.cgi?id=28375

--- Comment #18 from Rafał Miłecki <zajec5@gmail.com> 2010-06-06 05:43:20 PDT ---
Patch posted:

[PATCH V3] drm/radeon/kms/r600+: use voltage from requested clock mode
http://lists.freedesktop.org/archives/dri-devel/2010-June/001139.html

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[Bug 28375] [KMS][RV620] Lockup on PM reclock

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https://bugs.freedesktop.org/show_bug.cgi?id=28375

Rafał Miłecki <zajec5@gmail.com> changed:

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

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