[Bug 58166] New: RV670 AGP regression between drm-fixes and drm-next - no display.

[Bug 58166] New: RV670 AGP regression between drm-fixes and drm-next - no display.

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https://bugs.freedesktop.org/show_bug.cgi?id=58166

          Priority: medium
            Bug ID: 58166
          Assignee: dri-devel@lists.freedesktop.org
           Summary: RV670 AGP regression between drm-fixes and drm-next -
                    no display.
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: lists@andyfurniss.entadsl.com
          Hardware: x86 (IA32)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

Created attachment 71363
  --> https://bugs.freedesktop.org/attachment.cgi?id=71363&action=edit
working dmesg drm-fixes

Just put my RV670 AGP back in an old box that's been running a r300 for the
past 6 months.

Booting with drm-fixes kernel works, drm-next fails - I loose display as soon
as I modprobe radeon, sysrq works. Exact line used =

modprobe radeon modeset=1 agpmode=8 no_wb=1

agpmode=-1 doesn't help.

dmesg from working and log from fail attached.

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[Bug 58166] RV670 AGP regression between drm-fixes and drm-next - no display.

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https://bugs.freedesktop.org/show_bug.cgi?id=58166

--- Comment #1 from Andy Furniss <lists@andyfurniss.entadsl.com> ---
Created attachment 71366
  --> https://bugs.freedesktop.org/attachment.cgi?id=71366&action=edit
failing kernel log drm-next

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[Bug 58166] RV670 AGP regression between drm-fixes and drm-next - no display.

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https://bugs.freedesktop.org/show_bug.cgi?id=58166

--- Comment #2 from Alex Deucher <agd5f@yahoo.com> ---
Does it work if you disable AGP? Boot with radeon.agpmode=-1 on the kernel
command line in grub.

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[Bug 58166] RV670 AGP regression between drm-fixes and drm-next - no display.

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https://bugs.freedesktop.org/show_bug.cgi?id=58166

--- Comment #3 from Alex Deucher <agd5f@yahoo.com> ---
Sorry, missed the line about agpmode in comment 1.

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[Bug 58166] RV670 AGP regression between drm-fixes and drm-next - no display.

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https://bugs.freedesktop.org/show_bug.cgi?id=58166

--- Comment #4 from Michel Dänzer <michel@daenzer.net> ---
Can you bisect?

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[Bug 58166] RV670 AGP regression between drm-fixes and drm-next - no display.

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https://bugs.freedesktop.org/show_bug.cgi?id=58166

--- Comment #5 from Andy Furniss <lists@andyfurniss.entadsl.com> ---
(In reply to comment #4)
> Can you bisect?

commit 4d75658bffea78f0c6f82fd46df1ec983ccacdf0
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Thu Sep 27 15:08:35 2012 -0400

    drm/radeon/kms: Add initial support for async DMA on r6xx/r7xx

    Uses the new multi-ring infrastucture.  6xx/7xx has a single
    async DMA ring.

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[Bug 58166] RV670 AGP regression between drm-fixes and drm-next - no display.

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https://bugs.freedesktop.org/show_bug.cgi?id=58166

--- Comment #6 from Jerome Glisse <glisse@freedesktop.org> ---
Created attachment 71412
  --> https://bugs.freedesktop.org/attachment.cgi?id=71412&action=edit
Fix dma fence driver

This patch should fix it for you. If it doesn't please also apply on top of it
the patch that i will attach next.

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[Bug 58166] RV670 AGP regression between drm-fixes and drm-next - no display.

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https://bugs.freedesktop.org/show_bug.cgi?id=58166

--- Comment #7 from Jerome Glisse <glisse@freedesktop.org> ---
Created attachment 71413
  --> https://bugs.freedesktop.org/attachment.cgi?id=71413&action=edit
Force wb bo into vram

If previous patch didn't fix the issue on its own please also apply this patch
on top of it

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[Bug 58166] RV670 AGP regression between drm-fixes and drm-next - no display.

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https://bugs.freedesktop.org/show_bug.cgi?id=58166

--- Comment #8 from Andy Furniss <lists@andyfurniss.entadsl.com> ---
(In reply to comment #6)
> Created attachment 71412 [details]
> Fix dma fence driver
> 
> This patch should fix it for you. If it doesn't please also apply on top of
> it the patch that i will attach next.

This fixes it, thanks.

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[Bug 58166] RV670 AGP regression between drm-fixes and drm-next - no display.

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https://bugs.freedesktop.org/show_bug.cgi?id=58166

Florian Mickler <florian@mickler.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |florian@mickler.org

--- Comment #9 from Florian Mickler <florian@mickler.org> ---
A patch referencing this bug report has been merged in Linux v3.8-rc1:

commit 86a1881d08f65a42c17071a59c0088dbe2870246
Author: Jerome Glisse <jglisse@redhat.com>
Date:   Wed Dec 12 16:43:15 2012 -0500

    drm/radeon: fix fence driver for dma ring when wb is disabled

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[Bug 58166] RV670 AGP regression between drm-fixes and drm-next - no display.

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https://bugs.freedesktop.org/show_bug.cgi?id=58166

Andy Furniss <lists@andyfurniss.entadsl.com> changed:

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

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