[Bug 97029] cik_sdma_copy_texture broken on Carrizo (mesa 12)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97029

            Bug ID: 97029
           Summary: cik_sdma_copy_texture broken on Carrizo (mesa 12)
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: darktjm at gmail.com
        QA Contact: dri-devel at lists.freedesktop.org

Created attachment 125240
  --> https://bugs.freedesktop.org/attachment.cgi?id=125240&action=edit
xwd output with bug

Mesa 12 corrupts large image displays in X on my hardware, using
xf86-video-amdgpu 1.1.0 (glamor).  To reproduce, xwd | xwud.  The xwd capture
is garbled (see attached), and xwud sprays the garbled mess in disconnected
chunks to its right.  I noticed this in pre-12 git as well, but didn't report
because I have limited net access and limited machine availability and hoped
someone better equipped would discover and deal with it.  The commit which
caused this is 70934de00eb42ba6fc43d104875962dfb260a1b3.  Removing the call to
cik_sdma_copy_texture "fixes" it.  This was observed on two different machines,
but similar hardware (A10 Carrizo).  Verfied still broken as of
4f89cf4941db0a5cd8a85b943121840000cf8e4f.

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