[Bug 81701] [BDW Regression]igt/gem_reset_stats some subcases cause "[drm:hsw_unclaimed_reg_detect] *ERROR* Unclaimed register detected. Please use the i915.mmio_debug=1 to debug this problem."

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81701

yaoming <ming.yao at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|bisect_pending              |

--- Comment #5 from yaoming <ming.yao at intel.com> ---
I tested on latest drm-intel-nightly(8980a4380b606860ba0165ed0156a64e79109677)
and latest drm-intel-next-queued(a6f9a026761c9c9440bb6a387e84a47d40290176),
these sub cases passed.
________________________________________________________________________________
root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# 
./gem_reset_stats --run-subtest reset-stats-ctx-render
IGT-Version: 1.7-gac31f19 (x86_64) (Linux:
3.16.0-rc4_drm-intel-next-queued_a6f9a0_20140805+ x86_64)
Subtest reset-stats-ctx-render: SUCCESS
root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#  dmesg -r|egrep
"<[1-4]>"|grep drm
root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# uname -a
Linux x-bdw05 3.16.0-rc4_drm-intel-next-queued_a6f9a0_20140805+ #1120 SMP Tue
Aug 5 11:42:24 CST 2014 x86_64 x86_64 x86_64 GNU/Linux

commit a6f9a026761c9c9440bb6a387e84a47d40290176
Author: Rodrigo Vivi <rodrigo.vivi at intel.com>
Date:   Fri Aug 1 09:13:28 2014 -0700

    drm/i915: Fix DEIER and GTIER collecting for BDW.

    BDW has many other Display Engine interrupts and GT interrupts registers.
    Collecting it properly on gpu_error_state.

    On debugfs all was properly listed already but besides we were also listing
old
    DEIER and GTIER that doesn't exist on BDW anymore. This was causing
    unclaimed register messages:

    https://bugs.freedesktop.org/show_bug.cgi?id=81701

    v2: Fix small issues of first version and don't read DEIER regs when pipe's
        power well is disabled
    v3: bikeshed accepted: use enum pipe pipe instead of int i for pipe
interection

    Cc: Paulo Zanoni <paulo.r.zanoni at intel.com>
    Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
    Reviewed-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
________________________________________________________________________________

root at x-bdw05:~# cd /GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests;
./gem_reset_stats --run-subtest reset-stats-ctx-render
IGT-Version: 1.7-gac31f19 (x86_64) (Linux:
3.16.0-rc6_drm-intel-nightly_8980a4_20140805+ x86_64)
Subtest reset-stats-ctx-render: SUCCESS
root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#  dmesg -r|egrep
"<[1-4]>"|grep drm
root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# uname -a
Linux x-bdw05 3.16.0-rc6_drm-intel-nightly_8980a4_20140805+ #1116 SMP Tue Aug 5 
11:24:43 CST 2014 x86_64 x86_64 x86_64 GNU/Linux

commit 8980a4380b606860ba0165ed0156a64e79109677
Author: Daniel Vetter <daniel.vetter at ffwll.ch>
Date:   Mon Aug 4 17:24:12 2014 +0200

    drm-intel-nightly: 2014y-08m-04d-17h-23m-47s integration manifest

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