[Bug 79932] New: [HSW Bisected]igt/kms_fbc_crc subcases skip

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79932

          Priority: high
            Bug ID: 79932
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [HSW Bisected]igt/kms_fbc_crc subcases skip
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 100910
  --> https://bugs.freedesktop.org/attachment.cgi?id=100910&action=edit
dmesg

==System Environment==
--------------------------
Regression: Yes. 


Non-working platforms: HSW

==kernel==
--------------------------
origin/drm-intel-nightly: 1d3e80d9ff52ecaeecc5b78de32f9bb07ad2231f(fails)
    drm-intel-nightly: 2014y-06m-11d-17h-06m-58s integration manifest
origin/drm-intel-next-queued: 93ec0735decd18e8bdbf8bb9067614f4174ae723(works)
    drm/i915: Fix VLV CRC reading.
origin/drm-intel-fixes: 60671f01a626232532d5b2359bb39ddcce58ec06(fails)
    drm/i915: fix possible refcount leak when resetting forcewake

==Bug detailed description==
-----------------------------
igt/kms_fbc_crc subcases skip

Cases list:
igt/kms_fbc_crc/blt
igt/kms_fbc_crc/context
igt/kms_fbc_crc/mmap_cpu
igt/kms_fbc_crc/mmap_gtt
igt/kms_fbc_crc/page_flip
igt/kms_fbc_crc/page_flip_and_blt
igt/kms_fbc_crc/page_flip_and_context
igt/kms_fbc_crc/page_flip_and_mmap_cpu
igt/kms_fbc_crc/page_flip_and_mmap_gtt
igt/kms_fbc_crc/page_flip_and_render
igt/kms_fbc_crc/render


Output:
./kms_fbc_crc
IGT-Version: 1.7-g4e9df4f (x86_64) (Linux:
3.15.0-rc3_drm-intel-fixes_60671f_20140611+ x86_64)
Test requirement not met in function __real_main487, file kms_fbc_crc.c:513:
Last errno: 0, Success
Test requirement: (!(!strstr(buf, "unsupported by this chipset") &&
!strstr(buf, "disabled per module param") && !strstr(buf, "disabled per chip
default")))
FBC not supported/enabled
Subtest page_flip: SKIP
Subtest mmap_cpu: SKIP
Subtest mmap_gtt: SKIP
Subtest blt: SKIP
Subtest render: SKIP
Subtest context: SKIP
Subtest page_flip_and_mmap_cpu: SKIP
Subtest page_flip_and_mmap_gtt: SKIP
Subtest page_flip_and_blt: SKIP
Subtest page_flip_and_render: SKIP
Subtest page_flip_and_context: SKIP

==Reproduce steps==
---------------------------- 
1. ./kms_fbc_crc

==Bisect results==
----------------------------
Bisect shows: 0368920e51ae0cded0eb518c340a4dd17764d461 is the first bad commit
Author:     Chris Wilson <chris at chris-wilson.co.uk>
AuthorDate: Fri Jun 6 10:37:11 2014 +0100
Commit:     Jani Nikula <jani.nikula at intel.com>
CommitDate: Wed Jun 11 11:06:43 2014 +0300

    drm/i915: Disable FBC by default also on Haswell and later

    It causes black screen on bootup and is approximately 100x slower than
    running with FBC disabled, so the GPU runs at a high frequency for much
    longer - completely contrary to the power saving claims. It also still
    has mutex deadlocks in multi-head scenarios, which can lead to a
    system/X lockup. These bugs were known before FBC was enabled by default
    on Haswell and still have not been fixed.

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=79716
    Reported-and-tested-by: Jon Kristensen <info at jonkri.com>
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>
    Cc: stable at vger.kernel.org
    [Jani: update subject to reflect the actual change]
    Signed-off-by: Jani Nikula <jani.nikula at intel.com>

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