[Bug 83177] New: [BDW Regression]igt/=?UTF-8?Q?pm=5Frpm=20some=20subcases=20cause=20=E2=80=9CWARNING?=: CPU: 0 PID: 4578 at drivers/gpu/drm/i915/intel_display.c:1294 hsw_disable_ips+0x2d/0x15a [i915]() ”

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Aug 27 23:19:53 PDT 2014 

https://bugs.freedesktop.org/show_bug.cgi?id=83177

          Priority: medium
            Bug ID: 83177
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BDW Regression]igt/pm_rpm some subcases cause
                    “WARNING: CPU: 0 PID: 4578 at
                    drivers/gpu/drm/i915/intel_display.c:1294
                    hsw_disable_ips+0x2d/0x15a [i915]()”
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 105369
  --> https://bugs.freedesktop.org/attachment.cgi?id=105369&action=edit
dmesg

==System Environment==
--------------------------
Regression: Yes. 
Good commit on -next-queued: 3a5f87c286515c54ff5c52c3e64d0c522b7570c0

Non-working platforms: BDW

==kernel==
--------------------------
origin/drm-intel-nightly: e91331cf71c509af3dfae75cd9bca3db13d7da95(fails)
    drm-intel-nightly: 2014y-08m-27d-21h-32m-10s integration manifest
origin/drm-intel-next-queued: 661ccef518a23dd6b3aff11ca6eee9c71568f37a(works)
    drm/i915/bdw: BDW Software Turbo
origin/drm-intel-fixes: 813008cd3e93ea8a571b2b7d5b9360a3105b50f7(fails)
    drm/i915: don't warn if backlight unexpectedly enabled

==Bug detailed description==
igt/pm_rpm some subcases cause “WARNING: CPU: 0 PID: 4578 at
drivers/gpu/drm/i915/intel_display.c:1294 hsw_disable_ips+0x2d/0x15a [i915]()”

Case list:
igt/pm_rpm/cursor
igt/pm_rpm/cursor-dpms
igt/pm_rpm/debugfs-forcewake-user
igt/pm_rpm/debugfs-read
igt/pm_rpm/dpms-lpsp
igt/pm_rpm/dpms-mode-unset-lpsp
igt/pm_rpm/fences
igt/pm_rpm/fences-dpms
igt/pm_rpm/gem-execbuf-stress
igt/pm_rpm/gem-execbuf-stress-extra-wait
igt/pm_rpm/gem-execbuf-stress-pc8
igt/pm_rpm/legacy-planes
igt/pm_rpm/legacy-planes-dpms
igt/pm_rpm/modeset-lpsp
igt/pm_rpm/modeset-pc8-residency-stress
igt/pm_rpm/pc8-residency
igt/pm_rpm/reg-read-ioctl
igt/pm_rpm/rte
igt/pm_rpm/sysfs-read
igt/pm_rpm/system-suspend
igt/pm_rpm/universal-planes

Output:
root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./pm_rpm
--run-subtest cursor
IGT-Version: 1.7-g50166d2 (x86_64) (Linux:
3.17.0-rc2_drm-intel-nightly_e91331_20140828+ x86_64)
Runtime PM support: 1
PC8 residency support: 1
Subtest cursor: SUCCESS
root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r|egrep
""<[1-4]>""|grep drm
<4>[  377.801759] WARNING: CPU: 0 PID: 4578 at
drivers/gpu/drm/i915/intel_display.c:1294 hsw_disable_ips+0x2d/0x15a [i915]()
<4>[  377.801762] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support ppdev pcspkr i2c_i801 snd_hda_intel snd_hda_controller
lpc_ich mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore
battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  377.801807] CPU: 0 PID: 4578 Comm: pm_rpm Tainted: G        W     
3.17.0-rc2_drm-intel-nightly_e91331_20140828+ #1896
<4>[  377.801971]  [<ffffffffa0018149>] ?
drm_mode_set_config_internal+0x48/0xbd [drm]
<4>[  377.801979]  [<ffffffffa001bb64>] ? drm_mode_setcrtc+0x3e6/0x48b [drm]
<4>[  377.801986]  [<ffffffffa0010908>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  377.801996]  [<ffffffffa001b77e>] ? drm_mode_setplane+0x16d/0x16d [drm]
<4>[  379.997434] WARNING: CPU: 0 PID: 4578 at
drivers/gpu/drm/i915/intel_uncore.c:47 gen8_write32+0x70/0x11a [i915]()
<4>[  379.997436] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support ppdev pcspkr i2c_i801 snd_hda_intel snd_hda_controller
lpc_ich mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore
battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  379.997453] CPU: 0 PID: 4578 Comm: pm_rpm Tainted: G        W     
3.17.0-rc2_drm-intel-nightly_e91331_20140828+ #1896
<4>[  379.997514]  [<ffffffffa0023897>] ? drm_modeset_lock+0x52/0xb3 [drm]
<4>[  379.997521]  [<ffffffffa00190d4>] ? setplane_internal+0x262/0x2bc [drm]
<4>[  379.997531]  [<ffffffffa00192c9>] ? drm_mode_cursor_common+0x19b/0x27d
[drm]
<4>[  379.997538]  [<ffffffffa001bc3a>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  379.997545]  [<ffffffffa0010908>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  379.997554]  [<ffffffffa001bc09>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<3>[  379.997590] [drm:hsw_unclaimed_reg_detect] *ERROR* Unclaimed register
detected. Please use the i915.mmio_debug=1 to debug this problem.
<4>[  379.997607] WARNING: CPU: 0 PID: 4578 at
drivers/gpu/drm/i915/intel_uncore.c:47 gen8_write32+0x70/0x11a [i915]()
<4>[  379.997609] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support ppdev pcspkr i2c_i801 snd_hda_intel snd_hda_controller
lpc_ich mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore
battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  379.997624] CPU: 0 PID: 4578 Comm: pm_rpm Tainted: G        W     
3.17.0-rc2_drm-intel-nightly_e91331_20140828+ #1896
<4>[  379.997677]  [<ffffffffa0018ecc>] ? setplane_internal+0x5a/0x2bc [drm]
<4>[  379.997687]  [<ffffffffa00192c9>] ? drm_mode_cursor_common+0x19b/0x27d
[drm]
<4>[  379.997694]  [<ffffffffa001bc3a>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  379.997700]  [<ffffffffa0010908>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  379.997708]  [<ffffffffa001bc09>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<3>[  379.997740] [drm:hsw_unclaimed_reg_detect] *ERROR* Unclaimed register
detected. Please use the i915.mmio_debug=1 to debug this problem.
<4>[  382.054184] WARNING: CPU: 0 PID: 4578 at
drivers/gpu/drm/i915/intel_uncore.c:47 gen8_write32+0x70/0x11a [i915]()
<4>[  382.054186] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support ppdev pcspkr i2c_i801 snd_hda_intel snd_hda_controller
lpc_ich mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore
battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  382.054202] CPU: 0 PID: 4578 Comm: pm_rpm Tainted: G        W     
3.17.0-rc2_drm-intel-nightly_e91331_20140828+ #1896
<4>[  382.054257]  [<ffffffffa0023897>] ? drm_modeset_lock+0x52/0xb3 [drm]
<4>[  382.054264]  [<ffffffffa00190d4>] ? setplane_internal+0x262/0x2bc [drm]
<4>[  382.054274]  [<ffffffffa00192c9>] ? drm_mode_cursor_common+0x19b/0x27d
[drm]
<4>[  382.054281]  [<ffffffffa001bc3a>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  382.054288]  [<ffffffffa0010908>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  382.054296]  [<ffffffffa001bc09>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<3>[  382.054329] [drm:hsw_unclaimed_reg_detect] *ERROR* Unclaimed register
detected. Please use the i915.mmio_debug=1 to debug this problem.
<4>[  386.068681] WARNING: CPU: 0 PID: 4578 at
drivers/gpu/drm/i915/intel_uncore.c:47 gen8_write32+0x70/0x11a [i915]()
<4>[  386.068683] Modules linked in: dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support ppdev pcspkr i2c_i801 snd_hda_intel snd_hda_controller
lpc_ich mfd_core snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore
battery parport_pc parport ac acpi_cpufreq i915 button video drm_kms_helper drm
cfbfillrect cfbimgblt cfbcopyarea
<4>[  386.068698] CPU: 0 PID: 4578 Comm: pm_rpm Tainted: G        W     
3.17.0-rc2_drm-intel-nightly_e91331_20140828+ #1896
<4>[  386.068756]  [<ffffffffa0018ecc>] ? setplane_internal+0x5a/0x2bc [drm]
<4>[  386.068766]  [<ffffffffa00192c9>] ? drm_mode_cursor_common+0x19b/0x27d
[drm]
<4>[  386.068774]  [<ffffffffa001bc3a>] ? drm_mode_cursor_ioctl+0x31/0x36 [drm]
<4>[  386.068780]  [<ffffffffa0010908>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  386.068789]  [<ffffffffa001bc09>] ? drm_mode_setcrtc+0x48b/0x48b [drm]
<3>[  386.068822] [drm:hsw_unclaimed_reg_detect] *ERROR* Unclaimed register
detected. Please use the i915.mmio_debug=1 to debug this problem.

==Reproduce steps==
---------------------------- 
1. ./pm_rpm --run-subtest cursor

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