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ce81a65c79
linux/drivers/gpu/drm
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Michał Winiarski ce81a65c79 drm/i915: Adjust size of PIPE_CONTROL used for gen8 render seqno write 
We started to use PIPE_CONTROL to write render ring seqno in order to
combat seqno write vs interrupt generation problems. This was introduced
by commit 7c17d37737 ("drm/i915: Use ordered seqno write interrupt
generation on gen8+ execlists").

On gen8+ size of PIPE_CONTROL with Post Sync Operation should be
6 dwords. When we're using older 5-dword variant it's possible to
observe inconsistent values written by PIPE_CONTROL with Post
Sync Operation from user batches, resulting in rendering corruptions.

v2: Fix BAT failures
v3: Comments on alignment and thrashing high dword of seqno (Chris)
v4: Updated commit msg (Mika)

Testcase: igt/gem_pipe_control_store_loop/*-qword-write
Issue: VIZ-7393
Cc: stable@vger.kernel.org
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1460469115-26002-1-git-send-email-michal.winiarski@intel.com
2016-04-13 15:34:51 +03:00
..
amd Merge branch 'drm-fixes-4.6' of git://people.freedesktop.org/~agd5f/linux into drm-fixes 2016-04-07 07:08:46 +10:00
arm drm: ARM HDLCD - fix an error code 2016-04-04 10:11:33 +01:00
armada mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
ast Merge tag 'topic/drm-misc-2016-03-14' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-03-16 11:09:26 +10:00
atmel-hlcdc drm/atmel-hlcdc: use helper to get crtc state 2016-03-15 14:09:48 +01:00
bochs Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2016-03-21 13:48:00 -07:00
bridge drm/bridge: removed dummy mode_fixup function from dw-hdmi. 2016-02-11 09:24:01 +01:00
cirrus Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2016-03-21 13:48:00 -07:00
etnaviv Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2016-03-21 13:48:00 -07:00
exynos drm/exynos: add DRM_EXYNOS_GEM_MAP ioctl 2016-03-13 14:54:03 +09:00
fsl-dcu drm/fsl-dcu: removed optional dummy crtc mode_fixup function. 2016-03-04 18:16:45 +01:00
gma500 gma500: remove annoying deprecation warning 2016-04-04 12:38:46 -07:00
i2c Merge drm-fixes into drm-next. 2016-03-14 09:46:02 +10:00
i810
i915 drm/i915: Adjust size of PIPE_CONTROL used for gen8 render seqno write 2016-04-13 15:34:51 +03:00
imx drm/imx: Don't set a gamma table size 2016-03-31 11:24:37 +02:00
mga
mgag200 drm/mgag200: removed optional dummy crtc mode_fixup function. 2016-03-04 17:54:17 +01:00
msm drm/msm: fix typo in the !COMMON_CLK case 2016-03-23 18:15:49 -04:00
nouveau Merge branch 'linux-4.6' of git://github.com/skeggsb/linux into drm-fixes 2016-04-06 16:16:52 +10:00
omapdrm Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2016-03-25 08:48:31 -07:00
panel drm/panel: Changes for v4.6-rc1 2016-03-17 08:09:44 +10:00
qxl Merge drm-fixes into drm-next. 2016-03-14 09:46:02 +10:00
r128
radeon Merge branch 'drm-fixes-4.6' of git://people.freedesktop.org/~agd5f/linux into drm-fixes 2016-04-07 07:08:46 +10:00
rcar-du drm/rcar-du: removed optional dummy crtc mode_fixup function. 2016-03-04 17:58:47 +01:00
rockchip drm/rockchip: dw_hdmi: Don't call platform_set_drvdata() 2016-03-28 14:48:32 +08:00
savage
shmobile drm/shmobile: removed optional dummy crtc mode_fixup function. 2016-03-04 17:59:44 +01:00
sis
sti Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2016-03-21 13:48:00 -07:00
tdfx
tegra Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2016-03-21 13:48:00 -07:00
tilcdc drm/tilcdc: Use devm_kzalloc() and devm_kcalloc() for private data 2016-02-25 16:39:47 +02:00
ttm mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
udl drm/udl: Use unlocked gem unreferencing 2016-04-01 13:22:33 +10:00
vc4 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2016-03-21 13:48:00 -07:00
vgem
via mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
virtio drm/virtio: removed optional dummy crtc mode_fixup function. 2016-03-04 18:15:38 +01:00
vmwgfx Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2016-03-21 13:48:00 -07:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic_helper.c Merge tag 'topic/drm-misc-2016-03-22' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-03-24 08:41:59 +10:00
drm_atomic.c Merge tag 'topic/drm-misc-2016-03-22' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-03-24 08:41:59 +10:00
drm_auth.c
drm_bridge.c drm/bridge: Make (pre/post) enable/disable callbacks optional 2016-03-02 17:31:03 +01:00
drm_bufs.c
drm_cache.c
drm_context.c
drm_crtc_helper.c drm: introduce pipe color correction properties 2016-03-08 13:57:32 +01:00
drm_crtc_internal.h
drm_crtc.c Merge tag 'topic/drm-misc-2016-03-14' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-03-16 11:09:26 +10:00
drm_debugfs.c
drm_dma.c
drm_dp_aux_dev.c drm/dp: Add a drm_aux-dev module for reading/writing dpcd registers. 2016-02-12 14:22:40 +01:00
drm_dp_helper.c drm/dp: move hw_mutex up the call stack 2016-04-01 13:17:36 +10:00
drm_dp_mst_topology.c Revert "drm/dp/mst: change MST detection scheme" 2016-02-17 14:07:48 +10:00
drm_drv.c
drm_edid_load.c drm/edid: convert to use match_string() helper 2016-03-17 15:09:34 -07:00
drm_edid.c drm/edid: Extract SADs properly from multiple audio data blocks 2016-03-13 19:36:17 +01:00
drm_encoder_slave.c drm: fixes when i2c encoder slave mode_fixup is null. 2016-02-10 15:14:49 +01:00
drm_fb_cma_helper.c
drm_fb_helper.c drm/fb_helper: Use add_one_connector in add_all_connectors. 2016-02-15 14:56:46 +01:00
drm_flip_work.c
drm_fops.c
drm_gem_cma_helper.c dma, mm/pat: Rename dma_*_writecombine() to dma_*_wc() 2016-03-09 14:57:51 +01:00
drm_gem.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
drm_global.c
drm_hashtab.c
drm_info.c
drm_internal.h
drm_ioc32.c
drm_ioctl.c
drm_irq.c Merge drm-fixes into drm-next. 2016-03-14 09:46:02 +10:00
drm_kms_helper_common.c drm/dp: Add a drm_aux-dev module for reading/writing dpcd registers. 2016-02-12 14:22:40 +01:00
drm_legacy.h
drm_lock.c
drm_memory.c
drm_mipi_dsi.c drm/dsi: Get DSI host by DT device node 2016-03-02 17:02:54 +01:00
drm_mm.c
drm_modes.c drm: modes: add missing [drm] to message printing 2016-02-09 16:34:44 +01:00
drm_modeset_lock.c
drm_of.c drm: add drm_of_encoder_active_endpoint helpers 2016-02-10 14:19:21 +01:00
drm_panel.c
drm_pci.c
drm_plane_helper.c
drm_platform.c
drm_prime.c
drm_probe_helper.c
drm_rect.c
drm_scatter.c
drm_sysfs.c
drm_trace_points.c
drm_trace.h
drm_vm.c
drm_vma_manager.c
Kconfig Merge branch 'drm-next-4.6' of git://people.freedesktop.org/~agd5f/linux into drm-next 2016-02-19 11:13:01 +10:00
Makefile Merge tag 'topic/drm-misc-2016-02-18' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-02-19 10:57:44 +10:00