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2018-04-10drm/i915: Add debugfs file to clear FIFO underruns.Maarten Lankhorst1-0/+28
Adding a i915_fifo_underrun_reset debugfs file will make it possible for IGT tests to clear FIFO underrun fallout at the start of each subtest, and make re-enable FBC so tests always have maximum exposure to features used by IGT. FIFO underruns and FBC bugs will no longer hide when an earlier subtests disables both. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> References: https://bugs.freedesktop.org/show_bug.cgi?id=105685 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105681 Link: https://patchwork.freedesktop.org/patch/msgid/20180328100526.36467-1-maarten.lankhorst@linux.intel.com Acked-by: Jani Nikula <jani.nikula@linux.intel.com> [mlankhorst: Reset FBC reason if underrun had occurred. (vivijim)] Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-03-07drm/i915: Handle changing enable_fbc parameter at runtime better.Maarten Lankhorst1-26/+36
If i915.enable_fbc is cleared at runtime, but FBC was previously enabled then we don't disable FBC until the next time the crtc is disabled. Make sure that if the module param is changed, we disable FBC in intel_fbc_post_update so we never have to worry about disabling. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180305123608.20665-1-maarten.lankhorst@linux.intel.com Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-03-02drm/i915/gen9, gen10: Disable FBC on planes with a misaligned Y-offsetImre Deak1-0/+11
Enabling FBC on a plane having a Y-offset that isn't divisible by 4 may cause pipe FIFO underruns and flickers, so disable FBC on such a config. I tried the followings to work around the issue: - enable each HW work around in ILK_DPFC_CHICKEN - disable each compression algorithm in ILK_DPFC_CONTROL - disable low-power watermarks None of the above got rid of the problem. I haven't found this issue in the Bspec/WA database either. Besides the igt testcase below (yet to be merged) an easy way to reproduce the issue is to enable a plane with FBC and a plane Y-offset not aligned to 4 and then just enable/disable FBC in a loop, keeping the plane enabled. I could trigger the problem on BXT/GLK/SKL/CNL, so assume for now that it's only present on GEN9 and GEN10. v2: (Ville) - Run the test/apply the WA on CNL as well. - Use IS_GEN() instead of INTEL_GEN(). - Fix spelling. Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Testcase: igt/kms_plane/plane-clipping-pipe-A-planes Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180301134457.13974-1-imre.deak@intel.com
2018-03-01Merge drm-next into drm-intel-next-queued (this time for real)Joonas Lahtinen1-2/+1
To pull in the HDCP changes, especially wait_for changes to drm/i915 that Chris wants to build on top of. Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2018-03-01Merge tag 'drm-intel-next-2018-02-21' of git://anongit.freedesktop.org/drm/drm-intel into drm-nextDave Airlie1-4/+9
Driver Changes: - Lift alpha_support protection from Cannonlake (Rodrigo) * Meaning the driver should mostly work for the hardware we had at our disposal when testing * Used to be preliminary_hw_support - Add missing Cannonlake PCI device ID of 0x5A4C (Rodrigo) - Cannonlake port register fix (Mahesh) - Fix Dell Venue 8 Pro black screen after modeset (Hans) - Fix for always returning zero out-fence from execbuf (Daniele) - Fix HDMI audio when no no relevant video output is active (Jani) - Fix memleak of VBT data on driver_unload (Hans) - Fix for KASAN found locking issue (Maarten) - RCU barrier consolidation to improve igt/gem_sync/idle (Chris) - Optimizations to IRQ handlers (Chris) - vblank tracking improvements (64-bit resolution, PM) (Dhinakaran) - Pipe select bit corrections (Ville) - Reduce runtime computed device_info fields (Chris) - Tune down some WARN_ONs to GEM_BUG_ON now that CI has good coverage (Chris) - A bunch of kerneldoc warning fixes (Chris) * tag 'drm-intel-next-2018-02-21' of git://anongit.freedesktop.org/drm/drm-intel: (113 commits) drm/i915: Update DRIVER_DATE to 20180221 drm/i915/fbc: Use PLANE_HAS_FENCE to determine if the plane is fenced drm/i915/fbdev: Use the PLANE_HAS_FENCE flags from the time of pinning drm/i915: Move the policy for placement of the GGTT vma into the caller drm/i915: Also check view->type for a normal GGTT view drm/i915: Drop WaDoubleCursorLP3Latency:ivb drm/i915: Set the primary plane pipe select bits on gen4 drm/i915: Don't set cursor pipe select bits on g4x+ drm/i915: Assert that we don't overflow frontbuffer tracking bits drm/i915: Track number of pending freed objects drm/i915/: Initialise trans_min for skl_compute_transition_wm() drm/i915: Clear the in-use marker on execbuf failure drm/i915: Prune gen8_gt_irq_handler drm/i915: Track GT interrupt handling using the master iir drm/i915: Remove WARN_ONCE for failing to pm_runtime_if_in_use drm: intel_dpio_phy: fix kernel-doc comments at nested struct drm/i915: Release connector iterator on a digital port conflict. drm/i915/execlists: Remove too early assert drm/i915: Assert that we always complete a submission to guc/execlists drm: move read_domains and write_domain into i915 ...
2018-02-22drm/i915: Add a FIXME about FBC vs. fence. 90/270 degree rotationVille Syrjälä1-0/+6
Currently the FBC code doesn't handle the 90/270 degree rotated case correctly. We would need the GTT tracking to monitor the fence on the normal GTT view (the rotated view doesn't even have a fence). Not quite sure how we should program the fence Y offset etc. in that case. For now we'll end up disabling FBC with 90/270 degree rotation. Add a FIXME to remind people about this fact. v2: Reword the text (Chris) Move the FIXME to the fbc code Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180221160235.11134-7-ville.syrjala@linux.intel.com Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
2018-02-22drm/i915: Clean up fbc vs. plane checksVille Syrjälä1-24/+2
Let's record the information whether a plane can do fbc or not under struct inte_plane. v2: Rebase due to i9xx_plane_id Handle BDW/HSW correctly v3: Move inte_fbc_init() back since we depend on it happening even with i915.disable_display, and populate fbc->possible_framebuffer_bits directly from the plane init code instead v4: Add note about plane A being tied to pipe A on HSW+ Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180221173101.19385-1-ville.syrjala@linux.intel.com Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20180221160235.11134-5-ville.syrjala@linux.intel.com
2018-02-20drm/i915/fbc: Use PLANE_HAS_FENCE to determine if the plane is fencedChris Wilson1-4/+9
Rather than trusting the cached value of plane_state->vma->fence to imply whether the plane_state itself holds a reference on the framebuffer's fence, use the information provided in the plane_state->flags (PLANE_HAS_FENCE). Note that we still assume that FBC is entirely bounded by the plane_state active life span; it's not clear if that is a safe assumption. Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180220134208.24988-4-chris@chris-wilson.co.uk
2018-02-16Merge tag 'drm-misc-next-2018-02-13' of git://anongit.freedesktop.org/drm/drm-misc into drm-nextDave Airlie1-2/+1
drm-misc-next for 4.17: UAPI Changes: - drm/vc4: Expose performance counters to userspace (Boris) Cross-subsystem Changes: - MAINTAINERS: Linus to maintain panel-arm-versatile in -misc (Linus) Core Changes: - Only use swiotlb when necessary (Chunming) Driver Changes: - drm/panel: Add support for ARM Versatile panels (Linus) - pl111: Improvements around versatile panel support (Linus) ---------------------------------------- Tagged on 2018-02-06: drm-misc-next for 4.17: UAPI Changes: - Validate mode flags + type (Ville) - Deprecate unused mode flags PIXMUX, BCAST (Ville) - Deprecate unused mode types BUILTIN, CRTC_C, CLOCK_C, DEFAULT (Ville) Cross-subsystem Changes: - MAINTAINERS: s/Daniel/Maarten/ for drm-misc (Daniel) Core Changes: - gem: Export gem functions for drivers to use (Samuel) - bridge: Introduce bridge timings in drm_bridge (Linus) - dma-buf: Allow exclusive fence to be bundled in fence array when calling reservation_object_get_fences_rcu (Christian) - dp: Add training pattern 4 and HBR3 support to dp helpers (Manasi) - fourcc: Add alpha bit to formats to avoid driver format LUTs (Maxime) - mode: Various cleanups + add new device-wide .mode_valid hook (Ville) - atomic: Fix state leak when non-blocking commits fail (Leo) NOTE: IIRC, this was cross-picked to -fixes so it might fall out - crc: Allow polling on the data fd (Maarten) Driver Changes: - bridge/vga-dac: Add THS8134* support (Linus) - tinydrm: Various MIPI DBI improvements/cleanups (Noralf) - bridge/dw-mipi-dsi: Cleanups + use create_packet helper (Brian) - drm/sun4i: Add Display Engine frontend support (Maxime) - drm/sun4i: Add zpos support + increase num planes from 2 to 4 (Maxime) - various: Use drm_mode_get_hv_timing() to fill plane clip rectangle (Ville) - stm: Add 8-bit clut support, add dsi phy v1.31 support, +fixes (Phillipe) Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Cc: Chunming Zhou <david1.zhou@amd.com> Cc: Samuel Li <Samuel.Li@amd.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Noralf Trønnes <noralf@tronnes.org> Cc: Brian Norris <briannorris@chromium.org> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Cc: Christian König <christian.koenig@amd.com> Cc: Manasi Navare <manasi.d.navare@intel.com> Cc: Philippe Cornu <philippe.cornu@st.com> Cc: Leo (Sunpeng) Li <sunpeng.li@amd.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> * tag 'drm-misc-next-2018-02-13' of git://anongit.freedesktop.org/drm/drm-misc: (115 commits) drm/radeon: only enable swiotlb path when need v2 drm/amdgpu: only enable swiotlb alloc when need v2 drm: add func to get max iomem address v2 drm/vc4: Expose performance counters to userspace drm: Print the pid when debug logging an ioctl error. drm/stm: ltdc: remove non-alpha color formats on layer 2 for older hw drm/stm: ltdc: add non-alpha color formats drm/bridge/synopsys: dsi: Add 1.31 version support drm/bridge/synopsys: dsi: Add read feature drm/pl111: Support multiple endpoints on the CLCD drm/pl111: Support variants with broken VBLANK drm/pl111: Support variants with broken clock divider drm/pl111: Handle the Versatile RGB/BGR565 mode drm/pl111: Properly detect the ARM PL110 variants drm/panel: Add support for ARM Versatile panels drm/panel: Device tree bindings for ARM Versatile panels drm/bridge: Rename argument from crtc to bridge drm/crc: Add support for polling on the data fd. drm/sun4i: Use drm_mode_get_hv_timing() to populate plane clip rectangle drm/rcar-du: Use drm_mode_get_hv_timing() to populate plane clip rectangle ...
2018-02-05drm/i915: Always update the no_fbc_reason when disablingChris Wilson1-7/+10
Provide the reason why we call intel_fbc_deactivate() so that debugging issues with FBC being delayed is clearer. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20180125224122.27480-1-chris@chris-wilson.co.uk Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2018-01-29drm/i915: Provide a device level .mode_valid() hookVille Syrjälä1-2/+1
We never support certain mode flags etc. Reject those early on in the mode_config.mode_valid() hook. That allows us to remove some duplicated checks from the connector .mode_valid() hooks, and it guarantees that we never see those flags even from user mode as the mode_config.mode_valid() hooks gets executed for those as well. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171114183258.16976-11-ville.syrjala@linux.intel.com Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2018-01-24drm/i915: Use enum plane_id for frontbuffer trackingVille Syrjälä1-1/+1
Replace the ad-hoc plane indexing scheme used by the frontbuffer tracking with enum plane_id. The old video overlay not being part of the plane_id namespace will just be given the high bit. v2: Drop the unintended whitespace change (Chris) Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180123183343.9181-1-ville.syrjala@linux.intel.com Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
2018-01-17drm/i915: Do not WARN_ON with small framebuffers.Maarten Lankhorst1-3/+5
It's perfectly legal to create a fb with stride < 512, and one of the kms_plane_scaling subtests creates a very small fb. Downgrade the WARN_ON to a simple check check, and because this function is potentially called on every atomic update/pageflip, downgrade the other WARN_ON to a WARN_ON_ONCE, and do the right thing here. Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180116155331.75175-1-maarten.lankhorst@linux.intel.com Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2017-12-12drm/i915: make dsm struct resource centricMatthew Auld1-4/+9
Now that we are using struct resource to track the stolen region, it is more convenient if we track dsm in a resource as well. v2: check range_overflow when writing to 32b registers (Chris) pepper in some comments (Chris) v3: refit i915_stolen_to_dma() v4: kill ggtt->stolen_size v5: some more polish Signed-off-by: Matthew Auld <matthew.auld@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171211151822.20953-6-matthew.auld@intel.com
2017-11-21drm/i915: Nuke crtc->planeVille Syrjälä1-2/+2
Eliminate crtc->plane since it's pretty much a layering violation. We can always get the plane via crtc->primary if we actually need it. The only ugly thing left is plane_to_crtc_mapping[], but that's still needed by the pre-g4x watermark code. v2: Removed a misplaced comment change (Daniel) v3: Rebase due to fbc crtc->y usage removal v4: s/plane/i9xx_plane/ etc. (James) Cc: James Ausmus <james.ausmus@intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20171117191917.11506-9-ville.syrjala@linux.intel.com Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
2017-11-21drm/i915: Switch fbc over to for_each_new_intel_plane_in_state()Ville Syrjälä1-13/+10
Stop using the old for_each_intel_plane_in_state() type iteration macro and replace it with for_each_new_intel_plane_in_state(). And similarly replace drm_atomic_get_existing_crtc_state() with intel_atomic_get_new_crtc_state(). Switch over to intel_ types as well to make the code less cluttered. v2: s/plane/i9xx_plane/ etc. (James) Cc: James Ausmus <james.ausmus@intel.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20171117191917.11506-8-ville.syrjala@linux.intel.com Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
2017-11-21drm/i915: s/enum plane/enum i9xx_plane_id/Ville Syrjälä1-6/+6
Rename enum plane to enum i9xx_plane_id to make it clear that it only applies to pre-SKL platforms. enum i9xx_plane_id is a global identifier, whereas enum plane_id is per-pipe. We need the old global identifier to index the primary plane (and the pre-g4x sprite C if we ever expose it) registers on pre-SKL platforms. v2: Reorder patches v3: s/old_plane_id/i9xx_plane_id/ (Daniel) Pimp the commit message a bit Note that i9xx_plane_id doesn't apply to SKL+ v4: Rebase due to power domain handling in plane readout v5: Rebase due to crtc->dspaddr_offset removal v6: s/plane/i9xx_plane/ etc. (James) Cc: James Ausmus <james.ausmus@intel.com> Cc: Daniel Vetter <daniel@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20171117191917.11506-4-ville.syrjala@linux.intel.com Reviewed-by: James Ausmus <james.ausmus@intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
2017-10-18drm/i915: adjust get_crtc_fence_y_offset() to use base.y instead of crtc.yJuha-Pekka Heikkila1-6/+4
This is to use clipped y coordinate here. I left get_crtc_fence_y_offset() function itself in place as oneliner to maintain comment above it why this is done. Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1508270891-22186-6-git-send-email-juhapekka.heikkila@gmail.com
2017-10-18drm/i915: move adjusted_x/y from crtc to cache.Juha-Pekka Heikkila1-3/+8
Move adjusted_x/y from crtc to fbc cache. Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/1508270891-22186-2-git-send-email-juhapekka.heikkila@gmail.com [vsyrjala: Add rudimentary commit message] Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
2017-09-22drm/i915: Rename global i915 to i915_modparamsMichal Wajdeczko1-5/+6
Our global struct with params is named exactly the same way as new preferred name for the drm_i915_private function parameter. To avoid such name reuse lets use different name for the global. v5: pure rename v6: fix Credits-to: Coccinelle @@ identifier n; @@ ( - i915.n + i915_modparams.n ) Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Jani Nikula <jani.nikula@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Ville Syrjala <ville.syrjala@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Acked-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170919193846.38060-1-michal.wajdeczko@intel.com
2017-08-26drm/i915: Quietly cancel FBC activation if CRTC is turned off before workerChris Wilson1-3/+1
Since we use a worker to enable FBC on the CRTC, it is possible for the CRTC to be switched off before we run. In this case, the CRTC will not allow us to wait upon a vblank, so remove the DRM_ERROR as this is very much expected. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102410 Fixes: ca18d51d77eb ("drm/i915/fbc: wait for a vblank instead of 50ms when enabling") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170825150215.19236-1-chris@chris-wilson.co.uk Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-08-25drm/i915: Fix FBC cfb stride programming for non X-tiled FBPraveen Paneri1-0/+17
When FBC is enabled for linear, legacy Y-tiled and Yf-tiled surfaces on gen9, the cfb stride must be programmed by SW as cfb_stride = ceiling[(at least plane width in pixels)/ (32 * compression limit factor)] * 8 v2: Minor fix for a build error v3: Fixed subject, register name and platform check (Ville) v4: Added WA details in comment (Paulo) v5: - Read modified reg write to preserve other bit values (Paulo) - Store modified stride value in reg_params (Paulo) - Keep GLK out of the WA (Paulo) v6: - added additional field in reg_params for gen9_wa_cfb_stride (Paulo) - Used appropriate bit mask while writing the register (Paulo) v7 (from Paulo): - Fix coding style and spacing issues. - Mask the old values before writing. - Bikeshed comments and unnecessary checks. Signed-off-by: Praveen Paneri <praveen.paneri@intel.com> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1502389833-32621-1-git-send-email-praveen.paneri@intel.com
2017-08-11drm/i915/fbc: only update no_fbc_reason when activeDaniel Vetter1-1/+3
In our snb farm in CI we have plenty of underruns, but not enough stolen memory to enable fbc. Which means every time there's an underrun the no_fbc_reason swichtes to something that makes kms_frontbuffer_tracking fail instead of skip, adding massive amounts of additional noise to igt test runs. Make sure we don't try to disable fbc when it's off already. v2: Squash in additional WARN_ON suggestion from Chris. Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170811072327.4335-1-daniel.vetter@ffwll.ch
2017-06-06drm/i915: Fix 90/270 rotated coordinates for FBCVille Syrjälä1-12/+7
The clipped src coordinates have already been rotated by 270 degrees for when the plane rotation is 90/270 degrees, hence the FBC code should no longer swap the width and height. Cc: stable@vger.kernel.org Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Fixes: b63a16f6cd89 ("drm/i915: Compute display surface offset in the plane check hook for SKL+") Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170331180056.14086-4-ville.syrjala@linux.intel.com Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Tested-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
2017-05-30Merge tag 'drm-intel-next-2017-05-29' of git://anongit.freedesktop.org/git/drm-intel into drm-nextDave Airlie1-3/+1
More stuff for 4.13: - skl+ wm fixes from Mahesh Kumar - some refactor and tests for i915_sw_fence (Chris) - tune execlist/scheduler code (Chris) - g4x,g33 gpu reset improvements (Chris, Mika) - guc code cleanup (Michal Wajdeczko, Michał Winiarski) - dp aux backlight improvements (Puthikorn Voravootivat) - buffer based guc/host communication (Michal Wajdeczko) * tag 'drm-intel-next-2017-05-29' of git://anongit.freedesktop.org/git/drm-intel: (253 commits) drm/i915: Update DRIVER_DATE to 20170529 drm/i915: Keep the forcewake timer alive for 1ms past the most recent use drm/i915/guc: capture GuC logs if FW fails to load drm/i915/guc: Introduce buffer based cmd transport drm/i915/guc: Disable send function on fini drm: Add definition for eDP backlight frequency drm/i915: Drop AUX backlight enable check for backlight control drm/i915: Consolidate #ifdef CONFIG_INTEL_IOMMU drm/i915: Only GGTT vma may be pinned and prevent shrinking drm/i915: Serialize GTT/Aperture accesses on BXT drm/i915: Convert i915_gem_object_ops->flags values to use BIT() drm/i915/selftests: Silence compiler warning in igt_ctx_exec drm/i915/guc: Skip port assign on first iteration of GuC dequeue drm/i915: Remove misleading comment in request_alloc drm/i915/g33: Improve reset reliability Revert "drm/i915: Restore lost "Initialized i915" welcome message" drm/i915/huc: Update GLK HuC version drm/i915: Check for allocation failure drm/i915/guc: Remove action status and statistics from debugfs drm/i915/g4x: Improve gpu reset reliability ...
2017-05-25drm/i915: Consolidate #ifdef CONFIG_INTEL_IOMMUChris Wilson1-3/+1
We depend on intel_iommu_gfx_mapped for various workarounds, but that is only available under an #ifdef CONFIG_INTEL_IOMMU. Refactor all the cut-and-paste ifdefs to a common routine. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20170525121612.2190-1-chris@chris-wilson.co.uk Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
2017-05-22drm: Add DRM_MODE_ROTATE_ and DRM_MODE_REFLECT_ to UAPIRobert Foss1-1/+1
Add DRM_MODE_ROTATE_ and DRM_MODE_REFLECT_ defines to the UAPI as a convenience. Ideally the DRM_ROTATE_ and DRM_REFLECT_ property ids are looked up through the atomic API, but realizing that userspace is likely to take shortcuts and assume that the enum values are what is sent over the wire. As a result these defines are provided purely as a convenience to userspace applications. Changes since v3: - Switched away from past tense in comments - Add define name change to previously mis-spelled DRM_REFLECT_X comment - Improved the comment for the DRM_MODE_REFLECT_<axis> comment Changes since v2: - Changed define prefix from DRM_MODE_PROP_ to DRM_MODE_ - Fix compilation errors - Changed comment formatting - Deduplicated comment lines - Clarified DRM_MODE_PROP_REFLECT_ comment Changes since v1: - Moved defines from drm.h to drm_mode.h - Changed define prefix from DRM_ to DRM_MODE_PROP_ - Updated uses of the defines to the new prefix - Removed include from drm_rect.c - Stopped using the BIT() macro Signed-off-by: Robert Foss <robert.foss@collabora.com> Reviewed-by: Emil Velikov <emil.velikov@collabora.com> Reviewed-by: Sinclair Yeh <syeh@vmware.com> Acked-by: Liviu Dudau <Liviu.Dudau@arm.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20170519205017.23307-2-robert.foss@collabora.com
2017-03-13drm/i915: Use new atomic iterator macros in fbcMaarten Lankhorst1-1/+1
Use for_each_new_plane_in_state, only the new state is needed. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1489071125-917-3-git-send-email-maarten.lankhorst@linux.intel.com Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-02-23drm/i915: Suppress fbc suggestion to increase stolen if disabledChris Wilson1-1/+2
If the reserved region of memory has not been setup (most probably because it has been limited by hardware or virtualisation), don't tell the user to try and increase the amount of memory reserved for graphics. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170223122037.16174-1-chris@chris-wilson.co.uk eviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2017-02-08drm/i915: Start moving the cdclk stuff into a distinct state structureVille Syrjälä1-1/+1
Introduce intel_cdclk state which for now will track the cdclk frequency, the vco frequency and the reference frequency (not sure we want the last one, but I put it there anyway). We'll also make the .get_cdclk() function fill out this state structure rather than just returning the current cdclk frequency. One immediate benefit is that calling .get_cdclk() will no longer clobber state stored under dev_priv unless ex[plicitly told to do so. Previously it clobbered the vco and reference clocks stored there on some platforms. We'll expand the use of this structure to actually precomputing the state and whatnot later. v2: Constify intel_cdclk_state_compare() v3: Document intel_cdclk_state_compare() v4: Deal with i945gm_get_cdclk() Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170207183345.19763-1-ville.syrjala@linux.intel.com
2017-02-08drm/i915: Store the pipe pixel rate in the crtc stateVille Syrjälä1-2/+1
Rather than recomputing the pipe pixel rate on demand everywhere, let's just stick the precomputed value into the crtc state. v2: Rebase due to min_pixclk[] code movement Document the new pixel_rate struct member (Ander) Combine vlv/chv with bdw+ in intel_modeset_readout_hw_state() v3: Fix typos in commit message (David) Cc: Ander Conselvan De Oliveira <conselvan2@gmail.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170126195031.32343-1-ville.syrjala@linux.intel.com
2017-01-24drm/i915: Introduce IS_GEN9_BC for Skylake and Kabylake.Rodrigo Vivi1-2/+1
Along with GLK it was introduced the .is_lp and IS_GEN9_LP. So, following the same simplification standard we can put Skylake and Kabylake under the same bucket for most of the things. So let's add the IS_GEN9_BC for "Big Core" (non Atom based platforms). The i915_drv.c was let out of this patch on purpose because that is really a decision per platform, just like other cases where IS_KABYLAKE is different from IS_SKYLAKE. v2: fix conflict with IS_LP and 3 new cases for this big core bucket: - intel_ddi.c: intel_ddi_get_link_dpll - intel_fbc.c: find_compression_threshold - i915_gem_gtt.c: gtt_write_workarounds Cc: Anusha Srivatsa <anusha.srivatsa@intel.com> Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Cc: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by: Ander Conselvan de Oliveira <conselvan2@gmail.com> Acked-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1485196357-30599-2-git-send-email-rodrigo.vivi@intel.com
2017-01-19drm/i915: Track pinned vma in intel_plane_stateChris Wilson1-32/+20
With atomic plane states we are able to track an allocation right from preparation, during use and through to the final free after being swapped out for a new plane. We can couple the VMA we pin for the framebuffer (and its rotation) to this lifetime and avoid all the clumsy lookups in between. v2: Remove residual vma on plane cleanup (Chris) v3: Add a description for the vma destruction in intel_plane_destroy_state (Maarten) References: https://bugs.freedesktop.org/show_bug.cgi?id=98829 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170116152131.18089-1-chris@chris-wilson.co.uk Acked-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2017-01-12drm/i915: Remove useless casts to intel_plane_stateMaarten Lankhorst1-1/+1
The visible member used to be in intel_plane_state->visible, but has been moved to drm_plane_state->visible. In the conversion some casts were left in that are now useless. to_intel_plane_state(x)->base.visible is the same as x->visible, so use the latter to clear up the code a little. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1484214225-30328-1-git-send-email-maarten.lankhorst@linux.intel.com Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
2017-01-04drm/i915: enable FBC on gen9+ tooPaulo Zanoni1-1/+1
Gen9+ platforms have been seeing a lot of screen flickerings and underruns, so I never felt comfortable in enabling FBC on these platforms since I didn't want to throw yet another feature on top of the already complex problem. We now have code that automatically disables FBC if we ever get an underrun, and the screen flickerings seem to be mostly gone, so it may be a good time to try to finally enable FBC by default on the newer platforms. Besides, BDW FBC has been working fine over the year, which gives me a little more confidence now. For a little more information, please refer to commit a98ee79317b4 ("drm/i915/fbc: enable FBC by default on HSW and BDW"). v2: Enable not only on SKL, but for everything new (Daniel). v3: Rebase after the intel_sanitize_fbc_option() change. v4: New rebase after 8 months, drop expired R-B tags. Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1482495839-27041-1-git-send-email-paulo.r.zanoni@intel.com
2017-01-04Merge tag 'drm-misc-next-2016-12-30' of git://anongit.freedesktop.org/git/drm-misc into drm-intel-next-queuedDaniel Vetter1-7/+7
Directly merge drm-misc into drm-intel since Dave is on vacation and we need the various drm-misc patches (fb format rework, drm mm fixes, selftest framework and others). Also pulled back -rc2 in first to resync with drm-intel-fixes and make sure I can reuse the exact rerere solutions from drm-tip for safety, and because I'm lazy. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2016-12-20drm/i915: fully apply WaSkipStolenMemoryFirstPagePaulo Zanoni1-1/+1
Don't even tell the mm allocator to handle the first page of stolen on the affected platforms. This means that we won't inherit the FB in case the BIOS decides to put it at the start of stolen. But the BIOS should not be putting it at the start of stolen since it's going to get corrupted. I suppose the bug here is that some pixels at the very top of the screen will be corrupted, so it's not exactly easy to notice. We have confirmation that the first page of stolen does actually get corrupted, so I really think we should do this in order to avoid any possible future headaches, even if that means losing BIOS framebuffer inheritance. Let's not use the HW in a way it's not supposed to be used. Notice that now ggtt->stolen_usable_size won't reflect the ending address of the stolen usable range anymore, so we have to fix the places that rely on this. To simplify, we'll just use U64_MAX. v2: don't even put the first page on the mm (Chris) v3: drm_mm_init() takes size instead of end as argument (Ville) v4: add a comment explaining the reserved ranges (Chris) use 0 for start and U64_MAX for end when possible (Chris) Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94605 Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/1481808235-27607-1-git-send-email-paulo.r.zanoni@intel.com
2016-12-15drm/i915: Store a pointer to the pixel format info for fbcVille Syrjälä1-7/+7
Rather than store the pixel format and look up the format info as needed, let's just store a pointer to the format info directly and speed up our lookups. Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: intel-gfx@lists.freedesktop.org Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1479498793-31021-29-git-send-email-ville.syrjala@linux.intel.com Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2016-11-14drm/i915/fbc: convert intel_fbc.c to use INTEL_GEN()Paulo Zanoni1-13/+13
Because it's shorter, easier to read, newer and cooler. And I don't think anybody else has pending FBC patches right now, so the conflicts should be minimal. Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/1478883461-20201-8-git-send-email-paulo.r.zanoni@intel.com
2016-11-14drm/i915/fbc: use drm_atomic_get_existing_crtc_state when appropriatePaulo Zanoni1-11/+4
Use drm_atomic_get_existing_crtc_state() instead of looping through the CRTC states and checking if the FBC CRTC is there. Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/1478883461-20201-6-git-send-email-paulo.r.zanoni@intel.com
2016-11-14drm/i915/fbc: inline intel_fbc_can_choose()Paulo Zanoni1-22/+11
It only has two checks now, so it makes sense to just move the code to the caller. Also take this opportunity to make no_fbc_reason make more sense: now we'll only list "no suitable CRTC for FBC" instead of maybe giving a reason why the last CRTC we checked was not selected, and we'll more consistently set the reason (e.g., if no primary planes are visible). Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/1478883461-20201-5-git-send-email-paulo.r.zanoni@intel.com
2016-11-14drm/i915/fbc: extract intel_fbc_can_enable()Paulo Zanoni1-2/+12
Extract that part of the code to a new function and call this function only once during intel_fbc_choose_crtc() instead of once per plane. Those checks are independent from planes/CRTCs. Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/1478883461-20201-4-git-send-email-paulo.r.zanoni@intel.com
2016-11-14drm/i915/fbc: replace a loop with drm_atomic_get_existing_crtc_state()Paulo Zanoni1-10/+7
Much simpler. Thanks to Ville for pointing this. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1478883461-20201-3-git-send-email-paulo.r.zanoni@intel.com
2016-11-14drm/i915/fbc: move the intel_fbc_can_choose() call out of the loopPaulo Zanoni1-3/+3
We can just call it earlier, so do it. The goal of the loop is to get the plane's CRTC state, and we don't need it in order to call intel_fbc_can_choose(). Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/1478883461-20201-2-git-send-email-paulo.r.zanoni@intel.com
2016-11-01drm/i915: Pass intel_crtc to intel_crtc_active()Ville Syrjälä1-1/+1
Unify our approach to things by passing around intel_crtc instead of drm_crtc. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1477946245-14134-4-git-send-email-ville.syrjala@linux.intel.com Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
2016-10-25Merge remote-tracking branch 'airlied/drm-next' into drm-intel-next-queuedDaniel Vetter1-1/+1
Backmerge because Chris Wilson needs the very latest&greates of Gustavo Padovan's sync_file work, specifically the refcounting changes from: commit 30cd85dd6edc86ea8d8589efb813f1fad41ef233 Author: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Date: Wed Oct 19 15:48:32 2016 -0200 dma-buf/sync_file: hold reference to fence when creating sync_file Also good to sync in general since git tends to get confused with the cherry-picking going on. Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2016-10-25Merge tag 'drm-intel-next-2016-10-24' of git://anongit.freedesktop.org/drm-intel into drm-nextDave Airlie1-0/+67
- first slice of the gvt device model (Zhenyu et al) - compression support for gpu error states (Chris) - sunset clause on gpu errors resulting in dmesg noise telling users how to report them - .rodata diet from Tvrtko - switch over lots of macros to only take dev_priv (Tvrtko) - underrun suppression for dp link training (Ville) - lspcon (hmdi 2.0 on skl/bxt) support from Shashank Sharma, polish from Jani - gen9 wm fixes from Paulo&Lyude - updated ddi programming for kbl (Rodrigo) - respect alternate aux/ddc pins (from vbt) for all ddi ports (Ville) * tag 'drm-intel-next-2016-10-24' of git://anongit.freedesktop.org/drm-intel: (227 commits) drm/i915: Update DRIVER_DATE to 20161024 drm/i915: Stop setting SNB min-freq-table 0 on powersave setup drm/i915/dp: add lane_count check in intel_dp_check_link_status drm/i915: Fix whitespace issues drm/i915: Clean up DDI DDC/AUX CH sanitation drm/i915: Respect alternate_ddc_pin for all DDI ports drm/i915: Respect alternate_aux_channel for all DDI ports drm/i915/gen9: Remove WaEnableYV12BugFixInHalfSliceChicken7 drm/i915: KBL - Recommended buffer translation programming for DisplayPort drm/i915: Move down skl/kbl ddi iboost and n_edp_entires fixup drm/i915: Add a sunset clause to GPU hang logging drm/i915: Stop reporting error details in dmesg as well as the error-state drm/i915/gvt: do not ignore return value of create_scratch_page drm/i915/gvt: fix spare warnings on odd constant _Bool cast drm/i915/gvt: mark symbols static where possible drm/i915/gvt: fix sparse warnings on different address spaces drm/i915/gvt: properly access enabled intel_engine_cs drm/i915/gvt: Remove defunct vmap_batch() drm/i915/gvt: Use common mapping routines for shadow_bb object drm/i915/gvt: Use common mapping routines for indirect_ctx object ...
2016-10-24drm/i915/fbc: fix CFB size calculation for gen8+Paulo Zanoni1-1/+3
Broadwell and newer actually compress up to 2560 lines instead of 2048 (as documented in the FBC_CTL page). If we don't take this into consideration we end up reserving too little stolen memory for the CFB, so we may allocate something else (such as a ring) right after what we reserved, and the hardware will overwrite it with the contents of the CFB when FBC is active, causing GPU hangs. Another possibility is that the CFB may be allocated at the very end of the available space, so the CFB will overlap the reserved stolen area, leading to FIFO underruns. This bug has always been a problem on BDW (the only affected platform where FBC is enabled by default), but it's much easier to reproduce since the following commit: commit c58b735fc762e891481e92af7124b85cb0a51fce Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Thu Aug 18 17:16:57 2016 +0100 drm/i915: Allocate rings from stolen Of course, you can only reproduce the bug if your screen is taller than 2048 lines. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98213 Fixes: a98ee79317b4 ("drm/i915/fbc: enable FBC by default on HSW and BDW") Cc: <stable@vger.kernel.org> # v4.6+ Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1477065346-13736-1-git-send-email-paulo.r.zanoni@intel.com
2016-10-21drm: Add drm_rotation_90_or_270()Ville Syrjälä1-1/+1
We have intel_rotation_90_or_270() in i915 to check if the rotation is 90 or 270 degrees. Similar checks are elsewhere in drm, so let's move the helper into a central place and use it everwhere. v2: Drop the BIT() Convert all new intel_rotation_90_or_270() calls Deal with superfluous code shuffling Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v1) Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1474907460-10717-2-git-send-email-ville.syrjala@linux.intel.com
2016-09-22drm/i915/fbc: disable FBC on FIFO underrunsPaulo Zanoni1-0/+67
Ever since I started working on FBC I was already aware that FBC can really amplify the FIFO underrun symptoms. On systems where FIFO underruns were harmless error messages, enabling FBC would cause the underruns to give black screens. We recently tried to enable FBC on Haswell and got reports of a system that would hang after some hours of uptime, and the first bad commit was the one that enabled FBC. We also observed that this system had FIFO underrun error messages on its dmesg. Although we don't have any evidence that fixing the underruns would solve the bug and make FBC work properly on this machine, IMHO it's better if we minimize the amount of possible problems by just giving up FBC whenever we detect an underrun. v2: New version, different implementation and commit message. v3: Clarify the fact that we run from an IRQ handler (Chris). v4: Also add the underrun_detected check at can_choose() to avoid misleading dmesg messages (DK). v5: Fix Engrish, use READ_ONCE on the unlocked read (Chris). Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Lyude <cpaul@redhat.com> Cc: stevenhoneyman@gmail.com <stevenhoneyman@gmail.com> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1473773937-19758-1-git-send-email-paulo.r.zanoni@intel.com
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