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5bc6abe767
linux-next/drivers/gpu/drm
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Lyude 5bc6abe767 drm/i915/gen6+: Interpret mailbox error flags 
In order to add proper support for the SAGV, we need to be able to know
what the cause of a failure to change the SAGV through the pcode mailbox
was. The reasoning for this is that some very early pre-release Skylake
machines don't actually allow you to control the SAGV on them, and
indicate an invalid mailbox command was sent.

This also might come in handy in the future for debugging.

Changes since v1:
 - Add functions for interpreting gen6 mailbox error codes along with
   gen7+ error codes, and actually interpret those codes properly
 - Renamed patch to reflect new behavior

Signed-off-by: Lyude <cpaul@redhat.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1471463761-26796-2-git-send-email-cpaul@redhat.com
[mlankhorst: -ENOSYS -> -ENXIO for checkpatch]

(cherry picked from commit 87660502f1)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-08-22 16:07:29 +03:00
..
amd drm/amdgpu: Change GART offset to 64-bit 2016-08-16 10:27:09 -04:00
arc drm/arc: Remove redundant dev_err call in arcpgu_load() 2016-07-19 15:33:50 -04:00
arm drm/arm: mali-dp: Fix error return code in malidp_bind() 2016-07-28 12:59:56 +02:00
armada Merge tag 'drm-for-v4.8' of git://people.freedesktop.org/~airlied/linux 2016-08-01 21:44:08 -04:00
ast Merge remote-tracking branch 'airlied/drm-next' into topic/drm-misc 2016-07-19 09:27:29 +02:00
atmel-hlcdc Merge remote-tracking branch 'airlied/drm-next' into topic/drm-misc 2016-07-19 09:27:29 +02:00
bochs Merge remote-tracking branch 'airlied/drm-next' into topic/drm-misc 2016-07-19 09:27:29 +02:00
bridge Merge tag 'topic/drm-misc-2016-07-28' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-07-30 05:26:07 +10:00
cirrus drm/cirrus: Fix NULL pointer dereference when registering the fbdev 2016-08-09 13:01:47 +10:00
etnaviv drm/etnaviv: take GPU lock later in the submit process 2016-08-15 14:00:40 +02:00
exynos Merge tag 'drm-for-v4.8-zpos' of git://people.freedesktop.org/~airlied/linux 2016-08-07 16:35:08 -07:00
fsl-dcu Merge tag 'topic/drm-misc-2016-07-22' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-07-27 10:33:08 +10:00
gma500 drm/gma500: remove unnecessary stub for fb_ioctl() 2016-07-28 10:04:03 +02:00
hisilicon drm/hisilicon: Fix ADE vblank on/off handling 2016-07-12 14:17:03 +02:00
i2c drm/i2c: adv7511: Move to bridge folder 2016-07-13 14:24:35 +05:30
i810
i915 drm/i915/gen6+: Interpret mailbox error flags 2016-08-22 16:07:29 +03:00
imx imx-drm ldb mode set fix 2016-07-30 05:45:30 +10:00
mediatek drm/mediatek: add ARM_SMCCC dependency 2016-08-11 08:42:01 +02:00
mga
mgag200 drm/mgag200: Delete an unnecessary check before drm_gem_object_unreference_unlocked() 2016-07-22 11:23:39 -04:00
msm dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
nouveau Merge branch 'drm-next-4.8' of git://people.freedesktop.org/~agd5f/linux into drm-next 2016-08-08 16:45:33 +10:00
omapdrm Merge tag 'drm-for-v4.8' of git://people.freedesktop.org/~airlied/linux 2016-08-01 21:44:08 -04:00
panel drm/panel: simple: Add support for Starry KR122EA0SRA panel 2016-07-11 14:30:43 +02:00
qxl drm/qxl: Delete an unnecessary check before drm_gem_object_unreference_unlocked() 2016-07-22 11:23:39 -04:00
r128
radeon Revert "drm/radeon: work around lack of upstream ACPI support for D3cold" 2016-08-09 00:21:45 -04:00
rcar-du drm: rcar-du: Link HDMI encoder with bridge 2016-08-08 15:27:11 +10:00
rockchip dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
savage
shmobile drm/shmobile: make fbdev support really optional 2016-07-18 09:11:37 +02:00
sis drm: Move master pointer from drm_minor to drm_device 2016-06-21 21:43:24 +02:00
sti Merge branch 'generic-zpos-v8' of http://git.linaro.org/people/benjamin.gaignard/kernel into drm-next 2016-08-03 08:40:24 +10:00
sun4i Merge tag 'topic/drm-misc-2016-07-22' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-07-27 10:33:08 +10:00
tdfx
tegra Merge remote-tracking branch 'airlied/drm-next' into topic/drm-misc 2016-07-19 09:27:29 +02:00
tilcdc drm/tilcdc: make fbdev support really optional 2016-07-18 09:11:38 +02:00
ttm Merge branch 'drm-next-4.8' of git://people.freedesktop.org/~agd5f/linux into drm-next 2016-08-08 16:45:33 +10:00
udl drm/udl: make fbdev support really optional 2016-07-18 09:11:40 +02:00
vc4 Merge remote-tracking branch 'airlied/drm-next' into topic/drm-misc 2016-07-19 09:27:29 +02:00
vgem drm/vgem: Fix non static symbol warning 2016-07-19 15:01:52 +02:00
via drm: Move master pointer from drm_minor to drm_device 2016-06-21 21:43:24 +02:00
virtio drm/virtio: Fix non static symbol warning 2016-07-19 15:44:10 -04:00
vmwgfx Merge tag 'topic/drm-misc-2016-07-28' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-07-30 05:26:07 +10:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic_helper.c drm: add generic zpos property 2016-07-29 09:59:30 +02:00
drm_atomic.c drm: add generic zpos property 2016-07-29 09:59:30 +02:00
drm_auth.c drm: document drm_auth.c 2016-06-21 22:10:55 +02:00
drm_blend.c drm: add generic zpos property 2016-07-29 09:59:30 +02:00
drm_bridge.c
drm_bufs.c drm: Move master pointer from drm_minor to drm_device 2016-06-21 21:43:24 +02:00
drm_cache.c drm: Restore double clflush on the last partial cacheline 2016-07-12 15:57:13 +02:00
drm_context.c
drm_crtc_helper.c Linux 4.7-rc5 2016-07-02 15:56:01 +10:00
drm_crtc_internal.h drm: add generic zpos property 2016-07-29 09:59:30 +02:00
drm_crtc.c drm: Paper over locking inversion after registration rework 2016-08-08 16:08:25 +10:00
drm_debugfs.c drm: Nuke legacy maps debugfs files 2016-06-16 10:16:11 +02:00
drm_dma.c
drm_dp_aux_dev.c drm_aux-dev: fix error handling in drm_dp_aux_dev_init() 2016-07-12 14:10:57 +02:00
drm_dp_dual_mode_helper.c
drm_dp_helper.c drm/dp: Add drm_dp_psr_setup_time() 2016-08-03 07:06:28 +10:00
drm_dp_mst_topology.c drm/dp-mst: Missing kernel doc 2016-07-19 10:31:53 +02:00
drm_drv.c drm: Do a full device unregister when unplugging 2016-07-12 13:01:49 +02:00
drm_edid_load.c
drm_edid.c drm/edid: Set 8 bpc color depth for displays with "DFP 1.x compliant TMDS". 2016-08-09 08:56:04 +10:00
drm_encoder_slave.c
drm_fb_cma_helper.c Merge branch 'for-next' of http://git.agner.ch/git/linux-drm-fsl-dcu into drm-next 2016-07-02 16:21:35 +10:00
drm_fb_helper.c Revert "drm/fb-helper: Reduce READ_ONCE(master) to lockless_dereference" 2016-08-18 15:36:13 +02:00
drm_flip_work.c
drm_fops.c drm: Clean up drm_crtc.h 2016-06-21 21:43:28 +02:00
drm_fourcc.c drm: Move format-related helpers to drm_fourcc.c 2016-06-09 11:58:50 +02:00
drm_gem_cma_helper.c
drm_gem.c Merge tag 'drm-for-v4.8' of git://people.freedesktop.org/~airlied/linux 2016-08-01 21:44:08 -04:00
drm_global.c
drm_hashtab.c
drm_info.c drm: Extract drm_is_current_master 2016-06-21 21:58:12 +02:00
drm_internal.h drm: Nuke SET_UNIQUE ioctl 2016-06-21 21:43:46 +02:00
drm_ioc32.c
drm_ioctl.c drm: Don't overwrite user ioctl arg unless requested 2016-07-14 10:12:50 +02:00
drm_irq.c drm: Extract&Document drm_irq.h 2016-07-19 10:29:47 +02:00
drm_kms_helper_common.c
drm_legacy.h drm: Hide hw.lock cleanup in filp->release better 2016-06-16 10:16:37 +02:00
drm_lock.c drm: Extract drm_is_current_master 2016-06-21 21:58:12 +02:00
drm_memory.c drm: Fix broken use of _PAGE_NO_CACHE on powerpc 2016-07-12 13:20:39 +02:00
drm_mipi_dsi.c drm/dsi: Make set_tear_scanline command consistent 2016-07-12 13:19:26 +02:00
drm_mm.c
drm_modes.c Merge tag 'topic/drm-misc-2016-06-07' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-06-09 11:19:28 +10:00
drm_modeset_lock.c
drm_of.c
drm_panel.c
drm_pci.c drm: Nuke SET_UNIQUE ioctl 2016-06-21 21:43:46 +02:00
drm_plane_helper.c drm: Deal with rotation in drm_plane_helper_check_update() 2016-06-17 16:41:25 +02:00
drm_platform.c drm: Lobotomize set_busid nonsense for !pci drivers 2016-06-21 21:56:23 +02:00
drm_prime.c drm/prime: fix error path deadlock fail 2016-06-13 17:32:18 +02:00
drm_probe_helper.c
drm_rect.c
drm_scatter.c drm: Fix broken use of _PAGE_NO_CACHE on powerpc 2016-07-12 13:20:39 +02:00
drm_simple_kms_helper.c drm: Deal with rotation in drm_plane_helper_check_update() 2016-06-17 16:41:25 +02:00
drm_sysfs.c drm: Remove dev_pm_ops from drm_class 2016-06-09 08:43:25 +02:00
drm_trace_points.c
drm_trace.h
drm_vm.c drm: Fix broken use of _PAGE_NO_CACHE on powerpc 2016-07-12 13:20:39 +02:00
drm_vma_manager.c
Kconfig
Makefile drm: add generic zpos property 2016-07-29 09:59:30 +02:00