linux/drivers/gpu/drm
Chris Wilson 9b9ed30936 drm/i915: Remove forcewake dance from seqno/irq barrier on legacy gen6+
In order to ensure seqno/irq coherency, we currently read a ring register.
The mmio transaction following the interrupt delays the inspection of
the seqno long enough for the MI_STORE_DWORD_IMM to update the CPU
cache. However, it is only the memory timing that is important for the
purposes of the delay, we do not need nor desire the extra forcewake.

v3: Update commentary

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com> [v2]
Link: http://patchwork.freedesktop.org/patch/msgid/1460195877-20520-1-git-send-email-chris@chris-wilson.co.uk
2016-04-09 12:08:53 +01:00
..
amd drm/amdkfd: uninitialized variable in dbgdev_wave_control_set_registers() 2016-03-15 14:09:37 +02:00
arm drm: Add support for ARM's HDLCD controller. 2016-02-10 13:44:16 +00:00
armada drm/armada: Remove NULL open/pre/postclose hooks 2016-01-25 19:35:05 +01:00
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: remove optional dummy crtc mode_fixup function. 2016-03-04 18:09:51 +01:00
bochs drm/bochs: removed optional dummy crtc mode_fixup function. 2016-03-04 18:16:51 +01:00
bridge drm/bridge: removed dummy mode_fixup function from dw-hdmi. 2016-02-11 09:24:01 +01:00
cirrus drm/cirrus: removed optional dummy crtc mode_fixup function. 2016-03-04 17:54:12 +01:00
etnaviv drm: etnaviv: clean up submit_bo() 2016-03-07 15:37:01 +01:00
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 drm/gma: removed optional dummy crtc mode_fixup function. 2016-03-04 17:58:34 +01:00
i2c Merge drm-fixes into drm-next. 2016-03-14 09:46:02 +10:00
i810
i915 drm/i915: Remove forcewake dance from seqno/irq barrier on legacy gen6+ 2016-04-09 12:08:53 +01:00
imx Merge drm-fixes into drm-next. 2016-03-14 09:46:02 +10:00
mga
mgag200 drm/mgag200: removed optional dummy crtc mode_fixup function. 2016-03-04 17:54:17 +01:00
msm 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
nouveau nouveau: fix nv40_perfctr_next() cleanup regression 2016-03-16 15:08:43 +10:00
omapdrm 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
panel drm/fsl-dcu: use mode flags for hsync/vsync polarity 2016-02-25 16:13:16 -08:00
qxl Merge drm-fixes into drm-next. 2016-03-14 09:46:02 +10:00
r128
radeon Merge drm-fixes into drm-next. 2016-03-14 09:46:02 +10:00
rcar-du drm/rcar-du: removed optional dummy crtc mode_fixup function. 2016-03-04 17:58:47 +01:00
rockchip imx-drm vblank IRQ control, fence support, and of endpoint helpers 2016-03-02 17:52:51 +10:00
savage
shmobile drm/shmobile: removed optional dummy crtc mode_fixup function. 2016-03-04 17:59:44 +01:00
sis
sti drm/sti: removed optional dummy crtc mode_fixup function. 2016-03-04 18:09:20 +01:00
tdfx
tegra drm/tegra: drop unused variable. 2016-02-09 11:17:37 +10:00
tilcdc drm/tilcdc: Use devm_kzalloc() and devm_kcalloc() for private data 2016-02-25 16:39:47 +02:00
ttm Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2016-01-17 13:40:25 -08:00
udl drm/udl: removed optional dummy crtc mode_fixup function. 2016-03-04 17:54:22 +01:00
vc4 drm/vc4: Recognize a more specific compatible string for V3D. 2016-03-13 18:54:24 -07:00
vgem
via
virtio drm/virtio: removed optional dummy crtc mode_fixup function. 2016-03-04 18:15:38 +01:00
vmwgfx Merge drm-fixes into drm-next. 2016-03-14 09:46:02 +10:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic_helper.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_atomic.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_auth.c
drm_bridge.c
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: Add a drm_aux-dev module for reading/writing dpcd registers. 2016-02-12 14:22:40 +01:00
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.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_cma_helper: remove duplicate const from drm_fb_cma_alloc 2016-01-20 13:55:57 +01:00
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: Nuke vblank event file cleanup code 2016-02-08 09:55:47 +01:00
drm_gem_cma_helper.c
drm_gem.c
drm_global.c
drm_hashtab.c tree wide: use kvfree() than conditional kfree()/vfree() 2016-01-22 17:02:18 -08:00
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_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: prime: Honour O_RDWR during prime-handle-to-fd 2016-02-09 09:25:12 +01:00
drm_probe_helper.c
drm_rect.c
drm_scatter.c
drm_sysfs.c drm/sysfs: use kobj_to_dev() 2016-01-13 16:43:07 +01:00
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