Ard Biesheuvel
f9a0a08d9c
drm: disable uncached DMA optimization for ARM and arm64 ...
[ Upstream commit e02f5c1bb2283cfcee68f2f0feddcc06150f13aa ]
The DRM driver stack is designed to work with cache coherent devices
only, but permits an optimization to be enabled in some cases, where
for some buffers, both the CPU and the GPU use uncached mappings,
removing the need for DMA snooping and allocation in the CPU caches.
The use of uncached GPU mappings relies on the correct implementation
of the PCIe NoSnoop TLP attribute by the platform, otherwise the GPU
will use cached mappings nonetheless. On x86 platforms, this does not
seem to matter, as uncached CPU mappings will snoop the caches in any
case. However, on ARM and arm64, enabling this optimization on a
platform where NoSnoop is ignored results in loss of coherency, which
breaks correct operation of the device. Since we have no way of
detecting whether NoSnoop works or not, just disable this
optimization entirely for ARM and arm64.
Cc: Christian Koenig <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: David Zhou <David1.Zhou@amd.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: Junwei Zhang <Jerry.Zhang@amd.com>
Cc: Michel Daenzer <michel.daenzer@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: amd-gfx list <amd-gfx@lists.freedesktop.org>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
Reported-by: Carsten Haitzler <Carsten.Haitzler@arm.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.kernel.org/patch/10778815/
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-03-13 14:02:40 -07:00
drm for v4.18-rc1
2018-06-06 08:16:33 -07:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
drm/tinydrm: Fix doc build warnings
2018-07-11 22:24:02 +02:00
drm/ttm: Add ttm_set_pages_wc and ttm_set_pages_uc helper
2018-08-01 17:23:05 -05:00
drm/amdgpu: Add vega20 to asic_type enum.
2018-05-17 10:13:09 -05:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
drm: Get ref on CRTC commit object when waiting for flip_done
2018-10-18 14:23:13 -04:00
drm/crtc: Add a generic infrastructure to fake VBLANK events
2018-07-07 07:53:09 +02:00
ALSA: hda: Make audio component support more generic
2018-07-17 22:25:48 +02:00
drm: Add drm_object lease infrastructure [v5]
2017-10-25 16:31:29 +10:00
drm/blend: Add a generic alpha property
2018-04-16 21:17:29 +02:00
drm/bridge: Move the struct drm_bridge member kerneldoc inline.
2018-06-21 14:00:06 -07:00
drm: disable uncached DMA optimization for ARM and arm64
2019-03-13 14:02:40 -07:00
drm/cma-helper: Fix crash in fbdev error path
2018-10-02 13:03:34 +02:00
drm: Introduce drm_color_lut_size()
2018-03-16 15:44:01 +02:00
drm: drop _mode_ from remaining connector functions
2018-07-13 18:40:27 +02:00
drm/doc: use inline kerneldoc style for drm_crtc_state
2018-07-13 18:40:28 +02:00
drm: Allow determining if current task is output poll worker
2018-02-16 22:30:06 +01:00
drm/debugfs: Add kerneldoc
2017-03-24 09:36:06 +01:00
drm/crc: Only report a single overflow when a CRC fd is opened
2018-07-06 14:57:03 +02:00
drm: Begin an API for in-kernel clients
2018-07-10 14:51:37 +02:00
drm: Fix LSPCON kernel-doc
2016-10-19 18:20:40 +03:00
drm: add support for DisplayPort CEC-Tunneling-over-AUX
2018-07-13 17:58:19 +03:00
drm/dp/mst: Sideband message transaction to power up/down nodes
2017-09-11 16:03:57 +03:00
drm: fix drm_drv_uses_atomic_modeset on non modesetting drivers.
2018-09-18 11:17:06 +02:00
drm/edid: VSDB yCBCr420 Deep Color mode bit definitions
2018-10-16 16:38:16 +03:00
drm: Add drm_encoder_mask()
2018-07-02 18:45:55 +03:00
drm: Don't include <drm/drm_encoder.h> in <drm/drm_crtc.h>
2016-12-18 16:29:29 +05:30
drm/cma-helper: Remove drm_fb_cma_fbdev_init_with_funcs()
2018-07-10 14:54:50 +02:00
drm/fb-helper: Finish the generic fbdev emulation
2018-07-10 14:54:09 +02:00
drm: writeback: Add client capability for exposing writeback connectors
2018-06-20 15:30:20 +01:00
drm/kms-helpers: Use recommened kerneldoc for struct member refs
2017-01-25 16:18:57 +01:00
drm/fourcc: Add is_yuv field to drm_format_info to denote if the format is yuv
2018-07-18 16:56:45 +01:00
drm/framebuffer: Print task that allocated the fb in debug info.
2017-12-20 15:30:17 +01:00
drm: move read_domains and write_domain into i915
2018-02-16 14:12:48 +00:00
Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
2017-12-04 05:42:49 +10:00
drm: Move simple_display_pipe prepare_fb helper into gem fb helpers
2018-04-24 13:57:22 +02:00
drm: drop extern from function decls
2017-03-24 09:36:06 +01:00
drm: drop extern from function decls
2017-03-24 09:36:06 +01:00
drm: Fix HDCP downstream dev count read
2018-04-16 12:10:48 -04:00
drm: remove all control node code
2018-05-03 21:26:32 +02:00
drm: Extract drm_vblank.[hc]
2017-06-01 08:02:14 +02:00
drm: Add four ioctls for managing drm mode object leases [v7]
2017-10-25 16:31:30 +10:00
drm: prefer inline over __inline__
2018-03-28 09:34:12 +03:00
drm/dsi: Implement DCS set/get display brightness
2016-08-24 13:34:00 +02:00
drm/mm: Add a search-by-address variant to only inspect a single hole
2018-05-24 15:04:30 +01:00
drm: Document mode_config.max_width/height as the max fb dimensions
2018-06-21 19:16:07 +03:00
drm: remove drm_mode_object_{un/reference} aliases
2018-03-19 09:09:46 -04:00
drm: drop _mode_ from remaining connector functions
2018-07-13 18:40:27 +02:00
drm/modeset-helper: Add simple modeset suspend/resume helpers
2017-11-30 18:18:08 +01:00
drm: drop _mode_ from update_edit_property()
2018-07-13 18:40:27 +02:00
drm/atomic: Prepare drm_modeset_lock infrastructure for interruptible waiting, v2.
2017-09-13 09:50:52 +02:00
drm: of: Export and rename drm_crtc_port_mask()
2018-06-27 21:44:04 +02:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
Revert "drm/panel: Add device_link from panel device to DRM device"
2018-09-27 11:00:42 -04:00
drm: drop drm_pcie_get_speed_cap_mask and drm_pcie_get_max_link_width
2018-07-05 16:40:00 -05:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
drm: switch drm_plane to inline comments
2018-07-13 18:40:28 +02:00
drm: add missing ctx argument to plane transitional helpers
2018-07-03 09:30:19 +02:00
dma-buf: remove kmap_atomic interface
2018-06-20 15:59:34 +02:00
drm: Add puts callback for the coredump printer
2018-07-30 08:49:41 -04:00
drm: Fix kerneldoc for DRM_MODE_PROP_IMMUTABLE
2018-07-13 12:18:03 -04:00
drm/rect: Handle rounding errors in drm_rect_clip_scaled, v3.
2018-05-04 11:09:54 +02:00
drm: Fix warning when building docs for scdc_helper
2017-07-31 14:24:14 +02:00
drm: Move simple_display_pipe prepare_fb helper into gem fb helpers
2018-04-24 13:57:22 +02:00
drm/syncobj: some kerneldoc polish
2017-12-15 11:26:52 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
drm: Add panel orientation quirks, v6.
2017-12-04 23:03:21 +01:00
Merge tag 'drm-intel-next-2018-02-21' of git://anongit.freedesktop.org/drm/drm-intel into drm-next
2018-03-01 14:07:22 +10:00
drm/i915: Prevent writing into a read-only object via a GGTT mmap
2018-07-13 16:14:04 +01:00
drm/atomic: Avoid connector to writeback_connector casts
2018-07-07 07:51:19 +02:00
drm: move drv test macros out of drmP.h
2018-07-13 18:40:27 +02:00
drm/scheduler: only kill entity if last user is killed v2
2018-07-31 16:58:20 -05:00
drm/i915: Split audio component to a generic type
2018-07-17 22:25:19 +02:00
x86/gpu: reserve ICL's graphics stolen memory
2018-07-10 16:28:47 -07:00
drm/i915/aml: Introducing Amber Lake platform
2018-06-18 10:49:57 -07:00
drm/i915: prefer resource_size_t for everything stolen
2017-12-12 12:30:22 +02:00
ALSA: x86: Register multiple PCM devices for the LPE audio card
2017-05-03 16:24:00 +03:00
drm: move amd_gpu_scheduler into common location
2017-12-07 11:51:56 -05:00
f9a0a08d9c