linux-stable.git/include/drm, branch v6.11.3

drm/sched: Fix dynamic job-flow control race

2024-10-10T10:04:11+00:00

commit 440d52b370b03b366fd26ace36bab20552116145 upstream.

Fixes a race condition reported here: https://github.com/AsahiLinux/linux/issues/309#issuecomment-2238968609

The whole premise of lockless access to a single-producer-single-
consumer queue is that there is just a single producer and single
consumer.  That means we can't call drm_sched_can_queue() (which is
about queueing more work to the hw, not to the spsc queue) from
anywhere other than the consumer (wq).

This call in the producer is just an optimization to avoid scheduling
the consuming worker if it cannot yet queue more work to the hw.  It
is safe to drop this optimization to avoid the race condition.

Suggested-by: Asahi Lina 
Fixes: a78422e9dff3 ("drm/sched: implement dynamic job-flow control")
Closes: https://github.com/AsahiLinux/linux/issues/309
Cc: stable@vger.kernel.org
Signed-off-by: Rob Clark 
Reviewed-by: Danilo Krummrich 
Tested-by: Janne Grunau 
Signed-off-by: Danilo Krummrich 
Link: https://patchwork.freedesktop.org/patch/msgid/20240913202301.16772-1-robdclark@gmail.com
Signed-off-by: Greg Kroah-Hartman

drm/printer: Allow NULL data in devcoredump printer

2024-10-10T10:03:33+00:00

[ Upstream commit 53369581dc0c68a5700ed51e1660f44c4b2bb524 ]

We want to determine the size of the devcoredump before writing it out.
To that end, we will run the devcoredump printer with NULL data to get
the size, alloc data based on the generated offset, then run the
devcorecump again with a valid data pointer to print.  This necessitates
not writing data to the data pointer on the initial pass, when it is
NULL.

v5:
 - Better commit message (Jonathan)
 - Add kerenl doc with examples (Jani)

Cc: Maarten Lankhorst 
Acked-by: Maarten Lankhorst 
Signed-off-by: Matthew Brost 
Reviewed-by: Jonathan Cavitt 
Link: https://patchwork.freedesktop.org/patch/msgid/20240801154118.2547543-3-matthew.brost@intel.com
Signed-off-by: Sasha Levin

accel: Use XArray instead of IDR for minors

2024-09-30T14:31:08+00:00

[ Upstream commit 45c4d994b82b08f0ce5eb50f8da29379c92a391e ]

Accel minor management is based on DRM (and is also using struct
drm_minor internally), since DRM is using XArray for minors, it makes
sense to also convert accel.
As the two implementations are identical (only difference being the
underlying xarray), move the accel_minor_* functionality to DRM.

Signed-off-by: Michał Winiarski 
Acked-by: James Zhu 
Acked-by: Christian König 
Link: https://patchwork.freedesktop.org/patch/msgid/20240823163048.2676257-3-michal.winiarski@intel.com
Signed-off-by: Christian König 
Signed-off-by: Sasha Levin

Merge tag 'drm-misc-fixes-2024-08-29' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

2024-08-30T01:28:11+00:00

A revert for a previous TTM commit causing stuttering, 3 fixes for
vmwgfx related to buffer operations, a fix for video/aperture with
non-VGA primary devices, and a preemption status fix for v3d

Signed-off-by: Dave Airlie 

From: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20240829-efficient-swift-from-lemuria-f60c05@houat

drm/i915: ARL requires a newer GSC firmware

2024-08-27T10:23:58+00:00

ARL and MTL share a single GSC firmware blob. However, ARL requires a
newer version of it.

So add differentiate of the PCI ids for ARL from MTL and create ARL as
a sub-platform of MTL. That way, all the existing workarounds and such
still treat ARL as MTL exactly as before. However, now the GSC code
can check for ARL and do an extra version check on the firmware before
committing to it.

Also, the version extraction code has various ways of failing but the
return code was being ignore and so the firmware load would attempt to
continue anyway. Fix that by propagating the return code to the next
level out.

Signed-off-by: John Harrison 
Fixes: 213c43676beb ("drm/i915/mtl: Remove the 'force_probe' requirement for Meteor Lake")
Reviewed-by: Daniele Ceraolo Spurio 
Acked-by: Rodrigo Vivi 
Link: https://patchwork.freedesktop.org/patch/msgid/20240802031051.3816392-1-John.C.Harrison@Intel.com
Signed-off-by: Rodrigo Vivi 
(cherry picked from commit 67733d7a71503fd3e32eeada371f8aa2516c5c95)
Signed-off-by: Joonas Lahtinen

Revert "drm/ttm: increase ttm pre-fault value to PMD size"

2024-08-23T13:43:23+00:00

This reverts commit 0ddd2ae586d28e521d37393364d989ce118802e0.

This patch causes sluggishness and stuttering in graphical
apps.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3564
Link: https://www.spinics.net/lists/dri-devel/msg457005.html
Signed-off-by: Alex Deucher 
Cc: Zhu Lingshan 
Cc: Christian König 
Reviewed-by: Christian König 
Signed-off-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/20240820134600.1909370-1-alexander.deucher@amd.com

drm/buddy: Add start address support to trim function

2024-08-07T22:19:00+00:00

- Add a new start parameter in trim function to specify exact
  address from where to start the trimming. This would help us
  in situations like if drivers would like to do address alignment
  for specific requirements.

- Add a new flag DRM_BUDDY_TRIM_DISABLE. Drivers can use this
  flag to disable the allocator trimming part. This patch enables
  the drivers control trimming and they can do it themselves
  based on the application requirements.

v1:(Matthew)
  - check new_start alignment with min chunk_size
  - use range_overflows()

Signed-off-by: Arunpravin Paneer Selvam 
Acked-by: Alex Deucher 
Acked-by: Christian König 
Signed-off-by: Alex Deucher 
(cherry picked from commit db65eb46de135338d6177f8853e0fd208f19d63e)

Merge tag 'drm-intel-next-2024-06-28' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-next

2024-07-10T08:36:47+00:00

drm/i915 feature pull #2 for v6.11:

Features and functionality:
- More eDP Panel Replay enabling (Jouni)
- Add async flip and flip done tracepoints (Ville)

Refactoring and cleanups:
- Clean up BDW+ pipe interrupt register definitions (Ville)
- Prep work for DSB based plane programming (Ville)
- Relocate encoder suspend/shutdown helpers (Imre)
- Polish plane surface alignment handling (Ville)

Fixes:
- Enable more fault interrupts on TGL+/MTL+ (Ville)
- Fix CMRR 32-bit build (Mitul)
- Fix PSR Selective Update Region Scan Line Capture Indication (Jouni)
- Fix cursor fb unpinning (Maarten, Ville)
- Fix Cx0 PHY PLL state verification in TBT mode (Imre)
- Fix unnecessary MG DP programming on MTL+ Type-C (Imre)

DRM changes:
- Rename drm_plane_check_pixel_format() to drm_plane_has_format() and export
  (Ville)
- Add drm_vblank_work_flush_all() (Maarten)

Xe driver changes:
- Call encoder .suspend_complete() hook also on Xe (Imre)

Signed-off-by: Daniel Vetter 
From: Jani Nikula 
Link: https://patchwork.freedesktop.org/patch/msgid/875xttazx2.fsf@intel.com

Merge tag 'drm-misc-next-2024-07-04' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

2024-07-05T10:37:22+00:00

drm-misc-next for $kernel-version:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:
  - dp/mst: Fix daisy-chaining at resume
  - dsc: Add helper to dump the DSC configuration
  - tests: Add tests for the new monochrome TV mode variant

Driver Changes:
  - ast: Refactor the mode setting code
  - panfrost: Fix devfreq job reporting
  - stm: Add LDVS support, DSI PHY updates
  - panels:
    - New panel: AUO G104STN01, K&d kd101ne3-40ti,

Signed-off-by: Daniel Vetter 
From: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20240704-curvy-outstanding-lizard-bcea78@houat

drm/display/dsc: Add a helper to dump the DSC configuration

2024-07-03T15:05:12+00:00

Add a helper to dump the Display Stream Compression configuration, taken
into use in the i915 driver by a later patch.

v2:
- Rebase on the s/DRM_X16/FXP_Q4 change.
- s/DSC configration/DSC configuration in the function documentation.

Acked-by: Jani Nikula 
Signed-off-by: Imre Deak 
Link: https://patchwork.freedesktop.org/patch/msgid/20240628164451.1177612-3-imre.deak@intel.com