linux.git/drivers/gpu/drm/xe/xe_module.c, branch v6.16

drm/xe/guc: Default log level to non-verbose

2025-07-11T03:59:39+00:00

Currently xe sets the guc log level to a verbose level since it's useful
to debug hangs and general development. However the verbose level may
already be too much and affect performance.

Michal Mrozek did some tests with the L0 compute stack for submission
latency with ULLS disabled. Below are the normalized numbers with log
level 3 (the current default) as baseline for each test:

                          Test \ Log Level                        3      0      1      2
 ----------------------------------------------------------- ------ ------ ------ ------
  BestWalkerNthCommandListSubmission(CmdListCount=2)           1.00   0.63   0.63   0.96
  BestWalkerNthSubmission(KernelCount=2)                       1.00   0.62   0.63   0.96
  BestWalkerNthSubmissionImmediate(KernelCount=2)              1.00   0.58   0.58   0.85
  BestWalkerSubmission                                         1.00   0.62   0.62   0.96
  BestWalkerSubmissionImmediate                                1.00   0.63   0.62   0.96
  BestWalkerSubmissionImmediateMultiCmdlists(cmdlistCount=2)   1.00   0.58   0.58   0.86
  BestWalkerSubmissionImmediateMultiCmdlists(cmdlistCount=4)   1.00   0.70   0.70   0.83
  BestWalkerSubmissionImmediateMultiCmdlists(cmdlistCount=8)   1.00   0.53   0.52   0.78

Log level 2 is the first "verbose level" for GuC, where the biggest
difference happens. Keep log level 3 for CONFIG_DRM_XE_DEBUG, but switch
to 1, i.e.  GUC_LOG_LEVEL_NON_VERBOSE, for "normal" builds.

Cc: Michal Mrozek 
Cc: John Harrison 
Reviewed-by: John Harrison 
Link: https://lore.kernel.org/r/20250613-guc-log-level-v2-1-cb84a63e49fe@intel.com
Signed-off-by: Lucas De Marchi 
(cherry picked from commit a37128ba613ad6a5f81f382fa3cfe5c4a6527310)
Signed-off-by: Lucas De Marchi

Merge tag 'drm-next-2025-05-28' of https://gitlab.freedesktop.org/drm/kernel

2025-05-28T16:46:39+00:00

Pull drm updates from Dave Airlie:
 "As part of building up nova-core/nova-drm pieces we've brought in some
  rust abstractions through this tree, aux bus being the main one, with
  devres changes also in the driver-core tree. Along with the drm core
  abstractions and enough nova-core/nova-drm to use them. This is still
  all stub work under construction, to build the nova driver upstream.

  The other big NVIDIA related one is nouveau adds support for
  Hopper/Blackwell GPUs, this required a new GSP firmware update to
  570.144, and a bunch of rework in order to support multiple fw
  interfaces.

  There is also the introduction of an asahi uapi header file as a
  precursor to getting the real driver in later, but to unblock
  userspace mesa packages while the driver is trapped behind rust
  enablement.

  Otherwise it's the usual mixture of stuff all over, amdgpu, i915/xe,
  and msm being the main ones, and some changes to vsprintf.

  new drivers:
   - bring in the asahi uapi header standalone
   - nova-drm: stub driver

  rust dependencies (for nova-core):
   - auxiliary
       - bus abstractions
       - driver registration
       - sample driver
   - devres changes from driver-core
   - revocable changes

  core:
   - add Apple fourcc modifiers
   - add virtio capset definitions
   - extend EXPORT_SYNC_FILE for timeline syncobjs
   - convert to devm_platform_ioremap_resource
   - refactor shmem helper page pinning
   - DP powerup/down link helpers
   - extended %p4cc in vsprintf.c to support fourcc prints
   - change vsprintf %p4cn to %p4chR, remove %p4cn
   - Add drm_file_err function
   - IN_FORMATS_ASYNC property
   - move sitronix from tiny to their own subdir

  rust:
   - add drm core infrastructure rust abstractions
     (device/driver, ioctl, file, gem)

  dma-buf:
   - adjust sg handling to not cache map on attach
   - allow setting dma-device for import
   - Add a helper to sort and deduplicate dma_fence arrays

  docs:
   - updated drm scheduler docs
   - fbdev todo update
   - fb rendering
   - actual brightness

  ttm:
   - fix delayed destroy resv object

  bridge:
   - add kunit tests
   - convert tc358775 to atomic
   - convert drivers to devm_drm_bridge_alloc
   - convert rk3066_hdmi to bridge driver

  scheduler:
   - add kunit tests

  panel:
   - refcount panels to improve lifetime handling
   - Powertip PH128800T004-ZZA01
   - NLT NL13676BC25-03F, Tianma TM070JDHG34-00
   - Himax HX8279/HX8279-D DDIC
   - Visionox G2647FB105
   - Sitronix ST7571
   - ZOTAC rotation quirk

  vkms:
   - allow attaching more displays

  i915:
   - xe3lpd display updates
   - vrr refactor
   - intel_display struct conversions
   - xe2hpd memory type identification
   - add link rate/count to i915_display_info
   - cleanup VGA plane handling
   - refactor HDCP GSC
   - fix SLPC wait boosting reference counting
   - add 20ms delay to engine reset
   - fix fence release on early probe errors

  xe:
   - SRIOV updates
   - BMG PCI ID update
   - support separate firmware for each GT
   - SVM fix, prelim SVM multi-device work
   - export fan speed
   - temp disable d3cold on BMG
   - backup VRAM in PM notifier instead of suspend/freeze
   - update xe_ttm_access_memory to use GPU for non-visible access
   - fix guc_info debugfs for VFs
   - use copy_from_user instead of __copy_from_user
   - append PCIe gen5 limitations to xe_firmware document

  amdgpu:
   - DSC cleanup
   - DC Scaling updates
   - Fused I2C-over-AUX updates
   - DMUB updates
   - Use drm_file_err in amdgpu
   - Enforce isolation updates
   - Use new dma_fence helpers
   - USERQ fixes
   - Documentation updates
   - SR-IOV updates
   - RAS updates
   - PSP 12 cleanups
   - GC 9.5 updates
   - SMU 13.x updates
   - VCN / JPEG SR-IOV updates

  amdkfd:
   - Update error messages for SDMA
   - Userptr updates
   - XNACK fixes

  radeon:
   - CIK doorbell cleanup

  nouveau:
   - add support for NVIDIA r570 GSP firmware
   - enable Hopper/Blackwell support

  nova-core:
   - fix task list
   - register definition infrastructure
   - move firmware into own rust module
   - register auxiliary device for nova-drm

  nova-drm:
   - initial driver skeleton

  msm:
   - GPU:
       - ACD (adaptive clock distribution) for X1-85
       - drop fictional address_space_size
       - improve GMU HFI response time out robustness
       - fix crash when throttling during boot
   - DPU:
       - use single CTL path for flushing on DPU 5.x+
       - improve SSPP allocation code for better sharing
       - Enabled SmartDMA on SM8150, SC8180X, SC8280XP, SM8550
       - Added SAR2130P support
       - Disabled DSC support on MSM8937, MSM8917, MSM8953, SDM660
   - DP:
       - switch to new audio helpers
       - better LTTPR handling
   - DSI:
       - Added support for SA8775P
       - Added SAR2130P support
   - HDMI:
       - Switched to use new helpers for ACR data
       - Fixed old standing issue of HPD not working in some cases

  amdxdna:
   - add dma-buf support
   - allow empty command submits

  renesas:
   - add dma-buf support
   - add zpos, alpha, blend support

  panthor:
   - fail properly for NO_MMAP bos
   - add SET_LABEL ioctl
   - debugfs BO dumping support

  imagination:
   - update DT bindings
   - support TI AM68 GPU

  hibmc:
   - improve interrupt handling and HPD support

  virtio:
   - add panic handler support

  rockchip:
   - add RK3588 support
   - add DP AUX bus panel support

  ivpu:
   - add heartbeat based hangcheck

  mediatek:
   - prepares support for MT8195/99 HDMIv2/DDCv2

  anx7625:
   - improve HPD

  tegra:
   - speed up firmware loading

* tag 'drm-next-2025-05-28' of https://gitlab.freedesktop.org/drm/kernel: (1627 commits)
  drm/nouveau/tegra: Fix error pointer vs NULL return in nvkm_device_tegra_resource_addr()
  drm/xe: Default auto_link_downgrade status to false
  drm/xe/guc: Make creation of SLPC debugfs files conditional
  drm/i915/display: Add check for alloc_ordered_workqueue() and alloc_workqueue()
  drm/i915/dp_mst: Work around Thunderbolt sink disconnect after SINK_COUNT_ESI read
  drm/i915/ptl: Use everywhere the correct DDI port clock select mask
  drm/nouveau/kms: add support for GB20x
  drm/dp: add option to disable zero sized address only transactions.
  drm/nouveau: add support for GB20x
  drm/nouveau/gsp: add hal for fifo.chan.doorbell_handle
  drm/nouveau: add support for GB10x
  drm/nouveau/gf100-: track chan progress with non-WFI semaphore release
  drm/nouveau/nv50-: separate CHANNEL_GPFIFO handling out from CHANNEL_DMA
  drm/nouveau: add helper functions for allocating pinned/cpu-mapped bos
  drm/nouveau: add support for GH100
  drm/nouveau: improve handling of 64-bit BARs
  drm/nouveau/gv100-: switch to volta semaphore methods
  drm/nouveau/gsp: support deeper page tables in COPY_SERVER_RESERVED_PDES
  drm/nouveau/gsp: init client VMMs with NV0080_CTRL_DMA_SET_PAGE_DIRECTORY
  drm/nouveau/gsp: fetch level shift and PDE from BAR2 VMM
  ...

drm/xe: Strict migration policy for atomic SVM faults

2025-05-14T16:03:29+00:00

Mixing GPU and CPU atomics does not work unless a strict migration
policy of GPU atomics must be device memory. Enforce a policy of must be
in VRAM with a retry loop of 3 attempts, if retry loop fails abort
fault.

Removing always_migrate_to_vram modparam as we now have real migration
policy.

v2:
 - Only retry migration on atomics
 - Drop alway migrate modparam
v3:
 - Only set vram_only on DGFX (Himal)
 - Bail on get_pages failure if vram_only and retry count exceeded (Himal)
 - s/vram_only/devmem_only
 - Update xe_svm_range_is_valid to accept devmem_only argument
v4:
 - Fix logic bug get_pages failure
v5:
 - Fix commit message (Himal)
 - Mention removing always_migrate_to_vram in commit message (Lucas)
 - Fix xe_svm_range_is_valid to check for devmem pages
 - Bail on devmem_only && !migrate_devmem (Thomas)
v6:
 - Add READ_ONCE barriers for opportunistic checks (Thomas)
 - Pair READ_ONCE with WRITE_ONCE (Thomas)
v7:
 - Adjust comments (Thomas)

Fixes: 2f118c949160 ("drm/xe: Add SVM VRAM migration")
Cc: stable@vger.kernel.org
Signed-off-by: Himal Prasad Ghimiray 
Signed-off-by: Matthew Brost 
Acked-by: Himal Prasad Ghimiray 
Reviewed-by: Thomas Hellström 
Link: https://lore.kernel.org/r/20250512135500.1405019-3-matthew.brost@intel.com
(cherry picked from commit a9ac0fa455b050d03e3032501368048fb284d318)
Signed-off-by: Lucas De Marchi

drm/xe: Allow to drop vram resizing

2025-04-10T22:50:01+00:00

The default behavior if the LMEMBAR doesn't match the maximum possible
size is to try to resize it. However the user might want to keep, even
for testing the behavior with small BAR, whatever size was set via
sysfs. Change the module parameter to int and check for negative value.

Cc: Michał Winiarski 
Reviewed-by: Michał Winiarski 
Link: https://lore.kernel.org/r/20250409-bar-resize-param-v1-1-75bf4df38aa0@intel.com
Signed-off-by: Lucas De Marchi

drm/xe: Add configfs to enable survivability mode

2025-04-09T05:23:59+00:00

Registers a configfs subsystem called 'xe' that creates a
directory in the mounted configfs directory (/sys/kernel/config)
Userspace can then create the device that has to be configured
under the xe directory

	mkdir /sys/kernel/config/xe/0000:03:00.0

The device created will have the following attributes to be
configured

	/sys/kernel/config/xe/
		.. 0000:03:00.0/
			... survivability_mode

v2: fix kernel-doc
    fix return value (Lucas)

v3: fix kernel-doc (Lucas)

Signed-off-by: Riana Tauro 
Reviewed-by: Lucas De Marchi 
Link: https://lore.kernel.org/r/20250407051414.1651616-2-riana.tauro@intel.com
Signed-off-by: Lucas De Marchi

drm/xe: Add always_migrate_to_vram modparam

2025-03-06T19:36:57+00:00

Used to show we can bounce memory multiple times which will happen once
a real migration policy is implemented. Can be removed once migration
policy is implemented.

v3:
 - Pull some changes into the previous patch (Thomas)
 - Better commit message (Thomas)

Signed-off-by: Matthew Brost 
Reviewed-by: Thomas Hellström 
Reviewed-by: Himal Prasad Ghimiray 
Link: https://patchwork.freedesktop.org/patch/msgid/20250306012657.3505757-32-matthew.brost@intel.com

drm/xe: Add modparam for SVM notifier size

2025-03-06T19:36:57+00:00

Useful to experiment with notifier size and how it affects performance.

v3:
 - Pull missing changes including in following patch (Thomas)
v5:
 - Spell out power of 2 (Thomas)

Signed-off-by: Matthew Brost 
Reviewed-by: Thomas Hellström 
Reviewed-by: Himal Prasad Ghimiray 
Link: https://patchwork.freedesktop.org/patch/msgid/20250306012657.3505757-31-matthew.brost@intel.com

drm/xe: Remove xe_dummy_exit()

2025-02-03T15:51:45+00:00

Since commit 014125c64d09 ("drm/xe: Support 'nomodeset' kernel
command-line option") the dummy exit is not needed anymore since the
caller check for a NULL pointer. Drop it.

Reviewed-by: Raag Jadav 
Link: https://patchwork.freedesktop.org/patch/msgid/20250131223908.4147195-1-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi

drm/xe/guc: Reduce default GuC log verbosity

2024-11-12T19:42:12+00:00

Drop the default verbosity from 5 (max) to 3 as the extra verbosity
generally doesn't provide anything vitally important but does cause
rapid log overflow.

Signed-off-by: John Harrison 
Reviewed-by: Matthew Brost 
Link: https://patchwork.freedesktop.org/patch/msgid/20241108212737.2044007-2-John.C.Harrison@Intel.com

drm/xe: Use separate rpm lockdep map for non-d3cold-capable devices

2024-08-28T14:29:15+00:00

For non-d3cold-capable devices we'd like to be able to wake up the
device from reclaim. In particular, for Lunar Lake we'd like to be
able to blit CCS metadata to system at shrink time; at least from
kswapd where it's reasonable OK to wait for rpm resume and a
preceding rpm suspend.

Therefore use a separate lockdep map for such devices and prime it
reclaim-tainted.

v2:
- Rename lockmap acquire- and release functions. (Rodrigo Vivi).
- Reinstate the old xe_pm_runtime_lockdep_prime() function and
  rename it to xe_rpm_might_enter_cb(). (Matthew Auld).
- Introduce a separate xe_pm_runtime_lockdep_prime function
  called from module init for known required locking orders.
v3:
- Actually hook up the prime function at module init.
v4:
- Rebase.
v5:
- Don't use reclaim-safe RPM with sriov.

Cc: "Vivi, Rodrigo" 
Cc: "Auld, Matthew" 
Signed-off-by: Thomas Hellström 
Reviewed-by: Matthew Auld 
Link: https://patchwork.freedesktop.org/patch/msgid/20240826143450.92511-1-thomas.hellstrom@linux.intel.com