If a range or VMA is invalidated and scratch page is disabled, there
is no reason to issue a TLB invalidation on unbind, skip TLB
innvalidation is this condition is true. This is an opportunistic check
as it is done without the notifier lock, thus it possible for the range
to be invalidated after this check is performed.
This should improve performance of the SVM garbage collector, for
example, xe_exec_system_allocator --r many-stride-new-prefetch, went
~20s to ~9.5s on a BMG.
v2:
- Use helper for valid check (Thomas)
v3:
- Avoid skipping TLB invalidation if PTEs are removed at a higher
level than the range
- Never skip TLB invalidations for VMA
- Drop Himal's RB
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://lore.kernel.org/r/20250616063024.2059829-3-matthew.brost@intel.com
Rather than having multiple READ_ONCE of the tile_* fields and comments
in code, use helper with kernel doc for single access point and clear
rules.
v3:
- s/xe_vm_has_valid_gpu_pages/xe_vm_has_valid_gpu_mapping
Suggested-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Link: https://lore.kernel.org/r/20250616063024.2059829-2-matthew.brost@intel.com
This WA is applicable to BMG as well.
Note that this is a GSC WA and we don't load the GSC on BMG, so
extending the WA to BMG won't do anything right now. However, it helps
future-proof the driver so that if we ever turn the GSC on we won't have
to remember to extend this WA.
v2: don't use VERSION_RANGE from 2001 to 2004 (Matt)
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://lore.kernel.org/r/20250613231128.1261815-2-daniele.ceraolospurio@intel.com
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 <michal.mrozek@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://lore.kernel.org/r/20250613-guc-log-level-v2-1-cb84a63e49fe@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Because OAM_SAG doesn't have an attached hwe, assign another hwe belonging
to the same gt (and different OAM unit) to OAM_SAG. A hwe is needed for
batch submissions to program OA HW.
v2: Assign an engine with a valid OA unit for OAM_SAG (Umesh)
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://lore.kernel.org/r/20250606192618.4133817-5-ashutosh.dixit@intel.com
Previously, the oa_unit associated with an OA stream was derived from hwe
associated with the stream (stream->hwe->oa_unit). This breaks with OAM_SAG
since OAM_SAG does not have any attached hardware engines. Resolve this by
introducing stream->oa_unit and stop depending on stream->hwe.
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://lore.kernel.org/r/20250606192618.4133817-4-ashutosh.dixit@intel.com
Print hwe to OA unit mapping to dmesg, to help debug for current and new
platforms.
v2: Separate out xe_oa_print_gt_oa_units() (Umesh)
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://lore.kernel.org/r/20250606192618.4133817-3-ashutosh.dixit@intel.com
On Xe2+ platforms, media engines are attached to "SCMI" OA media (OAM)
units. One or more SCMI OAM units might be present on a platform. In
addition there is another OAM unit for global events, called
OAM-SAG. Performance metrics for media workloads can be obtained from these
OAM units, similar to OAG.
Expose these OAM units for userspace to use. OAM-SAG is exposed as an OA
unit without any attached engines.
Bspec: 70819, 67103, 63844, 72572, 74476, 61284
v2: Fix xe_gt_WARN_ON in __hwe_oam_unit for < 12.7 platforms
v3: Return XE_OA_UNIT_INVALID for < 12.7 to indicate no OAM units
v4: Move xe_oa_print_oa_units() to separate patch
v5: Introduce DRM_XE_OA_UNIT_TYPE_OAM_SAG
v6: Introduce DRM_XE_OA_CAPS_OAM
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://lore.kernel.org/r/20250606192618.4133817-2-ashutosh.dixit@intel.com
The parallel scratch layout spans 2k and LRC_ENGINE_ID_PPHWSP_OFFSET
lands within than space. This happens to be ok as the offset lands in
reserved part of guc_sched_wq_desc, but for future safety move
LRC_ENGINE_ID_PPHWSP_OFFSET to the unused offset of 1024 below parallel
scratch layout.
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://lore.kernel.org/r/20250612172850.4170428-1-matthew.brost@intel.com
We missed to drop it in commit 50680d1698 ("drm/xe/tests: remove
unused leftover xe_call_for_each_device()") so drop it now.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://lore.kernel.org/r/20250613191938.1980-2-michal.wajdeczko@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
The xe driver is the official driver for Intel Xe2 and later, while
maintaining experimental support for earlier GPUs. Reword the help
message accordingly.
Reviewed-by: Maarten Lankhorst <dev@lankhorst.se>
Link: https://lore.kernel.org/r/20250611-xe-kconfig-help-v1-1-8bcc6b47d11a@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Now that the PAT settings for the new special entries introduced by Xe2
are decided during early software init and left NULL on platforms they
don't apply to, there's no need to keep separate programming functions
for pre-Xe2 and post-Xe2 platforms. Consolidate down to a single pair
of programming functions (mcr and non-mcr) that can be used on any
platform.
Reviewed-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Link: https://lore.kernel.org/r/20250613214751.792066-4-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Decide whether programming of the special ATS and PTA PAT entries is
necessary (and which entries should be programmed) during early software
initialization rather than hardcoding this into the 'program' functions.
Future platforms may want to re-use the same functions but utilize
different special entry values. Consolidating all of the decisions
into one place keeps things simple.
Reviewed-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Link: https://lore.kernel.org/r/20250613214751.792066-3-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Introduce xe_vm_range_tilemask_tlb_invalidation(), which issues a TLB
invalidation for a specified address range across GTs indicated by a
tilemask.
v2 (Matthew Brost)
- Move WARN_ON_ONCE to svm caller
- Remove xe_gt_tlb_invalidation_vma
- s/XE_WARN_ON/WARN_ON_ONCE
v3
- Rebase
Suggested-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250609041616.1723636-1-himal.prasad.ghimiray@intel.com
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Set GT min frequency to 1200Mhz once driver load is complete.
v2: Review comments (Rodrigo)
v3: Apply Wa earlier so user_req_min is not clobbered.
v4: Apply to all GTs (Lucas)
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Link: https://lore.kernel.org/r/20250612-wa-14022085890-v4-3-94ba5dcc1e30@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Messaging to GuC may get canceled when device is wedged. Don't
flag this as an error in xe_guc_pc code.
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Link: https://lore.kernel.org/r/20250612-wa-14022085890-v4-1-94ba5dcc1e30@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
When injecting fault to xe_guc_ct_send_recv() & xe_guc_mmio_send_recv()
functions, the CI test systems are going out of space and crashing. To
avoid this issue, a new helper function is created and when fault is
injected into this xe_is_injection_active() helper function, ct dead
capture is avoided which suppresses ct dumps in the log.
Signed-off-by: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
Suggested-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://lore.kernel.org/r/20250612080402.22011-1-satyanarayana.k.v.p@intel.com
When the GuC fails to load we declare the device wedged. However, the
very first GuC load attempt on GT0 (from xe_gt_init_hwconfig) is done
before the GT1 GuC objects are initialized, so things go bad when the
wedge code attempts to cleanup GT1. To fix this, check the initialization
status in the functions called during wedge.
Fixes: 7dbe8af13c ("drm/xe: Wedge the entire device")
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Jonathan Cavitt <jonathan.cavitt@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Zhanjun Dong <zhanjun.dong@intel.com>
Cc: stable@vger.kernel.org # v6.12+: 1e1981b16bb1: drm/xe: Fix taking invalid lock on wedge
Cc: stable@vger.kernel.org # v6.12+
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250611214453.1159846-2-daniele.ceraolospurio@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
No idea why, but without this GuC context switches randomly fail when
running IGTs in a loop. Need to follow up why this fixes the
aforementioned issue but can live with a stable driver for now.
Fixes: 617d824c53 ("drm/xe: Add WA BB to capture active context utilization")
Cc: stable@vger.kernel.org
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Tested-by: Shuicheng Lin <shuicheng.lin@intel.com>
Link: https://lore.kernel.org/r/20250612031925.4009701-1-matthew.brost@intel.com
Updating range->tile_invalidated should be done with WRITE_ONCE to pair
with READ_ONCE in opportunistic checks.
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Maarten Lankhrost <maarten.lankhorst@linux.intel.com>
Link: https://lore.kernel.org/r/20250604234712.2441130-1-matthew.brost@intel.com
Only the VM dma-resv lock is needed in SVM pagefaults so
xe_vm_lock/unlock can be used instead of drm exec. Micro optimization
but should save some CPU cycles in a critical path.
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Link: https://lore.kernel.org/r/20250603174012.2195759-1-matthew.brost@intel.com
The post context restore (WA BB) is a mechanism in HW that may be used
for things other than the utilization setup. Create a new function
called setup_wa_bb() that wraps any function writing useful commands in
the buffer.
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Link: https://lore.kernel.org/r/20250604-wa-bb-fix-v1-2-0dfc5dafcef0@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
In case the BO is in iomem, we can't simply take the vaddr and write to
it. Instead, prepare a separate buffer that is later copied into io
memory. Right now it's just a few words that could be using
xe_map_write32(), but the intention is to grow the WA BB for other
uses.
Fixes: 82b98cadb0 ("drm/xe: Add WA BB to capture active context utilization")
Cc: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Link: https://lore.kernel.org/r/20250604-wa-bb-fix-v1-1-0dfc5dafcef0@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Add set of workarounds for xe2_hpg.
-v2: Fix xe2_hpg GMD version for some workarounds.
-v3: Removed extra Workaround (Matt Roper)
Signed-off-by: Shekhar Chauhan <shekhar.chauhan@intel.com>
Signed-off-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://lore.kernel.org/r/20250605190804.1287289-3-dnyaneshwar.bhadane@intel.com
On old Intel platforms, the size of the GSM (i.e., the stolen memory
that holds the GGTT page table entries) could vary, so the driver needed
to read the actual size from the PCI config space. However from Xe_HP
onward, the GSM is now always guaranteed to be exactly 8MB (which
translates to a 4GB GGTT address space); this is always true regardless
of what the platform's much larger PPGTT address space is.
The bspec doesn't document the PCI config space as being a valid way to
query the size of the GSM after Xe_LP platforms, although so far it
still seems to be giving us proper values for Xe_HP, Xe2, and Xe3.
However we suspect that the config space will stop providing correct
values on some upcoming platforms, so we should stop relying on it.
Instead just use the hardcoded 8MB value as documented elsewhere in the
bspec.
Bspec: 49636, 67090, 50589
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://lore.kernel.org/r/20250605225352.2333981-2-matthew.d.roper@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
We are already prepared to define firmwares per-GT type, so we
should also prepare our messages to be GT-oriented.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250606204311.813-1-michal.wajdeczko@intel.com
Add a function to init ggtt for kunit, and use the GGTT function for
initialising the GGTT node without populating it. This
prevents the test from ever knowing about struct xe_ggtt.
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250505121924.921544-11-dev@lankhorst.se
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Split the GGTT PTE readout to a separate function, this is useful for
adding testcases in the next commit, and also cleaner than manually
reading out GGTT.
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Link: https://lore.kernel.org/r/20250505121924.921544-10-dev@lankhorst.se
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
The users inside display have been converted to use thepte_encode_flags
callback, we can now remove the pte_encode_bo cb.
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Link: https://lore.kernel.org/r/20250505121924.921544-9-dev@lankhorst.se
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
For DPT, it is sufficient to get the GGTT encode flags to fill the DPT.
Create a function to return the encode flags, and then encode using the
BO address.
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Link: https://lore.kernel.org/r/20250505121924.921544-7-dev@lankhorst.se
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Pinning large linear display framebuffers is becoming a bottleneck.
My plan of attack is doing a custom walk over the BO, this allows for
easier optimization of consecutive entries.
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250505121924.921544-6-dev@lankhorst.se
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Obtain the id from the root tile. Likely this can be hardcoded to 0,
but use the clean solution of obtaining root id and doing that.
to_xe_device(ggtt->tile) can also be easily replaced with xe.
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250505121924.921544-5-dev@lankhorst.se
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Instead of allocating inside xe_tile, create a new function that returns
an allocated struct xe_ggtt from xe_ggtt.c
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250505121924.921544-4-dev@lankhorst.se
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Another requirement of hiding more of struct xe_ggtt.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250505121924.921544-3-dev@lankhorst.se
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
This is the first step to hide the details of struct xe_ggtt.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250505121924.921544-2-dev@lankhorst.se
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
IOSF_MBI was only useful for some gen8 platforms, which were never
supported by Xe. Presumably needed for display at one point, but display
is fixed to put stubs in compat-i915-headers/vlv_sideband.h. (in
drm-intel-next: vlv_iosf_sb.h)
Link: https://lore.kernel.org/r/20250605074644.71036-1-dev@lankhorst.se
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
The renaming to the timer_*() namespace was delayed due massive conflicts
against Linux-next. Now that everything is upstream finish the conversion.
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Merge tag 'timers-cleanups-2025-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer cleanup from Thomas Gleixner:
"The delayed from_timer() API cleanup:
The renaming to the timer_*() namespace was delayed due massive
conflicts against Linux-next. Now that everything is upstream finish
the conversion"
* tag 'timers-cleanups-2025-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
treewide, timers: Rename from_timer() to timer_container_of()
