- 30 Mar, 2023 2 commits
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Radhakrishna Sripada authored
Wa_22015279794 applies to MTL P from stepping A0 to B0 (exclusive). Signed-off-by:
Radhakrishna Sripada <radhakrishna.sripada@intel.com> Signed-off-by:
Gustavo Sousa <gustavo.sousa@intel.com> Reviewed-by:
Matt Roper <matthew.d.roper@intel.com> Signed-off-by:
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Radhakrishna Sripada authored
Both workarounds require the same implementation and apply to MTL P and M from stepping A0 to B0 (exclusive). v2: - Remove unrelated brace removal. (Matt) Signed-off-by:
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- 29 Mar, 2023 1 commit
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Min Li authored
Userspace can guess the id value and try to race oa_config object creation with config remove, resulting in a use-after-free if we dereference the object after unlocking the metrics_lock. For that reason, unlocking the metrics_lock must be done after we are done dereferencing the object. Signed-off-by:
Min Li <lm0963hack@gmail.com> Fixes: f89823c2 ("drm/i915/perf: Implement I915_PERF_ADD/REMOVE_CONFIG interface") Cc: <stable@vger.kernel.org> # v4.14+ Reviewed-by:
Andi Shyti <andi.shyti@linux.intel.com> Reviewed-by:
Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com> Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230328093627.5067-1-lm0963hack@gmail.com [tursulin: Manually added stable tag.]
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- 28 Mar, 2023 5 commits
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Daniele Ceraolo Spurio authored
The WA states that we need to alert the GSC FW before doing a GSC engine reset and then wait for 200ms. The GuC owns engine reset, so on the i915 side we only need to apply this for full GT reset. Given that we do full GT resets in the resume paths to cleanup the HW state and that a long wait in those scenarios would not be acceptable, a faster path has been introduced where, if the GSC is idle, we try first to individually reset the GuC and all engines except the GSC and only fall back to full reset if that fails. Note: according to the WA specs, if the GSC is idle it should be possible to only wait for the uC wakeup time (~15ms) instead of the whole 200ms. However, the GSC FW team have mentioned that the wakeup time can change based on other things going on in the HW and pcode, so a good security margin would be required. Given that when the GSC is idle we already skip the wait & reset entirely and that this reduced wait would still likely be too long to use in resume paths, it's not worth adding support for this reduced wait. v2: add comment to explain why it is safe to skip the GSC reset (John) Signed-off-by:
Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Matt Roper <matthew.d.roper@intel.com> Cc: John Harrison <john.c.harrison@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by:
John Harrison <John.C.Harrison@Intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230323231857.2194435-2-daniele.ceraolospurio@intel.com
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Daniele Ceraolo Spurio authored
Commit 3db9d590 ("drm/i915/gt: Reset twice") modified the code to always hit the GDRST register twice when doing a reset, with the reported aim to fix invalid post-reset engine state on some platforms (Jasperlake being the only one actually mentioned). This is a problem on MTL, due to the fact that we have to apply a time consuming WA (coming in the next patch) every time we hit the GDRST register in a way that can include the GSC engine. Even post MTL, the expectation is that we'll have some work to do before and after hitting the GDRST if the GSC is involved. Since the issue requiring the double reset seems to be limited to older platforms, instead of trying to handle the double-reset on MTL and future platforms it is just easier to turn it off. The default on MTL is also for GuC to own engine reset, with i915 only covering full-GT reset. Signed-off-by:
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Daniele Ceraolo Spurio authored
In the rare case where we do a full GT reset after starting the HuC load and before it completes (which basically boils down to i915 hanging during init), we need to cancel the delayed load fence, as it will be re-initialized in the post-reset recovery. Fixes: 27536e03 ("drm/i915/huc: track delayed HuC load with a fence") Signed-off-by:
Alan Previn <alan.previn.teres.alexis@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230313205556.1174503-1-daniele.ceraolospurio@intel.com
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Matt Roper authored
Although we now sanitycheck MMIO access during driver load to make sure the MMIO BAR isn't returning all 0xFFFFFFFF, there have been a few cases where (temporarily?) unreliable MMIO access has happened after GPU resets or power events. We'll often notice this on our next GT register access since forcewake handling will fail; let's change our handling slightly so that when this happens we print a more meaningful message clarifying that the problem is the MMIO access, not forcewake specifically. Signed-off-by:
Andrzej Hajda <andrzej.hajda@intel.com> Signed-off-by:
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Matt Roper authored
We occasionally see the PCI device in a non-accessible state at the point the driver is loaded. When this happens, all BAR accesses will read back as 0xFFFFFFFF. Rather than reading registers and misinterpreting their (invalid) values, let's specifically check for 0xFFFFFFFF in a register that cannot have that value to see if the device is accessible. Signed-off-by:
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- 24 Mar, 2023 12 commits
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Umesh Nerlige Ramappa authored
Earlier merge dropped an if block when applying the patch - "drm/i915/mtl: Synchronize i915/BIOS on C6 enabling". Bring back the if block as the check is required by - "drm/i915/mtl: Disable MC6 for MTL A step" to disable C6 on media for A0 stepping. Fixes: 37350409 ("drm/i915/mtl: Synchronize i915/BIOS on C6 enabling") Signed-off-by:
Vinay Belgaumkar <vinay.belgaumkar@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230324213918.75212-1-umesh.nerlige.ramappa@intel.com
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Umesh Nerlige Ramappa authored
OAM does not work with media C6 enabled on some steppings of MTL. Disable OAM if we detect that media C6 was enabled in bios. v2: (Ashutosh) - Remove drm_notice from the driver load path - Log a drm_err when opening an OAM stream on affected steppings v3: - Initialize the engine group even if mc6 is enabled (Ashutosh) - Checkpatch fix Signed-off-by:
Ashutosh Dixit <ashutosh.dixit@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230323225901.3743681-12-umesh.nerlige.ramappa@intel.com
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Umesh Nerlige Ramappa authored
In some cases, perf revision may rely on specific steppings of a platform. To determine the platform, pass i915 object to the perf revision helper. Signed-off-by:
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Umesh Nerlige Ramappa authored
MTL introduces additional OA units dedicated to media use cases. Add support for programming these OA units by passing the media engine class and instance parameters. UMD specific changes for GPUvis support: https://patchwork.freedesktop.org/patch/522827/?series=114023 https://patchwork.freedesktop.org/patch/522822/?series=114023 https://patchwork.freedesktop.org/patch/522826/?series=114023 https://patchwork.freedesktop.org/patch/522828/?series=114023 https://patchwork.freedesktop.org/patch/522816/?series=114023 https://patchwork.freedesktop.org/patch/522825/?series=114023 v2: (Ashutosh) - check for IP_VER(12, 70) instead of MTL - remove PERF_GROUP_OAG comment in mtl_oa_base - remove oa_buffer.group - use engine->oa_group->type in engine_supports_oa_format - remove fw_domains and use FORCEWAKE_ALL - remove MPES/MPEC comment - s/xehp/mtl/ in b counter validation function name - remove engine_supports_oa in __oa_engine_group - remove warn_ON from __oam_engine_group - refactor oa_init_groups and oa_init_regs - assign g->type correctly - use enum oa_type definition v3: (Ashutosh) - Drop oa_unit_functional as engine_supports_oa is enough v4: - s/DRM_DEBUG/drm_dbg/ Signed-off-by:
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Umesh Nerlige Ramappa authored
One or more engines map to a specific OA unit. All reports from these engines are captured in the OA buffer managed by this OA unit. Current i915 OA implementation supports only the OAG unit. OAG primarily caters to render engine, so i915 OA uses render as the default engine in the OA implementation. Since there are more OA units on newer hardware that map to other engines, allow user to pass engine class and instance to select and program specific OA units. UMD specific changes for GPUvis support: https://patchwork.freedesktop.org/patch/522827/?series=114023 https://patchwork.freedesktop.org/patch/522822/?series=114023 https://patchwork.freedesktop.org/patch/522826/?series=114023 https://patchwork.freedesktop.org/patch/522828/?series=114023 https://patchwork.freedesktop.org/patch/522816/?series=114023 https://patchwork.freedesktop.org/patch/522825/?series=114023 v2: (Ashutosh) - Clarify commit message - Add drm_dbg - Clarify uapi description v3: (Ashutosh) - Remove irrelevant info from the uapi comment v4: Ensure engine class:instance is passed together (Ashutosh) v5: Remove unnecessary quote (Ashutosh) Signed-off-by:
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Umesh Nerlige Ramappa authored
Some of the newer OA formats are not powers of 2. For those formats, adjust the hw_tail accordingly when checking for new reports. v2: (Ashutosh) - Switch to OA_TAKEN for diff calculation - Use OA_BUFFER_SIZE instead of the vma size - Update comments Signed-off-by:
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Umesh Nerlige Ramappa authored
Now that OA formats come in flavor of 64 bit reports, the report header has 64 bit report-id, timestamp, context-id and gpu-ticks fields. When filtering these reports, use the right width for these fields. Note that upper dword of context id is reserved, so squash lower dword only. v2: (Ashutosh) - Drop inline - Update comment with dword definitions - report id and timestamp Signed-off-by:
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Umesh Nerlige Ramappa authored
i915_perf_init can fail due to OOM. Fail driver init if i915_perf_init fails. v2: (Jani) - Reorder patch in the series Signed-off-by:
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Umesh Nerlige Ramappa authored
Now that we may have multiple OA units in a single GT as well as on separate GTs, create an engine group that maps to a single OA unit. v2: (Jani) - Drop warning on ENOMEM - Reorder patch in the series v3: (Ashutosh) - Remove unused members from perf structs - Update comments - Update engine_supports_oa check - Just return 1 in num_perf_groups_per_gt for now - Set engine->oa_group to NULL to begin with v4: Use engine_supports_oa() check in oa_init_reg_state (Ashutosh) v5: Rebase after dropping engine_supports_oa helper Signed-off-by:
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Umesh Nerlige Ramappa authored
Once OA supports media engine class:instance, the engine can only be validated outside the switch since class and instance parameters are separate entities. Since OA sseu config depends on engine class:instance, validate OA sseu config outside the switch. v2: (Ashutosh) - Clarify commit message - Use drm_dbg instead of DRM_DEBUG - Reorder stack variables Signed-off-by:
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Vinay Belgaumkar authored
If BIOS enables/disables C6, i915 should do the same. Also, retain this value across driver reloads. This is needed only for MTL as of now due to an existing bug in OA which needs C6 disabled for it to function. BIOS behavior is also different across platforms in terms of how C6 is enabled. Signed-off-by:
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Chris Wilson authored
If we fail to adjust the GuC run-control on opening the perf stream, make sure we unwind the wakeref just taken. v2: Retain old goto label names (Ashutosh) v3: Drop bitfield boolean Fixes: 01e74274 ("drm/i915/guc: Support OA when Wa_16011777198 is enabled") Signed-off-by:
Chris Wilson <chris.p.wilson@linux.intel.com> Reviewed-by:
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- 23 Mar, 2023 5 commits
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John Harrison authored
A failure to load the GuC is occasionally observed where the GuC log actually showed that the GuC had loaded just fine. The implication being that the load just took ever so slightly longer than the 200ms timeout. Given that the actual time should be tens of milliseconds at the slowest, this should never happen. So far the issue has generally been caused by a bad IFWI resulting in low frequencies during boot (depsite the KMD requesting max frequency). However, the issue seems to happen more often than one would like. So a) increase the timeout so that the user still gets a working system even in the case of slow load. And b) report the frequency during the load to see if that is the case of the slow down. v2: Reduce timeout in non-debug builds, add references (Daniele) References: https://gitlab.freedesktop.org/drm/intel/-/issues/7931 References: https://gitlab.freedesktop.org/drm/intel/-/issues/8060 References: https://gitlab.freedesktop.org/drm/intel/-/issues/8083 References: https://gitlab.freedesktop.org/drm/intel/-/issues/8136 References: https://gitlab.freedesktop.org/drm/intel/-/issues/8137Signed-off-by:
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John Harrison authored
There are multiple ways in which the GuC load can fail. The driver was reporting the status register as is, but not everyone can read the matrix unfiltered. So add decoding of the common error cases. Also, remove the comment about interrupt based load completion checking being not recommended. The interrupt was removed from the GuC firmware some time ago so it is no longer an option anyway. While at it, also abort the timeout if a known error code is reported. No need to keep waiting if the GuC has already given up the load. v2: Fix mis-matched case and confusing 'success' variable (Daniele). Signed-off-by:
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Jonathan Cavitt authored
The gt_tlb live selftest has the same code coverage as the igt_cs_tlb subtest of gtt, except it is better at detecting TLB bugs. Furthermore, while igt_cs_tlb is hitting some unforeseen issues, these issues are either false positives due to the test being poorly formatted, or are true positives that can be more easily diagnosed with smaller tests. As such, igt_cs_tlb is superceded by and obsoleted by gt_tlb, meaning it can be removed. Signed-off-by:
Jonathan Cavitt <jonathan.cavitt@intel.com> Reviewed-by:
Nirmoy Das <nirmoy.das@intel.com> Reviewed-by:
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Chris Wilson authored
i915_gem_object_create_lmem_from_data() lacks the flush of the data written to lmem to ensure the object is marked as dirty and the writes flushed to the backing store. Once created, we can immediately release the obj->mm.mapping caching of the vmap. Fixes: 7acbbc7c ("drm/i915/guc: put all guc objects in lmem when available") Cc: Matthew Auld <matthew.auld@intel.com> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Andi Shyti <andi.shyti@linux.intel.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: John Harrison <John.C.Harrison@Intel.com> Signed-off-by:
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Andi Shyti authored
In the process of renaming all instances of 'dev_priv' to 'i915', start using 'i915' within the 'drm_i915_file_private' structure. Signed-off-by:
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- 21 Mar, 2023 4 commits
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Andi Shyti authored
The commit 82a149a6 ("drm/i915/gt: move remaining debugfs interfaces into gt") moved gt-related debugfs files in the gtX/ directories to operate on individual gt's. However, the original files were only functioning on the root GT (GT 0) and have been left in the same location to maintain compatibility with userspace users. Add multiplexing functionality to the higher directories' files. This enables the operations to be performed on all the GTs with a single write. In the case of reads, the files provide an or'ed value across all the tiles. Signed-off-by:
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Andi Shyti authored
To support multi-GT configurations, we need to generate independent debug files for each GT. To achieve this create a separate directory for each GT under the debugfs directory. For instance, in a system with two GTs, the debugfs structure would look like this: /sys/kernel/debug/dri └── 0 ├── gt0 │ ├── drpc │ ├── engines │ ├── forcewake │ ├── frequency │ └── rps_boost └── gt1 : ├── drpc : ├── engines : ├── forcewake ├── frequency └── rps_boost Signed-off-by: -
Gustavo A. R. Silva authored
Zero-length arrays as fake flexible arrays are deprecated and we are moving towards adopting C99 flexible-array members instead. Address the following warning found with GCC-13 and -fstrict-flex-arrays=3 enabled: drivers/gpu/drm/i915/gem/i915_gem_context.c: In function ‘set_proto_ctx_engines.isra’: drivers/gpu/drm/i915/gem/i915_gem_context.c:769:41: warning: array subscript n is outside array bounds of ‘struct i915_engine_class_instance[0]’ [-Warray-bounds=] 769 | if (copy_from_user(&ci, &user->engines[n], sizeof(ci))) { | ^~~~~~~~~~~~~~~~~ ./include/uapi/drm/i915_drm.h:2494:43: note: while referencing ‘engines’ 2494 | struct i915_engine_class_instance engines[0]; This helps with the ongoing efforts to tighten the FORTIFY_SOURCE routines on memcpy() and help us make progress towards globally enabling -fstrict-flex-arrays=3 [1]. Link: https://github.com/KSPP/linux/issues/21 Link: https://github.com/KSPP/linux/issues/271 Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [1] Signed-off-by:Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
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Ashutosh Dixit authored
Expose intel_rps_read_actual_frequency_fw to read the actual freq without taking forcewake for use by PMU. The code is refactored to use a common set of functions across sysfs and PMU. Using common functions with sysfs in PMU solves the issues of missing support for MTL and missing support for older generations (prior to Gen6). It also future proofs the PMU where sometimes code has been updated for sysfs and PMU has been missed. v2: Remove runtime_pm_if_in_use from read_actual_frequency_fw (Tvrtko) v3: (Tvrtko) - Remove goto in __read_cagf - Unexport intel_rps_get_cagf and intel_rps_read_punit_req Fixes: 22009b6d ("drm/i915/mtl: Modify CAGF functions for MTL") Link: https://gitlab.freedesktop.org/drm/intel/-/issues/8280Signed-off-by:
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- 17 Mar, 2023 4 commits
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Vinay Belgaumkar authored
Use hex format so that it is easier to decode. Fixes: fe597966 ("drm/i915/debugfs: Add perf_limit_reasons in debugfs") Signed-off-by:
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Fei Yang authored
On MTL, objects allocated through i915_gem_object_create_internal() are mapped as uncached in GPU by default because HAS_LLC is false. However in the live_hwsp_read selftest these watcher objects are mapped as WB on CPU side. The conseqence is that the updates done by the GPU are not immediately visible to CPU, thus the selftest is randomly failing due to the stale data in CPU cache. Solution can be either setting WC for CPU + UC for GPU, or WB for CPU + 1-way coherent WB for GPU. To keep the consistency, let's simply inherit the same cache settings from the timeline, which is WB for CPU + 1-way coherent WB for GPU, because this test is supposed to emulate the behavior of the timeline anyway. Signed-off-by:
Fei Yang <fei.yang@intel.com> Reviewed-by:
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Andrzej Hajda authored
Probe pseudo errors should be injected only in places where real errors can be encountered, otherwise unwinding code can be broken. Placing intel_uc_init_late before i915_inject_probe_error violated this rule, resulting in following bug: __intel_gt_disable:655 GEM_BUG_ON(intel_gt_pm_is_awake(gt)) Fixes: 481d458c ("drm/i915/guc: Add golden context to GuC ADS") Acked-by:
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Tvrtko Ursulin authored
No need to look at the mask of present engines when we already have a count stored ever since e2d0ff35 ("drm/i915: Count engine instances per uabi class"). Signed-off-by:
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- 16 Mar, 2023 4 commits
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Andrzej Hajda authored
Write-combining memory allows speculative reads by CPU. ggtt->error_capture is WC mapped to CPU, so CPU/MMU can try to prefetch memory beyond the error_capture, ie it tries to read memory pointed by next PTE in GGTT. If this PTE points to invalid address DMAR errors will occur. This behaviour was observed on ADL and RPL platforms. To avoid it, guard scratch page should be added after error_capture. The patch fixes the most annoying issue with error capture but since WC reads are used also in other places there is a risk similar problem can affect them as well. v2: - modified commit message (I hope the diagnosis is correct), - added bug checks to ensure scratch is initialized on gen3 platforms. CI produces strange stacktrace for it suggesting scratch[0] is NULL, to be removed after resolving the issue with gen3 platforms. v3: - removed bug checks, replaced with gen check. v4: - change code for scratch page insertion to support all platforms, - add info in commit message there could be more similar issues v5: - check for nop_clear_range instead of gen8 (Tvrtko), - re-insert scratch pages on resume (Tvrtko) v6: - use scratch_range callback to set scratch pages (Chris) Reviewed-by: -
Andrzej Hajda authored
The callback will be responsible for setting scratch page PTEs for specified range. In contrast to clear_range it cannot be optimized to nop. It will be used by code adding guard pages. Reviewed-by:
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Andrzej Hajda authored
Tests on DG2 machines show that releasing forcewakes during BAR resize results later in forcewake ack timeouts. Since forcewakes can be realeased asynchronously the simplest way to prevent it is to get all forcewakes for duration of BAR resizing. v2: hold rpm as well during resizing (Rodrigo) Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/6530 Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/7853Reviewed-by:
Rodrigo Vivi <rodrigo.vivi@intel.com> Acked-by:
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Nirmoy Das authored
Change the function doc to reflect updated name. v2: un-kerneldoc the comment(Matt). :s/engines_init_common/engine_init_common(Andi) Cc: Andi Shyti <andi.shyti@linux.intel.com> Cc: Matt Roper <matthew.d.roper@intel.com> Signed-off-by:
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- 15 Mar, 2023 1 commit
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Jani Nikula authored
There's no need for any of these to be mutable, constify: drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000020 files.0 drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000050 files.1 drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 preempt_timeout_attr drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 timeslice_duration_attr drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 timeslice_duration_def drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 preempt_timeout_def drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 max_spin_def drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 stop_timeout_def drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 heartbeat_interval_def drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 name_attr drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 class_attr drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 inst_attr drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 mmio_attr drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 caps_attr drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 all_caps_attr drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 max_spin_attr drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 stop_timeout_attr drivers/gpu/drm/i915/gt/sysfs_engines.o: .data 0000000000000038 heartbeat_interval_attr Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Reviewed-by:
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- 14 Mar, 2023 2 commits
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Nirmoy Das authored
debug_active_activate() expected ref->count to be zero which is not true anymore as __i915_active_activate() calls debug_active_activate() after incrementing the count. v2: No need to check for "ref->count == 1" as __i915_active_activate() already make sure of that(Janusz). References: https://gitlab.freedesktop.org/drm/intel/-/issues/6733 Fixes: 04240e30 ("drm/i915: Skip taking acquire mutex for no ref->active callback") Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Thomas Hellström <thomas.hellstrom@intel.com> Cc: Andi Shyti <andi.shyti@linux.intel.com> Cc: intel-gfx@lists.freedesktop.org Cc: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com> Cc: <stable@vger.kernel.org> # v5.10+ Signed-off-by:
Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com> Reviewed-by:
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John Harrison authored
The seqno value actually written out to memory is no longer in the regular HWSP. Instead, it is now in its own private timeline buffer. Thus, it is no longer visible in an error capture. So, explicitly read the value and include that in the capture. v2: %d -> %u (Alan) Signed-off-by:
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