- 05 Apr, 2022 1 commit
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Tvrtko Ursulin authored
Tracking DRM clients more explicitly will allow later patches to accumulate past and current GPU usage in a centralised place and also consolidate access to owning task pid/name. Unique client id is also assigned for the purpose of distinguishing/ consolidating between multiple file descriptors owned by the same process. v2: Chris Wilson: * Enclose new members into dedicated structs. * Protect against failed sysfs registration. v3: * sysfs_attr_init. v4: * Fix for internal clients. v5: * Use cyclic ida for client id. (Chris) * Do not leak pid reference. (Chris) * Tidy code with some locals. v6: * Use xa_alloc_cyclic to simplify locking. (Chris) * No need to unregister individial sysfs files. (Chris) * Rebase on top of fpriv kref. * Track client closed status and reflect in sysfs. v7: * Make drm_client more standalone concept. v8: * Simplify sysfs show. (Chris) * Always track name and pid. v9: * Fix cyclic id assignment. v10: * No need for a mutex around xa_alloc_cyclic. * Refactor sysfs into own function. * Unregister sysfs before freeing pid and name. * Move clients setup into own function. v11: * Call clients init directly from driver init. (Chris) v12: * Do not fail client add on id wrap. (Maciej) v13 (Lucas): Rebase. v14: * Dropped sysfs bits. v15: * Dropped tracking of pid/ and name. * Dropped RCU freeing of the client object. Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> # v11 Reviewed-by: Aravind Iddamsetty <aravind.iddamsetty@intel.com> # v11 Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220401142205.3123159-2-tvrtko.ursulin@linux.intel.com
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- 30 Mar, 2022 1 commit
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José Roberto de Souza authored
New DG2 workaround added to specification. BSpec: 54077 BSpec: 66622 BSpec: 54833 Cc: Matt Roper <matthew.d.roper@intel.com> Signed-off-by:
José Roberto de Souza <jose.souza@intel.com> Reviewed-by:
Matt Roper <matthew.d.roper@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220325142249.81443-1-jose.souza@intel.com
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- 29 Mar, 2022 3 commits
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Matthew Auld authored
Move the sanity check that both src and dst are never both system memory, which should never happen on discrete, and likely means we have a bug. The only exception is on integrated where we trigger this path in the selftests. Signed-off-by:
Matthew Auld <matthew.auld@intel.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Cc: Nirmoy Das <nirmoy.das@linux.intel.com> Reviewed-by:
Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by:
Nirmoy Das <nirmoy.das@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220324172143.377104-2-matthew.auld@intel.com
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Matthew Auld authored
We only need this when allocating device local-memory, where this influences the drm_buddy. Currently there is some funny behaviour where an "in limbo" system memory object is lacking the relevant placement flags etc. before we first allocate the ttm_tt, leading to ttm performing a move when not needed, since the current placement is seen as not compatible. Suggested-by:
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Fei Yang authored
GPU hangs have been observed when multiple engines write to the same aux_inv register at the same time. To avoid this each engine should only invalidate its own auxiliary table. The function gen12_emit_flush_xcs() currently invalidate the auxiliary table for all engines because the rq->engine is not necessarily the engine eventually carrying out the request, and potentially the engine could even be a virtual one (with engine->instance being -1). With the MMIO remap feature, we can actually set bit 17 of MI_LRI instruction and let the hardware to figure out the local aux_inv register at runtime to avoid invalidating auxiliary table for all engines. Bspec: 45728 v2: Invalidate AUX table for indirect context as well. Cc: Stuart Summers <stuart.summers@intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Signed-off-by:
Chris Wilson <chris.p.wilson@intel.com> Signed-off-by:
Fei Yang <fei.yang@intel.com> Reviewed-by:
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- 28 Mar, 2022 1 commit
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CQ Tang authored
lmem_size is used to limit the amount of lmem for testing purposes. Default is to use hardware available lmem size. Signed-off-by:
CQ Tang <cq.tang@intel.com> Signed-off-by:
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- 25 Mar, 2022 2 commits
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Daniele Ceraolo Spurio authored
On error the "new" allocation is not freed, so add the required kfree. Fixes: 247f8071 ("drm/i915/guc: Pre-allocate output nodes for extraction") Signed-off-by:
Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Alan Previn <alan.previn.teres.alexis@intel.com> Cc: John Harrison <john.c.harrison@intel.com> Reviewed-by:
Nirmoy Das <nirmoy.das@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220324000439.2370440-1-daniele.ceraolospurio@intel.com
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Tvrtko Ursulin authored
UAPI with absolutely no documentation should not have been added - clarify blob format and content will be described externally. Fixes: 78e1fb31 ("drm/i915/uapi: Add query for hwconfig blob") Signed-off-by:
Jordan Justen <jordan.l.justen@intel.com> Cc: Jon Bloomfield <jon.bloomfield@intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: John Harrison <john.c.harrison@intel.com> Cc: Jon Ewins <jon.ewins@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20220325094916.2186367-1-tvrtko.ursulin@linux.intel.com [tursulin: Fixed spelling s/meading/meaning/.]
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- 22 Mar, 2022 20 commits
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Alan Previn authored
Print the GuC captured error state register list (string names and values) when gpu_coredump_state printout is invoked via the i915 debugfs for flushing the gpu error-state that was captured prior. Since GuC could have reported multiple engine register dumps in a single notification event, parse the captured data (appearing as a stream of structures) to identify each dump as a different 'engine-capture-group-output'. Finally, for each 'engine-capture-group-output' that is found, verify if the engine register dump corresponds to the engine_coredump content that was previously populated by the i915_gpu_coredump function. That function would have copied the context's vma's including the bacth buffer during the G2H-context-reset notification that occurred earlier. Perform this verification check by comparing guc_id, lrca and engine- instance obtained from the 'engine-capture-group-output' vs a copy of that same info taken during i915_gpu_coredump. If they match, then print those vma's as well (such as the batch buffers). NOTE: the output format was verified using the gem_exec_capture IGT test. Signed-off-by:
Alan Previn <alan.previn.teres.alexis@intel.com> Reviewed-by:
Lucas De Marchi <lucas.demarchi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220321164527.2500062-14-alan.previn.teres.alexis@intel.com
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Alan Previn authored
Add a flags parameter through all of the coredump creation functions. Add a bitmask flag to indicate if the top level gpu_coredump event is triggered in response to a GuC context reset notification. Using that flag, ensure all coredump functions that read or print mmio-register values related to work submission or command-streamer engines are skipped and replaced with a calls guc-capture module equivalent functions to retrieve or print the register dump. While here, split out display related register reading and printing into its own function that is called agnostic to whether GuC had triggered the reset. For now, introduce an empty printing function that can filled in on a subsequent patch just to handle formatting. Signed-off-by:
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Alan Previn authored
In the rare but possible scenario where we are in the midst of multiple GuC error-capture (and engine reset) events and the user also triggers a forced full GT reset or the internal watchdog triggers the same, intel_guc_submission_reset_prepare's call to flush_work(&guc->ct.requests.worker) can cause the G2H message handler to trigger intel_guc_capture_store_snapshot upon receiving new G2H error-capture notifications. This can happen despite the prior call to disable_submission(guc);. However, there's no race-free way for intel_guc_capture_store_snapshot to know that we are in the midst of a reset. That said, we can never dynamically allocate the output nodes in this handler. Thus, we shall pre-allocate a fixed number of empty nodes up front (at the time of ADS registration) that we can consume from or return to an internal cached list of nodes. Signed-off-by:
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Alan Previn authored
- Upon the G2H Notify-Err-Capture event, parse through the GuC Log Buffer (error-capture-subregion) and generate one or more capture-nodes. A single node represents a single "engine- instance-capture-dump" and contains at least 3 register lists: global, engine-class and engine-instance. An internal link list is maintained to store one or more nodes. - Because the link-list node generation happen before the call to i915_gpu_codedump, duplicate global and engine-class register lists for each engine-instance register dump if we find dependent-engine resets in a engine-capture-group. - When i915_gpu_coredump calls into capture_engine, (in a subsequent patch) we detach the matching node (guc-id, LRCA, etc) from the link list above and attach it to i915_gpu_coredump's intel_engine_coredump structure when have matching LRCA/guc-id/engine-instance. Additional notes to be aware of: - GuC generates the error capture dump into the GuC log buffer but this buffer is one big log buffer with 3 independent subregions within it. Each subregion is populated with different content and used in different ways and timings but all regions operate behave as independent ring buffers. Each guc-log subregion (general-logs, crash-dump and error- capture) has it's own guc_log_buffer_state that contain independent read and write pointers. Signed-off-by:
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Alan Previn authored
Add intel_guc_capture_output_min_size_est function to provide a reasonable minimum size for error-capture region before allocating the shared buffer. Signed-off-by:
Matthew Brost <matthew.brost@intel.com> Signed-off-by:
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Alan Previn authored
GuC log buffer regions for debug-log-events, crash-dumps and error-state-capture are all part of a single bo allocation that also includes the guc_log_buffer_state structures. Now that we support it, increase the size allocation for error-capture. Since the error-capture region is accessed at non-deterministic times (as part of GuC triggered context reset) while debug-log- events region is accessed as part of relay logging or during debugfs triggered dumps, move the mapping and unmapping of the shared buffer into intel_guc_log_create and intel_guc_log_destroy so that it's always mapped throughout life of GuC operation. Additionally, while here, update the guc log region layout diagram to follow the order according to the enum definition as per the GuC interface. NOTE: A future effort to visit (part of baseline code) is that buf_addr should be updated to be a io_sys_map and use the io_sys_map wrapper functions to access the various GuC log buffer regions. Signed-off-by:
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Alan Previn authored
For the sake of better code readibility, change previous relay logging function names with "capture_logs" to "copy_debug_logs" to differentiate from error capture functions that will use a different region of the same buffer. Signed-off-by:
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Alan Previn authored
Add GuC's error capture output structures and definitions as how they would appear in GuC log buffer's error capture subregion after an error state capture G2H event notification. Signed-off-by:
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Alan Previn authored
Abstract out a Gen9 register list as the default for all other platforms we don't yet formally support GuC submission on. Signed-off-by:
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Alan Previn authored
Add additional DG2 registers for GuC error state capture. Signed-off-by:
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Alan Previn authored
Add the ability for runtime allocation and freeing of steered register list extentions that depend on the detected HW config fuses. Signed-off-by:
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Alan Previn authored
Add device specific tables and register lists to cover different engines class types for GuC error state capture for XE_LP products. Signed-off-by:
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Alan Previn authored
Update GuC ADS size allocation to include space for the lists of error state capture register descriptors. Then, populate GuC ADS with the lists of registers we want GuC to report back to host on engine reset events. This list should include global, engine-class and engine-instance registers for every engine-class type on the current hardware. Ensure we allocate a persistent store for the register lists that are populated into ADS so that we don't need to allocate memory during GT resets when GuC is reloaded and ADS population happens again. NOTE: Start with a sample static table of register lists to layout the framework before adding real registers in subsequent patch. This static register tables are a different format from the ADS populated list. Signed-off-by:
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Michael Cheng authored
Replace all occurrence of cache_clflush_range with drm_clflush_virt_range. This will prevent compile errors on non-x86 platforms. Signed-off-by:
Michael Cheng <michael.cheng@intel.com> Reviewed-by:
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Michael Cheng authored
Use drm_clflush_virt_range instead of clflushopt and remove the memory barrier, since drm_clflush_virt_range takes care of that. v2(Michael Cheng): Use sizeof(*addr) instead of sizeof(addr) to get the actual size of the page. Thanks to Matt Roper for pointing this out. Signed-off-by:
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Michael Cheng authored
Use drm_clflush_virt_range instead of directly invoking clflush. This will prevent compiler errors when building for non-x86 architectures. v2(Michael Cheng): Remove extra clflush v3(Michael Cheng): Remove memory barrier since drm_clflush_virt_range takes care of it. v4(Michael Cheng): Get the size of value and not the size of the pointer when passing in execlists->csb_write. Thanks to Matt Roper for pointing this out. Signed-off-by:
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Michael Cheng authored
Drop invalidate_csb_entries and directly call drm_clflush_virt_range. This allows for one less function call, and prevent complier errors when building for non-x86 architectures. v2(Michael Cheng): Drop invalidate_csb_entries function and directly invoke drm_clflush_virt_range. Thanks to Tvrtko for the sugguestion. v3(Michael Cheng): Use correct parameters for drm_clflush_virt_range. Thanks to Tvrtko for pointing this out. v4(Michael Cheng): Simplify &execlists->csb_status[0] to execlists->csb_status. Thanks to Matt Roper for the suggestion. Signed-off-by:
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Michael Cheng authored
Re-work intel_write_status_page to use drm_clflush_virt_range. This will prevent compiler errors when building for non-x86 architectures. Signed-off-by:
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Jani Nikula authored
The initialization is there only to silence the compiler, but use the correct initializer for i915_reg_t. Cc: Lucas De Marchi <lucas.demarchi@intel.com> Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Reviewed-by:
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Andi Shyti authored
Change functions that always return '0' to be void type. Signed-off-by:
Andi Shyti <andi.shyti@linux.intel.com> Reviewed-by:
Maciej Patelczyk <maciej.patelczyk@intel.com> Signed-off-by:
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- 21 Mar, 2022 8 commits
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Vivek Kasireddy authored
On platforms capable of allowing 8K (7680 x 4320) modes, pinning 2 or more framebuffers/scanout buffers results in only one that is mappable/ fenceable. Therefore, pageflipping between these 2 FBs where only one is mappable/fenceable creates latencies large enough to miss alternate vblanks thereby producing less optimal framerate. This mainly happens because when i915_gem_object_pin_to_display_plane() is called to pin one of the FB objs, the associated vma is identified as misplaced -- because there is no space for it in the aperture -- and therefore i915_vma_unbind() is called which unbinds and evicts it. This misplaced vma gets subseqently pinned only when i915_gem_object_ggtt_pin_ww() is called without PIN_MAPPABLE. This whole thing results in a latency of ~10ms and happens every other repaint cycle. Therefore, to fix this issue, we just ensure that the misplaced VMA does not get evicted when we try to pin it with PIN_MAPPABLE -- by returning early if the mappable/fenceable flag is not set. Testcase: Running Weston and weston-simple-egl on an Alderlake_S (ADLS) platform with a 8K@60 mode results in only ~40 FPS (compared to ~59 FPS with this patch). Since upstream Weston submits a frame ~7ms before the next vblank, the latencies seen between atomic commit and flip event are 7, 24 (7 + 16.66), 7, 24..... suggesting that it misses the vblank every other frame. Here is the ftrace snippet that shows the source of the ~10ms latency: i915_gem_object_pin_to_display_plane() { 0.102 us | i915_gem_object_set_cache_level(); i915_gem_object_ggtt_pin_ww() { 0.390 us | i915_vma_instance(); 0.178 us | i915_vma_misplaced(); i915_vma_unbind() { __i915_active_wait() { 0.082 us | i915_active_acquire_if_busy(); 0.475 us | } intel_runtime_pm_get() { 0.087 us | intel_runtime_pm_acquire(); 0.259 us | } __i915_active_wait() { 0.085 us | i915_active_acquire_if_busy(); 0.240 us | } __i915_vma_evict() { ggtt_unbind_vma() { gen8_ggtt_clear_range() { 10507.255 us | } 10507.689 us | } 10508.516 us | } v2: - Expand the code comments to describe the ping-pong issue. Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Reviewed-by:Vivek Kasireddy <vivek.kasireddy@intel.com> Signed-off-by:
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Sujaritha Sundaresan authored
Throttling here refers to the GT frequency being clipped. Each of the throttle reason attributes will have a 0 or 1 value depending upon whether there is throttling and also the specific reason for it. The following is a brief description of the sysfs throttle frequency attributes added: - throttle_reason_status: when set indicates that there is GT frequency clipping. - throttle_reason_pl1: when set indicates that PBM PL1 (platform or package PL1) has caused GT frequency clipping. - throttle_reason_pl2: when set indicates that PBM PL2 or PL3 (platform or package PL2 or PL3) has caused GT frequency clipping. - throttle_reason_pl4: when set indicates that PL4 or IccMax has caused GT frequency clipping. - throttle_reason_thermal: when set indicates that Thermal event has caused GT frequency clipping. - throttle_reason_prochot: when set indicates that PROCHOT# has caused GT frequency clipping. - throttle_reason_ratl: when set indicates that Running Average Thermal Limit has caused GT frequency clipping. - throttle_reason_vr_thermalert: when set indicates that Hot VR (any processor VR) has caused GT frequency clipping. - throttle_reason_vr_tdc: when set indicates that VR TDC (Thermal Design Current) has caused GT frequency clipping. Signed-off-by:
Sujaritha Sundaresan <sujaritha.sundaresan@intel.com> Signed-off-by:
Andrzej Hajda <andrzej.hajda@intel.com> Signed-off-by:
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Andi Shyti authored
Now tiles have their own sysfs interfaces under the gt/ directory. Because RPS is a property that can be configured on a tile basis, then each tile should have its own interface The new sysfs structure will have a similar layout for the 4 tile case: /sys/.../card0 ├── gt │ ├── gt0 │ │ ├── id │ │ ├── rc6_enable │ │ ├── rc6_residency_ms │ │ ├── rps_act_freq_mhz │ │ ├── rps_boost_freq_mhz │ │ ├── rps_cur_freq_mhz │ │ ├── rps_max_freq_mhz │ │ ├── rps_min_freq_mhz │ │ ├── rps_RP0_freq_mhz │ │ ├── rps_RP1_freq_mhz │ │ └── rps_RPn_freq_mhz . . . . . . │ └── gtN │ ├── id │ ├── rc6_enable │ ├── rc6_residency_ms │ ├── rps_act_freq_mhz │ ├── rps_boost_freq_mhz │ ├── rps_cur_freq_mhz │ ├── rps_max_freq_mhz │ ├── rps_min_freq_mhz │ ├── rps_RP0_freq_mhz │ ├── rps_RP1_freq_mhz │ └── rps_RPn_freq_mhz ├── gt_act_freq_mhz -+ ├── gt_boost_freq_mhz | ├── gt_cur_freq_mhz | Original interface ├── gt_max_freq_mhz +─-> kept as existing ABI; ├── gt_min_freq_mhz | it points to gt0/ ├── gt_RP0_freq_mhz | ├── gt_RP1_freq_mhz | └── gt_RPn_freq_mhz -+ The existing interfaces have been kept in their original location to preserve the existing ABI. They act on all the GTs: when writing they loop through all the GTs and write the information on each interface. When reading they provide the average value from all the GTs. This patch is not really adding exposing new interfaces (new ABI) other than adapting the existing one to more tiles. In any case this new set of interfaces will be a basic tool for system managers and administrators when using i915. Signed-off-by: -
Andi Shyti authored
Now tiles have their own sysfs interfaces under the gt/ directory. Because RC6 is a property that can be configured on a tile basis, then each tile should have its own interface The new sysfs structure will have a similar layout for the 4 tile case: /sys/.../card0 ├── gt │ ├── gt0 │ │ ├── id │ │ ├── rc6_enable │ │ ├── rc6_residency_ms . . . . . . . . │ └── gtN │ ├── id │ ├── rc6_enable │ ├── rc6_residency_ms │ . │ . │ └── power/ -+ ├── rc6_enable | Original interface ├── rc6_residency_ms +-> kept as existing ABI; . | it multiplexes over . | the GTs -+ The existing interfaces have been kept in their original location to preserve the existing ABI. They act on all the GTs: when reading they provide the average value from all the GTs. This patch is not really adding exposing new interfaces (new ABI) other than adapting the existing one to more tiles. In any case this new set of interfaces will be a basic tool for system managers and administrators when using i915. Signed-off-by: -
Andi Shyti authored
Now that we have tiles we want each of them to have its own interface. A directory "gt/" is created under "cardN/" that will contain as many diroctories as the tiles. In the coming patches tile related interfaces will be added. For now the sysfs gt structure simply has an id interface related to the current tile count. The directory structure will follow this scheme: /sys/.../card0 └── gt ├── gt0 │ └── id : : └─- gtN └── id This new set of interfaces will be a basic tool for system managers and administrators when using i915. Signed-off-by: -
Tvrtko Ursulin authored
On a multi-tile platform, each tile has its own registers + GGTT space, and BAR 0 is extended to cover all of them. Up to four GTs are supported in i915->gt[], with slot zero shadowing the existing i915->gt0 to enable source compatibility with legacy driver paths. A for_each_gt macro is added to iterate over the GTs and will be used by upcoming patches that convert various parts of the driver to be multi-gt aware. Only the primary/root tile is initialized for now; the other tiles will be detected and plugged in by future patches once the necessary infrastructure is in place to handle them. Signed-off-by:
Abdiel Janulgue <abdiel.janulgue@gmail.com> Signed-off-by:
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Andi Shyti authored
The "gt_is_root(struct intel_gt *gt)" helper return true if the gt is the root gt, which means that its id is 0. Return false otherwise. Suggested-by:
Michal Wajdeczko <michal.wajdeczko@intel.com> Signed-off-by:
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Andi Shyti authored
With the upcoming multitile support each tile will have its own local memory. Mark the current LMEM with the suffix '0' to emphasise that it belongs to the root tile. Suggested-by:
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- 18 Mar, 2022 4 commits
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Matthew Brost authored
Add logical mapping for VDBOXs. This mapping is required for split-frame workloads, which otherwise fail with 00000000-F8C53528: [GUC] 0441-INVALID_ENGINE_SUBMIT_MASK ... if the application is using the logical id to reorder the engines and then using it for the batch buffer submission. It's not a big problem on media version 11 and 12 as they have only 2 instances of VCS and the logical to physical mapping is monotonically increasing - if the application is not using the logical id. Changing it for the previous platforms allows the media driver implementation for the next ones (12.50 and above) to be the same, checking the logical id. It should also not introduce any bug for the old versions of userspace not checking the id. The mapping added here is the complete map needed by XEHPSDV. Previous platforms with only 2 instances will just use a partial map and should still work. v2: Remove static from map variable (José) Cc: Matt Roper <matthew.d.roper@intel.com> Signed-off-by:
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Lucas De Marchi authored
Earlier versions of commit a5b7ef27 ("drm/i915: Add struct to hold IP version") named "ver" as "arch" and then when it was renamed it missed the rename on MEDIA_VER_FULL() since it it's currently not used. Fixes: a5b7ef27 ("drm/i915: Add struct to hold IP version") Cc: José Roberto de Souza <jose.souza@intel.com> Cc: Matt Roper <matthew.d.roper@intel.com> Signed-off-by:
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Akeem G Abodunrin authored
Starting with DG2, preemption can no longer be controlled using userspace on a per-context basis. Instead, the hardware only allows us to enable or disable preemption in a global, system-wide basis. Also, we lose the ability to specify the preemption granularity (such as batch-level vs command-level vs object-level). v2 (MattR): - Move debugfs interface to a separate patch. (Jani) v3 (MattR): - Drop the debugfs support completely for now. Cc: Matt Roper <matthew.d.roper@intel.com> Cc: Prathap Kumar Valsan <prathap.kumar.valsan@intel.com> Cc: John Harrison <john.c.harrison@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Signed-off-by:
Akeem G Abodunrin <akeem.g.abodunrin@intel.com> Signed-off-by:
Anusha Srivatsa <anusha.srivatsa@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220318021051.2073847-1-matthew.d.roper@intel.com
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Rodrigo Vivi authored
In this interface i915 is returning a blob of data which it receives from the guc software. This blob provides some useful data about the hardware for drivers. The format of this blob will be documented in the Programmer Reference Manuals when released. Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Cc: Kenneth Graunke <kenneth.w.graunke@intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Slawomir Milczarek <slawomir.milczarek@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by:
Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by:
John Harrison <John.C.Harrison@Intel.com> Reviewed-by:
Jon Bloomfield <jon.bloomfield@intel.com> Signed-off-by:
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