- 23 May, 2024 5 commits
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Rodrigo Vivi authored
Prepare power-well and DC handling for a full power lost during D3Cold, then sanitize it upon D3->D0. Otherwise we get a bunch of state mismatch. Ideally we could leave DC9 enabled and wouldn't need to move DC9->DC0 on every runtime resume, however, the disable_DC is part of the power-well checks and intrinsic to the dc_off power well. In the future that can be detangled so we can have even bigger power savings. But for now, let's focus on getting a D3Cold, which saves much more power by itself. v2: create new functions to avoid full-suspend-resume path, which would result in a deadlock between xe_gem_fault and the modeset-ioctl. v3: Only avoid the full modeset to avoid the race, for a more robust suspend-resume. Cc: Anshuman Gupta <anshuman.gupta@intel.com> Cc: Uma Shankar <uma.shankar@intel.com> Tested-by:
Francois Dugast <francois.dugast@intel.com> Reviewed-by:
Anshuman Gupta <anshuman.gupta@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240522170105.327472-5-rodrigo.vivi@intel.comSigned-off-by:
Rodrigo Vivi <rodrigo.vivi@intel.com>
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Rodrigo Vivi authored
In the regular use case scenario, user space will create a VM, and keep it alive for the entire duration of its workload. For the regular desktop cases, it means that the VM is alive even on idle scenarios where display goes off. This is unacceptable since this would entirely block runtime PM indefinitely, blocking deeper Package-C state. This would be a waste drainage of power. Limit the VM protection solely for long-running workloads that are not protected by the scheduler references. By design, run_job for long-running workloads returns NULL and the scheduler drops all the references of it, hence protecting the VM for this case is necessary. v2: Update commit message to a more imperative language and to reflect why the VM protection is really needed. Also add a comment in the code to let the reason visbible. v3: Remove vma_access case and the mentions to mmap. Mmap cases are already protected by the gem page fault. Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Matthew Brost <matthew.brost@intel.com> Tested-by:Matthew Brost <matthew.brost@intel.com> Reviewed-by:
Thomas Hellström <thomas.hellstrom@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240522170105.327472-4-rodrigo.vivi@intel.comSigned-off-by:
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Rodrigo Vivi authored
Limit the protection only during moments of actual job execution, and introduce protection for guc submit fini, which is currently unprotected due to the absence of exec_queue life protection. In the regular use case scenario, user space will create an exec queue, and keep it alive to reuse that until it is done with that kind of workload. For the regular desktop cases, it means that the exec_queue is alive even on idle scenarios where display goes off. This is unacceptable since this would entirely block runtime PM indefinitely, blocking deeper Package-C state. This would be a waste drainage of power. Cc: Matthew Brost <matthew.brost@intel.com> Tested-by:
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Rodrigo Vivi authored
Let's be clear on what it is actually doing and align with xe_pm_runtime_get_if_active doc style. Tested-by:
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Rodrigo Vivi authored
Current callers of this function are already taking the result to a boolean and using in an if. It might be a problem because current function might return negative error codes on failure, without increasing the reference counter. In this scenario we could end up with extra 'put' call ending in unbalanced scenarios. Let's fix it, while aligning with the current xe_pm_get_if_in_use style. Tested-by:
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- 22 May, 2024 29 commits
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Niranjana Vishwanathapura authored
Release the submission_state lock if alloc_guc_id() fails. v2: Add Fixes tag and CC stable kernel Fixes: dd08ebf6 ("drm/xe: Introduce a new DRM driver for Intel GPUs") Cc: <stable@vger.kernel.org> # v6.8+ Signed-off-by:
Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com> Reviewed-by:
Nirmoy Das <nirmoy.das@intel.com> Reviewed-by:
José Roberto de Souza <jose.souza@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240521201711.4934-1-niranjana.vishwanathapura@intel.com
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Michal Wajdeczko authored
When running in execlist mode (using force_execlist=1 modparam) we incorrectly select the error path in xe_uc_init(), leading to an unwanted error message like this: [ ] xe 0000:00:00.0: [drm] *ERROR* GT0: Failed to initialize uC (0000000000000000) Fix that by doing early return like we do in other similar cases. Signed-off-by:
Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Reviewed-by:
Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240521114857.712-1-michal.wajdeczko@intel.com
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Matthew Auld authored
i915 display calls this when releasing the drm_device, match this also in xe by using drmm. intel_display_device_remove() is freeing purely software state for the drm_device. v2: fix build error Signed-off-by:
Matthew Auld <matthew.auld@intel.com> Cc: Andrzej Hajda <andrzej.hajda@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by:
Andrzej Hajda <andrzej.hajda@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240522102143.128069-36-matthew.auld@intel.com
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Matthew Auld authored
Unclear why we call this twice. Signed-off-by:
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Matthew Auld authored
Match the i915 display handling here with calling both no_irq and noaccel when removing the device. Signed-off-by:
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Matthew Auld authored
Set our various mmio mappings to NULL. This should make it easier to catch something rogue trying to mess with mmio after device removal. For example, we might unmap everything and then start hitting some mmio address which has already been unmamped by us and then remapped by something else, causing all kinds of carnage. Signed-off-by:
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Matthew Auld authored
Not valid to touch mmio once the device is removed, so make sure we unmap on removal and not just when driver instance goes away. Also set the mmio pointers to NULL to hopefully catch such issues more easily. Signed-off-by:
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Matthew Auld authored
No need to hand roll the onion unwind here, just move gt_remove over to devm which will already have the correct ordering. Signed-off-by:
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Matthew Auld authored
Have a cleaner separation between hw vs sw. v2: Fix missing return Signed-off-by:
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Matthew Auld authored
Here we are using drmm to ensure we release the coredump when unloading the module, however the coredump is very much tied to the struct device underneath. We can see this when we hotunplug the device, for which we have already got a coredump attached. In such a case the coredump still remains and adding another is not possible. However we still register the release action via xe_driver_devcoredump_fini(), so in effect two or more releases for one dump. The other consideration is that the coredump state is embedded in the xe_driver instance, so technically once the drmm release action fires we might free the coredumpe state from a different driver instance, assuming we have two release actions and they can race. Rather use devm here to remove the coredump when the device is released. References: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1679Signed-off-by:
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Matthew Auld authored
Disable GuC submission when removing the device. Signed-off-by:
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Matthew Auld authored
Should be called when driver is removed, not when this particular driver instance is destroyed. Signed-off-by:
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Matthew Auld authored
Makes sense to trigger this when the device is removed. Signed-off-by:
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Matthew Auld authored
Make it clear that is about cleaning up the HW/FW side, and not software state. Signed-off-by:
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Matthew Auld authored
Here we are touching the HW/GuC and presumably this should happen when the device is removed. Currently if you hotunplug the device this is skipped if there is already open driver instance. Signed-off-by:
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Matthew Auld authored
Make it clear that is about cleaning up the HW/FW side, and not software state. Signed-off-by:
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Matthew Auld authored
Make sure to actually call this when the device is removed. Currently we only trigger it when the driver instance goes away, but that doesn't work too well with hotunplug, since device can be removed and re-probed with a new driver instance, where the guc_fini() is called too late. Move the fini over to devm to ensure this is called when device is removed. References: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1717Signed-off-by:
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Matthew Auld authored
Device can be hotunplugged before we start destroying gem objects. In such a case don't touch the GGTT entries, trigger any invalidations or mess around with rpm. This should already be taken care of when removing the device, we just need to take care of dealing with the software state, like removing the mm node. v2: (Andrzej) - Avoid some duplication by tracking the bound status and checking that instead. References: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1717Signed-off-by:Jagmeet Randhawa <jagmeet.randhawa@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240522102143.128069-21-matthew.auld@intel.com
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Matthew Auld authored
Hotunplugging the device seems to result in stuff like: kobject_add_internal failed for tile0 with -EEXIST, don't try to register things with the same name in the same directory. We only remove the sysfs as part of drmm, however that is tied to the lifetime of the driver instance and not the device underneath. Attempt to fix by using devm for all of the remaining sysfs stuff related to the device. Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1667 Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1432Signed-off-by:
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Matthew Auld authored
This is quite broken since we are nuking the pdev link to the private driver struct, but note here that driver_release is called when the drm_device is released (poor mans drmm), which can be long after the device has been removed. So here what we are actually doing is nuking the pdev link for what is potentially bound to a different drm_device. If that happens before our pci remove callback is triggered (for the new drm_device) we silently exit and skip some important cleanup steps, resulting in hilarity. There should be no reason to implement driver_release, when we already have nicer stuff like drmm, so just remove completely. The actual pdev link is already nuked when removing the device. Signed-off-by:
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Michal Wajdeczko authored
The GuC firmware is loaded and initialized by the PF driver. Make sure VF drivers only perform permitted operations. For submission initialization, use number of GuC context IDs from self config. Signed-off-by:
Piotr Piórkowski <piotr.piorkowski@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240521092518.624-3-michal.wajdeczko@intel.com
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Michal Wajdeczko authored
While PF and native drivers may initialize submission code to use all available GuC contexts IDs, the VF driver may only use limited number of IDs. Update init function to accept number of context IDs available for use. Signed-off-by:
Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240521092518.624-2-michal.wajdeczko@intel.com
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Michal Wajdeczko authored
We don't need <linux/delay.h> include since commit 5c09bd6c ("drm/xe/mmio: Move xe_mmio_wait32() to xe_mmio.c"). We don't need <linux/io-64-nonatomic-lo-hi.h> include since commit 54c65966 ("drm/xe: Make xe_mmio_read|write() functions non-inline"). And since commit 924e6a97 ("drm/xe/uapi: Remove MMIO ioctl") we don't need forward declarations of drm_device and drm_file. Signed-off-by:
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Michal Wajdeczko authored
These compilation units use udelay() or some GT oriented printk functions without explicitly including proper header files, and relying on #includes from the xe_mmio.h instead. Fix that. Signed-off-by:
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Michal Wajdeczko authored
This compilation unit uses udelay() function without including it's header file. Fix that to break dependency on other code. Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240520181814.2392-2-michal.wajdeczko@intel.com
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Michal Wajdeczko authored
Prefer forward declaration over #include xe_guc_pc_types.h Signed-off-by:
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Michal Wajdeczko authored
Prefer forward declaration over #include xe_huc_types.h Signed-off-by:
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Michal Wajdeczko authored
Prefer forward declaration over #include xe_gsc_types.h Signed-off-by:
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Michal Wajdeczko authored
Prefer forward declaration over #include xe_uc_types.h Signed-off-by:
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- 21 May, 2024 6 commits
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Nirmoy Das authored
Interruptible lock can return error and needed a return value check. This test should finish quick enough so use a uninterruptible lock instead. Cc: Matthew Auld <matthew.auld@intel.com> Reviewed-by:
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Nirmoy Das authored
At xe_pt_zap_ptes_entry() and xe_pt_stage_unbind_entry, the level cannot be 0. Therefore, add an independent check for the level. Since the level cannot be zero at this point, there is no need to check for `is_compact`, so remove that instead. Cc: Matthew Auld <matthew.auld@intel.com> Reviewed-by:
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Francois Dugast authored
The L3 bank mask is already generated and stored internally with the rest of the GT topology. In user space, the compute runtime now needs this information to be added to the device properties therefore the topology mask query is extended to provide a new mask which represents the L3 banks enabled on the GT. The changes in the compute runtime are ready and approved, see link below. v2: Rewrite commit message and add a link to the compute runtime PR (Francois Dugast) Cc: Matt Roper <matthew.d.roper@intel.com> Cc: Robert Krzemien <robert.krzemien@intel.com> Cc: Mateusz Jablonski <mateusz.jablonski@intel.com> Link: https://github.com/intel/compute-runtime/pull/722Signed-off-by:Mateusz Jablonski <mateusz.jablonski@intel.com> Reviewed-by:
Matt Roper <matthew.d.roper@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240416145037.7-2-francois.dugast@intel.com
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Lucas De Marchi authored
Print the accumulated runtime for client when printing fdinfo. Each time a query is done it first does 2 things: 1) loop through all the exec queues for the current client and accumulate the runtime, per engine class. CTX_TIMESTAMP is used for that, being read from the context image. 2) Read a "GPU timestamp" that can be used for considering "how much GPU time has passed" and that has the same unit/refclock as the one recording the runtime. RING_TIMESTAMP is used for that via MMIO. Since for all current platforms RING_TIMESTAMP follows the same refclock, just read it once, using any first engine available. This is exported to userspace as 2 numbers in fdinfo: drm-cycles-<class>: <RUNTIME> drm-total-cycles-<class>: <TIMESTAMP> Userspace is expected to collect at least 2 samples, which allows to know the client engine busyness as per: RUNTIME1 - RUNTIME0 busyness = --------------------- T1 - T0 Since drm-cycles-<class> always starts at 0, it's also possible to know if and engine was ever used by a client. It's expected that userspace will read any 2 samples every few seconds. Given the update frequency of the counters involved and that CTX_TIMESTAMP is 32-bits, the counter for each exec_queue can wrap around (assuming 100% utilization) after ~200s. The wraparound is not perceived by userspace since it's just accumulated for all the exec_queues in a 64-bit counter) but the measurement will not be accurate if the samples are too far apart. This could be mitigated by adding a workqueue to accumulate the counters every so often, but it's additional complexity for something that is done already by userspace every few seconds in tools like gputop (from igt), htop, nvtop, etc, with none of them really defaulting to 1 sample per minute or more. Reviewed-by:
Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com> Acked-by:
Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240517204310.88854-9-lucas.demarchi@intel.comSigned-off-by:
Lucas De Marchi <lucas.demarchi@intel.com>
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Lucas De Marchi authored
Get the first available engine from a gt, which helps in the case any engine serves as a context, like when reading RING_TIMESTAMP. Reviewed-by:
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Lucas De Marchi authored
gt->info.engine_mask used to indicate the available engines, but that is not always true anymore: some engines are reserved to kernel and some may be exposed as a single engine (e.g. with ccs_mode). Runtime changes only happen when no clients exist, so it's safe to cache the list of engines in the gt and update that when it's needed. This will help implementing per client engine utilization so this (mostly constant) information doesn't need to be re-calculated on every query. Reviewed-by:
Jonathan Cavitt <jonathan.cavitt@intel.com> Reviewed-by:
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