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OpenCloudOS-Kernel/drivers/gpu/drm/i915/gt/sysfs_engines.h

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drm/i915/gt: Expose engine properties via sysfs Preliminary stub to add engines underneath /sys/class/drm/cardN/, so that we can expose properties on each engine to the sysadmin. To start with we have basic analogues of the i915_query ioctl so that we can pretty print engine discovery from the shell, and flesh out the directory structure. Later we will add writeable sysadmin properties such as per-engine timeout controls. An example tree of the engine properties on Braswell: /sys/class/drm/card0 └── engine    ├── bcs0    │   ├── capabilities    │   ├── class    │   ├── instance    │   ├── known_capabilities    │   └── name    ├── rcs0    │   ├── capabilities    │   ├── class    │   ├── instance    │   ├── known_capabilities    │   └── name    ├── vcs0    │   ├── capabilities    │   ├── class    │   ├── instance    │   ├── known_capabilities    │   └── name    └── vecs0       ├── capabilities    ├── class    ├── instance       ├── known_capabilities    └── name v2: Include stringified capabilities v3: Include all known capabilities for futureproofing. v4: Combine the two caps loops into one v5: Hide underneath Kconfig.unstable for wider discussion Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Tested-by: Steve Carbonari <steven.carbonari@intel.com> Reviewed-by: Steve Carbonari <steven.carbonari@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200228131716.3243616-1-chris@chris-wilson.co.uk
2020-02-28 21:17:10 +08:00
/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2019 Intel Corporation
*/
#ifndef INTEL_ENGINE_SYSFS_H
#define INTEL_ENGINE_SYSFS_H
struct drm_i915_private;
void intel_engines_add_sysfs(struct drm_i915_private *i915);
#endif /* INTEL_ENGINE_SYSFS_H */