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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2019-04-12 08:14:16 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-04-17 07:25:42 +0100 |
| commit | d1172ab3d443e84ade75285f8c107bfac7e386d8 (patch) | |
| tree | 9e01d5ab883a39c72cd6525bbd8b1de6c03ce28f /include | |
| parent | drm/i915: fully convert the IRQ initialization macros to intel_uncore (diff) | |
| download | linux-dev-d1172ab3d443e84ade75285f8c107bfac7e386d8.tar.xz linux-dev-d1172ab3d443e84ade75285f8c107bfac7e386d8.zip | |
drm/i915: Introduce struct class_instance for engines across the uAPI
SSEU reprogramming of the context introduced the notion of engine class
and instance for a forwards compatible method of describing any engine
beyond the old execbuf interface. We wish to adopt this class:instance
description for more interfaces, so pull it out into a separate type for
userspace convenience.
Fixes: e46c2e99f600 ("drm/i915: Expose RPCS (SSEU) configuration to userspace (Gen11 only)")
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: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: Dmitry Rogozhkin <dmitry.v.rogozhkin@intel.com>
Cc: Tony Ye <tony.ye@intel.com>
Cc: Andi Shyti <andi@etezian.org>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Acked-by: Tony Ye <tony.ye@intel.com>
Reviewed-by: Andi Shyti <andi@etezian.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190412071416.30097-1-chris@chris-wilson.co.uk
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/drm/i915_drm.h | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index 52051d24d89d..3a73f5316766 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -126,6 +126,18 @@ enum drm_i915_gem_engine_class { I915_ENGINE_CLASS_INVALID = -1 }; +/* + * There may be more than one engine fulfilling any role within the system. + * Each engine of a class is given a unique instance number and therefore + * any engine can be specified by its class:instance tuplet. APIs that allow + * access to any engine in the system will use struct i915_engine_class_instance + * for this identification. + */ +struct i915_engine_class_instance { + __u16 engine_class; /* see enum drm_i915_gem_engine_class */ + __u16 engine_instance; +}; + /** * DOC: perf_events exposed by i915 through /sys/bus/event_sources/drivers/i915 * @@ -1525,8 +1537,7 @@ struct drm_i915_gem_context_param_sseu { /* * Engine class & instance to be configured or queried. */ - __u16 engine_class; - __u16 engine_instance; + struct i915_engine_class_instance engine; /* * Unused for now. Must be cleared to zero. |