diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_engine_cs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_engine_cs.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c index 22c095035539..a5a494210b9e 100644 --- a/drivers/gpu/drm/i915/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/intel_engine_cs.c @@ -205,6 +205,15 @@ intel_engine_setup(struct drm_i915_private *dev_priv, GEM_BUG_ON(info->class >= ARRAY_SIZE(intel_engine_classes)); class_info = &intel_engine_classes[info->class]; + if (GEM_WARN_ON(info->class > MAX_ENGINE_CLASS)) + return -EINVAL; + + if (GEM_WARN_ON(info->instance > MAX_ENGINE_INSTANCE)) + return -EINVAL; + + if (GEM_WARN_ON(dev_priv->engine_class[info->class][info->instance])) + return -EINVAL; + GEM_BUG_ON(dev_priv->engine[id]); engine = kzalloc(sizeof(*engine), GFP_KERNEL); if (!engine) @@ -234,6 +243,7 @@ intel_engine_setup(struct drm_i915_private *dev_priv, ATOMIC_INIT_NOTIFIER_HEAD(&engine->context_status_notifier); + dev_priv->engine_class[info->class][info->instance] = engine; dev_priv->engine[id] = engine; return 0; } @@ -1816,6 +1826,29 @@ void intel_engine_dump(struct intel_engine_cs *engine, struct drm_printer *m) drm_printf(m, "\n"); } +static u8 user_class_map[] = { + [I915_ENGINE_CLASS_RENDER] = RENDER_CLASS, + [I915_ENGINE_CLASS_COPY] = COPY_ENGINE_CLASS, + [I915_ENGINE_CLASS_VIDEO] = VIDEO_DECODE_CLASS, + [I915_ENGINE_CLASS_VIDEO_ENHANCE] = VIDEO_ENHANCEMENT_CLASS, +}; + +struct intel_engine_cs * +intel_engine_lookup_user(struct drm_i915_private *i915, u8 class, u8 instance) +{ + if (class >= ARRAY_SIZE(user_class_map)) + return NULL; + + class = user_class_map[class]; + + GEM_BUG_ON(class > MAX_ENGINE_CLASS); + + if (instance > MAX_ENGINE_INSTANCE) + return NULL; + + return i915->engine_class[class][instance]; +} + #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) #include "selftests/mock_engine.c" #endif |