diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_query.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_query.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c index 782183b78f49..414d0a6d1f70 100644 --- a/drivers/gpu/drm/i915/i915_query.c +++ b/drivers/gpu/drm/i915/i915_query.c @@ -96,9 +96,58 @@ static int query_topology_info(struct drm_i915_private *dev_priv, return total_length; } +static int +query_engine_info(struct drm_i915_private *i915, + struct drm_i915_query_item *query_item) +{ + struct drm_i915_query_engine_info __user *query_ptr = + u64_to_user_ptr(query_item->data_ptr); + struct drm_i915_engine_info __user *info_ptr; + struct drm_i915_query_engine_info query; + struct drm_i915_engine_info info = { }; + struct intel_engine_cs *engine; + enum intel_engine_id id; + int len, ret; + + if (query_item->flags) + return -EINVAL; + + len = sizeof(struct drm_i915_query_engine_info) + + RUNTIME_INFO(i915)->num_engines * + sizeof(struct drm_i915_engine_info); + + ret = copy_query_item(&query, sizeof(query), len, query_item); + if (ret != 0) + return ret; + + if (query.num_engines || query.rsvd[0] || query.rsvd[1] || + query.rsvd[2]) + return -EINVAL; + + info_ptr = &query_ptr->engines[0]; + + for_each_engine(engine, i915, id) { + info.engine.engine_class = engine->uabi_class; + info.engine.engine_instance = engine->instance; + info.capabilities = engine->uabi_capabilities; + + if (__copy_to_user(info_ptr, &info, sizeof(info))) + return -EFAULT; + + query.num_engines++; + info_ptr++; + } + + if (__copy_to_user(query_ptr, &query, sizeof(query))) + return -EFAULT; + + return len; +} + static int (* const i915_query_funcs[])(struct drm_i915_private *dev_priv, struct drm_i915_query_item *query_item) = { query_topology_info, + query_engine_info, }; int i915_query_ioctl(struct drm_device *dev, void *data, struct drm_file *file) |