112  * Different engines serve different roles, and there may be more than one
115  * operations to be performed on a certain subset of engines, or for providing
575  * value reports the support of context isolation for individual engines by
1009  * clients or engines (i.e. suballocating objects), the implicit tracking
1281 	 * conditions which prevent the report of which engines are busy from
1283 	 * object is idle, the result of the ioctl, that all engines are idle,
1296 	 * The high word (bits 16:31) are a bitmask of which engines classes
1297 	 * are currently reading from the object. Multiple engines may be
1304 	 * execution engines, e.g. multiple media engines, which are
1310 	 * the object is idle or busy. The report of which engines are busy
1334  * Special GPU caching mode which is coherent with the scanout engines.
1640  * Bind this context to operate on this subset of available engines. Henceforth,
1642  * an index into this array of engines; I915_EXEC_DEFAULT selecting engine[0]
1650  * Setting the number of engines bound to the context to 0, by passing a zero
1689  * Only applies to the current set of engine and lost when those engines
1712  * Not all GPUs or engines support this functionality in which case an error
1763  * Enable load balancing across this set of engines.
1766  * used will proxy the execbuffer request onto one of the set of engines
1769  * The set of engines must be compatible (e.g. the same HW class) as they
1773  * the backing engines (bypassing the load balancing proxy), the context must
1774  * be defined to use a single timeline for all engines.
1785 	struct i915_engine_class_instance engines[0];  member
1794 	struct i915_engine_class_instance engines[N__]; \
1802  * All engines are equal, but some are more equal than others. Given
1804  * a request on a given subset of engines in parallel to a request on a
1805  * specific engine. We enable this selection of engines within a virtual
1817 	__u16 virtual_index; /* index of virtual engine in ctx->engines[] */
1823 	struct i915_engine_class_instance engines[0];  member
1833 	struct i915_engine_class_instance engines[N__]; \
1840 	struct i915_engine_class_instance engines[0];  member
1845 	struct i915_engine_class_instance engines[N__]; \
2314  * Engine info query enumerates all engines known to the driver by filling in
2325 	struct drm_i915_engine_info engines[];  member