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Rev 6936 Rev 7143
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 * than as the per-file handle.
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 * than as the per-file handle.
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 */
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 */
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#define I915_EXEC_HANDLE_LUT		(1<<12)
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#define I915_EXEC_HANDLE_LUT		(1<<12)
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/** Used for switching BSD rings on the platforms with two BSD rings */
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/** Used for switching BSD rings on the platforms with two BSD rings */
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#define I915_EXEC_BSD_SHIFT	 (13)
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#define I915_EXEC_BSD_MASK	 (3 << I915_EXEC_BSD_SHIFT)
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#define I915_EXEC_BSD_MASK		(3<<13)
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/* default ping-pong mode */
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#define I915_EXEC_BSD_DEFAULT		(0<<13) /* default ping-pong mode */
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#define I915_EXEC_BSD_DEFAULT	 (0 << I915_EXEC_BSD_SHIFT)
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#define I915_EXEC_BSD_RING1		(1<<13)
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#define I915_EXEC_BSD_RING1	 (1 << I915_EXEC_BSD_SHIFT)
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#define I915_EXEC_BSD_RING2		(2<<13)
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#define I915_EXEC_BSD_RING2	 (2 << I915_EXEC_BSD_SHIFT)
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/** Tell the kernel that the batchbuffer is processed by
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/** Tell the kernel that the batchbuffer is processed by
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 *  the resource streamer.
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 *  the resource streamer.
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struct drm_i915_gem_busy {
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struct drm_i915_gem_busy {
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	/** Handle of the buffer to check for busy */
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	/** Handle of the buffer to check for busy */
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	__u32 handle;
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	__u32 handle;
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	/** Return busy status
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	 *
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	 * A return of 0 implies that the object is idle (after
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	 * having flushed any pending activity), and a non-zero return that
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	 * the object is still in-flight on the GPU. (The GPU has not yet
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	 * signaled completion for all pending requests that reference the
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	 * object.)
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	 *
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	 * The returned dword is split into two fields to indicate both
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	 * the engines on which the object is being read, and the
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	 * engine on which it is currently being written (if any).
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	 *
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	 * The low word (bits 0:15) indicate if the object is being written
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	 * to by any engine (there can only be one, as the GEM implicit
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	 * synchronisation rules force writes to be serialised). Only the
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	 * engine for the last write is reported.
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	 *
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	/** Return busy status (1 if busy, 0 if idle).
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	 * The high word (bits 16:31) are a bitmask of which engines are
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	 * currently reading from the object. Multiple engines may be
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	 * The high word is used to indicate on which rings the object
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	 * reading from the object simultaneously.
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	 *
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	 * The value of each engine is the same as specified in the
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	 * EXECBUFFER2 ioctl, i.e. I915_EXEC_RENDER, I915_EXEC_BSD etc.
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	 * Note I915_EXEC_DEFAULT is a symbolic value and is mapped to
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	 * the I915_EXEC_RENDER engine for execution, and so it is never
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	 * reported as active itself. Some hardware may have parallel
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	 * execution engines, e.g. multiple media engines, which are
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	 * currently resides:
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	 * mapped to the same identifier in the EXECBUFFER2 ioctl and
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	 *  16:31 - busy (r or r/w) rings (16 render, 17 bsd, 18 blt, etc)
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	 * so are not separately reported for busyness.
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	 */
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	 */
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	__u32 busy;
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	__u32 busy;