drm/i915: add I915_PARAM_HAS_BSD2 to i915_getparam

This will let userland only try to use the new ring
when the appropriate kernel is present

v2: change the number to be consistent with upstream (Zhipeng)
Signed-off-by: Zhipeng Gong <zhipeng.gong@intel.com>
Reviewed--by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_dma.c

@@ -92,6 +92,9 @@ static int i915_getparam(struct drm_device *dev, void *data,
 	case I915_PARAM_HAS_VEBOX:
 		value = intel_ring_initialized(&dev_priv->ring[VECS]);
 		break;
+	case I915_PARAM_HAS_BSD2:
+		value = intel_ring_initialized(&dev_priv->ring[VCS2]);
+		break;
 	case I915_PARAM_HAS_RELAXED_FENCING:
 		value = 1;
 		break;

include/uapi/drm/i915_drm.h

@@ -346,6 +346,7 @@ typedef struct drm_i915_irq_wait {
 #define I915_PARAM_CMD_PARSER_VERSION	 28
 #define I915_PARAM_HAS_COHERENT_PHYS_GTT 29
 #define I915_PARAM_MMAP_VERSION          30
+#define I915_PARAM_HAS_BSD2		 31
 
 typedef struct drm_i915_getparam {
 	int param;