drm/i915/xehp: Add compute engine ABI

We're now ready to start exposing compute engines to userspace. v2: - Move kerneldoc for other engine classes to a separate patch. (Andi)

Matt Roper committed 4 years ago

Commit ecf8eca1 parent 97e17a04 files · +12 −2Browse files

Unified · Split

4 files

@@ -47,7 +47,7 @@ static const u8 uabi_classes[] = { · 46 unmodified lines
47	47	[COPY_ENGINE_CLASS] = I915_ENGINE_CLASS_COPY,
48	48	[VIDEO_DECODE_CLASS] = I915_ENGINE_CLASS_VIDEO,
49	49	[VIDEO_ENHANCEMENT_CLASS] = I915_ENGINE_CLASS_VIDEO_ENHANCE,
50		− /* TODO: Add COMPUTE_CLASS mapping once ABI is available */
	50	+ [COMPUTE_CLASS] = I915_ENGINE_CLASS_COMPUTE,
51	51	};
52	52
53	53	static int engine_cmp(void priv, const struct list_head A,

@@ -81,6 +81,7 @@ static const char * const uabi_class_names[] = { · 80 unmodified lines
81	81	[I915_ENGINE_CLASS_COPY] = "copy",
82	82	[I915_ENGINE_CLASS_VIDEO] = "video",
83	83	[I915_ENGINE_CLASS_VIDEO_ENHANCE] = "video-enhance",
	84	+ [I915_ENGINE_CLASS_COMPUTE] = "compute",
84	85	};
85	86
86	87	static u64 busy_add(struct i915_gem_context *ctx, unsigned int class)

@@ -13,7 +13,7 @@ · 12 unmodified lines
13	13
14	14	#include "gt/intel_engine_types.h"
15	15
16		−#define I915_LAST_UABI_ENGINE_CLASS I915_ENGINE_CLASS_VIDEO_ENHANCE
	16	+#define I915_LAST_UABI_ENGINE_CLASS I915_ENGINE_CLASS_COMPUTE
17	17
18	18	struct drm_i915_private;
19	19

@@ -203,6 +203,15 @@ enum drm_i915_gem_engine_class { · 202 unmodified lines
203	203	*/
204	204	I915_ENGINE_CLASS_VIDEO_ENHANCE = 3,
205	205
	206	+ /**
	207	+ * @I915_ENGINE_CLASS_COMPUTE:
	208	+ *
	209	+ * Compute engines support a subset of the instructions available
	210	+ * on render engines: compute engines support Compute (GPGPU) and
	211	+ * programmable media workloads, but do not support the 3D pipeline.
	212	+ */
	213	+ I915_ENGINE_CLASS_COMPUTE = 4,
	214	+
206	215	/* Values in this enum should be kept compact. */
207	216
208	217	/**