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drm/i915/xehp: Add compute engine ABI

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We're now ready to start exposing compute engines to userspace.

v2:
 - Move kerneldoc for other engine classes to a separate patch.  (Andi)

Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Szymon Morek <szymon.morek@intel.com>
UMD (mesa): https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14395
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Tested-by: Jordan Justen <jordan.l.justen@intel.com>  # mesa anvil & iris
Link: https://patchwork.freedesktop.org/patch/msgid/20220428041926.1483683-4-matthew.d.roper@intel.com
This commit is contained in:
Matt Roper 2022-04-27 21:19:25 -07:00
parent 97e17a0906
commit ecf8eca51f
4 changed files with 12 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/gpu/drm/i915/gt/intel_engine_user.c
View file

@ -47,7 +47,7 @@ static const u8 uabi_classes[] = {
[COPY_ENGINE_CLASS] = I915_ENGINE_CLASS_COPY,
[VIDEO_DECODE_CLASS] = I915_ENGINE_CLASS_VIDEO,
[VIDEO_ENHANCEMENT_CLASS] = I915_ENGINE_CLASS_VIDEO_ENHANCE,
/* TODO: Add COMPUTE_CLASS mapping once ABI is available */
[COMPUTE_CLASS] = I915_ENGINE_CLASS_COMPUTE,
};
static int engine_cmp(void *priv, const struct list_head *A,

1
drivers/gpu/drm/i915/i915_drm_client.c
View file

@ -81,6 +81,7 @@ static const char * const uabi_class_names[] = {
[I915_ENGINE_CLASS_COPY] = "copy",
[I915_ENGINE_CLASS_VIDEO] = "video",
[I915_ENGINE_CLASS_VIDEO_ENHANCE] = "video-enhance",
[I915_ENGINE_CLASS_COMPUTE] = "compute",
};
static u64 busy_add(struct i915_gem_context *ctx, unsigned int class)

2
drivers/gpu/drm/i915/i915_drm_client.h
View file

@ -13,7 +13,7 @@
#include "gt/intel_engine_types.h"
#define I915_LAST_UABI_ENGINE_CLASS I915_ENGINE_CLASS_VIDEO_ENHANCE
#define I915_LAST_UABI_ENGINE_CLASS I915_ENGINE_CLASS_COMPUTE
struct drm_i915_private;

9
include/uapi/drm/i915_drm.h
View file

@ -203,6 +203,15 @@ enum drm_i915_gem_engine_class {
*/
I915_ENGINE_CLASS_VIDEO_ENHANCE = 3,
/**
* @I915_ENGINE_CLASS_COMPUTE:
*
* Compute engines support a subset of the instructions available
* on render engines: compute engines support Compute (GPGPU) and
* programmable media workloads, but do not support the 3D pipeline.
*/
I915_ENGINE_CLASS_COMPUTE = 4,
/* Values in this enum should be kept compact. */
/**