Commit 587e80dc authored by Rodrigo Vivi's avatar Rodrigo Vivi
Browse files

drm/i915: Add missing GSCCS documentation 



Introduce the basic documentation about GSC CS.

This "GPU Basics" section is focused on explaining the hardware
rather than the driver/uapi, so let's make sure GSC is also
properly documented here.

v2: Fixes from Matt: typos and acronym.

Fixes: 5fd974d1 ("drm/i915/mtl: add initial definitions for GSC CS")
Suggested-by: default avatarMatt Roper <matthew.d.roper@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: default avatarMatt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230926175554.25968-1-rodrigo.vivi@intel.com
parent d38d753d

Documentation/gpu/i915.rst

+4 −0
Original line number Diff line number Diff line
@@ -279,6 +279,10 @@ An Intel GPU has multiple engines. There are several engine types: 
  Also sometimes called 'VEBOX' in hardware documentation.

- Compute Command Streamer (CCS). An engine that has access to the media and

  GPGPU pipelines, but not the 3D pipeline.

- Graphics Security Controller (GSCCS). A dedicated engine for internal

  communication with GSC controller on security related tasks like

  High-bandwidth Digital Content Protection (HDCP), Protected Xe Path (PXP),

  and HuC firmware authentication.



The Intel GPU family is a family of integrated GPU's using Unified

Memory Access. For having the GPU "do work", user space will feed the