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Code Issues Releases Wiki Activity

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: 5fd974d164 ("drm/i915/mtl: add initial definitions for GSC CS")
Suggested-by: Matt Roper <matthew.d.roper@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230926175554.25968-1-rodrigo.vivi@intel.com
This commit is contained in:
Rodrigo Vivi 2023-09-26 13:55:54 -04:00
parent d38d753da7
commit 587e80dc1c
1 changed files with 4 additions and 0 deletions
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Documentation/gpu/i915.rst
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@ -279,6 +279,10 @@ An Intel GPU has multiple engines. There are several engine types:
Also sometimes called 'VEBOX' in hardware documentation. Also sometimes called 'VEBOX' in hardware documentation.
- Compute Command Streamer (CCS). An engine that has access to the media and - Compute Command Streamer (CCS). An engine that has access to the media and
GPGPU pipelines, but not the 3D pipeline. 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 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 Memory Access. For having the GPU "do work", user space will feed the