iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/i915: Add microcontrollers documentation section

Browse Source 
To better organize the information, add a microcontrollers section and
move/link the GuC, HuC and DMC documentation under it. Also add a small
intro.

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Acked-by: Anna Karas <anna.karas@intel.com>
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191014183602.3643-1-daniele.ceraolospurio@intel.com
This commit is contained in:
Daniele Ceraolo Spurio 2019-10-14 11:36:00 -07:00
parent d4a415dcda
commit 493065e24e
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
Documentation/gpu/i915.rst
View File

@ -415,6 +415,15 @@ Object Tiling IOCTLs
.. kernel-doc:: drivers/gpu/drm/i915/gem/i915_gem_tiling.c .. kernel-doc:: drivers/gpu/drm/i915/gem/i915_gem_tiling.c
:doc: buffer object tiling :doc: buffer object tiling
Microcontrollers
================
Starting from gen9, three microcontrollers are available on the HW: the
graphics microcontroller (GuC), the HEVC/H.265 microcontroller (HuC) and the
display microcontroller (DMC). The driver is responsible for loading the
firmwares on the microcontrollers; the GuC and HuC firmwares are transferred
to WOPCM using the DMA engine, while the DMC firmware is written through MMIO.
WOPCM WOPCM
----- -----
@ -454,6 +463,15 @@ GuC Address Space
.. kernel-doc:: drivers/gpu/drm/i915/gt/uc/intel_guc.c .. kernel-doc:: drivers/gpu/drm/i915/gt/uc/intel_guc.c
:doc: GuC Address Space :doc: GuC Address Space
HuC
---
.. kernel-doc:: drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
:doc: HuC Firmware
DMC
---
See `CSR firmware support for DMC`_
Tracing Tracing
======= =======