On 28/09/2019 00:42, Daniele Ceraolo Spurio wrote: > 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@xxxxxxxxx> Reviewed-by: Martin Peres <martin.peres@xxxxxxxxxxxxxxx> > Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx> > --- > Documentation/gpu/i915.rst | 18 ++++++++++++++++++ > 1 file changed, 18 insertions(+) > > diff --git a/Documentation/gpu/i915.rst b/Documentation/gpu/i915.rst > index 465779670fd4..f1bae7867045 100644 > --- a/Documentation/gpu/i915.rst > +++ b/Documentation/gpu/i915.rst > @@ -415,6 +415,15 @@ Object Tiling IOCTLs > .. kernel-doc:: drivers/gpu/drm/i915/gem/i915_gem_tiling.c > :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 > ----- > > @@ -454,6 +463,15 @@ GuC Address Space > .. kernel-doc:: drivers/gpu/drm/i915/gt/uc/intel_guc.c > :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 > ======= > > _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
