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| author |   Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> | 2019-10-14 11:36:00 -0700 |
|---|---|---|
| committer | Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> | 2019-10-17 09:30:32 -0700 |
| commit | 493065e24eb13cf1e974ef9fc0185d6266d16067 (patch) | |
| tree | 4f937043c4a80398b3896e2978fd9942022169ef /Documentation/gpu | |
| parent | drm/i915: Fix MST oops due to MSA changes (diff) | |
| download | wireguard-linux-493065e24eb13cf1e974ef9fc0185d6266d16067.tar.xz wireguard-linux-493065e24eb13cf1e974ef9fc0185d6266d16067.zip | |
drm/i915: Add microcontrollers documentation section
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
Diffstat (limited to 'Documentation/gpu')
| -rw-r--r-- | Documentation/gpu/i915.rst | 18 |
1 files changed, 18 insertions, 0 deletions
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 ======= |