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| author | Matt Roper <matthew.d.roper@intel.com> | 2022-06-14 17:10:19 -0700 |
|---|---|---|
| committer | Matt Roper <matthew.d.roper@intel.com> | 2022-06-17 08:05:40 -0700 |
| commit | 3fe6c7f53eaa62e3700d8ae076e9c42a1d855242 (patch) | |
| tree | 140ed51e24900b4f3dd9bca3790b229ad6da67f4 /Documentation/gpu | |
| parent | e7858254f9af9ad4f1570d781666e3af4c298a88 (diff) | |
| download | linux-3fe6c7f53eaa62e3700d8ae076e9c42a1d855242.tar.gz | |
drm/i915/gt: Cleanup interface for MCR operations
Let's replace the assortment of intel_gt_* and intel_uncore_* functions
that operate on MCR registers with a cleaner set of interfaces:
* intel_gt_mcr_read -- unicast read from specific instance
* intel_gt_mcr_read_any[_fw] -- unicast read from any non-terminated
instance
* intel_gt_mcr_unicast_write -- unicast write to specific instance
* intel_gt_mcr_multicast_write[_fw] -- multicast write to all instances
We'll also replace the historic "slice" and "subslice" terminology with
"group" and "instance" to match the documentation for more recent
platforms; these days MCR steering applies to more types of replication
than just slice/subslice.
v2:
- Reference the new kerneldoc from i915.rst. (Jani)
- Tweak the wording of the documentation for a couple functions to
clarify the difference between "_fw" and non-"_fw" forms.
v3:
- s/read/write/ to fix copy-paste mistake in a couple comments.
(Harish)
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Jani Nikula <jani.nikula@linux.intel.com>
Reviewed-by: Harish Chegondi <harish.chegondi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220615001019.1821989-3-matthew.d.roper@intel.com
Diffstat (limited to 'Documentation/gpu')
| -rw-r--r-- | Documentation/gpu/i915.rst | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/gpu/i915.rst b/Documentation/gpu/i915.rst index 54060cd6c419..4e59db1cfb00 100644 --- a/Documentation/gpu/i915.rst +++ b/Documentation/gpu/i915.rst @@ -246,6 +246,18 @@ Display State Buffer .. kernel-doc:: drivers/gpu/drm/i915/display/intel_dsb.c :internal: +GT Programming +============== + +Multicast/Replicated (MCR) Registers +------------------------------------ + +.. kernel-doc:: drivers/gpu/drm/i915/gt/intel_gt_mcr.c + :doc: GT Multicast/Replicated (MCR) Register Support + +.. kernel-doc:: drivers/gpu/drm/i915/gt/intel_gt_mcr.c + :internal: + Memory Management and Command Submission ======================================== |