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authorMatt Roper <matthew.d.roper@intel.com>2022-06-15 03:10:19 +0300
committerMatt Roper <matthew.d.roper@intel.com>2022-06-17 18:05:40 +0300
commit3fe6c7f53eaa62e3700d8ae076e9c42a1d855242 (patch)
tree140ed51e24900b4f3dd9bca3790b229ad6da67f4 /Documentation/gpu
parente7858254f9af9ad4f1570d781666e3af4c298a88 (diff)
downloadlinux-3fe6c7f53eaa62e3700d8ae076e9c42a1d855242.tar.xz
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.rst12
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
========================================