drm/amdgpu: Add UALink remote state structures and API declarations

Browse source

Extend the UALink manager with data structures for cross-GPU interrupt
and TLB shootdown: per-ring state, per-peer channel pairs, and the
top-level remote container.

Declare the public init, teardown, and reset APIs.

Define ring buffer capacity, firmware command and status codes, SMN
mailbox register addresses, and the metadata and writeback buffer layouts
shared between driver and MPNHT firmware.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Philip Yang 2026-03-25 13:37:08 -04:00 • committed by Alex Deucher

parent 2b92b27043

commit ab4683c95e

2 changed files with 152 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

140

drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.c

View file

12

drivers/gpu/drm/amd/amdgpu/amdgpu_ualink.h

View file