tree 1e2bbf57131dcc88dd40bd1daf18fe8f2166f58e
parent 8899291db656dfbb53df8ad4e4e45da1c3b6d797
author Matthew Poremba <matthew.poremba@amd.com> 1667157169 -0700
committer Matthew Poremba <matthew.poremba@amd.com> 1667316848 +0000

dev-amdgpu: Fix SDMA trap ring ID, context

SDMA traps are used in the driver as a DMA fence. To pass a fence, the
SDMA sends the driver the interrupt context from a trap packet and the
ring ID which specifies which queue in the SDMA engine is passing a
fence. Currently the interrupt context is using the wrong value in the
packet and the ring ID is hard-coded to always be the gfx queue.

This changeset uses the correct interrupt context from the SDMA packet
and sets the ring ID to either 0 if the gfx queue is currently being
processed or 3 if the page queue is being processed.

The relevant interrupt service routine in the driver can be found at:
https://github.com/RadeonOpenCompute/ROCK-Kernel-Driver/blob/roc-4.3.x/
    drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c#L2129

Change-Id: Ie4a4a9d6ab1d3bf83bf76bb57a02a91100217b51
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/65093
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>