This is a note to let you know that I've just added the patch titled
drm/amdgpu: fix GRBM read timeout when do mes_self_test
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amdgpu-fix-grbm-read-timeout-when-do-mes_self_test.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 36e7ff5c13cb15cb7b06c76d42bb76cbf6b7ea75 Mon Sep 17 00:00:00 2001
From: Tim Huang <Tim.Huang@xxxxxxx>
Date: Wed, 1 Nov 2023 14:22:04 +0800
Subject: drm/amdgpu: fix GRBM read timeout when do mes_self_test
From: Tim Huang <Tim.Huang@xxxxxxx>
commit 36e7ff5c13cb15cb7b06c76d42bb76cbf6b7ea75 upstream.
Use a proper MEID to make sure the CP_HQD_* and CP_GFX_HQD_* registers
can be touched when initialize the compute and gfx mqd in mes_self_test.
Otherwise, we expect no response from CP and an GRBM eventual timeout.
Signed-off-by: Tim Huang <Tim.Huang@xxxxxxx>
Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
Reviewed-by: Yifan Zhang <yifan1.zhang@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
@@ -556,8 +556,20 @@ static void amdgpu_mes_queue_init_mqd(st
mqd_prop.hqd_queue_priority = p->hqd_queue_priority;
mqd_prop.hqd_active = false;
+ if (p->queue_type == AMDGPU_RING_TYPE_GFX ||
+ p->queue_type == AMDGPU_RING_TYPE_COMPUTE) {
+ mutex_lock(&adev->srbm_mutex);
+ amdgpu_gfx_select_me_pipe_q(adev, p->ring->me, p->ring->pipe, 0, 0, 0);
+ }
+
mqd_mgr->init_mqd(adev, q->mqd_cpu_ptr, &mqd_prop);
+ if (p->queue_type == AMDGPU_RING_TYPE_GFX ||
+ p->queue_type == AMDGPU_RING_TYPE_COMPUTE) {
+ amdgpu_gfx_select_me_pipe_q(adev, 0, 0, 0, 0, 0);
+ mutex_unlock(&adev->srbm_mutex);
+ }
+
amdgpu_bo_unreserve(q->mqd_obj);
}
@@ -993,9 +1005,13 @@ int amdgpu_mes_add_ring(struct amdgpu_de
switch (queue_type) {
case AMDGPU_RING_TYPE_GFX:
ring->funcs = adev->gfx.gfx_ring[0].funcs;
+ ring->me = adev->gfx.gfx_ring[0].me;
+ ring->pipe = adev->gfx.gfx_ring[0].pipe;
break;
case AMDGPU_RING_TYPE_COMPUTE:
ring->funcs = adev->gfx.compute_ring[0].funcs;
+ ring->me = adev->gfx.compute_ring[0].me;
+ ring->pipe = adev->gfx.compute_ring[0].pipe;
break;
case AMDGPU_RING_TYPE_SDMA:
ring->funcs = adev->sdma.instance[0].ring.funcs;
Patches currently in stable-queue which might be from Tim.Huang@xxxxxxx are
queue-6.6/drm-amdgpu-fix-grbm-read-timeout-when-do-mes_self_test.patch
