6.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jack Xiao <Jack.Xiao@xxxxxxx>
commit 11752c013f562a1124088a35bd314aa0e9f0e88f upstream.
wait memory room until enough before writing mes packets
to avoid ring buffer overflow.
v2: squash in sched_hw_submission fix
Fixes: de3246254156 ("drm/amdgpu: cleanup MES11 command submission")
Fixes: fffe347e1478 ("drm/amdgpu: cleanup MES12 command submission")
Signed-off-by: Jack Xiao <Jack.Xiao@xxxxxxx>
Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
(cherry picked from commit 34e087e8920e635c62e2ed6a758b0cd27f836d13)
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 2 ++
drivers/gpu/drm/amd/amdgpu/mes_v11_0.c | 18 ++++++++++++++----
2 files changed, 16 insertions(+), 4 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -212,6 +212,8 @@ int amdgpu_ring_init(struct amdgpu_devic
*/
if (ring->funcs->type == AMDGPU_RING_TYPE_KIQ)
sched_hw_submission = max(sched_hw_submission, 256);
+ if (ring->funcs->type == AMDGPU_RING_TYPE_MES)
+ sched_hw_submission = 8;
else if (ring == &adev->sdma.instance[0].page)
sched_hw_submission = 256;
--- a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c
@@ -163,7 +163,7 @@ static int mes_v11_0_submit_pkt_and_poll
const char *op_str, *misc_op_str;
unsigned long flags;
u64 status_gpu_addr;
- u32 status_offset;
+ u32 seq, status_offset;
u64 *status_ptr;
signed long r;
int ret;
@@ -191,6 +191,13 @@ static int mes_v11_0_submit_pkt_and_poll
if (r)
goto error_unlock_free;
+ seq = ++ring->fence_drv.sync_seq;
+ r = amdgpu_fence_wait_polling(ring,
+ seq - ring->fence_drv.num_fences_mask,
+ timeout);
+ if (r < 1)
+ goto error_undo;
+
api_status = (struct MES_API_STATUS *)((char *)pkt + api_status_off);
api_status->api_completion_fence_addr = status_gpu_addr;
api_status->api_completion_fence_value = 1;
@@ -203,8 +210,7 @@ static int mes_v11_0_submit_pkt_and_poll
mes_status_pkt.header.dwsize = API_FRAME_SIZE_IN_DWORDS;
mes_status_pkt.api_status.api_completion_fence_addr =
ring->fence_drv.gpu_addr;
- mes_status_pkt.api_status.api_completion_fence_value =
- ++ring->fence_drv.sync_seq;
+ mes_status_pkt.api_status.api_completion_fence_value = seq;
amdgpu_ring_write_multiple(ring, &mes_status_pkt,
sizeof(mes_status_pkt) / 4);
@@ -224,7 +230,7 @@ static int mes_v11_0_submit_pkt_and_poll
dev_dbg(adev->dev, "MES msg=%d was emitted\n",
x_pkt->header.opcode);
- r = amdgpu_fence_wait_polling(ring, ring->fence_drv.sync_seq, timeout);
+ r = amdgpu_fence_wait_polling(ring, seq, timeout);
if (r < 1 || !*status_ptr) {
if (misc_op_str)
@@ -247,6 +253,10 @@ static int mes_v11_0_submit_pkt_and_poll
amdgpu_device_wb_free(adev, status_offset);
return 0;
+error_undo:
+ dev_err(adev->dev, "MES ring buffer is full.\n");
+ amdgpu_ring_undo(ring);
+
error_unlock_free:
spin_unlock_irqrestore(&mes->ring_lock, flags);
