[PATCH] drm/amdgpu/mes: zero the sdma_hqd_mask of 2nd SDMA engine for SDMA 6.0.1

[Yifan Zhang]

there is only one SDMA engine in SDMA 6.0.1, the sdma_hqd_mask has to be
zeroed for the 2nd engine, otherwise MES scheduler will consider 2nd
engine exists and map/unmap SDMA queues to the non-existent engine.

Signed-off-by: Yifan Zhang <yifan1.zhang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
index fe82b8b19a4e..f876fd62ab81 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
@@ -185,6 +185,14 @@ int amdgpu_mes_init(struct amdgpu_device *adev)
 			adev->mes.sdma_hqd_mask[i] = 0xfc;
 	}
 
+	/* there is only one SDMA engine in SDMA 6.0.1, the sdma_hqd_mask
+	 * has to be zeroed for the 2nd engine, otherwise MES scheduler will
+	 * consider 2nd engine exists and map/unmap SDMA queues to the non-existent
+	 * engine.
+	 */
+	if (adev->ip_versions[SDMA0_HWIP][0] == IP_VERSION(6, 0, 1))
+		adev->mes.sdma_hqd_mask[AMDGPU_MES_MAX_SDMA_PIPES - 1] = 0;
+
 	r = amdgpu_device_wb_get(adev, &adev->mes.sch_ctx_offs);
 	if (r) {
 		dev_err(adev->dev,
-- 
2.37.1