drm/amdgpu/sdma5.2: add mes support for sdma ring test

Add MES support for sdma ring test.
Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c

@@ -965,18 +965,29 @@ static int sdma_v5_2_ring_test_ring(struct amdgpu_ring *ring)
 	int r;
 	u32 tmp;
 	u64 gpu_addr;
+	volatile uint32_t *cpu_ptr = NULL;
 
-	r = amdgpu_device_wb_get(adev, &index);
-	if (r) {
-		dev_err(adev->dev, "(%d) failed to allocate wb slot\n", r);
-		return r;
-	}
-
-	gpu_addr = adev->wb.gpu_addr + (index * 4);
 	tmp = 0xCAFEDEAD;
-	adev->wb.wb[index] = cpu_to_le32(tmp);
 
-	r = amdgpu_ring_alloc(ring, 5);
+	if (ring->is_mes_queue) {
+		uint32_t offset = 0;
+		offset = amdgpu_mes_ctx_get_offs(ring,
+					 AMDGPU_MES_CTX_PADDING_OFFS);
+		gpu_addr = amdgpu_mes_ctx_get_offs_gpu_addr(ring, offset);
+		cpu_ptr = amdgpu_mes_ctx_get_offs_cpu_addr(ring, offset);
+		*cpu_ptr = tmp;
+	} else {
+		r = amdgpu_device_wb_get(adev, &index);
+		if (r) {
+			dev_err(adev->dev, "(%d) failed to allocate wb slot\n", r);
+			return r;
+		}
+
+		gpu_addr = adev->wb.gpu_addr + (index * 4);
+		adev->wb.wb[index] = cpu_to_le32(tmp);
+	}
+
+	r = amdgpu_ring_alloc(ring, 20);
 	if (r) {
 		DRM_ERROR("amdgpu: dma failed to lock ring %d (%d).\n", ring->idx, r);
 		amdgpu_device_wb_free(adev, index);
@@ -992,7 +1003,10 @@ static int sdma_v5_2_ring_test_ring(struct amdgpu_ring *ring)
 	amdgpu_ring_commit(ring);
 
 	for (i = 0; i < adev->usec_timeout; i++) {
-		tmp = le32_to_cpu(adev->wb.wb[index]);
+		if (ring->is_mes_queue)
+			tmp = le32_to_cpu(*cpu_ptr);
+		else
+			tmp = le32_to_cpu(adev->wb.wb[index]);
 		if (tmp == 0xDEADBEEF)
 			break;
 		if (amdgpu_emu_mode == 1)
@@ -1004,7 +1018,8 @@ static int sdma_v5_2_ring_test_ring(struct amdgpu_ring *ring)
 	if (i >= adev->usec_timeout)
 		r = -ETIMEDOUT;
 
-	amdgpu_device_wb_free(adev, index);
+	if (!ring->is_mes_queue)
+		amdgpu_device_wb_free(adev, index);
 
 	return r;
 }