drm/amdgpu: use the whole doorbell space for mes

Use the whole doorbell space for mes. Each queue in one process occupies
one doorbell slot to ring the queue submitting.
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/amdgpu_device.c

@@ -1044,7 +1044,12 @@ static int amdgpu_device_doorbell_init(struct amdgpu_device *adev)
 	adev->doorbell.base = pci_resource_start(adev->pdev, 2);
 	adev->doorbell.size = pci_resource_len(adev->pdev, 2);
 
-	adev->doorbell.num_doorbells = min_t(u32, adev->doorbell.size / sizeof(u32),
+	if (adev->enable_mes) {
+		adev->doorbell.num_doorbells =
+			adev->doorbell.size / sizeof(u32);
+	} else {
+		adev->doorbell.num_doorbells =
+			min_t(u32, adev->doorbell.size / sizeof(u32),
 			      adev->doorbell_index.max_assignment+1);
 		if (adev->doorbell.num_doorbells == 0)
 			return -EINVAL;
@@ -1057,6 +1062,7 @@ static int amdgpu_device_doorbell_init(struct amdgpu_device *adev)
 		 */
 		if (adev->asic_type >= CHIP_VEGA10)
 			adev->doorbell.num_doorbells += 0x400;
+	}
 
 	adev->doorbell.ptr = ioremap(adev->doorbell.base,
 				     adev->doorbell.num_doorbells *