| # Copyright (C) 2020 Arm Limited or its affiliates. All rights reserved. |
| # |
| # SPDX-License-Identifier: Apache-2.0 |
| # |
| # Licensed under the Apache License, Version 2.0 (the License); you may |
| # not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an AS IS BASIS, WITHOUT |
| # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| # Description: |
| # Contains unit tests for npu_create_driver_payload API for an external consumer |
| import random |
| |
| import pytest |
| |
| from ethosu.vela.api import npu_create_driver_payload |
| from ethosu.vela.api import NpuAccelerator |
| |
| |
| @pytest.mark.parametrize("accelerator", list(NpuAccelerator)) |
| def test_create_driver_payload(accelerator: NpuAccelerator): |
| """Tests npu_create_driver_payload""" |
| # Generate a random command stream with defined beginning and end |
| random.seed(0) |
| num_commands = 793 |
| register_command_stream = random.choices(range(1 << 32), k=num_commands) |
| register_command_stream[0] = 0xFEDCBA98 |
| register_command_stream[-1] = 0xA0B1C2D3 |
| payload = npu_create_driver_payload(register_command_stream, accelerator) |
| header_size = 32 # expected driver header size in bytes |
| assert len(payload) == header_size + 4 * num_commands |
| # Check that the first register command is located directly after the header |
| assert list(payload[header_size : header_size + 4]) == [0x98, 0xBA, 0xDC, 0xFE] |
| # Check that the last register command is present in the payload |
| assert list(payload[-4:]) == [0xD3, 0xC2, 0xB1, 0xA0] |