1#!/usr/bin/env python3 2# 3# Copyright 2020 - The Android Open Source Project 4# 5# Licensed under the Apache License, Version 2.0 (the "License"); 6# you may not use this file except in compliance with the License. 7# You may obtain a copy of the License at 8# 9# http://www.apache.org/licenses/LICENSE-2.0 10# 11# Unless required by applicable law or agreed to in writing, software 12# distributed under the License is distributed on an "AS IS" BASIS, 13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14# See the License for the specific language governing permissions and 15# limitations under the License. 16 17from acts.controllers.fuchsia_lib.base_lib import BaseLib 18 19 20class FuchsiaRamLib(BaseLib): 21 def __init__(self, addr, tc, client_id): 22 self.address = addr 23 self.test_counter = tc 24 self.client_id = client_id 25 26 def measureBandwidth(self, cycles_to_measure, channels): 27 """ Measures the DDR bandwidth on the specified channels. 28 29 Args: 30 cycles_to_measure: How many bus cycles to perform the measurement over. 31 channels: An array of 8 uint64, specifying which ports to aggregate 32 for each channel. 33 34 Returns: 35 BandwidthInfo struct, prints an error message if error. 36 """ 37 test_cmd = "ram_facade.MeasureBandwidth" 38 test_args = { 39 "values": { 40 "cycles_to_measure": cycles_to_measure, 41 "channels": channels 42 } 43 } 44 test_id = self.build_id(self.test_counter) 45 self.test_counter += 1 46 47 return self.send_command(test_id, test_cmd, test_args) 48 49 def getDdrWindowingResults(self): 50 """ Retrieves the results from the DDR Windowing tool, which runs in 51 the bootloader. 52 53 Returns: 54 The register value, prints an error message if error. 55 """ 56 test_cmd = "ram_facade.GetDdrWindowingResults" 57 test_args = {} 58 test_id = self.build_id(self.test_counter) 59 self.test_counter += 1 60 61 return self.send_command(test_id, test_cmd, test_args) 62