1 | /* $Id: tstDevPhy.cpp 103410 2024-02-19 07:11:27Z vboxsync $ */
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2 | /** @file
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3 | * PHY MDIO unit tests.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2007-2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * SPDX-License-Identifier: GPL-3.0-only
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26 | */
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27 |
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28 |
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29 | /*********************************************************************************************************************************
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30 | * Header Files *
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31 | *********************************************************************************************************************************/
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32 | #ifdef USE_CPPUNIT
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33 | # include <cppunit/ui/text/TestRunner.h>
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34 | # include <cppunit/extensions/HelperMacros.h>
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35 | #else
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36 | # include "CppUnitEmulation.h"
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37 | #endif
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38 |
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39 | #include "../DevE1000Phy.h"
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40 |
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41 |
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42 | /**
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43 | * Test fixture for PHY MDIO/MDC interface emulation.
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44 | */
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45 | class PhyTest
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46 | #ifdef USE_CPPUNIT
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47 | : public CppUnit::TestFixture
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48 | #endif
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49 | {
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50 | CPPUNIT_TEST_SUITE( tstDevPhy );
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51 |
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52 | CPPUNIT_TEST(testSize);
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53 | CPPUNIT_TEST(testReadPID);
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54 | CPPUNIT_TEST(testReadEPID);
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55 | CPPUNIT_TEST(testWriteANA);
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56 |
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57 | CPPUNIT_TEST_SUITE_END();
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58 |
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59 | private:
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60 | enum Op
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61 | {
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62 | WRITE_OP = 0x1,
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63 | READ_OP = 0x2
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64 | };
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65 |
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66 | #define PHYADR_VAL (uint16_t)0
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67 | #define ST_VAL (uint16_t)1
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68 | #define TA_VAL (uint16_t)2
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69 | #define PREAMBLE_VAL 0xFFFFFFFF
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70 |
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71 | enum BitWidths {
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72 | ST_BITS = 2,
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73 | OP_BITS = 2,
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74 | PHYADR_BITS = 5,
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75 | REGADR_BITS = 5,
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76 | TA_BITS = 2,
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77 | DATA_BITS = 16,
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78 | PREAMBLE_BITS = 32
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79 | };
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80 |
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81 | PPHY phy;
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82 |
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83 | // Helper methods
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84 | void shiftOutBits(uint32_t data, uint16_t count);
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85 | uint16_t shiftInBits(uint16_t count);
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86 | int readAt(uint16_t addr);
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87 | void writeTo(uint16_t addr, uint32_t value);
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88 |
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89 | public:
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90 | void setUp()
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91 | {
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92 | phy = new PHY;
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93 | Phy::init(phy, 0, PHY_EPID_M881000);
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94 | }
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95 |
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96 | void tearDown()
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97 | {
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98 | delete phy;
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99 | phy = NULL;
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100 | }
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101 |
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102 | void testSize()
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103 | {
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104 | CPPUNIT_ASSERT_EQUAL(32, ST_BITS+OP_BITS+PHYADR_BITS+REGADR_BITS+TA_BITS+DATA_BITS);
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105 | }
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106 |
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107 | void testReadPID()
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108 | {
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109 | CPPUNIT_ASSERT_EQUAL(0x0141, readAt(2));
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110 | }
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111 |
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112 | void testReadEPID()
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113 | {
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114 | CPPUNIT_ASSERT_EQUAL(0x0141, readAt(2));
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115 | CPPUNIT_ASSERT_EQUAL(PHY_EPID_M881000, readAt(3));
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116 | }
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117 |
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118 | void testWriteANA()
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119 | {
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120 | writeTo(4, 0xBEEF);
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121 | CPPUNIT_ASSERT_EQUAL(0xBEEF, readAt(4));
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122 | }
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123 |
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124 | };
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125 |
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126 | /**
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127 | * shiftOutBits - Shift data bits our to MDIO
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128 | **/
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129 | void PhyTest::shiftOutBits(uint32_t data, uint16_t count) {
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130 | uint32_t mask = 0x01 << (count - 1);
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131 |
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132 | do {
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133 | Phy::writeMDIO(phy, data & mask, NULL /*pDevIns*/);
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134 | mask >>= 1;
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135 | } while (mask);
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136 | }
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137 |
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138 | /**
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139 | * shiftInBits - Shift data bits in from MDIO
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140 | **/
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141 | uint16_t PhyTest::shiftInBits(uint16_t count)
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142 | {
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143 | uint16_t data = 0;
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144 |
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145 | while (count--)
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146 | {
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147 | data <<= 1;
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148 | data |= Phy::readMDIO(phy) ? 1 : 0;
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149 | }
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150 |
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151 | return data;
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152 | }
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153 |
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154 | int PhyTest::readAt(uint16_t addr)
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155 | {
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156 | shiftOutBits(PREAMBLE_VAL, PREAMBLE_BITS);
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157 |
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158 | shiftOutBits(ST_VAL, ST_BITS);
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159 | shiftOutBits(READ_OP, OP_BITS);
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160 | shiftOutBits(PHYADR_VAL, PHYADR_BITS);
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161 | shiftOutBits(addr, REGADR_BITS);
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162 |
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163 | CPPUNIT_ASSERT_EQUAL((uint16_t)0, shiftInBits(1));
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164 | uint16_t u16Data = shiftInBits(DATA_BITS);
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165 | shiftInBits(1);
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166 | return u16Data;
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167 | }
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168 |
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169 | void PhyTest::writeTo(uint16_t addr, uint32_t value)
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170 | {
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171 | shiftOutBits(PREAMBLE_VAL, PREAMBLE_BITS);
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172 |
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173 | shiftOutBits(ST_VAL, ST_BITS);
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174 | shiftOutBits(WRITE_OP, OP_BITS);
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175 | shiftOutBits(PHYADR_VAL, PHYADR_BITS);
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176 | shiftOutBits(addr, REGADR_BITS);
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177 | shiftOutBits(TA_VAL, TA_BITS);
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178 | shiftOutBits(value, DATA_BITS);
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179 | }
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180 |
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181 | // Create text test runner and run all tests.
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182 | int main()
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183 | {
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184 | #ifdef USE_CPPUNIT
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185 | CppUnit::TextUi::TestRunner runner;
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186 | runner.addTest( PhyTest::suite() );
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187 | return runner.run() ? 0 : 1;
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188 | #else
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189 | PhyTest Test;
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190 | return Test.run();
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191 | #endif
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192 | }
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193 |
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