[31880] | 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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[98103] | 7 | * Copyright (C) 2007-2023 Oracle and/or its affiliates.
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[31880] | 8 | *
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[96407] | 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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[31880] | 26 | */
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| 27 |
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| 28 |
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[98172] | 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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[31880] | 39 | #include "../DevE1000Phy.h"
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| 40 |
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[98172] | 41 |
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[31880] | 42 | /**
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| 43 | * Test fixture for PHY MDIO/MDC interface emulation.
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| 44 | */
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[98172] | 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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[31880] | 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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[103410] | 99 | phy = NULL;
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[31880] | 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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[81410] | 133 | Phy::writeMDIO(phy, data & mask, NULL /*pDevIns*/);
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[31880] | 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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[98171] | 182 | int main()
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[31880] | 183 | {
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[98172] | 184 | #ifdef USE_CPPUNIT
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[31880] | 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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[98172] | 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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[31880] | 192 | }
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| 193 |
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