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/* $Id: tstDevPhy.cpp $ */
/** @file
* PHY MDIO unit tests.
*/
/*
* Copyright (C) 2007-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#ifdef USE_CPPUNIT
# include <cppunit/ui/text/TestRunner.h>
# include <cppunit/extensions/HelperMacros.h>
#else
# include "CppUnitEmulation.h"
#endif
#include "../DevE1000Phy.h"
/**
* Test fixture for PHY MDIO/MDC interface emulation.
*/
class PhyTest
#ifdef USE_CPPUNIT
: public CppUnit::TestFixture
#endif
{
CPPUNIT_TEST_SUITE( tstDevPhy );
CPPUNIT_TEST(testSize);
CPPUNIT_TEST(testReadPID);
CPPUNIT_TEST(testReadEPID);
CPPUNIT_TEST(testWriteANA);
CPPUNIT_TEST_SUITE_END();
private:
enum Op
{
WRITE_OP = 0x1,
READ_OP = 0x2
};
#define PHYADR_VAL (uint16_t)0
#define ST_VAL (uint16_t)1
#define TA_VAL (uint16_t)2
#define PREAMBLE_VAL 0xFFFFFFFF
enum BitWidths {
ST_BITS = 2,
OP_BITS = 2,
PHYADR_BITS = 5,
REGADR_BITS = 5,
TA_BITS = 2,
DATA_BITS = 16,
PREAMBLE_BITS = 32
};
PPHY phy;
// Helper methods
void shiftOutBits(uint32_t data, uint16_t count);
uint16_t shiftInBits(uint16_t count);
int readAt(uint16_t addr);
void writeTo(uint16_t addr, uint32_t value);
public:
void setUp()
{
phy = new PHY;
Phy::init(phy, 0, PHY_EPID_M881000);
}
void tearDown()
{
delete phy;
}
void testSize()
{
CPPUNIT_ASSERT_EQUAL(32, ST_BITS+OP_BITS+PHYADR_BITS+REGADR_BITS+TA_BITS+DATA_BITS);
}
void testReadPID()
{
CPPUNIT_ASSERT_EQUAL(0x0141, readAt(2));
}
void testReadEPID()
{
CPPUNIT_ASSERT_EQUAL(0x0141, readAt(2));
CPPUNIT_ASSERT_EQUAL(PHY_EPID_M881000, readAt(3));
}
void testWriteANA()
{
writeTo(4, 0xBEEF);
CPPUNIT_ASSERT_EQUAL(0xBEEF, readAt(4));
}
};
/**
* shiftOutBits - Shift data bits our to MDIO
**/
void PhyTest::shiftOutBits(uint32_t data, uint16_t count) {
uint32_t mask = 0x01 << (count - 1);
do {
Phy::writeMDIO(phy, data & mask, NULL /*pDevIns*/);
mask >>= 1;
} while (mask);
}
/**
* shiftInBits - Shift data bits in from MDIO
**/
uint16_t PhyTest::shiftInBits(uint16_t count)
{
uint16_t data = 0;
while (count--)
{
data <<= 1;
data |= Phy::readMDIO(phy) ? 1 : 0;
}
return data;
}
int PhyTest::readAt(uint16_t addr)
{
shiftOutBits(PREAMBLE_VAL, PREAMBLE_BITS);
shiftOutBits(ST_VAL, ST_BITS);
shiftOutBits(READ_OP, OP_BITS);
shiftOutBits(PHYADR_VAL, PHYADR_BITS);
shiftOutBits(addr, REGADR_BITS);
CPPUNIT_ASSERT_EQUAL((uint16_t)0, shiftInBits(1));
uint16_t u16Data = shiftInBits(DATA_BITS);
shiftInBits(1);
return u16Data;
}
void PhyTest::writeTo(uint16_t addr, uint32_t value)
{
shiftOutBits(PREAMBLE_VAL, PREAMBLE_BITS);
shiftOutBits(ST_VAL, ST_BITS);
shiftOutBits(WRITE_OP, OP_BITS);
shiftOutBits(PHYADR_VAL, PHYADR_BITS);
shiftOutBits(addr, REGADR_BITS);
shiftOutBits(TA_VAL, TA_BITS);
shiftOutBits(value, DATA_BITS);
}
// Create text test runner and run all tests.
int main()
{
#ifdef USE_CPPUNIT
CppUnit::TextUi::TestRunner runner;
runner.addTest( PhyTest::suite() );
return runner.run() ? 0 : 1;
#else
PhyTest Test;
return Test.run();
#endif
}
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