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Scott Bissmeyer
2025-04-07 07:44:27 -07:00
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LibreHardwareMonitor-0.9.4/LibreHardwareMonitorLib/Hardware/Motherboard/Lpc/W836XX.cs Normal file
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// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// Copyright (C) LibreHardwareMonitor and Contributors.
// Partial Copyright (C) Michael Möller <mmoeller@openhardwaremonitor.org> and Contributors.
// All Rights Reserved.
using System;
using System.Globalization;
using System.Text;
// ReSharper disable once InconsistentNaming
namespace LibreHardwareMonitor.Hardware.Motherboard.Lpc;
internal class W836XX : ISuperIO
{
private readonly ushort _address;
private readonly byte _revision;
private readonly bool[] _peciTemperature = Array.Empty<bool>();
private readonly byte[] _voltageBank = Array.Empty<byte>();
private readonly float _voltageGain = 0.008f;
private readonly byte[] _voltageRegister = Array.Empty<byte>();
// Added to control fans.
private readonly byte[] _fanPwmRegister = Array.Empty<byte>();
private readonly byte[] _fanPrimaryControlModeRegister = Array.Empty<byte>();
private readonly byte[] _fanPrimaryControlValue = Array.Empty<byte>();
private readonly byte[] _fanSecondaryControlModeRegister = Array.Empty<byte>();
private readonly byte[] _fanSecondaryControlValue = Array.Empty<byte>();
private readonly byte[] _fanTertiaryControlModeRegister = Array.Empty<byte>();
private readonly byte[] _fanTertiaryControlValue = Array.Empty<byte>();
private readonly byte[] _initialFanControlValue = Array.Empty<byte>();
private readonly byte[] _initialFanSecondaryControlValue = Array.Empty<byte>();
private readonly byte[] _initialFanTertiaryControlValue = Array.Empty<byte>();
private readonly bool[] _restoreDefaultFanPwmControlRequired = Array.Empty<bool>();
public W836XX(Chip chip, byte revision, ushort address)
{
_address = address;
_revision = revision;
Chip = chip;
if (!IsWinbondVendor())
return;
Temperatures = new float?[3];
_peciTemperature = new bool[3];
switch (chip)
{
case Chip.W83667HG:
case Chip.W83667HGB:
// note temperature sensor registers that read PECI
byte flag = ReadByte(0, TEMPERATURE_SOURCE_SELECT_REG);
_peciTemperature[0] = (flag & 0x04) != 0;
_peciTemperature[1] = (flag & 0x40) != 0;
_peciTemperature[2] = false;
break;
case Chip.W83627DHG:
case Chip.W83627DHGP:
// note temperature sensor registers that read PECI
byte sel = ReadByte(0, TEMPERATURE_SOURCE_SELECT_REG);
_peciTemperature[0] = (sel & 0x07) != 0;
_peciTemperature[1] = (sel & 0x70) != 0;
_peciTemperature[2] = false;
break;
default:
// no PECI support
_peciTemperature[0] = false;
_peciTemperature[1] = false;
_peciTemperature[2] = false;
break;
}
switch (chip)
{
case Chip.W83627EHF:
Voltages = new float?[10];
_voltageRegister = new byte[] { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x50, 0x51, 0x52 };
_voltageBank = new byte[] { 0, 0, 0, 0, 0, 0, 0, 5, 5, 5 };
_voltageGain = 0.008f;
Fans = new float?[5];
_fanPwmRegister = new byte[] { 0x01, 0x03, 0x11 }; // Fan PWM values.
_fanPrimaryControlModeRegister = new byte[] { 0x04, 0x04, 0x12 }; // Primary control register.
_fanPrimaryControlValue = new byte[] { 0b11110011, 0b11001111, 0b11111001 }; // Values to gain control of fans.
_initialFanControlValue = new byte[3]; // To store primary default value.
_initialFanSecondaryControlValue = new byte[3]; // To store secondary default value.
Controls = new float?[3];
break;
case Chip.W83627DHG:
case Chip.W83627DHGP:
Voltages = new float?[9];
_voltageRegister = new byte[] { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x50, 0x51 };
_voltageBank = new byte[] { 0, 0, 0, 0, 0, 0, 0, 5, 5 };
_voltageGain = 0.008f;
Fans = new float?[5];
_fanPwmRegister = new byte[] { 0x01, 0x03, 0x11 }; // Fan PWM values
_fanPrimaryControlModeRegister = new byte[] { 0x04, 0x04, 0x12 }; // added. Primary control register
_fanPrimaryControlValue = new byte[] { 0b11110011, 0b11001111, 0b11111001 }; // Values to gain control of fans
_initialFanControlValue = new byte[3]; // To store primary default value
_initialFanSecondaryControlValue = new byte[3]; // To store secondary default value.
Controls = new float?[3];
break;
case Chip.W83667HG:
case Chip.W83667HGB:
Voltages = new float?[9];
_voltageRegister = new byte[] { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x50, 0x51 };
_voltageBank = new byte[] { 0, 0, 0, 0, 0, 0, 0, 5, 5 };
_voltageGain = 0.008f;
Fans = new float?[5];
_fanPwmRegister = new byte[] { 0x01, 0x03, 0x11 }; // Fan PWM values.
_fanPrimaryControlModeRegister = new byte[] { 0x04, 0x04, 0x12 }; // Primary control register.
_fanPrimaryControlValue = new byte[] { 0b11110011, 0b11001111, 0b11111001 }; // Values to gain control of fans.
_fanSecondaryControlModeRegister = new byte[] { 0x7c, 0x7c, 0x7c }; // Secondary control register for SmartFan4.
_fanSecondaryControlValue = new byte[] { 0b11101111, 0b11011111, 0b10111111 }; // Values for secondary register to gain control of fans.
_fanTertiaryControlModeRegister = new byte[] { 0x62, 0x7c, 0x62 }; // Tertiary control register. 2nd fan doesn't have Tertiary control, same as secondary to avoid change.
_fanTertiaryControlValue = new byte[] { 0b11101111, 0b11011111, 0b11011111 }; // Values for tertiary register to gain control of fans. 2nd fan doesn't have Tertiary control, same as secondary to avoid change.
_initialFanControlValue = new byte[3]; // To store primary default value.
_initialFanSecondaryControlValue = new byte[3]; // To store secondary default value.
_initialFanTertiaryControlValue = new byte[3]; // To store tertiary default value.
Controls = new float?[3];
break;
case Chip.W83627HF:
Voltages = new float?[7];
_voltageRegister = new byte[] { 0x20, 0x21, 0x22, 0x23, 0x24, 0x50, 0x51 };
_voltageBank = new byte[] { 0, 0, 0, 0, 0, 5, 5 };
_voltageGain = 0.016f;
Fans = new float?[3];
_fanPwmRegister = new byte[] { 0x5A, 0x5B }; // Fan PWM values.
Controls = new float?[2];
break;
case Chip.W83627THF:
Voltages = new float?[7];
_voltageRegister = new byte[] { 0x20, 0x21, 0x22, 0x23, 0x24, 0x50, 0x51 };
_voltageBank = new byte[] { 0, 0, 0, 0, 0, 5, 5 };
_voltageGain = 0.016f;
Fans = new float?[3];
_fanPwmRegister = new byte[] { 0x01, 0x03, 0x11 }; // Fan PWM values.
_fanPrimaryControlModeRegister = new byte[] { 0x04, 0x04, 0x12 }; // Primary control register.
_fanPrimaryControlValue = new byte[] { 0b11110011, 0b11001111, 0b11111001 }; // Values to gain control of fans.
_initialFanControlValue = new byte[3]; // To store primary default value.
Controls = new float?[3];
break;
case Chip.W83687THF:
Voltages = new float?[7];
_voltageRegister = new byte[] { 0x20, 0x21, 0x22, 0x23, 0x24, 0x50, 0x51 };
_voltageBank = new byte[] { 0, 0, 0, 0, 0, 5, 5 };
_voltageGain = 0.016f;
Fans = new float?[3];
break;
}
}
public Chip Chip { get; }
public float?[] Controls { get; } = Array.Empty<float?>();
public float?[] Fans { get; } = Array.Empty<float?>();
public float?[] Temperatures { get; } = Array.Empty<float?>();
public float?[] Voltages { get; } = Array.Empty<float?>();
public byte? ReadGpio(int index)
{
return null;
}
public void WriteGpio(int index, byte value)
{ }
public void SetControl(int index, byte? value)
{
if (index < 0 || index >= Controls.Length)
throw new ArgumentOutOfRangeException(nameof(index));
if (!Mutexes.WaitIsaBus(10))
return;
if (value.HasValue)
{
SaveDefaultFanPwmControl(index);
if (_fanPrimaryControlModeRegister.Length > 0)
{
WriteByte(0, _fanPrimaryControlModeRegister[index], (byte)(_fanPrimaryControlValue[index] & ReadByte(0, _fanPrimaryControlModeRegister[index])));
if (_fanSecondaryControlModeRegister.Length > 0)
{
if (_fanSecondaryControlModeRegister[index] != _fanPrimaryControlModeRegister[index])
{
WriteByte(0, _fanSecondaryControlModeRegister[index], (byte)(_fanSecondaryControlValue[index] & ReadByte(0, _fanSecondaryControlModeRegister[index])));
}
if (_fanTertiaryControlModeRegister.Length > 0 && _fanTertiaryControlModeRegister[index] != _fanSecondaryControlModeRegister[index])
{
WriteByte(0, _fanTertiaryControlModeRegister[index], (byte)(_fanTertiaryControlValue[index] & ReadByte(0, _fanTertiaryControlModeRegister[index])));
}
}
}
// set output value
WriteByte(0, _fanPwmRegister[index], value.Value);
}
else
{
RestoreDefaultFanPwmControl(index);
}
Mutexes.ReleaseIsaBus();
}
private void SaveDefaultFanPwmControl(int index) //added to save initial control values
{
if (_fanPrimaryControlModeRegister.Length > 0 &&
_initialFanControlValue.Length > 0 &&
_fanPrimaryControlValue.Length > 0 &&
_restoreDefaultFanPwmControlRequired.Length > 0 &&
!_restoreDefaultFanPwmControlRequired[index])
{
_initialFanControlValue[index] = ReadByte(0, _fanPrimaryControlModeRegister[index]);
if (_fanSecondaryControlModeRegister.Length > 0 && _initialFanSecondaryControlValue.Length > 0 && _fanSecondaryControlValue.Length > 0)
{
if (_fanSecondaryControlModeRegister[index] != _fanPrimaryControlModeRegister[index])
{
_initialFanSecondaryControlValue[index] = ReadByte(0, _fanSecondaryControlModeRegister[index]);
}
if (_fanTertiaryControlModeRegister.Length > 0 &&
_initialFanTertiaryControlValue.Length > 0 &&
_fanTertiaryControlValue.Length > 0 &&
_fanTertiaryControlModeRegister[index] != _fanSecondaryControlModeRegister[index])
{
_initialFanTertiaryControlValue[index] = ReadByte(0, _fanTertiaryControlModeRegister[index]);
}
}
_restoreDefaultFanPwmControlRequired[index] = true;
}
}
private void RestoreDefaultFanPwmControl(int index) //added to restore initial control values
{
if (_fanPrimaryControlModeRegister.Length > 0 &&
_initialFanControlValue.Length > 0 &&
_fanPrimaryControlValue.Length > 0 &&
_restoreDefaultFanPwmControlRequired.Length > 0 &&
_restoreDefaultFanPwmControlRequired[index])
{
WriteByte(0,
_fanPrimaryControlModeRegister[index],
(byte)((_initialFanControlValue[index] & ~_fanPrimaryControlValue[index]) |
ReadByte(0, _fanPrimaryControlModeRegister[index]))); //bitwise operands to change only desired bits
if (_fanSecondaryControlModeRegister.Length > 0 && _initialFanSecondaryControlValue.Length > 0 && _fanSecondaryControlValue.Length > 0)
{
if (_fanSecondaryControlModeRegister[index] != _fanPrimaryControlModeRegister[index])
{
WriteByte(0,
_fanSecondaryControlModeRegister[index],
(byte)((_initialFanSecondaryControlValue[index] & ~_fanSecondaryControlValue[index]) |
ReadByte(0, _fanSecondaryControlModeRegister[index]))); //bitwise operands to change only desired bits
}
if (_fanTertiaryControlModeRegister.Length > 0 &&
_initialFanTertiaryControlValue.Length > 0 &&
_fanTertiaryControlValue.Length > 0 &&
_fanTertiaryControlModeRegister[index] != _fanSecondaryControlModeRegister[index])
{
WriteByte(0,
_fanTertiaryControlModeRegister[index],
(byte)((_initialFanTertiaryControlValue[index] & ~_fanTertiaryControlValue[index]) | ReadByte(0, _fanTertiaryControlModeRegister[index]))); //bitwise operands to change only desired bits
}
}
_restoreDefaultFanPwmControlRequired[index] = false;
}
}
public void Update()
{
if (!Mutexes.WaitIsaBus(10))
return;
for (int i = 0; i < Voltages.Length; i++)
{
if (_voltageRegister[i] != VOLTAGE_VBAT_REG)
{
// two special VCore measurement modes for W83627THF
float fValue;
if ((Chip == Chip.W83627HF || Chip == Chip.W83627THF || Chip == Chip.W83687THF) && i == 0)
{
byte vrmConfiguration = ReadByte(0, 0x18);
int value = ReadByte(_voltageBank[i], _voltageRegister[i]);
if ((vrmConfiguration & 0x01) == 0)
fValue = 0.016f * value; // VRM8 formula
else
fValue = (0.00488f * value) + 0.69f; // VRM9 formula
}
else
{
int value = ReadByte(_voltageBank[i], _voltageRegister[i]);
fValue = _voltageGain * value;
}
if (fValue > 0)
Voltages[i] = fValue;
else
Voltages[i] = null;
}
else
{
// Battery voltage
bool valid = (ReadByte(0, 0x5D) & 0x01) > 0;
if (valid)
{
Voltages[i] = _voltageGain * ReadByte(5, VOLTAGE_VBAT_REG);
}
else
{
Voltages[i] = null;
}
}
}
for (int i = 0; i < Temperatures.Length; i++)
{
int value = (sbyte)ReadByte(TEMPERATURE_BANK[i], TEMPERATURE_REG[i]) << 1;
if (TEMPERATURE_BANK[i] > 0)
value |= ReadByte(TEMPERATURE_BANK[i], (byte)(TEMPERATURE_REG[i] + 1)) >> 7;
float temperature = value / 2.0f;
if (temperature is <= 125 and >= -55 && !_peciTemperature[i])
{
Temperatures[i] = temperature;
}
else
{
Temperatures[i] = null;
}
}
ulong bits = 0;
foreach (byte t in FAN_BIT_REG)
bits = (bits << 8) | ReadByte(0, t);
ulong newBits = bits;
for (int i = 0; i < Fans.Length; i++)
{
int count = ReadByte(FAN_TACHO_BANK[i], FAN_TACHO_REG[i]);
// assemble fan divisor
int divisorBits = (int)(
(((bits >> FAN_DIV_BIT2[i]) & 1) << 2) |
(((bits >> FAN_DIV_BIT1[i]) & 1) << 1) |
((bits >> FAN_DIV_BIT0[i]) & 1));
int divisor = 1 << divisorBits;
Fans[i] = count < 0xff ? 1.35e6f / (count * divisor) : 0;
switch (count)
{
// update fan divisor
case > 192 when divisorBits < 7:
divisorBits++;
break;
case < 96 when divisorBits > 0:
divisorBits--;
break;
}
newBits = SetBit(newBits, FAN_DIV_BIT2[i], (divisorBits >> 2) & 1);
newBits = SetBit(newBits, FAN_DIV_BIT1[i], (divisorBits >> 1) & 1);
newBits = SetBit(newBits, FAN_DIV_BIT0[i], divisorBits & 1);
}
for (int i = 0; i < Controls.Length; i++)
{
byte value = ReadByte(0, _fanPwmRegister[i]);
Controls[i] = (float)Math.Round(value * 100.0f / 0xFF);
}
Mutexes.ReleaseIsaBus();
}
public string GetReport()
{
StringBuilder r = new();
r.AppendLine("LPC " + GetType().Name);
r.AppendLine();
r.Append("Chip Id: 0x");
r.AppendLine(Chip.ToString("X"));
r.Append("Chip Revision: 0x");
r.AppendLine(_revision.ToString("X", CultureInfo.InvariantCulture));
r.Append("Base Address: 0x");
r.AppendLine(_address.ToString("X4", CultureInfo.InvariantCulture));
r.AppendLine();
if (!Mutexes.WaitIsaBus(100))
return r.ToString();
r.AppendLine("Hardware Monitor Registers");
r.AppendLine();
r.AppendLine(" 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F");
r.AppendLine();
for (int i = 0; i <= 0x7; i++)
{
r.Append(" ");
r.Append((i << 4).ToString("X2", CultureInfo.InvariantCulture));
r.Append(" ");
for (int j = 0; j <= 0xF; j++)
{
r.Append(" ");
r.Append(ReadByte(0, (byte)((i << 4) | j)).ToString("X2", CultureInfo.InvariantCulture));
}
r.AppendLine();
}
for (int k = 1; k <= 15; k++)
{
r.AppendLine("Bank " + k);
for (int i = 0x5; i < 0x6; i++)
{
r.Append(" ");
r.Append((i << 4).ToString("X2", CultureInfo.InvariantCulture));
r.Append(" ");
for (int j = 0; j <= 0xF; j++)
{
r.Append(" ");
r.Append(ReadByte((byte)k, (byte)((i << 4) | j)).ToString("X2", CultureInfo.InvariantCulture));
}
r.AppendLine();
}
}
r.AppendLine();
Mutexes.ReleaseIsaBus();
return r.ToString();
}
private byte ReadByte(byte bank, byte register)
{
Ring0.WriteIoPort((ushort)(_address + ADDRESS_REGISTER_OFFSET), BANK_SELECT_REGISTER);
Ring0.WriteIoPort((ushort)(_address + DATA_REGISTER_OFFSET), bank);
Ring0.WriteIoPort((ushort)(_address + ADDRESS_REGISTER_OFFSET), register);
return Ring0.ReadIoPort((ushort)(_address + DATA_REGISTER_OFFSET));
}
private void WriteByte(byte bank, byte register, byte value)
{
Ring0.WriteIoPort((ushort)(_address + ADDRESS_REGISTER_OFFSET), BANK_SELECT_REGISTER);
Ring0.WriteIoPort((ushort)(_address + DATA_REGISTER_OFFSET), bank);
Ring0.WriteIoPort((ushort)(_address + ADDRESS_REGISTER_OFFSET), register);
Ring0.WriteIoPort((ushort)(_address + DATA_REGISTER_OFFSET), value);
}
private bool IsWinbondVendor()
{
ushort vendorId = (ushort)((ReadByte(HIGH_BYTE, VENDOR_ID_REGISTER) << 8) | ReadByte(0, VENDOR_ID_REGISTER));
return vendorId == WINBOND_VENDOR_ID;
}
private static ulong SetBit(ulong target, int bit, int value)
{
if ((value & 1) != value)
throw new ArgumentException("Value must be one bit only.");
if (bit is < 0 or > 63)
throw new ArgumentException("Bit out of range.");
ulong mask = (ulong)1 << bit;
return value > 0 ? target | mask : target & ~mask;
}
// ReSharper disable InconsistentNaming
private const byte ADDRESS_REGISTER_OFFSET = 0x05;
private const byte BANK_SELECT_REGISTER = 0x4E;
private const byte DATA_REGISTER_OFFSET = 0x06;
private const byte HIGH_BYTE = 0x80;
private const byte TEMPERATURE_SOURCE_SELECT_REG = 0x49;
private const byte VENDOR_ID_REGISTER = 0x4F;
private const byte VOLTAGE_VBAT_REG = 0x51;
private const ushort WINBOND_VENDOR_ID = 0x5CA3;
private readonly byte[] FAN_BIT_REG = { 0x47, 0x4B, 0x4C, 0x59, 0x5D };
private readonly byte[] FAN_DIV_BIT0 = { 36, 38, 30, 8, 10 };
private readonly byte[] FAN_DIV_BIT1 = { 37, 39, 31, 9, 11 };
private readonly byte[] FAN_DIV_BIT2 = { 5, 6, 7, 23, 15 };
private readonly byte[] FAN_TACHO_BANK = { 0, 0, 0, 0, 5 };
private readonly byte[] FAN_TACHO_REG = { 0x28, 0x29, 0x2A, 0x3F, 0x53 };
private readonly byte[] TEMPERATURE_BANK = { 1, 2, 0 };
private readonly byte[] TEMPERATURE_REG = { 0x50, 0x50, 0x27 };
// ReSharper restore InconsistentNaming
}