moel@16: /*
moel@16:
moel@344: This Source Code Form is subject to the terms of the Mozilla Public
moel@344: License, v. 2.0. If a copy of the MPL was not distributed with this
moel@344: file, You can obtain one at http://mozilla.org/MPL/2.0/.
moel@16:
moel@344: Copyright (C) 2009-2012 Michael Möller <mmoeller@openhardwaremonitor.org>
moel@344:
moel@16: */
moel@16:
moel@166: using System.Globalization;
moel@16: using System.Text;
moel@16:
moel@16: namespace OpenHardwareMonitor.Hardware.LPC {
moel@165: internal class IT87XX : ISuperIO {
moel@130:
moel@195: private readonly ushort address;
moel@195: private readonly Chip chip;
moel@195: private readonly byte version;
moel@16:
moel@228: private readonly ushort gpioAddress;
moel@228: private readonly int gpioCount;
moel@228:
moel@78: private readonly ushort addressReg;
moel@78: private readonly ushort dataReg;
moel@78:
moel@195: private readonly float?[] voltages = new float?[0];
moel@195: private readonly float?[] temperatures = new float?[0];
moel@195: private readonly float?[] fans = new float?[0];
moel@323: private readonly float?[] controls = new float?[0];
moel@170:
moel@170: private readonly float voltageGain;
moel@272: private readonly bool has16bitFanCounter;
moel@16:
moel@16: // Consts
moel@16: private const byte ITE_VENDOR_ID = 0x90;
moel@16:
moel@16: // Environment Controller
moel@16: private const byte ADDRESS_REGISTER_OFFSET = 0x05;
moel@16: private const byte DATA_REGISTER_OFFSET = 0x06;
moel@16:
moel@16: // Environment Controller Registers
moel@16: private const byte CONFIGURATION_REGISTER = 0x00;
moel@16: private const byte TEMPERATURE_BASE_REG = 0x29;
moel@16: private const byte VENDOR_ID_REGISTER = 0x58;
moel@272: private const byte FAN_TACHOMETER_DIVISOR_REGISTER = 0x0B;
moel@195: private readonly byte[] FAN_TACHOMETER_REG =
moel@16: new byte[] { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
moel@195: private readonly byte[] FAN_TACHOMETER_EXT_REG =
moel@16: new byte[] { 0x18, 0x19, 0x1a, 0x81, 0x83 };
moel@78: private const byte VOLTAGE_BASE_REG = 0x20;
moel@78:
moel@78: private byte ReadByte(byte register, out bool valid) {
moel@236: Ring0.WriteIoPort(addressReg, register);
moel@236: byte value = Ring0.ReadIoPort(dataReg);
moel@236: valid = register == Ring0.ReadIoPort(addressReg);
moel@78: return value;
moel@228: }
moel@16:
moel@247: private bool WriteByte(byte register, byte value) {
moel@247: Ring0.WriteIoPort(addressReg, register);
moel@247: Ring0.WriteIoPort(dataReg, value);
moel@272: return register == Ring0.ReadIoPort(addressReg);
moel@320: }
moel@247:
moel@228: public byte? ReadGPIO(int index) {
moel@228: if (index >= gpioCount)
moel@228: return null;
moel@228:
moel@236: return Ring0.ReadIoPort((ushort)(gpioAddress + index));
moel@228: }
moel@228:
moel@228: public void WriteGPIO(int index, byte value) {
moel@228: if (index >= gpioCount)
moel@228: return;
moel@228:
moel@236: Ring0.WriteIoPort((ushort)(gpioAddress + index), value);
moel@341: }
moel@228:
moel@323: public void SetControl(int index, byte? value) { }
moel@323:
moel@228: public IT87XX(Chip chip, ushort address, ushort gpioAddress, byte version) {
moel@272:
moel@16: this.address = address;
moel@130: this.chip = chip;
moel@145: this.version = version;
moel@78: this.addressReg = (ushort)(address + ADDRESS_REGISTER_OFFSET);
moel@78: this.dataReg = (ushort)(address + DATA_REGISTER_OFFSET);
moel@228: this.gpioAddress = gpioAddress;
moel@228:
moel@16: // Check vendor id
moel@78: bool valid;
moel@78: byte vendorId = ReadByte(VENDOR_ID_REGISTER, out valid);
moel@78: if (!valid || vendorId != ITE_VENDOR_ID)
moel@16: return;
moel@16:
moel@16: // Bit 0x10 of the configuration register should always be 1
moel@78: if ((ReadByte(CONFIGURATION_REGISTER, out valid) & 0x10) == 0)
moel@78: return;
moel@78: if (!valid)
moel@16: return;
moel@16:
moel@130: voltages = new float?[9];
moel@130: temperatures = new float?[3];
moel@353: fans = new float?[chip == Chip.IT8705F ? 3 : 5];
moel@170:
moel@320: // IT8721F, IT8728F and IT8772E use a 12mV resultion ADC, all others 16mV
moel@341: if (chip == Chip.IT8721F || chip == Chip.IT8728F || chip == Chip.IT8771E
moel@341: || chip == Chip.IT8772E)
moel@319: {
moel@170: voltageGain = 0.012f;
moel@170: } else {
moel@272: voltageGain = 0.016f;
moel@272: }
moel@272:
moel@353: // older IT8705F and IT8721F revisions do not have 16-bit fan counters
moel@353: if ((chip == Chip.IT8705F && version < 3) ||
moel@353: (chip == Chip.IT8712F && version < 8))
moel@353: {
moel@272: has16bitFanCounter = false;
moel@272: } else {
moel@272: has16bitFanCounter = true;
moel@170: }
moel@228:
moel@228: // Set the number of GPIO sets
moel@228: switch (chip) {
moel@228: case Chip.IT8712F:
moel@228: case Chip.IT8716F:
moel@228: case Chip.IT8718F:
moel@228: case Chip.IT8726F:
moel@228: gpioCount = 5;
moel@228: break;
moel@228: case Chip.IT8720F:
moel@228: case Chip.IT8721F:
moel@228: gpioCount = 8;
moel@228: break;
moel@353: case Chip.IT8705F:
moel@277: case Chip.IT8728F:
moel@341: case Chip.IT8771E:
moel@319: case Chip.IT8772E:
moel@277: gpioCount = 0;
moel@277: break;
moel@228: }
moel@16: }
moel@16:
moel@130: public Chip Chip { get { return chip; } }
moel@130: public float?[] Voltages { get { return voltages; } }
moel@130: public float?[] Temperatures { get { return temperatures; } }
moel@130: public float?[] Fans { get { return fans; } }
moel@323: public float?[] Controls { get { return controls; } }
moel@16:
moel@130: public string GetReport() {
moel@16: StringBuilder r = new StringBuilder();
moel@16:
moel@31: r.AppendLine("LPC " + this.GetType().Name);
moel@16: r.AppendLine();
moel@16: r.Append("Chip ID: 0x"); r.AppendLine(chip.ToString("X"));
moel@166: r.Append("Chip Version: 0x"); r.AppendLine(
moel@166: version.ToString("X", CultureInfo.InvariantCulture));
moel@166: r.Append("Base Address: 0x"); r.AppendLine(
moel@166: address.ToString("X4", CultureInfo.InvariantCulture));
moel@228: r.Append("GPIO Address: 0x"); r.AppendLine(
moel@228: gpioAddress.ToString("X4", CultureInfo.InvariantCulture));
moel@16: r.AppendLine();
moel@162:
moel@236: if (!Ring0.WaitIsaBusMutex(100))
moel@162: return r.ToString();
moel@162:
moel@16: r.AppendLine("Environment Controller Registers");
moel@16: r.AppendLine();
moel@16: r.AppendLine(" 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F");
moel@16: r.AppendLine();
moel@16: for (int i = 0; i <= 0xA; i++) {
moel@166: r.Append(" ");
moel@166: r.Append((i << 4).ToString("X2", CultureInfo.InvariantCulture));
moel@166: r.Append(" ");
moel@16: for (int j = 0; j <= 0xF; j++) {
moel@16: r.Append(" ");
moel@78: bool valid;
moel@78: byte value = ReadByte((byte)((i << 4) | j), out valid);
moel@195: r.Append(
moel@195: valid ? value.ToString("X2", CultureInfo.InvariantCulture) : "??");
moel@16: }
moel@16: r.AppendLine();
moel@16: }
moel@16: r.AppendLine();
moel@16:
moel@228: r.AppendLine("GPIO Registers");
moel@228: r.AppendLine();
moel@228: for (int i = 0; i < gpioCount; i++) {
moel@228: r.Append(" ");
moel@228: r.Append(ReadGPIO(i).Value.ToString("X2",
moel@228: CultureInfo.InvariantCulture));
moel@228: }
moel@228: r.AppendLine();
moel@228: r.AppendLine();
moel@228:
moel@236: Ring0.ReleaseIsaBusMutex();
moel@162:
moel@16: return r.ToString();
moel@16: }
moel@16:
moel@130: public void Update() {
moel@236: if (!Ring0.WaitIsaBusMutex(10))
moel@162: return;
moel@16:
moel@130: for (int i = 0; i < voltages.Length; i++) {
moel@78: bool valid;
moel@170:
moel@170: float value =
moel@170: voltageGain * ReadByte((byte)(VOLTAGE_BASE_REG + i), out valid);
moel@170:
moel@130: if (!valid)
moel@130: continue;
moel@130: if (value > 0)
moel@130: voltages[i] = value;
moel@130: else
moel@130: voltages[i] = null;
moel@130: }
moel@130:
moel@130: for (int i = 0; i < temperatures.Length; i++) {
moel@130: bool valid;
moel@130: sbyte value = (sbyte)ReadByte(
moel@130: (byte)(TEMPERATURE_BASE_REG + i), out valid);
moel@78: if (!valid)
moel@78: continue;
moel@78:
moel@130: if (value < sbyte.MaxValue && value > 0)
moel@130: temperatures[i] = value;
moel@130: else
moel@130: temperatures[i] = null;
moel@16: }
moel@16:
moel@272: if (has16bitFanCounter) {
moel@272: for (int i = 0; i < fans.Length; i++) {
moel@272: bool valid;
moel@272: int value = ReadByte(FAN_TACHOMETER_REG[i], out valid);
moel@272: if (!valid)
moel@272: continue;
moel@272: value |= ReadByte(FAN_TACHOMETER_EXT_REG[i], out valid) << 8;
moel@272: if (!valid)
moel@272: continue;
moel@16:
moel@272: if (value > 0x3f) {
moel@272: fans[i] = (value < 0xffff) ? 1.35e6f / (value * 2) : 0;
moel@272: } else {
moel@272: fans[i] = null;
moel@272: }
moel@272: }
moel@272: } else {
moel@272: for (int i = 0; i < fans.Length; i++) {
moel@272: bool valid;
moel@272: int value = ReadByte(FAN_TACHOMETER_REG[i], out valid);
moel@272: if (!valid)
moel@272: continue;
moel@272:
moel@272: int divisor = 2;
moel@272: if (i < 2) {
moel@272: int divisors = ReadByte(FAN_TACHOMETER_DIVISOR_REGISTER, out valid);
moel@272: if (!valid)
moel@272: continue;
moel@272: divisor = 1 << ((divisors >> (3 * i)) & 0x7);
moel@272: }
moel@272:
moel@272: if (value > 0) {
moel@272: fans[i] = (value < 0xff) ? 1.35e6f / (value * divisor) : 0;
moel@272: } else {
moel@272: fans[i] = null;
moel@272: }
moel@16: }
moel@162: }
moel@162:
moel@236: Ring0.ReleaseIsaBusMutex();
moel@126: }
moel@130: }
moel@16: }