Added additional smart attribute identification and a write amplification sensor for Sandforce based SSDs.
3 Version: MPL 1.1/GPL 2.0/LGPL 2.1
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6 1.1 (the "License"); you may not use this file except in compliance with
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12 WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 for the specific language governing rights and limitations under the License.
15 The Original Code is the Open Hardware Monitor code.
17 The Initial Developer of the Original Code is
18 Michael Möller <m.moeller@gmx.ch>.
19 Portions created by the Initial Developer are Copyright (C) 2009-2012
20 the Initial Developer. All Rights Reserved.
25 Alternatively, the contents of this file may be used under the terms of
26 either the GNU General Public License Version 2 or later (the "GPL"), or
27 the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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39 namespace OpenHardwareMonitor.Hardware.HDD {
40 using System.Collections.Generic;
42 [NamePrefix(""), RequireSmart(0xAB), RequireSmart(0xB1)]
43 internal class SSDSandforce : AbstractHarddrive {
45 private static readonly IEnumerable<SmartAttribute> smartAttributes =
46 new List<SmartAttribute> {
47 new SmartAttribute(0x01, SmartNames.RawReadErrorRate),
48 new SmartAttribute(0x05, SmartNames.RetiredBlockCount, RawToInt),
49 new SmartAttribute(0x09, SmartNames.PowerOnHours, RawToInt),
50 new SmartAttribute(0x0C, SmartNames.PowerCycleCount, RawToInt),
51 new SmartAttribute(0xAB, SmartNames.ProgramFailCount, RawToInt),
52 new SmartAttribute(0xAC, SmartNames.EraseFailCount, RawToInt),
53 new SmartAttribute(0xAE, SmartNames.UnexpectedPowerLossCount, RawToInt),
54 new SmartAttribute(0xB1, SmartNames.WearRangeDelta, RawToInt),
55 new SmartAttribute(0xB5, SmartNames.AlternativeProgramFailCount, RawToInt),
56 new SmartAttribute(0xB6, SmartNames.AlternativeEraseFailCount, RawToInt),
57 new SmartAttribute(0xBB, SmartNames.UncorrectableErrorCount, RawToInt),
58 new SmartAttribute(0xC2, SmartNames.Temperature,
59 (byte[] raw, byte value) => { return value; }),
60 new SmartAttribute(0xC3, SmartNames.UnrecoverableEcc),
61 new SmartAttribute(0xC4, SmartNames.ReallocationEventCount, RawToInt),
62 new SmartAttribute(0xE7, SmartNames.RemainingLife, null,
64 new SmartAttribute(0xE9, SmartNames.ControllerWritesToNAND, RawToInt,
66 new SmartAttribute(0xEA, SmartNames.HostWritesToController, RawToInt,
68 new SmartAttribute(0xF1, SmartNames.HostWrites, RawToInt,
70 new SmartAttribute(0xF2, SmartNames.HostReads, RawToInt,
74 private Sensor writeAmplification;
76 public SSDSandforce(ISmart smart, string name, string firmwareRevision,
77 int index, ISettings settings)
78 : base(smart, name, firmwareRevision, index, smartAttributes, settings)
80 this.writeAmplification = new Sensor("Write Amplification", 1,
81 SensorType.Level, this, settings);
84 public override void UpdateAdditionalSensors(DriveAttributeValue[] values) {
85 float? controllerWritesToNAND = null;
86 float? hostWritesToController = null;
87 foreach (DriveAttributeValue value in values) {
88 if (value.Identifier == 0xE9)
89 controllerWritesToNAND = RawToInt(value.RawValue, value.AttrValue);
91 if (value.Identifier == 0xEA)
92 hostWritesToController = RawToInt(value.RawValue, value.AttrValue);
94 if (controllerWritesToNAND.HasValue && hostWritesToController.HasValue) {
95 writeAmplification.Value = 100 *
96 controllerWritesToNAND.Value / hostWritesToController.Value;
97 ActivateSensor(writeAmplification);