public static byte[] EncodeModePage_01_MMC(ModePage_01_MMC page)
{
byte[] pg = new byte[12];
pg[0] = 0x01;
pg[1] = 10;
if (page.PS)
{
pg[0] += 0x80;
}
pg[2] = page.Parameter;
pg[3] = page.ReadRetryCount;
// This is from a newer version of SCSI unknown what happen for drives expecting an 8 byte page
pg[8] = page.WriteRetryCount;
pg[10] = (byte)((page.RecoveryTimeLimit & 0xFF00) << 8);
pg[11] = (byte)(page.RecoveryTimeLimit & 0xFF);
return(pg);
}
public static ModePage_01_MMC?DecodeModePage_01_MMC(byte[] pageResponse)
{
if ((pageResponse?[0] &0x40) == 0x40)
{
return(null);
}
if ((pageResponse?[0] &0x3F) != 0x01)
{
return(null);
}
if (pageResponse[1] + 2 != pageResponse.Length)
{
return(null);
}
if (pageResponse.Length < 8)
{
return(null);
}
ModePage_01_MMC decoded = new ModePage_01_MMC();
decoded.PS |= (pageResponse[0] & 0x80) == 0x80;
decoded.Parameter = pageResponse[2];
decoded.ReadRetryCount = pageResponse[3];
if (pageResponse.Length < 12)
{
return(decoded);
}
decoded.WriteRetryCount = pageResponse[8];
decoded.RecoveryTimeLimit = (ushort)((pageResponse[10] << 8) + pageResponse[11]);
return(decoded);
}
public static string PrettifyModePage_01_MMC(ModePage_01_MMC?modePage)
{
if (!modePage.HasValue)
{
return(null);
}
ModePage_01_MMC page = modePage.Value;
StringBuilder sb = new StringBuilder();
sb.AppendLine("SCSI Read error recovery page for MultiMedia Devices:");
if (page.PS)
{
sb.AppendLine("\tParameters can be saved");
}
if (page.ReadRetryCount > 0)
{
sb.AppendFormat("\tDrive will repeat read operations {0} times", page.ReadRetryCount).AppendLine();
}
string AllUsed = "\tAll available recovery procedures will be used.\n";
string CIRCRetriesUsed = "\tOnly retries and CIRC are used.\n";
string RetriesUsed = "\tOnly retries are used.\n";
string RecoveredNotReported = "\tRecovered errors will not be reported.\n";
string RecoveredReported = "\tRecovered errors will be reported.\n";
string RecoveredAbort = "\tRecovered errors will be reported and aborted with CHECK CONDITION.\n";
string UnrecECCAbort = "\tUnrecovered ECC errors will return CHECK CONDITION.";
string UnrecCIRCAbort = "\tUnrecovered CIRC errors will return CHECK CONDITION.";
string UnrecECCNotAbort = "\tUnrecovered ECC errors will not abort the transfer.";
string UnrecCIRCNotAbort = "\tUnrecovered CIRC errors will not abort the transfer.";
string UnrecECCAbortData =
"\tUnrecovered ECC errors will return CHECK CONDITION and the uncorrected data.";
string UnrecCIRCAbortData =
"\tUnrecovered CIRC errors will return CHECK CONDITION and the uncorrected data.";
switch (page.Parameter)
{
case 0x00:
sb.AppendLine(AllUsed + RecoveredNotReported + UnrecECCAbort);
break;
case 0x01:
sb.AppendLine(CIRCRetriesUsed + RecoveredNotReported + UnrecCIRCAbort);
break;
case 0x04:
sb.AppendLine(AllUsed + RecoveredReported + UnrecECCAbort);
break;
case 0x05:
sb.AppendLine(CIRCRetriesUsed + RecoveredReported + UnrecCIRCAbort);
break;
case 0x06:
sb.AppendLine(AllUsed + RecoveredAbort + UnrecECCAbort);
break;
case 0x07:
sb.AppendLine(RetriesUsed + RecoveredAbort + UnrecCIRCAbort);
break;
case 0x10:
sb.AppendLine(AllUsed + RecoveredNotReported + UnrecECCNotAbort);
break;
case 0x11:
sb.AppendLine(CIRCRetriesUsed + RecoveredNotReported + UnrecCIRCNotAbort);
break;
case 0x14:
sb.AppendLine(AllUsed + RecoveredReported + UnrecECCNotAbort);
break;
case 0x15:
sb.AppendLine(CIRCRetriesUsed + RecoveredReported + UnrecCIRCNotAbort);
break;
case 0x20:
sb.AppendLine(AllUsed + RecoveredNotReported + UnrecECCAbortData);
break;
case 0x21:
sb.AppendLine(CIRCRetriesUsed + RecoveredNotReported + UnrecCIRCAbortData);
break;
case 0x24:
sb.AppendLine(AllUsed + RecoveredReported + UnrecECCAbortData);
break;
case 0x25:
sb.AppendLine(CIRCRetriesUsed + RecoveredReported + UnrecCIRCAbortData);
break;
case 0x26:
sb.AppendLine(AllUsed + RecoveredAbort + UnrecECCAbortData);
break;
case 0x27:
sb.AppendLine(RetriesUsed + RecoveredAbort + UnrecCIRCAbortData);
break;
case 0x30: goto case 0x10;
case 0x31: goto case 0x11;
case 0x34: goto case 0x14;
case 0x35: goto case 0x15;
default:
sb.AppendFormat("Unknown recovery parameter 0x{0:X2}", page.Parameter).AppendLine();
break;
}
if (page.WriteRetryCount > 0)
{
sb.AppendFormat("\tDrive will repeat write operations {0} times", page.WriteRetryCount).AppendLine();
}
if (page.RecoveryTimeLimit > 0)
{
sb.AppendFormat("\tDrive will employ a maximum of {0} ms to recover data", page.RecoveryTimeLimit)
.AppendLine();
}
return(sb.ToString());
}
