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Implemented decoding mode page 10h for direct-access devices.

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This commit is contained in:
Natalia Portillo
2015-10-31 01:26:56 +00:00
parent 81ed7e4bd5
commit 9e6c316246
2 changed files with 229 additions and 24 deletions
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247
DiscImageChef.Decoders/SCSI/Modes.cs
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@@ -1632,6 +1632,7 @@ namespace DiscImageChef.Decoders.SCSI
/// Disconnect-reconnect page
/// Page code 0x08
/// 12 bytes in SCSI-2
/// 20 bytes in SBC-1
/// </summary>
public struct ModePage_08
{
@@ -1675,6 +1676,51 @@ namespace DiscImageChef.Decoders.SCSI
/// Upper limit on maximum pre-fetch value
/// </summary>
public ushort MaximumPreFetchCeiling;
/// <summary>
/// Manual cache controlling
/// </summary>
public bool IC;
/// <summary>
/// Abort pre-fetch
/// </summary>
public bool ABPF;
/// <summary>
/// Caching analysis permitted
/// </summary>
public bool CAP;
/// <summary>
/// Pre-fetch over discontinuities
/// </summary>
public bool Disc;
/// <summary>
/// <see cref="CacheSegmentSize"/> is to be used to control caching segmentation
/// </summary>
public bool Size;
/// <summary>
/// Force sequential write
/// </summary>
public bool FSW;
/// <summary>
/// Logical block cache segment size
/// </summary>
public bool LBCSS;
/// <summary>
/// Disable read-ahead
/// </summary>
public bool DRA;
/// <summary>
/// How many segments should the cache be divided upon
/// </summary>
public byte CacheSegments;
/// <summary>
/// How many bytes should the cache be divided upon
/// </summary>
public ushort CacheSegmentSize;
/// <summary>
/// How many bytes should be used as a buffer when all other cached data cannot be evicted
/// </summary>
public uint NonCacheSegmentSize;
}
public static ModePage_08? DecodeModePage_08(byte[] pageResponse)
@@ -1708,6 +1754,23 @@ namespace DiscImageChef.Decoders.SCSI
decoded.MaximumPreFetch = (ushort)((pageResponse[8] << 8) + pageResponse[9]);
decoded.MaximumPreFetchCeiling = (ushort)((pageResponse[10] << 8) + pageResponse[11]);
if (pageResponse.Length < 20)
return decoded;
decoded.IC |= (pageResponse[2] & 0x80) == 0x80;
decoded.ABPF |= (pageResponse[2] & 0x40) == 0x40;
decoded.CAP |= (pageResponse[2] & 0x20) == 0x20;
decoded.Disc |= (pageResponse[2] & 0x10) == 0x10;
decoded.Size |= (pageResponse[2] & 0x08) == 0x08;
decoded.FSW |= (pageResponse[12] & 0x80) == 0x80;
decoded.LBCSS |= (pageResponse[12] & 0x40) == 0x40;
decoded.DRA |= (pageResponse[12] & 0x20) == 0x20;
decoded.CacheSegments = pageResponse[13];
decoded.CacheSegmentSize = (ushort)((pageResponse[14] << 8) + pageResponse[15]);
decoded.NonCacheSegmentSize = (uint)((pageResponse[17] << 16) + (pageResponse[18] << 8) + pageResponse[19]);
return decoded;
}
@@ -1765,23 +1828,59 @@ namespace DiscImageChef.Decoders.SCSI
break;
}
if (page.MF)
sb.AppendLine("\tPre-fetch values indicate a block multiplier");
if (page.DisablePreFetch == 0)
sb.AppendLine("\tNo pre-fetch will be done");
if (page.DRA)
sb.AppendLine("\tRead-ahead is disabled");
else
{
sb.AppendFormat("\tPre-fetch will be done for READ commands of {0} blocks or less", page.DisablePreFetch).AppendLine();
if (page.MF)
sb.AppendLine("\tPre-fetch values indicate a block multiplier");
if (page.MinimumPreFetch > 0)
sb.AppendFormat("At least {0} blocks will be always pre-fetched", page.MinimumPreFetch).AppendLine();
if(page.MaximumPreFetch > 0)
sb.AppendFormat("\tA maximum of {0} blocks will be pre-fetched", page.MaximumPreFetch).AppendLine();
if(page.MaximumPreFetchCeiling > 0)
sb.AppendFormat("\tA maximum of {0} blocks will be pre-fetched even if it is commanded to pre-fetch more", page.MaximumPreFetchCeiling).AppendLine();
if (page.DisablePreFetch == 0)
sb.AppendLine("\tNo pre-fetch will be done");
else
{
sb.AppendFormat("\tPre-fetch will be done for READ commands of {0} blocks or less", page.DisablePreFetch).AppendLine();
if (page.MinimumPreFetch > 0)
sb.AppendFormat("At least {0} blocks will be always pre-fetched", page.MinimumPreFetch).AppendLine();
if (page.MaximumPreFetch > 0)
sb.AppendFormat("\tA maximum of {0} blocks will be pre-fetched", page.MaximumPreFetch).AppendLine();
if (page.MaximumPreFetchCeiling > 0)
sb.AppendFormat("\tA maximum of {0} blocks will be pre-fetched even if it is commanded to pre-fetch more", page.MaximumPreFetchCeiling).AppendLine();
if (page.IC)
sb.AppendLine("\tDevice should use number of cache segments or cache segment size for caching");
if (page.ABPF)
sb.AppendLine("\tPre-fetch should be aborted upong receiving a new command");
if (page.CAP)
sb.AppendLine("\tCaching analysis is permitted");
if (page.Disc)
sb.AppendLine("\tPre-fetch can continue across discontinuities (such as cylinders or tracks)");
}
}
if (page.FSW)
sb.AppendLine("\tDrive should not reorder the sequence of write commands to be faster");
if (page.Size)
{
if (page.CacheSegmentSize > 0)
{
if (page.LBCSS)
sb.AppendFormat("\tDrive cache segments should be {0} blocks long", page.CacheSegmentSize).AppendLine();
else
sb.AppendFormat("\tDrive cache segments should be {0} bytes long", page.CacheSegmentSize).AppendLine();
}
}
else
{
if (page.CacheSegments > 0)
sb.AppendFormat("\tDrive should have {0} cache segments", page.CacheSegments).AppendLine();
}
if (page.NonCacheSegmentSize > 0)
sb.AppendFormat("\tDrive shall allocate {0} bytes to buffer even when all cached data cannot be evicted", page.NonCacheSegmentSize).AppendLine();
return sb.ToString();
}
#endregion Mode Page 0x08: Caching page
@@ -1790,7 +1889,7 @@ namespace DiscImageChef.Decoders.SCSI
/// <summary>
/// Disconnect-reconnect page
/// Page code 0x05
/// 32 bytes in SCSI-2
/// 32 bytes in SCSI-2, SBC-1
/// </summary>
public struct ModePage_05
{
@@ -2121,7 +2220,7 @@ namespace DiscImageChef.Decoders.SCSI
/// <summary>
/// Disconnect-reconnect page
/// Page code 0x03
/// 24 bytes in SCSI-2
/// 24 bytes in SCSI-2, SBC-1
/// </summary>
public struct ModePage_03
{
@@ -2342,7 +2441,7 @@ namespace DiscImageChef.Decoders.SCSI
/// <summary>
/// Disconnect-reconnect page
/// Page code 0x01
/// 12 bytes in SCSI-2
/// 12 bytes in SCSI-2, SBC-1
/// </summary>
public struct ModePage_01
{
@@ -2500,7 +2599,7 @@ namespace DiscImageChef.Decoders.SCSI
/// <summary>
/// Disconnect-reconnect page
/// Page code 0x04
/// 24 bytes in SCSI-2
/// 24 bytes in SCSI-2, SBC-1
/// </summary>
public struct ModePage_04
{
@@ -2635,7 +2734,7 @@ namespace DiscImageChef.Decoders.SCSI
/// <summary>
/// Disconnect-reconnect page
/// Page code 0x07
/// 12 bytes in SCSI-2
/// 12 bytes in SCSI-2, SBC-1
/// </summary>
public struct ModePage_07
{
@@ -2746,7 +2845,7 @@ namespace DiscImageChef.Decoders.SCSI
/// Page code 0x10
/// 16 bytes in SCSI-2
/// </summary>
public struct ModePage_10
public struct ModePage_10_SSC
{
/// <summary>
/// Parameters can be saved
@@ -2834,7 +2933,7 @@ namespace DiscImageChef.Decoders.SCSI
public byte SelectedCompression;
}
public static ModePage_10? DecodeModePage_10(byte[] pageResponse)
public static ModePage_10_SSC? DecodeModePage_10_SSC(byte[] pageResponse)
{
if (pageResponse == null)
return null;
@@ -2851,7 +2950,7 @@ namespace DiscImageChef.Decoders.SCSI
if (pageResponse.Length < 16)
return null;
ModePage_10 decoded = new ModePage_10();
ModePage_10_SSC decoded = new ModePage_10_SSC();
decoded.PS |= (pageResponse[0] & 0x80) == 0x80;
decoded.CAP |= (pageResponse[2] & 0x40) == 0x40;
@@ -2876,17 +2975,17 @@ namespace DiscImageChef.Decoders.SCSI
return decoded;
}
public static string PrettifyModePage_10(byte[] pageResponse)
public static string PrettifyModePage_10_SSC(byte[] pageResponse)
{
return PrettifyModePage_10(DecodeModePage_10(pageResponse));
return PrettifyModePage_10_SSC(DecodeModePage_10_SSC(pageResponse));
}
public static string PrettifyModePage_10(ModePage_10? modePage)
public static string PrettifyModePage_10_SSC(ModePage_10_SSC? modePage)
{
if (!modePage.HasValue)
return null;
ModePage_10 page = modePage.Value;
ModePage_10_SSC page = modePage.Value;
StringBuilder sb = new StringBuilder();
sb.AppendLine("SCSI Device configuration page:");
@@ -4594,6 +4693,106 @@ namespace DiscImageChef.Decoders.SCSI
return sb.ToString();
}
#endregion Mode Page 0x1A subpage 0x01: Power Consumption mode page
#region Mode Page 0x10: XOR control mode page
/// <summary>
/// XOR control mode page
/// Page code 0x10
/// 24 bytes in SBC-1
/// </summary>
public struct ModePage_10
{
/// <summary>
/// Parameters can be saved
/// </summary>
public bool PS;
/// <summary>
/// Disables XOR operations
/// </summary>
public bool XORDIS;
/// <summary>
/// Maximum transfer length in blocks for a XOR command
/// </summary>
public uint MaxXorWrite;
/// <summary>
/// Maximum regenerate length in blocks
/// </summary>
public uint MaxRegenSize;
/// <summary>
/// Maximum transfer length in blocks for READ during a rebuild
/// </summary>
public uint MaxRebuildRead;
/// <summary>
/// Minimum time in ms between READs during a rebuild
/// </summary>
public ushort RebuildDelay;
}
public static ModePage_10? DecodeModePage_10(byte[] pageResponse)
{
if (pageResponse == null)
return null;
if ((pageResponse[0] & 0x40) == 0x40)
return null;
if ((pageResponse[0] & 0x3F) != 0x10)
return null;
if (pageResponse[1] + 2 != pageResponse.Length)
return null;
if (pageResponse.Length < 24)
return null;
ModePage_10 decoded = new ModePage_10();
decoded.PS |= (pageResponse[0] & 0x80) == 0x80;
decoded.XORDIS |= (pageResponse[2] & 0x02) == 0x02;
decoded.MaxXorWrite = (uint)((pageResponse[4] << 24) + (pageResponse[5] << 16) + (pageResponse[6] << 8) + pageResponse[7]);
decoded.MaxRegenSize = (uint)((pageResponse[12] << 24) + (pageResponse[13] << 16) + (pageResponse[14] << 8) + pageResponse[15]);
decoded.MaxRebuildRead = (uint)((pageResponse[16] << 24) + (pageResponse[17] << 16) + (pageResponse[18] << 8) + pageResponse[19]);
decoded.RebuildDelay = (ushort)((pageResponse[22] << 8) + pageResponse[23]);
return decoded;
}
public static string PrettifyModePage_10(byte[] pageResponse)
{
return PrettifyModePage_10(DecodeModePage_10(pageResponse));
}
public static string PrettifyModePage_10(ModePage_10? modePage)
{
if (!modePage.HasValue)
return null;
ModePage_10 page = modePage.Value;
StringBuilder sb = new StringBuilder();
sb.AppendLine("SCSI XOR control mode page:");
if (page.PS)
sb.AppendLine("\tParameters can be saved");
if (page.XORDIS)
sb.AppendLine("\tXOR operations are disabled");
else
{
if (page.MaxXorWrite > 0)
sb.AppendFormat("\tDrive accepts a maximum of {0} blocks in a single XOR WRITE command", page.MaxXorWrite).AppendLine();
if (page.MaxRegenSize > 0)
sb.AppendFormat("\tDrive accepts a maximum of {0} blocks in a REGENERATE command", page.MaxRegenSize).AppendLine();
if (page.MaxRebuildRead > 0)
sb.AppendFormat("\tDrive accepts a maximum of {0} blocks in a READ command during rebuild", page.MaxRebuildRead).AppendLine();
if (page.RebuildDelay > 0)
sb.AppendFormat("\tDrive needs a minimum of {0} ms between READ commands during rebuild", page.RebuildDelay).AppendLine();
}
return sb.ToString();
}
#endregion Mode Page 0x10: XOR control mode page
}
}