public static ModePage_02?DecodeModePage_02(byte[] pageResponse) { if ((pageResponse?[0] &0x40) == 0x40) { return(null); } if ((pageResponse?[0] &0x3F) != 0x02) { return(null); } if (pageResponse[1] + 2 != pageResponse.Length) { return(null); } if (pageResponse.Length < 12) { return(null); } var decoded = new ModePage_02(); decoded.PS |= (pageResponse[0] & 0x80) == 0x80; decoded.BufferFullRatio = pageResponse[2]; decoded.BufferEmptyRatio = pageResponse[3]; decoded.BusInactivityLimit = (ushort)((pageResponse[4] << 8) + pageResponse[5]); decoded.DisconnectTimeLimit = (ushort)((pageResponse[6] << 8) + pageResponse[7]); decoded.ConnectTimeLimit = (ushort)((pageResponse[8] << 8) + pageResponse[9]); decoded.MaxBurstSize = (ushort)((pageResponse[10] << 8) + pageResponse[11]); if (pageResponse.Length >= 13) { decoded.EMDP |= (pageResponse[12] & 0x80) == 0x80; decoded.DIMM |= (pageResponse[12] & 0x08) == 0x08; decoded.FairArbitration = (byte)((pageResponse[12] & 0x70) >> 4); decoded.DTDC = (byte)(pageResponse[12] & 0x07); } if (pageResponse.Length >= 16) { decoded.FirstBurstSize = (ushort)((pageResponse[14] << 8) + pageResponse[15]); } return(decoded); }
public static string PrettifyModePage_02(ModePage_02?modePage) { if (!modePage.HasValue) { return(null); } ModePage_02 page = modePage.Value; var sb = new StringBuilder(); sb.AppendLine("SCSI Disconnect-Reconnect mode page:"); if (page.PS) { sb.AppendLine("\tParameters can be saved"); } if (page.BufferFullRatio > 0) { sb.AppendFormat("\t{0} ratio of buffer that shall be full prior to attempting a reselection", page.BufferFullRatio).AppendLine(); } if (page.BufferEmptyRatio > 0) { sb.AppendFormat("\t{0} ratio of buffer that shall be empty prior to attempting a reselection", page.BufferEmptyRatio).AppendLine(); } if (page.BusInactivityLimit > 0) { sb.AppendFormat("\t{0} µs maximum permitted to assert BSY without a REQ/ACK handshake", page.BusInactivityLimit * 100).AppendLine(); } if (page.DisconnectTimeLimit > 0) { sb.AppendFormat("\t{0} µs maximum permitted wait after releasing the bus before attempting reselection", page.DisconnectTimeLimit * 100).AppendLine(); } if (page.ConnectTimeLimit > 0) { sb. AppendFormat("\t{0} µs allowed to use the bus before disconnecting, if granted the privilege and not restricted", page.ConnectTimeLimit * 100).AppendLine(); } if (page.MaxBurstSize > 0) { sb.AppendFormat("\t{0} bytes maximum can be transferred before disconnecting", page.MaxBurstSize * 512). AppendLine(); } if (page.FirstBurstSize > 0) { sb. AppendFormat("\t{0} bytes maximum can be transferred for a command along with the disconnect command", page.FirstBurstSize * 512).AppendLine(); } if (page.DIMM) { sb.AppendLine("\tTarget shall not transfer data for a command during the same interconnect tenancy"); } if (page.EMDP) { sb.AppendLine("\tTarget is allowed to re-order the data transfer"); } switch (page.DTDC) { case 0: sb.AppendLine("\tData transfer disconnect control is not used"); break; case 1: sb.AppendLine("\tAll data for a command shall be transferred within a single interconnect tenancy"); break; case 3: sb.AppendLine("\tAll data and the response for a command shall be transferred within a single interconnect tenancy"); break; default: sb.AppendFormat("\tReserved data transfer disconnect control value {0}", page.DTDC).AppendLine(); break; } return(sb.ToString()); }