898 lines
30 KiB
C
898 lines
30 KiB
C
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/*++
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Copyright (C) Microsoft Corporation, 1993 - 1999
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Module Name:
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p12843dl.c
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Abstract:
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This module contains utility code used by 1284.3 Data Link.
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Author:
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Robbie Harris (Hewlett-Packard) 10-September-1998
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Environment:
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Kernel mode
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Revision History :
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--*/
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#include "pch.h"
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UCHAR Dot3_StartOfFrame1 = 0x55;
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UCHAR Dot3_StartOfFrame2 = 0xaa;
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UCHAR Dot3_EndOfFrame1 = 0x00;
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UCHAR Dot3_EndOfFrame2 = 0xff;
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NTSTATUS
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ParDot3Connect(
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IN PPDO_EXTENSION Pdx
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)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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ULONG ParFwdSkip = 0, ParRevSkip = 0;
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ULONG ParResetChannel = (ULONG)~0, ParResetByteCount = 4, ParResetByte = 0;
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ULONG ParSkipDefault = 0;
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ULONG ParResetChannelDefault = (ULONG)~0;
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// If an MLC device hangs we can sometimes wake it up by wacking it with
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// 4 Zeros sent to the reset channel (typically 78 or 0x4E). Make this
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// configurable via registry setting.
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ULONG ParResetByteCountDefault = 4; // from MLC spec
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ULONG ParResetByteDefault = 0; // from MLC spec
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BOOLEAN bConsiderEppDangerous = FALSE;
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DD((PCE)Pdx,DDT,"ParDot3Connect: enter\n");
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if (P12843DL_OFF == Pdx->P12843DL.DataLinkMode) {
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DD((PCE)Pdx,DDT,"ParDot3Connect: Neither Dot3 or MLC are supported - FAIL request\n");
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return STATUS_UNSUCCESSFUL;
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}
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if (Pdx->P12843DL.bEventActive) {
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DD((PCE)Pdx,DDT,"ParDot3Connect: Already connected - FAIL request\n");
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return STATUS_UNSUCCESSFUL;
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}
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// Let's get a Device Id so we can pull settings for this device
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ParTerminate(Pdx);
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{ // local block
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PCHAR buffer = NULL;
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ULONG bufferLength;
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UCHAR resultString[MAX_ID_SIZE];
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ANSI_STRING AnsiIdString;
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UNICODE_STRING UnicodeTemp;
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RTL_QUERY_REGISTRY_TABLE paramTable[6];
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UNICODE_STRING Dot3Key;
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USHORT Dot3NameSize;
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NTSTATUS status;
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RtlZeroMemory(resultString, MAX_ID_SIZE);
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// ask the device how large of a buffer is needed to hold it's raw device id
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if ( Pdx->Ieee1284Flags & ( 1 << Pdx->Ieee1284_3DeviceId ) ) {
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buffer = Par3QueryDeviceId(Pdx, NULL, 0, &bufferLength, FALSE, TRUE);
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} else{
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buffer = Par3QueryDeviceId(Pdx, NULL, 0, &bufferLength, FALSE, FALSE);
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}
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if( !buffer ) {
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DD((PCE)Pdx,DDT,"ParDot3Connect - Couldn't alloc pool for DevId - FAIL request\n");
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return STATUS_UNSUCCESSFUL;
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}
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DD((PCE)Pdx,DDT,"ParDot3Connect - 1284 ID string = <%s>\n",buffer);
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// extract the part of the ID that we want from the raw string
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// returned by the hardware
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Status = ParPnpGetId( buffer, BusQueryDeviceID, (PCHAR)resultString, NULL );
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StringSubst( (PCHAR)resultString, ' ', '_', (USHORT)strlen((const PCHAR)resultString) );
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DD((PCE)Pdx,DDT,"ParDot3Connect: resultString Post StringSubst = <%s>\n",resultString);
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// were we able to extract the info that we want from the raw ID string?
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if( !NT_SUCCESS(Status) ) {
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DD((PCE)Pdx,DDT,"ParDot3Connect - Call to ParPnpGetId Failed - FAIL request\n");
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if( buffer ) {
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ExFreePool( buffer );
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}
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return STATUS_UNSUCCESSFUL;
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}
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// Does the ID that we just retrieved from the device match the one
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// that we previously saved in the device extension?
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if(0 != strcmp( (const PCHAR)Pdx->DeviceIdString, (const PCHAR)resultString)) {
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DD((PCE)Pdx,DDT,"ParDot3Connect - strcmp shows NO MATCH\n");
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// DVDF - we may want to trigger a reenumeration since we know that the device changed
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}
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// Ok, now we have what we need to look in the registry
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// and pull some prefs.
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RtlZeroMemory(¶mTable[0], sizeof(paramTable));
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paramTable[0].Flags = RTL_QUERY_REGISTRY_DIRECT;
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paramTable[0].Name = (PWSTR)L"ParFwdSkip";
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paramTable[0].EntryContext = &ParFwdSkip;
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paramTable[0].DefaultType = REG_DWORD;
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paramTable[0].DefaultData = &ParSkipDefault;
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paramTable[0].DefaultLength = sizeof(ULONG);
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paramTable[1].Flags = RTL_QUERY_REGISTRY_DIRECT;
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paramTable[1].Name = (PWSTR)L"ParRevSkip";
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paramTable[1].EntryContext = &ParRevSkip;
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paramTable[1].DefaultType = REG_DWORD;
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paramTable[1].DefaultData = &ParSkipDefault;
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paramTable[1].DefaultLength = sizeof(ULONG);
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paramTable[2].Flags = RTL_QUERY_REGISTRY_DIRECT;
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paramTable[2].Name = (PWSTR)L"ParRC";
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paramTable[2].EntryContext = &ParResetChannel;
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paramTable[2].DefaultType = REG_DWORD;
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paramTable[2].DefaultData = &ParResetChannelDefault;
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paramTable[2].DefaultLength = sizeof(ULONG);
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paramTable[3].Flags = RTL_QUERY_REGISTRY_DIRECT;
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paramTable[3].Name = (PWSTR)L"ParRBC";
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paramTable[3].EntryContext = &ParResetByteCount;
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paramTable[3].DefaultType = REG_DWORD;
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paramTable[3].DefaultData = &ParResetByteCountDefault;
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paramTable[3].DefaultLength = sizeof(ULONG);
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paramTable[4].Flags = RTL_QUERY_REGISTRY_DIRECT;
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paramTable[4].Name = (PWSTR)L"ParRBD";
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paramTable[4].EntryContext = &ParResetByte;
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paramTable[4].DefaultType = REG_DWORD;
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paramTable[4].DefaultData = &ParResetByteDefault;
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paramTable[4].DefaultLength = sizeof(ULONG);
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Dot3Key.Buffer = NULL;
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Dot3Key.Length = 0;
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Dot3NameSize = sizeof(L"Dot3\\") + sizeof(UNICODE_NULL);
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Dot3Key.MaximumLength = (USHORT)( Dot3NameSize + (sizeof(resultString) * sizeof(WCHAR)) );
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Dot3Key.Buffer = ExAllocatePool(PagedPool,
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Dot3Key.MaximumLength);
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if( !Dot3Key.Buffer ) {
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DD((PCE)Pdx,DDT,"ParDot3Connect - ExAllocatePool for Registry Check failed - FAIL request\n");
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if( buffer ) {
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ExFreePool( buffer );
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}
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return STATUS_UNSUCCESSFUL;
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}
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DD((PCE)Pdx,DDT,"ParDot3Connect: ready to Zero buffer, &Dot3Key= %x , MaximumLength=%d\n",&Dot3Key, Dot3Key.MaximumLength);
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RtlZeroMemory(Dot3Key.Buffer, Dot3Key.MaximumLength);
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status = RtlAppendUnicodeToString(&Dot3Key, (PWSTR)L"Dot3\\");
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ASSERT( NT_SUCCESS(status) );
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DD((PCE)Pdx,DDT,"ParDot3Connect:\"UNICODE\" Dot3Key S = <%S>\n",Dot3Key.Buffer);
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DD((PCE)Pdx,DDT,"ParDot3Connect:\"UNICODE\" Dot3Key wZ = <%wZ>\n",&Dot3Key);
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DD((PCE)Pdx,DDT,"ParDot3Connect:\"RAW\" resultString string = <%s>\n",resultString);
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RtlInitAnsiString(&AnsiIdString,(const PCHAR)resultString);
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status = RtlAnsiStringToUnicodeString(&UnicodeTemp,&AnsiIdString,TRUE);
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if( NT_SUCCESS( status ) ) {
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DD((PCE)Pdx,DDT,"ParDot3Connect:\"UNICODE\" UnicodeTemp = <%S>\n",UnicodeTemp.Buffer);
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Dot3Key.Buffer[(Dot3NameSize / sizeof(WCHAR)) - 1] = UNICODE_NULL;
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DD((PCE)Pdx,DDT,"ParDot3Connect:\"UNICODE\" Dot3Key (preappend) = <%S>\n",Dot3Key.Buffer);
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status = RtlAppendUnicodeStringToString(&Dot3Key, &UnicodeTemp);
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if( NT_SUCCESS( status ) ) {
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DD((PCE)Pdx,DDT,"ParDot3Connect: ready to call RtlQuery...\n");
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Status = RtlQueryRegistryValues( RTL_REGISTRY_CONTROL, Dot3Key.Buffer, ¶mTable[0], NULL, NULL);
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DD((PCE)Pdx,DDT,"ParDot3Connect: RtlQueryRegistryValues Status = %x\n",Status);
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}
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RtlFreeUnicodeString(&UnicodeTemp);
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}
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if( Dot3Key.Buffer ) {
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ExFreePool (Dot3Key.Buffer);
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}
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// no longer needed
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ExFreePool(buffer);
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if (!NT_SUCCESS(Status)) {
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// registry read failed
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DD((PCE)Pdx,DDT,"ParDot3Connect: No Periph Defaults in Registry\n");
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DD((PCE)Pdx,DDT,"ParDot3Connect: No Periph Defaults in Registry\n");
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// registry read failed, use defaults and consider EPP to be dangerous
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ParRevSkip = ParFwdSkip = ParSkipDefault;
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bConsiderEppDangerous = TRUE;
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}
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DD((PCE)Pdx,DDT,"ParDot3Connect: pre IeeeNegotiateBestMode\n");
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// if we don't have registry overrides then use what the
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// peripheral told us otherwise stick with defaults.
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if (ParSkipDefault == ParRevSkip) {
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ParRevSkip = Pdx->P12843DL.RevSkipMask;
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} else {
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Pdx->P12843DL.RevSkipMask = (USHORT)ParRevSkip;
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}
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if (ParSkipDefault == ParFwdSkip) {
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ParFwdSkip = Pdx->P12843DL.FwdSkipMask;
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} else {
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Pdx->P12843DL.FwdSkipMask = (USHORT)ParFwdSkip;
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}
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if( bConsiderEppDangerous ) {
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ParFwdSkip |= EPP_ANY;
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ParRevSkip |= EPP_ANY;
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}
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Status = IeeeNegotiateBestMode(Pdx, (USHORT)ParRevSkip, (USHORT)ParFwdSkip);
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if( !NT_SUCCESS(Status) ) {
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DD((PCE)Pdx,DDT,"ParDot3Connect - Peripheral Negotiation Failed - FAIL dataLink connect\n");
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return Status;
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}
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Pdx->ForwardInterfaceAddress = Pdx->P12843DL.DataChannel;
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if (Pdx->P12843DL.DataLinkMode == P12843DL_MLC_DL) {
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if (ParResetChannel != ParResetChannelDefault) {
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Pdx->P12843DL.ResetByte = (UCHAR) ParResetByte & 0xff;
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Pdx->P12843DL.ResetByteCount = (UCHAR) ParResetByteCount & 0xff;
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if (ParResetChannel == PAR_COMPATIBILITY_RESET) {
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Pdx->P12843DL.fnReset = ParMLCCompatReset;
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} else {
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// Max ECP channel is 127 so let's mask off bogus bits.
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Pdx->P12843DL.ResetChannel = (UCHAR) ParResetChannel & 0x7f;
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Pdx->P12843DL.fnReset = ParMLCECPReset;
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}
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}
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}
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if (Pdx->P12843DL.fnReset) {
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DD((PCE)Pdx,DDT,"ParDot3Connect: MLCReset is supported on %x\n",Pdx->P12843DL.ResetChannel);
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Status = ((PDOT3_RESET_ROUTINE) (Pdx->P12843DL.fnReset))(Pdx);
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} else {
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DD((PCE)Pdx,DDT,"ParDot3Connect - MLCReset is not supported\n");
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Status = ParSetFwdAddress(Pdx);
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}
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if( !NT_SUCCESS(Status) ) {
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DD((PCE)Pdx,DDT,"ParDot3Connect - Couldn't Set Address - FAIL request\n");
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return Status;
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}
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// Check to make sure we are ECP, BECP, or EPP
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DD((PCE)Pdx,DDT,"ParDot3Connect: pre check of ECP, BECP, EPP\n");
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if (afpForward[Pdx->IdxForwardProtocol].ProtocolFamily != FAMILY_BECP &&
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afpForward[Pdx->IdxForwardProtocol].ProtocolFamily != FAMILY_ECP &&
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afpForward[Pdx->IdxForwardProtocol].ProtocolFamily != FAMILY_EPP) {
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DD((PCE)Pdx,DDT,"ParDot3Connect - We did not reach ECP or EPP - FAIL request\n");
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return STATUS_UNSUCCESSFUL;
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}
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} // end local block
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if (Pdx->P12843DL.DataLinkMode == P12843DL_DOT3_DL) {
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DD((PCE)Pdx,DDT,"ParDot3Connect - P12843DL_DOT3_DL\n");
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Pdx->P12843DL.fnRead = arpReverse[Pdx->IdxReverseProtocol].fnRead;
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Pdx->P12843DL.fnWrite = afpForward[Pdx->IdxForwardProtocol].fnWrite;
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Pdx->fnRead = ParDot3Read;
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Pdx->fnWrite = ParDot3Write;
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}
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DD((PCE)Pdx,DDT,"ParDot3Connect - Exit with status %x\n",Status);
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return Status;
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}
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VOID
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ParDot3CreateObject(
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IN PPDO_EXTENSION Pdx,
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IN PCHAR DOT3DL,
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IN PCHAR DOT3C
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)
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{
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Pdx->P12843DL.DataLinkMode = P12843DL_OFF;
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Pdx->P12843DL.fnReset = NULL;
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DD((PCE)Pdx,DDT,"ParDot3CreateObject - DOT3DL [%s] DOT3C\n",DOT3DL, DOT3C);
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if (DOT3DL) {
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ULONG dataChannel;
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ULONG pid = 0x285; // pid for dot4
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// Only use the first channel.
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if( !String2Num(&DOT3DL, ',', &dataChannel) ) {
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dataChannel = 77;
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DD((PCE)Pdx,DDT,"ParDot3CreateObject - No DataChannel Defined\n");
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}
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if( DOT3C ) {
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if (!String2Num(&DOT3C, ',', &pid)) {
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pid = 0x285;
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DD((PCE)Pdx,DDT,"ParDot3CreateObject - No CurrentPID Defined\n");
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}
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DD((PCE)Pdx,DDT,"ParDot3CreateObject - .3 mode is ON\n");
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}
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Pdx->P12843DL.DataChannel = (UCHAR)dataChannel;
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Pdx->P12843DL.CurrentPID = (USHORT)pid;
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|||
|
|
Pdx->P12843DL.DataLinkMode = P12843DL_DOT3_DL;
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot3CreateObject - Data [%x] CurrentPID [%x]\n",Pdx->P12843DL.DataChannel, Pdx->P12843DL.CurrentPID);
|
|||
|
|
}
|
|||
|
|
if (Pdx->P12843DL.DataLinkMode == P12843DL_OFF) {
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot3CreateObject - DANGER: .3 mode is OFF\n");
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
VOID
|
|||
|
|
ParDot4CreateObject(
|
|||
|
|
IN PPDO_EXTENSION Pdx,
|
|||
|
|
IN PCHAR DOT4DL
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
Pdx->P12843DL.DataLinkMode = P12843DL_OFF;
|
|||
|
|
Pdx->P12843DL.fnReset = NULL;
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot3CreateObject: DOT4DL [%s]\n",DOT4DL);
|
|||
|
|
if (DOT4DL) {
|
|||
|
|
UCHAR numValues = StringCountValues( (PCHAR)DOT4DL, ',' );
|
|||
|
|
ULONG dataChannel, resetChannel, ResetByteCount;
|
|||
|
|
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot3CreateObject: numValues [%d]\n",numValues);
|
|||
|
|
if (!String2Num(&DOT4DL, ',', &dataChannel)) {
|
|||
|
|
dataChannel = 77;
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot4CreateObject: No DataChannel Defined.\r\n");
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if ((String2Num(&DOT4DL, ',', &resetChannel)) && (numValues > 1)) {
|
|||
|
|
|
|||
|
|
if (resetChannel == -1) {
|
|||
|
|
Pdx->P12843DL.fnReset = ParMLCCompatReset;
|
|||
|
|
} else {
|
|||
|
|
Pdx->P12843DL.fnReset = ParMLCECPReset;
|
|||
|
|
}
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot4CreateObject: ResetChannel Defined.\r\n");
|
|||
|
|
|
|||
|
|
} else {
|
|||
|
|
Pdx->P12843DL.fnReset = NULL;
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot4CreateObject: No ResetChannel Defined.\r\n");
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if ((!String2Num(&DOT4DL, 0, &ResetByteCount)) && (numValues > 2)) {
|
|||
|
|
ResetByteCount = 4;
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot4CreateObject: No ResetByteCount Defined.\r\n");
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
Pdx->P12843DL.DataChannel = (UCHAR)dataChannel;
|
|||
|
|
Pdx->P12843DL.ResetChannel = (UCHAR)resetChannel;
|
|||
|
|
Pdx->P12843DL.ResetByteCount = (UCHAR)ResetByteCount;
|
|||
|
|
Pdx->P12843DL.DataLinkMode = P12843DL_DOT4_DL;
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot4CreateObject: .4DL mode is ON.\r\n");
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot4CreateObject: Data [%x] Reset [%x] Bytes [%x]\r\n",
|
|||
|
|
Pdx->P12843DL.DataChannel,
|
|||
|
|
Pdx->P12843DL.ResetChannel,
|
|||
|
|
Pdx->P12843DL.ResetByteCount);
|
|||
|
|
}
|
|||
|
|
#if DBG
|
|||
|
|
if (Pdx->P12843DL.DataLinkMode == P12843DL_OFF) {
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot4CreateObject: DANGER: .4DL mode is OFF.\r\n");
|
|||
|
|
}
|
|||
|
|
#endif
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
VOID
|
|||
|
|
ParMLCCreateObject(
|
|||
|
|
IN PPDO_EXTENSION Pdx,
|
|||
|
|
IN PCHAR CMDField
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
Pdx->P12843DL.DataLinkMode = P12843DL_OFF;
|
|||
|
|
Pdx->P12843DL.fnReset = NULL;
|
|||
|
|
if (CMDField)
|
|||
|
|
{
|
|||
|
|
Pdx->P12843DL.DataChannel = 77;
|
|||
|
|
|
|||
|
|
Pdx->P12843DL.DataLinkMode = P12843DL_MLC_DL;
|
|||
|
|
DD((PCE)Pdx,DDT,"ParMLCCreateObject: MLC mode is on.\r\n");
|
|||
|
|
}
|
|||
|
|
#if DBG
|
|||
|
|
if (Pdx->P12843DL.DataLinkMode == P12843DL_OFF)
|
|||
|
|
{
|
|||
|
|
DD((PCE)Pdx,DDT,"ParMLCCreateObject: DANGER: MLC mode is OFF.\r\n");
|
|||
|
|
}
|
|||
|
|
#endif
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
VOID
|
|||
|
|
ParDot3DestroyObject(
|
|||
|
|
IN PPDO_EXTENSION Pdx
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
Pdx->P12843DL.DataLinkMode = P12843DL_OFF;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
NTSTATUS
|
|||
|
|
ParDot3Disconnect(
|
|||
|
|
IN PPDO_EXTENSION Pdx
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
if (Pdx->P12843DL.DataLinkMode == P12843DL_DOT3_DL) {
|
|||
|
|
Pdx->fnRead = arpReverse[Pdx->IdxReverseProtocol].fnRead;
|
|||
|
|
Pdx->fnWrite = afpForward[Pdx->IdxForwardProtocol].fnWrite;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
Pdx->P12843DL.bEventActive = FALSE;
|
|||
|
|
Pdx->P12843DL.Event = 0;
|
|||
|
|
|
|||
|
|
return STATUS_SUCCESS;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
VOID
|
|||
|
|
ParDot3ParseModes(
|
|||
|
|
IN PPDO_EXTENSION Pdx,
|
|||
|
|
IN PCHAR DOT3M
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
ULONG fwd = 0;
|
|||
|
|
ULONG rev = 0;
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot3ParseModes: DOT3M [%s]\n",DOT3M);
|
|||
|
|
if (DOT3M) {
|
|||
|
|
UCHAR numValues = StringCountValues((PCHAR)DOT3M, ',');
|
|||
|
|
|
|||
|
|
if (numValues != 2) {
|
|||
|
|
// The periph gave me bad values. I'm not gonna read
|
|||
|
|
// them. I will set the defaults to the lowest
|
|||
|
|
// common denominator.
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot3ParseModes: Malformed 1284.3M field.\r\n");
|
|||
|
|
Pdx->P12843DL.FwdSkipMask = (USHORT) PAR_FWD_MODE_SKIP_MASK;
|
|||
|
|
Pdx->P12843DL.RevSkipMask = (USHORT) PAR_REV_MODE_SKIP_MASK;
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Only use the first channel.
|
|||
|
|
if (!String2Num(&DOT3M, ',', &fwd)) {
|
|||
|
|
fwd = (USHORT) PAR_FWD_MODE_SKIP_MASK;
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot3ParseModes: Couldn't read fwd of 1284.3M.\r\n");
|
|||
|
|
}
|
|||
|
|
if (!String2Num(&DOT3M, ',', &rev)) {
|
|||
|
|
rev = (USHORT) PAR_REV_MODE_SKIP_MASK;
|
|||
|
|
DD((PCE)Pdx,DDT,"ParDot3ParseModes: Couldn't read rev of 1284.3M.\r\n");
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
Pdx->P12843DL.FwdSkipMask = (USHORT) fwd;
|
|||
|
|
Pdx->P12843DL.RevSkipMask = (USHORT) rev;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
NTSTATUS
|
|||
|
|
ParDot3Read(
|
|||
|
|
IN PPDO_EXTENSION Pdx,
|
|||
|
|
IN PVOID Buffer,
|
|||
|
|
IN ULONG BufferSize,
|
|||
|
|
OUT PULONG BytesTransferred
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
NTSTATUS Status;
|
|||
|
|
UCHAR ucScrap1;
|
|||
|
|
UCHAR ucScrap2[2];
|
|||
|
|
USHORT usScrap1;
|
|||
|
|
ULONG bytesToRead;
|
|||
|
|
ULONG bytesTransferred;
|
|||
|
|
USHORT Dot3CheckSum;
|
|||
|
|
USHORT Dot3DataLen;
|
|||
|
|
|
|||
|
|
// ================================== Read the first byte of SOF
|
|||
|
|
bytesToRead = 1;
|
|||
|
|
bytesTransferred = 0;
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
Status = ((PPROTOCOL_READ_ROUTINE) Pdx->P12843DL.fnRead)(Pdx, &ucScrap1, bytesToRead, &bytesTransferred);
|
|||
|
|
}
|
|||
|
|
while(NT_SUCCESS(Status) && bytesTransferred != bytesToRead);
|
|||
|
|
|
|||
|
|
// ================================== Check the first byte of SOF
|
|||
|
|
if (!NT_SUCCESS(Status) || ucScrap1 != Dot3_StartOfFrame1)
|
|||
|
|
{
|
|||
|
|
DD((PCE)Pdx,DDE,"ParDot3Read: Header Read Failed. We're Hosed!\n");
|
|||
|
|
*BytesTransferred = 0;
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ================================== Read the second byte of SOF
|
|||
|
|
bytesToRead = 1;
|
|||
|
|
bytesTransferred = 0;
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
Status = ((PPROTOCOL_READ_ROUTINE) Pdx->P12843DL.fnRead)(Pdx, &ucScrap1, bytesToRead, &bytesTransferred);
|
|||
|
|
}
|
|||
|
|
while(NT_SUCCESS(Status) && bytesTransferred != bytesToRead);
|
|||
|
|
|
|||
|
|
// ================================== Check the second byte of SOF
|
|||
|
|
if (!NT_SUCCESS(Status) || ucScrap1 != Dot3_StartOfFrame2)
|
|||
|
|
{
|
|||
|
|
DD((PCE)Pdx,DDE,"ParDot3Read: Header Read Failed. We're Hosed!\n");
|
|||
|
|
*BytesTransferred = 0;
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ================================== Read the PID (Should be in Big Endian)
|
|||
|
|
bytesToRead = 2;
|
|||
|
|
bytesTransferred = 0;
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
Status = ((PPROTOCOL_READ_ROUTINE) Pdx->P12843DL.fnRead)(Pdx, &usScrap1, bytesToRead, &bytesTransferred);
|
|||
|
|
}
|
|||
|
|
while(NT_SUCCESS(Status) && bytesTransferred != bytesToRead);
|
|||
|
|
|
|||
|
|
// ================================== Check the PID
|
|||
|
|
if (!NT_SUCCESS(Status) || usScrap1 != Pdx->P12843DL.CurrentPID)
|
|||
|
|
{
|
|||
|
|
DD((PCE)Pdx,DDE,"ParDot3Read: Header Read Failed. We're Hosed!\n");
|
|||
|
|
*BytesTransferred = 0;
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ================================== Read the DataLen
|
|||
|
|
bytesToRead = 2;
|
|||
|
|
bytesTransferred = 0;
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
Status = ((PPROTOCOL_READ_ROUTINE) Pdx->P12843DL.fnRead)(Pdx, &ucScrap2[0], bytesToRead, &bytesTransferred);
|
|||
|
|
}
|
|||
|
|
while(NT_SUCCESS(Status) && bytesTransferred != bytesToRead);
|
|||
|
|
|
|||
|
|
Dot3DataLen = (USHORT)((USHORT)(ucScrap2[0]<<8 | ucScrap2[1]));
|
|||
|
|
// ================================== Check the DataLen
|
|||
|
|
if (!NT_SUCCESS(Status))
|
|||
|
|
{
|
|||
|
|
DD((PCE)Pdx,DDE,"ParDot3Read: Header Read Failed. We're Hosed!\n");
|
|||
|
|
*BytesTransferred = 0;
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ================================== Read the Checksum
|
|||
|
|
bytesToRead = 2;
|
|||
|
|
bytesTransferred = 0;
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
Status = ((PPROTOCOL_READ_ROUTINE) Pdx->P12843DL.fnRead)(Pdx, &ucScrap2[0], bytesToRead, &bytesTransferred);
|
|||
|
|
}
|
|||
|
|
while(NT_SUCCESS(Status) && bytesTransferred != bytesToRead);
|
|||
|
|
|
|||
|
|
Dot3CheckSum = (USHORT)(ucScrap2[0]<<8 | ucScrap2[1]);
|
|||
|
|
// ================================== Check the DataLen
|
|||
|
|
if (!NT_SUCCESS(Status))
|
|||
|
|
{
|
|||
|
|
DD((PCE)Pdx,DDE,"ParDot3Read: Header Read Failed. We're Hosed!\n");
|
|||
|
|
*BytesTransferred = 0;
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
Status = ((PPROTOCOL_READ_ROUTINE) Pdx->P12843DL.fnRead)(Pdx, Buffer, BufferSize, BytesTransferred);
|
|||
|
|
|
|||
|
|
if (!NT_SUCCESS(Status))
|
|||
|
|
{
|
|||
|
|
DD((PCE)Pdx,DDE,"ParDot3Read: Data Read Failed. We're Hosed!\n");
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// LengthOfData field from the Frame header is really the number of bytes of ClientData - 1
|
|||
|
|
if ( ((ULONG)Dot3DataLen + 1) > BufferSize)
|
|||
|
|
{
|
|||
|
|
// buffer overflow - abort operation
|
|||
|
|
DD((PCE)Pdx,DDE,"ParDot3Read: Bad 1284.3DL Data Len. Buffer overflow. We're Hosed!\n");
|
|||
|
|
return STATUS_BUFFER_OVERFLOW;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Check Checksum
|
|||
|
|
{
|
|||
|
|
USHORT pid = Pdx->P12843DL.CurrentPID;
|
|||
|
|
USHORT checkSum;
|
|||
|
|
|
|||
|
|
// 2's complement sum in 32 bit accumulator
|
|||
|
|
ULONG sum = pid + Dot3DataLen + Dot3CheckSum;
|
|||
|
|
|
|||
|
|
// fold 32 bit sum into 16 bits
|
|||
|
|
while( sum >> 16 ) {
|
|||
|
|
sum = (sum & 0xffff) + (sum >> 16);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// take 1's complement of folded sum - this should be Zero if there were no errors
|
|||
|
|
checkSum = (USHORT)(0xffff & ~sum);
|
|||
|
|
|
|||
|
|
if( checkSum != 0 ) {
|
|||
|
|
DD((PCE)Pdx,DDE,"ParDot3Read: Bad 1284.3DL Checksum. We're Hosed!\n");
|
|||
|
|
return STATUS_DEVICE_PROTOCOL_ERROR;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
// ================================== Read the first byte of EOF
|
|||
|
|
bytesToRead = 1;
|
|||
|
|
bytesTransferred = 0;
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
Status = ((PPROTOCOL_READ_ROUTINE) Pdx->P12843DL.fnRead)(Pdx, &ucScrap1, bytesToRead, &bytesTransferred);
|
|||
|
|
}
|
|||
|
|
while(NT_SUCCESS(Status) && bytesTransferred != bytesToRead);
|
|||
|
|
|
|||
|
|
// ================================== Check the first byte of EOF
|
|||
|
|
if (!NT_SUCCESS(Status) || ucScrap1 != Dot3_EndOfFrame1)
|
|||
|
|
{
|
|||
|
|
DD((PCE)Pdx,DDE,"ParDot3Read: Header Read Failed. We're Hosed!\n");
|
|||
|
|
*BytesTransferred = 0;
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ================================== Read the second byte of EOF
|
|||
|
|
bytesToRead = 1;
|
|||
|
|
bytesTransferred = 0;
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
Status = ((PPROTOCOL_READ_ROUTINE) Pdx->P12843DL.fnRead)(Pdx, &ucScrap1, bytesToRead, &bytesTransferred);
|
|||
|
|
}
|
|||
|
|
while(NT_SUCCESS(Status) && bytesTransferred != bytesToRead);
|
|||
|
|
|
|||
|
|
// ================================== Check the second byte of EOF
|
|||
|
|
if (!NT_SUCCESS(Status) || ucScrap1 != Dot3_EndOfFrame2)
|
|||
|
|
{
|
|||
|
|
DD((PCE)Pdx,DDE,"ParDot3Read: Header Read Failed. We're Hosed!\n");
|
|||
|
|
*BytesTransferred = 0;
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
return Status;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
NTSTATUS
|
|||
|
|
ParDot3Write(
|
|||
|
|
IN PPDO_EXTENSION Pdx,
|
|||
|
|
IN PVOID Buffer,
|
|||
|
|
IN ULONG BufferSize,
|
|||
|
|
OUT PULONG BytesTransferred
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
NTSTATUS Status;
|
|||
|
|
ULONG frameBytesTransferred;
|
|||
|
|
ULONG bytesToWrite;
|
|||
|
|
USHORT scrap1;
|
|||
|
|
USHORT scrap2;
|
|||
|
|
USHORT scrapHigh;
|
|||
|
|
USHORT scrapLow;
|
|||
|
|
PUCHAR p;
|
|||
|
|
|
|||
|
|
// valid range for data payload per Frame is 1..64K
|
|||
|
|
if( (BufferSize < 1) || (BufferSize > 64*1024) ) {
|
|||
|
|
return STATUS_INVALID_PARAMETER;
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
// ========================= Write out first Byte of SOF
|
|||
|
|
bytesToWrite = 1;
|
|||
|
|
frameBytesTransferred = 0;
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
Status = ((PPROTOCOL_WRITE_ROUTINE) Pdx->P12843DL.fnWrite)(Pdx, &Dot3_StartOfFrame1, bytesToWrite, &frameBytesTransferred);
|
|||
|
|
}
|
|||
|
|
while(NT_SUCCESS(Status) && frameBytesTransferred != bytesToWrite);
|
|||
|
|
|
|||
|
|
// ========================= Check first Byte of SOF
|
|||
|
|
if (!NT_SUCCESS(Status))
|
|||
|
|
{
|
|||
|
|
*BytesTransferred = 0;
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ========================= Write out second Byte of SOF
|
|||
|
|
bytesToWrite = 1;
|
|||
|
|
frameBytesTransferred = 0;
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
Status = ((PPROTOCOL_WRITE_ROUTINE) Pdx->P12843DL.fnWrite)(Pdx, &Dot3_StartOfFrame2, bytesToWrite, &frameBytesTransferred);
|
|||
|
|
}
|
|||
|
|
while(NT_SUCCESS(Status) && frameBytesTransferred != bytesToWrite);
|
|||
|
|
|
|||
|
|
// ========================= Check second Byte of SOF
|
|||
|
|
if (!NT_SUCCESS(Status))
|
|||
|
|
{
|
|||
|
|
*BytesTransferred = 0;
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ========================= Write out PID (which should be in Big Endian already)
|
|||
|
|
bytesToWrite = 2;
|
|||
|
|
frameBytesTransferred = 0;
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
Status = ((PPROTOCOL_WRITE_ROUTINE) Pdx->P12843DL.fnWrite)(Pdx, &Pdx->P12843DL.CurrentPID, bytesToWrite, &frameBytesTransferred);
|
|||
|
|
}
|
|||
|
|
while(NT_SUCCESS(Status) && frameBytesTransferred != bytesToWrite);
|
|||
|
|
|
|||
|
|
// ========================= Check PID
|
|||
|
|
if (!NT_SUCCESS(Status))
|
|||
|
|
{
|
|||
|
|
*BytesTransferred = 0;
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ========================= Write out Length of Data
|
|||
|
|
bytesToWrite = 2;
|
|||
|
|
frameBytesTransferred = 0;
|
|||
|
|
scrap1 = (USHORT) (BufferSize - 1);
|
|||
|
|
scrapLow = (UCHAR) (scrap1 & 0xff);
|
|||
|
|
scrapHigh = (UCHAR) (scrap1 >> 8);
|
|||
|
|
p = (PUCHAR)&scrap2;
|
|||
|
|
*p++ = (UCHAR)scrapHigh;
|
|||
|
|
*p = (UCHAR)scrapLow;
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
Status = ((PPROTOCOL_WRITE_ROUTINE) Pdx->P12843DL.fnWrite)(Pdx, &scrap2, bytesToWrite, &frameBytesTransferred);
|
|||
|
|
}
|
|||
|
|
while(NT_SUCCESS(Status) && frameBytesTransferred != bytesToWrite);
|
|||
|
|
|
|||
|
|
// ========================= Check Length of Data
|
|||
|
|
if (!NT_SUCCESS(Status))
|
|||
|
|
{
|
|||
|
|
*BytesTransferred = 0;
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ========================= Write out Checksum
|
|||
|
|
bytesToWrite = 2;
|
|||
|
|
frameBytesTransferred = 0;
|
|||
|
|
|
|||
|
|
{
|
|||
|
|
USHORT pid = Pdx->P12843DL.CurrentPID;
|
|||
|
|
USHORT dataLengthMinusOne = (USHORT)(BufferSize - 1);
|
|||
|
|
USHORT checkSum;
|
|||
|
|
|
|||
|
|
// 2's complement sum in 32 bit accumulator
|
|||
|
|
ULONG sum = pid + dataLengthMinusOne;
|
|||
|
|
|
|||
|
|
// fold 32 bit sum into 16 bits
|
|||
|
|
while( sum >> 16 ) {
|
|||
|
|
sum = (sum & 0xffff) + (sum >> 16);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// final checksum is 1's complement of folded sum
|
|||
|
|
checkSum = (USHORT)(0xffff & ~sum);
|
|||
|
|
scrap1 = checkSum;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// send checksum big-endian
|
|||
|
|
scrapLow = (UCHAR)(scrap1 & 0xff);
|
|||
|
|
scrapHigh = (UCHAR)(scrap1 >> 8);
|
|||
|
|
p = (PUCHAR)&scrap2;
|
|||
|
|
*p++ = (UCHAR)scrapHigh;
|
|||
|
|
*p = (UCHAR)scrapLow;
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
Status = ((PPROTOCOL_WRITE_ROUTINE) Pdx->P12843DL.fnWrite)(Pdx, &scrap2, bytesToWrite, &frameBytesTransferred);
|
|||
|
|
}
|
|||
|
|
while(NT_SUCCESS(Status) && frameBytesTransferred != bytesToWrite);
|
|||
|
|
|
|||
|
|
// ========================= Check Checksum
|
|||
|
|
if (!NT_SUCCESS(Status))
|
|||
|
|
{
|
|||
|
|
*BytesTransferred = 0;
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
Status = ((PPROTOCOL_WRITE_ROUTINE) Pdx->P12843DL.fnWrite)(Pdx, Buffer, BufferSize, BytesTransferred);
|
|||
|
|
if (NT_SUCCESS(Status))
|
|||
|
|
{
|
|||
|
|
// ========================= Write out first Byte of EOF
|
|||
|
|
bytesToWrite = 1;
|
|||
|
|
frameBytesTransferred = 0;
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
Status = ((PPROTOCOL_WRITE_ROUTINE) Pdx->P12843DL.fnWrite)(Pdx, &Dot3_EndOfFrame1, bytesToWrite, &frameBytesTransferred);
|
|||
|
|
}
|
|||
|
|
while(NT_SUCCESS(Status) && frameBytesTransferred != bytesToWrite);
|
|||
|
|
|
|||
|
|
// ========================= Check first Byte of EOF
|
|||
|
|
if (!NT_SUCCESS(Status))
|
|||
|
|
{
|
|||
|
|
*BytesTransferred = 0;
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ========================= Write out second Byte of EOF
|
|||
|
|
bytesToWrite = 1;
|
|||
|
|
frameBytesTransferred = 0;
|
|||
|
|
do
|
|||
|
|
{
|
|||
|
|
Status = ((PPROTOCOL_WRITE_ROUTINE) Pdx->P12843DL.fnWrite)(Pdx, &Dot3_EndOfFrame2, bytesToWrite, &frameBytesTransferred);
|
|||
|
|
}
|
|||
|
|
while(NT_SUCCESS(Status) && frameBytesTransferred != bytesToWrite);
|
|||
|
|
|
|||
|
|
// ========================= Check second Byte of EOF
|
|||
|
|
if (!NT_SUCCESS(Status))
|
|||
|
|
{
|
|||
|
|
*BytesTransferred = 0;
|
|||
|
|
return(Status);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return Status;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
NTSTATUS
|
|||
|
|
ParMLCCompatReset(
|
|||
|
|
IN PPDO_EXTENSION Pdx
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
NTSTATUS Status = STATUS_SUCCESS;
|
|||
|
|
UCHAR Reset[256]; // Reset should not require more than 256 chars
|
|||
|
|
const ULONG ResetLen = Pdx->P12843DL.ResetByteCount;
|
|||
|
|
ULONG BytesWritten;
|
|||
|
|
|
|||
|
|
DD((PCE)Pdx,DDT,"ParMLCCompatReset: Start\n");
|
|||
|
|
if (Pdx->P12843DL.DataLinkMode != P12843DL_MLC_DL &&
|
|||
|
|
Pdx->P12843DL.DataLinkMode != P12843DL_DOT4_DL)
|
|||
|
|
{
|
|||
|
|
DD((PCE)Pdx,DDT,"ParMLCCompatReset: not MLC.\n");
|
|||
|
|
return STATUS_SUCCESS;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
ParTerminate(Pdx);
|
|||
|
|
// Sending NULLs for reset
|
|||
|
|
DD((PCE)Pdx,DDT,"ParMLCCompatReset: Zeroing Reset Bytes.\n");
|
|||
|
|
RtlFillMemory(Reset, ResetLen, Pdx->P12843DL.ResetByte);
|
|||
|
|
|
|||
|
|
DD((PCE)Pdx,DDT,"ParMLCCompatReset: Sending Reset Bytes.\n");
|
|||
|
|
// Don't use the Dot3Write since we are in MLC Mode.
|
|||
|
|
Status = SppWrite(Pdx, Reset, ResetLen, &BytesWritten);
|
|||
|
|
if (!NT_SUCCESS(Status) || BytesWritten != ResetLen)
|
|||
|
|
{
|
|||
|
|
DD((PCE)Pdx,DDE,"ParMLCCompatReset: FAIL. Write Failed\n");
|
|||
|
|
return Status;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
DD((PCE)Pdx,DDT,"ParMLCCompatReset: Reset Bytes were sent.\n");
|
|||
|
|
return Status;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
NTSTATUS
|
|||
|
|
ParMLCECPReset(
|
|||
|
|
IN PPDO_EXTENSION Pdx
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
NTSTATUS Status = STATUS_SUCCESS;
|
|||
|
|
UCHAR Reset[256]; // Reset should not require more than 256 chars
|
|||
|
|
const ULONG ResetLen = Pdx->P12843DL.ResetByteCount;
|
|||
|
|
ULONG BytesWritten;
|
|||
|
|
|
|||
|
|
DD((PCE)Pdx,DDT,"ParMLCECPReset: Start\n");
|
|||
|
|
if (Pdx->P12843DL.DataLinkMode != P12843DL_MLC_DL &&
|
|||
|
|
Pdx->P12843DL.DataLinkMode != P12843DL_DOT4_DL)
|
|||
|
|
{
|
|||
|
|
DD((PCE)Pdx,DDT,"ParMLCECPReset: not MLC.\n");
|
|||
|
|
return STATUS_SUCCESS;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
Status = ParReverseToForward(Pdx);
|
|||
|
|
Pdx->ForwardInterfaceAddress = Pdx->P12843DL.ResetChannel;
|
|||
|
|
Status = ParSetFwdAddress(Pdx);
|
|||
|
|
if (!NT_SUCCESS(Status)) {
|
|||
|
|
DD((PCE)Pdx,DDE,"ParMLCECPReset: FAIL. Couldn't Set Reset Channel\n");
|
|||
|
|
return Status;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Sending NULLs for reset
|
|||
|
|
DD((PCE)Pdx,DDT,"ParMLCECPReset: Zeroing Reset Bytes.\n");
|
|||
|
|
RtlFillMemory(Reset, ResetLen, Pdx->P12843DL.ResetByte);
|
|||
|
|
DD((PCE)Pdx,DDT,"ParMLCECPReset: Sending Reset Bytes.\n");
|
|||
|
|
// Don't use the Dot3Write since we are in MLC Mode.
|
|||
|
|
Status = afpForward[Pdx->IdxForwardProtocol].fnWrite(Pdx, Reset, ResetLen, &BytesWritten);
|
|||
|
|
if (!NT_SUCCESS(Status) || BytesWritten != ResetLen) {
|
|||
|
|
DD((PCE)Pdx,DDE,"ParMLCECPReset: FAIL. Write Failed\n");
|
|||
|
|
return Status;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
DD((PCE)Pdx,DDT,"ParMLCECPReset: Reset Bytes were sent.\n");
|
|||
|
|
Pdx->ForwardInterfaceAddress = Pdx->P12843DL.DataChannel;
|
|||
|
|
Status = ParSetFwdAddress(Pdx);
|
|||
|
|
if (!NT_SUCCESS(Status)) {
|
|||
|
|
DD((PCE)Pdx,DDE,"ParMLCECPReset: FAIL. Couldn't Set Data Channel\n");
|
|||
|
|
return Status;
|
|||
|
|
}
|
|||
|
|
return Status;
|
|||
|
|
}
|