windows-nt/Source/XPSP1/NT/drivers/parallel/parclass/p12843dl.c

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2020-09-26 03:20:57 -05:00
/*++
Copyright (C) Microsoft Corporation, 1993 - 1999
Module Name:
p12843dl.c
Abstract:
This module contains utility code used by 1284.3 Data Link.
Author:
Robbie Harris (Hewlett-Packard) 10-September-1998
Environment:
Kernel mode
Revision History :
--*/
#include "pch.h"
#include "readwrit.h"
#if PAR_TEST_HARNESS
#include "parharns.h"
#endif
UCHAR Dot3_StartOfFrame1 = 0x55;
UCHAR Dot3_StartOfFrame2 = 0xaa;
UCHAR Dot3_EndOfFrame1 = 0x00;
UCHAR Dot3_EndOfFrame2 = 0xff;
NTSTATUS
ParDot3Connect(
IN PDEVICE_EXTENSION Extension
)
{
NTSTATUS Status = STATUS_SUCCESS;
ULONG ParFwdSkip, ParRevSkip;
ULONG ParResetChannel, ParResetByteCount, ParResetByte;
ULONG ParSkipDefault = 0;
ULONG ParResetChannelDefault = -1;
// If an MLC device hangs we can sometimes wake it up by wacking it with
// 4 Zeros sent to the reset channel (typically 78 or 0x4E). Make this
// configurable via registry setting.
ULONG ParResetByteCountDefault = 4; // from MLC spec
ULONG ParResetByteDefault = 0; // from MLC spec
BOOLEAN bPrefs = FALSE; // used to determine if we were able
// to get some preferred modes to
// work with.
BOOLEAN bConsiderEppDangerous = FALSE;
if (P12843DL_OFF == Extension->P12843DL.DataLinkMode)
{
ParDump2(PARINFO, ("ParDot3Connect: Neither Dot3 or MLC are supported.\r\n"));
return STATUS_UNSUCCESSFUL;
}
if (Extension->P12843DL.bEventActive)
{
ParDump2(PARINFO, ("ParDot3Connect: Already connected.\r\n"));
return STATUS_UNSUCCESSFUL;
}
// Let's get a Device Id so we can pull settings
// for this device
ParTerminate(Extension);
{
PCHAR buffer = NULL;
ULONG bufferLength;
// ULONG bytesRead;
UCHAR resultString[MAX_ID_SIZE];
ANSI_STRING AnsiIdString;
UNICODE_STRING UnicodeTemp;
RTL_QUERY_REGISTRY_TABLE paramTable[6];
UNICODE_STRING Dot3Key;
USHORT Dot3NameSize;
NTSTATUS status;
// BOOLEAN boolResult;
RtlZeroMemory(resultString, MAX_ID_SIZE);
// ask the device how large of a buffer is needed to hold it's raw device id
if ( Extension->Ieee1284Flags & ( 1 << Extension->Ieee1284_3DeviceId ) ) {
buffer = Par3QueryDeviceId(Extension, NULL, 0, &bufferLength, FALSE, TRUE);
}
else{
buffer = Par3QueryDeviceId(Extension, NULL, 0, &bufferLength, FALSE, FALSE);
}
if( !buffer ) {
ParDump2(PARERRORS, ("ParDot3Connect: FAIL. Couldn't alloc pool for DevId\n") );
return STATUS_UNSUCCESSFUL;
}
ParDump2(PARDOT3DL, ("ParDot3Connect:\"RAW\" ID string = <%s>\n", buffer) );
// extract the part of the ID that we want from the raw string
// returned by the hardware
Status = ParPnpGetId( (PUCHAR)buffer, BusQueryDeviceID, resultString, NULL );
StringSubst ((PUCHAR) resultString, ' ', '_', (USHORT)strlen(resultString));
ParDump2(PARDOT3DL, ("ParDot3Connect: resultString Post StringSubst = <%s>\n", resultString) );
// were we able to extract the info that we want from the raw ID string?
if( !NT_SUCCESS(Status) ) {
ParDump2(PARERRORS, ("ParDot3Connect: FAIL. Call to ParPnpGetId Failed\n") );
return STATUS_UNSUCCESSFUL;
}
// Does the ID that we just retrieved from the device match the one
// that we previously saved in the device extension?
if(0 != strcmp( (const PCHAR)Extension->DeviceIdString, (const PCHAR)resultString)) {
ParDump2(PARDOT3DL, ("ParDot3Connect: strcmp shows NO MATCH\n") );
// DVDF - we may want to trigger a reenumeration since we know that the device changed
}
// Ok, now we have what we need to look in the registry
// and pull some prefs.
RtlZeroMemory(&paramTable[0], sizeof(paramTable));
paramTable[0].Flags = RTL_QUERY_REGISTRY_DIRECT;
paramTable[0].Name = (PWSTR)L"ParFwdSkip";
paramTable[0].EntryContext = &ParFwdSkip;
paramTable[0].DefaultType = REG_DWORD;
paramTable[0].DefaultData = &ParSkipDefault;
paramTable[0].DefaultLength = sizeof(ULONG);
paramTable[1].Flags = RTL_QUERY_REGISTRY_DIRECT;
paramTable[1].Name = (PWSTR)L"ParRevSkip";
paramTable[1].EntryContext = &ParRevSkip;
paramTable[1].DefaultType = REG_DWORD;
paramTable[1].DefaultData = &ParSkipDefault;
paramTable[1].DefaultLength = sizeof(ULONG);
paramTable[2].Flags = RTL_QUERY_REGISTRY_DIRECT;
paramTable[2].Name = (PWSTR)L"ParRC";
paramTable[2].EntryContext = &ParResetChannel;
paramTable[2].DefaultType = REG_DWORD;
paramTable[2].DefaultData = &ParResetChannelDefault;
paramTable[2].DefaultLength = sizeof(ULONG);
paramTable[3].Flags = RTL_QUERY_REGISTRY_DIRECT;
paramTable[3].Name = (PWSTR)L"ParRBC";
paramTable[3].EntryContext = &ParResetByteCount;
paramTable[3].DefaultType = REG_DWORD;
paramTable[3].DefaultData = &ParResetByteCountDefault;
paramTable[3].DefaultLength = sizeof(ULONG);
paramTable[4].Flags = RTL_QUERY_REGISTRY_DIRECT;
paramTable[4].Name = (PWSTR)L"ParRBD";
paramTable[4].EntryContext = &ParResetByte;
paramTable[4].DefaultType = REG_DWORD;
paramTable[4].DefaultData = &ParResetByteDefault;
paramTable[4].DefaultLength = sizeof(ULONG);
Dot3Key.Buffer = NULL;
Dot3Key.Length = 0;
Dot3NameSize = sizeof(L"Dot3\\") + sizeof(UNICODE_NULL);
Dot3Key.MaximumLength = (USHORT)( Dot3NameSize + (sizeof(resultString) * sizeof(WCHAR)) );
Dot3Key.Buffer = ExAllocatePool(PagedPool,
Dot3Key.MaximumLength);
if (!Dot3Key.Buffer)
{
ParDump2(PARERRORS, ("ParDot3Connect: FAIL. ExAllocatePool for Registry Check.\n") );
return STATUS_UNSUCCESSFUL;
}
ParDump2(PARDOT3DL, ("ParDot3Connect: ready to Zero buffer, &Dot3Key= %x , MaximumLength=%d\n",
&Dot3Key, Dot3Key.MaximumLength));
RtlZeroMemory(Dot3Key.Buffer, Dot3Key.MaximumLength);
status = RtlAppendUnicodeToString(&Dot3Key, (PWSTR)L"Dot3\\");
ASSERT( NT_SUCCESS(status) );
ParDump2(PARDOT3DL, ("ParDot3Connect:\"UNICODE\" Dot3Key S = <%S>\n", Dot3Key.Buffer) );
ParDump2(PARDOT3DL, ("ParDot3Connect:\"UNICODE\" Dot3Key wZ = <%wZ>\n", &Dot3Key) );
ParDump2(PARDOT3DL, ("ParDot3Connect:\"RAW\" resultString string = <%s>\n", resultString) );
RtlInitAnsiString(&AnsiIdString,resultString);
status = RtlAnsiStringToUnicodeString(&UnicodeTemp,&AnsiIdString,TRUE);
if( NT_SUCCESS( status ) ) {
ParDump2(PARDOT3DL, ("ParDot3Connect:\"UNICODE\" UnicodeTemp = <%S>\n", UnicodeTemp.Buffer) );
Dot3Key.Buffer[(Dot3NameSize / sizeof(WCHAR)) - 1] = UNICODE_NULL;
ParDump2(PARDOT3DL, ("ParDot3Connect:\"UNICODE\" Dot3Key (preappend) = <%S>\n", Dot3Key.Buffer) );
status = RtlAppendUnicodeStringToString(&Dot3Key, &UnicodeTemp);
if( NT_SUCCESS( status ) ) {
ParDump2(PARDOT3DL, ("ParDot3Connect: ready to call RtlQuery...\n") );
Status = RtlQueryRegistryValues( RTL_REGISTRY_CONTROL, Dot3Key.Buffer, &paramTable[0], NULL, NULL);
ParDump2(PARINFO, ("ParDot3Connect: RtlQueryRegistryValues Status = %x\n", Status));
}
RtlFreeUnicodeString(&UnicodeTemp);
}
if (Dot3Key.Buffer)
ExFreePool (Dot3Key.Buffer);
// no longer needed
ExFreePool(buffer);
if (!NT_SUCCESS(Status)) {
// registry read failed
ParDump2(PARINFO, ("ParDot3Connect: No Periph Defaults in Registry\n") );
ParDump2(PARDOT3DL, ("ParDot3Connect: No Periph Defaults in Registry\n") );
// registry read failed, use defaults and consider EPP to be dangerous
ParRevSkip = ParFwdSkip = ParSkipDefault;
bConsiderEppDangerous = TRUE;
}
ParDump2(PARDOT3DL, ("ParDot3Connect: pre IeeeNegotiateBestMode\n") );
// if we don't have registry overrides then use what the
// peripheral told us otherwise stick with defaults.
if (ParSkipDefault == ParRevSkip)
ParRevSkip = Extension->P12843DL.RevSkipMask;
else
Extension->P12843DL.RevSkipMask = (USHORT) ParRevSkip;
if (ParSkipDefault == ParFwdSkip)
ParFwdSkip = Extension->P12843DL.FwdSkipMask;
else
Extension->P12843DL.FwdSkipMask = (USHORT) ParFwdSkip;
if( bConsiderEppDangerous ) {
ParFwdSkip |= EPP_ANY;
ParRevSkip |= EPP_ANY;
}
Status = IeeeNegotiateBestMode(Extension, (USHORT)ParRevSkip, (USHORT)ParFwdSkip);
if( !NT_SUCCESS(Status) ) {
ParDump2(PARERRORS, ("ParDot3Connect: FAIL. Peripheral Negotiation Failed\n") );
return Status;
}
Extension->ForwardInterfaceAddress = Extension->P12843DL.DataChannel;
if (Extension->P12843DL.DataLinkMode == P12843DL_MLC_DL)
{
if (ParResetChannel != ParResetChannelDefault)
{
Extension->P12843DL.ResetByte = (UCHAR) ParResetByte & 0xff;
Extension->P12843DL.ResetByteCount = (UCHAR) ParResetByteCount & 0xff;
if (ParResetChannel == PAR_COMPATIBILITY_RESET)
Extension->P12843DL.fnReset = ParMLCCompatReset;
else
{
// Max ECP channel is 127 so let's mask off bogus bits.
Extension->P12843DL.ResetChannel = (UCHAR) ParResetChannel & 0x7f;
Extension->P12843DL.fnReset = ParMLCECPReset;
}
}
}
if (Extension->P12843DL.fnReset)
{
ParDump2(PARDOT3DL, ("ParDot3Connect: MLCReset is supported on %x\n", Extension->P12843DL.ResetChannel) );
Status = ((PDOT3_RESET_ROUTINE) (Extension->P12843DL.fnReset))(Extension);
}
else
{
ParDump2(PARDOT3DL, ("ParDot3Connect: MLCReset is not supported\n") );
Status = ParSetFwdAddress(Extension);
}
if( !NT_SUCCESS(Status) ) {
ParDump2(PARERRORS, ("ParDot3Connect: FAIL. Couldn't Set Address\n") );
return Status;
}
// Check to make sure we are ECP, BECP, or EPP
ParDump2(PARDOT3DL, ("ParDot3Connect: pre check of ECP, BECP, EPP\n") );
if (afpForward[Extension->IdxForwardProtocol].ProtocolFamily != FAMILY_BECP &&
afpForward[Extension->IdxForwardProtocol].ProtocolFamily != FAMILY_ECP &&
afpForward[Extension->IdxForwardProtocol].ProtocolFamily != FAMILY_EPP)
{
ParDump2(PARERRORS, ("ParDot3Connect: FAIL. We did not reach ECP or EPP.\n") );
return STATUS_UNSUCCESSFUL;
}
}
#if PAR_TEST_HARNESS
ParHarnessLoad(Extension);
#endif
if (Extension->P12843DL.DataLinkMode == P12843DL_DOT3_DL)
{
ParDump2(PARDOT3DL, ("ParDot3Connect: P12843DL_DOT3_DL\n") );
Extension->P12843DL.fnRead = (PVOID) arpReverse[Extension->IdxReverseProtocol].fnRead;
Extension->P12843DL.fnWrite = (PVOID) afpForward[Extension->IdxForwardProtocol].fnWrite;
#if (1 == DVRH_USE_CORRECT_PTRS)
Extension->fnRead = ParDot3Read;
Extension->fnWrite = ParDot3Write;
#else
arpReverse[Extension->IdxReverseProtocol].fnRead = ParDot3Read;
afpForward[Extension->IdxForwardProtocol].fnWrite = ParDot3Write;
#endif
}
// DVDF 990504 - removed: Extension->P12843DL.bEventActive = NT_SUCCESS(Status);
ParDump2(PARDOT3DL, ("ParDot3Connect: Exit %d\n", NT_SUCCESS(Status)) );
return Status;
}
VOID
ParDot3CreateObject(
IN PDEVICE_EXTENSION Extension,
IN PUCHAR DOT3DL,
IN PUCHAR DOT3C
)
{
Extension->P12843DL.DataLinkMode = P12843DL_OFF;
Extension->P12843DL.fnReset = NULL;
ParDump2(PARDUMP_PNP_DL, ("ParDot3CreateObject: DOT3DL [%s] DOT3C\n",
DOT3DL, DOT3C) );
if (DOT3DL)
{
ULONG dataChannel;
ULONG pid = 0x285; // pid for dot4
// Only use the first channel.
if (!String2Num(&DOT3DL, ',', &dataChannel))
{
dataChannel = 77;
ParDump2(PARINFO, ("ParDot3CreateObject: No DataChannel Defined.\r\n"));
}
if (DOT3C)
{
if (!String2Num(&DOT3C, ',', &pid))
{
pid = 0x285;
ParDump2(PARINFO, ("ParDot3CreateObject: No CurrentPID Defined.\r\n"));
}
ParDump2(PARINFO, ("ParDot3CreateObject: .3 mode is ON.\r\n"));
}
Extension->P12843DL.DataChannel = (UCHAR)dataChannel;
Extension->P12843DL.CurrentPID = (USHORT)pid;
Extension->P12843DL.DataLinkMode = P12843DL_DOT3_DL;
ParDump2(PARINFO, ("ParDot3CreateObject: Data [%x] CurrentPID [%x]\r\n",
Extension->P12843DL.DataChannel,
Extension->P12843DL.CurrentPID));
}
#if DBG
if (Extension->P12843DL.DataLinkMode == P12843DL_OFF)
{
ParDump2(PARINFO, ("ParDot3CreateObject: DANGER: .3 mode is OFF.\r\n"));
}
#endif
}
VOID
ParDot4CreateObject(
IN PDEVICE_EXTENSION Extension,
IN PUCHAR DOT4DL
)
{
Extension->P12843DL.DataLinkMode = P12843DL_OFF;
Extension->P12843DL.fnReset = NULL;
ParDump2(PARDUMP_PNP_DL, ("ParDot3CreateObject: DOT4DL [%s]\n",
DOT4DL) );
if (DOT4DL)
{
UCHAR numValues = StringCountValues(DOT4DL, ',');
ULONG dataChannel, resetChannel, ResetByteCount;
ParDump2(PARDUMP_PNP_DL, ("ParDot3CreateObject: numValues [%d]\n",
numValues) );
if (!String2Num(&DOT4DL, ',', &dataChannel))
{
dataChannel = 77;
ParDump2(PARINFO, ("ParDot4CreateObject: No DataChannel Defined.\r\n"));
}
if ((String2Num(&DOT4DL, ',', &resetChannel))
&& (numValues > 1))
{
if (resetChannel == -1)
{
Extension->P12843DL.fnReset = ParMLCCompatReset;
}
else
{
Extension->P12843DL.fnReset = ParMLCECPReset;
}
ParDump2(PARINFO, ("ParDot4CreateObject: ResetChannel Defined.\r\n"));
}
else
{
Extension->P12843DL.fnReset = NULL;
ParDump2(PARINFO, ("ParDot4CreateObject: No ResetChannel Defined.\r\n"));
}
if ((!String2Num(&DOT4DL, 0, &ResetByteCount))
&& (numValues > 2))
{
ResetByteCount = 4;
ParDump2(PARINFO, ("ParDot4CreateObject: No ResetByteCount Defined.\r\n"));
}
Extension->P12843DL.DataChannel = (UCHAR)dataChannel;
Extension->P12843DL.ResetChannel = (UCHAR)resetChannel;
Extension->P12843DL.ResetByteCount = (UCHAR)ResetByteCount;
Extension->P12843DL.DataLinkMode = P12843DL_DOT4_DL;
ParDump2(PARINFO, ("ParDot4CreateObject: .4DL mode is ON.\r\n"));
ParDump2(PARINFO, ("ParDot4CreateObject: Data [%x] Reset [%x] Bytes [%x]\r\n",
Extension->P12843DL.DataChannel,
Extension->P12843DL.ResetChannel,
Extension->P12843DL.ResetByteCount));
}
#if DBG
if (Extension->P12843DL.DataLinkMode == P12843DL_OFF)
{
ParDump2(PARINFO, ("ParDot4CreateObject: DANGER: .4DL mode is OFF.\r\n"));
}
#endif
}
VOID
ParMLCCreateObject(
IN PDEVICE_EXTENSION Extension,
IN PUCHAR CMDField
)
{
// UCHAR ForwardInterfaceAddress;
// UCHAR ReverseInterfaceAddress;
Extension->P12843DL.DataLinkMode = P12843DL_OFF;
Extension->P12843DL.fnReset = NULL;
if (CMDField)
{
Extension->P12843DL.DataChannel = 77;
Extension->P12843DL.DataLinkMode = P12843DL_MLC_DL;
ParDump2(PARINFO, ("ParMLCCreateObject: MLC mode is on.\r\n"));
}
#if DBG
if (Extension->P12843DL.DataLinkMode == P12843DL_OFF)
{
ParDump2(PARINFO, ("ParMLCCreateObject: DANGER: MLC mode is OFF.\r\n"));
}
#endif
}
VOID
ParDot3DestroyObject(
IN PDEVICE_EXTENSION Extension
)
{
Extension->P12843DL.DataLinkMode = P12843DL_OFF;
}
NTSTATUS
ParDot3Disconnect(
IN PDEVICE_EXTENSION Extension
)
{
#if PAR_TEST_HARNESS
ParHarnessUnload(Extension);
#endif
if (Extension->P12843DL.DataLinkMode == P12843DL_DOT3_DL)
{
#if (1 == DVRH_USE_CORRECT_PTRS)
Extension->fnRead = arpReverse[Extension->IdxReverseProtocol].fnRead;
Extension->fnWrite = afpForward[Extension->IdxForwardProtocol].fnWrite;
#else
arpReverse[Extension->IdxReverseProtocol].fnRead = (PPROTOCOL_READ_ROUTINE) Extension->P12843DL.fnRead;
afpForward[Extension->IdxForwardProtocol].fnWrite = (PPROTOCOL_WRITE_ROUTINE) Extension->P12843DL.fnWrite;
#endif
}
Extension->P12843DL.bEventActive = FALSE;
Extension->P12843DL.Event = 0;
return STATUS_SUCCESS;
}
VOID
ParDot3ParseModes(
IN PDEVICE_EXTENSION Extension,
IN PUCHAR DOT3M
)
{
ULONG fwd = 0;
ULONG rev = 0;
ParDump2(PARDUMP_PNP_DL, ("ParDot3ParseModes: DOT3M [%s]\n",
DOT3M) );
if (DOT3M)
{
UCHAR numValues = StringCountValues(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.
ParDump2(PARINFO, ("ParDot3ParseModes: Malformed 1284.3M field.\r\n"));
Extension->P12843DL.FwdSkipMask = (USHORT) PAR_FWD_MODE_SKIP_MASK;
Extension->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;
ParDump2(PARINFO, ("ParDot3ParseModes: Couldn't read fwd of 1284.3M.\r\n"));
}
if (!String2Num(&DOT3M, ',', &rev))
{
rev = (USHORT) PAR_REV_MODE_SKIP_MASK;
ParDump2(PARINFO, ("ParDot3ParseModes: Couldn't read rev of 1284.3M.\r\n"));
}
}
Extension->P12843DL.FwdSkipMask = (USHORT) fwd;
Extension->P12843DL.RevSkipMask = (USHORT) rev;
}
NTSTATUS
ParDot3Read(
IN PDEVICE_EXTENSION Extension,
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) Extension->P12843DL.fnRead)(Extension, &ucScrap1, bytesToRead, &bytesTransferred);
}
while(NT_SUCCESS(Status) && bytesTransferred != bytesToRead);
// ================================== Check the first byte of SOF
if (!NT_SUCCESS(Status) || ucScrap1 != Dot3_StartOfFrame1)
{
ParDump2(PARERRORS, ("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) Extension->P12843DL.fnRead)(Extension, &ucScrap1, bytesToRead, &bytesTransferred);
}
while(NT_SUCCESS(Status) && bytesTransferred != bytesToRead);
// ================================== Check the second byte of SOF
if (!NT_SUCCESS(Status) || ucScrap1 != Dot3_StartOfFrame2)
{
ParDump2(PARERRORS, ("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) Extension->P12843DL.fnRead)(Extension, &usScrap1, bytesToRead, &bytesTransferred);
}
while(NT_SUCCESS(Status) && bytesTransferred != bytesToRead);
// ================================== Check the PID
if (!NT_SUCCESS(Status) || usScrap1 != Extension->P12843DL.CurrentPID)
{
ParDump2(PARERRORS, ("ParDot3Read: Header Read Failed. We're Hosed!\n"));
*BytesTransferred = 0;
return(Status);
}
// ================================== Read the DataLen
bytesToRead = 2;
bytesTransferred = 0;
do
{
Status = ((PPROTOCOL_READ_ROUTINE) Extension->P12843DL.fnRead)(Extension, &ucScrap2[0], bytesToRead, &bytesTransferred);
}
while(NT_SUCCESS(Status) && bytesTransferred != bytesToRead);
Dot3DataLen = (USHORT)((USHORT)(ucScrap2[0]<<8 | ucScrap2[1]) + 1);
// ================================== Check the DataLen
if (!NT_SUCCESS(Status))
{
ParDump2(PARERRORS, ("ParDot3Read: Header Read Failed. We're Hosed!\n"));
*BytesTransferred = 0;
return(Status);
}
// ================================== Read the Checksum
bytesToRead = 2;
bytesTransferred = 0;
do
{
Status = ((PPROTOCOL_READ_ROUTINE) Extension->P12843DL.fnRead)(Extension, &ucScrap2[0], bytesToRead, &bytesTransferred);
}
while(NT_SUCCESS(Status) && bytesTransferred != bytesToRead);
Dot3CheckSum = (USHORT)(ucScrap2[0]<<8 | ucScrap2[1]);
// ================================== Check the DataLen
if (!NT_SUCCESS(Status))
{
ParDump2(PARERRORS, ("ParDot3Read: Header Read Failed. We're Hosed!\n"));
*BytesTransferred = 0;
return(Status);
}
Status = ((PPROTOCOL_READ_ROUTINE) Extension->P12843DL.fnRead)(Extension, Buffer, BufferSize, BytesTransferred);
if (!NT_SUCCESS(Status))
{
ParDump2(PARERRORS, ("ParDot3Read: Data Read Failed. We're Hosed!\n"));
return(Status);
}
// BUG BUG.... What do I do if the buffer < data
if ((ULONG)Dot3DataLen > BufferSize)
{
// buffer overflow - abort operation
ParDump2(PARERRORS, ("ParDot3Read: Bad 1284.3DL Data Len. Buffer overflow. We're Hosed!\n"));
return STATUS_BUFFER_OVERFLOW;
}
// Check Checksum
if (~((~Extension->P12843DL.CurrentPID)+ (~(BufferSize - 1))) != Dot3CheckSum)
{
ParDump2(PARERRORS, ("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) Extension->P12843DL.fnRead)(Extension, &ucScrap1, bytesToRead, &bytesTransferred);
}
while(NT_SUCCESS(Status) && bytesTransferred != bytesToRead);
// ================================== Check the first byte of EOF
if (!NT_SUCCESS(Status) || ucScrap1 != Dot3_EndOfFrame1)
{
ParDump2(PARERRORS, ("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) Extension->P12843DL.fnRead)(Extension, &ucScrap1, bytesToRead, &bytesTransferred);
}
while(NT_SUCCESS(Status) && bytesTransferred != bytesToRead);
// ================================== Check the second byte of EOF
if (!NT_SUCCESS(Status) || ucScrap1 != Dot3_EndOfFrame2)
{
ParDump2(PARERRORS, ("ParDot3Read: Header Read Failed. We're Hosed!\n"));
*BytesTransferred = 0;
return(Status);
}
return Status;
}
NTSTATUS
ParDot3Write(
IN PDEVICE_EXTENSION Extension,
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;
// ========================= Write out first Byte of SOF
bytesToWrite = 1;
frameBytesTransferred = 0;
do
{
Status = ((PPROTOCOL_WRITE_ROUTINE) Extension->P12843DL.fnWrite)(Extension, &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) Extension->P12843DL.fnWrite)(Extension, &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) Extension->P12843DL.fnWrite)(Extension, &Extension->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) Extension->P12843DL.fnWrite)(Extension, &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;
scrap1=~((USHORT)(~Extension->P12843DL.CurrentPID)+ (~((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) Extension->P12843DL.fnWrite)(Extension, &scrap2, bytesToWrite, &frameBytesTransferred);
}
while(NT_SUCCESS(Status) && frameBytesTransferred != bytesToWrite);
// ========================= Check Checksum
if (!NT_SUCCESS(Status))
{
*BytesTransferred = 0;
return(Status);
}
Status = ((PPROTOCOL_WRITE_ROUTINE) Extension->P12843DL.fnWrite)(Extension, Buffer, BufferSize, BytesTransferred);
if (NT_SUCCESS(Status))
{
// ========================= Write out first Byte of EOF
bytesToWrite = 1;
frameBytesTransferred = 0;
do
{
Status = ((PPROTOCOL_WRITE_ROUTINE) Extension->P12843DL.fnWrite)(Extension, &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) Extension->P12843DL.fnWrite)(Extension, &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 PDEVICE_EXTENSION Extension
)
{
NTSTATUS Status = STATUS_SUCCESS;
UCHAR Reset[256]; // Reset should not require more than 256 chars
const ULONG ResetLen = Extension->P12843DL.ResetByteCount;
ULONG BytesWritten;
ParDump2( PARENTRY, ("ParMLCCompatReset: Start\n"));
if (Extension->P12843DL.DataLinkMode != P12843DL_MLC_DL &&
Extension->P12843DL.DataLinkMode != P12843DL_DOT4_DL)
{
ParDump2(PARINFO, ("ParMLCCompatReset: not MLC.\n") );
return STATUS_SUCCESS;
}
ParTerminate(Extension);
// Sending NULLs for reset
ParDump2(PARINFO, ("ParMLCCompatReset: Zeroing Reset Bytes.\n") );
RtlFillMemory(Reset, ResetLen, Extension->P12843DL.ResetByte);
ParDump2(PARINFO, ("ParMLCCompatReset: Sending Reset Bytes.\n") );
// Don't use the Dot3Write since we are in MLC Mode.
Status = SppWrite(Extension, Reset, ResetLen, &BytesWritten);
if (!NT_SUCCESS(Status) || BytesWritten != ResetLen)
{
ParDump2(PARERRORS, ("ParMLCCompatReset: FAIL. Write Failed\n") );
return Status;
}
ParDump2(PARINFO, ("ParMLCCompatReset: Reset Bytes were sent.\n") );
return Status;
}
NTSTATUS
ParMLCECPReset(
IN PDEVICE_EXTENSION Extension
)
{
NTSTATUS Status = STATUS_SUCCESS;
UCHAR Reset[256]; // Reset should not require more than 256 chars
const ULONG ResetLen = Extension->P12843DL.ResetByteCount;
ULONG BytesWritten;
ParDump2( PARENTRY, ("ParMLCECPReset: Start\n"));
if (Extension->P12843DL.DataLinkMode != P12843DL_MLC_DL &&
Extension->P12843DL.DataLinkMode != P12843DL_DOT4_DL)
{
ParDump2(PARINFO, ("ParMLCECPReset: not MLC.\n") );
return STATUS_SUCCESS;
}
Status = ParReverseToForward(Extension);
Extension->ForwardInterfaceAddress = Extension->P12843DL.ResetChannel;
Status = ParSetFwdAddress(Extension);
if (!NT_SUCCESS(Status))
{
ParDump2(PARERRORS, ("ParMLCECPReset: FAIL. Couldn't Set Reset Channel\n") );
return Status;
}
// Sending NULLs for reset
ParDump2(PARINFO, ("ParMLCECPReset: Zeroing Reset Bytes.\n") );
RtlFillMemory(Reset, ResetLen, Extension->P12843DL.ResetByte);
ParDump2(PARINFO, ("ParMLCECPReset: Sending Reset Bytes.\n") );
// Don't use the Dot3Write since we are in MLC Mode.
Status = afpForward[Extension->IdxForwardProtocol].fnWrite(Extension, Reset, ResetLen, &BytesWritten);
if (!NT_SUCCESS(Status) || BytesWritten != ResetLen)
{
ParDump2(PARERRORS, ("ParMLCECPReset: FAIL. Write Failed\n") );
return Status;
}
ParDump2(PARINFO, ("ParMLCECPReset: Reset Bytes were sent.\n") );
Extension->ForwardInterfaceAddress = Extension->P12843DL.DataChannel;
Status = ParSetFwdAddress(Extension);
if (!NT_SUCCESS(Status))
{
ParDump2(PARERRORS, ("ParMLCECPReset: FAIL. Couldn't Set Data Channel\n") );
return Status;
}
return Status;
}