165 lines
2.7 KiB
C
165 lines
2.7 KiB
C
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/*++
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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_read.c
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Abstract:
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Author:
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Thomas J. Dimitri (TommyD) 08-May-1992
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Environment:
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Kernel Mode - Or whatever is the equivalent on OS/2 and DOS.
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Revision History:
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--*/
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#include "asyncall.h"
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#define RAISEIRQL
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#if DBG
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ULONG UlFramesUp = 0;
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#endif
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#ifdef LALALA
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PVOID CurrentWatchPoint=0;
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static
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VOID
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AsyncSetBreakPoint(
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PVOID LinearAddress) {
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ASSERT(CurrentWatchPoint == 0);
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CurrentWatchPoint = LinearAddress;
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_asm {
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mov eax, LinearAddress
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mov dr0, eax
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mov eax, dr7
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or eax, 10303h
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mov dr7, eax
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}
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}
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static
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VOID
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AsyncRemoveBreakPoint(
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PVOID LinearAddress) {
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ASSERT(CurrentWatchPoint == LinearAddress);
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CurrentWatchPoint = 0;
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_asm {
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mov eax, dr7
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mov ebx, 10003h
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not ebx
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and eax, ebx
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mov dr7, eax
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}
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}
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#endif
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// the function below is called by an executive worker thread
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// to start reading frames.
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NTSTATUS
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AsyncStartReads(
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PASYNC_INFO pInfo
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)
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/*++
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--*/
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{
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UCHAR eventChar;
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//
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// Initialize locals.
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//
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//
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// assign back ptr from frame to adapter
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//
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pInfo->AsyncFrame->Adapter = pInfo->Adapter;
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//
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// assign other back ptr
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//
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pInfo->AsyncFrame->Info = pInfo;
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//
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// set baud rate and timeouts
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// we use a linkspeed of 0 to indicate
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// no read interval timeout
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//
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SetSerialStuff(NULL, pInfo, 0);
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eventChar = PPP_FLAG_BYTE;
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if (pInfo->GetLinkInfo.RecvFramingBits & SLIP_FRAMING) {
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eventChar = SLIP_END_BYTE;
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}
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SerialSetEventChar(pInfo, eventChar);
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//
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// We will wait on whenever we get the special PPP flag byte
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// or whenever we get RLSD or DSR changes (for possible hang-up
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// cases) or when the receive buffer is getting full.
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//
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SerialSetWaitMask(pInfo, pInfo->WaitMaskToUse) ;
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//
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// For SLIP and PPP reads we use the AsyncPPPRead routine.
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//
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AsyncPPPRead(pInfo);
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return NDIS_STATUS_SUCCESS;
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}
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VOID
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AsyncIndicateFragment(
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IN PASYNC_INFO pInfo,
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IN ULONG Error)
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{
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PASYNC_ADAPTER pAdapter=pInfo->Adapter;
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NDIS_MAC_FRAGMENT AsyncFragment;
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AsyncFragment.NdisLinkContext = pInfo->NdisLinkContext;
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AsyncFragment.Errors = Error;
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//
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// Tell the transport above (or really RasHub) that a frame
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// was just dropped. Give the endpoint when doing so.
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//
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NdisMIndicateStatus(
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pAdapter->MiniportHandle,
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NDIS_STATUS_WAN_FRAGMENT, // General Status
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&AsyncFragment, // Specific Status (address)
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sizeof(NDIS_MAC_FRAGMENT));
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}
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