162 lines
3.2 KiB
C
162 lines
3.2 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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vxd.c
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Abstract:
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This module contains misc dpmi functions for risc.
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Revision History:
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Neil Sandlin (neilsa) Nov. 1, 95 - split off from "misc" source
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--*/
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#include "precomp.h"
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#pragma hdrstop
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#include "softpc.h"
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#define W386_VCD_ID 0xe
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VOID
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GetVxDApiHandler(
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USHORT VxdId
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)
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{
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DECLARE_LocalVdmContext;
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if (VxdId == W386_VCD_ID) {
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setES(HIWORD(DosxVcdPmSvcCall));
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setDI(LOWORD(DosxVcdPmSvcCall));
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} else {
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setES(0);
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setDI(0);
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}
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}
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LONG
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VcdPmGetPortArray(
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VOID
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)
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/*++
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Routine Description:
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Use the registry enteries in HKEY_LOCAL_MACHINE\\HARDWARE\\DEVICEMAP\\SERIALCOMM
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to simulate the Virtual Comm Device API: VCD_PM_Get_Port_Array. See VCD.ASM
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in the Win 3.1 DDK.
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Arguments:
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None
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Return Value:
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Port Array in LOWORD. Bit array of valid ports:
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Bit Set -> Port valid
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Bit clear -> Port invalid
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Bit 0 -> COM1, Bit 1 -> COM2, Bit 2 -> COM3...
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--*/
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{
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HKEY hSerialCommKey;
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DWORD dwPortArray;
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DWORD dwPortNum;
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DWORD cbPortName;
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DWORD cbPortValue;
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CHAR szPortName[64];
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CHAR szPortValue[64];
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LONG iPort;
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LONG iStatus;
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dwPortArray = 0;
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if (RegOpenKeyEx (HKEY_LOCAL_MACHINE,
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"HARDWARE\\DEVICEMAP\\SERIALCOMM",
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0, KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS,
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&hSerialCommKey) == ERROR_SUCCESS){
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cbPortName = sizeof(szPortName);
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cbPortValue = sizeof(szPortValue);
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for (iPort = 0;
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(iStatus = RegEnumValue(hSerialCommKey,
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iPort, szPortName, &cbPortName,
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NULL, NULL, szPortValue,
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&cbPortValue)) != ERROR_NO_MORE_ITEMS;
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iPort++)
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{
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if ((iStatus == ERROR_SUCCESS) && (cbPortValue > 3)) {
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if (NT_SUCCESS(RtlCharToInteger(szPortValue+3,10,&dwPortNum))) {
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dwPortArray |= (1 << (dwPortNum - 1));
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}
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}
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cbPortName = sizeof(szPortName);
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cbPortValue = sizeof(szPortValue);
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}
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// WOW only supports 9 ports. See WU32OPENCOM in WUCOMM.C.
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dwPortArray &= 0x1FF;
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RegCloseKey(hSerialCommKey);
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}
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return(dwPortArray);
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}
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// The following values taken from Win 3.1 DDK VCD.ASM:
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#define VCD_PM_Get_Version 0
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#define VCD_PM_Get_Port_Array 1
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#define VCD_PM_Get_Port_Behavior 2
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#define VCD_PM_Set_Port_Behavior 3
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#define VCD_PM_Acquire_Port 4
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#define VCD_PM_Free_Port 5
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#define VCD_PM_Steal_Port 6
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VOID
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DpmiVcdPmSvcCall32(
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VOID
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)
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/*++
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Routine Description:
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Dispatch VCD API requests to the correct API.
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Arguments:
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Client DX contains API function id.
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Return Value:
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Depends on API.
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--*/
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{
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DECLARE_LocalVdmContext;
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switch (getDX()) {
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case VCD_PM_Get_Version:
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setAX(0x30A);
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break;
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case VCD_PM_Get_Port_Array:
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setAX((WORD)VcdPmGetPortArray());
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break;
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default :
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ASSERT(0);
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setCF(1);
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}
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}
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