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1092 lines
26 KiB
C
1092 lines
26 KiB
C
/*
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* DEC 93 Erik Bos <erik@xs4all.nl>
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*
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* Copyright 1996 Marcus Meissner
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*
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* Copyright 2001 Mike McCormack
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* History:
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*
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* Mar 31, 1999. Ove Kåven <ovek@arcticnet.no>
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* - Implemented buffers and EnableCommNotification.
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*
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* Apr 3, 1999. Lawson Whitney <lawson_whitney@juno.com>
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* - Fixed the modem control part of EscapeCommFunction16.
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*
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* Mar 3, 1999. Ove Kåven <ovek@arcticnet.no>
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* - Use port indices instead of unixfds for win16
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* - Moved things around (separated win16 and win32 routines)
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* - Added some hints on how to implement buffers and EnableCommNotification.
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*
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* May 26, 1997. Fixes and comments by Rick Richardson <rick@dgii.com> [RER]
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* - ptr->fd wasn't getting cleared on close.
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* - GetCommEventMask() and GetCommError() didn't do much of anything.
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* IMHO, they are still wrong, but they at least implement the RXCHAR
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* event and return I/O queue sizes, which makes the app I'm interested
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* in (analog devices EZKIT DSP development system) work.
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*
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* August 12, 1997. Take a bash at SetCommEventMask - Lawson Whitney
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* <lawson_whitney@juno.com>
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* July 6, 1998. Fixes and comments by Valentijn Sessink
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* <vsessink@ic.uva.nl> [V]
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* Oktober 98, Rein Klazes [RHK]
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* A program that wants to monitor the modem status line (RLSD/DCD) may
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* poll the modem status register in the commMask structure. I update the bit
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* in GetCommError, waiting for an implementation of communication events.
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*
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*/
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#include <stdlib.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <ctype.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wine/winuser16.h"
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#include "user_private.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(comm);
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/* window's semi documented modem status register */
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#define COMM_MSR_OFFSET 35
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#define MSR_CTS 0x10
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#define MSR_DSR 0x20
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#define MSR_RI 0x40
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#define MSR_RLSD 0x80
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#define MSR_MASK (MSR_CTS|MSR_DSR|MSR_RI|MSR_RLSD)
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#define FLAG_LPT 0x80
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#define MAX_PORTS 9
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struct DosDeviceStruct {
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HANDLE handle;
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BOOL suspended;
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int unget,xmit;
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int evtchar;
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/* events */
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int commerror, eventmask;
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/* buffers */
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char *inbuf,*outbuf;
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unsigned ibuf_size,ibuf_head,ibuf_tail;
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unsigned obuf_size,obuf_head,obuf_tail;
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/* notifications */
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HWND wnd;
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int n_read, n_write;
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OVERLAPPED read_ov, write_ov;
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/* save terminal states */
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DCB16 dcb;
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/* pointer to unknown(==undocumented) comm structure */
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SEGPTR seg_unknown;
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BYTE unknown[40];
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};
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static struct DosDeviceStruct COM[MAX_PORTS];
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static struct DosDeviceStruct LPT[MAX_PORTS];
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/* update window's semi documented modem status register */
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/* see knowledge base Q101417 */
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static void COMM_MSRUpdate( HANDLE handle, UCHAR * pMsr )
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{
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UCHAR tmpmsr=0;
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DWORD mstat=0;
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if(!GetCommModemStatus(handle,&mstat))
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return;
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if(mstat & MS_CTS_ON) tmpmsr |= MSR_CTS;
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if(mstat & MS_DSR_ON) tmpmsr |= MSR_DSR;
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if(mstat & MS_RING_ON) tmpmsr |= MSR_RI;
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if(mstat & MS_RLSD_ON) tmpmsr |= MSR_RLSD;
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*pMsr = (*pMsr & ~MSR_MASK) | tmpmsr;
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}
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static struct DosDeviceStruct *GetDeviceStruct(int index)
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{
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if ((index&0x7F)<=MAX_PORTS) {
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if (!(index&FLAG_LPT)) {
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if (COM[index].handle)
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return &COM[index];
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} else {
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index &= 0x7f;
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if (LPT[index].handle)
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return &LPT[index];
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}
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}
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return NULL;
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}
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static int GetCommPort_ov(const OVERLAPPED *ov, int write)
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{
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int x;
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for (x=0; x<MAX_PORTS; x++) {
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if (ov == (write?&COM[x].write_ov:&COM[x].read_ov))
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return x;
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}
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return -1;
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}
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static int WinError(void)
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{
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TRACE("errno = %d\n", errno);
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switch (errno) {
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default:
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return CE_IOE;
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}
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}
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static unsigned comm_inbuf(const struct DosDeviceStruct *ptr)
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{
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return ((ptr->ibuf_tail > ptr->ibuf_head) ? ptr->ibuf_size : 0)
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+ ptr->ibuf_head - ptr->ibuf_tail;
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}
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static unsigned comm_outbuf(const struct DosDeviceStruct *ptr)
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{
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return ((ptr->obuf_tail > ptr->obuf_head) ? ptr->obuf_size : 0)
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+ ptr->obuf_head - ptr->obuf_tail;
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}
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static void comm_waitread(struct DosDeviceStruct *ptr);
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static void comm_waitwrite(struct DosDeviceStruct *ptr);
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static VOID WINAPI COMM16_ReadComplete(DWORD dwErrorCode, DWORD len, LPOVERLAPPED ov)
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{
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int prev;
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WORD mask = 0;
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int cid = GetCommPort_ov(ov,0);
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struct DosDeviceStruct *ptr;
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if(cid<0) {
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ERR("async write with bad overlapped pointer\n");
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return;
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}
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ptr = &COM[cid];
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/* we get cancelled when CloseComm is called */
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if (dwErrorCode==ERROR_OPERATION_ABORTED)
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{
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TRACE("Cancelled\n");
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return;
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}
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/* read data from comm port */
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if (dwErrorCode != NO_ERROR) {
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ERR("async read failed, error %d\n",dwErrorCode);
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COM[cid].commerror = CE_RXOVER;
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return;
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}
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TRACE("async read completed %d bytes\n",len);
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prev = comm_inbuf(ptr);
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/* check for events */
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if ((ptr->eventmask & EV_RXFLAG) &&
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memchr(ptr->inbuf + ptr->ibuf_head, ptr->evtchar, len)) {
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*(WORD*)(COM[cid].unknown) |= EV_RXFLAG;
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mask |= CN_EVENT;
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}
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if (ptr->eventmask & EV_RXCHAR) {
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*(WORD*)(COM[cid].unknown) |= EV_RXCHAR;
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mask |= CN_EVENT;
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}
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/* advance buffer position */
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ptr->ibuf_head += len;
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if (ptr->ibuf_head >= ptr->ibuf_size)
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ptr->ibuf_head = 0;
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/* check for notification */
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if (ptr->wnd && (ptr->n_read>0) && (prev<ptr->n_read) &&
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(comm_inbuf(ptr)>=ptr->n_read)) {
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/* passed the receive notification threshold */
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mask |= CN_RECEIVE;
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}
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/* send notifications, if any */
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if (ptr->wnd && mask) {
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TRACE("notifying %p: cid=%d, mask=%02x\n", ptr->wnd, cid, mask);
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PostMessageA(ptr->wnd, WM_COMMNOTIFY, cid, mask);
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}
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/* on real windows, this could cause problems, since it is recursive */
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/* restart the receive */
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comm_waitread(ptr);
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}
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/* this is meant to work like write() */
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static INT COMM16_WriteFile(HANDLE hComm, LPCVOID buffer, DWORD len)
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{
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OVERLAPPED ov;
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DWORD count= -1;
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ZeroMemory(&ov,sizeof(ov));
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ov.hEvent = CreateEventW(NULL,0,0,NULL);
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if(ov.hEvent==INVALID_HANDLE_VALUE)
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return -1;
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if(!WriteFile(hComm,buffer,len,&count,&ov))
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{
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if(GetLastError()==ERROR_IO_PENDING)
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{
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GetOverlappedResult(hComm,&ov,&count,TRUE);
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}
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}
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CloseHandle(ov.hEvent);
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return count;
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}
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static VOID WINAPI COMM16_WriteComplete(DWORD dwErrorCode, DWORD len, LPOVERLAPPED ov)
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{
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int prev, bleft;
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WORD mask = 0;
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int cid = GetCommPort_ov(ov,1);
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struct DosDeviceStruct *ptr;
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if(cid<0) {
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ERR("async write with bad overlapped pointer\n");
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return;
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}
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ptr = &COM[cid];
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/* read data from comm port */
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if (dwErrorCode != NO_ERROR) {
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ERR("async write failed, error %d\n",dwErrorCode);
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COM[cid].commerror = CE_RXOVER;
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return;
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}
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TRACE("async write completed %d bytes\n",len);
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/* update the buffer pointers */
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prev = comm_outbuf(&COM[cid]);
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ptr->obuf_tail += len;
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if (ptr->obuf_tail >= ptr->obuf_size)
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ptr->obuf_tail = 0;
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/* write any TransmitCommChar character */
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if (ptr->xmit>=0) {
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len = COMM16_WriteFile(ptr->handle, &(ptr->xmit), 1);
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if (len > 0) ptr->xmit = -1;
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}
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/* write from output queue */
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bleft = ((ptr->obuf_tail <= ptr->obuf_head) ?
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ptr->obuf_head : ptr->obuf_size) - ptr->obuf_tail;
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/* check for notification */
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if (ptr->wnd && (ptr->n_write>0) && (prev>=ptr->n_write) &&
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(comm_outbuf(ptr)<ptr->n_write)) {
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/* passed the transmit notification threshold */
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mask |= CN_TRANSMIT;
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}
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/* send notifications, if any */
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if (ptr->wnd && mask) {
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TRACE("notifying %p: cid=%d, mask=%02x\n", ptr->wnd, cid, mask);
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PostMessageA(ptr->wnd, WM_COMMNOTIFY, cid, mask);
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}
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/* start again if necessary */
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if(bleft)
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comm_waitwrite(ptr);
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}
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static void comm_waitread(struct DosDeviceStruct *ptr)
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{
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unsigned int bleft;
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COMSTAT stat;
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/* FIXME: get timeouts working properly so we can read bleft bytes */
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bleft = ((ptr->ibuf_tail > ptr->ibuf_head) ?
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(ptr->ibuf_tail-1) : ptr->ibuf_size) - ptr->ibuf_head;
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/* find out how many bytes are left in the buffer */
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if(ClearCommError(ptr->handle,NULL,&stat))
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bleft = (bleft<stat.cbInQue) ? bleft : stat.cbInQue;
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else
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bleft = 1;
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/* always read at least one byte */
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if(bleft==0)
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bleft++;
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ReadFileEx(ptr->handle,
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ptr->inbuf + ptr->ibuf_head,
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bleft,
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&ptr->read_ov,
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COMM16_ReadComplete);
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}
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static void comm_waitwrite(struct DosDeviceStruct *ptr)
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{
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int bleft;
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bleft = ((ptr->obuf_tail <= ptr->obuf_head) ?
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ptr->obuf_head : ptr->obuf_size) - ptr->obuf_tail;
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WriteFileEx(ptr->handle,
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ptr->outbuf + ptr->obuf_tail,
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bleft,
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&ptr->write_ov,
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COMM16_WriteComplete);
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}
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/*****************************************************************************
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* COMM16_DCBtoDCB16 (Internal)
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*/
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static INT16 COMM16_DCBtoDCB16(const DCB *lpdcb, LPDCB16 lpdcb16)
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{
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if(lpdcb->BaudRate<0x10000)
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lpdcb16->BaudRate = lpdcb->BaudRate;
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else if(lpdcb->BaudRate==115200)
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lpdcb16->BaudRate = 57601;
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else {
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WARN("Baud rate can't be converted\n");
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lpdcb16->BaudRate = 57601;
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}
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lpdcb16->ByteSize = lpdcb->ByteSize;
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lpdcb16->fParity = lpdcb->fParity;
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lpdcb16->Parity = lpdcb->Parity;
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lpdcb16->StopBits = lpdcb->StopBits;
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lpdcb16->RlsTimeout = 50;
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lpdcb16->CtsTimeout = 50;
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lpdcb16->DsrTimeout = 50;
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lpdcb16->fNull = 0;
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lpdcb16->fChEvt = 0;
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lpdcb16->fBinary = 1;
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lpdcb16->fDtrflow = (lpdcb->fDtrControl==DTR_CONTROL_HANDSHAKE);
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lpdcb16->fRtsflow = (lpdcb->fRtsControl==RTS_CONTROL_HANDSHAKE);
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lpdcb16->fOutxCtsFlow = lpdcb->fOutxCtsFlow;
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lpdcb16->fOutxDsrFlow = lpdcb->fOutxDsrFlow;
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lpdcb16->fDtrDisable = (lpdcb->fDtrControl==DTR_CONTROL_DISABLE);
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lpdcb16->fInX = lpdcb->fInX;
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lpdcb16->fOutX = lpdcb->fOutX;
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/*
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lpdcb16->XonChar =
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lpdcb16->XoffChar =
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*/
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lpdcb16->XonLim = 10;
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lpdcb16->XoffLim = 10;
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return 0;
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}
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/**************************************************************************
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* BuildCommDCB (USER.213)
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*
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* According to the ECMA-234 (368.3) the function will return FALSE on
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* success, otherwise it will return -1.
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*/
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INT16 WINAPI BuildCommDCB16(LPCSTR device, LPDCB16 lpdcb)
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{
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/* "COM1:96,n,8,1" */
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/* 012345 */
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int port;
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DCB dcb;
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TRACE("(%s), ptr %p\n", device, lpdcb);
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if (strnicmp(device,"COM",3))
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return -1;
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port = device[3] - '0';
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if (port-- == 0) {
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ERR("BUG ! COM0 can't exist!\n");
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return -1;
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}
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memset(lpdcb, 0, sizeof(DCB16)); /* initialize */
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lpdcb->Id = port;
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dcb.DCBlength = sizeof(DCB);
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if (strchr(device,'=')) /* block new style */
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return -1;
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if(!BuildCommDCBA(device,&dcb))
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return -1;
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return COMM16_DCBtoDCB16(&dcb, lpdcb);
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}
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/*****************************************************************************
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* OpenComm (USER.200)
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*/
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INT16 WINAPI OpenComm16(LPCSTR device,UINT16 cbInQueue,UINT16 cbOutQueue)
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{
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int port;
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HANDLE handle;
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TRACE("%s, %d, %d\n", device, cbInQueue, cbOutQueue);
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if (strlen(device) < 4)
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return IE_BADID;
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port = device[3] - '0';
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if (port-- == 0)
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ERR("BUG ! COM0 or LPT0 don't exist !\n");
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if (!strnicmp(device,"COM",3))
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{
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if (COM[port].handle)
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return IE_OPEN;
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handle = CreateFileA(device, GENERIC_READ|GENERIC_WRITE,
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FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, CREATE_ALWAYS,
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FILE_FLAG_OVERLAPPED|FILE_FLAG_NO_BUFFERING, 0 );
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if (handle == INVALID_HANDLE_VALUE) {
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return IE_HARDWARE;
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} else {
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memset(COM[port].unknown, 0, sizeof(COM[port].unknown));
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COM[port].seg_unknown = 0;
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COM[port].handle = handle;
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COM[port].commerror = 0;
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COM[port].eventmask = 0;
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COM[port].evtchar = 0; /* FIXME: default? */
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/* save terminal state */
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GetCommState16(port,&COM[port].dcb);
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/* init priority characters */
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COM[port].unget = -1;
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COM[port].xmit = -1;
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/* allocate buffers */
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COM[port].ibuf_size = cbInQueue;
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COM[port].ibuf_head = COM[port].ibuf_tail = 0;
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COM[port].obuf_size = cbOutQueue;
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COM[port].obuf_head = COM[port].obuf_tail = 0;
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COM[port].inbuf = HeapAlloc(GetProcessHeap(), 0, cbInQueue);
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if (COM[port].inbuf) {
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COM[port].outbuf = HeapAlloc( GetProcessHeap(), 0, cbOutQueue);
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if (!COM[port].outbuf)
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HeapFree( GetProcessHeap(), 0, COM[port].inbuf);
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} else COM[port].outbuf = NULL;
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if (!COM[port].outbuf) {
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/* not enough memory */
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CloseHandle(COM[port].handle);
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ERR("out of memory\n");
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return IE_MEMORY;
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}
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ZeroMemory(&COM[port].read_ov,sizeof (OVERLAPPED));
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ZeroMemory(&COM[port].write_ov,sizeof (OVERLAPPED));
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comm_waitread( &COM[port] );
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USER16_AlertableWait++;
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return port;
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}
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}
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else
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if (!strnicmp(device,"LPT",3)) {
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if (LPT[port].handle)
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return IE_OPEN;
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|
|
handle = CreateFileA(device, GENERIC_READ|GENERIC_WRITE,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, CREATE_ALWAYS, 0, 0 );
|
|
if (handle == INVALID_HANDLE_VALUE) {
|
|
return IE_HARDWARE;
|
|
} else {
|
|
LPT[port].handle = handle;
|
|
LPT[port].commerror = 0;
|
|
LPT[port].eventmask = 0;
|
|
return port|FLAG_LPT;
|
|
}
|
|
}
|
|
return IE_BADID;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* CloseComm (USER.207)
|
|
*/
|
|
INT16 WINAPI CloseComm16(INT16 cid)
|
|
{
|
|
struct DosDeviceStruct *ptr;
|
|
|
|
TRACE("cid=%d\n", cid);
|
|
if ((ptr = GetDeviceStruct(cid)) == NULL) {
|
|
FIXME("no cid=%d found!\n", cid);
|
|
return -1;
|
|
}
|
|
if (!(cid&FLAG_LPT)) {
|
|
/* COM port */
|
|
UnMapLS( COM[cid].seg_unknown );
|
|
USER16_AlertableWait--;
|
|
CancelIo(ptr->handle);
|
|
|
|
/* free buffers */
|
|
HeapFree( GetProcessHeap(), 0, ptr->outbuf);
|
|
HeapFree( GetProcessHeap(), 0, ptr->inbuf);
|
|
|
|
/* reset modem lines */
|
|
SetCommState16(&COM[cid].dcb);
|
|
}
|
|
|
|
if (!CloseHandle(ptr->handle)) {
|
|
ptr->commerror = WinError();
|
|
/* FIXME: should we clear ptr->handle here? */
|
|
return -1;
|
|
} else {
|
|
ptr->commerror = 0;
|
|
ptr->handle = 0;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* SetCommBreak (USER.210)
|
|
*/
|
|
INT16 WINAPI SetCommBreak16(INT16 cid)
|
|
{
|
|
struct DosDeviceStruct *ptr;
|
|
|
|
TRACE("cid=%d\n", cid);
|
|
if ((ptr = GetDeviceStruct(cid)) == NULL) {
|
|
FIXME("no cid=%d found!\n", cid);
|
|
return -1;
|
|
}
|
|
|
|
ptr->suspended = TRUE;
|
|
ptr->commerror = 0;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* ClearCommBreak (USER.211)
|
|
*/
|
|
INT16 WINAPI ClearCommBreak16(INT16 cid)
|
|
{
|
|
struct DosDeviceStruct *ptr;
|
|
|
|
TRACE("cid=%d\n", cid);
|
|
if (!(ptr = GetDeviceStruct(cid))) {
|
|
FIXME("no cid=%d found!\n", cid);
|
|
return -1;
|
|
}
|
|
ptr->suspended = FALSE;
|
|
ptr->commerror = 0;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* EscapeCommFunction (USER.214)
|
|
*/
|
|
LONG WINAPI EscapeCommFunction16(UINT16 cid,UINT16 nFunction)
|
|
{
|
|
struct DosDeviceStruct *ptr;
|
|
|
|
TRACE("cid=%d, function=%d\n", cid, nFunction);
|
|
|
|
switch(nFunction) {
|
|
case GETMAXCOM:
|
|
TRACE("GETMAXCOM\n");
|
|
return 4; /* FIXME */
|
|
|
|
case GETMAXLPT:
|
|
TRACE("GETMAXLPT\n");
|
|
return FLAG_LPT + 3; /* FIXME */
|
|
|
|
case GETBASEIRQ:
|
|
TRACE("GETBASEIRQ\n");
|
|
/* FIXME: use tables */
|
|
/* just fake something for now */
|
|
if (cid & FLAG_LPT) {
|
|
/* LPT1: irq 7, LPT2: irq 5 */
|
|
return (cid & 0x7f) ? 5 : 7;
|
|
} else {
|
|
/* COM1: irq 4, COM2: irq 3,
|
|
COM3: irq 4, COM4: irq 3 */
|
|
return 4 - (cid & 1);
|
|
}
|
|
}
|
|
|
|
if ((ptr = GetDeviceStruct(cid)) == NULL) {
|
|
FIXME("no cid=%d found!\n", cid);
|
|
return -1;
|
|
}
|
|
|
|
switch (nFunction) {
|
|
case RESETDEV:
|
|
case CLRDTR:
|
|
case CLRRTS:
|
|
case SETDTR:
|
|
case SETRTS:
|
|
case SETXOFF:
|
|
case SETXON:
|
|
if(EscapeCommFunction(ptr->handle,nFunction))
|
|
return 0;
|
|
else {
|
|
ptr->commerror = WinError();
|
|
return -1;
|
|
}
|
|
|
|
case CLRBREAK:
|
|
case SETBREAK:
|
|
default:
|
|
WARN("(cid=%d,nFunction=%d): Unknown function\n",
|
|
cid, nFunction);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* FlushComm (USER.215)
|
|
*/
|
|
INT16 WINAPI FlushComm16(INT16 cid,INT16 fnQueue)
|
|
{
|
|
DWORD queue;
|
|
struct DosDeviceStruct *ptr;
|
|
|
|
TRACE("cid=%d, queue=%d\n", cid, fnQueue);
|
|
if ((ptr = GetDeviceStruct(cid)) == NULL) {
|
|
FIXME("no cid=%d found!\n", cid);
|
|
return -1;
|
|
}
|
|
switch (fnQueue) {
|
|
case 0:
|
|
queue = PURGE_TXABORT;
|
|
ptr->obuf_tail = ptr->obuf_head;
|
|
break;
|
|
case 1:
|
|
queue = PURGE_RXABORT;
|
|
ptr->ibuf_head = ptr->ibuf_tail;
|
|
break;
|
|
default:
|
|
WARN("(cid=%d,fnQueue=%d):Unknown queue\n",
|
|
cid, fnQueue);
|
|
return -1;
|
|
}
|
|
|
|
if (!PurgeComm(ptr->handle,queue)) {
|
|
ptr->commerror = WinError();
|
|
return -1;
|
|
} else {
|
|
ptr->commerror = 0;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/********************************************************************
|
|
* GetCommError (USER.203)
|
|
*/
|
|
INT16 WINAPI GetCommError16(INT16 cid,LPCOMSTAT16 lpStat)
|
|
{
|
|
int temperror;
|
|
struct DosDeviceStruct *ptr;
|
|
unsigned char *stol;
|
|
|
|
if ((ptr = GetDeviceStruct(cid)) == NULL) {
|
|
FIXME("no handle for cid = %0x!\n",cid);
|
|
return -1;
|
|
}
|
|
if (cid&FLAG_LPT) {
|
|
WARN(" cid %d not comm port\n",cid);
|
|
return CE_MODE;
|
|
}
|
|
stol = (unsigned char *)COM[cid].unknown + COMM_MSR_OFFSET;
|
|
COMM_MSRUpdate( ptr->handle, stol );
|
|
|
|
if (lpStat) {
|
|
lpStat->status = 0;
|
|
|
|
if (comm_inbuf(ptr) == 0)
|
|
SleepEx(1,TRUE);
|
|
|
|
lpStat->cbOutQue = comm_outbuf(ptr);
|
|
lpStat->cbInQue = comm_inbuf(ptr);
|
|
|
|
TRACE("cid %d, error %d, stat %d in %d out %d, stol %x\n",
|
|
cid, ptr->commerror, lpStat->status, lpStat->cbInQue,
|
|
lpStat->cbOutQue, *stol);
|
|
}
|
|
else
|
|
TRACE("cid %d, error %d, lpStat NULL stol %x\n",
|
|
cid, ptr->commerror, *stol);
|
|
|
|
/* Return any errors and clear it */
|
|
temperror = ptr->commerror;
|
|
ptr->commerror = 0;
|
|
return(temperror);
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* SetCommEventMask (USER.208)
|
|
*/
|
|
SEGPTR WINAPI SetCommEventMask16(INT16 cid,UINT16 fuEvtMask)
|
|
{
|
|
struct DosDeviceStruct *ptr;
|
|
unsigned char *stol;
|
|
|
|
TRACE("cid %d,mask %d\n",cid,fuEvtMask);
|
|
if ((ptr = GetDeviceStruct(cid)) == NULL) {
|
|
FIXME("no handle for cid = %0x!\n",cid);
|
|
return 0;
|
|
}
|
|
|
|
ptr->eventmask = fuEvtMask;
|
|
|
|
if (cid&FLAG_LPT) {
|
|
WARN(" cid %d not comm port\n",cid);
|
|
return 0;
|
|
}
|
|
/* it's a COM port ? -> modify flags */
|
|
stol = (unsigned char *)COM[cid].unknown + COMM_MSR_OFFSET;
|
|
COMM_MSRUpdate( ptr->handle, stol );
|
|
|
|
TRACE(" modem dcd construct %x\n",*stol);
|
|
if (!COM[cid].seg_unknown) COM[cid].seg_unknown = MapLS( COM[cid].unknown );
|
|
return COM[cid].seg_unknown;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* GetCommEventMask (USER.209)
|
|
*/
|
|
UINT16 WINAPI GetCommEventMask16(INT16 cid,UINT16 fnEvtClear)
|
|
{
|
|
struct DosDeviceStruct *ptr;
|
|
WORD events;
|
|
|
|
TRACE("cid %d, mask %d\n", cid, fnEvtClear);
|
|
if ((ptr = GetDeviceStruct(cid)) == NULL) {
|
|
FIXME("no handle for cid = %0x!\n",cid);
|
|
return 0;
|
|
}
|
|
|
|
if (cid&FLAG_LPT) {
|
|
WARN(" cid %d not comm port\n",cid);
|
|
return 0;
|
|
}
|
|
|
|
events = *(WORD*)(COM[cid].unknown) & fnEvtClear;
|
|
*(WORD*)(COM[cid].unknown) &= ~fnEvtClear;
|
|
return events;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* SetCommState (USER.201)
|
|
*/
|
|
INT16 WINAPI SetCommState16(LPDCB16 lpdcb)
|
|
{
|
|
struct DosDeviceStruct *ptr;
|
|
DCB dcb;
|
|
|
|
TRACE("cid %d, ptr %p\n", lpdcb->Id, lpdcb);
|
|
if ((ptr = GetDeviceStruct(lpdcb->Id)) == NULL) {
|
|
FIXME("no handle for cid = %0x!\n",lpdcb->Id);
|
|
return -1;
|
|
}
|
|
|
|
memset(&dcb,0,sizeof(dcb));
|
|
dcb.DCBlength = sizeof(dcb);
|
|
|
|
/*
|
|
* according to MSDN, we should first interpret lpdcb->BaudRate as follows:
|
|
* 1. if the baud rate is a CBR constant, interpret it.
|
|
* 2. if it is greater than 57600, the baud rate is 115200
|
|
* 3. use the actual baudrate
|
|
* steps 2 and 3 are equivalent to 16550 baudrate divisor = 115200/BaudRate
|
|
*/
|
|
switch(lpdcb->BaudRate)
|
|
{
|
|
case CBR_110: dcb.BaudRate = 110; break;
|
|
case CBR_300: dcb.BaudRate = 300; break;
|
|
case CBR_600: dcb.BaudRate = 600; break;
|
|
case CBR_1200: dcb.BaudRate = 1200; break;
|
|
case CBR_2400: dcb.BaudRate = 2400; break;
|
|
case CBR_4800: dcb.BaudRate = 4800; break;
|
|
case CBR_9600: dcb.BaudRate = 9600; break;
|
|
case CBR_14400: dcb.BaudRate = 14400; break;
|
|
case CBR_19200: dcb.BaudRate = 19200; break;
|
|
case CBR_38400: dcb.BaudRate = 38400; break;
|
|
case CBR_56000: dcb.BaudRate = 56000; break;
|
|
case CBR_128000: dcb.BaudRate = 128000; break;
|
|
case CBR_256000: dcb.BaudRate = 256000; break;
|
|
default:
|
|
if(lpdcb->BaudRate>57600)
|
|
dcb.BaudRate = 115200;
|
|
else
|
|
dcb.BaudRate = lpdcb->BaudRate;
|
|
}
|
|
|
|
dcb.ByteSize=lpdcb->ByteSize;
|
|
dcb.StopBits=lpdcb->StopBits;
|
|
|
|
dcb.fParity=lpdcb->fParity;
|
|
dcb.Parity=lpdcb->Parity;
|
|
|
|
dcb.fOutxCtsFlow = lpdcb->fOutxCtsFlow;
|
|
|
|
if (lpdcb->fDtrflow || lpdcb->fRtsflow)
|
|
dcb.fRtsControl = TRUE;
|
|
|
|
if (lpdcb->fDtrDisable)
|
|
dcb.fDtrControl = TRUE;
|
|
|
|
ptr->evtchar = lpdcb->EvtChar;
|
|
|
|
dcb.fInX = lpdcb->fInX;
|
|
dcb.fOutX = lpdcb->fOutX;
|
|
|
|
if (!SetCommState(ptr->handle,&dcb)) {
|
|
ptr->commerror = WinError();
|
|
return -1;
|
|
} else {
|
|
ptr->commerror = 0;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* GetCommState (USER.202)
|
|
*/
|
|
INT16 WINAPI GetCommState16(INT16 cid, LPDCB16 lpdcb)
|
|
{
|
|
struct DosDeviceStruct *ptr;
|
|
DCB dcb;
|
|
|
|
TRACE("cid %d, ptr %p\n", cid, lpdcb);
|
|
if ((ptr = GetDeviceStruct(cid)) == NULL) {
|
|
FIXME("no handle for cid = %0x!\n",cid);
|
|
return -1;
|
|
}
|
|
if (!GetCommState(ptr->handle,&dcb)) {
|
|
ptr->commerror = WinError();
|
|
return -1;
|
|
}
|
|
|
|
lpdcb->Id = cid;
|
|
|
|
COMM16_DCBtoDCB16(&dcb,lpdcb);
|
|
|
|
lpdcb->EvtChar = ptr->evtchar;
|
|
|
|
ptr->commerror = 0;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* TransmitCommChar (USER.206)
|
|
*/
|
|
INT16 WINAPI TransmitCommChar16(INT16 cid,CHAR chTransmit)
|
|
{
|
|
struct DosDeviceStruct *ptr;
|
|
|
|
TRACE("cid %d, data %d\n", cid, chTransmit);
|
|
if ((ptr = GetDeviceStruct(cid)) == NULL) {
|
|
FIXME("no handle for cid = %0x!\n",cid);
|
|
return -1;
|
|
}
|
|
|
|
if (ptr->suspended) {
|
|
ptr->commerror = IE_HARDWARE;
|
|
return -1;
|
|
}
|
|
|
|
if (ptr->xmit >= 0) {
|
|
/* character already queued */
|
|
/* FIXME: which error would Windows return? */
|
|
ptr->commerror = CE_TXFULL;
|
|
return -1;
|
|
}
|
|
|
|
if (ptr->obuf_head == ptr->obuf_tail) {
|
|
/* transmit queue empty, try to transmit directly */
|
|
if(1!=COMM16_WriteFile(ptr->handle, &chTransmit, 1))
|
|
{
|
|
/* didn't work, queue it */
|
|
ptr->xmit = chTransmit;
|
|
comm_waitwrite(ptr);
|
|
}
|
|
} else {
|
|
/* data in queue, let this char be transmitted next */
|
|
ptr->xmit = chTransmit;
|
|
comm_waitwrite(ptr);
|
|
}
|
|
|
|
ptr->commerror = 0;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* UngetCommChar (USER.212)
|
|
*/
|
|
INT16 WINAPI UngetCommChar16(INT16 cid,CHAR chUnget)
|
|
{
|
|
struct DosDeviceStruct *ptr;
|
|
|
|
TRACE("cid %d (char %d)\n", cid, chUnget);
|
|
if ((ptr = GetDeviceStruct(cid)) == NULL) {
|
|
FIXME("no handle for cid = %0x!\n",cid);
|
|
return -1;
|
|
}
|
|
|
|
if (ptr->suspended) {
|
|
ptr->commerror = IE_HARDWARE;
|
|
return -1;
|
|
}
|
|
|
|
if (ptr->unget>=0) {
|
|
/* character already queued */
|
|
/* FIXME: which error would Windows return? */
|
|
ptr->commerror = CE_RXOVER;
|
|
return -1;
|
|
}
|
|
|
|
ptr->unget = chUnget;
|
|
|
|
ptr->commerror = 0;
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* ReadComm (USER.204)
|
|
*/
|
|
INT16 WINAPI ReadComm16(INT16 cid,LPSTR lpvBuf,INT16 cbRead)
|
|
{
|
|
int status, length;
|
|
struct DosDeviceStruct *ptr;
|
|
LPSTR orgBuf = lpvBuf;
|
|
|
|
TRACE("cid %d, ptr %p, length %d\n", cid, lpvBuf, cbRead);
|
|
if ((ptr = GetDeviceStruct(cid)) == NULL) {
|
|
FIXME("no handle for cid = %0x!\n",cid);
|
|
return -1;
|
|
}
|
|
|
|
if (ptr->suspended) {
|
|
ptr->commerror = IE_HARDWARE;
|
|
return -1;
|
|
}
|
|
|
|
if(0==comm_inbuf(ptr))
|
|
SleepEx(1,TRUE);
|
|
|
|
/* read unget character */
|
|
if (ptr->unget>=0) {
|
|
*lpvBuf++ = ptr->unget;
|
|
ptr->unget = -1;
|
|
|
|
length = 1;
|
|
} else
|
|
length = 0;
|
|
|
|
/* read from receive buffer */
|
|
while (length < cbRead) {
|
|
status = ((ptr->ibuf_head < ptr->ibuf_tail) ?
|
|
ptr->ibuf_size : ptr->ibuf_head) - ptr->ibuf_tail;
|
|
if (!status) break;
|
|
if ((cbRead - length) < status)
|
|
status = cbRead - length;
|
|
|
|
memcpy(lpvBuf, ptr->inbuf + ptr->ibuf_tail, status);
|
|
ptr->ibuf_tail += status;
|
|
if (ptr->ibuf_tail >= ptr->ibuf_size)
|
|
ptr->ibuf_tail = 0;
|
|
lpvBuf += status;
|
|
length += status;
|
|
}
|
|
|
|
TRACE("%s\n", debugstr_an( orgBuf, length ));
|
|
ptr->commerror = 0;
|
|
return length;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
* WriteComm (USER.205)
|
|
*/
|
|
INT16 WINAPI WriteComm16(INT16 cid, LPSTR lpvBuf, INT16 cbWrite)
|
|
{
|
|
int status, length;
|
|
struct DosDeviceStruct *ptr;
|
|
|
|
TRACE("cid %d, ptr %p, length %d\n",
|
|
cid, lpvBuf, cbWrite);
|
|
if ((ptr = GetDeviceStruct(cid)) == NULL) {
|
|
FIXME("no handle for cid = %0x!\n",cid);
|
|
return -1;
|
|
}
|
|
|
|
if (ptr->suspended) {
|
|
ptr->commerror = IE_HARDWARE;
|
|
return -1;
|
|
}
|
|
|
|
TRACE("%s\n", debugstr_an( lpvBuf, cbWrite ));
|
|
|
|
length = 0;
|
|
while (length < cbWrite) {
|
|
if ((ptr->obuf_head == ptr->obuf_tail) && (ptr->xmit < 0)) {
|
|
/* no data queued, try to write directly */
|
|
status = COMM16_WriteFile(ptr->handle, lpvBuf, cbWrite - length);
|
|
if (status > 0) {
|
|
lpvBuf += status;
|
|
length += status;
|
|
continue;
|
|
}
|
|
}
|
|
/* can't write directly, put into transmit buffer */
|
|
status = ((ptr->obuf_tail > ptr->obuf_head) ?
|
|
(ptr->obuf_tail-1) : ptr->obuf_size) - ptr->obuf_head;
|
|
if (!status) break;
|
|
if ((cbWrite - length) < status)
|
|
status = cbWrite - length;
|
|
memcpy(lpvBuf, ptr->outbuf + ptr->obuf_head, status);
|
|
ptr->obuf_head += status;
|
|
if (ptr->obuf_head >= ptr->obuf_size)
|
|
ptr->obuf_head = 0;
|
|
lpvBuf += status;
|
|
length += status;
|
|
comm_waitwrite(ptr);
|
|
}
|
|
|
|
ptr->commerror = 0;
|
|
return length;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* EnableCommNotification (USER.245)
|
|
*/
|
|
BOOL16 WINAPI EnableCommNotification16( INT16 cid, HWND16 hwnd,
|
|
INT16 cbWriteNotify, INT16 cbOutQueue )
|
|
{
|
|
struct DosDeviceStruct *ptr;
|
|
|
|
TRACE("(%d, %x, %d, %d)\n", cid, hwnd, cbWriteNotify, cbOutQueue);
|
|
if ((ptr = GetDeviceStruct(cid)) == NULL) {
|
|
FIXME("no handle for cid = %0x!\n",cid);
|
|
return -1;
|
|
}
|
|
ptr->wnd = WIN_Handle32( hwnd );
|
|
ptr->n_read = cbWriteNotify;
|
|
ptr->n_write = cbOutQueue;
|
|
return TRUE;
|
|
}
|