[deliverable/binutils-gdb.git] / gdb / rdi-share / unixcomm.c

/* 
 * Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved.
 * 
 * This software may be freely used, copied, modified, and distributed
 * provided that the above copyright notice is preserved in all copies of the
 * software.
 */

/* -*-C-*-
 *
 * $Revision$
 *     $Date$
 *
 */

#ifdef __hpux
#  define _POSIX_SOURCE 1
#endif

#include <stdio.h>
#include <unistd.h>
#include <ctype.h>

#ifdef __hpux
#  define _TERMIOS_INCLUDED
#  include <sys/termio.h>
#  undef _TERMIOS_INCLUDED
#else
#  include <termios.h>
#endif

#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/time.h>

#ifdef sun
# include <sys/ioccom.h>
# ifdef __svr4__
#  include <sys/bpp_io.h>
# else
#  include <sbusdev/bpp_io.h>
# endif
#endif

#ifdef BSD
# ifdef sun
#  include <sys/ttydev.h>
# endif
# ifdef __alpha 
#  include <sys/ioctl.h>
# else
#  include <sys/filio.h>
# endif
#endif

#ifdef __hpux
#  define _INCLUDE_HPUX_SOURCE
#  include <sys/ioctl.h>
#  undef _INCLUDE_HPUX_SOURCE
#endif

#include "host.h"
#include "unixcomm.h"

#define PP_TIMEOUT      1              /* seconds */

#ifdef sun
#define SERPORT1   "/dev/ttya"
#define SERPORT2   "/dev/ttyb"
#define PARPORT1   "/dev/bpp0"
#define PARPORT2   "/dev/bpp1"
#endif

#ifdef __hpux
#define SERPORT1   "/dev/tty00"
#define SERPORT2   "/dev/tty01"
#define PARPORT1   "/dev/ptr_parallel"
#define PARPORT2   "/dev/ptr_parallel"
#endif

#ifdef __linux__
#define SERPORT1   "/dev/ttyS0"
#define SERPORT2   "/dev/ttyS1"
#define PARPORT1   "/dev/par0"
#define PARPORT2   "/dev/par1"
#endif

#if defined (__FreeBSD__) || defined (__NetBSD__) || defined (__OpenBSD__) || defined (bsdi)
#define SERPORT1   "/dev/cuaa0"
#define SERPORT2   "/dev/cuaa1"
#define PARPORT1   "/dev/lpt0"
#define PARPORT2   "/dev/lpt1"
#endif


#define SERIAL_PREFIX "/dev/tty"
#if defined(_WIN32) || defined (__CYGWIN32__) 
#define SERPORT1   "com1"
#define SERPORT2   "com2"
#define PARPORT1   "lpt1"
#define PARPORT2   "lpt2"
#undef SERIAL_PREFIX
#define SERIAL_PREFIX "com"
#endif


/*
 * Parallel port output pins, used for signalling to target
 */

#ifdef sun
struct bpp_pins bp;
#endif

static int serpfd = -1;
static int parpfd = -1;

extern const char *Unix_MatchValidSerialDevice(const char *name)
{
  int i=0;
  char *sername=NULL;

  /* Accept no name as the default serial port */
  if (name == NULL) {
    return SERPORT1;
  }

  /* Look for the simple cases - 1,2,s,S,/dev/... first, and
   * afterwards look for S=... clauses, which need parsing properly.
   */

  /* Accept /dev/tty* where * is limited */
  if (strlen(name) == strlen(SERPORT1)
      && strncmp(name, SERIAL_PREFIX, strlen (SERIAL_PREFIX)) == 0)
      {
        return name;
      }

  /* Accept "1" or "2" or "S" - S is equivalent to "1" */
  if (strcmp(name, "1") == 0 ||
      strcmp(name, "S") == 0 || strcmp(name, "s") == 0) {
    return SERPORT1;
  }
  if (strcmp(name, "2") == 0) return SERPORT2;

  /* It wasn't one of the simple cases, so now we have to parse it
   * properly
   */

  do {
    switch (name[i]) {
      case ',':
        /* Skip over commas */
        i++;
        break;
      
      default:
        return 0;
        /* Unexpected character => error - not matched */

      case 0:
        /* End of string means return whatever we have matched */
        return sername;

      case 's':
      case 'S':
      case 'h':
      case 'H': {
        char ch = tolower(name[i]);
        int j, continue_from, len;
        
        /* If the next character is a comma or a NULL then this is
         * a request for the default Serial port
         */
        if (name[++i] == 0 || name[i] == ',') {
          if (ch=='s') 
              sername=SERPORT1;
          break;
        }

        /* Next character must be an = */
        if (name[i] != '=') return 0;
        /* Search for the end of the port spec. (ends in NULL or ,) */
        for (j= ++i; name[j] != 0 && name[j] != ','; j++)
          ; /* Do nothing */
        /* Notice whether this is the last thing to parse or not
         * and also calaculate the length of the string
         */
        if (name[j] == '0') continue_from = -1;
        else continue_from = j;
        len=(j-i);

        /* And now try to match the serial / parallel port */
        switch (ch) {
          case 's': {
            /* Match serial port */
            if (len==1) {
              if (name[i]=='1') 
                  sername=SERPORT1;
              else if (name[i]=='2') 
                  sername=SERPORT2;
            } else if (len==strlen(SERPORT1)) {
              if (strncmp(name+i,SERPORT1,strlen(SERPORT1)) == 0)
                sername=SERPORT1;
              else if (strncmp(name+i,SERPORT2,strlen(SERPORT2)) == 0)
                sername=SERPORT2;
            }

            break;
          }

          case 'h': 
            /* We don't actually deal with the H case here, we just
             * match it and allow it through.
             */
            break;
        }

        if (continue_from == -1) return sername;
        i = continue_from;
        break;
      }
    }
  } while (1);

  return 0;
}


extern int Unix_IsSerialInUse(void)
{
    if (serpfd >= 0)
        return -1;

    return 0;
}

extern int Unix_OpenSerial(const char *name)
{
#if defined(BSD) || defined(__CYGWIN32__)
    serpfd = open(name, O_RDWR);
#else
    serpfd = open(name, O_RDWR | O_NONBLOCK);
#endif

    if (serpfd < 0) {
        perror("open");
        return -1;
    }

    return 0;
}

extern void Unix_CloseSerial(void)
{
    if (serpfd >= 0)
    {
        (void)close(serpfd);
        serpfd = -1;
    }
}

extern int Unix_ReadSerial(unsigned char *buf, int n, bool block)
{
    fd_set fdset;
    struct timeval tv;
    int err;

    FD_ZERO(&fdset);
    FD_SET(serpfd, &fdset);

    tv.tv_sec = 0;
    tv.tv_usec = (block ? 10000 : 0);

    err = select(serpfd + 1, &fdset, NULL, NULL, &tv);

    if (err < 0 && errno != EINTR)
    {
#ifdef DEBUG
        perror("select");
#endif
        panic("select failure");
        return -1;
    }
    else if (err > 0 && FD_ISSET(serpfd, &fdset))
        return read(serpfd, buf, n);
    else /* err == 0 || FD_CLR(serpfd, &fdset) */
    {
        errno = ERRNO_FOR_BLOCKED_IO;
        return -1;
    }
}

extern int Unix_WriteSerial(unsigned char *buf, int n)
{
    return write(serpfd, buf, n);
}

extern void Unix_ResetSerial(void)
{
    struct termios terminfo;

    tcgetattr(serpfd, &terminfo);
    terminfo.c_lflag &= ~(ICANON | ISIG | ECHO | IEXTEN);
    terminfo.c_iflag &= ~(IGNCR | INPCK | ISTRIP | ICRNL | BRKINT);
    terminfo.c_iflag |= (IXON | IXOFF | IGNBRK);
    terminfo.c_cflag = (terminfo.c_cflag & ~CSIZE) | CS8 | CREAD;
    terminfo.c_cflag &= ~PARENB;
    terminfo.c_cc[VMIN] = 1;
    terminfo.c_cc[VTIME] = 0;
    terminfo.c_oflag &= ~OPOST;
    tcsetattr(serpfd, TCSAFLUSH, &terminfo);
}

extern void Unix_SetSerialBaudRate(int baudrate)
{
    struct termios terminfo;

    tcgetattr(serpfd, &terminfo);
    cfsetospeed(&terminfo, baudrate);
    cfsetispeed(&terminfo, baudrate);
    tcsetattr(serpfd, TCSAFLUSH, &terminfo);
}

extern void Unix_ioctlNonBlocking(void)
{
#if defined(BSD)
    int nonblockingIO = 1;
    (void)ioctl(serpfd, FIONBIO, &nonblockingIO);

    if (parpfd != -1)
        (void)ioctl(parpfd, FIONBIO, &nonblockingIO);
#endif
}

extern void Unix_IsValidParallelDevice(
  const char *portstring, char **sername, char **parname)
{
  int i=0;
  *sername=NULL;
  *parname=NULL;

  /* Do not recognise a NULL portstring */
  if (portstring==NULL) return;

  do {
    switch (portstring[i]) {
      case ',':
        /* Skip over commas */
        i++;
        break;
      
      default:
      case 0:
        /* End of string or bad characcter means we have finished */
        return;

      case 's':
      case 'S':
      case 'p':
      case 'P':
      case 'h':
      case 'H': {
        char ch = tolower(portstring[i]);
        int j, continue_from, len;
        
        /* If the next character is a comma or a NULL then this is
         * a request for the default Serial or Parallel port
         */
        if (portstring[++i] == 0 || portstring[i] == ',') {
          if (ch=='s') *sername=SERPORT1;
          else if (ch=='p') *parname=PARPORT1;
          break;
        }

        /* Next character must be an = */
        if (portstring[i] != '=') return;
        /* Search for the end of the port spec. (ends in NULL or ,) */
        for (j= ++i; portstring[j] != 0 && portstring[j] != ','; j++)
          ; /* Do nothing */
        /* Notice whether this is the last thing to parse or not
         * and also calaculate the length of the string
         */
        if (portstring[j] == '0') continue_from = -1;
        else continue_from = j;
        len=(j-i);

        /* And now try to match the serial / parallel port */
        switch (ch) {
          case 's': {
            /* Match serial port */
            if (len==1) {
              if (portstring[i]=='1') *sername=SERPORT1;
              else if (portstring[i]=='2') *sername=SERPORT2;
            } else if (len==strlen(SERPORT1)) {
              if (strncmp(portstring+i,SERPORT1,strlen(SERPORT1)) == 0)
                *sername=SERPORT1;
              else if (strncmp(portstring+i,SERPORT2,strlen(SERPORT2)) == 0)
                *sername=SERPORT2;
            }
            break;
          }

          case 'p': {
            /* Match parallel port */
            if (len==1) {
              if (portstring[i]=='1') *parname=PARPORT1;
              else if (portstring[i]=='2') *parname=PARPORT2;
            } else if (len==strlen(PARPORT1)) {
              if (strncmp(portstring+i,PARPORT1,strlen(PARPORT1)) == 0)
                *parname=PARPORT1;
              else if (strncmp(portstring+i,PARPORT2,strlen(PARPORT2)) == 0)
                *parname=PARPORT2;
            }
            break;
          }

          case 'h': 
            /* We don't actually deal with the H case here, we just
             * match it and allow it through.
             */
            break;
        }

        if (continue_from == -1) return;
        i = continue_from;
        break;
      }
    }
  } while (1);
  return;  /* Will never get here */
}

extern int Unix_IsParallelInUse(void)
{
    if (parpfd >= 0)
        return -1;

    return 0;
}

extern int Unix_OpenParallel(const char *name)
{
#if defined(BSD)
    parpfd = open(name, O_RDWR);
#else
    parpfd = open(name, O_RDWR | O_NONBLOCK);
#endif

    if (parpfd < 0)
    {
        char errbuf[256];

        sprintf(errbuf, "open %s", name);
        perror(errbuf);

        return -1;
    }

    return 0;
}

extern void Unix_CloseParallel(void)
{
    if (parpfd >= 0)
    {
        (void)close(parpfd);
        parpfd = -1;
    }
}


extern unsigned int Unix_WriteParallel(unsigned char *buf, int n)
{
    int ngone;

    if ((ngone = write(parpfd, buf, n)) < 0)
    {
        /*
         * we ignore errors (except for debug purposes)
         */
#ifdef DEBUG
        char errbuf[256];

        sprintf(errbuf, "send_packet: write");
        perror(errbuf);
#endif
        ngone = 0;
    }

    /* finished */
    return (unsigned int)ngone;
}


#ifdef sun
extern void Unix_ResetParallel(void)
{
    struct bpp_transfer_parms tp;

#ifdef DEBUG
    printf("serpar_reset\n");
#endif

    /*
     * we need to set the parallel port up for BUSY handshaking,
     * and select the timeout
     */
    if (ioctl(parpfd, BPPIOC_GETPARMS, &tp) < 0)
    {
#ifdef DEBUG
        perror("ioctl(BPPIOCGETPARMS)");
#endif
        panic("serpar_reset: cannot get BPP parameters");
    }

    tp.write_handshake = BPP_BUSY_HS;
    tp.write_timeout = PP_TIMEOUT;

    if (ioctl(parpfd, BPPIOC_SETPARMS, &tp) < 0)
    {
#ifdef DEBUG
        perror("ioctl(BPPIOC_SETPARMS)");
#endif
        panic("serpar_reset: cannot set BPP parameters");
    }
}

#else

/* Parallel not supported on HP */

extern void Unix_ResetParallel(void)
{
}

#endif
Commit	Line	Data
c906108c SS	1	/*
	2	* Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved.
	3	*
	4	* This software may be freely used, copied, modified, and distributed
	5	* provided that the above copyright notice is preserved in all copies of the
	6	* software.
	7	*/
	8
	9	/* --C--
	10	*
	11	* $Revision$
	12	* $Date$
	13	*
	14	*/
	15
	16	#ifdef __hpux
	17	# define _POSIX_SOURCE 1
	18	#endif
	19
	20	#include <stdio.h>
	21	#include <unistd.h>
	22	#include <ctype.h>
	23
	24	#ifdef __hpux
	25	# define _TERMIOS_INCLUDED
	26	# include <sys/termio.h>
	27	# undef _TERMIOS_INCLUDED
	28	#else
	29	# include <termios.h>
	30	#endif
	31
	32	#include <string.h>
	33	#include <fcntl.h>
	34	#include <errno.h>
	35	#include <stdarg.h>
	36	#include <sys/types.h>
	37	#include <sys/time.h>
	38
	39	#ifdef sun
	40	# include <sys/ioccom.h>
	41	# ifdef __svr4__
	42	# include <sys/bpp_io.h>
	43	# else
	44	# include <sbusdev/bpp_io.h>
	45	# endif
	46	#endif
	47
	48	#ifdef BSD
	49	# ifdef sun
	50	# include <sys/ttydev.h>
	51	# endif
	52	# ifdef __alpha
	53	# include <sys/ioctl.h>
	54	# else
	55	# include <sys/filio.h>
	56	# endif
	57	#endif
	58
	59	#ifdef __hpux
	60	# define _INCLUDE_HPUX_SOURCE
	61	# include <sys/ioctl.h>
	62	# undef _INCLUDE_HPUX_SOURCE
	63	#endif
	64
65	#include "host.h"
66	#include "unixcomm.h"
67
68	#define PP_TIMEOUT 1 /* seconds */
69
70	#ifdef sun
71	#define SERPORT1 "/dev/ttya"
72	#define SERPORT2 "/dev/ttyb"
73	#define PARPORT1 "/dev/bpp0"
74	#define PARPORT2 "/dev/bpp1"
75	#endif
76
77	#ifdef __hpux
78	#define SERPORT1 "/dev/tty00"
79	#define SERPORT2 "/dev/tty01"
80	#define PARPORT1 "/dev/ptr_parallel"
81	#define PARPORT2 "/dev/ptr_parallel"
82	#endif
83
84	#ifdef __linux__
adf40b2e JM	85	#define SERPORT1 "/dev/ttyS0"
adf40b2e JM	86	#define SERPORT2 "/dev/ttyS1"
c906108c SS	87	#define PARPORT1 "/dev/par0"
	88	#define PARPORT2 "/dev/par1"
	89	#endif
	90
	91	#if defined (__FreeBSD__) \|\| defined (__NetBSD__) \|\| defined (__OpenBSD__) \|\| defined (bsdi)
	92	#define SERPORT1 "/dev/cuaa0"
	93	#define SERPORT2 "/dev/cuaa1"
	94	#define PARPORT1 "/dev/lpt0"
	95	#define PARPORT2 "/dev/lpt1"
	96	#endif
	97
	98
	99	#define SERIAL_PREFIX "/dev/tty"
	100	#if defined(_WIN32) \|\| defined (__CYGWIN32__)
	101	#define SERPORT1 "com1"
	102	#define SERPORT2 "com2"
	103	#define PARPORT1 "lpt1"
	104	#define PARPORT2 "lpt2"
	105	#undef SERIAL_PREFIX
	106	#define SERIAL_PREFIX "com"
	107	#endif
	108
	109
	110
	111	/*
	112	* Parallel port output pins, used for signalling to target
	113	*/
	114
	115	#ifdef sun
	116	struct bpp_pins bp;
	117	#endif
	118
	119	static int serpfd = -1;
	120	static int parpfd = -1;
	121
	122	extern const char Unix_MatchValidSerialDevice(const char name)
	123	{
	124	int i=0;
	125	char *sername=NULL;
	126
	127	/* Accept no name as the default serial port */
	128	if (name == NULL) {
	129	return SERPORT1;
	130	}
	131
	132	/* Look for the simple cases - 1,2,s,S,/dev/... first, and
	133	* afterwards look for S=... clauses, which need parsing properly.
	134	*/
	135
	136	/* Accept /dev/tty* where * is limited */
	137	if (strlen(name) == strlen(SERPORT1)
	138	&& strncmp(name, SERIAL_PREFIX, strlen (SERIAL_PREFIX)) == 0)
	139	{
	140	return name;
	141	}
	142
	143	/* Accept "1" or "2" or "S" - S is equivalent to "1" */
	144	if (strcmp(name, "1") == 0 \|\|
	145	strcmp(name, "S") == 0 \|\| strcmp(name, "s") == 0) {
	146	return SERPORT1;
	147	}
	148	if (strcmp(name, "2") == 0) return SERPORT2;
	149
	150	/* It wasn't one of the simple cases, so now we have to parse it
151	* properly
152	*/
153
154	do {
155	switch (name[i]) {
156	case ',':
157	/* Skip over commas */
158	i++;
159	break;
160
161	default:
162	return 0;
163	/* Unexpected character => error - not matched */
164
165	case 0:
166	/* End of string means return whatever we have matched */
167	return sername;
168
169	case 's':
170	case 'S':
171	case 'h':
172	case 'H': {
173	char ch = tolower(name[i]);
174	int j, continue_from, len;
175
176	/* If the next character is a comma or a NULL then this is
177	* a request for the default Serial port
178	*/
179	if (name[++i] == 0 \|\| name[i] == ',') {
180	if (ch=='s')
181	sername=SERPORT1;
182	break;
183	}
184
185	/* Next character must be an = */
186	if (name[i] != '=') return 0;
187	/* Search for the end of the port spec. (ends in NULL or ,) */
188	for (j= ++i; name[j] != 0 && name[j] != ','; j++)
189	; /* Do nothing */
190	/* Notice whether this is the last thing to parse or not
191	* and also calaculate the length of the string
192	*/
193	if (name[j] == '0') continue_from = -1;
194	else continue_from = j;
195	len=(j-i);
196
197	/* And now try to match the serial / parallel port */
198	switch (ch) {
199	case 's': {
200	/* Match serial port */
201	if (len==1) {
202	if (name[i]=='1')
203	sername=SERPORT1;
204	else if (name[i]=='2')
205	sername=SERPORT2;
206	} else if (len==strlen(SERPORT1)) {
207	if (strncmp(name+i,SERPORT1,strlen(SERPORT1)) == 0)
208	sername=SERPORT1;
209	else if (strncmp(name+i,SERPORT2,strlen(SERPORT2)) == 0)
210	sername=SERPORT2;
211	}
212
213	break;
214	}
215
216	case 'h':
217	/* We don't actually deal with the H case here, we just
218	* match it and allow it through.
219	*/
220	break;
221	}
222
223	if (continue_from == -1) return sername;
224	i = continue_from;
225	break;
226	}
227	}
228	} while (1);
229
230	return 0;
231	}
232
233
234	extern int Unix_IsSerialInUse(void)
235	{
236	if (serpfd >= 0)
237	return -1;
238
239	return 0;
240	}
241
242	extern int Unix_OpenSerial(const char *name)
243	{
244	#if defined(BSD) \|\| defined(__CYGWIN32__)
245	serpfd = open(name, O_RDWR);
246	#else
247	serpfd = open(name, O_RDWR \| O_NONBLOCK);
248	#endif
249
250	if (serpfd < 0) {
251	perror("open");
252	return -1;
253	}
254
255	return 0;
256	}
257
258	extern void Unix_CloseSerial(void)
259	{
260	if (serpfd >= 0)
261	{
262	(void)close(serpfd);
263	serpfd = -1;
264	}
265	}
266
267	extern int Unix_ReadSerial(unsigned char *buf, int n, bool block)
268	{
269	fd_set fdset;
270	struct timeval tv;
271	int err;
272
273	FD_ZERO(&fdset);
274	FD_SET(serpfd, &fdset);
275
276	tv.tv_sec = 0;
277	tv.tv_usec = (block ? 10000 : 0);
278
279	err = select(serpfd + 1, &fdset, NULL, NULL, &tv);
280
281	if (err < 0 && errno != EINTR)
282	{
283	#ifdef DEBUG
284	perror("select");
285	#endif
286	panic("select failure");
287	return -1;
288	}
289	else if (err > 0 && FD_ISSET(serpfd, &fdset))
290	return read(serpfd, buf, n);
291	else /* err == 0 \|\| FD_CLR(serpfd, &fdset) */
292	{
293	errno = ERRNO_FOR_BLOCKED_IO;
294	return -1;
295	}
296	}
297
298	extern int Unix_WriteSerial(unsigned char *buf, int n)
299	{
300	return write(serpfd, buf, n);
301	}
302
303	extern void Unix_ResetSerial(void)
304	{
305	struct termios terminfo;
306
307	tcgetattr(serpfd, &terminfo);
c906108c SS	308	terminfo.c_lflag &= ~(ICANON \| ISIG \| ECHO \| IEXTEN);
	309	terminfo.c_iflag &= ~(IGNCR \| INPCK \| ISTRIP \| ICRNL \| BRKINT);
	310	terminfo.c_iflag \|= (IXON \| IXOFF \| IGNBRK);
	311	terminfo.c_cflag = (terminfo.c_cflag & ~CSIZE) \| CS8 \| CREAD;
	312	terminfo.c_cflag &= ~PARENB;
	313	terminfo.c_cc[VMIN] = 1;
	314	terminfo.c_cc[VTIME] = 0;
	315	terminfo.c_oflag &= ~OPOST;
c906108c SS	316	tcsetattr(serpfd, TCSAFLUSH, &terminfo);
	317	}
	318
	319	extern void Unix_SetSerialBaudRate(int baudrate)
	320	{
	321	struct termios terminfo;
	322
	323	tcgetattr(serpfd, &terminfo);
	324	cfsetospeed(&terminfo, baudrate);
	325	cfsetispeed(&terminfo, baudrate);
	326	tcsetattr(serpfd, TCSAFLUSH, &terminfo);
	327	}
	328
	329	extern void Unix_ioctlNonBlocking(void)
	330	{
	331	#if defined(BSD)
	332	int nonblockingIO = 1;
	333	(void)ioctl(serpfd, FIONBIO, &nonblockingIO);
	334
	335	if (parpfd != -1)
	336	(void)ioctl(parpfd, FIONBIO, &nonblockingIO);
	337	#endif
	338	}
	339
	340	extern void Unix_IsValidParallelDevice(
	341	const char portstring, char sername, char *parname)
	342	{
	343	int i=0;
	344	*sername=NULL;
	345	*parname=NULL;
	346
	347	/* Do not recognise a NULL portstring */
	348	if (portstring==NULL) return;
	349
	350	do {
	351	switch (portstring[i]) {
	352	case ',':
	353	/* Skip over commas */
	354	i++;
	355	break;
	356
	357	default:
	358	case 0:
	359	/* End of string or bad characcter means we have finished */
	360	return;
	361
	362	case 's':
	363	case 'S':
	364	case 'p':
	365	case 'P':
	366	case 'h':
	367	case 'H': {
	368	char ch = tolower(portstring[i]);
	369	int j, continue_from, len;
	370
	371	/* If the next character is a comma or a NULL then this is
	372	* a request for the default Serial or Parallel port
	373	*/
	374	if (portstring[++i] == 0 \|\| portstring[i] == ',') {
	375	if (ch=='s') *sername=SERPORT1;
	376	else if (ch=='p') *parname=PARPORT1;
	377	break;
	378	}
	379
380	/* Next character must be an = */
381	if (portstring[i] != '=') return;
382	/* Search for the end of the port spec. (ends in NULL or ,) */
383	for (j= ++i; portstring[j] != 0 && portstring[j] != ','; j++)
384	; /* Do nothing */
385	/* Notice whether this is the last thing to parse or not
386	* and also calaculate the length of the string
387	*/
388	if (portstring[j] == '0') continue_from = -1;
389	else continue_from = j;
390	len=(j-i);
391
392	/* And now try to match the serial / parallel port */
393	switch (ch) {
394	case 's': {
395	/* Match serial port */
396	if (len==1) {
397	if (portstring[i]=='1') *sername=SERPORT1;
398	else if (portstring[i]=='2') *sername=SERPORT2;
399	} else if (len==strlen(SERPORT1)) {
400	if (strncmp(portstring+i,SERPORT1,strlen(SERPORT1)) == 0)
401	*sername=SERPORT1;
402	else if (strncmp(portstring+i,SERPORT2,strlen(SERPORT2)) == 0)
403	*sername=SERPORT2;
404	}
405	break;
406	}
407
408	case 'p': {
409	/* Match parallel port */
410	if (len==1) {
411	if (portstring[i]=='1') *parname=PARPORT1;
412	else if (portstring[i]=='2') *parname=PARPORT2;
413	} else if (len==strlen(PARPORT1)) {
414	if (strncmp(portstring+i,PARPORT1,strlen(PARPORT1)) == 0)
415	*parname=PARPORT1;
416	else if (strncmp(portstring+i,PARPORT2,strlen(PARPORT2)) == 0)
417	*parname=PARPORT2;
418	}
419	break;
420	}
421
422	case 'h':
423	/* We don't actually deal with the H case here, we just
424	* match it and allow it through.
425	*/
426	break;
427	}
428
429	if (continue_from == -1) return;
430	i = continue_from;
431	break;
432	}
433	}
434	} while (1);
435	return; /* Will never get here */
436	}
437
438	extern int Unix_IsParallelInUse(void)
439	{
440	if (parpfd >= 0)
441	return -1;
442
443	return 0;
444	}
445
446	extern int Unix_OpenParallel(const char *name)
447	{
448	#if defined(BSD)
449	parpfd = open(name, O_RDWR);
450	#else
451	parpfd = open(name, O_RDWR \| O_NONBLOCK);
452	#endif
453
454	if (parpfd < 0)
455	{
456	char errbuf[256];
457
458	sprintf(errbuf, "open %s", name);
459	perror(errbuf);
460
461	return -1;
462	}
463
464	return 0;
465	}
466
467	extern void Unix_CloseParallel(void)
468	{
469	if (parpfd >= 0)
470	{
471	(void)close(parpfd);
472	parpfd = -1;
473	}
474	}
475
476
477	extern unsigned int Unix_WriteParallel(unsigned char *buf, int n)
478	{
479	int ngone;
480
481	if ((ngone = write(parpfd, buf, n)) < 0)
482	{
483	/*
484	* we ignore errors (except for debug purposes)
485	*/
486	#ifdef DEBUG
487	char errbuf[256];
488
489	sprintf(errbuf, "send_packet: write");
490	perror(errbuf);
491	#endif
492	ngone = 0;
493	}
494
495	/* finished */
496	return (unsigned int)ngone;
497	}
498
499
500	#ifdef sun
501	extern void Unix_ResetParallel(void)
502	{
503	struct bpp_transfer_parms tp;
504
505	#ifdef DEBUG
506	printf("serpar_reset\n");
507	#endif
508
509	/*
510	* we need to set the parallel port up for BUSY handshaking,
511	* and select the timeout
512	*/
513	if (ioctl(parpfd, BPPIOC_GETPARMS, &tp) < 0)
514	{
515	#ifdef DEBUG
516	perror("ioctl(BPPIOCGETPARMS)");
517	#endif
518	panic("serpar_reset: cannot get BPP parameters");
519	}
520
521	tp.write_handshake = BPP_BUSY_HS;
522	tp.write_timeout = PP_TIMEOUT;
523
524	if (ioctl(parpfd, BPPIOC_SETPARMS, &tp) < 0)
525	{
526	#ifdef DEBUG
527	perror("ioctl(BPPIOC_SETPARMS)");
528	#endif
529	panic("serpar_reset: cannot set BPP parameters");
530	}
531	}
532
533	#else
534
535	/* Parallel not supported on HP */
536
537	extern void Unix_ResetParallel(void)
538	{
539	}
540
541	#endif
542