[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 SERIAL_PREFIX "/dev/tty"
#define SERPORT1   "/dev/ttya"
#define SERPORT2   "/dev/ttyb"
#define PARPORT1   "/dev/bpp0"
#define PARPORT2   "/dev/bpp1"
#endif

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

#ifdef __linux__
#define SERIAL_PREFIX "/dev/ttyS"
#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 SERIAL_PREFIX "/dev/cuaa"
#define SERPORT1   "/dev/cuaa0"
#define SERPORT2   "/dev/cuaa1"
#define PARPORT1   "/dev/lpt0"
#define PARPORT2   "/dev/lpt1"
#endif


#if defined(_WIN32) || defined (__CYGWIN32__) 
#define SERIAL_PREFIX "com"
#define SERPORT1   "com1"
#define SERPORT2   "com2"
#define PARPORT1   "lpt1"
#define PARPORT2   "lpt2"
#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))
      {
	int s;

	s = read(serpfd, buf, n);
	if (s < 0)
	  perror("read:");
	return s;
      }
    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
0d06e24b	71	#define SERIAL_PREFIX "/dev/tty"
c906108c SS	72	#define SERPORT1 "/dev/ttya"
	73	#define SERPORT2 "/dev/ttyb"
	74	#define PARPORT1 "/dev/bpp0"
	75	#define PARPORT2 "/dev/bpp1"
	76	#endif
	77
	78	#ifdef __hpux
0d06e24b	79	#define SERIAL_PREFIX "/dev/tty"
c906108c SS	80	#define SERPORT1 "/dev/tty00"
	81	#define SERPORT2 "/dev/tty01"
	82	#define PARPORT1 "/dev/ptr_parallel"
	83	#define PARPORT2 "/dev/ptr_parallel"
	84	#endif
	85
	86	#ifdef __linux__
0d06e24b	87	#define SERIAL_PREFIX "/dev/ttyS"
adf40b2e JM	88	#define SERPORT1 "/dev/ttyS0"
adf40b2e JM	89	#define SERPORT2 "/dev/ttyS1"
c906108c SS	90	#define PARPORT1 "/dev/par0"
	91	#define PARPORT2 "/dev/par1"
	92	#endif
	93
	94	#if defined (__FreeBSD__) \|\| defined (__NetBSD__) \|\| defined (__OpenBSD__) \|\| defined (bsdi)
0d06e24b	95	#define SERIAL_PREFIX "/dev/cuaa"
c906108c SS	96	#define SERPORT1 "/dev/cuaa0"
	97	#define SERPORT2 "/dev/cuaa1"
	98	#define PARPORT1 "/dev/lpt0"
	99	#define PARPORT2 "/dev/lpt1"
	100	#endif
	101
	102
c906108c	103	#if defined(_WIN32) \|\| defined (__CYGWIN32__)
0d06e24b	104	#define SERIAL_PREFIX "com"
c906108c SS	105	#define SERPORT1 "com1"
	106	#define SERPORT2 "com2"
	107	#define PARPORT1 "lpt1"
	108	#define PARPORT2 "lpt2"
c906108c SS	109	#endif
	110
	111
	112
	113	/*
	114	* Parallel port output pins, used for signalling to target
	115	*/
	116
	117	#ifdef sun
	118	struct bpp_pins bp;
	119	#endif
	120
	121	static int serpfd = -1;
	122	static int parpfd = -1;
	123
	124	extern const char Unix_MatchValidSerialDevice(const char name)
	125	{
	126	int i=0;
	127	char *sername=NULL;
	128
	129	/* Accept no name as the default serial port */
	130	if (name == NULL) {
	131	return SERPORT1;
	132	}
	133
	134	/* Look for the simple cases - 1,2,s,S,/dev/... first, and
	135	* afterwards look for S=... clauses, which need parsing properly.
	136	*/
	137
	138	/* Accept /dev/tty* where * is limited */
	139	if (strlen(name) == strlen(SERPORT1)
	140	&& strncmp(name, SERIAL_PREFIX, strlen (SERIAL_PREFIX)) == 0)
	141	{
	142	return name;
	143	}
	144
	145	/* Accept "1" or "2" or "S" - S is equivalent to "1" */
	146	if (strcmp(name, "1") == 0 \|\|
	147	strcmp(name, "S") == 0 \|\| strcmp(name, "s") == 0) {
	148	return SERPORT1;
	149	}
	150	if (strcmp(name, "2") == 0) return SERPORT2;
	151
	152	/* It wasn't one of the simple cases, so now we have to parse it
	153	* properly
	154	*/
	155
	156	do {
	157	switch (name[i]) {
	158	case ',':
	159	/* Skip over commas */
	160	i++;
	161	break;
	162
	163	default:
	164	return 0;
	165	/* Unexpected character => error - not matched */
	166
	167	case 0:
	168	/* End of string means return whatever we have matched */
	169	return sername;
	170
	171	case 's':
	172	case 'S':
173	case 'h':
174	case 'H': {
175	char ch = tolower(name[i]);
176	int j, continue_from, len;
177
178	/* If the next character is a comma or a NULL then this is
179	* a request for the default Serial port
180	*/
181	if (name[++i] == 0 \|\| name[i] == ',') {
182	if (ch=='s')
183	sername=SERPORT1;
184	break;
185	}
186
187	/* Next character must be an = */
188	if (name[i] != '=') return 0;
189	/* Search for the end of the port spec. (ends in NULL or ,) */
190	for (j= ++i; name[j] != 0 && name[j] != ','; j++)
191	; /* Do nothing */
192	/* Notice whether this is the last thing to parse or not
193	* and also calaculate the length of the string
194	*/
195	if (name[j] == '0') continue_from = -1;
196	else continue_from = j;
197	len=(j-i);
198
199	/* And now try to match the serial / parallel port */
200	switch (ch) {
201	case 's': {
202	/* Match serial port */
203	if (len==1) {
204	if (name[i]=='1')
205	sername=SERPORT1;
206	else if (name[i]=='2')
207	sername=SERPORT2;
208	} else if (len==strlen(SERPORT1)) {
209	if (strncmp(name+i,SERPORT1,strlen(SERPORT1)) == 0)
210	sername=SERPORT1;
211	else if (strncmp(name+i,SERPORT2,strlen(SERPORT2)) == 0)
212	sername=SERPORT2;
213	}
214
215	break;
216	}
217
218	case 'h':
219	/* We don't actually deal with the H case here, we just
220	* match it and allow it through.
221	*/
222	break;
223	}
224
225	if (continue_from == -1) return sername;
226	i = continue_from;
227	break;
228	}
229	}
230	} while (1);
231
232	return 0;
233	}
234
235
236	extern int Unix_IsSerialInUse(void)
237	{
238	if (serpfd >= 0)
239	return -1;
240
241	return 0;
242	}
243
244	extern int Unix_OpenSerial(const char *name)
245	{
246	#if defined(BSD) \|\| defined(__CYGWIN32__)
247	serpfd = open(name, O_RDWR);
248	#else
249	serpfd = open(name, O_RDWR \| O_NONBLOCK);
250	#endif
251
252	if (serpfd < 0) {
253	perror("open");
254	return -1;
255	}
256
257	return 0;
258	}
259
260	extern void Unix_CloseSerial(void)
261	{
262	if (serpfd >= 0)
263	{
264	(void)close(serpfd);
265	serpfd = -1;
266	}
267	}
268
269	extern int Unix_ReadSerial(unsigned char *buf, int n, bool block)
270	{
271	fd_set fdset;
272	struct timeval tv;
273	int err;
274
275	FD_ZERO(&fdset);
276	FD_SET(serpfd, &fdset);
277
278	tv.tv_sec = 0;
279	tv.tv_usec = (block ? 10000 : 0);
280
281	err = select(serpfd + 1, &fdset, NULL, NULL, &tv);
282
283	if (err < 0 && errno != EINTR)
284	{
285	#ifdef DEBUG
286	perror("select");
287	#endif
288	panic("select failure");
289	return -1;
290	}
291	else if (err > 0 && FD_ISSET(serpfd, &fdset))
5c44784c JM	292	{
	293	int s;
	294
	295	s = read(serpfd, buf, n);
	296	if (s < 0)
	297	perror("read:");
	298	return s;
	299	}
c906108c SS	300	else /* err == 0 \|\| FD_CLR(serpfd, &fdset) */
	301	{
	302	errno = ERRNO_FOR_BLOCKED_IO;
	303	return -1;
	304	}
	305	}
	306
	307	extern int Unix_WriteSerial(unsigned char *buf, int n)
	308	{
	309	return write(serpfd, buf, n);
	310	}
	311
	312	extern void Unix_ResetSerial(void)
	313	{
	314	struct termios terminfo;
	315
	316	tcgetattr(serpfd, &terminfo);
c906108c SS	317	terminfo.c_lflag &= ~(ICANON \| ISIG \| ECHO \| IEXTEN);
	318	terminfo.c_iflag &= ~(IGNCR \| INPCK \| ISTRIP \| ICRNL \| BRKINT);
	319	terminfo.c_iflag \|= (IXON \| IXOFF \| IGNBRK);
	320	terminfo.c_cflag = (terminfo.c_cflag & ~CSIZE) \| CS8 \| CREAD;
	321	terminfo.c_cflag &= ~PARENB;
	322	terminfo.c_cc[VMIN] = 1;
	323	terminfo.c_cc[VTIME] = 0;
	324	terminfo.c_oflag &= ~OPOST;
c906108c SS	325	tcsetattr(serpfd, TCSAFLUSH, &terminfo);
	326	}
	327
	328	extern void Unix_SetSerialBaudRate(int baudrate)
	329	{
	330	struct termios terminfo;
	331
	332	tcgetattr(serpfd, &terminfo);
	333	cfsetospeed(&terminfo, baudrate);
	334	cfsetispeed(&terminfo, baudrate);
	335	tcsetattr(serpfd, TCSAFLUSH, &terminfo);
	336	}
	337
	338	extern void Unix_ioctlNonBlocking(void)
	339	{
	340	#if defined(BSD)
	341	int nonblockingIO = 1;
	342	(void)ioctl(serpfd, FIONBIO, &nonblockingIO);
	343
	344	if (parpfd != -1)
	345	(void)ioctl(parpfd, FIONBIO, &nonblockingIO);
	346	#endif
	347	}
	348
	349	extern void Unix_IsValidParallelDevice(
	350	const char portstring, char sername, char *parname)
	351	{
	352	int i=0;
	353	*sername=NULL;
	354	*parname=NULL;
	355
	356	/* Do not recognise a NULL portstring */
	357	if (portstring==NULL) return;
	358
	359	do {
	360	switch (portstring[i]) {
	361	case ',':
	362	/* Skip over commas */
	363	i++;
	364	break;
	365
	366	default:
	367	case 0:
	368	/* End of string or bad characcter means we have finished */
	369	return;
	370
	371	case 's':
	372	case 'S':
	373	case 'p':
	374	case 'P':
	375	case 'h':
	376	case 'H': {
	377	char ch = tolower(portstring[i]);
	378	int j, continue_from, len;
	379
	380	/* If the next character is a comma or a NULL then this is
	381	* a request for the default Serial or Parallel port
	382	*/
	383	if (portstring[++i] == 0 \|\| portstring[i] == ',') {
	384	if (ch=='s') *sername=SERPORT1;
	385	else if (ch=='p') *parname=PARPORT1;
	386	break;
	387	}
	388
389	/* Next character must be an = */
390	if (portstring[i] != '=') return;
391	/* Search for the end of the port spec. (ends in NULL or ,) */
392	for (j= ++i; portstring[j] != 0 && portstring[j] != ','; j++)
393	; /* Do nothing */
394	/* Notice whether this is the last thing to parse or not
395	* and also calaculate the length of the string
396	*/
397	if (portstring[j] == '0') continue_from = -1;
398	else continue_from = j;
399	len=(j-i);
400
401	/* And now try to match the serial / parallel port */
402	switch (ch) {
403	case 's': {
404	/* Match serial port */
405	if (len==1) {
406	if (portstring[i]=='1') *sername=SERPORT1;
407	else if (portstring[i]=='2') *sername=SERPORT2;
408	} else if (len==strlen(SERPORT1)) {
409	if (strncmp(portstring+i,SERPORT1,strlen(SERPORT1)) == 0)
410	*sername=SERPORT1;
411	else if (strncmp(portstring+i,SERPORT2,strlen(SERPORT2)) == 0)
412	*sername=SERPORT2;
413	}
414	break;
415	}
416
417	case 'p': {
418	/* Match parallel port */
419	if (len==1) {
420	if (portstring[i]=='1') *parname=PARPORT1;
421	else if (portstring[i]=='2') *parname=PARPORT2;
422	} else if (len==strlen(PARPORT1)) {
423	if (strncmp(portstring+i,PARPORT1,strlen(PARPORT1)) == 0)
424	*parname=PARPORT1;
425	else if (strncmp(portstring+i,PARPORT2,strlen(PARPORT2)) == 0)
426	*parname=PARPORT2;
427	}
428	break;
429	}
430
431	case 'h':
432	/* We don't actually deal with the H case here, we just
433	* match it and allow it through.
434	*/
435	break;
436	}
437
438	if (continue_from == -1) return;
439	i = continue_from;
440	break;
441	}
442	}
443	} while (1);
444	return; /* Will never get here */
445	}
446
447	extern int Unix_IsParallelInUse(void)
448	{
449	if (parpfd >= 0)
450	return -1;
451
452	return 0;
453	}
454
455	extern int Unix_OpenParallel(const char *name)
456	{
457	#if defined(BSD)
458	parpfd = open(name, O_RDWR);
459	#else
460	parpfd = open(name, O_RDWR \| O_NONBLOCK);
461	#endif
462
463	if (parpfd < 0)
464	{
465	char errbuf[256];
466
467	sprintf(errbuf, "open %s", name);
468	perror(errbuf);
469
470	return -1;
471	}
472
473	return 0;
474	}
475
476	extern void Unix_CloseParallel(void)
477	{
478	if (parpfd >= 0)
479	{
480	(void)close(parpfd);
481	parpfd = -1;
482	}
483	}
484
485
486	extern unsigned int Unix_WriteParallel(unsigned char *buf, int n)
487	{
488	int ngone;
489
490	if ((ngone = write(parpfd, buf, n)) < 0)
491	{
492	/*
493	* we ignore errors (except for debug purposes)
494	*/
495	#ifdef DEBUG
496	char errbuf[256];
497
498	sprintf(errbuf, "send_packet: write");
499	perror(errbuf);
500	#endif
501	ngone = 0;
502	}
503
504	/* finished */
505	return (unsigned int)ngone;
506	}
507
508
509	#ifdef sun
510	extern void Unix_ResetParallel(void)
511	{
512	struct bpp_transfer_parms tp;
513
514	#ifdef DEBUG
515	printf("serpar_reset\n");
516	#endif
517
518	/*
519	* we need to set the parallel port up for BUSY handshaking,
520	* and select the timeout
521	*/
522	if (ioctl(parpfd, BPPIOC_GETPARMS, &tp) < 0)
523	{
524	#ifdef DEBUG
525	perror("ioctl(BPPIOCGETPARMS)");
526	#endif
527	panic("serpar_reset: cannot get BPP parameters");
528	}
529
530	tp.write_handshake = BPP_BUSY_HS;
531	tp.write_timeout = PP_TIMEOUT;
532
533	if (ioctl(parpfd, BPPIOC_SETPARMS, &tp) < 0)
534	{
535	#ifdef DEBUG
536	perror("ioctl(BPPIOC_SETPARMS)");
537	#endif
538	panic("serpar_reset: cannot set BPP parameters");
539	}
540	}
541
542	#else
543
544	/* Parallel not supported on HP */
545
546	extern void Unix_ResetParallel(void)
547	{
548	}
549
550	#endif
551