534 lines
12 KiB
C
534 lines
12 KiB
C
/*
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* Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved.
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*
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* This software may be freely used, copied, modified, and distributed
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* provided that the above copyright notice is preserved in all copies of the
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* software.
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*/
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/* -*-C-*-
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*
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*
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*/
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#ifdef __hpux
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# define _POSIX_SOURCE 1
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#endif
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#include <stdio.h>
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#include <unistd.h>
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#include <ctype.h>
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#ifdef __hpux
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# define _TERMIOS_INCLUDED
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# include <sys/termio.h>
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# undef _TERMIOS_INCLUDED
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#else
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# include <termios.h>
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#endif
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#include <string.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#ifdef sun
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# include <sys/ioccom.h>
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# ifdef __svr4__
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# include <sys/bpp_io.h>
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# else
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# include <sbusdev/bpp_io.h>
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# endif
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#endif
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#ifdef BSD
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# ifdef sun
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# include <sys/ttydev.h>
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# endif
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# ifdef __alpha
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# include <sys/ioctl.h>
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# else
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# include <sys/filio.h>
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# endif
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#endif
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#ifdef __hpux
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# define _INCLUDE_HPUX_SOURCE
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# include <sys/ioctl.h>
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# undef _INCLUDE_HPUX_SOURCE
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#endif
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#include "host.h"
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#include "unixcomm.h"
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#define PP_TIMEOUT 1 /* seconds */
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#ifdef sun
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#define SERPORT1 "/dev/ttya"
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#define SERPORT2 "/dev/ttyb"
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#define PARPORT1 "/dev/bpp0"
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#define PARPORT2 "/dev/bpp1"
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#endif
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#ifdef __hpux
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#define SERPORT1 "/dev/tty00"
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#define SERPORT2 "/dev/tty01"
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#define PARPORT1 "/dev/ptr_parallel"
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#define PARPORT2 "/dev/ptr_parallel"
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#endif
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#ifdef __linux__
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#define SERPORT1 "/dev/cua0"
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#define SERPORT2 "/dev/cua1"
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#define PARPORT1 "/dev/par0"
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#define PARPORT2 "/dev/par1"
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#endif
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#ifdef _WIN32
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#define SERPORT1 "com1"
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#define SERPORT2 "com2"
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#define PARPORT1 "lpt1"
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#define PARPORT2 "lpt2"
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#endif
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/*
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* Parallel port output pins, used for signalling to target
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*/
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#ifdef sun
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struct bpp_pins bp;
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#endif
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static int serpfd = -1;
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static int parpfd = -1;
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extern const char *Unix_MatchValidSerialDevice(const char *name)
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{
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int i=0;
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char *sername=NULL;
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/* Accept no name as the default serial port */
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if (name == NULL) {
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return SERPORT1;
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}
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/* Look for the simple cases - 1,2,s,S,/dev/... first, and
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* afterwards look for S=... clauses, which need parsing properly.
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*/
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/* Accept /dev/tty* where * is limited */
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if (strlen(name) == strlen(SERPORT1) && strncmp(name, "/dev/tty", 8) == 0) return name;
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/* Accept "1" or "2" or "S" - S is equivalent to "1" */
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if (strcmp(name, "1") == 0 ||
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strcmp(name, "S") == 0 || strcmp(name, "s") == 0) {
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return SERPORT1;
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}
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if (strcmp(name, "2") == 0) return SERPORT2;
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/* It wasn't one of the simple cases, so now we have to parse it
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* properly
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*/
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do {
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switch (name[i]) {
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case ',':
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/* Skip over commas */
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i++;
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break;
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default:
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return 0;
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/* Unexpected character => error - not matched */
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case 0:
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/* End of string means return whatever we have matched */
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return sername;
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case 's':
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case 'S':
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case 'h':
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case 'H': {
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char ch = tolower(name[i]);
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int j, continue_from, len;
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/* If the next character is a comma or a NULL then this is
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* a request for the default Serial port
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*/
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if (name[++i] == 0 || name[i] == ',') {
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if (ch=='s')
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sername=SERPORT1;
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break;
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}
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/* Next character must be an = */
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if (name[i] != '=') return 0;
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/* Search for the end of the port spec. (ends in NULL or ,) */
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for (j= ++i; name[j] != 0 && name[j] != ','; j++)
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; /* Do nothing */
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/* Notice whether this is the last thing to parse or not
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* and also calaculate the length of the string
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*/
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if (name[j] == '0') continue_from = -1;
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else continue_from = j;
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len=(j-i);
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/* And now try to match the serial / parallel port */
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switch (ch) {
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case 's': {
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/* Match serial port */
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if (len==1) {
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if (name[i]=='1')
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sername=SERPORT1;
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else if (name[i]=='2')
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sername=SERPORT2;
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} else if (len==strlen(SERPORT1)) {
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if (strncmp(name+i,SERPORT1,strlen(SERPORT1)) == 0)
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sername=SERPORT1;
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else if (strncmp(name+i,SERPORT2,strlen(SERPORT2)) == 0)
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sername=SERPORT2;
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}
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break;
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}
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case 'h':
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/* We don't actually deal with the H case here, we just
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* match it and allow it through.
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*/
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break;
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}
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if (continue_from == -1) return sername;
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i = continue_from;
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break;
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}
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}
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} while (1);
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return 0;
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}
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extern int Unix_IsSerialInUse(void)
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{
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if (serpfd >= 0)
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return -1;
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return 0;
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}
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extern int Unix_OpenSerial(const char *name)
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{
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#if defined(BSD)
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serpfd = open(name, O_RDWR);
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#else
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serpfd = open(name, O_RDWR | O_NONBLOCK);
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#endif
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if (serpfd < 0) {
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perror("open");
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return -1;
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}
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return 0;
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}
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extern void Unix_CloseSerial(void)
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{
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if (serpfd >= 0)
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{
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(void)close(serpfd);
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serpfd = -1;
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}
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}
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extern int Unix_ReadSerial(unsigned char *buf, int n, bool block)
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{
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fd_set fdset;
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struct timeval tv;
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int err;
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FD_ZERO(&fdset);
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FD_SET(serpfd, &fdset);
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tv.tv_sec = 0;
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tv.tv_usec = (block ? 10000 : 0);
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err = select(serpfd + 1, &fdset, NULL, NULL, &tv);
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if (err < 0 && errno != EINTR)
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{
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#ifdef DEBUG
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perror("select");
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#endif
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panic("select failure");
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return -1;
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}
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else if (err > 0 && FD_ISSET(serpfd, &fdset))
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return read(serpfd, buf, n);
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else /* err == 0 || FD_CLR(serpfd, &fdset) */
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{
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errno = ERRNO_FOR_BLOCKED_IO;
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return -1;
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}
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}
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extern int Unix_WriteSerial(unsigned char *buf, int n)
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{
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return write(serpfd, buf, n);
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}
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extern void Unix_ResetSerial(void)
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{
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struct termios terminfo;
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tcgetattr(serpfd, &terminfo);
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#ifdef __CYGWIN32__
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/* Expedient, but it works. */
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terminfo.c_iflag = 0;
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terminfo.c_oflag = 0;
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terminfo.c_cflag = 48;
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terminfo.c_lflag = 0;
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terminfo.c_cc[VMIN] = 0;
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terminfo.c_cc[VTIME] = 1;
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#else
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terminfo.c_lflag &= ~(ICANON | ISIG | ECHO | IEXTEN);
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terminfo.c_iflag &= ~(IGNCR | INPCK | ISTRIP | ICRNL | BRKINT);
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terminfo.c_iflag |= (IXON | IXOFF | IGNBRK);
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terminfo.c_cflag = (terminfo.c_cflag & ~CSIZE) | CS8 | CREAD;
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terminfo.c_cflag &= ~PARENB;
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terminfo.c_cc[VMIN] = 1;
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terminfo.c_cc[VTIME] = 0;
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terminfo.c_oflag &= ~OPOST;
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#endif
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tcsetattr(serpfd, TCSAFLUSH, &terminfo);
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}
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extern void Unix_SetSerialBaudRate(int baudrate)
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{
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struct termios terminfo;
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tcgetattr(serpfd, &terminfo);
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cfsetospeed(&terminfo, baudrate);
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cfsetispeed(&terminfo, baudrate);
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tcsetattr(serpfd, TCSAFLUSH, &terminfo);
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}
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extern void Unix_ioctlNonBlocking(void)
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{
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#if defined(BSD)
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int nonblockingIO = 1;
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(void)ioctl(serpfd, FIONBIO, &nonblockingIO);
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if (parpfd != -1)
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(void)ioctl(parpfd, FIONBIO, &nonblockingIO);
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#endif
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}
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extern void Unix_IsValidParallelDevice(
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const char *portstring, char **sername, char **parname)
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{
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int i=0;
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*sername=NULL;
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*parname=NULL;
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/* Do not recognise a NULL portstring */
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if (portstring==NULL) return;
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do {
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switch (portstring[i]) {
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case ',':
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/* Skip over commas */
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i++;
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break;
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default:
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case 0:
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/* End of string or bad characcter means we have finished */
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return;
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case 's':
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case 'S':
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case 'p':
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case 'P':
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case 'h':
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case 'H': {
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char ch = tolower(portstring[i]);
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int j, continue_from, len;
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/* If the next character is a comma or a NULL then this is
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* a request for the default Serial or Parallel port
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*/
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if (portstring[++i] == 0 || portstring[i] == ',') {
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if (ch=='s') *sername=SERPORT1;
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else if (ch=='p') *parname=PARPORT1;
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break;
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}
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/* Next character must be an = */
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if (portstring[i] != '=') return;
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/* Search for the end of the port spec. (ends in NULL or ,) */
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for (j= ++i; portstring[j] != 0 && portstring[j] != ','; j++)
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; /* Do nothing */
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/* Notice whether this is the last thing to parse or not
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* and also calaculate the length of the string
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*/
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if (portstring[j] == '0') continue_from = -1;
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else continue_from = j;
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len=(j-i);
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/* And now try to match the serial / parallel port */
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switch (ch) {
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case 's': {
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/* Match serial port */
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if (len==1) {
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if (portstring[i]=='1') *sername=SERPORT1;
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else if (portstring[i]=='2') *sername=SERPORT2;
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} else if (len==strlen(SERPORT1)) {
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if (strncmp(portstring+i,SERPORT1,strlen(SERPORT1)) == 0)
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*sername=SERPORT1;
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else if (strncmp(portstring+i,SERPORT2,strlen(SERPORT2)) == 0)
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*sername=SERPORT2;
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}
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break;
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}
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case 'p': {
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/* Match parallel port */
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if (len==1) {
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if (portstring[i]=='1') *parname=PARPORT1;
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else if (portstring[i]=='2') *parname=PARPORT2;
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} else if (len==strlen(PARPORT1)) {
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if (strncmp(portstring+i,PARPORT1,strlen(PARPORT1)) == 0)
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*parname=PARPORT1;
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else if (strncmp(portstring+i,PARPORT2,strlen(PARPORT2)) == 0)
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*parname=PARPORT2;
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}
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break;
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}
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case 'h':
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/* We don't actually deal with the H case here, we just
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* match it and allow it through.
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*/
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break;
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}
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if (continue_from == -1) return;
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i = continue_from;
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break;
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}
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}
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} while (1);
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return; /* Will never get here */
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}
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extern int Unix_IsParallelInUse(void)
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{
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if (parpfd >= 0)
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return -1;
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return 0;
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}
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extern int Unix_OpenParallel(const char *name)
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{
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#if defined(BSD)
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parpfd = open(name, O_RDWR);
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#else
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parpfd = open(name, O_RDWR | O_NONBLOCK);
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#endif
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if (parpfd < 0)
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{
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char errbuf[256];
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sprintf(errbuf, "open %s", name);
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perror(errbuf);
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return -1;
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}
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return 0;
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}
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extern void Unix_CloseParallel(void)
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{
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if (parpfd >= 0)
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{
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(void)close(parpfd);
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parpfd = -1;
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}
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}
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extern unsigned int Unix_WriteParallel(unsigned char *buf, int n)
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{
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int ngone;
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if ((ngone = write(parpfd, buf, n)) < 0)
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{
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/*
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* we ignore errors (except for debug purposes)
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*/
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#ifdef DEBUG
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char errbuf[256];
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sprintf(errbuf, "send_packet: write");
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perror(errbuf);
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#endif
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ngone = 0;
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}
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/* finished */
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return (unsigned int)ngone;
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}
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#ifdef sun
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extern void Unix_ResetParallel(void)
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{
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struct bpp_transfer_parms tp;
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#ifdef DEBUG
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printf("serpar_reset\n");
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#endif
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/*
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* we need to set the parallel port up for BUSY handshaking,
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* and select the timeout
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*/
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if (ioctl(parpfd, BPPIOC_GETPARMS, &tp) < 0)
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{
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#ifdef DEBUG
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perror("ioctl(BPPIOCGETPARMS)");
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#endif
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panic("serpar_reset: cannot get BPP parameters");
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}
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tp.write_handshake = BPP_BUSY_HS;
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tp.write_timeout = PP_TIMEOUT;
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if (ioctl(parpfd, BPPIOC_SETPARMS, &tp) < 0)
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{
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#ifdef DEBUG
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perror("ioctl(BPPIOC_SETPARMS)");
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#endif
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panic("serpar_reset: cannot set BPP parameters");
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}
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}
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#else
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/* Parallel not supported on HP */
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extern void Unix_ResetParallel(void)
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{
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}
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#endif
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