diff options
Diffstat (limited to 'dmascc/dmascc_cfg.c')
| -rw-r--r-- | dmascc/dmascc_cfg.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/dmascc/dmascc_cfg.c b/dmascc/dmascc_cfg.c new file mode 100644 index 0000000..abf7673 --- /dev/null +++ b/dmascc/dmascc_cfg.c @@ -0,0 +1,191 @@ +/* + * $Id: dmascc_cfg.c,v 0.7 1997/12/02 11:31:21 oe1kib Exp $ + * + * Configuration utility for dmascc driver + * Copyright (C) 1997 Klaus Kudielka + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <stdio.h> +#include <errno.h> +#include <string.h> +#include <stdlib.h> +#include <unistd.h> +#include <sys/socket.h> +#include <sys/ioctl.h> +#include <linux/if.h> +#include <linux/dmascc.h> +#include <asm/param.h> + +void usage(char *name) +{ + fprintf(stderr, + "usage: %s <interface> [ options ... ]\n\n" + "options: --show show configuration\n" + " --speed <f> set baud rate\n" + " --nrzi 0 | 1 set NRZ or NRZI encoding\n" + " --clocks <i> set clock mode\n" + " --txdelay <f> set transmit delay in ms\n" + " --txtime <f> set maximum transmit time in s\n" + " --sqdelay <f> set squelch delay in ms\n" + " --slottime <f> set slot time in ms\n" + " --waittime <f> set wait time after transmit in ms\n" + " --persist <i> set persistence parameter\n" + " --dma <i> set DMA channel\n", name); +} + +int main(int argc, char *argv[]) +{ + int sk, show = 0, set = 0, error = 0; + struct ifreq ifr; + struct scc_param param; + char **option, *end; + + if (argc < 2) { + usage(argv[0]); + return 1; + } + + if ((sk = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { + perror("socket"); + return 2; + } + + strncpy(ifr.ifr_name, argv[1], IFNAMSIZ); + ifr.ifr_data = (caddr_t) ¶m; + if (ioctl(sk, SIOCGSCCPARAM, &ifr) < 0) { + perror("ioctl"); + close(sk); + return 3; + } + + option = argv + 2; + while (!error && *option != NULL) { + if (!strcmp(*option, "--show")) { + show = 1; + option++; + } else if (!strcmp(*option, "--speed")) { + option++; + if (*option != NULL) { + double speed; + set = 1; + speed = strtod(*option++, &end); + if (*end) error = 1; else { + if (speed <= 0.0) param.brg_tc = -1; + else param.brg_tc = param.pclk_hz / (speed * 2) - 2; + if (param.brg_tc > 0xffff) param.brg_tc = -1; + } + } else error = 1; + } else if (!strcmp(*option, "--nrzi")) { + option++; + if (*option != NULL) { + set = 1; + param.nrzi = strtol(*option++, &end, 0); + if (*end) error = 1; + } else error = 1; + } else if (!strcmp(*option, "--clocks")) { + option++; + if (*option != NULL) { + set = 1; + param.clocks = strtol(*option++, &end, 0); + if (*end) error = 1; + } else error = 1; + } else if (!strcmp(*option, "--txdelay")) { + option++; + if (*option != NULL) { + set = 1; + param.txdelay = TMR_0_HZ * strtod(*option++, &end) / 1000.0; + if (*end) error = 1; + } else error = 1; + } else if (!strcmp(*option, "--txtime")) { + option++; + if (*option != NULL) { + set = 1; + param.txtime = HZ * strtod(*option++, &end); + if (*end) error = 1; + } else error = 1; + } else if (!strcmp(*option, "--sqdelay")) { + option++; + if (*option != NULL) { + set = 1; + param.sqdelay = TMR_0_HZ * strtod(*option++, &end) / 1000.0; + if (*end) error = 1; + } else error = 1; + } else if (!strcmp(*option, "--slottime")) { + option++; + if (*option != NULL) { + set = 1; + param.slottime = TMR_0_HZ * strtod(*option++, &end) / 1000.0; + if (*end) error = 1; + } else error = 1; + } else if (!strcmp(*option, "--waittime")) { + option++; + if (*option != NULL) { + set = 1; + param.waittime = TMR_0_HZ * strtod(*option++, &end) / 1000.0; + if (*end) error = 1; + } else error = 1; + } else if (!strcmp(*option, "--persist")) { + option++; + if (*option != NULL) { + set = 1; + param.persist = strtol(*option++, &end, 0); + if (*end) error = 1; + } else error = 1; + } else if (!strcmp(*option, "--dma")) { + option++; + if (*option != NULL) { + set = 1; + param.dma = strtol(*option++, &end, 0); + if (*end) error = 1; + } else error = 1; + } else error = 1; + } + + if (error) { + usage(argv[0]); + close(sk); + return 1; + } + + if (set) { + if (ioctl(sk, SIOCSSCCPARAM, &ifr) < 0) { + perror("ioctl"); + close(sk); + return 4; + } + } + + if (show) { + double speed; + if (param.brg_tc < 0) speed = 0.0; + else speed = ((double) param.pclk_hz) / ( 2 * (param.brg_tc + 2)); + printf("speed = %.2f\nnrzi = %d\nclocks = 0x%02X\n" + "txdelay = %.2f ms\ntxtime = %.2f s\nsqdelay = %.2f ms\n" + "slottime = %.2f ms\nwaittime = %.2f ms\npersist = %d\n" + "dma = %d\n", + speed, param.nrzi, param.clocks, + param.txdelay * 1000.0 / TMR_0_HZ, + (double) param.txtime / HZ, + param.sqdelay * 1000.0 / TMR_0_HZ, + param.slottime * 1000.0 / TMR_0_HZ, + param.waittime * 1000.0 / TMR_0_HZ, + param.persist, param.dma); + } + + close(sk); + return 0; +} |