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-rw-r--r--sys-utils/setserial.c436
1 files changed, 436 insertions, 0 deletions
diff --git a/sys-utils/setserial.c b/sys-utils/setserial.c
new file mode 100644
index 000000000..71179baa8
--- /dev/null
+++ b/sys-utils/setserial.c
@@ -0,0 +1,436 @@
+/* setserial.c - get/set Linux serial port info - rick sladkey */
+/* modified to do work again and added setting fast serial speeds,
+ Michael K. Johnson, johnsonm@stolaf.edu */
+/*
+ * Very heavily modified --- almost rewritten from scratch --- to have
+ * a more flexible command structure. Now able to set any of the
+ * serial-specific options using the TIOCSSERIAL ioctl().
+ * Theodore Ts'o, tytso@mit.edu, 1/1/93
+ *
+ * Last modified: [tytso:19940520.0036EDT]
+ */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <string.h>
+#include <errno.h>
+
+#include <linux/fs.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+
+#define VERSION_STR "2.10"
+
+char *progname;
+
+int verbosity = 1; /* 1 = normal, 0=boot-time, 2=everything */
+int verbose_flag = 0; /* print results after setting a port */
+int quiet_flag = 0;
+
+struct serial_type_struct {
+ int id;
+ char *name;
+} serial_type_tbl[] = {
+ PORT_UNKNOWN, "unknown",
+ PORT_8250, "8250",
+ PORT_16450, "16450",
+ PORT_16550, "16550",
+ PORT_16550A, "16550A",
+ PORT_UNKNOWN, "none",
+ -1, NULL
+};
+
+#define CMD_FLAG 1
+#define CMD_PORT 2
+#define CMD_IRQ 3
+#define CMD_DIVISOR 4
+#define CMD_TYPE 5
+#define CMD_BASE 6
+#define CMD_DELAY 7
+#define CMD_CONFIG 8
+
+#define FLAG_CAN_INVERT 0x0001
+#define FLAG_NEED_ARG 0x0002
+
+struct flag_type_table {
+ int cmd;
+ char *name;
+ int bits;
+ int mask;
+ int level;
+ int flags;
+} flag_type_tbl[] = {
+ CMD_FLAG, "spd_normal", 0, ASYNC_SPD_MASK, 2, 0,
+ CMD_FLAG, "spd_hi", ASYNC_SPD_HI, ASYNC_SPD_MASK, 0, 0,
+ CMD_FLAG, "spd_vhi", ASYNC_SPD_VHI, ASYNC_SPD_MASK, 0, 0,
+ CMD_FLAG, "spd_cust", ASYNC_SPD_CUST, ASYNC_SPD_MASK, 0, 0,
+
+ CMD_FLAG, "SAK", ASYNC_SAK, ASYNC_SAK, 0, FLAG_CAN_INVERT,
+ CMD_FLAG, "Fourport", ASYNC_FOURPORT, ASYNC_FOURPORT, 0, FLAG_CAN_INVERT,
+ CMD_FLAG, "hup_notify", ASYNC_HUP_NOTIFY, ASYNC_HUP_NOTIFY, 0, FLAG_CAN_INVERT,
+ CMD_FLAG, "skip_test", ASYNC_SKIP_TEST,ASYNC_SKIP_TEST,2, FLAG_CAN_INVERT,
+ CMD_FLAG, "auto_irq", ASYNC_AUTO_IRQ, ASYNC_AUTO_IRQ, 2, FLAG_CAN_INVERT,
+#ifdef ASYNC_SPLIT_TERMIOS
+ CMD_FLAG, "split_termios", ASYNC_SPLIT_TERMIOS, ASYNC_SPLIT_TERMIOS, 2, FLAG_CAN_INVERT,
+#endif
+ CMD_FLAG, "session_lockout", ASYNC_SESSION_LOCKOUT, ASYNC_SESSION_LOCKOUT, 2, FLAG_CAN_INVERT,
+ CMD_FLAG, "pgrp_lockout", ASYNC_PGRP_LOCKOUT, ASYNC_PGRP_LOCKOUT, 2, FLAG_CAN_INVERT,
+#ifdef ASYNC_CALLOUT_NOHUP
+ CMD_FLAG, "callout_nohup", ASYNC_CALLOUT_NOHUP, ASYNC_CALLOUT_NOHUP, 2, FLAG_CAN_INVERT,
+#endif
+
+ CMD_PORT, "port", 0, 0, 0, FLAG_NEED_ARG,
+ CMD_IRQ, "irq", 0, 0, 0, FLAG_NEED_ARG,
+ CMD_DIVISOR, "divisor", 0, 0, 0, FLAG_NEED_ARG,
+ CMD_TYPE, "uart", 0, 0, 0, FLAG_NEED_ARG,
+ CMD_BASE, "base", 0, 0, 0, FLAG_NEED_ARG,
+ CMD_BASE, "baud_base", 0, 0, 0, FLAG_NEED_ARG,
+ CMD_DELAY, "close_delay", 0, 0, 0, FLAG_NEED_ARG,
+ CMD_CONFIG, "autoconfig", 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0,
+};
+
+char *serial_type(int id)
+{
+ int i;
+
+ for (i = 0; serial_type_tbl[i].id != -1; i++)
+ if (id == serial_type_tbl[i].id)
+ return serial_type_tbl[i].name;
+ return "undefined";
+}
+
+int uart_type(char *name)
+{
+ int i;
+
+ for (i = 0; serial_type_tbl[i].id != -1; i++)
+ if (!strcasecmp(name, serial_type_tbl[i].name))
+ return serial_type_tbl[i].id;
+ return -1;
+}
+
+
+int atonum(char *s)
+{
+ int n;
+
+ while (*s == ' ')
+ s++;
+ if (strncmp(s, "0x", 2) == 0 || strncmp(s, "0X", 2) == 0)
+ sscanf(s + 2, "%x", &n);
+ else if (s[0] == '0' && s[1])
+ sscanf(s + 1, "%o", &n);
+ else
+ sscanf(s, "%d", &n);
+ return n;
+}
+
+void print_flags(struct serial_struct *serinfo,
+ char *prefix, char *postfix)
+{
+ struct flag_type_table *p;
+ int flags;
+ int first = 1;
+
+ flags = serinfo->flags;
+
+ for (p = flag_type_tbl; p->name; p++) {
+ if (p->cmd != CMD_FLAG)
+ continue;
+ if (verbosity < p->level)
+ continue;
+ if ((flags & p->mask) == p->bits) {
+ if (first) {
+ printf("%s", prefix);
+ first = 0;
+ } else
+ printf(" ");
+ printf("%s", p->name);
+ }
+ }
+
+ if (!first)
+ printf("%s", postfix);
+}
+
+void get_serial(char *device)
+{
+ struct serial_struct serinfo;
+ int fd;
+
+ if ((fd = open(device, O_RDWR|O_NONBLOCK)) < 0) {
+ perror(device);
+ return;
+ }
+ if (ioctl(fd, TIOCGSERIAL, &serinfo) < 0) {
+ perror("Cannot get serial info");
+ close(fd);
+ return;
+ }
+ if (serinfo.irq == 9)
+ serinfo.irq = 2; /* People understand 2 better than 9 */
+ if (verbosity==2) {
+ printf("%s, Line %d, UART: %s, Port: 0x%.4x, IRQ: %d\n",
+ device, serinfo.line, serial_type(serinfo.type),
+ serinfo.port, serinfo.irq);
+ printf("\tBaud_base: %d, close_delay: %d, divisor: %d\n",
+ serinfo.baud_base, serinfo.close_delay,
+ serinfo.custom_divisor);
+ print_flags(&serinfo, "\tFlags: ", "");
+ printf("\n\n");
+ } else if (verbosity==0) {
+ if (serinfo.type) {
+ printf("%s at 0x%.4x (irq = %d) is a %s",
+ device, serinfo.port, serinfo.irq,
+ serial_type(serinfo.type));
+ print_flags(&serinfo, " (", ")");
+ printf("\n");
+ }
+ } else {
+ printf("%s, UART: %s, Port: 0x%.4x, IRQ: %d",
+ device, serial_type(serinfo.type),
+ serinfo.port, serinfo.irq);
+ print_flags(&serinfo, ", Flags: ", "");
+ printf("\n");
+ }
+ close(fd);
+}
+
+void set_serial(char *device, char ** arg)
+{
+ struct serial_struct old_serinfo, new_serinfo;
+ struct flag_type_table *p;
+ int fd;
+ int do_invert = 0;
+ char *word;
+
+
+ if ((fd = open(device, O_RDWR|O_NONBLOCK)) < 0) {
+ if (verbosity==0 && errno==ENOENT)
+ exit(201);
+ perror(device);
+ exit(201);
+ }
+ if (ioctl(fd, TIOCGSERIAL, &old_serinfo) < 0) {
+ perror("Cannot get serial info");
+ exit(1);
+ }
+ new_serinfo = old_serinfo;
+ while (*arg) {
+ do_invert = 0;
+ word = *arg++;
+ if (*word == '^') {
+ do_invert++;
+ word++;
+ }
+ for (p = flag_type_tbl; p->name; p++) {
+ if (!strcasecmp(p->name, word))
+ break;
+ }
+ if (!p->name) {
+ fprintf(stderr, "Invalid flag: %s\n", word);
+ exit(1);
+ }
+ if (do_invert && !(p->flags & FLAG_CAN_INVERT)) {
+ fprintf(stderr, "This flag can not be inverted: %s\n", word);
+ exit(1);
+ }
+ if ((p->flags & FLAG_NEED_ARG) && !*arg) {
+ fprintf(stderr, "Missing argument for %s\n", word);
+ exit(1);
+ }
+ switch (p->cmd) {
+ case CMD_FLAG:
+ new_serinfo.flags &= ~p->mask;
+ if (!do_invert)
+ new_serinfo.flags |= p->bits;
+ break;
+ case CMD_PORT:
+ new_serinfo.port = atonum(*arg++);
+ break;
+ case CMD_IRQ:
+ new_serinfo.irq = atonum(*arg++);
+ break;
+ case CMD_DIVISOR:
+ new_serinfo.custom_divisor = atonum(*arg++);
+ break;
+ case CMD_TYPE:
+ new_serinfo.type = uart_type(*arg++);
+ if (new_serinfo.type < 0) {
+ fprintf(stderr, "Illegal UART type: %s", *--arg);
+ exit(1);
+ }
+ break;
+ case CMD_BASE:
+ new_serinfo.baud_base = atonum(*arg++);
+ break;
+ case CMD_DELAY:
+ new_serinfo.close_delay = atonum(*arg++);
+ break;
+ case CMD_CONFIG:
+ if (ioctl(fd, TIOCSSERIAL, &new_serinfo) < 0) {
+ perror("Cannot set serial info");
+ exit(1);
+ }
+ if (ioctl(fd, TIOCSERCONFIG) < 0) {
+ perror("Cannot autoconfigure port");
+ exit(1);
+ }
+ if (ioctl(fd, TIOCGSERIAL, &new_serinfo) < 0) {
+ perror("Cannot get serial info");
+ exit(1);
+ }
+ break;
+ default:
+ fprintf(stderr, "Internal error: unhandled cmd #%d\n", p->cmd);
+ exit(1);
+ }
+ }
+ if (ioctl(fd, TIOCSSERIAL, &new_serinfo) < 0) {
+ perror("Cannot set serial info");
+ exit(1);
+ }
+ close(fd);
+ if (verbose_flag)
+ get_serial(device);
+}
+
+void do_wild_intr(char *device)
+{
+ int fd;
+ int i, mask;
+ int wild_mask = -1;
+
+ if ((fd = open(device, O_RDWR|O_NONBLOCK)) < 0) {
+ perror(device);
+ exit(1);
+ }
+ if (ioctl(fd, TIOCSERSWILD, &wild_mask) < 0) {
+ perror("Cannot scan for wild interrupts");
+ exit(1);
+ }
+ if (ioctl(fd, TIOCSERGWILD, &wild_mask) < 0) {
+ perror("Cannot get wild interrupt mask");
+ exit(1);
+ }
+ close(fd);
+ if (quiet_flag)
+ return;
+ if (wild_mask) {
+ printf("Wild interrupts found: ");
+ for (i=0, mask=1; mask <= wild_mask; i++, mask <<= 1)
+ if (mask & wild_mask)
+ printf(" %d", i);
+ printf("\n");
+ } else if (verbose_flag)
+ printf("No wild interrupts found.\n");
+ return;
+}
+
+
+
+
+void usage()
+{
+ fprintf(stderr, "setserial Version %s\n\n", VERSION_STR);
+ fprintf(stderr,
+ "usage: %s serial-device [cmd1 [arg]] ... \n\n", progname);
+ fprintf(stderr, "Available commands: (* = Takes an argument)\n");
+ fprintf(stderr, "\t\t(^ = can be preceded by a '^' to turn off the option)\n");
+fprintf(stderr, "\t* port\t\tset the I/O port\n");
+ fprintf(stderr, "\t* irq\t\tset the interrupt\n");
+ fprintf(stderr, "\t* uart\t\tset UART type (none, 8250, 16450, 16550, 16550A\n");
+ fprintf(stderr, "\t* baud_base\tset base baud rate (CLOCK_FREQ / 16)\n");
+ fprintf(stderr, "\t* divisor\tset the custom divisor (see spd_custom)\n");
+ fprintf(stderr, "\t* close_delay\tset the amount of time (in 1/100 of a\n");
+ fprintf(stderr, "\t\t\t\tsecond) that DTR should be kept low\n");
+ fprintf(stderr, "\t\t\t\twhile being closed\n");
+
+ fprintf(stderr, "\t^ fourport\tconfigure the port as an AST Fourport\n");
+ fprintf(stderr, "\t autoconfigure\tautomatically configure the serial port\n");
+ fprintf(stderr, "\t^ auto_irq\ttry to determine irq during autoconfiguration\n");
+ fprintf(stderr, "\t^ skip_test\tskip UART test during autoconfiguration\n");
+ fprintf(stderr, "\n");
+ fprintf(stderr, "\t^ sak\t\tset the break key as the Secure Attention Key\n");
+ fprintf(stderr, "\t^ session_lockout Lock out callout port across different sessions\n");
+ fprintf(stderr, "\t^ pgrp_lockout\tLock out callout port across different process groups\n");
+#ifdef ASYNC_CALLOUT_NOHUP
+ fprintf(stderr, "\t^ callout_nohup\tDon't hangup the tty when carrier detect drops\n");
+#endif
+ fprintf(stderr, "\t\t\t\t on the callout device\n");
+#ifdef ASYNC_SPLIT_TERMIOS
+ fprintf(stderr, "\t^ split_termios Use separate termios for callout and dailin lines\n");
+#endif
+ fprintf(stderr, "\t^ hup_notify\tNotify a process blocked on opening a dial in line\n");
+ fprintf(stderr, "\t\t\t\twhen a process has finished using a callout\n");
+ fprintf(stderr, "\t\t\t\tline by returning EAGAIN to the open.\n");
+ fprintf(stderr, "\n");
+ fprintf(stderr, "\t spd_hi\tuse 56kb instead of 38.4kb\n");
+ fprintf(stderr, "\t spd_vhi\tuse 115kb instead of 38.4kb\n");
+ fprintf(stderr, "\t spd_cust\tuse the custom divisor to set the speed at 38.4kb\n");
+ fprintf(stderr, "\t\t\t\t(baud rate = baud_base / custom_divisor)\n");
+ fprintf(stderr, "\t spd_normal\tuse 38.4kb when a buad rate of 38.4kb is selected\n");
+ fprintf(stderr, "\n");
+ fprintf(stderr, "Use a leading '0x' for hex numbers.\n");
+ fprintf(stderr, "CAUTION: Using an invalid port can lock up your machine!\n");
+ exit(1);
+}
+
+main(int argc, char **argv)
+{
+ int get_flag = 0, wild_intr_flag = 0;
+ int c;
+ extern int optind;
+ extern char *optarg;
+
+ progname = argv[0];
+ if (argc == 1)
+ usage();
+ while ((c = getopt(argc, argv, "abgqvVW")) != EOF) {
+ switch (c) {
+ case 'a':
+ verbosity = 2;
+ break;
+ case 'b':
+ verbosity = 0;
+ break;
+ case 'q':
+ quiet_flag++;
+ break;
+ case 'v':
+ verbose_flag++;
+ break;
+ case 'g':
+ get_flag++;
+ break;
+ case 'V':
+ fprintf(stderr, "setserial version %s\n", VERSION_STR);
+ exit(0);
+ case 'W':
+ wild_intr_flag++;
+ break;
+ default:
+ usage();
+ }
+ }
+ if (get_flag) {
+ argv += optind;
+ while (*argv)
+ get_serial(*argv++);
+ exit(0);
+ }
+ if (argc == optind)
+ usage();
+ if (wild_intr_flag) {
+ do_wild_intr(argv[optind]);
+ exit(0);
+ }
+ if (argc-optind == 1)
+ get_serial(argv[optind]);
+ else
+ set_serial(argv[optind], argv+optind+1);
+ exit(0);
+}
+
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