Annotation of sys/arch/i386/stand/libsa/dev_i386.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: dev_i386.c,v 1.30 2007/06/27 20:29:37 mk Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1996-1999 Michael Shalayeff
! 5: * All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: *
! 16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 18: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 19: * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
! 20: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 21: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 22: * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 24: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
! 25: * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
! 26: * THE POSSIBILITY OF SUCH DAMAGE.
! 27: */
! 28:
! 29: #include "libsa.h"
! 30: #include "biosdev.h"
! 31: #include <sys/param.h>
! 32: #include <dev/cons.h>
! 33:
! 34: extern int debug;
! 35:
! 36: /* XXX use slot for 'rd' for 'hd' pseudo-device */
! 37: const char bdevs[][4] = {
! 38: "wd", "", "fd", "", "sd", "st", "cd", "mcd",
! 39: "", "", "", "", "", "", "", "scd", "", "hd", ""
! 40: };
! 41: const int nbdevs = NENTS(bdevs);
! 42:
! 43: const char cdevs[][4] = {
! 44: "cn", "", "", "", "", "", "", "",
! 45: "com", "", "", "", "pc"
! 46: };
! 47: const int ncdevs = NENTS(cdevs);
! 48:
! 49: /* pass dev_t to the open routines */
! 50: int
! 51: devopen(struct open_file *f, const char *fname, char **file)
! 52: {
! 53: struct devsw *dp = devsw;
! 54: register int i, rc = 1;
! 55:
! 56: *file = (char *)fname;
! 57:
! 58: #ifdef DEBUG
! 59: if (debug)
! 60: printf("devopen:");
! 61: #endif
! 62:
! 63: for (i = 0; i < ndevs && rc != 0; dp++, i++) {
! 64: #ifdef DEBUG
! 65: if (debug)
! 66: printf(" %s: ", dp->dv_name);
! 67: #endif
! 68: if ((rc = (*dp->dv_open)(f, file)) == 0) {
! 69: f->f_dev = dp;
! 70: return 0;
! 71: }
! 72: #ifdef DEBUG
! 73: else if (debug)
! 74: printf("%d", rc);
! 75: #endif
! 76:
! 77: }
! 78: #ifdef DEBUG
! 79: if (debug)
! 80: putchar('\n');
! 81: #endif
! 82:
! 83: if ((f->f_flags & F_NODEV) == 0)
! 84: f->f_dev = dp;
! 85:
! 86: return rc;
! 87: }
! 88:
! 89: void
! 90: devboot(dev_t bootdev, char *p)
! 91: {
! 92: #ifdef _TEST
! 93: *p++ = '/';
! 94: *p++ = 'd';
! 95: *p++ = 'e';
! 96: *p++ = 'v';
! 97: *p++ = '/';
! 98: *p++ = 'r';
! 99: #endif
! 100: if (bootdev & 0x100) {
! 101: *p++ = 'c';
! 102: *p++ = 'd';
! 103: *p++ = '0';
! 104: } else {
! 105: if (bootdev & 0x80)
! 106: *p++ = 'h';
! 107: else
! 108: *p++ = 'f';
! 109: *p++ = 'd';
! 110: *p++ = '0' + (bootdev & 0x7f);
! 111: }
! 112: *p++ = 'a';
! 113: *p = '\0';
! 114: }
! 115:
! 116: int pch_pos = 0;
! 117:
! 118: void
! 119: putchar(int c)
! 120: {
! 121: switch (c) {
! 122: case '\177': /* DEL erases */
! 123: cnputc('\b');
! 124: cnputc(' ');
! 125: case '\b':
! 126: cnputc('\b');
! 127: if (pch_pos)
! 128: pch_pos--;
! 129: break;
! 130: case '\t':
! 131: do
! 132: cnputc(' ');
! 133: while (++pch_pos % 8);
! 134: break;
! 135: case '\n':
! 136: case '\r':
! 137: cnputc(c);
! 138: pch_pos=0;
! 139: break;
! 140: default:
! 141: cnputc(c);
! 142: pch_pos++;
! 143: break;
! 144: }
! 145: }
! 146:
! 147: int
! 148: getchar(void)
! 149: {
! 150: register int c = cngetc();
! 151:
! 152: if (c == '\r')
! 153: c = '\n';
! 154:
! 155: if ((c < ' ' && c != '\n') || c == '\177')
! 156: return c;
! 157:
! 158: putchar(c);
! 159:
! 160: return c;
! 161: }
! 162:
! 163: char ttyname_buf[8];
! 164:
! 165: char *
! 166: ttyname(int fd)
! 167: {
! 168: snprintf(ttyname_buf, sizeof ttyname_buf, "%s%d",
! 169: cdevs[major(cn_tab->cn_dev)], minor(cn_tab->cn_dev));
! 170:
! 171: return ttyname_buf;
! 172: }
! 173:
! 174: dev_t
! 175: ttydev(char *name)
! 176: {
! 177: int i, unit = -1;
! 178: char *no = name + strlen(name) - 1;
! 179:
! 180: while (no >= name && *no >= '0' && *no <= '9')
! 181: unit = (unit < 0 ? 0 : (unit * 10)) + *no-- - '0';
! 182: if (no < name || unit < 0)
! 183: return NODEV;
! 184: for (i = 0; i < ncdevs; i++)
! 185: if (strncmp(name, cdevs[i], no - name + 1) == 0)
! 186: return (makedev(i, unit));
! 187: return NODEV;
! 188: }
! 189:
! 190: int
! 191: cnspeed(dev_t dev, int sp)
! 192: {
! 193: if (major(dev) == 8) /* comN */
! 194: return (comspeed(dev, sp));
! 195:
! 196: /* pc0 and anything else */
! 197: return 9600;
! 198: }
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