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1.1 ! root 1: /* ! 2: * Copyright (c) 1982, 1986 Regents of the University of California. ! 3: * All rights reserved. The Berkeley software License Agreement ! 4: * specifies the terms and conditions for redistribution. ! 5: * ! 6: * @(#)dn.c 7.1 (Berkeley) 6/5/86 ! 7: */ ! 8: ! 9: #include "dn.h" ! 10: #if NDN > 0 ! 11: /* ! 12: * DN-11 ACU interface ! 13: */ ! 14: #include "../machine/pte.h" ! 15: ! 16: #include "param.h" ! 17: #include "systm.h" ! 18: #include "dir.h" ! 19: #include "user.h" ! 20: #include "buf.h" ! 21: #include "map.h" ! 22: #include "conf.h" ! 23: #include "uio.h" ! 24: ! 25: #include "ubavar.h" ! 26: ! 27: struct dndevice { ! 28: u_short dn_reg[4]; ! 29: }; ! 30: ! 31: struct uba_device *dninfo[NDN]; ! 32: int dnprobe(), dnattach(), dnintr(); ! 33: u_short dnstd[] = { 0175200, 0 }; ! 34: struct uba_driver dndriver = ! 35: { dnprobe, 0, dnattach, 0, dnstd, "dn", dninfo }; ! 36: ! 37: #define CRQ 0x001 /* call request */ ! 38: #define DPR 0x002 /* digit present */ ! 39: #define MENABLE 0x004 /* master enable */ ! 40: #define MAINT 0x008 /* maintenance mode */ ! 41: #define PND 0x010 /* present next digit */ ! 42: #define DSS 0x020 /* data set status */ ! 43: #define IENABLE 0x040 /* interrupt enable */ ! 44: #define DONE 0x080 /* operation complete */ ! 45: #define DLO 0x1000 /* data line occupied */ ! 46: #define ACR 0x4000 /* abandon call and retry */ ! 47: #define PWI 0x8000 /* power indicate */ ! 48: ! 49: #define DNPRI (PZERO+5) ! 50: #define DNUNIT(dev) (minor(dev)>>2) ! 51: #define DNREG(dev) ((dev)&03) ! 52: ! 53: #define OBUFSIZ 40 /* largest phone # dialer can handle */ ! 54: ! 55: /* ! 56: * There's no good way to determine the correct number of dialers attached ! 57: * to a single device (especially when dialers such as Vadic-821 MACS ! 58: * exist which can address four chassis, each with its own dialer). ! 59: */ ! 60: dnprobe(reg) ! 61: caddr_t reg; ! 62: { ! 63: register int br, cvec; /* value-result, must be r11, r10 */ ! 64: register struct dndevice *dnaddr = (struct dndevice *)reg; ! 65: ! 66: #ifdef lint ! 67: br = 0; cvec = 0; br = cvec; cvec = br; ! 68: dnintr(0); ! 69: #endif ! 70: /* ! 71: * If there's at least one dialer out there it better be ! 72: * at chassis 0. ! 73: */ ! 74: dnaddr->dn_reg[0] = MENABLE|IENABLE|DONE; ! 75: DELAY(5); ! 76: dnaddr->dn_reg[0] = 0; ! 77: return (sizeof (struct dndevice)); ! 78: } ! 79: ! 80: /*ARGSUSED*/ ! 81: dnattach(ui) ! 82: struct uba_device *ui; ! 83: { ! 84: ! 85: } ! 86: ! 87: /*ARGSUSED*/ ! 88: dnopen(dev, flag) ! 89: dev_t dev; ! 90: int flag; ! 91: { ! 92: register struct dndevice *dp; ! 93: register u_short unit, *dnreg; ! 94: register struct uba_device *ui; ! 95: register short dialer; ! 96: ! 97: if ((unit = DNUNIT(dev)) >= NDN || (ui = dninfo[unit]) == 0 || ! 98: ui->ui_alive == 0) ! 99: return (ENXIO); ! 100: dialer = DNREG(dev); ! 101: dp = (struct dndevice *)ui->ui_addr; ! 102: if (dp->dn_reg[dialer] & PWI) ! 103: return (ENXIO); ! 104: dnreg = &(dp->dn_reg[dialer]); ! 105: if (*dnreg&(DLO|CRQ)) ! 106: return (EBUSY); ! 107: dp->dn_reg[0] |= MENABLE; ! 108: *dnreg = IENABLE|MENABLE|CRQ; ! 109: return (0); ! 110: } ! 111: ! 112: /*ARGSUSED*/ ! 113: dnclose(dev, flag) ! 114: dev_t dev; ! 115: { ! 116: register struct dndevice *dp; ! 117: ! 118: dp = (struct dndevice *)dninfo[DNUNIT(dev)]->ui_addr; ! 119: dp->dn_reg[DNREG(dev)] = MENABLE; ! 120: } ! 121: ! 122: dnwrite(dev, uio) ! 123: dev_t dev; ! 124: struct uio *uio; ! 125: { ! 126: register u_short *dnreg; ! 127: register int cc; ! 128: register struct dndevice *dp; ! 129: char obuf[OBUFSIZ]; ! 130: register char *cp; ! 131: extern lbolt; ! 132: int error; ! 133: ! 134: dp = (struct dndevice *)dninfo[DNUNIT(dev)]->ui_addr; ! 135: dnreg = &(dp->dn_reg[DNREG(dev)]); ! 136: cc = MIN(uio->uio_resid, OBUFSIZ); ! 137: cp = obuf; ! 138: error = uiomove(cp, cc, UIO_WRITE, uio); ! 139: if (error) ! 140: return (error); ! 141: while ((*dnreg & (PWI|ACR|DSS)) == 0 && cc >= 0) { ! 142: (void) spl4(); ! 143: if ((*dnreg & PND) == 0 || cc == 0) ! 144: sleep((caddr_t)dnreg, DNPRI); ! 145: else switch(*cp) { ! 146: ! 147: case '-': ! 148: sleep((caddr_t)&lbolt, DNPRI); ! 149: sleep((caddr_t)&lbolt, DNPRI); ! 150: break; ! 151: ! 152: case 'f': ! 153: *dnreg &= ~CRQ; ! 154: sleep((caddr_t)&lbolt, DNPRI); ! 155: *dnreg |= CRQ; ! 156: break; ! 157: ! 158: case '*': case ':': ! 159: *cp = 012; ! 160: goto dial; ! 161: ! 162: case '#': case ';': ! 163: *cp = 013; ! 164: goto dial; ! 165: ! 166: case 'e': case '<': ! 167: *cp = 014; ! 168: goto dial; ! 169: ! 170: case 'w': case '=': ! 171: *cp = 015; ! 172: goto dial; ! 173: ! 174: default: ! 175: if (*cp < '0' || *cp > '9') ! 176: break; ! 177: dial: ! 178: *dnreg = (*cp << 8) | (IENABLE|MENABLE|DPR|CRQ); ! 179: sleep((caddr_t)dnreg, DNPRI); ! 180: } ! 181: cp++, cc--; ! 182: spl0(); ! 183: } ! 184: if (*dnreg & (PWI|ACR)) ! 185: return (EIO); ! 186: return (0); ! 187: } ! 188: ! 189: dnintr(dev) ! 190: dev_t dev; ! 191: { ! 192: register u_short *basereg, *dnreg; ! 193: ! 194: basereg = (u_short *)dninfo[dev]->ui_addr; ! 195: *basereg &= ~MENABLE; ! 196: for (dnreg = basereg; dnreg < basereg + 4; dnreg++) ! 197: if (*dnreg & DONE) { ! 198: *dnreg &= ~(DONE|DPR); ! 199: wakeup((caddr_t)dnreg); ! 200: } ! 201: *basereg |= MENABLE; ! 202: } ! 203: #endif
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