![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to ht.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [CSRG BSD Unix] / 41BSD / 4.0.upgrade / sys / dev|
Return to ht.c CVS log | Up to [CSRG BSD Unix] / 41BSD / 4.0.upgrade / sys / dev |
1.1 ! root 1: /* ht.c 4.20 81/10/27 */ ! 2: ! 3: #include "tu.h" ! 4: #if NHT > 0 ! 5: /* ! 6: * TM03/TU?? tape driver ! 7: * ! 8: * TODO: ! 9: * cleanup messages on errors ! 10: * test ioctl's ! 11: * see how many rewind interrups we get if we kick when not at BOT ! 12: * fixup rle error on block tape code ! 13: */ ! 14: #include "../h/param.h" ! 15: #include "../h/systm.h" ! 16: #include "../h/buf.h" ! 17: #include "../h/conf.h" ! 18: #include "../h/dir.h" ! 19: #include "../h/file.h" ! 20: #include "../h/user.h" ! 21: #include "../h/map.h" ! 22: #include "../h/pte.h" ! 23: #include "../h/mbareg.h" ! 24: #include "../h/mbavar.h" ! 25: #include "../h/mtio.h" ! 26: #include "../h/ioctl.h" ! 27: #include "../h/cmap.h" ! 28: #include "../h/cpu.h" ! 29: ! 30: #include "../h/htreg.h" ! 31: ! 32: struct buf rhtbuf[NHT]; ! 33: struct buf chtbuf[NHT]; ! 34: ! 35: short httypes[] = ! 36: { MBDT_TM03, MBDT_TE16, MBDT_TU45, MBDT_TU77, 0 }; ! 37: struct mba_device *htinfo[NHT]; ! 38: int htattach(), htslave(), htustart(), htndtint(), htdtint(); ! 39: struct mba_driver htdriver = ! 40: { htattach, htslave, htustart, 0, htdtint, htndtint, ! 41: httypes, "ht", "tu", htinfo }; ! 42: ! 43: #define MASKREG(r) ((r) & 0xffff) ! 44: ! 45: /* bits in minor device */ ! 46: #define TUUNIT(dev) (minor(dev)&03) ! 47: #define H_NOREWIND 04 ! 48: #define H_1600BPI 08 ! 49: ! 50: #define HTUNIT(dev) (tutoht[TUUNIT(dev)]) ! 51: ! 52: #define INF (daddr_t)1000000L /* a block number that wont exist */ ! 53: ! 54: struct tu_softc { ! 55: char sc_openf; ! 56: char sc_flags; ! 57: daddr_t sc_blkno; ! 58: daddr_t sc_nxrec; ! 59: u_short sc_erreg; ! 60: u_short sc_dsreg; ! 61: short sc_resid; ! 62: short sc_dens; ! 63: struct mba_device *sc_mi; ! 64: int sc_slave; ! 65: } tu_softc[NTU]; ! 66: short tutoht[NTU]; ! 67: ! 68: /* ! 69: * Bits for sc_flags. ! 70: */ ! 71: #define H_WRITTEN 1 /* last operation was a write */ ! 72: #define H_ERASED 2 /* last write retry was an erase gap */ ! 73: #define H_REWIND 4 /* last unit start was a rewind */ ! 74: ! 75: char hter_bits[] = HTER_BITS; ! 76: char htds_bits[] = HTDS_BITS; ! 77: ! 78: /*ARGSUSED*/ ! 79: htattach(mi) ! 80: struct mba_device *mi; ! 81: { ! 82: ! 83: } ! 84: ! 85: htslave(mi, ms) ! 86: struct mba_device *mi; ! 87: struct mba_slave *ms; ! 88: { ! 89: register struct tu_softc *sc = &tu_softc[ms->ms_unit]; ! 90: register struct htdevice *htaddr = (struct htdevice *)mi->mi_drv; ! 91: ! 92: htaddr->httc = ms->ms_slave; ! 93: if (htaddr->htdt & HTDT_SPR) { ! 94: sc->sc_mi = mi; ! 95: sc->sc_slave = ms->ms_slave; ! 96: tutoht[ms->ms_unit] = mi->mi_unit; ! 97: return (1); ! 98: } else ! 99: return (0); ! 100: } ! 101: ! 102: htopen(dev, flag) ! 103: dev_t dev; ! 104: int flag; ! 105: { ! 106: register int tuunit; ! 107: register struct mba_device *mi; ! 108: register struct tu_softc *sc; ! 109: int olddens, dens; ! 110: ! 111: tuunit = TUUNIT(dev); ! 112: if (tuunit >= NTU || (sc = &tu_softc[tuunit])->sc_openf || ! 113: (mi = htinfo[HTUNIT(dev)]) == 0 || mi->mi_alive == 0) { ! 114: u.u_error = ENXIO; ! 115: return; ! 116: } ! 117: olddens = sc->sc_dens; ! 118: dens = sc->sc_dens = ! 119: ((minor(dev)&H_1600BPI)?HTTC_1600BPI:HTTC_800BPI)| ! 120: HTTC_PDP11|sc->sc_slave; ! 121: htcommand(dev, HT_SENSE, 1); ! 122: sc->sc_dens = olddens; ! 123: if ((sc->sc_dsreg & HTDS_MOL) == 0) { ! 124: uprintf("tu%d: not online\n", tuunit); ! 125: u.u_error = EIO; ! 126: return; ! 127: } ! 128: if ((flag&FWRITE) && (sc->sc_dsreg&HTDS_WRL)) { ! 129: uprintf("tu%d: no write ring\n", tuunit); ! 130: u.u_error = EIO; ! 131: return; ! 132: } ! 133: if ((sc->sc_dsreg & HTDS_BOT) == 0 && (flag&FWRITE) && ! 134: dens != sc->sc_dens) { ! 135: uprintf("tu%d: can't change density in mid-tape\n", tuunit); ! 136: u.u_error = EIO; ! 137: return; ! 138: } ! 139: sc->sc_openf = 1; ! 140: sc->sc_blkno = (daddr_t)0; ! 141: sc->sc_nxrec = INF; ! 142: sc->sc_flags = 0; ! 143: sc->sc_dens = dens; ! 144: } ! 145: ! 146: htclose(dev, flag) ! 147: register dev_t dev; ! 148: register flag; ! 149: { ! 150: register struct tu_softc *sc = &tu_softc[TUUNIT(dev)]; ! 151: ! 152: if (flag == FWRITE || ((flag&FWRITE) && (sc->sc_flags&H_WRITTEN))) { ! 153: htcommand(dev, HT_WEOF, 1); ! 154: htcommand(dev, HT_WEOF, 1); ! 155: htcommand(dev, HT_SREV, 1); ! 156: } ! 157: if ((minor(dev)&H_NOREWIND) == 0) ! 158: htcommand(dev, HT_REW, 0); ! 159: sc->sc_openf = 0; ! 160: } ! 161: ! 162: htcommand(dev, com, count) ! 163: dev_t dev; ! 164: int com, count; ! 165: { ! 166: register struct buf *bp; ! 167: ! 168: bp = &chtbuf[HTUNIT(dev)]; ! 169: (void) spl5(); ! 170: while (bp->b_flags&B_BUSY) { ! 171: if(bp->b_repcnt == 0 && (bp->b_flags&B_DONE)) ! 172: break; ! 173: bp->b_flags |= B_WANTED; ! 174: sleep((caddr_t)bp, PRIBIO); ! 175: } ! 176: bp->b_flags = B_BUSY|B_READ; ! 177: (void) spl0(); ! 178: bp->b_dev = dev; ! 179: bp->b_command = com; ! 180: bp->b_repcnt = count; ! 181: bp->b_blkno = 0; ! 182: htstrategy(bp); ! 183: if (count == 0) ! 184: return; ! 185: iowait(bp); ! 186: if (bp->b_flags&B_WANTED) ! 187: wakeup((caddr_t)bp); ! 188: bp->b_flags &= B_ERROR; ! 189: } ! 190: ! 191: htstrategy(bp) ! 192: register struct buf *bp; ! 193: { ! 194: register struct mba_device *mi = htinfo[HTUNIT(bp->b_dev)]; ! 195: register struct buf *dp; ! 196: ! 197: bp->av_forw = NULL; ! 198: dp = &mi->mi_tab; ! 199: (void) spl5(); ! 200: if (dp->b_actf == NULL) ! 201: dp->b_actf = bp; ! 202: else ! 203: dp->b_actl->av_forw = bp; ! 204: dp->b_actl = bp; ! 205: if (dp->b_active == 0) ! 206: mbustart(mi); ! 207: (void) spl0(); ! 208: } ! 209: ! 210: htustart(mi) ! 211: register struct mba_device *mi; ! 212: { ! 213: register struct htdevice *htaddr = ! 214: (struct htdevice *)mi->mi_drv; ! 215: register struct buf *bp = mi->mi_tab.b_actf; ! 216: register struct tu_softc *sc = &tu_softc[TUUNIT(bp->b_dev)]; ! 217: daddr_t blkno; ! 218: ! 219: htaddr->httc = sc->sc_dens; ! 220: if (bp == &chtbuf[HTUNIT(bp->b_dev)] && bp->b_command == HT_SENSE) { ! 221: htaddr->htcs1 = HT_SENSE|HT_GO; ! 222: mbclrattn(mi); ! 223: } ! 224: sc->sc_dsreg = htaddr->htds; ! 225: sc->sc_erreg = htaddr->hter; ! 226: sc->sc_resid = htaddr->htfc; ! 227: sc->sc_flags &= ~(H_WRITTEN|H_REWIND); ! 228: if ((htaddr->htdt & HTDT_SPR) == 0 || (htaddr->htds & HTDS_MOL) == 0) ! 229: if (sc->sc_openf > 0) ! 230: sc->sc_openf = -1; ! 231: if (sc->sc_openf < 0) { ! 232: bp->b_flags |= B_ERROR; ! 233: return (MBU_NEXT); ! 234: } ! 235: if (bp != &chtbuf[HTUNIT(bp->b_dev)]) { ! 236: if (dbtofsb(bp->b_blkno) > sc->sc_nxrec) { ! 237: bp->b_flags |= B_ERROR; ! 238: bp->b_error = ENXIO; ! 239: return (MBU_NEXT); ! 240: } ! 241: if (dbtofsb(bp->b_blkno) == sc->sc_nxrec && ! 242: bp->b_flags&B_READ) { ! 243: bp->b_resid = bp->b_bcount; ! 244: clrbuf(bp); ! 245: return (MBU_NEXT); ! 246: } ! 247: if ((bp->b_flags&B_READ)==0) ! 248: sc->sc_nxrec = dbtofsb(bp->b_blkno) + 1; ! 249: } else { ! 250: if (bp->b_command == HT_SENSE) ! 251: return (MBU_NEXT); ! 252: if (bp->b_command == HT_REW) ! 253: sc->sc_flags |= H_REWIND; ! 254: else ! 255: htaddr->htfc = -bp->b_bcount; ! 256: htaddr->htcs1 = bp->b_command|HT_GO; ! 257: return (MBU_STARTED); ! 258: } ! 259: if ((blkno = sc->sc_blkno) == dbtofsb(bp->b_blkno)) { ! 260: htaddr->htfc = -bp->b_bcount; ! 261: if ((bp->b_flags&B_READ) == 0) { ! 262: if (mi->mi_tab.b_errcnt) { ! 263: if ((sc->sc_flags & H_ERASED) == 0) { ! 264: sc->sc_flags |= H_ERASED; ! 265: htaddr->htcs1 = HT_ERASE | HT_GO; ! 266: return (MBU_STARTED); ! 267: } ! 268: sc->sc_flags &= ~H_ERASED; ! 269: } ! 270: if (htaddr->htds & HTDS_EOT) { ! 271: bp->b_resid = bp->b_bcount; ! 272: return (MBU_NEXT); ! 273: } ! 274: } ! 275: return (MBU_DODATA); ! 276: } ! 277: if (blkno < dbtofsb(bp->b_blkno)) { ! 278: htaddr->htfc = blkno - dbtofsb(bp->b_blkno); ! 279: htaddr->htcs1 = HT_SFORW|HT_GO; ! 280: } else { ! 281: htaddr->htfc = dbtofsb(bp->b_blkno) - blkno; ! 282: htaddr->htcs1 = HT_SREV|HT_GO; ! 283: } ! 284: return (MBU_STARTED); ! 285: } ! 286: ! 287: htdtint(mi, mbsr) ! 288: register struct mba_device *mi; ! 289: int mbsr; ! 290: { ! 291: register struct htdevice *htaddr = (struct htdevice *)mi->mi_drv; ! 292: register struct buf *bp = mi->mi_tab.b_actf; ! 293: register struct tu_softc *sc; ! 294: int ds, er, mbs; ! 295: ! 296: sc = &tu_softc[TUUNIT(bp->b_dev)]; ! 297: ds = sc->sc_dsreg = MASKREG(htaddr->htds); ! 298: er = sc->sc_erreg = MASKREG(htaddr->hter); ! 299: sc->sc_resid = MASKREG(htaddr->htfc); ! 300: mbs = mbsr; ! 301: sc->sc_blkno++; ! 302: if((bp->b_flags & B_READ) == 0) ! 303: sc->sc_flags |= H_WRITTEN; ! 304: if ((ds&(HTDS_ERR|HTDS_MOL)) != HTDS_MOL || mbs & MBSR_EBITS) { ! 305: htaddr->htcs1 = HT_DCLR|HT_GO; ! 306: mbclrattn(mi); ! 307: if (bp == &rhtbuf[HTUNIT(bp->b_dev)]) { ! 308: er &= ~HTER_FCE; ! 309: mbs &= ~(MBSR_DTABT|MBSR_MBEXC); ! 310: } ! 311: if (bp->b_flags & B_READ && ds & HTDS_PES) ! 312: er &= ~(HTER_CSITM|HTER_CORCRC); ! 313: if (er&HTER_HARD || mbs&MBSR_EBITS || (ds&HTDS_MOL) == 0 || ! 314: er && ++mi->mi_tab.b_errcnt >= 7) { ! 315: if ((ds & HTDS_MOL) == 0 && sc->sc_openf > 0) ! 316: sc->sc_openf = -1; ! 317: if ((er&HTER_HARD) == HTER_FCE && ! 318: (mbs&MBSR_EBITS) == (MBSR_DTABT|MBSR_MBEXC) && ! 319: (ds&HTDS_MOL)) ! 320: goto noprint; ! 321: printf("tu%d: hard error bn%d mbsr=%b er=%b ds=%b\n", ! 322: TUUNIT(bp->b_dev), bp->b_blkno, ! 323: mbsr, mbsr_bits, ! 324: sc->sc_erreg, hter_bits, ! 325: sc->sc_dsreg, htds_bits); ! 326: noprint: ! 327: bp->b_flags |= B_ERROR; ! 328: return (MBD_DONE); ! 329: } ! 330: if (er) ! 331: return (MBD_RETRY); ! 332: } ! 333: bp->b_resid = 0; ! 334: if (bp->b_flags & B_READ) ! 335: if (ds&HTDS_TM) { /* must be a read, right? */ ! 336: bp->b_resid = bp->b_bcount; ! 337: sc->sc_nxrec = dbtofsb(bp->b_blkno); ! 338: } else if(bp->b_bcount > MASKREG(htaddr->htfc)) ! 339: bp->b_resid = bp->b_bcount - MASKREG(htaddr->htfc); ! 340: return (MBD_DONE); ! 341: } ! 342: ! 343: htndtint(mi) ! 344: register struct mba_device *mi; ! 345: { ! 346: register struct htdevice *htaddr = (struct htdevice *)mi->mi_drv; ! 347: register struct buf *bp = mi->mi_tab.b_actf; ! 348: register struct tu_softc *sc; ! 349: int er, ds, fc; ! 350: ! 351: ds = MASKREG(htaddr->htds); ! 352: er = MASKREG(htaddr->hter); ! 353: fc = MASKREG(htaddr->htfc); ! 354: if (er) { ! 355: htaddr->htcs1 = HT_DCLR|HT_GO; ! 356: mbclrattn(mi); ! 357: } ! 358: if (bp == 0) ! 359: return (MBN_SKIP); ! 360: sc = &tu_softc[TUUNIT(bp->b_dev)]; ! 361: sc->sc_dsreg = ds; ! 362: sc->sc_erreg = er; ! 363: sc->sc_resid = fc; ! 364: if (bp == &chtbuf[HTUNIT(bp->b_dev)]) { ! 365: switch (bp->b_command) { ! 366: case HT_REWOFFL: ! 367: /* offline is on purpose; don't do anything special */ ! 368: ds |= HTDS_MOL; ! 369: break; ! 370: case HT_SREV: ! 371: /* if backspace file hit bot, its not an error */ ! 372: if (er == (HTER_NEF|HTER_FCE) && ds&HTDS_BOT && ! 373: bp->b_repcnt == INF) ! 374: er &= ~HTER_NEF; ! 375: break; ! 376: } ! 377: er &= ~HTER_FCE; ! 378: if (er == 0) ! 379: ds &= ~HTDS_ERR; ! 380: } ! 381: if ((ds & (HTDS_ERR|HTDS_MOL)) != HTDS_MOL) { ! 382: if ((ds & HTDS_MOL) == 0 && sc->sc_openf > 0) ! 383: sc->sc_openf = -1; ! 384: printf("tu%d: hard error bn%d er=%b ds=%b\n", ! 385: TUUNIT(bp->b_dev), bp->b_blkno, ! 386: sc->sc_erreg, hter_bits, sc->sc_dsreg, htds_bits); ! 387: bp->b_flags |= B_ERROR; ! 388: return (MBN_DONE); ! 389: } ! 390: if (bp == &chtbuf[HTUNIT(bp->b_dev)]) { ! 391: if (sc->sc_flags & H_REWIND) ! 392: return (ds & HTDS_BOT ? MBN_DONE : MBN_RETRY); ! 393: bp->b_resid = -sc->sc_resid; ! 394: return (MBN_DONE); ! 395: } ! 396: if (ds & HTDS_TM) ! 397: if (sc->sc_blkno > dbtofsb(bp->b_blkno)) { ! 398: sc->sc_nxrec = dbtofsb(bp->b_blkno) - fc; ! 399: sc->sc_blkno = sc->sc_nxrec; ! 400: } else { ! 401: sc->sc_blkno = dbtofsb(bp->b_blkno) + fc; ! 402: sc->sc_nxrec = sc->sc_blkno - 1; ! 403: } ! 404: else ! 405: sc->sc_blkno = dbtofsb(bp->b_blkno); ! 406: return (MBN_RETRY); ! 407: } ! 408: ! 409: htread(dev) ! 410: dev_t dev; ! 411: { ! 412: ! 413: htphys(dev); ! 414: if (u.u_error) ! 415: return; ! 416: physio(htstrategy, &rhtbuf[HTUNIT(dev)], dev, B_READ, minphys); ! 417: } ! 418: ! 419: htwrite(dev) ! 420: { ! 421: ! 422: htphys(dev); ! 423: if (u.u_error) ! 424: return; ! 425: physio(htstrategy, &rhtbuf[HTUNIT(dev)], dev, B_WRITE, minphys); ! 426: } ! 427: ! 428: htphys(dev) ! 429: dev_t dev; ! 430: { ! 431: register int htunit; ! 432: register struct tu_softc *sc; ! 433: register struct mba_device *mi; ! 434: daddr_t a; ! 435: ! 436: htunit = HTUNIT(dev); ! 437: if (htunit >= NHT || (mi = htinfo[htunit]) == 0 || mi->mi_alive == 0) { ! 438: u.u_error = ENXIO; ! 439: return; ! 440: } ! 441: a = u.u_offset >> 9; ! 442: sc = &tu_softc[TUUNIT(dev)]; ! 443: sc->sc_blkno = dbtofsb(a); ! 444: sc->sc_nxrec = dbtofsb(a)+1; ! 445: } ! 446: ! 447: /*ARGSUSED*/ ! 448: htioctl(dev, cmd, addr, flag) ! 449: dev_t dev; ! 450: int cmd; ! 451: caddr_t addr; ! 452: int flag; ! 453: { ! 454: register struct tu_softc *sc = &tu_softc[TUUNIT(dev)]; ! 455: register struct buf *bp = &chtbuf[HTUNIT(dev)]; ! 456: register callcount; ! 457: int fcount; ! 458: struct mtop mtop; ! 459: struct mtget mtget; ! 460: /* we depend of the values and order of the MT codes here */ ! 461: static htops[] = ! 462: {HT_WEOF,HT_SFORW,HT_SREV,HT_SFORW,HT_SREV,HT_REW,HT_REWOFFL,HT_SENSE}; ! 463: ! 464: switch (cmd) { ! 465: case MTIOCTOP: /* tape operation */ ! 466: if (copyin((caddr_t)addr, (caddr_t)&mtop, sizeof(mtop))) { ! 467: u.u_error = EFAULT; ! 468: return; ! 469: } ! 470: switch(mtop.mt_op) { ! 471: case MTWEOF: ! 472: callcount = mtop.mt_count; ! 473: fcount = 1; ! 474: break; ! 475: case MTFSF: case MTBSF: ! 476: callcount = mtop.mt_count; ! 477: fcount = INF; ! 478: break; ! 479: case MTFSR: case MTBSR: ! 480: callcount = 1; ! 481: fcount = mtop.mt_count; ! 482: break; ! 483: case MTREW: case MTOFFL: ! 484: callcount = 1; ! 485: fcount = 1; ! 486: break; ! 487: default: ! 488: u.u_error = ENXIO; ! 489: return; ! 490: } ! 491: if (callcount <= 0 || fcount <= 0) { ! 492: u.u_error = ENXIO; ! 493: return; ! 494: } ! 495: while (--callcount >= 0) { ! 496: htcommand(dev, htops[mtop.mt_op], fcount); ! 497: if ((mtop.mt_op == MTFSR || mtop.mt_op == MTBSR) && ! 498: bp->b_resid) { ! 499: u.u_error = EIO; ! 500: break; ! 501: } ! 502: if ((bp->b_flags&B_ERROR) || sc->sc_dsreg&HTDS_BOT) ! 503: break; ! 504: } ! 505: geterror(bp); ! 506: return; ! 507: case MTIOCGET: ! 508: mtget.mt_dsreg = sc->sc_dsreg; ! 509: mtget.mt_erreg = sc->sc_erreg; ! 510: mtget.mt_resid = sc->sc_resid; ! 511: mtget.mt_type = MT_ISHT; ! 512: if (copyout((caddr_t)&mtget, addr, sizeof(mtget))) ! 513: u.u_error = EFAULT; ! 514: return; ! 515: default: ! 516: u.u_error = ENXIO; ! 517: } ! 518: } ! 519: ! 520: #define DBSIZE 20 ! 521: ! 522: htdump() ! 523: { ! 524: register struct mba_device *mi; ! 525: register struct mba_regs *mp; ! 526: register struct htdevice *htaddr; ! 527: int blk, num; ! 528: int start; ! 529: ! 530: start = 0; ! 531: num = maxfree; ! 532: #define phys(a,b) ((b)((int)(a)&0x7fffffff)) ! 533: if (htinfo[0] == 0) ! 534: return (ENXIO); ! 535: mi = phys(htinfo[0], struct mba_device *); ! 536: mp = phys(mi->mi_hd, struct mba_hd *)->mh_physmba; ! 537: mp->mba_cr = MBCR_IE; ! 538: htaddr = (struct htdevice *)&mp->mba_drv[mi->mi_drive]; ! 539: htaddr->httc = HTTC_PDP11|HTTC_1600BPI; ! 540: htaddr->htcs1 = HT_DCLR|HT_GO; ! 541: while (num > 0) { ! 542: blk = num > DBSIZE ? DBSIZE : num; ! 543: htdwrite(start, blk, htaddr, mp); ! 544: start += blk; ! 545: num -= blk; ! 546: } ! 547: hteof(htaddr); ! 548: hteof(htaddr); ! 549: htwait(htaddr); ! 550: if (htaddr->htds&HTDS_ERR) ! 551: return (EIO); ! 552: htaddr->htcs1 = HT_REW|HT_GO; ! 553: return (0); ! 554: } ! 555: ! 556: htdwrite(dbuf, num, htaddr, mp) ! 557: register dbuf, num; ! 558: register struct htdevice *htaddr; ! 559: struct mba_regs *mp; ! 560: { ! 561: register struct pte *io; ! 562: register int i; ! 563: ! 564: htwait(htaddr); ! 565: io = mp->mba_map; ! 566: for (i = 0; i < num; i++) ! 567: *(int *)io++ = dbuf++ | PG_V; ! 568: htaddr->htfc = -(num*NBPG); ! 569: mp->mba_sr = -1; ! 570: mp->mba_bcr = -(num*NBPG); ! 571: mp->mba_var = 0; ! 572: htaddr->htcs1 = HT_WCOM|HT_GO; ! 573: } ! 574: ! 575: htwait(htaddr) ! 576: struct htdevice *htaddr; ! 577: { ! 578: register s; ! 579: ! 580: do ! 581: s = htaddr->htds; ! 582: while ((s & HTDS_DRY) == 0); ! 583: } ! 584: ! 585: hteof(htaddr) ! 586: struct htdevice *htaddr; ! 587: { ! 588: ! 589: htwait(htaddr); ! 590: htaddr->htcs1 = HT_WEOF|HT_GO; ! 591: } ! 592: #endif
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.