![[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] / 43BSDReno / sys / vaxmba|
Return to ht.c CVS log | Up to [CSRG BSD Unix] / 43BSDReno / sys / vaxmba |
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: * @(#)ht.c 7.11 (Berkeley) 4/12/90 ! 7: */ ! 8: ! 9: #include "tu.h" ! 10: #if NHT > 0 ! 11: /* ! 12: * TM03/TU?? tape driver ! 13: * ! 14: * TODO: ! 15: * cleanup messages on errors ! 16: * test ioctl's ! 17: * see how many rewind interrups we get if we kick when not at BOT ! 18: * fixup rle error on block tape code ! 19: */ ! 20: #include "param.h" ! 21: #include "systm.h" ! 22: #include "buf.h" ! 23: #include "conf.h" ! 24: #include "file.h" ! 25: #include "user.h" ! 26: #include "proc.h" ! 27: #include "map.h" ! 28: #include "ioctl.h" ! 29: #include "mtio.h" ! 30: #include "cmap.h" ! 31: #include "tty.h" ! 32: #include "syslog.h" ! 33: ! 34: #include "machine/pte.h" ! 35: #include "../vax/cpu.h" ! 36: #include "mbareg.h" ! 37: #include "mbavar.h" ! 38: #include "htreg.h" ! 39: ! 40: struct buf chtbuf[NHT]; ! 41: ! 42: short httypes[] = ! 43: { MBDT_TM03, MBDT_TE16, MBDT_TU45, MBDT_TU77, 0 }; ! 44: struct mba_device *htinfo[NHT]; ! 45: struct mba_slave *tuinfo[NTU]; ! 46: int htattach(), htslave(), htustart(), htndtint(), htdtint(); ! 47: struct mba_driver htdriver = ! 48: { htattach, htslave, htustart, 0, htdtint, htndtint, ! 49: httypes, "ht", "tu", htinfo }; ! 50: ! 51: #define MASKREG(r) ((r) & 0xffff) ! 52: ! 53: /* bits in minor device */ ! 54: #define TUUNIT(dev) (minor(dev)&03) ! 55: #define H_NOREWIND 04 ! 56: #define H_DENS(dev) ((minor(dev) >> 3) & 03) ! 57: ! 58: #define HTUNIT(dev) (tuinfo[TUUNIT(dev)]->ms_ctlr) ! 59: ! 60: #define INF (daddr_t)1000000L /* a block number that wont exist */ ! 61: ! 62: struct tu_softc { ! 63: char sc_openf; ! 64: char sc_flags; ! 65: daddr_t sc_blkno; ! 66: daddr_t sc_nxrec; ! 67: u_short sc_erreg; ! 68: u_short sc_dsreg; ! 69: short sc_resid; ! 70: short sc_dens; ! 71: caddr_t sc_ctty; /* record user's tty for errors */ ! 72: int sc_blks; /* number of I/O operations since open */ ! 73: int sc_softerrs; /* number of soft I/O errors since open */ ! 74: } tu_softc[NTU]; ! 75: ! 76: /* ! 77: * Bits for sc_flags. ! 78: */ ! 79: #define H_WRITTEN 1 /* last operation was a write */ ! 80: #define H_ERASED 2 /* last write retry was an erase gap */ ! 81: #define H_REWIND 4 /* last unit start was a rewind */ ! 82: ! 83: char hter_bits[] = HTER_BITS; ! 84: char htds_bits[] = HTDS_BITS; ! 85: ! 86: /*ARGSUSED*/ ! 87: htattach(mi) ! 88: struct mba_device *mi; ! 89: { ! 90: ! 91: } ! 92: ! 93: htslave(mi, ms, sn) ! 94: struct mba_device *mi; ! 95: struct mba_slave *ms; ! 96: int sn; ! 97: { ! 98: register struct htdevice *htaddr = (struct htdevice *)mi->mi_drv; ! 99: ! 100: htaddr->httc = sn; ! 101: if (htaddr->htdt & HTDT_SPR) { ! 102: tuinfo[ms->ms_unit] = ms; ! 103: return (1); ! 104: } else ! 105: return (0); ! 106: } ! 107: ! 108: int htdens[4] = { HTTC_800BPI, HTTC_1600BPI, HTTC_6250BPI, HTTC_800BPI }; ! 109: ! 110: htopen(dev, flag) ! 111: dev_t dev; ! 112: int flag; ! 113: { ! 114: register int tuunit; ! 115: register struct tu_softc *sc; ! 116: register struct mba_slave *ms; ! 117: int olddens, dens; ! 118: ! 119: tuunit = TUUNIT(dev); ! 120: if (tuunit >= NTU || (ms = tuinfo[tuunit]) == NULL || ! 121: ms->ms_alive == 0 || htinfo[ms->ms_ctlr]->mi_alive == 0) ! 122: return (ENXIO); ! 123: if ((sc = &tu_softc[tuunit])->sc_openf) ! 124: return (EBUSY); ! 125: sc->sc_openf = 1; ! 126: olddens = sc->sc_dens; ! 127: dens = sc->sc_dens = htdens[H_DENS(dev)] | HTTC_PDP11 | ms->ms_slave; ! 128: htcommand(dev, HT_SENSE, 1); ! 129: sc->sc_dens = olddens; ! 130: if ((sc->sc_dsreg & HTDS_MOL) == 0) { ! 131: sc->sc_openf = 0; ! 132: uprintf("tu%d: not online\n", tuunit); ! 133: return (EIO); ! 134: } ! 135: if ((flag&FWRITE) && (sc->sc_dsreg&HTDS_WRL)) { ! 136: sc->sc_openf = 0; ! 137: uprintf("tu%d: no write ring\n", tuunit); ! 138: return (EIO); ! 139: } ! 140: if ((sc->sc_dsreg & HTDS_BOT) == 0 && (flag&FWRITE) && ! 141: dens != sc->sc_dens) { ! 142: sc->sc_openf = 0; ! 143: uprintf("tu%d: can't change density in mid-tape\n", tuunit); ! 144: return (EIO); ! 145: } ! 146: sc->sc_blkno = (daddr_t)0; ! 147: sc->sc_nxrec = INF; ! 148: sc->sc_flags = 0; ! 149: sc->sc_dens = dens; ! 150: sc->sc_blks = 0; ! 151: sc->sc_softerrs = 0; ! 152: sc->sc_ctty = (caddr_t)(u.u_procp->p_flag&SCTTY ? ! 153: u.u_procp->p_session->s_ttyp : 0); ! 154: return (0); ! 155: } ! 156: ! 157: htclose(dev, flag) ! 158: register dev_t dev; ! 159: register flag; ! 160: { ! 161: register struct tu_softc *sc = &tu_softc[TUUNIT(dev)]; ! 162: ! 163: if (flag == FWRITE || ((flag&FWRITE) && (sc->sc_flags&H_WRITTEN))) { ! 164: htcommand(dev, HT_WEOF, 1); ! 165: htcommand(dev, HT_WEOF, 1); ! 166: htcommand(dev, HT_SREV, 1); ! 167: } ! 168: if ((minor(dev)&H_NOREWIND) == 0) ! 169: htcommand(dev, HT_REW, 0); ! 170: if (sc->sc_blks > 100 && sc->sc_softerrs > sc->sc_blks / 100) ! 171: log(LOG_INFO, "tu%d: %d soft errors in %d blocks\n", ! 172: TUUNIT(dev), sc->sc_softerrs, sc->sc_blks); ! 173: sc->sc_openf = 0; ! 174: return (0); ! 175: } ! 176: ! 177: htcommand(dev, com, count) ! 178: dev_t dev; ! 179: int com, count; ! 180: { ! 181: register struct buf *bp; ! 182: register int s; ! 183: ! 184: bp = &chtbuf[HTUNIT(dev)]; ! 185: s = spl5(); ! 186: while (bp->b_flags&B_BUSY) { ! 187: if(bp->b_repcnt == 0 && (bp->b_flags&B_DONE)) ! 188: break; ! 189: bp->b_flags |= B_WANTED; ! 190: sleep((caddr_t)bp, PRIBIO); ! 191: } ! 192: bp->b_flags = B_BUSY|B_READ; ! 193: splx(s); ! 194: bp->b_dev = dev; ! 195: bp->b_command = com; ! 196: bp->b_repcnt = count; ! 197: bp->b_blkno = 0; ! 198: htstrategy(bp); ! 199: if (count == 0) ! 200: return; ! 201: iowait(bp); ! 202: if (bp->b_flags&B_WANTED) ! 203: wakeup((caddr_t)bp); ! 204: bp->b_flags &= B_ERROR; ! 205: } ! 206: ! 207: htstrategy(bp) ! 208: register struct buf *bp; ! 209: { ! 210: register struct mba_device *mi = htinfo[HTUNIT(bp->b_dev)]; ! 211: register struct buf *dp; ! 212: register int s; ! 213: ! 214: bp->av_forw = NULL; ! 215: dp = &mi->mi_tab; ! 216: s = spl5(); ! 217: if (dp->b_actf == NULL) ! 218: dp->b_actf = bp; ! 219: else ! 220: dp->b_actl->av_forw = bp; ! 221: dp->b_actl = bp; ! 222: if (dp->b_active == 0) ! 223: mbustart(mi); ! 224: splx(s); ! 225: } ! 226: ! 227: htustart(mi) ! 228: register struct mba_device *mi; ! 229: { ! 230: register struct htdevice *htaddr = ! 231: (struct htdevice *)mi->mi_drv; ! 232: register struct buf *bp = mi->mi_tab.b_actf; ! 233: register struct tu_softc *sc = &tu_softc[TUUNIT(bp->b_dev)]; ! 234: daddr_t blkno; ! 235: ! 236: htaddr->httc = sc->sc_dens; ! 237: #ifdef notdef ! 238: /* unneeded, may hang controller */ ! 239: if (bp == &chtbuf[HTUNIT(bp->b_dev)] && bp->b_command == HT_SENSE) { ! 240: htaddr->htcs1 = HT_SENSE|HT_GO; ! 241: mbclrattn(mi); ! 242: } ! 243: #endif ! 244: sc->sc_dsreg = htaddr->htds; ! 245: sc->sc_erreg = htaddr->hter; ! 246: sc->sc_resid = htaddr->htfc; ! 247: sc->sc_flags &= ~(H_WRITTEN|H_REWIND); ! 248: if ((htaddr->htdt & HTDT_SPR) == 0 || (htaddr->htds & HTDS_MOL) == 0) ! 249: if (sc->sc_openf > 0) ! 250: sc->sc_openf = -1; ! 251: if (sc->sc_openf < 0) { ! 252: bp->b_flags |= B_ERROR; ! 253: return (MBU_NEXT); ! 254: } ! 255: if (bp != &chtbuf[HTUNIT(bp->b_dev)]) { ! 256: /* transfer: check positioning */ ! 257: if (bp->b_flags & B_RAW) { ! 258: /* raw transfer: record position for retry */ ! 259: if (mi->mi_tab.b_errcnt == 0) { ! 260: sc->sc_blkno = bdbtofsb(bp->b_blkno); ! 261: sc->sc_nxrec = sc->sc_blkno + 1; ! 262: } ! 263: } else { ! 264: if (bdbtofsb(bp->b_blkno) > sc->sc_nxrec) { ! 265: bp->b_flags |= B_ERROR; ! 266: bp->b_error = ENXIO; ! 267: return (MBU_NEXT); ! 268: } ! 269: if (bdbtofsb(bp->b_blkno) == sc->sc_nxrec && ! 270: bp->b_flags&B_READ) { ! 271: bp->b_resid = bp->b_bcount; ! 272: clrbuf(bp); ! 273: return (MBU_NEXT); ! 274: } ! 275: if ((bp->b_flags&B_READ)==0) ! 276: sc->sc_nxrec = bdbtofsb(bp->b_blkno) + 1; ! 277: } ! 278: } else { ! 279: if (bp->b_command == HT_SENSE) ! 280: return (MBU_NEXT); ! 281: if (bp->b_command == HT_REW) ! 282: sc->sc_flags |= H_REWIND; ! 283: else ! 284: htaddr->htfc = -bp->b_bcount; ! 285: htaddr->htcs1 = bp->b_command|HT_GO; ! 286: return (MBU_STARTED); ! 287: } ! 288: if ((blkno = sc->sc_blkno) == bdbtofsb(bp->b_blkno)) { ! 289: htaddr->htfc = -bp->b_bcount; ! 290: if ((bp->b_flags&B_READ) == 0) { ! 291: if (mi->mi_tab.b_errcnt) { ! 292: if ((sc->sc_flags & H_ERASED) == 0) { ! 293: sc->sc_flags |= H_ERASED; ! 294: htaddr->htcs1 = HT_ERASE | HT_GO; ! 295: return (MBU_STARTED); ! 296: } ! 297: sc->sc_flags &= ~H_ERASED; ! 298: } ! 299: if (htaddr->htds & HTDS_EOT) { ! 300: bp->b_resid = bp->b_bcount; ! 301: bp->b_flags |= B_ERROR; ! 302: return (MBU_NEXT); ! 303: } ! 304: } ! 305: return (MBU_DODATA); ! 306: } ! 307: if (blkno < bdbtofsb(bp->b_blkno)) { ! 308: htaddr->htfc = blkno - bdbtofsb(bp->b_blkno); ! 309: htaddr->htcs1 = HT_SFORW|HT_GO; ! 310: } else { ! 311: htaddr->htfc = bdbtofsb(bp->b_blkno) - blkno; ! 312: htaddr->htcs1 = HT_SREV|HT_GO; ! 313: } ! 314: return (MBU_STARTED); ! 315: } ! 316: ! 317: htdtint(mi, mbsr) ! 318: register struct mba_device *mi; ! 319: int mbsr; ! 320: { ! 321: register struct htdevice *htaddr = (struct htdevice *)mi->mi_drv; ! 322: register struct buf *bp = mi->mi_tab.b_actf; ! 323: register struct tu_softc *sc; ! 324: int ds, er, mbs; ! 325: ! 326: sc = &tu_softc[TUUNIT(bp->b_dev)]; ! 327: ds = sc->sc_dsreg = MASKREG(htaddr->htds); ! 328: er = sc->sc_erreg = MASKREG(htaddr->hter); ! 329: sc->sc_resid = MASKREG(htaddr->htfc); ! 330: mbs = mbsr; ! 331: sc->sc_blkno++; ! 332: if((bp->b_flags & B_READ) == 0) ! 333: sc->sc_flags |= H_WRITTEN; ! 334: if ((ds&(HTDS_ERR|HTDS_MOL)) != HTDS_MOL || mbs & MBSR_EBITS) { ! 335: htaddr->htcs1 = HT_DCLR|HT_GO; ! 336: mbclrattn(mi); ! 337: if (bp->b_flags & B_RAW) { ! 338: er &= ~HTER_FCE; ! 339: mbs &= ~(MBSR_DTABT|MBSR_MBEXC); ! 340: } ! 341: if (bp->b_flags & B_READ && ds & HTDS_PES) ! 342: er &= ~(HTER_CSITM|HTER_CORCRC); ! 343: if (er&HTER_HARD || mbs&MBSR_EBITS || (ds&HTDS_MOL) == 0 || ! 344: er && ++mi->mi_tab.b_errcnt >= 7) { ! 345: if ((ds & HTDS_MOL) == 0 && sc->sc_openf > 0) ! 346: sc->sc_openf = -1; ! 347: if ((er&HTER_HARD) == HTER_FCE && ! 348: (mbs&MBSR_EBITS) == (MBSR_DTABT|MBSR_MBEXC) && ! 349: (ds&HTDS_MOL)) ! 350: goto noprint; ! 351: tprintf(sc->sc_ctty, "tu%d: hard error bn%d mbsr=%b er=%b ds=%b\n", ! 352: TUUNIT(bp->b_dev), bp->b_blkno, ! 353: mbsr, mbsr_bits, ! 354: sc->sc_erreg, hter_bits, ! 355: sc->sc_dsreg, htds_bits); ! 356: noprint: ! 357: bp->b_flags |= B_ERROR; ! 358: return (MBD_DONE); ! 359: } ! 360: if (er) ! 361: return (MBD_RETRY); ! 362: } ! 363: bp->b_resid = 0; ! 364: sc->sc_blks++; ! 365: if (mi->mi_tab.b_errcnt) ! 366: sc->sc_softerrs++; ! 367: if (bp->b_flags & B_READ) ! 368: if (ds&HTDS_TM) { /* must be a read, right? */ ! 369: bp->b_resid = bp->b_bcount; ! 370: sc->sc_nxrec = bdbtofsb(bp->b_blkno); ! 371: } else if(bp->b_bcount > MASKREG(htaddr->htfc)) ! 372: bp->b_resid = bp->b_bcount - MASKREG(htaddr->htfc); ! 373: return (MBD_DONE); ! 374: } ! 375: ! 376: htndtint(mi) ! 377: register struct mba_device *mi; ! 378: { ! 379: register struct htdevice *htaddr = (struct htdevice *)mi->mi_drv; ! 380: register struct buf *bp = mi->mi_tab.b_actf; ! 381: register struct tu_softc *sc; ! 382: int er, ds, fc; ! 383: ! 384: ds = MASKREG(htaddr->htds); ! 385: er = MASKREG(htaddr->hter); ! 386: fc = MASKREG(htaddr->htfc); ! 387: if (er) { ! 388: htaddr->htcs1 = HT_DCLR|HT_GO; ! 389: mbclrattn(mi); ! 390: } ! 391: if (bp == 0) ! 392: return (MBN_SKIP); ! 393: sc = &tu_softc[TUUNIT(bp->b_dev)]; ! 394: sc->sc_dsreg = ds; ! 395: sc->sc_erreg = er; ! 396: sc->sc_resid = fc; ! 397: if (bp == &chtbuf[HTUNIT(bp->b_dev)]) { ! 398: switch ((int)bp->b_command) { ! 399: case HT_REWOFFL: ! 400: /* offline is on purpose; don't do anything special */ ! 401: ds |= HTDS_MOL; ! 402: break; ! 403: case HT_SREV: ! 404: /* if backspace file hit bot, its not an error */ ! 405: if (er == (HTER_NEF|HTER_FCE) && ds&HTDS_BOT && ! 406: bp->b_repcnt == INF) ! 407: er &= ~HTER_NEF; ! 408: break; ! 409: } ! 410: er &= ~HTER_FCE; ! 411: if (er == 0) ! 412: ds &= ~HTDS_ERR; ! 413: } ! 414: if ((ds & (HTDS_ERR|HTDS_MOL)) != HTDS_MOL) { ! 415: if ((ds & HTDS_MOL) == 0 && sc->sc_openf > 0) ! 416: sc->sc_openf = -1; ! 417: tprintf(sc->sc_ctty, "tu%d: hard error bn%d er=%b ds=%b\n", ! 418: TUUNIT(bp->b_dev), bp->b_blkno, ! 419: sc->sc_erreg, hter_bits, sc->sc_dsreg, htds_bits); ! 420: bp->b_flags |= B_ERROR; ! 421: return (MBN_DONE); ! 422: } ! 423: if (bp == &chtbuf[HTUNIT(bp->b_dev)]) { ! 424: if (sc->sc_flags & H_REWIND) ! 425: return (ds & HTDS_BOT ? MBN_DONE : MBN_RETRY); ! 426: bp->b_resid = -sc->sc_resid; ! 427: return (MBN_DONE); ! 428: } ! 429: if (ds & HTDS_TM) ! 430: if (sc->sc_blkno > bdbtofsb(bp->b_blkno)) { ! 431: sc->sc_nxrec = bdbtofsb(bp->b_blkno) - fc; ! 432: sc->sc_blkno = sc->sc_nxrec; ! 433: } else { ! 434: sc->sc_blkno = bdbtofsb(bp->b_blkno) + fc; ! 435: sc->sc_nxrec = sc->sc_blkno - 1; ! 436: } ! 437: else ! 438: sc->sc_blkno = bdbtofsb(bp->b_blkno); ! 439: return (MBN_RETRY); ! 440: } ! 441: ! 442: /*ARGSUSED*/ ! 443: htioctl(dev, cmd, data, flag) ! 444: dev_t dev; ! 445: int cmd; ! 446: caddr_t data; ! 447: int flag; ! 448: { ! 449: register struct tu_softc *sc = &tu_softc[TUUNIT(dev)]; ! 450: register struct buf *bp = &chtbuf[HTUNIT(dev)]; ! 451: register callcount; ! 452: int fcount, error = 0; ! 453: struct mtop *mtop; ! 454: struct mtget *mtget; ! 455: /* we depend of the values and order of the MT codes here */ ! 456: static htops[] = ! 457: {HT_WEOF,HT_SFORW,HT_SREV,HT_SFORW,HT_SREV,HT_REW,HT_REWOFFL,HT_SENSE}; ! 458: ! 459: switch (cmd) { ! 460: ! 461: case MTIOCTOP: /* tape operation */ ! 462: mtop = (struct mtop *)data; ! 463: switch (mtop->mt_op) { ! 464: ! 465: case MTWEOF: ! 466: callcount = mtop->mt_count; ! 467: fcount = 1; ! 468: break; ! 469: ! 470: case MTFSF: case MTBSF: ! 471: callcount = mtop->mt_count; ! 472: fcount = INF; ! 473: break; ! 474: ! 475: case MTFSR: case MTBSR: ! 476: callcount = 1; ! 477: fcount = mtop->mt_count; ! 478: break; ! 479: ! 480: case MTREW: case MTOFFL: ! 481: callcount = 1; ! 482: fcount = 1; ! 483: break; ! 484: ! 485: default: ! 486: return (ENXIO); ! 487: } ! 488: if (callcount <= 0 || fcount <= 0) ! 489: return (EINVAL); ! 490: while (--callcount >= 0) { ! 491: htcommand(dev, htops[mtop->mt_op], fcount); ! 492: if ((mtop->mt_op == MTFSR || mtop->mt_op == MTBSR) && ! 493: bp->b_resid) ! 494: return (EIO); ! 495: if ((bp->b_flags&B_ERROR) || sc->sc_dsreg&HTDS_BOT) ! 496: break; ! 497: } ! 498: if (bp->b_flags&B_ERROR) ! 499: if ((error = bp->b_error)==0) ! 500: return (EIO); ! 501: return (error); ! 502: ! 503: case MTIOCGET: ! 504: mtget = (struct mtget *)data; ! 505: mtget->mt_dsreg = sc->sc_dsreg; ! 506: mtget->mt_erreg = sc->sc_erreg; ! 507: mtget->mt_resid = sc->sc_resid; ! 508: mtget->mt_type = MT_ISHT; ! 509: break; ! 510: ! 511: default: ! 512: return (ENXIO); ! 513: } ! 514: return (0); ! 515: } ! 516: ! 517: #define DBSIZE 20 ! 518: ! 519: htdump() ! 520: { ! 521: register struct mba_device *mi; ! 522: register struct mba_regs *mp; ! 523: register struct htdevice *htaddr; ! 524: int blk, num; ! 525: int start; ! 526: ! 527: start = 0; ! 528: num = maxfree; ! 529: #define phys(a,b) ((b)((int)(a)&0x7fffffff)) ! 530: if (htinfo[0] == 0) ! 531: return (ENXIO); ! 532: mi = phys(htinfo[0], struct mba_device *); ! 533: mp = phys(mi->mi_hd, struct mba_hd *)->mh_physmba; ! 534: mp->mba_cr = MBCR_IE; ! 535: htaddr = (struct htdevice *)&mp->mba_drv[mi->mi_drive]; ! 536: htaddr->httc = HTTC_PDP11|HTTC_1600BPI; ! 537: htaddr->htcs1 = HT_DCLR|HT_GO; ! 538: while (num > 0) { ! 539: blk = num > DBSIZE ? DBSIZE : num; ! 540: htdwrite(start, blk, htaddr, mp); ! 541: start += blk; ! 542: num -= blk; ! 543: } ! 544: hteof(htaddr); ! 545: hteof(htaddr); ! 546: htwait(htaddr); ! 547: if (htaddr->htds&HTDS_ERR) ! 548: return (EIO); ! 549: htaddr->htcs1 = HT_REW|HT_GO; ! 550: return (0); ! 551: } ! 552: ! 553: htdwrite(dbuf, num, htaddr, mp) ! 554: register dbuf, num; ! 555: register struct htdevice *htaddr; ! 556: struct mba_regs *mp; ! 557: { ! 558: register struct pte *io; ! 559: register int i; ! 560: ! 561: htwait(htaddr); ! 562: io = mp->mba_map; ! 563: for (i = 0; i < num; i++) ! 564: *(int *)io++ = dbuf++ | PG_V; ! 565: htaddr->htfc = -(num*NBPG); ! 566: mp->mba_sr = -1; ! 567: mp->mba_bcr = -(num*NBPG); ! 568: mp->mba_var = 0; ! 569: htaddr->htcs1 = HT_WCOM|HT_GO; ! 570: } ! 571: ! 572: htwait(htaddr) ! 573: struct htdevice *htaddr; ! 574: { ! 575: register s; ! 576: ! 577: do ! 578: s = htaddr->htds; ! 579: while ((s & HTDS_DRY) == 0); ! 580: } ! 581: ! 582: hteof(htaddr) ! 583: struct htdevice *htaddr; ! 584: { ! 585: ! 586: htwait(htaddr); ! 587: htaddr->htcs1 = HT_WEOF|HT_GO; ! 588: } ! 589: #endif
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.