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1.1 ! root 1: /* ts.c 6.1 83/07/29 */ ! 2: ! 3: #include "ts.h" ! 4: #if NTS > 0 ! 5: /* ! 6: * TS11 tape driver ! 7: * ! 8: * TODO: ! 9: * write dump code ! 10: */ ! 11: #include "../machine/pte.h" ! 12: ! 13: #include "../h/param.h" ! 14: #include "../h/systm.h" ! 15: #include "../h/buf.h" ! 16: #include "../h/dir.h" ! 17: #include "../h/conf.h" ! 18: #include "../h/user.h" ! 19: #include "../h/file.h" ! 20: #include "../h/map.h" ! 21: #include "../h/vm.h" ! 22: #include "../h/ioctl.h" ! 23: #include "../h/mtio.h" ! 24: #include "../h/cmap.h" ! 25: #include "../h/uio.h" ! 26: ! 27: #include "../vax/cpu.h" ! 28: #include "../vaxuba/ubareg.h" ! 29: #include "../vaxuba/ubavar.h" ! 30: #include "../vaxuba/tsreg.h" ! 31: ! 32: /* ! 33: * There is a ctsbuf per tape controller. ! 34: * It is used as the token to pass to the internal routines ! 35: * to execute tape ioctls. ! 36: * In particular, when the tape is rewinding on close we release ! 37: * the user process but any further attempts to use the tape drive ! 38: * before the rewind completes will hang waiting for ctsbuf. ! 39: */ ! 40: struct buf ctsbuf[NTS]; ! 41: ! 42: /* ! 43: * Raw tape operations use rtsbuf. The driver ! 44: * notices when rtsbuf is being used and allows the user ! 45: * program to continue after errors and read records ! 46: * not of the standard length (BSIZE). ! 47: */ ! 48: struct buf rtsbuf[NTS]; ! 49: ! 50: /* ! 51: * Driver unibus interface routines and variables. ! 52: */ ! 53: int tsprobe(), tsslave(), tsattach(), tsdgo(), tsintr(); ! 54: struct uba_ctlr *tsminfo[NTS]; ! 55: struct uba_device *tsdinfo[NTS]; ! 56: struct buf tsutab[NTS]; ! 57: u_short tsstd[] = { 0772520, 0 }; ! 58: /*** PROBABLY DON'T NEED ALL THESE SINCE CONTROLLER == DRIVE ***/ ! 59: struct uba_driver zsdriver = ! 60: { tsprobe, tsslave, tsattach, tsdgo, tsstd, "ts", tsdinfo, "zs", tsminfo, 0 }; ! 61: ! 62: /* bits in minor device */ ! 63: #define TSUNIT(dev) (minor(dev)&03) ! 64: #define T_NOREWIND 04 ! 65: ! 66: #define INF (daddr_t)1000000L ! 67: ! 68: /* ! 69: * Software state per tape transport. ! 70: * Also contains hardware state in message packets. ! 71: * ! 72: * 1. A tape drive is a unique-open device; we refuse opens when it is already. ! 73: * 2. We keep track of the current position on a block tape and seek ! 74: * before operations by forward/back spacing if necessary. ! 75: * 3. We remember if the last operation was a write on a tape, so if a tape ! 76: * is open read write and the last thing done is a write we can ! 77: * write a standard end of tape mark (two eofs). ! 78: * 4. We remember the status registers after the last command, using ! 79: * then internally and returning them to the SENSE ioctl. ! 80: */ ! 81: struct ts_softc { ! 82: char sc_openf; /* lock against multiple opens */ ! 83: char sc_lastiow; /* last op was a write */ ! 84: short sc_resid; /* copy of last bc */ ! 85: daddr_t sc_blkno; /* block number, for block device tape */ ! 86: daddr_t sc_nxrec; /* position of end of tape, if known */ ! 87: struct ts_cmd sc_cmd; /* the command packet */ ! 88: struct ts_sts sc_sts; /* status packet, for returned status */ ! 89: struct ts_char sc_char; /* characteristics packet */ ! 90: struct ts_softc *sc_ubaddr; /* Unibus address of ts_softc structure */ ! 91: u_short sc_uba; /* Unibus addr of cmd pkt for tsdb */ ! 92: short sc_mapped; /* is ts_sfotc mapped in Unibus space? */ ! 93: } ts_softc[NTS]; ! 94: ! 95: /* ! 96: * States for um->um_tab.b_active, the per controller state flag. ! 97: * This is used to sequence control in the driver. ! 98: */ ! 99: #define SSEEK 1 /* seeking */ ! 100: #define SIO 2 /* doing seq i/o */ ! 101: #define SCOM 3 /* sending control command */ ! 102: #define SREW 4 /* sending a drive rewind */ ! 103: ! 104: /* ! 105: * Determine if there is a controller for ! 106: * a ts at address reg. Our goal is to make the ! 107: * device interrupt. ! 108: */ ! 109: /*ARGSUSED*/ ! 110: tsprobe(reg) ! 111: caddr_t reg; ! 112: { ! 113: register int br, cvec; /* must be r11,r10; value-result */ ! 114: ! 115: #ifdef lint ! 116: br = 0; cvec = br; br = cvec; ! 117: tsintr(0); ! 118: #endif ! 119: ((struct tsdevice *)reg)->tssr = 0; ! 120: DELAY(100); ! 121: if ((((struct tsdevice *)reg)->tssr & TS_NBA) == 0) ! 122: return(0); ! 123: /* IT'S TOO HARD TO MAKE THIS THING INTERRUPT JUST TO FIND ITS VECTOR */ ! 124: cvec = ((unsigned)reg) & 07 ? 0260 : 0224; ! 125: br = 0x15; ! 126: return (sizeof (struct tsdevice)); ! 127: } ! 128: ! 129: /* ! 130: * TS11 only supports one drive per controller; ! 131: * check for ui_slave == 0. ! 132: * ! 133: * DO WE REALLY NEED THIS ROUTINE??? ! 134: */ ! 135: /*ARGSUSED*/ ! 136: tsslave(ui, reg) ! 137: struct uba_device *ui; ! 138: caddr_t reg; ! 139: { ! 140: ! 141: if (ui->ui_slave) /* non-zero slave not allowed */ ! 142: return(0); ! 143: return (1); ! 144: } ! 145: ! 146: /* ! 147: * Record attachment of the unit to the controller. ! 148: * ! 149: * SHOULD THIS ROUTINE DO ANYTHING??? ! 150: */ ! 151: /*ARGSUSED*/ ! 152: tsattach(ui) ! 153: struct uba_device *ui; ! 154: { ! 155: ! 156: } ! 157: ! 158: /* ! 159: * Open the device. Tapes are unique open ! 160: * devices, so we refuse if it is already open. ! 161: * We also check that a tape is available, and ! 162: * don't block waiting here; if you want to wait ! 163: * for a tape you should timeout in user code. ! 164: */ ! 165: tsopen(dev, flag) ! 166: dev_t dev; ! 167: int flag; ! 168: { ! 169: register int tsunit; ! 170: register struct uba_device *ui; ! 171: register struct ts_softc *sc; ! 172: ! 173: tsunit = TSUNIT(dev); ! 174: if (tsunit>=NTS || (sc = &ts_softc[tsunit])->sc_openf || ! 175: (ui = tsdinfo[tsunit]) == 0 || ui->ui_alive == 0) ! 176: return (ENXIO); ! 177: if (tsinit(tsunit)) ! 178: return (ENXIO); ! 179: tscommand(dev, TS_SENSE, 1); ! 180: if ((sc->sc_sts.s_xs0&TS_ONL) == 0) { ! 181: uprintf("ts%d: not online\n", tsunit); ! 182: return (EIO); ! 183: } ! 184: if ((flag&(FREAD|FWRITE)) == FWRITE && (sc->sc_sts.s_xs0&TS_WLK)) { ! 185: uprintf("ts%d: no write ring\n", tsunit); ! 186: return (EIO); ! 187: } ! 188: sc->sc_openf = 1; ! 189: sc->sc_blkno = (daddr_t)0; ! 190: sc->sc_nxrec = INF; ! 191: sc->sc_lastiow = 0; ! 192: return (0); ! 193: } ! 194: ! 195: /* ! 196: * Close tape device. ! 197: * ! 198: * If tape was open for writing or last operation was ! 199: * a write, then write two EOF's and backspace over the last one. ! 200: * Unless this is a non-rewinding special file, rewind the tape. ! 201: * Make the tape available to others. ! 202: */ ! 203: tsclose(dev, flag) ! 204: register dev_t dev; ! 205: register flag; ! 206: { ! 207: register struct ts_softc *sc = &ts_softc[TSUNIT(dev)]; ! 208: ! 209: if (flag == FWRITE || (flag&FWRITE) && sc->sc_lastiow) { ! 210: tscommand(dev, TS_WEOF, 1); ! 211: tscommand(dev, TS_WEOF, 1); ! 212: tscommand(dev, TS_SREV, 1); ! 213: } ! 214: if ((minor(dev)&T_NOREWIND) == 0) ! 215: /* ! 216: * 0 count means don't hang waiting for rewind complete ! 217: * rather ctsbuf stays busy until the operation completes ! 218: * preventing further opens from completing by ! 219: * preventing a TS_SENSE from completing. ! 220: */ ! 221: tscommand(dev, TS_REW, 0); ! 222: sc->sc_openf = 0; ! 223: } ! 224: ! 225: /* ! 226: * Initialize the TS11. Set up Unibus mapping for command ! 227: * packets and set device characteristics. ! 228: */ ! 229: tsinit(unit) ! 230: register int unit; ! 231: { ! 232: register struct ts_softc *sc = &ts_softc[unit]; ! 233: register struct uba_ctlr *um = tsminfo[unit]; ! 234: register struct tsdevice *addr = (struct tsdevice *)um->um_addr; ! 235: register int i; ! 236: ! 237: /* ! 238: * Map the command and message packets into Unibus ! 239: * address space. We do all the command and message ! 240: * packets at once to minimize the amount of Unibus ! 241: * mapping necessary. ! 242: */ ! 243: if (sc->sc_mapped == 0) { ! 244: ctsbuf[unit].b_un.b_addr = (caddr_t)sc; ! 245: ctsbuf[unit].b_bcount = sizeof(*sc); ! 246: i = ubasetup(um->um_ubanum, &ctsbuf[unit], 0); ! 247: i &= 0777777; ! 248: sc->sc_ubaddr = (struct ts_softc *)i; ! 249: sc->sc_mapped++; ! 250: } ! 251: /* ! 252: * Now initialize the TS11 controller. ! 253: * Set the characteristics. ! 254: */ ! 255: if (addr->tssr & (TS_NBA|TS_OFL)) { ! 256: addr->tssr = 0; /* subsystem initialize */ ! 257: tswait(addr); ! 258: i = (int)&sc->sc_ubaddr->sc_cmd; /* Unibus addr of cmd */ ! 259: sc->sc_uba = (u_short)(i + ((i>>16)&3)); ! 260: sc->sc_char.char_addr = (int)&sc->sc_ubaddr->sc_sts; ! 261: sc->sc_char.char_size = sizeof(struct ts_sts); ! 262: sc->sc_char.char_mode = TS_ESS; ! 263: sc->sc_cmd.c_cmd = TS_ACK | TS_SETCHR; ! 264: i = (int)&sc->sc_ubaddr->sc_char; ! 265: sc->sc_cmd.c_loba = i; ! 266: sc->sc_cmd.c_hiba = (i>>16)&3; ! 267: sc->sc_cmd.c_size = sizeof(struct ts_char); ! 268: addr->tsdb = sc->sc_uba; ! 269: tswait(addr); ! 270: if (addr->tssr & TS_NBA) ! 271: return(1); ! 272: } ! 273: return(0); ! 274: } ! 275: ! 276: /* ! 277: * Execute a command on the tape drive ! 278: * a specified number of times. ! 279: */ ! 280: tscommand(dev, com, count) ! 281: dev_t dev; ! 282: int com, count; ! 283: { ! 284: register struct buf *bp; ! 285: register int s; ! 286: ! 287: bp = &ctsbuf[TSUNIT(dev)]; ! 288: s = spl5(); ! 289: while (bp->b_flags&B_BUSY) { ! 290: /* ! 291: * This special check is because B_BUSY never ! 292: * gets cleared in the non-waiting rewind case. ! 293: */ ! 294: if (bp->b_repcnt == 0 && (bp->b_flags&B_DONE)) ! 295: break; ! 296: bp->b_flags |= B_WANTED; ! 297: sleep((caddr_t)bp, PRIBIO); ! 298: } ! 299: bp->b_flags = B_BUSY|B_READ; ! 300: splx(s); ! 301: bp->b_dev = dev; ! 302: bp->b_repcnt = count; ! 303: bp->b_command = com; ! 304: bp->b_blkno = 0; ! 305: tsstrategy(bp); ! 306: /* ! 307: * In case of rewind from close, don't wait. ! 308: * This is the only case where count can be 0. ! 309: */ ! 310: if (count == 0) ! 311: return; ! 312: iowait(bp); ! 313: if (bp->b_flags&B_WANTED) ! 314: wakeup((caddr_t)bp); ! 315: bp->b_flags &= B_ERROR; ! 316: } ! 317: ! 318: /* ! 319: * Queue a tape operation. ! 320: */ ! 321: tsstrategy(bp) ! 322: register struct buf *bp; ! 323: { ! 324: int tsunit = TSUNIT(bp->b_dev); ! 325: register struct uba_ctlr *um; ! 326: register struct buf *dp; ! 327: register int s; ! 328: ! 329: /* ! 330: * Put transfer at end of controller queue ! 331: */ ! 332: bp->av_forw = NULL; ! 333: um = tsdinfo[tsunit]->ui_mi; ! 334: s = spl5(); ! 335: dp = &tsutab[tsunit]; ! 336: if (dp->b_actf == NULL) ! 337: dp->b_actf = bp; ! 338: else ! 339: dp->b_actl->av_forw = bp; ! 340: dp->b_actl = bp; ! 341: um->um_tab.b_actf = um->um_tab.b_actl = dp; ! 342: /* ! 343: * If the controller is not busy, get ! 344: * it going. ! 345: */ ! 346: if (um->um_tab.b_active == 0) ! 347: tsstart(um); ! 348: splx(s); ! 349: } ! 350: ! 351: /* ! 352: * Start activity on a ts controller. ! 353: */ ! 354: tsstart(um) ! 355: register struct uba_ctlr *um; ! 356: { ! 357: register struct buf *bp; ! 358: register struct tsdevice *addr = (struct tsdevice *)um->um_addr; ! 359: register struct ts_softc *sc; ! 360: register struct ts_cmd *tc; ! 361: register struct uba_device *ui; ! 362: int tsunit, cmd; ! 363: daddr_t blkno; ! 364: ! 365: /* ! 366: * Start the controller if there is something for it to do. ! 367: */ ! 368: loop: ! 369: if ((bp = um->um_tab.b_actf->b_actf) == NULL) ! 370: return; ! 371: tsunit = TSUNIT(bp->b_dev); ! 372: ui = tsdinfo[tsunit]; ! 373: sc = &ts_softc[tsunit]; ! 374: tc = &sc->sc_cmd; ! 375: /* ! 376: * Default is that last command was NOT a write command; ! 377: * if we do a write command we will notice this in tsintr(). ! 378: */ ! 379: sc->sc_lastiow = 0; ! 380: if (sc->sc_openf < 0 || (addr->tssr&TS_OFL)) { ! 381: /* ! 382: * Have had a hard error on a non-raw tape ! 383: * or the tape unit is now unavailable ! 384: * (e.g. taken off line). ! 385: */ ! 386: bp->b_flags |= B_ERROR; ! 387: goto next; ! 388: } ! 389: if (bp == &ctsbuf[TSUNIT(bp->b_dev)]) { ! 390: /* ! 391: * Execute control operation with the specified count. ! 392: */ ! 393: um->um_tab.b_active = ! 394: bp->b_command == TS_REW ? SREW : SCOM; ! 395: tc->c_repcnt = bp->b_repcnt; ! 396: goto dobpcmd; ! 397: } ! 398: /* ! 399: * The following checks handle boundary cases for operation ! 400: * on non-raw tapes. On raw tapes the initialization of ! 401: * sc->sc_nxrec by tsphys causes them to be skipped normally ! 402: * (except in the case of retries). ! 403: */ ! 404: if (bdbtofsb(bp->b_blkno) > sc->sc_nxrec) { ! 405: /* ! 406: * Can't read past known end-of-file. ! 407: */ ! 408: bp->b_flags |= B_ERROR; ! 409: bp->b_error = ENXIO; ! 410: goto next; ! 411: } ! 412: if (bdbtofsb(bp->b_blkno) == sc->sc_nxrec && ! 413: bp->b_flags&B_READ) { ! 414: /* ! 415: * Reading at end of file returns 0 bytes. ! 416: */ ! 417: bp->b_resid = bp->b_bcount; ! 418: clrbuf(bp); ! 419: goto next; ! 420: } ! 421: if ((bp->b_flags&B_READ) == 0) ! 422: /* ! 423: * Writing sets EOF ! 424: */ ! 425: sc->sc_nxrec = bdbtofsb(bp->b_blkno) + 1; ! 426: /* ! 427: * If the data transfer command is in the correct place, ! 428: * set up all the registers except the csr, and give ! 429: * control over to the UNIBUS adapter routines, to ! 430: * wait for resources to start the i/o. ! 431: */ ! 432: if ((blkno = sc->sc_blkno) == bdbtofsb(bp->b_blkno)) { ! 433: tc->c_size = bp->b_bcount; ! 434: if ((bp->b_flags&B_READ) == 0) ! 435: cmd = TS_WCOM; ! 436: else ! 437: cmd = TS_RCOM; ! 438: if (um->um_tab.b_errcnt) ! 439: cmd |= TS_RETRY; ! 440: um->um_tab.b_active = SIO; ! 441: tc->c_cmd = TS_ACK | TS_CVC | TS_IE | cmd; ! 442: (void) ubago(ui); ! 443: return; ! 444: } ! 445: /* ! 446: * Tape positioned incorrectly; ! 447: * set to seek forwards or backwards to the correct spot. ! 448: * This happens for raw tapes only on error retries. ! 449: */ ! 450: um->um_tab.b_active = SSEEK; ! 451: if (blkno < bdbtofsb(bp->b_blkno)) { ! 452: bp->b_command = TS_SFORW; ! 453: tc->c_repcnt = bdbtofsb(bp->b_blkno) - blkno; ! 454: } else { ! 455: bp->b_command = TS_SREV; ! 456: tc->c_repcnt = blkno - bdbtofsb(bp->b_blkno); ! 457: } ! 458: dobpcmd: ! 459: /* ! 460: * Do the command in bp. ! 461: */ ! 462: tc->c_cmd = TS_ACK | TS_CVC | TS_IE | bp->b_command; ! 463: addr->tsdb = sc->sc_uba; ! 464: return; ! 465: ! 466: next: ! 467: /* ! 468: * Done with this operation due to error or ! 469: * the fact that it doesn't do anything. ! 470: * Release UBA resources (if any), dequeue ! 471: * the transfer and continue processing this slave. ! 472: */ ! 473: if (um->um_ubinfo) ! 474: ubadone(um); ! 475: um->um_tab.b_errcnt = 0; ! 476: um->um_tab.b_actf->b_actf = bp->av_forw; ! 477: iodone(bp); ! 478: goto loop; ! 479: } ! 480: ! 481: /* ! 482: * The UNIBUS resources we needed have been ! 483: * allocated to us; start the device. ! 484: */ ! 485: tsdgo(um) ! 486: register struct uba_ctlr *um; ! 487: { ! 488: register struct tsdevice *addr = (struct tsdevice *)um->um_addr; ! 489: register struct ts_softc *sc = &ts_softc[um->um_ctlr]; ! 490: register int i; ! 491: ! 492: i = um->um_ubinfo & 0777777; ! 493: sc->sc_cmd.c_loba = i; ! 494: sc->sc_cmd.c_hiba = (i>>16)&3; ! 495: addr->tsdb = sc->sc_uba; ! 496: } ! 497: ! 498: /* ! 499: * Ts interrupt routine. ! 500: */ ! 501: /*ARGSUSED*/ ! 502: tsintr(ts11) ! 503: int ts11; ! 504: { ! 505: register struct buf *bp; ! 506: register struct uba_ctlr *um = tsminfo[ts11]; ! 507: register struct tsdevice *addr; ! 508: register struct ts_softc *sc; ! 509: int tsunit; ! 510: register state; ! 511: ! 512: if ((bp = um->um_tab.b_actf->b_actf) == NULL) ! 513: return; ! 514: tsunit = TSUNIT(bp->b_dev); ! 515: addr = (struct tsdevice *)tsdinfo[tsunit]->ui_addr; ! 516: /* ! 517: * If last command was a rewind, and tape is still ! 518: * rewinding, wait for the rewind complete interrupt. ! 519: * ! 520: * SHOULD NEVER GET AN INTERRUPT IN THIS STATE. ! 521: */ ! 522: if (um->um_tab.b_active == SREW) { ! 523: um->um_tab.b_active = SCOM; ! 524: if ((addr->tssr&TS_SSR) == 0) ! 525: return; ! 526: } ! 527: /* ! 528: * An operation completed... record status ! 529: */ ! 530: sc = &ts_softc[tsunit]; ! 531: if ((bp->b_flags & B_READ) == 0) ! 532: sc->sc_lastiow = 1; ! 533: state = um->um_tab.b_active; ! 534: um->um_tab.b_active = 0; ! 535: /* ! 536: * Check for errors. ! 537: */ ! 538: if (addr->tssr&TS_SC) { ! 539: switch (addr->tssr & TS_TC) { ! 540: case TS_UNREC: /* unrecoverable */ ! 541: case TS_FATAL: /* fatal error */ ! 542: case TS_ATTN: /* attention (shouldn't happen) */ ! 543: case TS_RECNM: /* recoverable, no motion */ ! 544: break; ! 545: ! 546: case TS_SUCC: /* success termination */ ! 547: printf("ts%d: success\n", TSUNIT(minor(bp->b_dev))); ! 548: goto ignoreerr; ! 549: ! 550: case TS_ALERT: /* tape status alert */ ! 551: /* ! 552: * If we hit the end of the tape file, ! 553: * update our position. ! 554: */ ! 555: if (sc->sc_sts.s_xs0 & (TS_TMK|TS_EOT)) { ! 556: tsseteof(bp); /* set blkno and nxrec */ ! 557: state = SCOM; /* force completion */ ! 558: /* ! 559: * Stuff bc so it will be unstuffed correctly ! 560: * later to get resid. ! 561: */ ! 562: sc->sc_sts.s_rbpcr = bp->b_bcount; ! 563: goto opdone; ! 564: } ! 565: /* ! 566: * If we were reading raw tape and the record was too long ! 567: * or too short, then we don't consider this an error. ! 568: */ ! 569: if (bp == &rtsbuf[TSUNIT(bp->b_dev)] && (bp->b_flags&B_READ) && ! 570: sc->sc_sts.s_xs0&(TS_RLS|TS_RLL)) ! 571: goto ignoreerr; ! 572: case TS_RECOV: /* recoverable, tape moved */ ! 573: /* ! 574: * If this was an i/o operation retry up to 8 times. ! 575: */ ! 576: if (state==SIO) { ! 577: if (++um->um_tab.b_errcnt < 7) { ! 578: ubadone(um); ! 579: goto opcont; ! 580: } else ! 581: sc->sc_blkno++; ! 582: } else { ! 583: /* ! 584: * Non-i/o errors on non-raw tape ! 585: * cause it to close. ! 586: */ ! 587: if (sc->sc_openf>0 && bp != &rtsbuf[TSUNIT(bp->b_dev)]) ! 588: sc->sc_openf = -1; ! 589: } ! 590: break; ! 591: ! 592: case TS_REJECT: /* function reject */ ! 593: if (state == SIO && sc->sc_sts.s_xs0 & TS_WLE) ! 594: printf("ts%d: write locked\n", TSUNIT(bp->b_dev)); ! 595: if ((sc->sc_sts.s_xs0 & TS_ONL) == 0) ! 596: printf("ts%d: offline\n", TSUNIT(bp->b_dev)); ! 597: break; ! 598: } ! 599: /* ! 600: * Couldn't recover error ! 601: */ ! 602: printf("ts%d: hard error bn%d xs0=%b", TSUNIT(bp->b_dev), ! 603: bp->b_blkno, sc->sc_sts.s_xs0, TSXS0_BITS); ! 604: if (sc->sc_sts.s_xs1) ! 605: printf(" xs1=%b", sc->sc_sts.s_xs1, TSXS1_BITS); ! 606: if (sc->sc_sts.s_xs2) ! 607: printf(" xs2=%b", sc->sc_sts.s_xs2, TSXS2_BITS); ! 608: if (sc->sc_sts.s_xs3) ! 609: printf(" xs3=%b", sc->sc_sts.s_xs3, TSXS3_BITS); ! 610: printf("\n"); ! 611: bp->b_flags |= B_ERROR; ! 612: goto opdone; ! 613: } ! 614: /* ! 615: * Advance tape control FSM. ! 616: */ ! 617: ignoreerr: ! 618: switch (state) { ! 619: ! 620: case SIO: ! 621: /* ! 622: * Read/write increments tape block number ! 623: */ ! 624: sc->sc_blkno++; ! 625: goto opdone; ! 626: ! 627: case SCOM: ! 628: /* ! 629: * For forward/backward space record update current position. ! 630: */ ! 631: if (bp == &ctsbuf[TSUNIT(bp->b_dev)]) ! 632: switch (bp->b_command) { ! 633: ! 634: case TS_SFORW: ! 635: sc->sc_blkno += bp->b_repcnt; ! 636: break; ! 637: ! 638: case TS_SREV: ! 639: sc->sc_blkno -= bp->b_repcnt; ! 640: break; ! 641: } ! 642: goto opdone; ! 643: ! 644: case SSEEK: ! 645: sc->sc_blkno = bdbtofsb(bp->b_blkno); ! 646: goto opcont; ! 647: ! 648: default: ! 649: panic("tsintr"); ! 650: } ! 651: opdone: ! 652: /* ! 653: * Reset error count and remove ! 654: * from device queue. ! 655: */ ! 656: um->um_tab.b_errcnt = 0; ! 657: um->um_tab.b_actf->b_actf = bp->av_forw; ! 658: bp->b_resid = sc->sc_sts.s_rbpcr; ! 659: ubadone(um); ! 660: iodone(bp); ! 661: if (um->um_tab.b_actf->b_actf == 0) ! 662: return; ! 663: opcont: ! 664: tsstart(um); ! 665: } ! 666: ! 667: tsseteof(bp) ! 668: register struct buf *bp; ! 669: { ! 670: register int tsunit = TSUNIT(bp->b_dev); ! 671: register struct ts_softc *sc = &ts_softc[tsunit]; ! 672: ! 673: if (bp == &ctsbuf[TSUNIT(bp->b_dev)]) { ! 674: if (sc->sc_blkno > bdbtofsb(bp->b_blkno)) { ! 675: /* reversing */ ! 676: sc->sc_nxrec = bdbtofsb(bp->b_blkno) - sc->sc_sts.s_rbpcr; ! 677: sc->sc_blkno = sc->sc_nxrec; ! 678: } else { ! 679: /* spacing forward */ ! 680: sc->sc_blkno = bdbtofsb(bp->b_blkno) + sc->sc_sts.s_rbpcr; ! 681: sc->sc_nxrec = sc->sc_blkno - 1; ! 682: } ! 683: return; ! 684: } ! 685: /* eof on read */ ! 686: sc->sc_nxrec = bdbtofsb(bp->b_blkno); ! 687: } ! 688: ! 689: tsread(dev, uio) ! 690: dev_t dev; ! 691: struct uio *uio; ! 692: { ! 693: int errno; ! 694: ! 695: errno = tsphys(dev, uio); ! 696: if (errno) ! 697: return (errno); ! 698: return (physio(tsstrategy, &rtsbuf[TSUNIT(dev)], dev, B_READ, minphys, uio)); ! 699: } ! 700: ! 701: tswrite(dev, uio) ! 702: dev_t dev; ! 703: struct uio *uio; ! 704: { ! 705: int errno; ! 706: ! 707: errno = tsphys(dev, uio); ! 708: if (errno) ! 709: return (errno); ! 710: return (physio(tsstrategy, &rtsbuf[TSUNIT(dev)], dev, B_WRITE, minphys, uio)); ! 711: } ! 712: ! 713: /* ! 714: * Check that a raw device exists. ! 715: * If it does, set up sc_blkno and sc_nxrec ! 716: * so that the tape will appear positioned correctly. ! 717: */ ! 718: tsphys(dev, uio) ! 719: dev_t dev; ! 720: struct uio *uio; ! 721: { ! 722: register int tsunit = TSUNIT(dev); ! 723: register daddr_t a; ! 724: register struct ts_softc *sc; ! 725: register struct uba_device *ui; ! 726: ! 727: if (tsunit >= NTS || (ui=tsdinfo[tsunit]) == 0 || ui->ui_alive == 0) ! 728: return (ENXIO); ! 729: sc = &ts_softc[tsunit]; ! 730: a = bdbtofsb(uio->uio_offset >> 9); ! 731: sc->sc_blkno = a; ! 732: sc->sc_nxrec = a + 1; ! 733: return (0); ! 734: } ! 735: ! 736: tsreset(uban) ! 737: int uban; ! 738: { ! 739: register struct uba_ctlr *um; ! 740: register struct uba_device *ui; ! 741: register struct buf *dp; ! 742: register ts11; ! 743: ! 744: for (ts11 = 0; ts11 < NTS; ts11++) { ! 745: if ((um = tsminfo[ts11]) == 0 || um->um_alive == 0 || ! 746: um->um_ubanum != uban) ! 747: continue; ! 748: printf(" ts%d", ts11); ! 749: um->um_tab.b_active = 0; ! 750: um->um_tab.b_actf = um->um_tab.b_actl = 0; ! 751: if (ts_softc[ts11].sc_openf > 0) ! 752: ts_softc[ts11].sc_openf = -1; ! 753: if (um->um_ubinfo) { ! 754: printf("<%d>", (um->um_ubinfo>>28)&0xf); ! 755: um->um_ubinfo = 0; ! 756: } ! 757: if ((ui = tsdinfo[ts11]) && ui->ui_mi == um && ui->ui_alive) { ! 758: dp = &tsutab[ts11]; ! 759: dp->b_active = 0; ! 760: dp->b_forw = 0; ! 761: if (um->um_tab.b_actf == NULL) ! 762: um->um_tab.b_actf = dp; ! 763: else ! 764: um->um_tab.b_actl->b_forw = dp; ! 765: um->um_tab.b_actl = dp; ! 766: } ! 767: (void) tsinit(ts11); ! 768: tsstart(um); ! 769: } ! 770: } ! 771: ! 772: /*ARGSUSED*/ ! 773: tsioctl(dev, cmd, data, flag) ! 774: caddr_t data; ! 775: dev_t dev; ! 776: { ! 777: int tsunit = TSUNIT(dev); ! 778: register struct ts_softc *sc = &ts_softc[tsunit]; ! 779: register struct buf *bp = &ctsbuf[TSUNIT(dev)]; ! 780: register callcount; ! 781: int fcount; ! 782: struct mtop *mtop; ! 783: struct mtget *mtget; ! 784: /* we depend of the values and order of the MT codes here */ ! 785: static tsops[] = ! 786: {TS_WEOF,TS_SFORWF,TS_SREVF,TS_SFORW,TS_SREV,TS_REW,TS_OFFL,TS_SENSE}; ! 787: ! 788: switch (cmd) { ! 789: ! 790: case MTIOCTOP: /* tape operation */ ! 791: mtop = (struct mtop *)data; ! 792: switch (mtop->mt_op) { ! 793: ! 794: case MTWEOF: ! 795: callcount = mtop->mt_count; ! 796: fcount = 1; ! 797: break; ! 798: ! 799: case MTFSF: case MTBSF: ! 800: case MTFSR: case MTBSR: ! 801: callcount = 1; ! 802: fcount = mtop->mt_count; ! 803: break; ! 804: ! 805: case MTREW: case MTOFFL: case MTNOP: ! 806: callcount = 1; ! 807: fcount = 1; ! 808: break; ! 809: ! 810: default: ! 811: return (ENXIO); ! 812: } ! 813: if (callcount <= 0 || fcount <= 0) ! 814: return (EINVAL); ! 815: while (--callcount >= 0) { ! 816: tscommand(dev, tsops[mtop->mt_op], fcount); ! 817: if ((mtop->mt_op == MTFSR || mtop->mt_op == MTBSR) && ! 818: bp->b_resid) ! 819: return (EIO); ! 820: if ((bp->b_flags&B_ERROR) || sc->sc_sts.s_xs0&TS_BOT) ! 821: break; ! 822: } ! 823: return (geterror(bp)); ! 824: ! 825: case MTIOCGET: ! 826: mtget = (struct mtget *)data; ! 827: mtget->mt_dsreg = 0; ! 828: mtget->mt_erreg = sc->sc_sts.s_xs0; ! 829: mtget->mt_resid = sc->sc_resid; ! 830: mtget->mt_type = MT_ISTS; ! 831: break; ! 832: ! 833: default: ! 834: return (ENXIO); ! 835: } ! 836: return (0); ! 837: } ! 838: ! 839: #define DBSIZE 20 ! 840: ! 841: tsdump() ! 842: { ! 843: register struct uba_device *ui; ! 844: register struct uba_regs *up; ! 845: register struct tsdevice *addr; ! 846: int blk, num; ! 847: int start; ! 848: ! 849: start = 0; ! 850: num = maxfree; ! 851: #define phys(a,b) ((b)((int)(a)&0x7fffffff)) ! 852: if (tsdinfo[0] == 0) ! 853: return (ENXIO); ! 854: ui = phys(tsdinfo[0], struct uba_device *); ! 855: up = phys(ui->ui_hd, struct uba_hd *)->uh_physuba; ! 856: ubainit(up); ! 857: DELAY(1000000); ! 858: addr = (struct tsdevice *)ui->ui_physaddr; ! 859: addr->tssr = 0; ! 860: tswait(addr); ! 861: while (num > 0) { ! 862: blk = num > DBSIZE ? DBSIZE : num; ! 863: tsdwrite(start, blk, addr, up); ! 864: start += blk; ! 865: num -= blk; ! 866: } ! 867: tseof(addr); ! 868: tseof(addr); ! 869: tswait(addr); ! 870: if (addr->tssr&TS_SC) ! 871: return (EIO); ! 872: addr->tssr = 0; ! 873: tswait(addr); ! 874: return (0); ! 875: } ! 876: ! 877: tsdwrite(dbuf, num, addr, up) ! 878: register int dbuf, num; ! 879: register struct tsdevice *addr; ! 880: struct uba_regs *up; ! 881: { ! 882: register struct pte *io; ! 883: register int npf; ! 884: ! 885: tswait(addr); ! 886: io = up->uba_map; ! 887: npf = num+1; ! 888: while (--npf != 0) ! 889: *(int *)io++ = (dbuf++ | (1<<UBAMR_DPSHIFT) | UBAMR_MRV); ! 890: *(int *)io = 0; ! 891: #ifdef notyet ! 892: addr->tsbc = -(num*NBPG); ! 893: addr->tsba = 0; ! 894: addr->tscs = TS_WCOM | TM_GO; ! 895: #endif ! 896: } ! 897: ! 898: tswait(addr) ! 899: register struct tsdevice *addr; ! 900: { ! 901: register s; ! 902: ! 903: do ! 904: s = addr->tssr; ! 905: while ((s & TS_SSR) == 0); ! 906: } ! 907: ! 908: tseof(addr) ! 909: struct tsdevice *addr; ! 910: { ! 911: ! 912: tswait(addr); ! 913: #ifdef notyet ! 914: addr->tscs = TS_WEOF | TM_GO; ! 915: #endif ! 916: } ! 917: #endif
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