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Annotation of 43BSDReno/sys/vaxuba/dmf.c, revision 1.1

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:  *     @(#)dmf.c       7.12 (Berkeley) 4/12/90
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * DMF32 driver
        !            11:  *
        !            12:  *
        !            13:  * TODO:
        !            14:  *     test with modem
        !            15:  *     load as much as possible into silo
        !            16:  *     use auto XON/XOFF
        !            17:  *     test reset code
        !            18:  */
        !            19: #include "dmf.h"
        !            20: #if NDMF > 0
        !            21: 
        !            22: #ifndef NDMF_LP
        !            23: #define        NDMF_LP NDMF
        !            24: #endif NDMF_LP
        !            25: #include "machine/pte.h"
        !            26: 
        !            27: #include "uba.h"
        !            28: #include "param.h"
        !            29: #include "conf.h"
        !            30: #include "user.h"
        !            31: #include "proc.h"
        !            32: #include "ioctl.h"
        !            33: #include "tty.h"
        !            34: #include "map.h"
        !            35: #include "buf.h"
        !            36: #include "vm.h"
        !            37: #include "bkmac.h"
        !            38: #include "clist.h"
        !            39: #include "file.h"
        !            40: #include "uio.h"
        !            41: #include "kernel.h"
        !            42: #include "syslog.h"
        !            43: 
        !            44: #include "dmx.h"
        !            45: #include "ubareg.h"
        !            46: #include "ubavar.h"
        !            47: #include "dmxreg.h"
        !            48: #include "dmfreg.h"
        !            49: #include "dmreg.h"
        !            50: 
        !            51: extern int dmx_timeout;                /* silo timeout, in ms */
        !            52: int    dmfstart();
        !            53: 
        !            54: /*
        !            55:  * The clist space is mapped by one terminal driver onto each UNIBUS.
        !            56:  * The identity of the board which allocated resources is recorded,
        !            57:  * so the process may be repeated after UNIBUS resets.
        !            58:  * The UBACVT macro converts a clist space address for unibus uban
        !            59:  * into an i/o space address for the DMA routine.
        !            60:  */
        !            61: int    dmf_uballoc[NUBA];      /* which dmf (if any) allocated unibus map */
        !            62: int    cbase[NUBA];            /* base address of clists in unibus map */
        !            63: 
        !            64: /*
        !            65:  * Autoconfiguration and variables for DMF32
        !            66:  */
        !            67: int    dmfprobe(), dmfattach(), dmfrint(), dmfxint();
        !            68: int    dmflint();
        !            69: struct uba_device *dmfinfo[NDMF];
        !            70: u_short        dmfstd[] = { 0 };
        !            71: struct uba_driver dmfdriver =
        !            72:        { dmfprobe, 0, dmfattach, 0, dmfstd, "dmf", dmfinfo };
        !            73: 
        !            74: struct tty dmf_tty[NDMF*8];
        !            75: struct dmx_softc dmf_softc[NDMF];
        !            76: #ifndef lint
        !            77: int    ndmf = NDMF*8;                  /* used by iostat */
        !            78: #endif
        !            79: 
        !            80: /*
        !            81:  * Routine for configuration to set dmf interrupt.
        !            82:  */
        !            83: /*ARGSUSED*/
        !            84: dmfprobe(reg, ctlr)
        !            85:        caddr_t reg;
        !            86:        struct uba_device *ctlr;
        !            87: {
        !            88:        register int br, cvec;          /* these are ``value-result'' */
        !            89:        register struct dmfdevice *dmfaddr = (struct dmfdevice *)reg;
        !            90:        register int i;
        !            91:        register unsigned int a;
        !            92:        static char *dmfdevs[]=
        !            93:                {"parallel","printer","synch","asynch"};
        !            94:        unsigned int dmfoptions;
        !            95:        static int (*intrv[3])() = { (int (*)())0, (int (*)())0, (int (*)())0 };
        !            96: 
        !            97: #ifdef lint
        !            98:        br = 0; cvec = br; br = cvec;
        !            99:        dmfxint(0); dmfrint(0);
        !           100:        dmfsrint(); dmfsxint(); dmfdaint(); dmfdbint(); dmflint(0);
        !           101: #endif
        !           102:        /*
        !           103:         * Pick the usual size DMF vector here (don't decrement it here).
        !           104:         * grab configuration; note that the DMF32
        !           105:         * doesn't seem to put the right bits in this
        !           106:         * register until AFTER the interrupt vector is set.
        !           107:         */
        !           108:        br = 0x15;
        !           109:        cvec = (uba_hd[numuba].uh_lastiv - 4*8);
        !           110:        dmfaddr->dmfccsr0 = (cvec >> 2);
        !           111:        dmfoptions = dmfaddr->dmfccsr0 & DMFC_CONFMASK;
        !           112: 
        !           113:        /* catch a couple of special cases:  Able vmz/32n and vmz/lp    */
        !           114:        if (dmfoptions == DMFC_ASYNC) {
        !           115:                /* Async portion only */
        !           116: 
        !           117:                cvec = (uba_hd[numuba].uh_lastiv -= 8);
        !           118:                dmfaddr->dmfccsr0 = (cvec - 2*8) >> 2;
        !           119:                intrv[0] = ctlr->ui_intr[4];
        !           120:                intrv[1] = ctlr->ui_intr[5];
        !           121:                ctlr->ui_intr = intrv;
        !           122:        } else if (dmfoptions == DMFC_LP) {
        !           123:                /* LP portion only */
        !           124: 
        !           125:                cvec = (uba_hd[numuba].uh_lastiv -= 8);
        !           126:                ctlr->ui_intr = &ctlr->ui_intr[6];
        !           127:        } else if (dmfoptions == (DMFC_LP|DMFC_ASYNC)) {
        !           128:                /* LP and Async portions only */
        !           129: 
        !           130:                cvec = (uba_hd[numuba].uh_lastiv -= 2*8);
        !           131:                ctlr->ui_intr = &ctlr->ui_intr[4];
        !           132:        } else {
        !           133:                /* All other configurations get everything */
        !           134: 
        !           135:                cvec = (uba_hd[numuba].uh_lastiv -= 4*8);
        !           136:        }
        !           137:        a = (dmfoptions >> 12) & 0xf;
        !           138:        printf("dmf%d:", ctlr->ui_unit);
        !           139:        for (i = 0; a != 0; ++i, a >>= 1) {
        !           140:                if (a & 1)
        !           141:                        printf(" %s",dmfdevs[i]);
        !           142:        }
        !           143:        printf(".\n");
        !           144: 
        !           145:        if (dmfoptions & DMFC_LP)
        !           146:                dmfaddr->dmfl_ctrl = DMFL_RESET;
        !           147:        return (sizeof (struct dmfdevice));
        !           148: }
        !           149: 
        !           150: /*
        !           151:  * Routine called to attach a dmf.
        !           152:  */
        !           153: dmfattach(ui)
        !           154:        register struct uba_device *ui;
        !           155: {
        !           156:        register struct dmx_softc *sc;
        !           157: 
        !           158:        sc = &dmf_softc[ui->ui_unit];
        !           159:        sc->dmx_type = 'f';
        !           160:        sc->dmx_unit = ui->ui_unit;
        !           161:        sc->dmx_unit0 = 0;
        !           162:        sc->dmx_ubanum = ui->ui_ubanum;
        !           163:        sc->dmx_softCAR = ui->ui_flags & 0xff;
        !           164:        sc->dmx_tty = &dmf_tty[ui->ui_unit * 8];
        !           165:        sc->dmx_octet =
        !           166:            (struct dmx_octet *)&((struct dmfdevice *)ui->ui_addr)->dmfa;
        !           167: 
        !           168:        cbase[ui->ui_ubanum] = -1;
        !           169:        dmf_uballoc[ui->ui_ubanum] = -1;
        !           170: #if NDMF_LP > 0
        !           171:        dmflattach(ui);
        !           172: #endif NDMF_LP
        !           173: }
        !           174: 
        !           175: /*
        !           176:  * Open a DMF32 line, mapping the clist onto the uba if this
        !           177:  * is the first dmf on this uba.  Turn on this dmf if this is
        !           178:  * the first use of it.
        !           179:  */
        !           180: /*ARGSUSED*/
        !           181: dmfopen(dev, flag)
        !           182:        dev_t dev;
        !           183: {
        !           184:        register struct tty *tp;
        !           185:        register struct dmx_softc *sc;
        !           186:        int unit, dmf;
        !           187:        register struct dmfdevice *addr;
        !           188:        register struct uba_device *ui;
        !           189:        int s;
        !           190:        int dmxparam();
        !           191: 
        !           192:        unit = minor(dev);
        !           193:        if (unit & 0200)
        !           194:                return (dmflopen(dev,flag));
        !           195:        dmf = unit >> 3;
        !           196:        if (unit >= NDMF*8 || (ui = dmfinfo[dmf])== 0 || ui->ui_alive == 0)
        !           197:                return (ENXIO);
        !           198: 
        !           199:        tp = &dmf_tty[unit];
        !           200:        sc = &dmf_softc[dmf];
        !           201:        addr = (struct dmfdevice *)ui->ui_addr;
        !           202:        tp->t_addr = (caddr_t)(&addr->dmfa);
        !           203:        tp->t_oproc = dmfstart;
        !           204:        tp->t_dev = dev;                        /* needed before dmxopen */
        !           205:        tp->t_param = dmxparam;
        !           206: 
        !           207:        /*
        !           208:         * While setting up state for this uba,
        !           209:         * block uba resets which can clear the state.
        !           210:         */
        !           211:        s = spl6();
        !           212:        if (cbase[ui->ui_ubanum] == -1) {
        !           213:                dmf_uballoc[ui->ui_ubanum] = dmf;
        !           214:                cbase[ui->ui_ubanum] = UBAI_ADDR(uballoc(ui->ui_ubanum,
        !           215:                    (caddr_t)cfree, nclist*sizeof(struct cblock), 0));
        !           216:        }
        !           217:        splx(s);
        !           218: 
        !           219:        return (dmxopen(tp, sc, flag));
        !           220: }
        !           221: 
        !           222: /*
        !           223:  * Close a DMF32 line.
        !           224:  */
        !           225: /*ARGSUSED*/
        !           226: dmfclose(dev, flag)
        !           227:        dev_t dev;
        !           228:        int flag;
        !           229: {
        !           230:        register unit;
        !           231: 
        !           232:        unit = minor(dev);
        !           233:        if (unit & 0200) {
        !           234:                dmflclose(dev, flag);
        !           235:                return;
        !           236:        }
        !           237:        return (dmxclose(&dmf_tty[unit]));
        !           238: }
        !           239: 
        !           240: dmfread(dev, uio, flag)
        !           241:        dev_t dev;
        !           242:        struct uio *uio;
        !           243: {
        !           244:        register struct tty *tp;
        !           245: 
        !           246:        if (minor(dev) & 0200)
        !           247:                return(ENXIO);
        !           248:        tp = &dmf_tty[minor(dev)];
        !           249:        return ((*linesw[tp->t_line].l_read)(tp, uio, flag));
        !           250: }
        !           251: 
        !           252: dmfwrite(dev, uio)
        !           253:        dev_t dev;
        !           254:        struct uio *uio;
        !           255: {
        !           256:        register struct tty *tp;
        !           257: 
        !           258:        if (minor(dev) & 0200)
        !           259:                return (dmflwrite(dev,uio));
        !           260:        tp = &dmf_tty[minor(dev)];
        !           261:        return ((*linesw[tp->t_line].l_write)(tp, uio));
        !           262: }
        !           263: 
        !           264: /*
        !           265:  * DMF32 receiver interrupt.
        !           266:  */
        !           267: dmfrint(dmf)
        !           268:        int dmf;
        !           269: {
        !           270:        struct uba_device *ui;
        !           271: 
        !           272:        ui = dmfinfo[dmf];
        !           273:        if (ui == 0 || ui->ui_alive == 0)
        !           274:                return;
        !           275:        dmxrint(&dmf_softc[dmf]);
        !           276: }
        !           277: 
        !           278: /*
        !           279:  * Ioctl for DMF32.
        !           280:  */
        !           281: dmfioctl(dev, cmd, data, flag)
        !           282:        dev_t dev;
        !           283:        caddr_t data;
        !           284: {
        !           285:        int unit = minor(dev);
        !           286:  
        !           287:        if (unit & 0200)
        !           288:                return (ENOTTY);
        !           289:        return (dmxioctl(&dmf_tty[unit], cmd, data, flag));
        !           290: }
        !           291: 
        !           292: /*
        !           293:  * DMF32 transmitter interrupt.
        !           294:  * Restart the idle line.
        !           295:  */
        !           296: dmfxint(dmf)
        !           297:        int dmf;
        !           298: {
        !           299: 
        !           300:        dmxxint(&dmf_softc[dmf]);
        !           301: }
        !           302: 
        !           303: /*
        !           304:  * Start (restart) transmission on the given line.
        !           305:  */
        !           306: dmfstart(tp)
        !           307:        struct tty *tp;
        !           308: {
        !           309: 
        !           310:        dmxstart(tp, &dmf_softc[minor(tp->t_dev) >> 3]);
        !           311: }
        !           312: 
        !           313: /*
        !           314:  * Stop output on a line, e.g. for ^S/^Q or output flush.
        !           315:  */
        !           316: dmfstop(tp, flag)
        !           317:        struct tty *tp;
        !           318: {
        !           319: 
        !           320:        dmxstop(tp, &dmf_softc[minor(tp->t_dev) >> 3], flag);
        !           321: }
        !           322: 
        !           323: /*
        !           324:  * Reset state of driver if UBA reset was necessary.
        !           325:  * Reset the csr, lpr, and lcr registers on open lines, and
        !           326:  * restart transmitters.
        !           327:  */
        !           328: dmfreset(uban)
        !           329:        int uban;
        !           330: {
        !           331:        register int dmf;
        !           332:        register struct tty *tp;
        !           333:        register struct uba_device *ui;
        !           334:        register struct dmfdevice *addr;
        !           335:        int i;
        !           336: 
        !           337:        for (dmf = 0; dmf < NDMF; dmf++) {
        !           338:                ui = dmfinfo[dmf];
        !           339:                if (ui == 0 || ui->ui_alive == 0 || ui->ui_ubanum != uban)
        !           340:                        continue;
        !           341:                printf(" dmf%d", dmf);
        !           342:                if (dmf_uballoc[uban] == dmf) {
        !           343:                        int info;
        !           344: 
        !           345:                        info = uballoc(uban, (caddr_t)cfree,
        !           346:                            nclist * sizeof(struct cblock), UBA_CANTWAIT);
        !           347:                        if (info)
        !           348:                                cbase[uban] = UBAI_ADDR(info);
        !           349:                        else {
        !           350:                                printf(" [can't get uba map]");
        !           351:                                cbase[uban] = -1;
        !           352:                        }
        !           353:                }
        !           354:                addr = (struct dmfdevice *)ui->ui_addr;
        !           355:                addr->dmfa.csr = DMF_IE;
        !           356:                addr->dmfa.rsp = dmx_timeout;
        !           357:                tp = &dmf_tty[dmf * 8];
        !           358:                for (i = 0; i < 8; i++, tp++) {
        !           359:                        if (tp->t_state & (TS_ISOPEN|TS_WOPEN)) {
        !           360:                                dmxparam(tp, &tp->t_termios);
        !           361:                                (void) dmxmctl(tp, DMF_ON, DMSET);
        !           362:                                tp->t_state &= ~TS_BUSY;
        !           363:                                dmfstart(tp);
        !           364:                        }
        !           365:                }
        !           366: #if NDMF_LP > 0
        !           367:                dmflint(dmf);
        !           368: #endif
        !           369:        }
        !           370: }
        !           371: 
        !           372: #if NDMF_LP > 0
        !           373: /*
        !           374:  * DMF32 line printer driver
        !           375:  *
        !           376:  * the line printer on dmfx is indicated by a minor device code of 128+x
        !           377:  *
        !           378:  * the flags field of the config file is interpreted like so:
        !           379:  * bits                meaning
        !           380:  * ----                -------
        !           381:  * 0-7         soft carrier bits for ttys part of dmf32
        !           382:  * 8-15                number of cols/line on the line printer
        !           383:  *                     if 0, 132 will be used.
        !           384:  * 16-23       number of lines/page on the line printer
        !           385:  *                     if 0, 66 will be used.
        !           386:  * 24          if 1 DO NOT use the auto format mode of the
        !           387:  *                     line printer parallel port
        !           388:  */
        !           389: 
        !           390: struct dmfl_softc {
        !           391:        u_int   dmfl_state;             /* soft state bits */
        !           392:        int     dmfl_info;              /* uba info */
        !           393:        u_short dmfl_lines;             /* lines per page (66 def.) */
        !           394:        u_short dmfl_cols;              /* cols per line (132 def.) */
        !           395:        u_short dmfl_format;            /* fflag for auto form feed */
        !           396:        char    dmfl_buf[DMFL_BUFSIZ];
        !           397: } dmfl_softc[NDMF];
        !           398: 
        !           399: /*
        !           400:  * convert device number into DMF line printer unit number
        !           401:  */
        !           402: #define        DMFL_UNIT(d)    (minor(d) & 0xf)        /* up to 16 DMFs */
        !           403: 
        !           404: #define ASLP 1         /* waiting for interrupt from dmf */
        !           405: #define OPEN 2         /* line printer is open */
        !           406: #define ERROR 4                /* error while printing, driver
        !           407:                         refuses to do anything till closed */
        !           408: #define MOREIO 8       /* more data for printer */
        !           409: 
        !           410: /*
        !           411:  * Attach printer portion of dmf.
        !           412:  */
        !           413: dmflattach(ui)
        !           414:        register struct uba_device *ui;
        !           415: {
        !           416:        register int unit = ui->ui_unit;
        !           417:        register int cols = (ui->ui_flags>>8) & 0xff;
        !           418:        register int lines = (ui->ui_flags>>16) & 0xff;
        !           419:        register struct dmfl_softc *sc;
        !           420: 
        !           421:        sc = &dmfl_softc[unit];
        !           422:        sc->dmfl_cols = cols == 0 ? DMFL_DEFCOLS : cols;
        !           423:        sc->dmfl_lines = lines == 0 ? DMFL_DEFLINES : lines;
        !           424:        if ((ui->ui_flags >> 24) & 0x1)
        !           425:                sc->dmfl_format = (2 << 8);
        !           426:        else
        !           427:                sc->dmfl_format = (2 << 8) | DMFL_FORMAT;
        !           428: }
        !           429: 
        !           430: /*
        !           431:  * dmflopen -- open the line printer port on a dmf32
        !           432:  */
        !           433: /* ARGSUSED */
        !           434: dmflopen(dev, flag)
        !           435:        dev_t dev;
        !           436:        int flag;
        !           437: {
        !           438:        register int dmf;
        !           439:        register struct dmfl_softc *sc;
        !           440:        register struct uba_device *ui;
        !           441:        register struct dmfdevice *addr;
        !           442: 
        !           443:        dmf = DMFL_UNIT(dev);
        !           444:        if (dmf >= NDMF || (ui = dmfinfo[dmf]) == 0 || ui->ui_alive == 0)
        !           445:                return (ENXIO);
        !           446:        sc = &dmfl_softc[dmf];
        !           447:        if (sc->dmfl_state & OPEN)
        !           448:                return (EBUSY);
        !           449:        addr = (struct dmfdevice *)ui->ui_addr;
        !           450:        if (addr->dmfl_ctrl & DMFL_OFFLINE) {
        !           451: #ifdef notdef
        !           452:                log(LOG_WARNING, "dmf%d: line printer offline/jammed\n",
        !           453:                        dmf);
        !           454: #endif
        !           455:                return (EIO);
        !           456:        }
        !           457:        if ((addr->dmfl_ctrl & DMFL_CONV)) {
        !           458:                log(LOG_WARNING, "dmf%d: line printer disconnected\n", dmf);
        !           459:                return (EIO);
        !           460:        }
        !           461: 
        !           462:        addr->dmfl_ctrl = 0;
        !           463:        sc->dmfl_state |= OPEN;
        !           464:        return (0);
        !           465: }
        !           466: 
        !           467: /* ARGSUSED */
        !           468: dmflclose(dev, flag)
        !           469:        dev_t dev;
        !           470:        int flag;
        !           471: {
        !           472:        register int dmf = DMFL_UNIT(dev);
        !           473:        register struct dmfl_softc *sc = &dmfl_softc[dmf];
        !           474:        register struct uba_device *ui = dmfinfo[dmf];
        !           475: 
        !           476:        sc->dmfl_state = 0;
        !           477:        if (sc->dmfl_info != 0)
        !           478:                ubarelse((int)ui->ui_ubanum, &sc->dmfl_info);
        !           479: 
        !           480:        ((struct dmfdevice *)ui->ui_addr)->dmfl_ctrl = 0;
        !           481: }
        !           482: 
        !           483: dmflwrite(dev, uio)
        !           484:        dev_t dev;
        !           485:        struct uio *uio;
        !           486: {
        !           487:        register int n;
        !           488:        register int error;
        !           489:        register struct dmfl_softc *sc;
        !           490: 
        !           491:        sc = &dmfl_softc[DMFL_UNIT(dev)];
        !           492:        if (sc->dmfl_state & ERROR)
        !           493:                return (EIO);
        !           494:        while (n = (unsigned)uio->uio_resid) {
        !           495:                if (n > DMFL_BUFSIZ) {
        !           496:                        n = DMFL_BUFSIZ;
        !           497:                        sc->dmfl_state |= MOREIO;
        !           498:                } else
        !           499:                        sc->dmfl_state &= ~MOREIO;
        !           500:                if (error = uiomove(sc->dmfl_buf, (int)n, uio))
        !           501:                        return (error);
        !           502:                if (error = dmflout(dev, sc->dmfl_buf, n))
        !           503:                        return (error);
        !           504:        }
        !           505:        return (0);
        !           506: }
        !           507: 
        !           508: 
        !           509: /*
        !           510:  * dmflout -- start io operation to dmf line printer
        !           511:  *             cp is addr of buf of n chars to be sent.
        !           512:  *
        !           513:  *     -- dmf will be put in formatted output mode, this will
        !           514:  *             be selectable from an ioctl if the
        !           515:  *             need ever arises.
        !           516:  */
        !           517: dmflout(dev, cp, n)
        !           518:        dev_t dev;
        !           519:        char *cp;
        !           520:        int n;
        !           521: {
        !           522:        register struct dmfl_softc *sc;
        !           523:        register int dmf;
        !           524:        register struct uba_device *ui;
        !           525:        register struct dmfdevice *d;
        !           526:        int s, error;
        !           527: 
        !           528:        dmf = DMFL_UNIT(dev);
        !           529:        sc = &dmfl_softc[dmf];
        !           530:        if (sc->dmfl_state & ERROR)
        !           531:                return (EIO);
        !           532:        ui = dmfinfo[dmf];
        !           533:        /*
        !           534:         * allocate unibus resources, will be released when io
        !           535:         * operation is done.
        !           536:         */
        !           537:        if (sc->dmfl_info == 0)
        !           538:                sc->dmfl_info = uballoc(ui->ui_ubanum, cp, n, 0);
        !           539:        d = (struct dmfdevice *)ui->ui_addr;
        !           540:        d->dmfl_ctrl = sc->dmfl_format;         /* indir reg 2 */
        !           541:        /* indir reg auto increments on r/w */
        !           542:        /* SO DON'T CHANGE THE ORDER OF THIS CODE */
        !           543:        d->dmfl_indrct = 0;                     /* prefix chars & num */
        !           544:        d->dmfl_indrct = 0;                     /* suffix chars & num */
        !           545:        d->dmfl_indrct = sc->dmfl_info;         /* dma lo 16 bits addr */
        !           546:        d->dmfl_indrct = -n;                    /* number of chars */
        !           547: 
        !           548:        d->dmfl_indrct = ((sc->dmfl_info>>16)&3) | DMFL_OPTIONS;
        !           549:                                                /* dma hi 2 bits addr */
        !           550:        d->dmfl_indrct = sc->dmfl_lines         /* lines per page */
        !           551:                | (sc->dmfl_cols<<8);           /* carriage width */
        !           552:        sc->dmfl_state |= ASLP;
        !           553:        error = 0;
        !           554:        s = spltty();
        !           555:        d->dmfl_ctrl |= DMFL_PEN | DMFL_IE;
        !           556:        while (sc->dmfl_state & ASLP) {
        !           557:                if (error = tsleep(sc->dmfl_buf, (PZERO + 8) | PCATCH,
        !           558:                    ttyout, 0))
        !           559:                        break;
        !           560:                while (sc->dmfl_state & ERROR) {
        !           561:                        timeout(dmflint, (caddr_t)dmf, 10 * hz);
        !           562:                        if (error = tsleep((caddr_t)&sc->dmfl_state,
        !           563:                            (PZERO + 8) | PCATCH, ttyout, 0))
        !           564:                                goto out;
        !           565:                }
        !           566:        }
        !           567: out:
        !           568:        splx(s);
        !           569:        return (0);
        !           570: }
        !           571: 
        !           572: /*
        !           573:  * dmflint -- handle an interrupt from the line printer part of the dmf32
        !           574:  */
        !           575: dmflint(dmf)
        !           576:        int dmf;
        !           577: {
        !           578:        register struct uba_device *ui;
        !           579:        register struct dmfl_softc *sc;
        !           580:        register struct dmfdevice *d;
        !           581:        short dmfl_stats;
        !           582: 
        !           583:        ui = dmfinfo[dmf];
        !           584:        sc = &dmfl_softc[dmf];
        !           585:        d = (struct dmfdevice *)ui->ui_addr;
        !           586: 
        !           587:        d->dmfl_ctrl &= ~DMFL_IE;
        !           588:        dmfl_stats = d->dmfl_ctrl;
        !           589:        if (sc->dmfl_state & ERROR) {
        !           590:                if ((dmfl_stats & DMFL_OFFLINE) == 0)
        !           591:                        sc->dmfl_state &= ~ERROR;
        !           592:                wakeup((caddr_t)&sc->dmfl_state);
        !           593:                return;
        !           594:        }
        !           595:        if (dmfl_stats & DMFL_DMAERR)
        !           596:                log(LOG_WARNING, "dmf%d: NXM\n", dmf);
        !           597:        if (dmfl_stats & DMFL_OFFLINE) {
        !           598:                log(LOG_WARNING, "dmf%d: printer error\n", dmf);
        !           599:                sc->dmfl_state |= ERROR;
        !           600:        }
        !           601: #ifdef notdef
        !           602:        if (dmfl_stats & DMFL_PDONE) {
        !           603:                printf("bytes= %d\n", d->dmfl_indrct);
        !           604:                printf("lines= %d\n", d->dmfl_indrct);
        !           605:        }
        !           606: #endif
        !           607:        sc->dmfl_state &= ~ASLP;
        !           608:        wakeup((caddr_t)sc->dmfl_buf);
        !           609:        if (sc->dmfl_info && (sc->dmfl_state & MOREIO) == 0)
        !           610:                ubarelse(ui->ui_ubanum, &sc->dmfl_info);
        !           611: }
        !           612: #endif NDMF_LP
        !           613: 
        !           614: /* stubs for interrupt routines for devices not yet supported */
        !           615: 
        !           616: dmfsrint()
        !           617: {
        !           618:        printf("dmfsrint\n");
        !           619: }
        !           620: 
        !           621: dmfsxint()
        !           622: {
        !           623:        printf("dmfsxint\n");
        !           624: }
        !           625: 
        !           626: dmfdaint()
        !           627: {
        !           628:        printf("dmfdaint\n");
        !           629: }
        !           630: 
        !           631: dmfdbint()
        !           632: {
        !           633:        printf("dmfdbint\n");
        !           634: }
        !           635: #endif NDMF

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