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Annotation of 41BSD/4.0.upgrade/sys/stand/up.c, revision 1.1

1.1     ! root        1: /*     up.c    4.9     81/04/18        */
        !             2: 
        !             3: #include "../h/param.h"
        !             4: #include "../h/inode.h"
        !             5: #include "../h/upreg.h"
        !             6: #include "../h/pte.h"
        !             7: #include "../h/ubareg.h"
        !             8: #include "saio.h"
        !             9: #include "savax.h"
        !            10: 
        !            11: u_short        ubastd[] = { 0776700 };
        !            12: char   up_gottype[MAXNUBA*8] = { 0 };
        !            13: char   up_type[MAXNUBA*8] = { 0 };
        !            14: short  up_off[] = { 0, 27, 68, -1, -1, -1, -1, 82 };
        !            15: short  fj_off[] = { 0, 50, 0, -1, -1, -1, -1, 155 };
        !            16: struct upst {
        !            17:        short nsect;
        !            18:        short ntrak;
        !            19:        short nspc;
        !            20:        short ncyl;
        !            21:        short *off;
        !            22: } upst[] = {
        !            23:        32,     19,     32*19,  823,    up_off,
        !            24:        32,     10,     32*10,  823,    fj_off,
        !            25: };
        !            26: 
        !            27: upopen(io)
        !            28:        register struct iob *io;
        !            29: {
        !            30:        register struct updevice *upaddr =
        !            31:            (struct updevice *)ubamem(io->i_unit, ubastd[0]);
        !            32:        register struct upst *st;
        !            33: 
        !            34:        while ((upaddr->upcs1 & UP_DVA) == 0)
        !            35:                ;
        !            36:        if (up_gottype[io->i_unit] == 0) {
        !            37:                upaddr->uphr = UPHR_MAXTRAK;
        !            38:                if (upaddr->uphr == 9)
        !            39:                        up_type[io->i_unit] = 1;        /* fuji kludge */
        !            40:                upaddr->upcs2 = UPCS2_CLR;
        !            41:                up_gottype[io->i_unit] = 1;
        !            42:        }
        !            43:        st = &upst[up_type[io->i_unit]];
        !            44:        if (io->i_boff < 0 || io->i_boff > 7 || st->off[io->i_boff] == -1)
        !            45:                _stop("up bad unit");
        !            46:        io->i_boff = st->off[io->i_boff] * st->nspc;
        !            47: }
        !            48: 
        !            49: upstrategy(io, func)
        !            50:        register struct iob *io;
        !            51: {
        !            52:        int unit, nspc, ns, cn, tn, sn;
        !            53:        daddr_t bn;
        !            54:        int info;
        !            55:        register short *rp;
        !            56:        register struct updevice *upaddr =
        !            57:            (struct updevice *)ubamem(io->i_unit, ubastd[0]);
        !            58:        register struct upst *st = &upst[up_type[io->i_unit]];
        !            59: 
        !            60:        unit = io->i_unit;
        !            61:        bn = io->i_bn;
        !            62:        cn = bn/st->nspc;
        !            63:        sn = bn%st->nspc;
        !            64:        tn = sn/st->nsect;
        !            65:        sn = sn%st->nsect;
        !            66:        upaddr->upcs2 = unit;
        !            67:        if ((upaddr->upds & UPDS_VV) == 0) {
        !            68:                upaddr->upcs1 = UP_DCLR|UP_GO;
        !            69:                upaddr->upcs1 = UP_PRESET|UP_GO;
        !            70:                upaddr->upof = UPOF_FMT22;
        !            71:        }
        !            72:        if ((upaddr->upds & UPDS_DREADY) != UPDS_DREADY)
        !            73:                _stop("up not ready");
        !            74:        info = ubasetup(io, 1);
        !            75:        rp = (short *) &upaddr->upda;
        !            76:        upaddr->updc = cn;
        !            77:        *rp = (tn << 8) + sn;
        !            78:        *--rp = info;
        !            79:        *--rp = -io->i_cc / sizeof (short);
        !            80:        if (func == READ)
        !            81:                *--rp = UP_RCOM|UP_GO;
        !            82:        else
        !            83:                *--rp = UP_WCOM|UP_GO;
        !            84:        do {
        !            85:                DELAY(25);
        !            86:        } while ((upaddr->upcs1 & UP_RDY) == 0);
        !            87:        if (upaddr->upds & UPDS_ERR) {
        !            88:                printf("up error: (cyl,trk,sec)=(%d,%d,%d) cs2=%b er1=%b er2=%b\n",
        !            89:                    cn, tn, sn,
        !            90:                    upaddr->upcs2, UPCS2_BITS, upaddr->uper1, UPER1_BITS,
        !            91:                    upaddr->uper2, UPER2_BITS);
        !            92:                return (-1);
        !            93:        }
        !            94:        ubafree(io, info);
        !            95:        return (io->i_cc);
        !            96: }

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