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Annotation of researchv8dc/sys/boot/stand/hp.c, revision 1.1

1.1     ! root        1: /*     hp.c    4.6     81/05/10        */
        !             2: 
        !             3: /*
        !             4:  * RP??/RM?? disk driver
        !             5:  */
        !             6: 
        !             7: #include <sys/param.h>
        !             8: #include <sys/inode.h>
        !             9: #include <sys/hpreg.h>
        !            10: #include <sys/pte.h>
        !            11: #include <sys/mbareg.h>
        !            12: #include "saio.h"
        !            13: #include "savax.h"
        !            14: 
        !            15: #define        MASKREG(reg)    ((reg)&0xffff)
        !            16: 
        !            17: char   hp_type[MAXNMBA*8] = { 0 };
        !            18: 
        !            19: /* THIS SHOULD BE READ IN OFF THE PACK, PER DRIVE */
        !            20: short  hp6_off[8] =    { 0, 38, 0, -1, -1, -1, 118, -1 };
        !            21: short  rm3_off[8] =    { 0, 100, 0, -1, -1, -1, 310, -1 };
        !            22: short  rm5_off[8] =    { 0, 27, 0, 562, 589, 681, 562, 82 };
        !            23: short  rm80_off[8] =   { 0, 37, 0, -1, -1, -1, 115, 305 };
        !            24: short  hp7_off[8] =    { 0, 10, 0, 330, 340, 500, 330, 50 };
        !            25: short  mfj_off[8] =    { 0, 32, 96, 0, 0, 0, 0, 0};
        !            26: /* END SHOULD BE READ IN */
        !            27: 
        !            28: short  hptypes[] =
        !            29:     { MBDT_RM03, MBDT_RM05, MBDT_RP06, MBDT_RM80, MBDT_RP05, MBDT_RP07,
        !            30:       MBDT_FUJI, 0 };
        !            31: 
        !            32: struct hpst {
        !            33:        short   nsect;
        !            34:        short   ntrak;
        !            35:        short   nspc;
        !            36:        short   ncyl;
        !            37:        short   *off;
        !            38: } hpst[] = {
        !            39:        32,     5,      32*5,   823,    rm3_off,        /* RM03 */
        !            40:        32,     19,     32*19,  823,    rm5_off,        /* RM05 */
        !            41:        22,     19,     22*19,  815,    hp6_off,        /* RP06 */
        !            42:        31,     14,     31*14,  559,    rm80_off,       /* RM80 */
        !            43:        22,     19,     22*19,  411,    hp6_off,        /* RP06 */
        !            44:        50,     32,     50*32,  630,    hp7_off,        /* RP07 */
        !            45:        32,     10,     32*10,  823,    mfj_off,        /* little fujitsu */
        !            46: };
        !            47: 
        !            48: hpopen(io)
        !            49:        register struct iob *io;
        !            50: {
        !            51:        register unit = io->i_unit;
        !            52:        struct hpdevice *hpaddr = (struct hpdevice *)mbadrv(unit);
        !            53:        register struct hpst *st;
        !            54: 
        !            55:        mbainit(UNITTOMBA(io->i_unit));
        !            56:        if (hp_type[unit] == 0) {
        !            57:                register type = hpaddr->hpdt & MBDT_TYPE;
        !            58:                register int i;
        !            59: 
        !            60:                for (i = 0; hptypes[i]; i++)
        !            61:                        if (hptypes[i] == type)
        !            62:                                goto found;
        !            63:                _stop("unknown drive type");
        !            64: found:
        !            65:                hp_type[unit] = i;
        !            66:        }
        !            67:        st = &hpst[hp_type[unit]];
        !            68:        if (io->i_boff < 0 || io->i_boff > 7 ||
        !            69:            st->off[io->i_boff]== -1)
        !            70:                _stop("hp bad minor");
        !            71:        io->i_boff = st->off[io->i_boff] * st->nspc;
        !            72: }
        !            73: 
        !            74: hpstrategy(io, func)
        !            75:        register struct iob *io;
        !            76: {
        !            77:        int unit = io->i_unit;
        !            78:        daddr_t bn = io->i_bn;
        !            79:        struct hpdevice *hpaddr = (struct hpdevice *)mbadrv(unit);
        !            80:        struct hpst *st = &hpst[hp_type[unit]];
        !            81:        int cn, tn, sn;
        !            82: 
        !            83:        if ((hpaddr->hpds & HPDS_VV) == 0) {
        !            84:                hpaddr->hpcs1 = HP_DCLR|HP_GO;
        !            85:                hpaddr->hpcs1 = HP_PRESET|HP_GO;
        !            86:                hpaddr->hpof = HPOF_FMT22;
        !            87:        }
        !            88:        cn = bn/st->nspc;
        !            89:        sn = bn%st->nspc;
        !            90:        tn = sn/st->nsect;
        !            91:        sn = sn%st->nsect;
        !            92:        hpaddr->hpdc = cn;
        !            93:        hpaddr->hpda = (tn << 8) + sn;
        !            94:        mbastart(io, func);
        !            95:        while ((hpaddr->hpds & HPDS_DRY) == 0)
        !            96:                ;
        !            97:        if (hpaddr->hpds&HPDS_ERR) {
        !            98:                printf("hp error: (cyl,trk,sec)=(%d,%d,%d) ds=%b er1=%b\n",
        !            99:                    cn, tn, sn, MASKREG(hpaddr->hpds), HPDS_BITS,
        !           100:                    MASKREG(hpaddr->hper1), HPER1_BITS);
        !           101:                return (-1);
        !           102:        }
        !           103:        return (io->i_cc);
        !           104: }

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