Return to kdb.c CVS log

Up to [CSRG BSD Unix] / 43BSDTahoe / sys / vaxstand

Annotation of 43BSDTahoe/sys/vaxstand/kdb.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  *
        !            17:  *     @(#)kdb.c       7.4 (Berkeley) 7/8/88
        !            18:  */
        !            19: 
        !            20: /*
        !            21:  * KDB50/RAxx disk device driver
        !            22:  */
        !            23: #include "../machine/pte.h"
        !            24: 
        !            25: #include "param.h"
        !            26: #include "inode.h"
        !            27: #include "fs.h"
        !            28: #include "disklabel.h"
        !            29: 
        !            30: #include "saio.h"
        !            31: #include "savax.h"
        !            32: 
        !            33: /*
        !            34:  * N.B.: on KDB50, controller == adapter
        !            35:  * here we just use the controller number
        !            36:  */
        !            37: 
        !            38: #define        NKRA            8       /* max drive number */
        !            39: #define        SECTSIZ         512     /* sector size in bytes */
        !            40: 
        !            41: /*
        !            42:  * Parameters for the communications area:
        !            43:  * command and response rings both one entry.
        !            44:  */
        !            45: #define        NRSP    1
        !            46: #define        NCMD    1
        !            47: 
        !            48: #include "../vaxbi/bireg.h"
        !            49: #include "../vaxbi/kdbreg.h"
        !            50: #include "../vax/mscp.h"
        !            51: 
        !            52: struct kdb {
        !            53:        struct kdbca    kdb_ca;
        !            54:        struct mscp     kdb_rsp;
        !            55:        struct mscp     kdb_cmd;
        !            56: } kdb;
        !            57: 
        !            58: int    kdbinit[MAXNKDB];
        !            59: struct disklabel kralabel[MAXNKDB][NKRA];
        !            60: u_long kramedia[MAXNKDB][NKRA];
        !            61: char   lbuf[SECTSIZ];
        !            62: 
        !            63: kraopen(io)
        !            64:        register struct iob *io;
        !            65: {
        !            66:        register struct kdb_regs *kr;
        !            67:        register struct disklabel *lp;
        !            68:        register int ctlr, unit;
        !            69:        struct iob tio;
        !            70: 
        !            71:        if ((u_int)(ctlr = io->i_ctlr) >= nkdb)
        !            72:                return (EADAPT);
        !            73:        if ((u_int)(unit = io->i_unit) >= NKRA)
        !            74:                return (EUNIT);
        !            75:        kr = (struct kdb_regs *)kdbaddr[ctlr];
        !            76:        if (kdbinit[ctlr] == 0) {
        !            77:                kr->kdb_bi.bi_csr |= BICSR_NRST;
        !            78:                DELAY(10000);   /* ??? */
        !            79:                /* clear any bus errors */
        !            80:                kr->kdb_bi.bi_ber = ~(BIBER_MBZ|BIBER_NMR|BIBER_UPEN);
        !            81:                while ((kr->kdb_sa & KDB_STEP1) == 0)
        !            82:                        /* void */;
        !            83:                kr->kdb_bi.bi_bcicsr |= BCI_STOPEN | BCI_IDENTEN;
        !            84:                kr->kdb_sw = KDB_ERR;
        !            85:                while ((kr->kdb_sa & KDB_STEP2) == 0)
        !            86:                        /* void */;
        !            87:                kr->kdb_sw = (int)&kdb.kdb_ca.ca_rspdsc[0];
        !            88:                while ((kr->kdb_sa & KDB_STEP3) == 0)
        !            89:                        /* void */;
        !            90:                kr->kdb_sw = (int)&kdb.kdb_ca.ca_rspdsc[0] >> 16;
        !            91:                while ((kr->kdb_sa & KDB_STEP4) == 0)
        !            92:                        /* void */;
        !            93:                kr->kdb_sw = KDB_GO;
        !            94:                kdb.kdb_ca.ca_rspdsc[0] = (long)&kdb.kdb_rsp.mscp_cmdref;
        !            95:                kdb.kdb_ca.ca_cmddsc[0] = (long)&kdb.kdb_cmd.mscp_cmdref;
        !            96:                if (kdbcmd(M_OP_SETCTLRC, io)) {
        !            97:                        printf("kra: open error, SETCTLRC\n");
        !            98:                        return (ENXIO);
        !            99:                }
        !           100:                kdbinit[ctlr] = 1;
        !           101:        }
        !           102:        lp = &kralabel[ctlr][unit];
        !           103:        if (kramedia[ctlr][unit] == 0) {
        !           104:                kdb.kdb_cmd.mscp_unit = unit;
        !           105:                if (kdbcmd(M_OP_ONLINE, io)) {
        !           106:                        printf("kra: open error, ONLINE\n");
        !           107:                        return (ENXIO);
        !           108:                }
        !           109:                kramedia[ctlr][unit] = kdb.kdb_rsp.mscp_onle.onle_mediaid;
        !           110:                tio = *io;
        !           111:                tio.i_bn = LABELSECTOR;
        !           112:                tio.i_ma = lbuf;
        !           113:                tio.i_cc = SECTSIZ;
        !           114:                tio.i_flgs |= F_RDDATA;
        !           115:                if (krastrategy(&tio, READ) != SECTSIZ)
        !           116:                        return (ERDLAB);
        !           117:                *lp = *(struct disklabel *)(lbuf + LABELOFFSET);
        !           118:                if (lp->d_magic != DISKMAGIC || lp->d_magic2 != DISKMAGIC) {
        !           119: #ifdef COMPAT_42
        !           120:                        printf("kra%d: unlabeled\n", unit);
        !           121:                        kramaptype(io, lp);
        !           122: #else
        !           123:                        return (EUNLAB);
        !           124: #endif
        !           125:                }
        !           126:        }
        !           127:        if ((u_int)io->i_part >= lp->d_npartitions ||
        !           128:            (io->i_boff = lp->d_partitions[io->i_part].p_offset) == -1)
        !           129:                return (EPART);
        !           130:        return (0);
        !           131: }
        !           132: 
        !           133: kdbcmd(op, io)
        !           134:        int op;
        !           135:        struct iob *io;
        !           136: {
        !           137:        register struct kdb *k = &kdb;
        !           138:        register struct mscp *mp;
        !           139:        register int i;
        !           140: 
        !           141:        k->kdb_cmd.mscp_opcode = op;
        !           142:        k->kdb_rsp.mscp_msglen = MSCP_MSGLEN;
        !           143:        k->kdb_cmd.mscp_msglen = MSCP_MSGLEN;
        !           144:        k->kdb_ca.ca_rspdsc[0] |= MSCP_OWN | MSCP_INT;
        !           145:        k->kdb_ca.ca_cmddsc[0] |= MSCP_OWN | MSCP_INT;
        !           146:        i = ((struct kdb_regs *)kdbaddr[io->i_ctlr])->kdb_ip;
        !           147: #ifdef lint
        !           148:        i = i;
        !           149: #endif
        !           150:        mp = &k->kdb_rsp;
        !           151:        for (;;) {
        !           152:                if (k->kdb_ca.ca_cmdint)
        !           153:                        k->kdb_ca.ca_cmdint = 0;
        !           154:                if (k->kdb_ca.ca_rspint == 0)
        !           155:                        continue;
        !           156:                k->kdb_ca.ca_rspint = 0;
        !           157:                if (mp->mscp_opcode == (op | M_OP_END))
        !           158:                        break;
        !           159:                printf("unexpected rsp type %x op %x ignored\n",
        !           160:                        MSCP_MSGTYPE(mp->mscp_msgtc), mp->mscp_opcode);
        !           161:                k->kdb_ca.ca_rspdsc[0] |= MSCP_OWN | MSCP_INT;
        !           162:        }
        !           163:        if ((mp->mscp_status & M_ST_MASK) != M_ST_SUCCESS)
        !           164:                return (-1);
        !           165:        return (0);
        !           166: }
        !           167: 
        !           168: krastrategy(io, func)
        !           169:        register struct iob *io;
        !           170:        int func;
        !           171: {
        !           172:        register struct mscp *mp;
        !           173: 
        !           174:        mp = &kdb.kdb_cmd;
        !           175:        mp->mscp_unit = io->i_unit;
        !           176:        mp->mscp_seq.seq_lbn = io->i_bn;
        !           177:        mp->mscp_seq.seq_bytecount = io->i_cc;
        !           178:        mp->mscp_seq.seq_buffer = (long)io->i_ma | KDB_PHYS;
        !           179:        if (kdbcmd(func == READ ? M_OP_READ : M_OP_WRITE, io)) {
        !           180:                printf("kra: I/O error\n");
        !           181:                return (-1);
        !           182:        }
        !           183:        return (io->i_cc);
        !           184: }
        !           185: 
        !           186: #ifdef COMPAT_42
        !           187: u_long kra60_off[] = { 0, 15884, 0, 49324, 131404, 49324, 242606, 49324 };
        !           188: #define kra70_off kra60_off
        !           189: u_long kra80_off[] = { 0, 15884, 0, -1, 49324, 49324, 49910, 131404 };
        !           190: u_long kra81_off[] = { 0, 15884, 0, 131404, 49324, 498790, 563050, 131404 };
        !           191: u_long kra82_off[] = { 0, 15884, 0, 375345, 391590, 699390, 375345, 83790 }; 
        !           192: 
        !           193: struct mediamap {
        !           194:        u_long  id;             /* media ID */
        !           195:        u_long  *off;           /* offsets */
        !           196: } kra_map[] = {
        !           197:        { MSCP_MKDRIVE2('R', 'A', 60),          kra60_off },
        !           198:        { MSCP_MKDRIVE2('R', 'A', 70),          kra70_off },
        !           199:        { MSCP_MKDRIVE2('R', 'A', 80),          kra80_off },
        !           200:        { MSCP_MKDRIVE2('R', 'A', 81),          kra81_off },
        !           201:        { MSCP_MKDRIVE2('R', 'A', 82),          kra82_off },
        !           202:        0
        !           203: };
        !           204: 
        !           205: kramaptype(io, lp)
        !           206:        register struct iob *io;
        !           207:        register struct disklabel *lp;
        !           208: {
        !           209:        register struct partition *pp;
        !           210:        register u_long i;
        !           211:        register struct mediamap *map;
        !           212: 
        !           213:        i = MSCP_MEDIA_DRIVE(kramedia[io->i_ctlr][io->i_unit]);
        !           214:        for (map = kra_map; map->id != 0; map++) {
        !           215:                if (map->id == i) {
        !           216:                        lp->d_npartitions = 8;
        !           217:                        for (pp = lp->d_partitions, i = 0; i < 8; pp++, i++)
        !           218:                                pp->p_offset = map->off[i];
        !           219:                        return;
        !           220:                }
        !           221:        }
        !           222:        printf("kra%d: media type 0x%x unsupported\n", io->i_unit, i);
        !           223:        lp->d_npartitions = 0;
        !           224: }
        !           225: #endif

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.