4.3BSD-Reno/src/sys/vaxstand/kdb.c
/*
* Copyright (c) 1988 Regents of the University of California.
* All rights reserved.
*
* Redistribution is only permitted until one year after the first shipment
* of 4.4BSD by the Regents. Otherwise, redistribution and use in source and
* binary forms are permitted provided that: (1) source distributions retain
* this entire copyright notice and comment, and (2) distributions including
* binaries display the following acknowledgement: This product includes
* software developed by the University of California, Berkeley and its
* contributors'' in the documentation or other materials provided with the
* distribution and in all advertising materials mentioning features or use
* of this software. Neither the name of the University nor the names of
* its contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* @(#)kdb.c 7.7 (Berkeley) 6/28/90
*/
/*
* KDB50/RAxx disk device driver
*/
#include "machine/pte.h"
#include "param.h"
#include "disklabel.h"
#include "saio.h"
#include "savax.h"
/*
* N.B.: on KDB50, controller == adapter
* here we just use the controller number
*/
#define NKRA 8 /* max drive number */
#define SECTSIZ 512 /* sector size in bytes */
/*
* Parameters for the communications area:
* command and response rings both one entry.
*/
#define NRSP 1
#define NCMD 1
#include "../vaxbi/bireg.h"
#include "../vaxbi/kdbreg.h"
#include "../vax/mscp.h"
struct kdb {
struct kdbca kdb_ca;
struct mscp kdb_rsp;
struct mscp kdb_cmd;
} kdb;
int kdbinit[MAXNKDB];
struct disklabel kralabel[MAXNKDB][NKRA];
u_long kramedia[MAXNKDB][NKRA];
char lbuf[SECTSIZ];
kraopen(io)
register struct iob *io;
{
register struct kdb_regs *kr;
register struct disklabel *lp;
register int ctlr, unit;
struct iob tio;
if ((u_int)(ctlr = io->i_ctlr) >= nkdb)
return (EADAPT);
if ((u_int)(unit = io->i_unit) >= NKRA)
return (EUNIT);
kr = (struct kdb_regs *)kdbaddr[ctlr];
if (kdbinit[ctlr] == 0) {
kr->kdb_bi.bi_csr |= BICSR_NRST;
DELAY(10000); /* ??? */
/* clear any bus errors */
kr->kdb_bi.bi_ber = ~(BIBER_MBZ|BIBER_NMR|BIBER_UPEN);
while ((kr->kdb_sa & KDB_STEP1) == 0)
/* void */;
kr->kdb_bi.bi_bcicsr |= BCI_STOPEN | BCI_IDENTEN;
kr->kdb_sw = KDB_ERR;
while ((kr->kdb_sa & KDB_STEP2) == 0)
/* void */;
kr->kdb_sw = (int)&kdb.kdb_ca.ca_rspdsc[0];
while ((kr->kdb_sa & KDB_STEP3) == 0)
/* void */;
kr->kdb_sw = (int)&kdb.kdb_ca.ca_rspdsc[0] >> 16;
while ((kr->kdb_sa & KDB_STEP4) == 0)
/* void */;
kr->kdb_sw = KDB_GO;
kdb.kdb_ca.ca_rspdsc[0] = (long)&kdb.kdb_rsp.mscp_cmdref;
kdb.kdb_ca.ca_cmddsc[0] = (long)&kdb.kdb_cmd.mscp_cmdref;
if (kdbcmd(M_OP_SETCTLRC, io)) {
printf("kra: open error, SETCTLRC\n");
return (ENXIO);
}
kdbinit[ctlr] = 1;
}
lp = &kralabel[ctlr][unit];
if (kramedia[ctlr][unit] == 0) {
kdb.kdb_cmd.mscp_unit = unit;
if (kdbcmd(M_OP_ONLINE, io)) {
printf("kra: open error, ONLINE\n");
return (ENXIO);
}
kramedia[ctlr][unit] = kdb.kdb_rsp.mscp_onle.onle_mediaid;
tio = *io;
tio.i_bn = LABELSECTOR;
tio.i_ma = lbuf;
tio.i_cc = SECTSIZ;
tio.i_flgs |= F_RDDATA;
if (krastrategy(&tio, READ) != SECTSIZ)
return (ERDLAB);
*lp = *(struct disklabel *)(lbuf + LABELOFFSET);
if (lp->d_magic != DISKMAGIC || lp->d_magic2 != DISKMAGIC) {
#ifdef COMPAT_42
printf("kra%d: unlabeled\n", unit);
kramaptype(io, lp);
#else
return (EUNLAB);
#endif
}
}
if ((u_int)io->i_part >= lp->d_npartitions ||
(io->i_boff = lp->d_partitions[io->i_part].p_offset) == -1)
return (EPART);
return (0);
}
kdbcmd(op, io)
int op;
struct iob *io;
{
register struct kdb *k = &kdb;
register struct mscp *mp;
register int i;
k->kdb_cmd.mscp_opcode = op;
k->kdb_rsp.mscp_msglen = MSCP_MSGLEN;
k->kdb_cmd.mscp_msglen = MSCP_MSGLEN;
k->kdb_ca.ca_rspdsc[0] |= MSCP_OWN | MSCP_INT;
k->kdb_ca.ca_cmddsc[0] |= MSCP_OWN | MSCP_INT;
i = ((struct kdb_regs *)kdbaddr[io->i_ctlr])->kdb_ip;
#ifdef lint
i = i;
#endif
mp = &k->kdb_rsp;
for (;;) {
if (k->kdb_ca.ca_cmdint)
k->kdb_ca.ca_cmdint = 0;
if (k->kdb_ca.ca_rspint == 0)
continue;
k->kdb_ca.ca_rspint = 0;
if (mp->mscp_opcode == (op | M_OP_END))
break;
printf("unexpected rsp type %x op %x ignored\n",
MSCP_MSGTYPE(mp->mscp_msgtc), mp->mscp_opcode);
k->kdb_ca.ca_rspdsc[0] |= MSCP_OWN | MSCP_INT;
}
if ((mp->mscp_status & M_ST_MASK) != M_ST_SUCCESS)
return (-1);
return (0);
}
krastrategy(io, func)
register struct iob *io;
int func;
{
register struct mscp *mp;
mp = &kdb.kdb_cmd;
mp->mscp_unit = io->i_unit;
mp->mscp_seq.seq_lbn = io->i_bn;
mp->mscp_seq.seq_bytecount = io->i_cc;
mp->mscp_seq.seq_buffer = (long)io->i_ma | KDB_PHYS;
if (kdbcmd(func == READ ? M_OP_READ : M_OP_WRITE, io)) {
printf("kra: I/O error\n");
return (-1);
}
return (io->i_cc);
}
#ifdef COMPAT_42
u_long kra60_off[] = { 0, 15884, 0, 49324, 131404, 49324, 242606, 49324 };
#define kra70_off kra60_off
u_long kra80_off[] = { 0, 15884, 0, -1, 49324, 49324, 49910, 131404 };
u_long kra81_off[] = { 0, 15884, 0, 131404, 49324, 498790, 563050, 131404 };
u_long kra82_off[] = { 0, 15884, 0, 375345, 391590, 699390, 375345, 83790 };
struct mediamap {
u_long id; /* media ID */
u_long *off; /* offsets */
} kra_map[] = {
{ MSCP_MKDRIVE2('R', 'A', 60), kra60_off },
{ MSCP_MKDRIVE2('R', 'A', 70), kra70_off },
{ MSCP_MKDRIVE2('R', 'A', 80), kra80_off },
{ MSCP_MKDRIVE2('R', 'A', 81), kra81_off },
{ MSCP_MKDRIVE2('R', 'A', 82), kra82_off },
0
};
kramaptype(io, lp)
register struct iob *io;
register struct disklabel *lp;
{
register struct partition *pp;
register u_long i;
register struct mediamap *map;
i = MSCP_MEDIA_DRIVE(kramedia[io->i_ctlr][io->i_unit]);
for (map = kra_map; map->id != 0; map++) {
if (map->id == i) {
lp->d_npartitions = 8;
for (pp = lp->d_partitions, i = 0; i < 8; pp++, i++)
pp->p_offset = map->off[i];
return;
}
}
printf("kra%d: media type 0x%x unsupported\n", io->i_unit, i);
lp->d_npartitions = 0;
}
#endif