289 lines
6.9 KiB
C
289 lines
6.9 KiB
C
/*
|
|
* Copyright (c) 1982, 1990, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* from: @(#)ct.c 8.1 (Berkeley) 7/15/93
|
|
* $Id: ct.c,v 1.4 1994/03/09 20:17:40 brezak Exp $
|
|
*/
|
|
|
|
/*
|
|
* CS80 tape driver
|
|
*/
|
|
#include <sys/param.h>
|
|
|
|
#include <hp300/dev/ctreg.h>
|
|
|
|
#include "stand.h"
|
|
#include "samachdep.h"
|
|
|
|
struct ct_iocmd ct_ioc;
|
|
struct ct_rscmd ct_rsc;
|
|
struct ct_stat ct_stat;
|
|
struct ct_ssmcmd ct_ssmc;
|
|
|
|
struct ct_softc {
|
|
int sc_ctlr;
|
|
int sc_unit;
|
|
char sc_retry;
|
|
char sc_alive;
|
|
short sc_punit;
|
|
int sc_blkno;
|
|
} ct_softc[NHPIB][NCT];
|
|
|
|
#define CTRETRY 5
|
|
#define MTFSF 10
|
|
#define MTREW 11
|
|
|
|
struct ctinfo {
|
|
short hwid;
|
|
short punit;
|
|
} ctinfo[] = {
|
|
CT7946ID, 1,
|
|
CT7912PID, 1,
|
|
CT7914PID, 1,
|
|
CT9144ID, 0,
|
|
CT9145ID, 0,
|
|
};
|
|
int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]);
|
|
|
|
ctinit(ctlr, unit)
|
|
register int ctlr, unit;
|
|
{
|
|
register struct ct_softc *rs = &ct_softc[ctlr][unit];
|
|
u_char stat;
|
|
register int type;
|
|
|
|
if (hpibrecv(ctlr, unit, C_QSTAT, &stat, 1) != 1 || stat)
|
|
return (0);
|
|
if (ctident(ctlr, unit) < 0)
|
|
return (0);
|
|
ct_ssmc.unit = C_SUNIT(rs->sc_punit);
|
|
ct_ssmc.cmd = C_SSM;
|
|
ct_ssmc.fefm = FEF_MASK;
|
|
ct_ssmc.refm = REF_MASK;
|
|
ct_ssmc.aefm = AEF_MASK;
|
|
ct_ssmc.iefm = IEF_MASK;
|
|
hpibsend(ctlr, unit, C_CMD, &ct_ssmc, sizeof(ct_ssmc));
|
|
hpibswait(ctlr, unit);
|
|
hpibrecv(ctlr, unit, C_QSTAT, &stat, 1);
|
|
rs->sc_alive = 1;
|
|
return (1);
|
|
}
|
|
|
|
ctident(ctlr, unit)
|
|
int ctlr, unit;
|
|
{
|
|
struct ct_describe desc;
|
|
u_char stat, cmd[3];
|
|
char name[7];
|
|
int id, i;
|
|
|
|
id = hpibid(ctlr, unit);
|
|
if ((id & 0x200) == 0)
|
|
return(-1);
|
|
for (i = 0; i < nctinfo; i++)
|
|
if (id == ctinfo[i].hwid)
|
|
break;
|
|
if (i == nctinfo)
|
|
return(-1);
|
|
ct_softc[ctlr][unit].sc_punit = ctinfo[i].punit;
|
|
id = i;
|
|
|
|
/*
|
|
* Collect device description.
|
|
* Right now we only need this to differentiate 7945 from 7946.
|
|
* Note that we always issue the describe command to unit 0.
|
|
*/
|
|
cmd[0] = C_SUNIT(0);
|
|
cmd[1] = C_SVOL(0);
|
|
cmd[2] = C_DESC;
|
|
hpibsend(ctlr, unit, C_CMD, cmd, sizeof(cmd));
|
|
hpibrecv(ctlr, unit, C_EXEC, &desc, 37);
|
|
hpibrecv(ctlr, unit, C_QSTAT, &stat, sizeof(stat));
|
|
bzero(name, sizeof(name));
|
|
if (!stat) {
|
|
register int n = desc.d_name;
|
|
for (i = 5; i >= 0; i--) {
|
|
name[i] = (n & 0xf) + '0';
|
|
n >>= 4;
|
|
}
|
|
}
|
|
switch (ctinfo[id].hwid) {
|
|
case CT7946ID:
|
|
if (bcmp(name, "079450", 6) == 0)
|
|
id = -1; /* not really a 7946 */
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return(id);
|
|
}
|
|
|
|
ctopen(f, ctlr, unit, part)
|
|
struct open_file *f;
|
|
int ctlr, unit, part;
|
|
{
|
|
register struct ct_softc *rs;
|
|
register int skip;
|
|
|
|
if (ctlr >= NHPIB || hpibalive(ctlr) == 0)
|
|
return(EADAPT);
|
|
if (unit >= NCT)
|
|
return(ECTLR);
|
|
rs = &ct_softc[ctlr][unit];
|
|
rs->sc_unit = unit;
|
|
rs->sc_ctlr = ctlr;
|
|
if (rs->sc_alive == 0)
|
|
if (ctinit(ctlr, unit) == 0)
|
|
return(ENXIO);
|
|
|
|
f->f_devdata = (void *)rs;
|
|
|
|
ctstrategy(f, MTREW);
|
|
skip = part;
|
|
while (skip--)
|
|
ctstrategy(f, MTFSF);
|
|
return(0);
|
|
}
|
|
|
|
ctclose(f)
|
|
struct open_file *f;
|
|
{
|
|
ctstrategy(f, MTREW);
|
|
}
|
|
|
|
char io_buf[MAXBSIZE];
|
|
|
|
ctstrategy(rs, func, dblk, size, buf, rsize)
|
|
register struct ct_softc *rs;
|
|
int func;
|
|
daddr_t dblk;
|
|
u_int size;
|
|
char *buf;
|
|
u_int *rsize;
|
|
{
|
|
register int ctlr = rs->sc_ctlr;
|
|
register int unit = rs->sc_unit;
|
|
char stat;
|
|
|
|
if (size == 0 && (func == F_READ || func == F_WRITE))
|
|
return(0);
|
|
|
|
rs->sc_retry = 0;
|
|
ct_ioc.unit = C_SUNIT(rs->sc_punit);
|
|
ct_ioc.saddr = C_SADDR;
|
|
ct_ioc.nop2 = C_NOP;
|
|
ct_ioc.slen = C_SLEN;
|
|
ct_ioc.nop3 = C_NOP;
|
|
top:
|
|
if (func == F_READ) {
|
|
ct_ioc.cmd = C_READ;
|
|
ct_ioc.addr = rs->sc_blkno;
|
|
ct_ioc.len = size;
|
|
}
|
|
else if (func == F_WRITE) {
|
|
ct_ioc.cmd = C_WRITE;
|
|
ct_ioc.addr = rs->sc_blkno;
|
|
ct_ioc.len = size;
|
|
}
|
|
else if (func == MTFSF) {
|
|
ct_ioc.cmd = C_READ;
|
|
ct_ioc.addr = rs->sc_blkno;
|
|
ct_ioc.len = size = MAXBSIZE;
|
|
buf = io_buf;
|
|
}
|
|
else {
|
|
ct_ioc.cmd = C_READ;
|
|
ct_ioc.addr = 0;
|
|
ct_ioc.len = 0;
|
|
rs->sc_blkno = 0;
|
|
size = 0;
|
|
}
|
|
retry:
|
|
hpibsend(ctlr, unit, C_CMD, &ct_ioc, sizeof(ct_ioc));
|
|
if (func != MTREW) {
|
|
hpibswait(ctlr, unit);
|
|
hpibgo(ctlr, unit, C_EXEC, buf, size,
|
|
func != F_WRITE ? F_READ : F_WRITE);
|
|
hpibswait(ctlr, unit);
|
|
} else {
|
|
while (hpibswait(ctlr, unit) < 0)
|
|
;
|
|
}
|
|
hpibrecv(ctlr, unit, C_QSTAT, &stat, 1);
|
|
if (stat) {
|
|
stat = cterror(ctlr, unit);
|
|
if (stat == 0)
|
|
return (-1);
|
|
if (stat == 2)
|
|
return (0);
|
|
if (++rs->sc_retry > CTRETRY)
|
|
return (-1);
|
|
goto retry;
|
|
}
|
|
rs->sc_blkno += CTBTOK(size);
|
|
if (func == MTFSF)
|
|
goto top;
|
|
*rsize = size;
|
|
|
|
return(0);
|
|
}
|
|
|
|
cterror(ctlr, unit)
|
|
register int ctlr, unit;
|
|
{
|
|
register struct ct_softc *rs = &ct_softc[ctlr][unit];
|
|
char stat;
|
|
|
|
ct_rsc.unit = C_SUNIT(rs->sc_punit);
|
|
ct_rsc.cmd = C_STATUS;
|
|
hpibsend(ctlr, unit, C_CMD, &ct_rsc, sizeof(ct_rsc));
|
|
hpibrecv(ctlr, unit, C_EXEC, &ct_stat, sizeof(ct_stat));
|
|
hpibrecv(ctlr, unit, C_QSTAT, &stat, 1);
|
|
if (stat) {
|
|
printf("ct%d: request status fail %d\n", unit, stat);
|
|
return(0);
|
|
}
|
|
if (ct_stat.c_aef & AEF_EOF) {
|
|
/* 9145 drives don't increment block number at EOF */
|
|
if ((ct_stat.c_blk - rs->sc_blkno) == 0)
|
|
rs->sc_blkno++;
|
|
else
|
|
rs->sc_blkno = ct_stat.c_blk;
|
|
return (2);
|
|
}
|
|
printf("ct%d err: vu 0x%x, pend 0x%x, bn%d", unit,
|
|
ct_stat.c_vu, ct_stat.c_pend, ct_stat.c_blk);
|
|
printf(", R 0x%x F 0x%x A 0x%x I 0x%x\n", ct_stat.c_ref,
|
|
ct_stat.c_fef, ct_stat.c_aef, ct_stat.c_ief);
|
|
return (1);
|
|
}
|