4.4BSD/usr/src/sys/hp300/stand/ct.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.
*
* @(#)ct.c 8.1 (Berkeley) 7/15/93
*/
/*
* CS80 tape driver
*/
#include <sys/param.h>
#include <hp300/dev/ctreg.h>
#include <stand.att/saio.h>
#include <hp300/stand/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 {
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(io)
struct iob *io;
{
register struct ct_softc *rs;
register int unit, ctlr;
register int skip;
devconvert(io);
ctlr = io->i_adapt;
if (ctlr >= NHPIB || hpibalive(ctlr) == 0)
return(EADAPT);
unit = io->i_ctlr;
if (unit >= NCT)
return(ECTLR);
rs = &ct_softc[ctlr][unit];
if (rs->sc_alive == 0)
if (ctinit(ctlr, unit) == 0)
return(ENXIO);
ctstrategy(io, MTREW);
skip = io->i_part;
while (skip--)
ctstrategy(io, MTFSF);
return(0);
}
ctclose(io)
struct iob *io;
{
ctstrategy(io, MTREW);
}
ctstrategy(io, func)
register struct iob *io;
register int func;
{
register int ctlr = io->i_adapt;
register int unit = io->i_ctlr;
register struct ct_softc *rs = &ct_softc[ctlr][unit];
char stat;
if (io->i_cc == 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 = io->i_cc;
}
else if (func == F_WRITE) {
ct_ioc.cmd = C_WRITE;
ct_ioc.addr = rs->sc_blkno;
ct_ioc.len = io->i_cc;
}
else if (func == MTFSF) {
ct_ioc.cmd = C_READ;
ct_ioc.addr = rs->sc_blkno;
ct_ioc.len = io->i_cc = MAXBSIZE;
io->i_ma = io->i_buf;
}
else {
ct_ioc.cmd = C_READ;
ct_ioc.addr = 0;
ct_ioc.len = 0;
rs->sc_blkno = 0;
io->i_cc = 0;
}
retry:
hpibsend(ctlr, unit, C_CMD, &ct_ioc, sizeof(ct_ioc));
if (func != MTREW) {
hpibswait(ctlr, unit);
hpibgo(ctlr, unit, C_EXEC, io->i_ma, io->i_cc,
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(io->i_cc);
if (func == MTFSF)
goto top;
return (io->i_cc);
}
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);
}