858 lines
20 KiB
C
858 lines
20 KiB
C
/*
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* Copyright (c) 1982, 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)ct.c 7.3 (Berkeley) 5/4/91
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* $Id: ct.c,v 1.2 1993/08/01 19:23:54 mycroft Exp $
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*/
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#include "ct.h"
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#if NCT > 0
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/*
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* CS80 cartridge tape driver (9144, 88140, 9145)
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*
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* Reminder:
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* C_CC bit (character count option) when used in the CS/80 command
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* 'set options' will cause the tape not to stream.
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*
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* TODO:
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* make filesystem compatible
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* make block mode work according to mtio(4) spec. (if possible)
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* merge with cs80 disk driver
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* finish support of 9145
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*/
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#include "param.h"
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#include "buf.h"
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#include "ioctl.h"
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#include "mtio.h"
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#include "tprintf.h"
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#include "proc.h"
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#include "ctreg.h"
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#include "device.h"
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/* number of eof marks to remember */
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#define EOFS 128
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int ctinit(), ctstart(), ctgo(), ctintr();
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struct driver ctdriver = {
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ctinit, "ct", ctstart, ctgo, ctintr,
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};
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struct ct_softc {
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struct hp_device *sc_hd;
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struct ct_iocmd sc_ioc;
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struct ct_rscmd sc_rsc;
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struct ct_stat sc_stat;
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struct ct_ssmcmd sc_ssmc;
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struct ct_srcmd sc_src;
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struct ct_soptcmd sc_soptc;
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struct ct_ulcmd sc_ul;
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struct ct_wfmcmd sc_wfm;
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struct ct_clearcmd sc_clear;
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struct buf *sc_bp;
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int sc_blkno;
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int sc_cmd;
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int sc_resid;
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char *sc_addr;
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int sc_flags;
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short sc_type;
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short sc_punit;
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tpr_t sc_tpr;
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struct devqueue sc_dq;
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int sc_eofp;
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int sc_eofs[EOFS];
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} ct_softc[NCT];
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/* flags */
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#define CTF_OPEN 0x01
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#define CTF_ALIVE 0x02
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#define CTF_WRT 0x04
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#define CTF_CMD 0x08
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#define CTF_IO 0x10
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#define CTF_BEOF 0x20
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#define CTF_AEOF 0x40
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#define CTF_EOT 0x80
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#define CTF_STATWAIT 0x100
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#define CTF_CANSTREAM 0x200
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#define CTF_WRTTN 0x400
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struct ctinfo {
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short hwid;
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short punit;
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char *desc;
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} ctinfo[] = {
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CT7946ID, 1, "7946A",
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CT7912PID, 1, "7912P",
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CT7914PID, 1, "7914P",
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CT9144ID, 0, "9144",
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CT9145ID, 0, "9145",
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};
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int nctinfo = sizeof(ctinfo) / sizeof(ctinfo[0]);
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struct buf cttab[NCT];
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struct buf ctbuf[NCT];
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#define CT_NOREW 4
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#define CT_STREAM 8
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#define UNIT(x) (minor(x) & 3)
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#define ctpunit(x) ((x) & 7)
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#ifdef DEBUG
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int ctdebug = 0;
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#define CDB_FILES 0x01
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#define CT_BSF 0x02
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#endif
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ctinit(hd)
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register struct hp_device *hd;
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{
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register struct ct_softc *sc = &ct_softc[hd->hp_unit];
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sc->sc_hd = hd;
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sc->sc_punit = ctpunit(hd->hp_flags);
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if (ctident(sc, hd) < 0)
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return(0);
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ctreset(sc, hd);
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sc->sc_dq.dq_ctlr = hd->hp_ctlr;
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sc->sc_dq.dq_unit = hd->hp_unit;
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sc->sc_dq.dq_slave = hd->hp_slave;
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sc->sc_dq.dq_driver = &ctdriver;
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sc->sc_flags |= CTF_ALIVE;
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return(1);
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}
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ctident(sc, hd)
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register struct ct_softc *sc;
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register struct hp_device *hd;
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{
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struct ct_describe desc;
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u_char stat, cmd[3];
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char name[7];
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int id, i;
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/*
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* Read device id and verify that:
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* 1. It is a CS80 device
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* 2. It is one of our recognized tape devices
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* 3. It has the proper physical unit number
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*/
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id = hpibid(hd->hp_ctlr, hd->hp_slave);
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if ((id & 0x200) == 0)
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return(-1);
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for (i = 0; i < nctinfo; i++)
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if (id == ctinfo[i].hwid)
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break;
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if (i == nctinfo || sc->sc_punit != ctinfo[i].punit)
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return(-1);
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id = i;
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/*
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* Collect device description.
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* Right now we only need this to differentiate 7945 from 7946.
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* Note that we always issue the describe command to unit 0.
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*/
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cmd[0] = C_SUNIT(0);
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cmd[1] = C_SVOL(0);
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cmd[2] = C_DESC;
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hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, cmd, sizeof(cmd));
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hpibrecv(hd->hp_ctlr, hd->hp_slave, C_EXEC, &desc, 37);
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hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat));
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bzero(name, sizeof(name));
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if (!stat) {
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register int n = desc.d_name;
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for (i = 5; i >= 0; i--) {
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name[i] = (n & 0xf) + '0';
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n >>= 4;
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}
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}
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switch (ctinfo[id].hwid) {
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case CT7946ID:
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if (bcmp(name, "079450", 6) == 0)
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return(-1); /* not really a 7946 */
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/* fall into... */
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case CT9144ID:
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case CT9145ID:
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sc->sc_type = CT9144;
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sc->sc_flags |= CTF_CANSTREAM;
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break;
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case CT7912PID:
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case CT7914PID:
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sc->sc_type = CT88140;
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break;
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}
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printf("ct%d: %s %stape\n", hd->hp_unit, ctinfo[id].desc,
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(sc->sc_flags & CTF_CANSTREAM) ? "streaming " : " ");
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return(id);
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}
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ctreset(sc, hd)
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register struct ct_softc *sc;
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register struct hp_device *hd;
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{
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u_char stat;
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sc->sc_clear.unit = C_SUNIT(sc->sc_punit);
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sc->sc_clear.cmd = C_CLEAR;
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hpibsend(hd->hp_ctlr, hd->hp_slave, C_TCMD, &sc->sc_clear,
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sizeof(sc->sc_clear));
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hpibswait(hd->hp_ctlr, hd->hp_slave);
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hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat));
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sc->sc_src.unit = C_SUNIT(CTCTLR);
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sc->sc_src.nop = C_NOP;
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sc->sc_src.cmd = C_SREL;
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sc->sc_src.param = C_REL;
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hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_src,
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sizeof(sc->sc_src));
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hpibswait(hd->hp_ctlr, hd->hp_slave);
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hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat));
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sc->sc_ssmc.unit = C_SUNIT(sc->sc_punit);
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sc->sc_ssmc.cmd = C_SSM;
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sc->sc_ssmc.refm = REF_MASK;
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sc->sc_ssmc.fefm = FEF_MASK;
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sc->sc_ssmc.aefm = AEF_MASK;
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sc->sc_ssmc.iefm = IEF_MASK;
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hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_ssmc,
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sizeof(sc->sc_ssmc));
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hpibswait(hd->hp_ctlr, hd->hp_slave);
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hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat));
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sc->sc_soptc.unit = C_SUNIT(sc->sc_punit);
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sc->sc_soptc.nop = C_NOP;
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sc->sc_soptc.cmd = C_SOPT;
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sc->sc_soptc.opt = C_SPAR;
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hpibsend(hd->hp_ctlr, hd->hp_slave, C_CMD, &sc->sc_soptc,
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sizeof(sc->sc_soptc));
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hpibswait(hd->hp_ctlr, hd->hp_slave);
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hpibrecv(hd->hp_ctlr, hd->hp_slave, C_QSTAT, &stat, sizeof(stat));
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}
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/*ARGSUSED*/
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ctopen(dev, flag, type, p)
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dev_t dev;
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int flag, type;
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struct proc *p;
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{
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register struct ct_softc *sc = &ct_softc[UNIT(dev)];
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u_char stat;
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int cc;
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if (UNIT(dev) >= NCT || (sc->sc_flags & CTF_ALIVE) == 0)
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return(ENXIO);
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if (sc->sc_flags & CTF_OPEN)
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return(EBUSY);
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sc->sc_soptc.unit = C_SUNIT(sc->sc_punit);
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sc->sc_soptc.nop = C_NOP;
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sc->sc_soptc.cmd = C_SOPT;
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if ((dev & CT_STREAM) && (sc->sc_flags & CTF_CANSTREAM))
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sc->sc_soptc.opt = C_SPAR | C_IMRPT;
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else
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sc->sc_soptc.opt = C_SPAR;
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/*
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* Check the return of hpibsend() and hpibswait().
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* Drive could be loading/unloading a tape. If not checked,
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* driver hangs.
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*/
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cc = hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave,
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C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc));
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if (cc != sizeof(sc->sc_soptc))
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return(EBUSY);
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hpibswait(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave);
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cc = hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT,
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&stat, sizeof(stat));
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if (cc != sizeof(stat))
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return(EBUSY);
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sc->sc_tpr = tprintf_open(p);
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sc->sc_flags |= CTF_OPEN;
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return(0);
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}
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/*ARGSUSED*/
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ctclose(dev, flag)
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dev_t dev;
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{
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register struct ct_softc *sc = &ct_softc[UNIT(dev)];
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if ((sc->sc_flags & (CTF_WRT|CTF_WRTTN)) == (CTF_WRT|CTF_WRTTN) &&
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(sc->sc_flags & CTF_EOT) == 0 ) { /* XXX return error if EOT ?? */
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ctcommand(dev, MTWEOF, 2);
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ctcommand(dev, MTBSR, 1);
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if (sc->sc_eofp == EOFS - 1)
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sc->sc_eofs[EOFS - 1]--;
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else
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sc->sc_eofp--;
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#ifdef DEBUG
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if(ctdebug & CT_BSF)
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printf("ct%d: ctclose backup eofs prt %d blk %d\n",
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UNIT(dev), sc->sc_eofp, sc->sc_eofs[sc->sc_eofp]);
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#endif
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}
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if ((minor(dev) & CT_NOREW) == 0)
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ctcommand(dev, MTREW, 1);
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sc->sc_flags &= ~(CTF_OPEN | CTF_WRT | CTF_WRTTN);
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tprintf_close(sc->sc_tpr);
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#ifdef DEBUG
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if (ctdebug & CDB_FILES)
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printf("ctclose: flags %x\n", sc->sc_flags);
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#endif
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return(0); /* XXX */
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}
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ctcommand(dev, cmd, cnt)
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dev_t dev;
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register int cnt;
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{
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register struct ct_softc *sc = &ct_softc[UNIT(dev)];
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register struct buf *bp = &ctbuf[UNIT(dev)];
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register struct buf *nbp = 0;
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if (cmd == MTBSF && sc->sc_eofp == EOFS - 1) {
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cnt = sc->sc_eofs[EOFS - 1] - cnt;
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ctcommand(dev, MTREW, 1);
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ctcommand(dev, MTFSF, cnt);
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cnt = 2;
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cmd = MTBSR;
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}
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if (cmd == MTBSF && sc->sc_eofp - cnt < 0) {
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cnt = 1;
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cmd = MTREW;
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}
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sc->sc_flags |= CTF_CMD;
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sc->sc_bp = bp;
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sc->sc_cmd = cmd;
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bp->b_dev = dev;
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if (cmd == MTFSF) {
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nbp = (struct buf *)geteblk(MAXBSIZE);
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bp->b_un.b_addr = nbp->b_un.b_addr;
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bp->b_bcount = MAXBSIZE;
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}
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again:
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bp->b_flags = B_BUSY;
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if (cmd == MTBSF) {
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sc->sc_blkno = sc->sc_eofs[sc->sc_eofp];
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sc->sc_eofp--;
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#ifdef DEBUG
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if (ctdebug & CT_BSF)
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printf("ct%d: backup eof pos %d blk %d\n",
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UNIT(dev), sc->sc_eofp,
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sc->sc_eofs[sc->sc_eofp]);
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#endif
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}
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ctstrategy(bp);
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iowait(bp);
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if (--cnt > 0)
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goto again;
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bp->b_flags = 0;
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sc->sc_flags &= ~CTF_CMD;
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if (nbp)
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brelse(nbp);
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}
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ctstrategy(bp)
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register struct buf *bp;
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{
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register struct buf *dp;
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register int s, unit;
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unit = UNIT(bp->b_dev);
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dp = &cttab[unit];
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bp->av_forw = NULL;
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s = splbio();
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if (dp->b_actf == NULL)
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dp->b_actf = bp;
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else
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dp->b_actl->av_forw = bp;
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dp->b_actl = bp;
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if (dp->b_active == 0) {
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dp->b_active = 1;
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ctustart(unit);
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}
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splx(s);
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}
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ctustart(unit)
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register int unit;
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{
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register struct ct_softc *sc = &ct_softc[unit];
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register struct buf *bp;
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bp = cttab[unit].b_actf;
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sc->sc_addr = bp->b_un.b_addr;
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sc->sc_resid = bp->b_bcount;
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if (hpibreq(&sc->sc_dq))
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ctstart(unit);
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}
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ctstart(unit)
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register int unit;
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{
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register struct ct_softc *sc = &ct_softc[unit];
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register struct buf *bp;
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register int i;
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bp = cttab[unit].b_actf;
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again:
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if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) {
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switch(sc->sc_cmd) {
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case MTFSF:
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bp->b_flags |= B_READ;
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goto mustio;
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case MTBSF:
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goto gotaddr;
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case MTOFFL:
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sc->sc_blkno = 0;
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sc->sc_ul.unit = C_SUNIT(sc->sc_punit);
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sc->sc_ul.cmd = C_UNLOAD;
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hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave,
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C_CMD, &sc->sc_ul, sizeof(sc->sc_ul));
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break;
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case MTWEOF:
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sc->sc_blkno++;
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sc->sc_flags |= CTF_WRT;
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sc->sc_wfm.unit = C_SUNIT(sc->sc_punit);
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sc->sc_wfm.cmd = C_WFM;
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hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave,
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C_CMD, &sc->sc_wfm, sizeof(sc->sc_wfm));
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ctaddeof(unit);
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break;
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case MTBSR:
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sc->sc_blkno--;
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goto gotaddr;
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case MTFSR:
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sc->sc_blkno++;
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goto gotaddr;
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case MTREW:
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sc->sc_blkno = 0;
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#ifdef DEBUG
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if(ctdebug & CT_BSF)
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printf("ct%d: clearing eofs\n", unit);
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#endif
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for (i=0; i<EOFS; i++)
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sc->sc_eofs[i] = 0;
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sc->sc_eofp = 0;
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gotaddr:
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sc->sc_ioc.saddr = C_SADDR;
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sc->sc_ioc.addr0 = 0;
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sc->sc_ioc.addr = sc->sc_blkno;
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sc->sc_ioc.unit = C_SUNIT(sc->sc_punit);
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sc->sc_ioc.nop2 = C_NOP;
|
|
sc->sc_ioc.slen = C_SLEN;
|
|
sc->sc_ioc.len = 0;
|
|
sc->sc_ioc.nop3 = C_NOP;
|
|
sc->sc_ioc.cmd = C_READ;
|
|
hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave,
|
|
C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc));
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
mustio:
|
|
if ((bp->b_flags & B_READ) &&
|
|
sc->sc_flags & (CTF_BEOF|CTF_EOT)) {
|
|
#ifdef DEBUG
|
|
if (ctdebug & CDB_FILES)
|
|
printf("ctstart: before flags %x\n", sc->sc_flags);
|
|
#endif
|
|
if (sc->sc_flags & CTF_BEOF) {
|
|
sc->sc_flags &= ~CTF_BEOF;
|
|
sc->sc_flags |= CTF_AEOF;
|
|
#ifdef DEBUG
|
|
if (ctdebug & CDB_FILES)
|
|
printf("ctstart: after flags %x\n", sc->sc_flags);
|
|
#endif
|
|
}
|
|
bp->b_resid = bp->b_bcount;
|
|
iodone(bp);
|
|
hpibfree(&sc->sc_dq);
|
|
cttab[unit].b_actf = bp = bp->av_forw;
|
|
if (bp == NULL) {
|
|
cttab[unit].b_active = 0;
|
|
return;
|
|
}
|
|
sc->sc_addr = bp->b_un.b_addr;
|
|
sc->sc_resid = bp->b_bcount;
|
|
if (hpibreq(&sc->sc_dq))
|
|
goto again;
|
|
return;
|
|
}
|
|
sc->sc_flags |= CTF_IO;
|
|
sc->sc_ioc.unit = C_SUNIT(sc->sc_punit);
|
|
sc->sc_ioc.saddr = C_SADDR;
|
|
sc->sc_ioc.addr0 = 0;
|
|
sc->sc_ioc.addr = sc->sc_blkno;
|
|
sc->sc_ioc.nop2 = C_NOP;
|
|
sc->sc_ioc.slen = C_SLEN;
|
|
sc->sc_ioc.len = sc->sc_resid;
|
|
sc->sc_ioc.nop3 = C_NOP;
|
|
if (bp->b_flags & B_READ)
|
|
sc->sc_ioc.cmd = C_READ;
|
|
else {
|
|
sc->sc_ioc.cmd = C_WRITE;
|
|
sc->sc_flags |= (CTF_WRT | CTF_WRTTN);
|
|
}
|
|
hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD,
|
|
&sc->sc_ioc, sizeof(sc->sc_ioc));
|
|
}
|
|
hpibawait(sc->sc_hd->hp_ctlr);
|
|
}
|
|
|
|
ctgo(unit)
|
|
register int unit;
|
|
{
|
|
register struct ct_softc *sc = &ct_softc[unit];
|
|
register struct buf *bp;
|
|
|
|
bp = cttab[unit].b_actf;
|
|
hpibgo(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC,
|
|
sc->sc_addr, sc->sc_resid, bp->b_flags & B_READ);
|
|
}
|
|
|
|
/*
|
|
* Hideous grue to handle EOF/EOT (mostly for reads)
|
|
*/
|
|
cteof(sc, bp)
|
|
register struct ct_softc *sc;
|
|
register struct buf *bp;
|
|
{
|
|
long blks;
|
|
|
|
/*
|
|
* EOT on a write is an error.
|
|
*/
|
|
if ((bp->b_flags & B_READ) == 0) {
|
|
bp->b_resid = bp->b_bcount;
|
|
bp->b_flags |= B_ERROR;
|
|
bp->b_error = ENOSPC;
|
|
sc->sc_flags |= CTF_EOT;
|
|
return;
|
|
}
|
|
/*
|
|
* Use returned block position to determine how many blocks
|
|
* we really read and update b_resid.
|
|
*/
|
|
blks = sc->sc_stat.c_blk - sc->sc_blkno - 1;
|
|
#ifdef DEBUG
|
|
if (ctdebug & CDB_FILES)
|
|
printf("cteof: bc %d oblk %d nblk %d read %d, resid %d\n",
|
|
bp->b_bcount, sc->sc_blkno, sc->sc_stat.c_blk,
|
|
blks, bp->b_bcount - CTKTOB(blks));
|
|
#endif
|
|
if (blks == -1) { /* 9145 on EOF does not change sc_stat.c_blk */
|
|
blks = 0;
|
|
sc->sc_blkno++;
|
|
}
|
|
else {
|
|
sc->sc_blkno = sc->sc_stat.c_blk;
|
|
}
|
|
bp->b_resid = bp->b_bcount - CTKTOB(blks);
|
|
/*
|
|
* If we are at physical EOV or were after an EOF,
|
|
* we are now at logical EOT.
|
|
*/
|
|
if ((sc->sc_stat.c_aef & AEF_EOV) ||
|
|
(sc->sc_flags & CTF_AEOF)) {
|
|
sc->sc_flags |= CTF_EOT;
|
|
sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF);
|
|
}
|
|
/*
|
|
* If we were before an EOF or we have just completed a FSF,
|
|
* we are now after EOF.
|
|
*/
|
|
else if ((sc->sc_flags & CTF_BEOF) ||
|
|
(sc->sc_flags & CTF_CMD) && sc->sc_cmd == MTFSF) {
|
|
sc->sc_flags |= CTF_AEOF;
|
|
sc->sc_flags &= ~CTF_BEOF;
|
|
}
|
|
/*
|
|
* Otherwise if we read something we are now before EOF
|
|
* (and no longer after EOF).
|
|
*/
|
|
else if (blks) {
|
|
sc->sc_flags |= CTF_BEOF;
|
|
sc->sc_flags &= ~CTF_AEOF;
|
|
}
|
|
/*
|
|
* Finally, if we didn't read anything we just passed an EOF
|
|
*/
|
|
else
|
|
sc->sc_flags |= CTF_AEOF;
|
|
#ifdef DEBUG
|
|
if (ctdebug & CDB_FILES)
|
|
printf("cteof: leaving flags %x\n", sc->sc_flags);
|
|
#endif
|
|
}
|
|
|
|
ctintr(unit)
|
|
register int unit;
|
|
{
|
|
register struct ct_softc *sc = &ct_softc[unit];
|
|
register struct buf *bp;
|
|
u_char stat;
|
|
|
|
bp = cttab[unit].b_actf;
|
|
if (bp == NULL) {
|
|
printf("ct%d: bp == NULL\n", unit);
|
|
return;
|
|
}
|
|
if (sc->sc_flags & CTF_IO) {
|
|
sc->sc_flags &= ~CTF_IO;
|
|
if (hpibustart(sc->sc_hd->hp_ctlr))
|
|
ctgo(unit);
|
|
return;
|
|
}
|
|
if ((sc->sc_flags & CTF_STATWAIT) == 0) {
|
|
if (hpibpptest(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave) == 0) {
|
|
sc->sc_flags |= CTF_STATWAIT;
|
|
hpibawait(sc->sc_hd->hp_ctlr);
|
|
return;
|
|
}
|
|
} else
|
|
sc->sc_flags &= ~CTF_STATWAIT;
|
|
hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT, &stat, 1);
|
|
#ifdef DEBUG
|
|
if (ctdebug & CDB_FILES)
|
|
printf("ctintr: before flags %x\n", sc->sc_flags);
|
|
#endif
|
|
if (stat) {
|
|
sc->sc_rsc.unit = C_SUNIT(sc->sc_punit);
|
|
sc->sc_rsc.cmd = C_STATUS;
|
|
hpibsend(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_CMD,
|
|
&sc->sc_rsc, sizeof(sc->sc_rsc));
|
|
hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_EXEC,
|
|
&sc->sc_stat, sizeof(sc->sc_stat));
|
|
hpibrecv(sc->sc_hd->hp_ctlr, sc->sc_hd->hp_slave, C_QSTAT,
|
|
&stat, 1);
|
|
#ifdef DEBUG
|
|
if (ctdebug & CDB_FILES)
|
|
printf("ctintr: return stat 0x%x, A%x F%x blk %d\n",
|
|
stat, sc->sc_stat.c_aef,
|
|
sc->sc_stat.c_fef, sc->sc_stat.c_blk);
|
|
#endif
|
|
if (stat == 0) {
|
|
if (sc->sc_stat.c_aef & (AEF_EOF | AEF_EOV)) {
|
|
cteof(sc, bp);
|
|
ctaddeof(unit);
|
|
goto done;
|
|
}
|
|
if (sc->sc_stat.c_fef & FEF_PF) {
|
|
ctreset(sc, sc->sc_hd);
|
|
ctstart(unit);
|
|
return;
|
|
}
|
|
if (sc->sc_stat.c_fef & FEF_REXMT) {
|
|
ctstart(unit);
|
|
return;
|
|
}
|
|
if (sc->sc_stat.c_aef & 0x5800) {
|
|
if (sc->sc_stat.c_aef & 0x4000)
|
|
tprintf(sc->sc_tpr,
|
|
"ct%d: uninitialized media\n",
|
|
unit);
|
|
if (sc->sc_stat.c_aef & 0x1000)
|
|
tprintf(sc->sc_tpr,
|
|
"ct%d: not ready\n", unit);
|
|
if (sc->sc_stat.c_aef & 0x0800)
|
|
tprintf(sc->sc_tpr,
|
|
"ct%d: write protect\n", unit);
|
|
} else {
|
|
printf("ct%d err: v%d u%d ru%d bn%d, ",
|
|
unit,
|
|
(sc->sc_stat.c_vu>>4)&0xF,
|
|
sc->sc_stat.c_vu&0xF,
|
|
sc->sc_stat.c_pend,
|
|
sc->sc_stat.c_blk);
|
|
printf("R0x%x F0x%x A0x%x I0x%x\n",
|
|
sc->sc_stat.c_ref,
|
|
sc->sc_stat.c_fef,
|
|
sc->sc_stat.c_aef,
|
|
sc->sc_stat.c_ief);
|
|
}
|
|
} else
|
|
printf("ct%d: request status failed\n", unit);
|
|
bp->b_flags |= B_ERROR;
|
|
bp->b_error = EIO;
|
|
goto done;
|
|
} else
|
|
bp->b_resid = 0;
|
|
if (sc->sc_flags & CTF_CMD) {
|
|
switch (sc->sc_cmd) {
|
|
case MTFSF:
|
|
sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF);
|
|
sc->sc_blkno += CTBTOK(sc->sc_resid);
|
|
ctstart(unit);
|
|
return;
|
|
case MTBSF:
|
|
sc->sc_flags &= ~(CTF_AEOF|CTF_BEOF|CTF_EOT);
|
|
break;
|
|
case MTBSR:
|
|
sc->sc_flags &= ~CTF_BEOF;
|
|
if (sc->sc_flags & CTF_EOT) {
|
|
sc->sc_flags |= CTF_AEOF;
|
|
sc->sc_flags &= ~CTF_EOT;
|
|
} else if (sc->sc_flags & CTF_AEOF) {
|
|
sc->sc_flags |= CTF_BEOF;
|
|
sc->sc_flags &= ~CTF_AEOF;
|
|
}
|
|
break;
|
|
case MTWEOF:
|
|
sc->sc_flags &= ~CTF_BEOF;
|
|
if (sc->sc_flags & (CTF_AEOF|CTF_EOT)) {
|
|
sc->sc_flags |= CTF_EOT;
|
|
sc->sc_flags &= ~CTF_AEOF;
|
|
} else
|
|
sc->sc_flags |= CTF_AEOF;
|
|
break;
|
|
case MTREW:
|
|
case MTOFFL:
|
|
sc->sc_flags &= ~(CTF_BEOF|CTF_AEOF|CTF_EOT);
|
|
break;
|
|
}
|
|
} else {
|
|
sc->sc_flags &= ~CTF_AEOF;
|
|
sc->sc_blkno += CTBTOK(sc->sc_resid);
|
|
}
|
|
done:
|
|
#ifdef DEBUG
|
|
if (ctdebug & CDB_FILES)
|
|
printf("ctintr: after flags %x\n", sc->sc_flags);
|
|
#endif
|
|
cttab[unit].b_actf = bp->av_forw;
|
|
iodone(bp);
|
|
hpibfree(&sc->sc_dq);
|
|
if (cttab[unit].b_actf == NULL) {
|
|
cttab[unit].b_active = 0;
|
|
return;
|
|
}
|
|
ctustart(unit);
|
|
}
|
|
|
|
ctread(dev, uio)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
{
|
|
register int unit = UNIT(dev);
|
|
|
|
return(physio(ctstrategy, &ctbuf[unit], dev, B_READ, minphys, uio));
|
|
}
|
|
|
|
ctwrite(dev, uio)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
{
|
|
register int unit = UNIT(dev);
|
|
|
|
return(physio(ctstrategy, &ctbuf[unit], dev, B_WRITE, minphys, uio));
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
ctioctl(dev, cmd, data, flag)
|
|
dev_t dev;
|
|
caddr_t data;
|
|
{
|
|
register struct mtop *op;
|
|
register int cnt;
|
|
|
|
switch (cmd) {
|
|
|
|
case MTIOCTOP:
|
|
op = (struct mtop *)data;
|
|
switch(op->mt_op) {
|
|
|
|
case MTWEOF:
|
|
case MTFSF:
|
|
case MTBSR:
|
|
case MTBSF:
|
|
case MTFSR:
|
|
cnt = op->mt_count;
|
|
break;
|
|
|
|
case MTREW:
|
|
case MTOFFL:
|
|
cnt = 1;
|
|
break;
|
|
|
|
default:
|
|
return(EINVAL);
|
|
}
|
|
ctcommand(dev, op->mt_op, cnt);
|
|
break;
|
|
|
|
case MTIOCGET:
|
|
break;
|
|
|
|
default:
|
|
return(EINVAL);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
ctdump(dev)
|
|
dev_t dev;
|
|
{
|
|
return(ENXIO);
|
|
}
|
|
|
|
ctaddeof(unit)
|
|
int unit;
|
|
{
|
|
register struct ct_softc *sc = &ct_softc[unit];
|
|
|
|
if (sc->sc_eofp == EOFS - 1)
|
|
sc->sc_eofs[EOFS - 1]++;
|
|
else {
|
|
sc->sc_eofp++;
|
|
if (sc->sc_eofp == EOFS - 1)
|
|
sc->sc_eofs[EOFS - 1] = EOFS;
|
|
else
|
|
/* save blkno */
|
|
sc->sc_eofs[sc->sc_eofp] = sc->sc_blkno - 1;
|
|
}
|
|
#ifdef DEBUG
|
|
if (ctdebug & CT_BSF)
|
|
printf("ct%d: add eof pos %d blk %d\n",
|
|
unit, sc->sc_eofp,
|
|
sc->sc_eofs[sc->sc_eofp]);
|
|
#endif
|
|
}
|
|
#endif
|