989 lines
23 KiB
C
989 lines
23 KiB
C
/* $NetBSD: ct.c,v 1.25 2000/05/19 18:54:31 thorpej Exp $ */
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/*-
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* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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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 NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1982, 1990, 1993
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* The Regents of the University of California. 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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* @(#)ct.c 8.2 (Berkeley) 1/12/94
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*/
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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 <sys/param.h>
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#include <sys/systm.h>
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#include <sys/buf.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/ioctl.h>
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#include <sys/mtio.h>
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#include <sys/proc.h>
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#include <sys/tprintf.h>
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#include <hp300/dev/hpibvar.h>
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#include <hp300/dev/ctreg.h>
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/* number of eof marks to remember */
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#define EOFS 128
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struct ct_softc {
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struct device sc_dev;
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int sc_slave; /* HP-IB slave ID */
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int sc_punit; /* physical unit */
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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_queue sc_tab;
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int sc_active;
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struct buf *sc_bp;
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struct buf sc_bufstore; /* XXX */
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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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tpr_t sc_tpr;
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struct hpibqueue sc_hq; /* entry on hpib job queue */
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int sc_eofp;
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int sc_eofs[EOFS];
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};
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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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int ctmatch __P((struct device *, struct cfdata *, void *));
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void ctattach __P((struct device *, struct device *, void *));
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struct cfattach ct_ca = {
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sizeof(struct ct_softc), ctmatch, ctattach
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};
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extern struct cfdriver ct_cd;
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int ctident __P((struct device *, struct ct_softc *,
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struct hpibbus_attach_args *));
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void ctreset __P((struct ct_softc *));
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void ctaddeof __P((struct ct_softc *));
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void ctustart __P((struct ct_softc *));
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void cteof __P((struct ct_softc *, struct buf *));
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void ctdone __P((struct ct_softc *, struct buf *));
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void ctstart __P((void *));
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void ctgo __P((void *));
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void ctintr __P((void *));
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void ctcommand __P((dev_t, int, int));
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cdev_decl(ct);
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bdev_decl(ct);
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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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#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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int
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ctmatch(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct hpibbus_attach_args *ha = aux;
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return (ctident(parent, NULL, ha));
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}
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void
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ctattach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct ct_softc *sc = (struct ct_softc *)self;
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struct hpibbus_attach_args *ha = aux;
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if (ctident(parent, sc, ha) == 0) {
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printf("\n%s: didn't respond to describe command!\n",
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sc->sc_dev.dv_xname);
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return;
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}
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sc->sc_slave = ha->ha_slave;
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sc->sc_punit = ha->ha_punit;
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BUFQ_INIT(&sc->sc_tab);
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/* Initialize hpib job queue entry. */
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sc->sc_hq.hq_softc = sc;
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sc->sc_hq.hq_slave = sc->sc_slave;
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sc->sc_hq.hq_start = ctstart;
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sc->sc_hq.hq_go = ctgo;
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sc->sc_hq.hq_intr = ctintr;
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ctreset(sc);
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sc->sc_flags |= CTF_ALIVE;
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}
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int
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ctident(parent, sc, ha)
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struct device *parent;
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struct ct_softc *sc;
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struct hpibbus_attach_args *ha;
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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 i, id, n, type, canstream;
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type = canstream = 0;
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/* Verify that we have a CS80 device. */
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if ((ha->ha_id & 0x200) == 0)
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return (0);
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/* Is it one of the tapes we support? */
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for (id = 0; id < nctinfo; id++)
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if (ha->ha_id == ctinfo[id].hwid)
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break;
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if (id == nctinfo)
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return (0);
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ha->ha_punit = ctinfo[id].punit;
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/*
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* So far, so good. Get drive parameters. Note command
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* is always issued 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(parent->dv_unit, ha->ha_slave, C_CMD, cmd, sizeof(cmd));
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hpibrecv(parent->dv_unit, ha->ha_slave, C_EXEC, &desc, 37);
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hpibrecv(parent->dv_unit, ha->ha_slave, C_QSTAT, &stat, sizeof(stat));
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bzero(name, sizeof(name));
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if (stat == 0) {
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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 (ha->ha_id) {
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case CT7946ID:
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if (bcmp(name, "079450", 6) == 0)
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return (0); /* 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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type = CT9144;
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canstream = 1;
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break;
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case CT7912PID:
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case CT7914PID:
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type = CT88140;
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break;
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}
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if (sc != NULL) {
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sc->sc_type = type;
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sc->sc_flags = canstream ? CTF_CANSTREAM : 0;
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printf(": %s %stape\n", ctinfo[id].desc,
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canstream ? "streaming " : "");
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}
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return (1);
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}
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void
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ctreset(sc)
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struct ct_softc *sc;
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{
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int ctlr, slave;
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u_char stat;
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ctlr = sc->sc_dev.dv_parent->dv_unit;
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slave = sc->sc_slave;
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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(ctlr, slave, C_TCMD, &sc->sc_clear, sizeof(sc->sc_clear));
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hpibswait(ctlr, slave);
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hpibrecv(ctlr, 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(ctlr, slave, C_CMD, &sc->sc_src, sizeof(sc->sc_src));
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hpibswait(ctlr, slave);
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hpibrecv(ctlr, 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(ctlr, slave, C_CMD, &sc->sc_ssmc, sizeof(sc->sc_ssmc));
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hpibswait(ctlr, slave);
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hpibrecv(ctlr, 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(ctlr, slave, C_CMD, &sc->sc_soptc, sizeof(sc->sc_soptc));
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hpibswait(ctlr, slave);
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hpibrecv(ctlr, slave, C_QSTAT, &stat, sizeof(stat));
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}
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/*ARGSUSED*/
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int
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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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struct ct_softc *sc;
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u_char stat;
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int cc, ctlr, slave;
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if (UNIT(dev) >= ct_cd.cd_ndevs ||
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(sc = ct_cd.cd_devs[UNIT(dev)]) == NULL ||
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(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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ctlr = sc->sc_dev.dv_parent->dv_unit;
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slave = sc->sc_slave;
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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(ctlr, slave, 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(ctlr, slave);
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cc = hpibrecv(ctlr, slave, C_QSTAT, &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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int
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ctclose(dev, flag, fmt, p)
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dev_t dev;
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int flag, fmt;
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struct proc *p;
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{
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struct ct_softc *sc = ct_cd.cd_devs[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("%s: ctclose backup eofs prt %d blk %d\n",
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sc->sc_dev.dv_xname, 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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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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void
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ctcommand(dev, cmd, cnt)
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dev_t dev;
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int cmd;
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int cnt;
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{
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struct ct_softc *sc = ct_cd.cd_devs[UNIT(dev)];
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struct buf *bp = &sc->sc_bufstore;
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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_data = nbp->b_data;
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bp->b_bcount = MAXBSIZE;
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}
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while (cnt-- > 0) {
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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("%s: backup eof pos %d blk %d\n",
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sc->sc_dev.dv_xname, 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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biowait(bp);
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}
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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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void
|
|
ctstrategy(bp)
|
|
struct buf *bp;
|
|
{
|
|
int s, unit;
|
|
struct ct_softc *sc;
|
|
|
|
unit = UNIT(bp->b_dev);
|
|
sc = ct_cd.cd_devs[unit];
|
|
|
|
s = splbio();
|
|
BUFQ_INSERT_TAIL(&sc->sc_tab, bp);
|
|
if (sc->sc_active == 0) {
|
|
sc->sc_active = 1;
|
|
ctustart(sc);
|
|
}
|
|
splx(s);
|
|
}
|
|
|
|
void
|
|
ctustart(sc)
|
|
struct ct_softc *sc;
|
|
{
|
|
struct buf *bp;
|
|
|
|
bp = BUFQ_FIRST(&sc->sc_tab);
|
|
sc->sc_addr = bp->b_data;
|
|
sc->sc_resid = bp->b_bcount;
|
|
if (hpibreq(sc->sc_dev.dv_parent, &sc->sc_hq))
|
|
ctstart(sc);
|
|
}
|
|
|
|
void
|
|
ctstart(arg)
|
|
void *arg;
|
|
{
|
|
struct ct_softc *sc = arg;
|
|
struct buf *bp;
|
|
int i, ctlr, slave;
|
|
|
|
ctlr = sc->sc_dev.dv_parent->dv_unit;
|
|
slave = sc->sc_slave;
|
|
|
|
bp = BUFQ_FIRST(&sc->sc_tab);
|
|
if ((sc->sc_flags & CTF_CMD) && sc->sc_bp == bp) {
|
|
switch(sc->sc_cmd) {
|
|
case MTFSF:
|
|
bp->b_flags |= B_READ;
|
|
goto mustio;
|
|
|
|
case MTBSF:
|
|
goto gotaddr;
|
|
|
|
case MTOFFL:
|
|
sc->sc_blkno = 0;
|
|
sc->sc_ul.unit = C_SUNIT(sc->sc_punit);
|
|
sc->sc_ul.cmd = C_UNLOAD;
|
|
hpibsend(ctlr, slave, C_CMD, &sc->sc_ul,
|
|
sizeof(sc->sc_ul));
|
|
break;
|
|
|
|
case MTWEOF:
|
|
sc->sc_blkno++;
|
|
sc->sc_flags |= CTF_WRT;
|
|
sc->sc_wfm.unit = C_SUNIT(sc->sc_punit);
|
|
sc->sc_wfm.cmd = C_WFM;
|
|
hpibsend(ctlr, slave, C_CMD, &sc->sc_wfm,
|
|
sizeof(sc->sc_wfm));
|
|
ctaddeof(sc);
|
|
break;
|
|
|
|
case MTBSR:
|
|
sc->sc_blkno--;
|
|
goto gotaddr;
|
|
|
|
case MTFSR:
|
|
sc->sc_blkno++;
|
|
goto gotaddr;
|
|
|
|
case MTREW:
|
|
sc->sc_blkno = 0;
|
|
#ifdef DEBUG
|
|
if(ctdebug & CT_BSF)
|
|
printf("%s: clearing eofs\n",
|
|
sc->sc_dev.dv_xname);
|
|
#endif
|
|
for (i=0; i<EOFS; i++)
|
|
sc->sc_eofs[i] = 0;
|
|
sc->sc_eofp = 0;
|
|
|
|
gotaddr:
|
|
sc->sc_ioc.saddr = C_SADDR;
|
|
sc->sc_ioc.addr0 = 0;
|
|
sc->sc_ioc.addr = sc->sc_blkno;
|
|
sc->sc_ioc.unit = C_SUNIT(sc->sc_punit);
|
|
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(ctlr, 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;
|
|
ctdone(sc, bp);
|
|
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(ctlr, slave, C_CMD, &sc->sc_ioc, sizeof(sc->sc_ioc));
|
|
}
|
|
hpibawait(ctlr);
|
|
}
|
|
|
|
void
|
|
ctgo(arg)
|
|
void *arg;
|
|
{
|
|
struct ct_softc *sc = arg;
|
|
struct buf *bp;
|
|
int rw;
|
|
|
|
bp = BUFQ_FIRST(&sc->sc_tab);
|
|
rw = bp->b_flags & B_READ;
|
|
hpibgo(sc->sc_dev.dv_parent->dv_unit, sc->sc_slave, C_EXEC,
|
|
sc->sc_addr, sc->sc_resid, rw, rw != 0);
|
|
}
|
|
|
|
/*
|
|
* Hideous grue to handle EOF/EOT (mostly for reads)
|
|
*/
|
|
void
|
|
cteof(sc, bp)
|
|
struct ct_softc *sc;
|
|
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 %ld oblk %d nblk %ld read %ld, resid %ld\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
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
void
|
|
ctintr(arg)
|
|
void *arg;
|
|
{
|
|
struct ct_softc *sc = arg;
|
|
struct buf *bp;
|
|
u_char stat;
|
|
int ctlr, slave, unit;
|
|
|
|
ctlr = sc->sc_dev.dv_parent->dv_unit;
|
|
slave = sc->sc_slave;
|
|
unit = sc->sc_dev.dv_unit;
|
|
|
|
bp = BUFQ_FIRST(&sc->sc_tab);
|
|
if (bp == NULL) {
|
|
printf("%s: bp == NULL\n", sc->sc_dev.dv_xname);
|
|
return;
|
|
}
|
|
if (sc->sc_flags & CTF_IO) {
|
|
sc->sc_flags &= ~CTF_IO;
|
|
if (hpibustart(ctlr))
|
|
ctgo(sc);
|
|
return;
|
|
}
|
|
if ((sc->sc_flags & CTF_STATWAIT) == 0) {
|
|
if (hpibpptest(ctlr, slave) == 0) {
|
|
sc->sc_flags |= CTF_STATWAIT;
|
|
hpibawait(ctlr);
|
|
return;
|
|
}
|
|
} else
|
|
sc->sc_flags &= ~CTF_STATWAIT;
|
|
hpibrecv(ctlr, 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(ctlr, slave, C_CMD, &sc->sc_rsc, sizeof(sc->sc_rsc));
|
|
hpibrecv(ctlr, slave, C_EXEC, &sc->sc_stat,
|
|
sizeof(sc->sc_stat));
|
|
hpibrecv(ctlr, slave, C_QSTAT, &stat, 1);
|
|
#ifdef DEBUG
|
|
if (ctdebug & CDB_FILES)
|
|
printf("ctintr: return stat 0x%x, A%x F%x blk %ld\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(sc);
|
|
goto done;
|
|
}
|
|
if (sc->sc_stat.c_fef & FEF_PF) {
|
|
ctreset(sc);
|
|
ctstart(sc);
|
|
return;
|
|
}
|
|
if (sc->sc_stat.c_fef & FEF_REXMT) {
|
|
ctstart(sc);
|
|
return;
|
|
}
|
|
if (sc->sc_stat.c_aef & 0x5800) {
|
|
if (sc->sc_stat.c_aef & 0x4000)
|
|
tprintf(sc->sc_tpr,
|
|
"%s: uninitialized media\n",
|
|
sc->sc_dev.dv_xname);
|
|
if (sc->sc_stat.c_aef & 0x1000)
|
|
tprintf(sc->sc_tpr,
|
|
"%s: not ready\n",
|
|
sc->sc_dev.dv_xname);
|
|
if (sc->sc_stat.c_aef & 0x0800)
|
|
tprintf(sc->sc_tpr,
|
|
"%s: write protect\n",
|
|
sc->sc_dev.dv_xname);
|
|
} else {
|
|
printf("%s err: v%d u%d ru%d bn%ld, ",
|
|
sc->sc_dev.dv_xname,
|
|
(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("%s: request status failed\n",
|
|
sc->sc_dev.dv_xname);
|
|
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(sc);
|
|
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
|
|
ctdone(sc, bp);
|
|
}
|
|
|
|
void
|
|
ctdone(sc, bp)
|
|
struct ct_softc *sc;
|
|
struct buf *bp;
|
|
{
|
|
|
|
BUFQ_REMOVE(&sc->sc_tab, bp);
|
|
biodone(bp);
|
|
hpibfree(sc->sc_dev.dv_parent, &sc->sc_hq);
|
|
if (BUFQ_FIRST(&sc->sc_tab) == NULL) {
|
|
sc->sc_active = 0;
|
|
return;
|
|
}
|
|
ctustart(sc);
|
|
}
|
|
|
|
int
|
|
ctread(dev, uio, flags)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int flags;
|
|
{
|
|
return (physio(ctstrategy, NULL, dev, B_READ, minphys, uio));
|
|
}
|
|
|
|
int
|
|
ctwrite(dev, uio, flags)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int flags;
|
|
{
|
|
/* XXX: check for hardware write-protect? */
|
|
return (physio(ctstrategy, NULL, dev, B_WRITE, minphys, uio));
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
int
|
|
ctioctl(dev, cmd, data, flag, p)
|
|
dev_t dev;
|
|
u_long cmd;
|
|
int flag;
|
|
caddr_t data;
|
|
struct proc *p;
|
|
{
|
|
struct mtop *op;
|
|
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 */
|
|
int
|
|
ctdump(dev, blkno, va, size)
|
|
dev_t dev;
|
|
daddr_t blkno;
|
|
caddr_t va;
|
|
size_t size;
|
|
{
|
|
|
|
return (ENODEV);
|
|
}
|
|
|
|
void
|
|
ctaddeof(sc)
|
|
struct ct_softc *sc;
|
|
{
|
|
|
|
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("%s: add eof pos %d blk %d\n",
|
|
sc->sc_dev.dv_xname, sc->sc_eofp,
|
|
sc->sc_eofs[sc->sc_eofp]);
|
|
#endif
|
|
}
|