1996-09-18 06:34:31 +04:00
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/* $NetBSD: ch.c,v 1.22 1996/09/18 02:34:31 thorpej Exp $ */
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1994-06-29 10:39:25 +04:00
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1993-03-21 21:04:42 +03:00
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/*
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1996-04-03 04:25:21 +04:00
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* Copyright (c) 1996 Jason R. Thorpe <thorpej@and.com>
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* All rights reserved.
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*
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* Partially based on an autochanger driver written by Stefan Grefen
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* and on an autochanger driver written by the Systems Programming Group
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* at the University of Utah Computer Science Department.
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1994-03-29 08:29:20 +04:00
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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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1996-04-03 04:25:21 +04:00
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* must display the following acknowledgements:
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* This product includes software developed by Jason R. Thorpe
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* for And Communications, http://www.and.com/
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1994-03-29 08:29:20 +04:00
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
1996-04-03 04:25:21 +04:00
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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1994-03-29 08:29:20 +04:00
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*/
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1993-03-21 21:04:42 +03:00
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/buf.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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1996-04-03 04:25:21 +04:00
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#include <sys/chio.h>
|
1994-03-29 08:29:20 +04:00
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#include <sys/device.h>
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1996-04-03 04:25:21 +04:00
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#include <sys/malloc.h>
|
1996-04-19 04:02:29 +04:00
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#include <sys/conf.h>
|
1996-09-18 06:34:31 +04:00
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#include <sys/fcntl.h>
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1993-03-21 21:04:42 +03:00
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#include <scsi/scsi_all.h>
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#include <scsi/scsi_changer.h>
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#include <scsi/scsiconf.h>
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|
1996-04-03 04:25:21 +04:00
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#define CHRETRIES 2
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#define CHUNIT(x) (minor((x)))
|
1994-03-29 08:29:20 +04:00
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|
1994-12-28 22:42:47 +03:00
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struct ch_softc {
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1996-04-03 04:25:21 +04:00
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struct device sc_dev; /* generic device info */
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struct scsi_link *sc_link; /* link in the SCSI bus */
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int sc_picker; /* current picker */
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/*
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* The following information is obtained from the
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* element address assignment page.
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*/
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int sc_firsts[4]; /* firsts, indexed by CHET_* */
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int sc_counts[4]; /* counts, indexed by CHET_* */
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/*
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* The following mask defines the legal combinations
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* of elements for the MOVE MEDIUM command.
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*/
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u_int8_t sc_movemask[4];
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/*
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* As above, but for EXCHANGE MEDIUM.
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*/
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u_int8_t sc_exchangemask[4];
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int flags; /* misc. info */
|
1994-03-29 08:29:20 +04:00
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};
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|
1996-04-03 04:25:21 +04:00
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/* sc_flags */
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#define CHF_ROTATE 0x01 /* picker can rotate */
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/* Autoconfiguration glue */
|
1996-02-15 00:46:52 +03:00
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int chmatch __P((struct device *, void *, void *));
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void chattach __P((struct device *, struct device *, void *));
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1994-03-29 08:29:20 +04:00
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|
1996-03-17 03:57:14 +03:00
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struct cfattach ch_ca = {
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sizeof(struct ch_softc), chmatch, chattach
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};
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struct cfdriver ch_cd = {
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NULL, "ch", DV_DULL
|
1994-03-29 08:29:20 +04:00
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};
|
1993-03-21 21:04:42 +03:00
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|
1994-12-28 22:42:47 +03:00
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struct scsi_inquiry_pattern ch_patterns[] = {
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{T_CHANGER, T_REMOV,
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1996-04-03 04:25:21 +04:00
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"", "", ""},
|
1994-12-28 22:42:47 +03:00
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};
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|
1996-04-03 04:25:21 +04:00
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/* SCSI glue */
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struct scsi_device ch_switch = {
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NULL, NULL, NULL, NULL
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};
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int ch_move __P((struct ch_softc *, struct changer_move *));
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int ch_exchange __P((struct ch_softc *, struct changer_exchange *));
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int ch_position __P((struct ch_softc *, struct changer_position *));
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int ch_usergetelemstatus __P((struct ch_softc *, int, u_int8_t *));
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int ch_getelemstatus __P((struct ch_softc *, int, int, caddr_t, size_t));
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int ch_get_params __P((struct ch_softc *, int));
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|
1994-12-28 22:42:47 +03:00
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int
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chmatch(parent, match, aux)
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struct device *parent;
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void *match, *aux;
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{
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struct scsibus_attach_args *sa = aux;
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int priority;
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(void)scsi_inqmatch(sa->sa_inqbuf,
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(caddr_t)ch_patterns, sizeof(ch_patterns)/sizeof(ch_patterns[0]),
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sizeof(ch_patterns[0]), &priority);
|
1996-04-03 04:25:21 +04:00
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1994-12-28 22:42:47 +03:00
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return (priority);
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}
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|
1996-04-03 04:25:21 +04:00
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void
|
1994-03-29 08:29:20 +04:00
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chattach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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1993-03-21 21:04:42 +03:00
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{
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1996-04-03 04:25:21 +04:00
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struct ch_softc *sc = (struct ch_softc *)self;
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1994-12-28 22:42:47 +03:00
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struct scsibus_attach_args *sa = aux;
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1996-04-03 04:25:21 +04:00
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struct scsi_link *link = sa->sa_sc_link;
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1993-03-21 21:04:42 +03:00
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1996-04-03 04:25:21 +04:00
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/* Glue into the SCSI bus */
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sc->sc_link = link;
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link->device = &ch_switch;
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link->device_softc = sc;
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link->openings = 1;
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1994-03-29 08:29:20 +04:00
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1996-04-03 04:25:21 +04:00
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printf("\n");
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1994-03-29 08:29:20 +04:00
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/*
|
1996-04-03 04:25:21 +04:00
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* Get information about the device. Note we can't use
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* interrupts yet.
|
1994-03-29 08:29:20 +04:00
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*/
|
1996-04-03 04:25:21 +04:00
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if (ch_get_params(sc, SCSI_AUTOCONF))
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printf("%s: offline\n", sc->sc_dev.dv_xname);
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else {
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printf("%s: %d slot%s, %d drive%s, %d picker%s",
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sc->sc_dev.dv_xname,
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sc->sc_counts[CHET_ST], (sc->sc_counts[CHET_ST] > 1) ?
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"s" : "",
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sc->sc_counts[CHET_DT], (sc->sc_counts[CHET_DT] > 1) ?
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"s" : "",
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sc->sc_counts[CHET_MT], (sc->sc_counts[CHET_MT] > 1) ?
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"s" : "");
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if (sc->sc_counts[CHET_IE])
|
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printf(", %d portal%s", sc->sc_counts[CHET_IE],
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|
|
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(sc->sc_counts[CHET_IE] > 1) ? "s" : "");
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printf("\n");
|
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|
|
#ifdef CHANGER_DEBUG
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|
|
printf("%s: move mask: 0x%x 0x%x 0x%x 0x%x\n",
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|
|
sc->sc_dev.dv_xname,
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sc->sc_movemask[CHET_MT], sc->sc_movemask[CHET_ST],
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sc->sc_movemask[CHET_IE], sc->sc_movemask[CHET_DT]);
|
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|
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printf("%s: exchange mask: 0x%x 0x%x 0x%x 0x%x\n",
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|
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sc->sc_dev.dv_xname,
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sc->sc_exchangemask[CHET_MT], sc->sc_exchangemask[CHET_ST],
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|
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sc->sc_exchangemask[CHET_IE], sc->sc_exchangemask[CHET_DT]);
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|
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#endif /* CHANGER_DEBUG */
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|
|
}
|
|
|
|
|
|
|
|
/* Default the current picker. */
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|
|
|
sc->sc_picker = sc->sc_firsts[CHET_MT];
|
1993-03-21 21:04:42 +03:00
|
|
|
}
|
|
|
|
|
1996-04-03 04:25:21 +04:00
|
|
|
int
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|
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chopen(dev, flags, fmt, p)
|
1994-03-29 08:29:20 +04:00
|
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|
dev_t dev;
|
1996-04-03 04:25:21 +04:00
|
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int flags, fmt;
|
1996-02-15 00:46:52 +03:00
|
|
|
struct proc *p;
|
1993-03-21 21:04:42 +03:00
|
|
|
{
|
1996-04-03 04:25:21 +04:00
|
|
|
struct ch_softc *sc;
|
|
|
|
int unit, error = 0;
|
1994-03-29 08:29:20 +04:00
|
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|
|
|
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unit = CHUNIT(dev);
|
1996-04-03 04:25:21 +04:00
|
|
|
if ((unit >= ch_cd.cd_ndevs) ||
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|
|
((sc = ch_cd.cd_devs[unit]) == NULL))
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|
return (ENXIO);
|
1994-11-21 14:28:47 +03:00
|
|
|
|
|
|
|
/*
|
1996-04-03 04:25:21 +04:00
|
|
|
* Only allow one open at a time.
|
1994-11-21 14:28:47 +03:00
|
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|
*/
|
1996-04-03 04:25:21 +04:00
|
|
|
if (sc->sc_link->flags & SDEV_OPEN)
|
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|
|
return (EBUSY);
|
|
|
|
|
|
|
|
sc->sc_link->flags |= SDEV_OPEN;
|
1994-03-29 08:29:20 +04:00
|
|
|
|
|
|
|
/*
|
1996-04-03 04:25:21 +04:00
|
|
|
* Absorb any unit attention errors. Ignore "not ready"
|
|
|
|
* since this might occur if e.g. a tape isn't actually
|
|
|
|
* loaded in the drive.
|
1994-03-29 08:29:20 +04:00
|
|
|
*/
|
1996-04-19 04:02:29 +04:00
|
|
|
error = scsi_test_unit_ready(sc->sc_link,
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|
|
SCSI_IGNORE_NOT_READY|SCSI_IGNORE_MEDIA_CHANGE);
|
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|
|
if (error)
|
1994-11-21 14:28:47 +03:00
|
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|
goto bad;
|
1994-12-28 22:42:47 +03:00
|
|
|
|
1994-03-29 08:29:20 +04:00
|
|
|
/*
|
1996-04-03 04:25:21 +04:00
|
|
|
* Make sure our parameters are up to date.
|
1994-03-29 08:29:20 +04:00
|
|
|
*/
|
1996-04-19 04:02:29 +04:00
|
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|
if ((error = ch_get_params(sc, 0)) != 0)
|
1994-11-21 14:28:47 +03:00
|
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|
goto bad;
|
1993-03-21 21:04:42 +03:00
|
|
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|
1996-04-03 04:25:21 +04:00
|
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|
return (0);
|
1994-11-21 14:28:47 +03:00
|
|
|
|
1996-04-03 04:25:21 +04:00
|
|
|
bad:
|
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|
|
sc->sc_link->flags &= ~SDEV_OPEN;
|
|
|
|
return (error);
|
1993-03-21 21:04:42 +03:00
|
|
|
}
|
|
|
|
|
1996-04-03 04:25:21 +04:00
|
|
|
int
|
|
|
|
chclose(dev, flags, fmt, p)
|
1994-03-29 08:29:20 +04:00
|
|
|
dev_t dev;
|
1996-04-03 04:25:21 +04:00
|
|
|
int flags, fmt;
|
1996-02-15 00:46:52 +03:00
|
|
|
struct proc *p;
|
1993-03-21 21:04:42 +03:00
|
|
|
{
|
1996-04-03 04:25:21 +04:00
|
|
|
struct ch_softc *sc = ch_cd.cd_devs[CHUNIT(dev)];
|
1994-03-29 08:29:20 +04:00
|
|
|
|
1996-04-03 04:25:21 +04:00
|
|
|
sc->sc_link->flags &= ~SDEV_OPEN;
|
|
|
|
return (0);
|
1993-03-21 21:04:42 +03:00
|
|
|
}
|
|
|
|
|
1996-04-03 04:25:21 +04:00
|
|
|
int
|
|
|
|
chioctl(dev, cmd, data, flags, p)
|
1994-03-29 08:29:20 +04:00
|
|
|
dev_t dev;
|
1994-10-31 00:43:03 +03:00
|
|
|
u_long cmd;
|
1996-04-03 04:25:21 +04:00
|
|
|
caddr_t data;
|
|
|
|
int flags;
|
1994-12-28 22:42:47 +03:00
|
|
|
struct proc *p;
|
1993-03-21 21:04:42 +03:00
|
|
|
{
|
1996-04-03 04:25:21 +04:00
|
|
|
struct ch_softc *sc = ch_cd.cd_devs[CHUNIT(dev)];
|
|
|
|
int error = 0;
|
1994-03-29 08:29:20 +04:00
|
|
|
|
1996-09-18 06:34:31 +04:00
|
|
|
/*
|
|
|
|
* If this command can change the device's state, we must
|
|
|
|
* have the device open for writing.
|
|
|
|
*/
|
|
|
|
switch (cmd) {
|
|
|
|
case CHIOGPICKER:
|
|
|
|
case CHIOGPARAMS:
|
|
|
|
case CHIOGSTATUS:
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
if ((flags & FWRITE) == 0)
|
|
|
|
return (EBADF);
|
|
|
|
}
|
|
|
|
|
1994-03-29 08:29:20 +04:00
|
|
|
switch (cmd) {
|
1996-04-03 04:25:21 +04:00
|
|
|
case CHIOMOVE:
|
|
|
|
error = ch_move(sc, (struct changer_move *)data);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case CHIOEXCHANGE:
|
|
|
|
error = ch_exchange(sc, (struct changer_exchange *)data);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case CHIOPOSITION:
|
|
|
|
error = ch_position(sc, (struct changer_position *)data);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case CHIOGPICKER:
|
|
|
|
*(int *)data = sc->sc_picker - sc->sc_firsts[CHET_MT];
|
|
|
|
break;
|
|
|
|
|
|
|
|
case CHIOSPICKER: {
|
|
|
|
int new_picker = *(int *)data;
|
|
|
|
|
|
|
|
if (new_picker > (sc->sc_counts[CHET_MT] - 1))
|
|
|
|
return (EINVAL);
|
|
|
|
sc->sc_picker = sc->sc_firsts[CHET_MT] + new_picker;
|
|
|
|
break; }
|
|
|
|
|
|
|
|
case CHIOGPARAMS: {
|
|
|
|
struct changer_params *cp = (struct changer_params *)data;
|
|
|
|
|
|
|
|
cp->cp_curpicker = sc->sc_picker - sc->sc_firsts[CHET_MT];
|
|
|
|
cp->cp_npickers = sc->sc_counts[CHET_MT];
|
|
|
|
cp->cp_nslots = sc->sc_counts[CHET_ST];
|
|
|
|
cp->cp_nportals = sc->sc_counts[CHET_IE];
|
|
|
|
cp->cp_ndrives = sc->sc_counts[CHET_DT];
|
|
|
|
break; }
|
|
|
|
|
|
|
|
case CHIOGSTATUS: {
|
|
|
|
struct changer_element_status *ces =
|
|
|
|
(struct changer_element_status *)data;
|
|
|
|
|
|
|
|
error = ch_usergetelemstatus(sc, ces->ces_type, ces->ces_data);
|
|
|
|
break; }
|
|
|
|
|
|
|
|
/* Implement prevent/allow? */
|
|
|
|
|
1993-03-21 21:04:42 +03:00
|
|
|
default:
|
1996-04-03 04:25:21 +04:00
|
|
|
error = scsi_do_ioctl(sc->sc_link, dev, cmd, data, flags, p);
|
|
|
|
break;
|
1993-03-21 21:04:42 +03:00
|
|
|
}
|
1996-04-03 04:25:21 +04:00
|
|
|
|
|
|
|
return (error);
|
1993-03-21 21:04:42 +03:00
|
|
|
}
|
|
|
|
|
1996-04-03 04:25:21 +04:00
|
|
|
int
|
|
|
|
ch_move(sc, cm)
|
|
|
|
struct ch_softc *sc;
|
|
|
|
struct changer_move *cm;
|
1993-03-21 21:04:42 +03:00
|
|
|
{
|
1996-04-03 04:25:21 +04:00
|
|
|
struct scsi_move_medium cmd;
|
|
|
|
u_int16_t fromelem, toelem;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check arguments.
|
|
|
|
*/
|
|
|
|
if ((cm->cm_fromtype > CHET_DT) || (cm->cm_totype > CHET_DT))
|
|
|
|
return (EINVAL);
|
|
|
|
if ((cm->cm_fromunit > (sc->sc_counts[cm->cm_fromtype] - 1)) ||
|
|
|
|
(cm->cm_tounit > (sc->sc_counts[cm->cm_totype] - 1)))
|
|
|
|
return (ENODEV);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check the request against the changer's capabilities.
|
|
|
|
*/
|
|
|
|
if ((sc->sc_movemask[cm->cm_fromtype] & (1 << cm->cm_totype)) == 0)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Calculate the source and destination elements.
|
|
|
|
*/
|
|
|
|
fromelem = sc->sc_firsts[cm->cm_fromtype] + cm->cm_fromunit;
|
|
|
|
toelem = sc->sc_firsts[cm->cm_totype] + cm->cm_tounit;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Build the SCSI command.
|
|
|
|
*/
|
|
|
|
bzero(&cmd, sizeof(cmd));
|
|
|
|
cmd.opcode = MOVE_MEDIUM;
|
|
|
|
_lto2b(sc->sc_picker, cmd.tea);
|
|
|
|
_lto2b(fromelem, cmd.src);
|
|
|
|
_lto2b(toelem, cmd.dst);
|
|
|
|
if (cm->cm_flags & CM_INVERT)
|
|
|
|
cmd.flags |= MOVE_MEDIUM_INVERT;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Send command to changer.
|
|
|
|
*/
|
|
|
|
return (scsi_scsi_cmd(sc->sc_link, (struct scsi_generic *)&cmd,
|
|
|
|
sizeof(cmd), NULL, 0, CHRETRIES, 100000, NULL, 0));
|
1993-03-21 21:04:42 +03:00
|
|
|
}
|
|
|
|
|
1996-04-03 04:25:21 +04:00
|
|
|
int
|
|
|
|
ch_exchange(sc, ce)
|
|
|
|
struct ch_softc *sc;
|
|
|
|
struct changer_exchange *ce;
|
1993-03-21 21:04:42 +03:00
|
|
|
{
|
1996-04-03 04:25:21 +04:00
|
|
|
struct scsi_exchange_medium cmd;
|
|
|
|
u_int16_t src, dst1, dst2;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check arguments.
|
|
|
|
*/
|
|
|
|
if ((ce->ce_srctype > CHET_DT) || (ce->ce_fdsttype > CHET_DT) ||
|
|
|
|
(ce->ce_sdsttype > CHET_DT))
|
|
|
|
return (EINVAL);
|
|
|
|
if ((ce->ce_srcunit > (sc->sc_counts[ce->ce_srctype] - 1)) ||
|
|
|
|
(ce->ce_fdstunit > (sc->sc_counts[ce->ce_fdsttype] - 1)) ||
|
|
|
|
(ce->ce_sdstunit > (sc->sc_counts[ce->ce_sdsttype] - 1)))
|
|
|
|
return (ENODEV);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check the request against the changer's capabilities.
|
|
|
|
*/
|
|
|
|
if (((sc->sc_exchangemask[ce->ce_srctype] &
|
|
|
|
(1 << ce->ce_fdsttype)) == 0) ||
|
|
|
|
((sc->sc_exchangemask[ce->ce_fdsttype] &
|
|
|
|
(1 << ce->ce_sdsttype)) == 0))
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Calculate the source and destination elements.
|
|
|
|
*/
|
|
|
|
src = sc->sc_firsts[ce->ce_srctype] + ce->ce_srcunit;
|
|
|
|
dst1 = sc->sc_firsts[ce->ce_fdsttype] + ce->ce_fdstunit;
|
|
|
|
dst2 = sc->sc_firsts[ce->ce_sdsttype] + ce->ce_sdstunit;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Build the SCSI command.
|
|
|
|
*/
|
|
|
|
bzero(&cmd, sizeof(cmd));
|
|
|
|
cmd.opcode = EXCHANGE_MEDIUM;
|
|
|
|
_lto2b(sc->sc_picker, cmd.tea);
|
|
|
|
_lto2b(src, cmd.src);
|
|
|
|
_lto2b(dst1, cmd.fdst);
|
|
|
|
_lto2b(dst2, cmd.sdst);
|
|
|
|
if (ce->ce_flags & CE_INVERT1)
|
|
|
|
cmd.flags |= EXCHANGE_MEDIUM_INV1;
|
|
|
|
if (ce->ce_flags & CE_INVERT2)
|
|
|
|
cmd.flags |= EXCHANGE_MEDIUM_INV2;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Send command to changer.
|
|
|
|
*/
|
|
|
|
return (scsi_scsi_cmd(sc->sc_link, (struct scsi_generic *)&cmd,
|
|
|
|
sizeof(cmd), NULL, 0, CHRETRIES, 100000, NULL, 0));
|
1993-03-21 21:04:42 +03:00
|
|
|
}
|
|
|
|
|
1996-04-03 04:25:21 +04:00
|
|
|
int
|
|
|
|
ch_position(sc, cp)
|
|
|
|
struct ch_softc *sc;
|
|
|
|
struct changer_position *cp;
|
1993-03-21 21:04:42 +03:00
|
|
|
{
|
1996-04-03 04:25:21 +04:00
|
|
|
struct scsi_position_to_element cmd;
|
|
|
|
u_int16_t dst;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check arguments.
|
|
|
|
*/
|
|
|
|
if (cp->cp_type > CHET_DT)
|
|
|
|
return (EINVAL);
|
|
|
|
if (cp->cp_unit > (sc->sc_counts[cp->cp_type] - 1))
|
|
|
|
return (ENODEV);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Calculate the destination element.
|
|
|
|
*/
|
|
|
|
dst = sc->sc_firsts[cp->cp_type] + cp->cp_unit;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Build the SCSI command.
|
|
|
|
*/
|
|
|
|
bzero(&cmd, sizeof(cmd));
|
|
|
|
cmd.opcode = POSITION_TO_ELEMENT;
|
|
|
|
_lto2b(sc->sc_picker, cmd.tea);
|
|
|
|
_lto2b(dst, cmd.dst);
|
|
|
|
if (cp->cp_flags & CP_INVERT)
|
|
|
|
cmd.flags |= POSITION_TO_ELEMENT_INVERT;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Send command to changer.
|
|
|
|
*/
|
|
|
|
return (scsi_scsi_cmd(sc->sc_link, (struct scsi_generic *)&cmd,
|
|
|
|
sizeof(cmd), NULL, 0, CHRETRIES, 100000, NULL, 0));
|
1993-03-21 21:04:42 +03:00
|
|
|
}
|
|
|
|
|
1994-03-29 08:29:20 +04:00
|
|
|
/*
|
1996-04-03 04:25:21 +04:00
|
|
|
* Perform a READ ELEMENT STATUS on behalf of the user, and return to
|
|
|
|
* the user only the data the user is interested in (i.e. an array of
|
|
|
|
* flags bytes).
|
1994-03-29 08:29:20 +04:00
|
|
|
*/
|
1996-04-03 04:25:21 +04:00
|
|
|
int
|
|
|
|
ch_usergetelemstatus(sc, chet, uptr)
|
|
|
|
struct ch_softc *sc;
|
|
|
|
int chet;
|
|
|
|
u_int8_t *uptr;
|
|
|
|
{
|
|
|
|
struct read_element_status_header *st_hdr;
|
|
|
|
struct read_element_status_page_header *pg_hdr;
|
|
|
|
struct read_element_status_descriptor *desc;
|
|
|
|
caddr_t data = NULL;
|
|
|
|
size_t size, desclen;
|
|
|
|
int avail, i, error = 0;
|
|
|
|
u_int8_t *user_data = NULL;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If there are no elements of the requested type in the changer,
|
|
|
|
* the request is invalid.
|
|
|
|
*/
|
|
|
|
if (sc->sc_counts[chet] == 0)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Request one descriptor for the given element type. This
|
|
|
|
* is used to determine the size of the descriptor so that
|
|
|
|
* we can allocate enough storage for all of them. We assume
|
|
|
|
* that the first one can fit into 1k.
|
|
|
|
*/
|
|
|
|
data = (caddr_t)malloc(1024, M_DEVBUF, M_WAITOK);
|
1996-04-19 04:02:29 +04:00
|
|
|
error = ch_getelemstatus(sc, sc->sc_firsts[chet], 1, data, 1024);
|
|
|
|
if (error)
|
1996-04-03 04:25:21 +04:00
|
|
|
goto done;
|
|
|
|
|
|
|
|
st_hdr = (struct read_element_status_header *)data;
|
|
|
|
pg_hdr = (struct read_element_status_page_header *)((u_long)st_hdr +
|
|
|
|
sizeof(struct read_element_status_header));
|
|
|
|
desclen = _2btol(pg_hdr->edl);
|
|
|
|
|
|
|
|
size = sizeof(struct read_element_status_header) +
|
|
|
|
sizeof(struct read_element_status_page_header) +
|
|
|
|
(desclen * sc->sc_counts[chet]);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Reallocate storage for descriptors and get them from the
|
|
|
|
* device.
|
|
|
|
*/
|
|
|
|
free(data, M_DEVBUF);
|
|
|
|
data = (caddr_t)malloc(size, M_DEVBUF, M_WAITOK);
|
1996-04-19 04:02:29 +04:00
|
|
|
error = ch_getelemstatus(sc, sc->sc_firsts[chet],
|
|
|
|
sc->sc_counts[chet], data, size);
|
|
|
|
if (error)
|
1996-04-03 04:25:21 +04:00
|
|
|
goto done;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Fill in the user status array.
|
|
|
|
*/
|
|
|
|
st_hdr = (struct read_element_status_header *)data;
|
|
|
|
avail = _2btol(st_hdr->count);
|
|
|
|
if (avail != sc->sc_counts[chet])
|
|
|
|
printf("%s: warning, READ ELEMENT STATUS avail != count\n",
|
|
|
|
sc->sc_dev.dv_xname);
|
|
|
|
|
|
|
|
user_data = (u_int8_t *)malloc(avail, M_DEVBUF, M_WAITOK);
|
|
|
|
|
|
|
|
desc = (struct read_element_status_descriptor *)((u_long)data +
|
|
|
|
sizeof(struct read_element_status_header) +
|
|
|
|
sizeof(struct read_element_status_page_header));
|
|
|
|
for (i = 0; i < avail; ++i) {
|
|
|
|
user_data[i] = desc->flags1;
|
|
|
|
(u_long)desc += desclen;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Copy flags array out to userspace. */
|
|
|
|
error = copyout(user_data, uptr, avail);
|
|
|
|
|
|
|
|
done:
|
|
|
|
if (data != NULL)
|
|
|
|
free(data, M_DEVBUF);
|
|
|
|
if (user_data != NULL)
|
|
|
|
free(user_data, M_DEVBUF);
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
ch_getelemstatus(sc, first, count, data, datalen)
|
|
|
|
struct ch_softc *sc;
|
|
|
|
int first, count;
|
|
|
|
caddr_t data;
|
|
|
|
size_t datalen;
|
1993-03-21 21:04:42 +03:00
|
|
|
{
|
1996-04-03 04:25:21 +04:00
|
|
|
struct scsi_read_element_status cmd;
|
1994-03-29 08:29:20 +04:00
|
|
|
|
|
|
|
/*
|
1996-04-03 04:25:21 +04:00
|
|
|
* Build SCSI command.
|
1994-03-29 08:29:20 +04:00
|
|
|
*/
|
1996-04-03 04:25:21 +04:00
|
|
|
bzero(&cmd, sizeof(cmd));
|
|
|
|
cmd.opcode = READ_ELEMENT_STATUS;
|
|
|
|
_lto2b(first, cmd.sea);
|
|
|
|
_lto2b(count, cmd.count);
|
|
|
|
_lto3b(datalen, cmd.len);
|
1994-03-29 08:29:20 +04:00
|
|
|
|
|
|
|
/*
|
1996-04-03 04:25:21 +04:00
|
|
|
* Send command to changer.
|
1994-03-29 08:29:20 +04:00
|
|
|
*/
|
1996-04-03 04:25:21 +04:00
|
|
|
return (scsi_scsi_cmd(sc->sc_link, (struct scsi_generic *)&cmd,
|
|
|
|
sizeof(cmd), (u_char *)data, datalen, CHRETRIES, 100000, NULL, 0));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Ask the device about itself and fill in the parameters in our
|
|
|
|
* softc.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
ch_get_params(sc, scsiflags)
|
|
|
|
struct ch_softc *sc;
|
|
|
|
int scsiflags;
|
|
|
|
{
|
|
|
|
struct scsi_mode_sense cmd;
|
|
|
|
struct scsi_mode_sense_data {
|
|
|
|
struct scsi_mode_header header;
|
|
|
|
union {
|
|
|
|
struct page_element_address_assignment ea;
|
|
|
|
struct page_transport_geometry_parameters tg;
|
|
|
|
struct page_device_capabilities cap;
|
|
|
|
} pages;
|
|
|
|
} sense_data;
|
|
|
|
int error, from;
|
|
|
|
u_int8_t *moves, *exchanges;
|
1994-03-29 08:29:20 +04:00
|
|
|
|
|
|
|
/*
|
1996-04-03 04:25:21 +04:00
|
|
|
* Grab info from the element address assignment page.
|
1994-03-29 08:29:20 +04:00
|
|
|
*/
|
1996-04-03 04:25:21 +04:00
|
|
|
bzero(&cmd, sizeof(cmd));
|
|
|
|
bzero(&sense_data, sizeof(sense_data));
|
|
|
|
cmd.opcode = MODE_SENSE;
|
|
|
|
cmd.byte2 |= 0x08; /* disable block descriptors */
|
|
|
|
cmd.page = 0x1d;
|
|
|
|
cmd.length = (sizeof(sense_data) & 0xff);
|
|
|
|
error = scsi_scsi_cmd(sc->sc_link, (struct scsi_generic *)&cmd,
|
|
|
|
sizeof(cmd), (u_char *)&sense_data, sizeof(sense_data), CHRETRIES,
|
|
|
|
6000, NULL, scsiflags | SCSI_DATA_IN);
|
1996-02-15 00:46:52 +03:00
|
|
|
if (error) {
|
1996-04-19 04:02:29 +04:00
|
|
|
printf("%s: could not sense element address page\n",
|
|
|
|
sc->sc_dev.dv_xname);
|
1996-04-03 04:25:21 +04:00
|
|
|
return (error);
|
1993-03-21 21:04:42 +03:00
|
|
|
}
|
1994-03-29 08:29:20 +04:00
|
|
|
|
1996-04-03 04:25:21 +04:00
|
|
|
sc->sc_firsts[CHET_MT] = _2btol(sense_data.pages.ea.mtea);
|
|
|
|
sc->sc_counts[CHET_MT] = _2btol(sense_data.pages.ea.nmte);
|
|
|
|
sc->sc_firsts[CHET_ST] = _2btol(sense_data.pages.ea.fsea);
|
|
|
|
sc->sc_counts[CHET_ST] = _2btol(sense_data.pages.ea.nse);
|
|
|
|
sc->sc_firsts[CHET_IE] = _2btol(sense_data.pages.ea.fieea);
|
|
|
|
sc->sc_counts[CHET_IE] = _2btol(sense_data.pages.ea.niee);
|
|
|
|
sc->sc_firsts[CHET_DT] = _2btol(sense_data.pages.ea.fdtea);
|
|
|
|
sc->sc_counts[CHET_DT] = _2btol(sense_data.pages.ea.ndte);
|
|
|
|
|
|
|
|
/* XXX ask for page trasport geom */
|
1994-03-29 08:29:20 +04:00
|
|
|
|
|
|
|
/*
|
1996-04-03 04:25:21 +04:00
|
|
|
* Grab info from the capabilities page.
|
1994-03-29 08:29:20 +04:00
|
|
|
*/
|
1996-04-03 04:25:21 +04:00
|
|
|
bzero(&cmd, sizeof(cmd));
|
|
|
|
bzero(&sense_data, sizeof(sense_data));
|
|
|
|
cmd.opcode = MODE_SENSE;
|
|
|
|
cmd.byte2 |= 0x08; /* disable block descriptors */
|
|
|
|
cmd.page = 0x1f;
|
|
|
|
cmd.length = (sizeof(sense_data) & 0xff);
|
|
|
|
error = scsi_scsi_cmd(sc->sc_link, (struct scsi_generic *)&cmd,
|
|
|
|
sizeof(cmd), (u_char *)&sense_data, sizeof(sense_data), CHRETRIES,
|
|
|
|
6000, NULL, scsiflags | SCSI_DATA_IN);
|
|
|
|
if (error) {
|
1996-04-19 04:02:29 +04:00
|
|
|
printf("%s: could not sense capabilities page\n",
|
|
|
|
sc->sc_dev.dv_xname);
|
1996-04-03 04:25:21 +04:00
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
|
|
|
bzero(sc->sc_movemask, sizeof(sc->sc_movemask));
|
|
|
|
bzero(sc->sc_exchangemask, sizeof(sc->sc_exchangemask));
|
|
|
|
moves = &sense_data.pages.cap.move_from_mt;
|
|
|
|
exchanges = &sense_data.pages.cap.exchange_with_mt;
|
|
|
|
for (from = CHET_MT; from <= CHET_DT; ++from) {
|
|
|
|
sc->sc_movemask[from] = moves[from];
|
|
|
|
sc->sc_exchangemask[from] = exchanges[from];
|
1993-03-21 21:04:42 +03:00
|
|
|
}
|
1996-04-03 04:25:21 +04:00
|
|
|
|
|
|
|
sc->sc_link->flags |= SDEV_MEDIA_LOADED;
|
|
|
|
return (0);
|
1993-03-21 21:04:42 +03:00
|
|
|
}
|