196 lines
6.2 KiB
C
196 lines
6.2 KiB
C
/* $NetBSD: st_atapi.c,v 1.2 2001/06/18 09:05:05 bouyer Exp $ */
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/*-
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* Copyright (c) 1998 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 Charles M. Hannum.
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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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* Originally written by Julian Elischer (julian@tfs.com)
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* for TRW Financial Systems for use under the MACH(2.5) operating system.
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*
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* TRW Financial Systems, in accordance with their agreement with Carnegie
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* Mellon University, makes this software available to CMU to distribute
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* or use in any manner that they see fit as long as this message is kept with
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* the software. For this reason TFS also grants any other persons or
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* organisations permission to use or modify this software.
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*
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* TFS supplies this software to be publicly redistributed
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* on the understanding that TFS is not responsible for the correct
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* functioning of this software in any circumstances.
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*
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* Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
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* major changes by Julian Elischer (julian@jules.dialix.oz.au) May 1993
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*
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* A lot of rewhacking done by mjacob (mjacob@nas.nasa.gov).
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*/
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#include "opt_scsi.h"
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#include "rnd.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/buf.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <dev/scsipi/stvar.h>
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#include <dev/scsipi/atapi_tape.h>
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int st_atapibus_match __P((struct device *, struct cfdata *, void *));
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void st_atapibus_attach __P((struct device *, struct device *, void *));
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int st_atapibus_ops __P((struct st_softc *, int, int));
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int st_atapibus_mode_sense __P((struct st_softc *, int));
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int st_atapibus_mode_select __P((struct st_softc *, int));
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int st_atapibus_do_ms __P((struct st_softc *, int, void *, int, int));
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struct cfattach st_atapibus_ca = {
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sizeof(struct st_softc), st_atapibus_match, st_atapibus_attach
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};
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const struct scsipi_inquiry_pattern st_atapibus_patterns[] = {
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{T_SEQUENTIAL, T_REMOV,
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"", "", ""},
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};
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int
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st_atapibus_match(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 scsipibus_attach_args *sa = aux;
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int priority;
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if (scsipi_periph_bustype(sa->sa_periph) != SCSIPI_BUSTYPE_ATAPI)
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return (0);
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(void)scsipi_inqmatch(&sa->sa_inqbuf,
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(caddr_t)st_atapibus_patterns,
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sizeof(st_atapibus_patterns)/sizeof(st_atapibus_patterns[0]),
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sizeof(st_atapibus_patterns[0]), &priority);
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return (priority);
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}
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void
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st_atapibus_attach(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 st_softc *st = (void *)self;
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st->ops = st_atapibus_ops;
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stattach(parent, st, aux);
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}
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int
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st_atapibus_ops(st, op, flags)
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struct st_softc *st;
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int op;
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int flags;
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{
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switch(op) {
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case ST_OPS_RBL:
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/* done in mode_sense */
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return 0;
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case ST_OPS_MODESENSE:
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return st_atapibus_mode_sense(st, flags);
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case ST_OPS_MODESELECT:
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return st_atapibus_mode_select(st, flags);
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case ST_OPS_CMPRSS_ON:
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case ST_OPS_CMPRSS_OFF:
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return ENODEV;
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default:
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panic("st_scsibus_ops: invalid op");
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/* NOTREACHED */
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}
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}
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int
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st_atapibus_mode_sense(st, flags)
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struct st_softc *st;
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int flags;
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{
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int count, error;
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struct atapi_cappage cappage;
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struct scsipi_periph *periph = st->sc_periph;
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/* get drive capabilities, some drives needs this repeated */
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for (count = 0 ; count < 5 ; count++) {
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error = scsipi_mode_sense(periph, SMS_DBD,
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ATAPI_TAPE_CAP_PAGE, &cappage.header, sizeof(cappage),
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flags | XS_CTL_DATA_ONSTACK, ST_RETRIES, ST_CTL_TIME);
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if (error == 0) {
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st->numblks = 0; /* unused anyway */
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if (cappage.cap4 & ATAPI_TAPE_CAP_PAGE_BLK32K)
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st->media_blksize = 32768;
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else if (cappage.cap4 & ATAPI_TAPE_CAP_PAGE_BLK1K)
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st->media_blksize = 1024;
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else if (cappage.cap4 & ATAPI_TAPE_CAP_PAGE_BLK512)
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st->media_blksize = 512;
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else {
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error = ENODEV;
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continue;
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}
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st->blkmin = st->blkmax = st->media_blksize;
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st->media_density = 0;
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if (cappage.header.dev_spec & SMH_DSP_WRITE_PROT)
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st->flags |= ST_READONLY;
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else
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st->flags &= ~ST_READONLY;
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SC_DEBUG(periph, SCSIPI_DB3,
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("density code %d, %d-byte blocks, write-%s, ",
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st->media_density, st->media_blksize,
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st->flags & ST_READONLY ? "protected" : "enabled"));
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SC_DEBUG(periph, SCSIPI_DB3,
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("%sbuffered\n",
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cappage.header.dev_spec & SMH_DSP_BUFF_MODE ?
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"" : "un"));
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periph->periph_flags |= PERIPH_MEDIA_LOADED;
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return 0;
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}
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}
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return error;
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}
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int
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st_atapibus_mode_select(st, flags)
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struct st_softc *st;
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int flags;
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{
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return ENODEV; /* for now ... */
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}
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