NetBSD/sys/dev/scsipi/st_atapi.c

173 lines
5.2 KiB
C

/* $NetBSD: st_atapi.c,v 1.3 2001/06/18 09:41:06 bouyer Exp $ */
/*
* Copyright (c) 2001 Manuel Bouyer.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "opt_scsi.h"
#include "rnd.h"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/device.h>
#include <sys/buf.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <dev/scsipi/stvar.h>
#include <dev/scsipi/atapi_tape.h>
int st_atapibus_match __P((struct device *, struct cfdata *, void *));
void st_atapibus_attach __P((struct device *, struct device *, void *));
int st_atapibus_ops __P((struct st_softc *, int, int));
int st_atapibus_mode_sense __P((struct st_softc *, int));
int st_atapibus_mode_select __P((struct st_softc *, int));
int st_atapibus_do_ms __P((struct st_softc *, int, void *, int, int));
struct cfattach st_atapibus_ca = {
sizeof(struct st_softc), st_atapibus_match, st_atapibus_attach
};
const struct scsipi_inquiry_pattern st_atapibus_patterns[] = {
{T_SEQUENTIAL, T_REMOV,
"", "", ""},
};
int
st_atapibus_match(parent, match, aux)
struct device *parent;
struct cfdata *match;
void *aux;
{
struct scsipibus_attach_args *sa = aux;
int priority;
if (scsipi_periph_bustype(sa->sa_periph) != SCSIPI_BUSTYPE_ATAPI)
return (0);
(void)scsipi_inqmatch(&sa->sa_inqbuf,
(caddr_t)st_atapibus_patterns,
sizeof(st_atapibus_patterns)/sizeof(st_atapibus_patterns[0]),
sizeof(st_atapibus_patterns[0]), &priority);
return (priority);
}
void
st_atapibus_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct st_softc *st = (void *)self;
st->ops = st_atapibus_ops;
stattach(parent, st, aux);
}
int
st_atapibus_ops(st, op, flags)
struct st_softc *st;
int op;
int flags;
{
switch(op) {
case ST_OPS_RBL:
/* done in mode_sense */
return 0;
case ST_OPS_MODESENSE:
return st_atapibus_mode_sense(st, flags);
case ST_OPS_MODESELECT:
return st_atapibus_mode_select(st, flags);
case ST_OPS_CMPRSS_ON:
case ST_OPS_CMPRSS_OFF:
return ENODEV;
default:
panic("st_scsibus_ops: invalid op");
/* NOTREACHED */
}
}
int
st_atapibus_mode_sense(st, flags)
struct st_softc *st;
int flags;
{
int count, error;
struct atapi_cappage cappage;
struct scsipi_periph *periph = st->sc_periph;
/* get drive capabilities, some drives needs this repeated */
for (count = 0 ; count < 5 ; count++) {
error = scsipi_mode_sense(periph, SMS_DBD,
ATAPI_TAPE_CAP_PAGE, &cappage.header, sizeof(cappage),
flags | XS_CTL_DATA_ONSTACK, ST_RETRIES, ST_CTL_TIME);
if (error == 0) {
st->numblks = 0; /* unused anyway */
if (cappage.cap4 & ATAPI_TAPE_CAP_PAGE_BLK32K)
st->media_blksize = 32768;
else if (cappage.cap4 & ATAPI_TAPE_CAP_PAGE_BLK1K)
st->media_blksize = 1024;
else if (cappage.cap4 & ATAPI_TAPE_CAP_PAGE_BLK512)
st->media_blksize = 512;
else {
error = ENODEV;
continue;
}
st->blkmin = st->blkmax = st->media_blksize;
st->media_density = 0;
if (cappage.header.dev_spec & SMH_DSP_WRITE_PROT)
st->flags |= ST_READONLY;
else
st->flags &= ~ST_READONLY;
SC_DEBUG(periph, SCSIPI_DB3,
("density code %d, %d-byte blocks, write-%s, ",
st->media_density, st->media_blksize,
st->flags & ST_READONLY ? "protected" : "enabled"));
SC_DEBUG(periph, SCSIPI_DB3,
("%sbuffered\n",
cappage.header.dev_spec & SMH_DSP_BUFF_MODE ?
"" : "un"));
periph->periph_flags |= PERIPH_MEDIA_LOADED;
return 0;
}
}
return error;
}
int
st_atapibus_mode_select(st, flags)
struct st_softc *st;
int flags;
{
return ENODEV; /* for now ... */
}