NetBSD/sys/dev/scsipi/sd_scsi.c

372 lines
12 KiB
C

/* $NetBSD: sd_scsi.c,v 1.17 2001/05/14 20:35:29 bouyer Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/
/*
* Originally written by Julian Elischer (julian@dialix.oz.au)
* for TRW Financial Systems for use under the MACH(2.5) operating system.
*
* TRW Financial Systems, in accordance with their agreement with Carnegie
* Mellon University, makes this software available to CMU to distribute
* or use in any manner that they see fit as long as this message is kept with
* the software. For this reason TFS also grants any other persons or
* organisations permission to use or modify this software.
*
* TFS supplies this software to be publicly redistributed
* on the understanding that TFS is not responsible for the correct
* functioning of this software in any circumstances.
*
* Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/buf.h>
#include <sys/malloc.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/disk.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_disk.h>
#include <dev/scsipi/scsi_disk.h>
#include <dev/scsipi/scsiconf.h>
#include <dev/scsipi/sdvar.h>
int sd_scsibus_match __P((struct device *, struct cfdata *, void *));
void sd_scsibus_attach __P((struct device *, struct device *, void *));
struct cfattach sd_scsibus_ca = {
sizeof(struct sd_softc), sd_scsibus_match, sd_scsibus_attach,
sddetach, sdactivate,
};
struct scsipi_inquiry_pattern sd_scsibus_patterns[] = {
{T_DIRECT, T_FIXED,
"", "", ""},
{T_DIRECT, T_REMOV,
"", "", ""},
{T_OPTICAL, T_FIXED,
"", "", ""},
{T_OPTICAL, T_REMOV,
"", "", ""},
};
struct sd_scsibus_mode_sense_data {
struct scsipi_mode_header header;
struct scsi_blk_desc blk_desc;
union scsi_disk_pages pages;
};
static int sd_scsibus_mode_sense __P((struct sd_softc *,
struct sd_scsibus_mode_sense_data *, int, int));
static int sd_scsibus_get_parms __P((struct sd_softc *,
struct disk_parms *, int));
static int sd_scsibus_get_optparms __P((struct sd_softc *,
struct disk_parms *, int));
static int sd_scsibus_flush __P((struct sd_softc *, int));
const struct sd_ops sd_scsibus_ops = {
sd_scsibus_get_parms,
sd_scsibus_flush,
};
int
sd_scsibus_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_SCSI)
return (0);
(void)scsipi_inqmatch(&sa->sa_inqbuf,
(caddr_t)sd_scsibus_patterns,
sizeof(sd_scsibus_patterns) / sizeof(sd_scsibus_patterns[0]),
sizeof(sd_scsibus_patterns[0]), &priority);
return (priority);
}
/*
* The routine called by the low level scsi routine when it discovers
* a device suitable for this driver.
*/
void
sd_scsibus_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct sd_softc *sd = (void *)self;
struct scsipibus_attach_args *sa = aux;
struct scsipi_periph *periph = sa->sa_periph;
SC_DEBUG(periph, SCSIPI_DB2, ("sd_scsibus_attach: "));
sd->type = (sa->sa_inqbuf.type & SID_TYPE);
scsipi_strvis(sd->name, 16, sa->sa_inqbuf.product, 16);
/*
* Note if this device is ancient. This is used in sdminphys().
*/
if (periph->periph_version == 0)
sd->flags |= SDF_ANCIENT;
sdattach(parent, sd, periph, &sd_scsibus_ops);
}
static int
sd_scsibus_mode_sense(sd, scsipi_sense, page, flags)
struct sd_softc *sd;
struct sd_scsibus_mode_sense_data *scsipi_sense;
int page, flags;
{
/*
* Make sure the sense buffer is clean before we do
* the mode sense, so that checks for bogus values of
* 0 will work in case the mode sense fails.
*/
bzero(scsipi_sense, sizeof(*scsipi_sense));
if (sd->sc_periph->periph_quirks & PQUIRK_ONLYBIG) {
return scsipi_mode_sense_big(sd->sc_periph, 0, page,
(struct scsipi_mode_header_big*)&scsipi_sense->header,
sizeof(*scsipi_sense),
flags | XS_CTL_SILENT | XS_CTL_DATA_ONSTACK,
SDRETRIES, 6000);
} else {
return scsipi_mode_sense(sd->sc_periph, 0, page,
&scsipi_sense->header, sizeof(*scsipi_sense),
flags | XS_CTL_SILENT | XS_CTL_DATA_ONSTACK,
SDRETRIES, 6000);
}
}
static int
sd_scsibus_get_optparms(sd, dp, flags)
struct sd_softc *sd;
struct disk_parms *dp;
int flags;
{
struct sd_scsibus_mode_sense_data scsipi_sense;
u_long sectors;
int error;
dp->blksize = 512;
if ((sectors = scsipi_size(sd->sc_periph, flags)) == 0)
return (SDGP_RESULT_OFFLINE); /* XXX? */
/* XXX
* It is better to get the following params from the
* mode sense page 6 only (optical device parameter page).
* However, there are stupid optical devices which does NOT
* support the page 6. Ghaa....
*/
error = scsipi_mode_sense(sd->sc_periph, 0, 0x3f, &scsipi_sense.header,
sizeof(struct scsipi_mode_header) + sizeof(struct scsi_blk_desc),
flags | XS_CTL_DATA_ONSTACK, SDRETRIES, 6000);
if (error != 0)
return (SDGP_RESULT_OFFLINE); /* XXX? */
dp->blksize = _3btol(scsipi_sense.blk_desc.blklen);
if (dp->blksize == 0)
dp->blksize = 512;
/*
* Create a pseudo-geometry.
*/
dp->heads = 64;
dp->sectors = 32;
dp->cyls = sectors / (dp->heads * dp->sectors);
dp->disksize = sectors;
return (SDGP_RESULT_OK);
}
/*
* Get the scsi driver to send a full inquiry to the * device and use the
* results to fill out the disk parameter structure.
*/
static int
sd_scsibus_get_parms(sd, dp, flags)
struct sd_softc *sd;
struct disk_parms *dp;
int flags;
{
struct sd_scsibus_mode_sense_data scsipi_sense;
u_long sectors;
int page;
int error;
dp->rot_rate = 3600; /* XXX any way of getting this? */
/*
* If offline, the SDEV_MEDIA_LOADED flag will be
* cleared by the caller if necessary.
*/
if (sd->type == T_OPTICAL)
return (sd_scsibus_get_optparms(sd, dp, flags));
if ((error = sd_scsibus_mode_sense(sd, &scsipi_sense, page = 4,
flags)) == 0) {
SC_DEBUG(sd->sc_periph, SCSIPI_DB3,
("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n",
_3btol(scsipi_sense.pages.rigid_geometry.ncyl),
scsipi_sense.pages.rigid_geometry.nheads,
_2btol(scsipi_sense.pages.rigid_geometry.st_cyl_wp),
_2btol(scsipi_sense.pages.rigid_geometry.st_cyl_rwc),
_2btol(scsipi_sense.pages.rigid_geometry.land_zone)));
/*
* KLUDGE!! (for zone recorded disks)
* give a number of sectors so that sec * trks * cyls
* is <= disk_size
* can lead to wasted space! THINK ABOUT THIS !
*/
dp->heads = scsipi_sense.pages.rigid_geometry.nheads;
dp->cyls = _3btol(scsipi_sense.pages.rigid_geometry.ncyl);
dp->blksize = _3btol(scsipi_sense.blk_desc.blklen);
if (dp->heads == 0 || dp->cyls == 0)
goto fake_it;
if (dp->blksize == 0)
dp->blksize = 512;
sectors = scsipi_size(sd->sc_periph, flags);
dp->disksize = sectors;
sectors /= (dp->heads * dp->cyls);
dp->sectors = sectors; /* XXX dubious on SCSI */
return (SDGP_RESULT_OK);
}
if ((error = sd_scsibus_mode_sense(sd, &scsipi_sense, page = 5,
flags)) == 0) {
dp->heads = scsipi_sense.pages.flex_geometry.nheads;
dp->cyls = _2btol(scsipi_sense.pages.flex_geometry.ncyl);
dp->blksize = _3btol(scsipi_sense.blk_desc.blklen);
dp->sectors = scsipi_sense.pages.flex_geometry.ph_sec_tr;
dp->disksize = dp->heads * dp->cyls * dp->sectors;
if (dp->disksize == 0)
goto fake_it;
if (dp->blksize == 0)
dp->blksize = 512;
return (SDGP_RESULT_OK);
}
fake_it:
if ((sd->sc_periph->periph_quirks & PQUIRK_NOMODESENSE) == 0) {
if (error == 0)
printf("%s: mode sense (%d) returned nonsense",
sd->sc_dev.dv_xname, page);
else
printf("%s: could not mode sense (4/5)",
sd->sc_dev.dv_xname);
printf("; using fictitious geometry\n");
}
/*
* use adaptec standard fictitious geometry
* this depends on which controller (e.g. 1542C is
* different. but we have to put SOMETHING here..)
*/
sectors = scsipi_size(sd->sc_periph, flags);
dp->blksize = 512;
dp->disksize = sectors;
/* Try calling driver's method for figuring out geometry. */
if (sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom ==
NULL ||
!(*sd->sc_periph->periph_channel->chan_adapter->adapt_getgeom)
(sd->sc_periph, dp, sectors)) {
/*
* Use adaptec standard fictitious geometry
* this depends on which controller (e.g. 1542C is
* different. but we have to put SOMETHING here..)
*/
dp->heads = 64;
dp->sectors = 32;
dp->cyls = sectors / (64 * 32);
}
return (SDGP_RESULT_OK);
}
static int
sd_scsibus_flush(sd, flags)
struct sd_softc *sd;
int flags;
{
struct scsipi_periph *periph = sd->sc_periph;
struct scsi_synchronize_cache sync_cmd;
/*
* If the device is SCSI-2, issue a SYNCHRONIZE CACHE.
* We issue with address 0 length 0, which should be
* interpreted by the device as "all remaining blocks
* starting at address 0". We ignore ILLEGAL REQUEST
* in the event that the command is not supported by
* the device, and poll for completion so that we know
* that the cache has actually been flushed.
*
* Unless, that is, the device can't handle the SYNCHRONIZE CACHE
* command, as indicated by our quirks flags.
*
* XXX What about older devices?
*/
if (periph->periph_version >= 2 &&
(periph->periph_quirks & PQUIRK_NOSYNCCACHE) == 0) {
sd->flags |= SDF_FLUSHING;
bzero(&sync_cmd, sizeof(sync_cmd));
sync_cmd.opcode = SCSI_SYNCHRONIZE_CACHE;
return(scsipi_command(periph,
(struct scsipi_generic *)&sync_cmd, sizeof(sync_cmd),
NULL, 0, SDRETRIES, 100000, NULL,
flags|XS_CTL_IGNORE_ILLEGAL_REQUEST));
} else
return(0);
}