File: [local] / sys / scsi / scsiconf.c (download)
Revision 1.1, Tue Mar 4 16:16:07 2008 UTC (16 years, 1 month ago) by nbrk
Branch point for: MAIN
Initial revision
|
/* $OpenBSD: scsiconf.c,v 1.125 2007/05/08 18:50:39 deraadt Exp $ */
/* $NetBSD: scsiconf.c,v 1.57 1996/05/02 01:09:01 neil Exp $ */
/*
* Copyright (c) 1994 Charles Hannum. All rights reserved.
*
* 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 Charles Hannum.
* 4. The name of the author may not 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.
*/
/*
* Originally written by Julian Elischer (julian@tfs.com)
* 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@tfs.com) Sept 1992
*/
#include "bio.h"
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#if NBIO > 0
#include <sys/ioctl.h>
#include <sys/scsiio.h>
#include <dev/biovar.h>
#endif
/*
* Declarations
*/
int scsi_probedev(struct scsibus_softc *, int, int);
struct scsi_device probe_switch = {
NULL,
NULL,
NULL,
NULL,
};
int scsibusmatch(struct device *, void *, void *);
void scsibusattach(struct device *, struct device *, void *);
int scsibusactivate(struct device *, enum devact);
int scsibusdetach(struct device *, int);
int scsibussubmatch(struct device *, void *, void *);
#if NBIO > 0
int scsibus_bioctl(struct device *, u_long, caddr_t);
#endif
struct cfattach scsibus_ca = {
sizeof(struct scsibus_softc), scsibusmatch, scsibusattach,
scsibusdetach, scsibusactivate
};
struct cfdriver scsibus_cd = {
NULL, "scsibus", DV_DULL
};
#ifdef SCSIDEBUG
int scsidebug_buses = SCSIDEBUG_BUSES;
int scsidebug_targets = SCSIDEBUG_TARGETS;
int scsidebug_luns = SCSIDEBUG_LUNS;
int scsidebug_level = SCSIDEBUG_LEVEL;
#endif
int scsi_autoconf = SCSI_AUTOCONF;
int scsibusprint(void *, const char *);
const u_int8_t version_to_spc [] = {
0, /* 0x00: The device does not claim conformance to any standard. */
1, /* 0x01: (Obsolete) SCSI-1 in olden times. */
2, /* 0x02: (Obsolete) SCSI-2 in olden times. */
3, /* 0x03: The device complies to ANSI INCITS 301-1997 (SPC-3). */
2, /* 0x04: The device complies to ANSI INCITS 351-2001 (SPC-2). */
3, /* 0x05: The device complies to ANSI INCITS 408-2005 (SPC-3). */
4, /* 0x06: The device complies to SPC-4. */
0, /* 0x07: RESERVED. */
};
int
scsiprint(void *aux, const char *pnp)
{
/* only "scsibus"es can attach to "scsi"s; easy. */
if (pnp)
printf("scsibus at %s", pnp);
return (UNCONF);
}
int
scsibusmatch(struct device *parent, void *match, void *aux)
{
return (1);
}
/*
* The routine called by the adapter boards to get all their
* devices configured in.
*/
void
scsibusattach(struct device *parent, struct device *self, void *aux)
{
struct scsibus_softc *sb = (struct scsibus_softc *)self;
struct scsibus_attach_args *saa = aux;
struct scsi_link *sc_link_proto = saa->saa_sc_link;
int nbytes, i;
if (!cold)
scsi_autoconf = 0;
sc_link_proto->scsibus = sb->sc_dev.dv_unit;
sb->adapter_link = sc_link_proto;
if (sb->adapter_link->adapter_buswidth == 0)
sb->adapter_link->adapter_buswidth = 8;
sb->sc_buswidth = sb->adapter_link->adapter_buswidth;
if (sb->adapter_link->luns == 0)
sb->adapter_link->luns = 8;
printf(": %d targets\n", sb->sc_buswidth);
/* Initialize shared data. */
scsi_init();
nbytes = sb->sc_buswidth * sizeof(struct scsi_link **);
sb->sc_link = malloc(nbytes, M_DEVBUF, M_NOWAIT);
if (sb->sc_link == NULL)
panic("scsibusattach: can't allocate target links");
nbytes = sb->adapter_link->luns * sizeof(struct scsi_link *);
for (i = 0; i < sb->sc_buswidth; i++) {
sb->sc_link[i] = malloc(nbytes, M_DEVBUF, M_NOWAIT);
if (sb->sc_link[i] == NULL)
panic("scsibusattach: can't allocate lun links");
bzero(sb->sc_link[i], nbytes);
}
#if NBIO > 0
if (bio_register(&sb->sc_dev, scsibus_bioctl) != 0)
printf("%s: unable to register bio\n", sb->sc_dev.dv_xname);
#endif
scsi_probe_bus(sb);
}
int
scsibusactivate(struct device *dev, enum devact act)
{
return (config_activate_children(dev, act));
}
int
scsibusdetach(struct device *dev, int type)
{
struct scsibus_softc *sb = (struct scsibus_softc *)dev;
int i, j, error;
#if NBIO > 0
bio_unregister(&sb->sc_dev);
#endif
if ((error = config_detach_children(dev, type)) != 0)
return (error);
for (i = 0; i < sb->sc_buswidth; i++) {
if (sb->sc_link[i] != NULL) {
for (j = 0; j < sb->adapter_link->luns; j++) {
if (sb->sc_link[i][j] != NULL)
free(sb->sc_link[i][j], M_DEVBUF);
}
free(sb->sc_link[i], M_DEVBUF);
}
}
free(sb->sc_link, M_DEVBUF);
/* Free shared data. */
scsi_deinit();
return (0);
}
int
scsibussubmatch(struct device *parent, void *match, void *aux)
{
struct cfdata *cf = match;
struct scsi_attach_args *sa = aux;
struct scsi_link *sc_link = sa->sa_sc_link;
if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != sc_link->target)
return (0);
if (cf->cf_loc[1] != -1 && cf->cf_loc[1] != sc_link->lun)
return (0);
return ((*cf->cf_attach->ca_match)(parent, match, aux));
}
#if NBIO > 0
int
scsibus_bioctl(struct device *dev, u_long cmd, caddr_t addr)
{
struct scsibus_softc *sc = (struct scsibus_softc *)dev;
struct sbioc_device *sdev;
switch (cmd) {
case SBIOCPROBE:
sdev = (struct sbioc_device *)addr;
if (sdev->sd_target == -1 && sdev->sd_lun == -1)
return (scsi_probe_bus(sc));
/* specific lun and wildcard target is bad */
if (sdev->sd_target == -1)
return (EINVAL);
if (sdev->sd_lun == -1)
return (scsi_probe_target(sc, sdev->sd_target));
return (scsi_probe_lun(sc, sdev->sd_target, sdev->sd_lun));
case SBIOCDETACH:
sdev = (struct sbioc_device *)addr;
if (sdev->sd_target == -1)
return (EINVAL);
if (sdev->sd_lun == -1)
return (scsi_detach_target(sc, sdev->sd_target, 0));
return (scsi_detach_lun(sc, sdev->sd_target, sdev->sd_lun, 0));
default:
return (ENOTTY);
}
}
#endif
int
scsi_probe_bus(struct scsibus_softc *sc)
{
struct scsi_link *alink = sc->adapter_link;
int i;
for (i = 0; i < alink->adapter_buswidth; i++)
scsi_probe_target(sc, i);
return (0);
}
int
scsi_probe_target(struct scsibus_softc *sc, int target)
{
struct scsi_link *alink = sc->adapter_link;
struct scsi_link *link;
struct scsi_report_luns_data *report;
int i, nluns, lun;
if (scsi_probe_lun(sc, target, 0) == EINVAL)
return (EINVAL);
link = sc->sc_link[target][0];
if (link == NULL)
return (ENXIO);
if ((link->flags & (SDEV_UMASS | SDEV_ATAPI)) == 0 &&
SCSISPC(link->inqdata.version) > 2) {
report = malloc(sizeof(*report), M_TEMP, M_WAITOK);
if (report == NULL)
goto dumbscan;
if (scsi_report_luns(link, REPORT_NORMAL, report,
sizeof(*report), scsi_autoconf | SCSI_SILENT |
SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_NOT_READY |
SCSI_IGNORE_MEDIA_CHANGE, 10000) != 0) {
free(report, M_TEMP);
goto dumbscan;
}
/*
* XXX In theory we should check if data is full, which
* would indicate it needs to be enlarged and REPORT
* LUNS tried again. Solaris tries up to 3 times with
* larger sizes for data.
*/
nluns = _4btol(report->length) / RPL_LUNDATA_SIZE;
for (i = 0; i < nluns; i++) {
if (report->luns[i].lundata[0] != 0)
continue;
lun = report->luns[i].lundata[RPL_LUNDATA_T0LUN];
if (lun == 0)
continue;
/* Probe the provided LUN. Don't check LUN 0. */
sc->sc_link[target][0] = NULL;
scsi_probe_lun(sc, target, lun);
sc->sc_link[target][0] = link;
}
free(report, M_TEMP);
return (0);
}
dumbscan:
for (i = 1; i < alink->luns; i++) {
if (scsi_probe_lun(sc, target, i) == EINVAL)
break;
}
return (0);
}
int
scsi_probe_lun(struct scsibus_softc *sc, int target, int lun)
{
struct scsi_link *alink = sc->adapter_link;
if (target < 0 || target >= alink->adapter_buswidth ||
target == alink->adapter_target ||
lun < 0 || lun >= alink->luns)
return (ENXIO);
return (scsi_probedev(sc, target, lun));
}
int
scsi_detach_bus(struct scsibus_softc *sc, int flags)
{
struct scsi_link *alink = sc->adapter_link;
int i;
for (i = 0; i < alink->adapter_buswidth; i++)
scsi_detach_target(sc, i, flags);
return (0);
}
int
scsi_detach_target(struct scsibus_softc *sc, int target, int flags)
{
struct scsi_link *alink = sc->adapter_link;
int i, err, rv = 0, detached = 0;
if (target < 0 || target >= alink->adapter_buswidth ||
target == alink->adapter_target)
return (ENXIO);
if (sc->sc_link[target] == NULL)
return (ENXIO);
for (i = 0; i < alink->luns; i++) { /* nicer backwards? */
if (sc->sc_link[target][i] == NULL)
continue;
err = scsi_detach_lun(sc, target, i, flags);
if (err != 0)
rv = err;
detached = 1;
}
return (detached ? rv : ENXIO);
}
int
scsi_detach_lun(struct scsibus_softc *sc, int target, int lun, int flags)
{
struct scsi_link *alink = sc->adapter_link;
struct scsi_link *link;
int rv;
if (target < 0 || target >= alink->adapter_buswidth ||
target == alink->adapter_target ||
lun < 0 || lun >= alink->luns)
return (ENXIO);
if (sc->sc_link[target] == NULL)
return (ENXIO);
link = sc->sc_link[target][lun];
if (link == NULL)
return (ENXIO);
if (((flags & DETACH_FORCE) == 0) && (link->flags & SDEV_OPEN))
return (EBUSY);
/* detaching a device from scsibus is a two step process... */
/* 1. detach the device */
rv = config_detach(link->device_softc, flags);
if (rv != 0)
return (rv);
/* 2. free up its state in the midlayer */
free(link, M_DEVBUF);
sc->sc_link[target][lun] = NULL;
return (0);
}
void
scsi_strvis(u_char *dst, u_char *src, int len)
{
u_char last;
/* Trim leading and trailing whitespace and NULs. */
while (len > 0 && (src[0] == ' ' || src[0] == '\t' || src[0] == '\n' ||
src[0] == '\0' || src[0] == 0xff))
++src, --len;
while (len > 0 && (src[len-1] == ' ' || src[len-1] == '\t' ||
src[len-1] == '\n' || src[len-1] == '\0' || src[len-1] == 0xff))
--len;
last = 0xff;
while (len > 0) {
switch (*src) {
case ' ':
case '\t':
case '\n':
case '\0':
case 0xff:
/* collapse whitespace and NULs to a single space */
if (last != ' ')
*dst++ = ' ';
last = ' ';
break;
case '\\':
/* quote characters */
*dst++ = '\\';
*dst++ = '\\';
last = '\\';
break;
default:
if (*src < 0x20 || *src >= 0x80) {
/* non-printable characters */
*dst++ = '\\';
*dst++ = ((*src & 0300) >> 6) + '0';
*dst++ = ((*src & 0070) >> 3) + '0';
*dst++ = ((*src & 0007) >> 0) + '0';
} else {
/* normal characters */
*dst++ = *src;
}
last = *src;
break;
}
++src, --len;
}
*dst++ = 0;
}
struct scsi_quirk_inquiry_pattern {
struct scsi_inquiry_pattern pattern;
u_int16_t quirks;
};
const struct scsi_quirk_inquiry_pattern scsi_quirk_patterns[] = {
{{T_CDROM, T_REMOV,
"PLEXTOR", "CD-ROM PX-40TS", "1.01"}, SDEV_NOSYNC},
{{T_DIRECT, T_FIXED,
"MICROP ", "1588-15MBSUN0669", ""}, SDEV_AUTOSAVE},
{{T_DIRECT, T_FIXED,
"DEC ", "RZ55 (C) DEC", ""}, SDEV_AUTOSAVE},
{{T_DIRECT, T_FIXED,
"EMULEX ", "MD21/S2 ESDI", "A00"}, SDEV_AUTOSAVE},
{{T_DIRECT, T_FIXED,
"IBMRAID ", "0662S", ""}, SDEV_AUTOSAVE},
{{T_DIRECT, T_FIXED,
"IBM ", "0663H", ""}, SDEV_AUTOSAVE},
{{T_DIRECT, T_FIXED,
"IBM", "0664", ""}, SDEV_AUTOSAVE},
{{T_DIRECT, T_FIXED,
"IBM ", "H3171-S2", ""}, SDEV_AUTOSAVE},
{{T_DIRECT, T_FIXED,
"IBM ", "KZ-C", ""}, SDEV_AUTOSAVE},
/* Broken IBM disk */
{{T_DIRECT, T_FIXED,
"" , "DFRSS2F", ""}, SDEV_AUTOSAVE},
{{T_DIRECT, T_FIXED,
"QUANTUM ", "ELS85S ", ""}, SDEV_AUTOSAVE},
{{T_DIRECT, T_REMOV,
"iomega", "jaz 1GB", ""}, SDEV_NOTAGS},
{{T_DIRECT, T_FIXED,
"MICROP", "4421-07", ""}, SDEV_NOTAGS},
{{T_DIRECT, T_FIXED,
"SEAGATE", "ST150176LW", "0002"}, SDEV_NOTAGS},
{{T_DIRECT, T_FIXED,
"HP", "C3725S", ""}, SDEV_NOTAGS},
{{T_DIRECT, T_FIXED,
"IBM", "DCAS", ""}, SDEV_NOTAGS},
{{T_SEQUENTIAL, T_REMOV,
"SONY ", "SDT-5000 ", "3."}, SDEV_NOSYNC|SDEV_NOWIDE},
{{T_SEQUENTIAL, T_REMOV,
"WangDAT ", "Model 1300 ", "02.4"}, SDEV_NOSYNC|SDEV_NOWIDE},
{{T_SEQUENTIAL, T_REMOV,
"WangDAT ", "Model 2600 ", "01.7"}, SDEV_NOSYNC|SDEV_NOWIDE},
{{T_SEQUENTIAL, T_REMOV,
"WangDAT ", "Model 3200 ", "02.2"}, SDEV_NOSYNC|SDEV_NOWIDE},
/* ATAPI device quirks */
{{T_CDROM, T_REMOV,
"ALPS ELECTRIC CO.,LTD. DC544C", "", "SW03D"}, ADEV_NOTUR},
{{T_CDROM, T_REMOV,
"CR-2801TE", "", "1.07"}, ADEV_NOSENSE},
{{T_CDROM, T_REMOV,
"CREATIVECD3630E", "", "AC101"}, ADEV_NOSENSE},
{{T_CDROM, T_REMOV,
"FX320S", "", "q01"}, ADEV_NOSENSE},
{{T_CDROM, T_REMOV,
"GCD-R580B", "", "1.00"}, ADEV_LITTLETOC},
{{T_CDROM, T_REMOV,
"MATSHITA CR-574", "", "1.02"}, ADEV_NOCAPACITY},
{{T_CDROM, T_REMOV,
"MATSHITA CR-574", "", "1.06"}, ADEV_NOCAPACITY},
{{T_CDROM, T_REMOV,
"Memorex CRW-2642", "", "1.0g"}, ADEV_NOSENSE},
{{T_CDROM, T_REMOV,
"NEC CD-ROM DRIVE:273", "", "4.21"}, ADEV_NOTUR},
{{T_CDROM, T_REMOV,
"SANYO CRD-256P", "", "1.02"}, ADEV_NOCAPACITY},
{{T_CDROM, T_REMOV,
"SANYO CRD-254P", "", "1.02"}, ADEV_NOCAPACITY},
{{T_CDROM, T_REMOV,
"SANYO CRD-S54P", "", "1.08"}, ADEV_NOCAPACITY},
{{T_CDROM, T_REMOV,
"CD-ROM CDR-S1", "", "1.70"}, ADEV_NOCAPACITY}, /* Sanyo */
{{T_CDROM, T_REMOV,
"CD-ROM CDR-N16", "", "1.25"}, ADEV_NOCAPACITY}, /* Sanyo */
{{T_CDROM, T_REMOV,
"UJDCD8730", "", "1.14"}, ADEV_NODOORLOCK}, /* Acer */
};
/*
* Print out autoconfiguration information for a subdevice.
*
* This is a slight abuse of 'standard' autoconfiguration semantics,
* because 'print' functions don't normally print the colon and
* device information. However, in this case that's better than
* either printing redundant information before the attach message,
* or having the device driver call a special function to print out
* the standard device information.
*/
int
scsibusprint(void *aux, const char *pnp)
{
struct scsi_attach_args *sa = aux;
struct scsi_inquiry_data *inqbuf;
u_int8_t type;
int removable;
char *dtype, *qtype;
char vendor[33], product[65], revision[17];
int target, lun;
if (pnp != NULL)
printf("%s", pnp);
inqbuf = sa->sa_inqbuf;
target = sa->sa_sc_link->target;
lun = sa->sa_sc_link->lun;
type = inqbuf->device & SID_TYPE;
removable = inqbuf->dev_qual2 & SID_REMOVABLE ? 1 : 0;
/*
* Figure out basic device type and qualifier.
*/
dtype = 0;
switch (inqbuf->device & SID_QUAL) {
case SID_QUAL_LU_OK:
qtype = "";
break;
case SID_QUAL_LU_OFFLINE:
qtype = " offline";
break;
case SID_QUAL_RSVD:
panic("scsibusprint: qualifier == SID_QUAL_RSVD");
case SID_QUAL_BAD_LU:
panic("scsibusprint: qualifier == SID_QUAL_BAD_LU");
default:
qtype = "";
dtype = "vendor-unique";
break;
}
if (dtype == 0) {
switch (type) {
case T_DIRECT:
dtype = "direct";
break;
case T_SEQUENTIAL:
dtype = "sequential";
break;
case T_PRINTER:
dtype = "printer";
break;
case T_PROCESSOR:
dtype = "processor";
break;
case T_CDROM:
dtype = "cdrom";
break;
case T_WORM:
dtype = "worm";
break;
case T_SCANNER:
dtype = "scanner";
break;
case T_OPTICAL:
dtype = "optical";
break;
case T_CHANGER:
dtype = "changer";
break;
case T_COMM:
dtype = "communication";
break;
case T_ENCLOSURE:
dtype = "enclosure services";
break;
case T_RDIRECT:
dtype = "simplified direct";
break;
case T_NODEVICE:
panic("scsibusprint: device type T_NODEVICE");
default:
dtype = "unknown";
break;
}
}
scsi_strvis(vendor, inqbuf->vendor, 8);
scsi_strvis(product, inqbuf->product, 16);
scsi_strvis(revision, inqbuf->revision, 4);
printf(" targ %d lun %d: <%s, %s, %s> SCSI%d %d/%s %s%s",
target, lun, vendor, product, revision,
SCSISPC(inqbuf->version), type, dtype,
removable ? "removable" : "fixed", qtype);
return (UNCONF);
}
/*
* Given a target and lun, ask the device what it is, and find the correct
* driver table entry.
*
* Return 0 if further LUNs are possible, EINVAL if not.
*/
int
scsi_probedev(struct scsibus_softc *scsi, int target, int lun)
{
const struct scsi_quirk_inquiry_pattern *finger;
static struct scsi_inquiry_data inqbuf;
struct scsi_attach_args sa;
struct scsi_link *sc_link;
struct cfdata *cf;
int priority, rslt = 0;
/* Skip this slot if it is already attached and try the next LUN. */
if (scsi->sc_link[target][lun] != NULL)
return (0);
sc_link = malloc(sizeof(*sc_link), M_DEVBUF, M_NOWAIT);
if (sc_link == NULL)
return (EINVAL);
*sc_link = *scsi->adapter_link;
sc_link->target = target;
sc_link->lun = lun;
sc_link->device = &probe_switch;
SC_DEBUG(sc_link, SDEV_DB2, ("scsi_link created.\n"));
/*
* Tell drivers that are paying attention to avoid sync/wide/tags until
* INQUIRY data has been processed and the quirks information is
* complete. Some drivers set bits in quirks before we get here, so
* just add NOTAGS, NOWIDE and NOSYNC.
*/
sc_link->quirks |= SDEV_NOSYNC | SDEV_NOWIDE | SDEV_NOTAGS;
/*
* Ask the device what it is
*/
#ifdef SCSIDEBUG
if (((1 << sc_link->scsibus) & scsidebug_buses) &&
((1 << target) & scsidebug_targets) &&
((1 << lun) & scsidebug_luns))
sc_link->flags |= scsidebug_level;
#endif /* SCSIDEBUG */
#if defined(mvme68k)
if (lun == 0) {
/* XXX some drivers depend on this */
scsi_test_unit_ready(sc_link, TEST_READY_RETRIES,
scsi_autoconf | SCSI_IGNORE_ILLEGAL_REQUEST |
SCSI_IGNORE_NOT_READY | SCSI_IGNORE_MEDIA_CHANGE);
}
#endif
/* Now go ask the device all about itself. */
rslt = scsi_inquire(sc_link, &inqbuf, scsi_autoconf | SCSI_SILENT);
if (rslt != 0) {
SC_DEBUG(sc_link, SDEV_DB2, ("Bad LUN. rslt = %i\n", rslt));
if (lun == 0)
rslt = EINVAL;
goto bad;
}
switch (inqbuf.device & SID_QUAL) {
case SID_QUAL_RSVD:
case SID_QUAL_BAD_LU:
case SID_QUAL_LU_OFFLINE:
SC_DEBUG(sc_link, SDEV_DB1,
("Bad LUN. SID_QUAL = 0x%02x\n", inqbuf.device & SID_QUAL));
goto bad;
case SID_QUAL_LU_OK:
if ((inqbuf.device & SID_TYPE) == T_NODEVICE) {
SC_DEBUG(sc_link, SDEV_DB1,
("Bad LUN. SID_TYPE = T_NODEVICE\n"));
goto bad;
}
break;
default:
break;
}
if (lun == 0 || scsi->sc_link[target][0] == NULL)
;
else if (sc_link->flags & SDEV_UMASS)
;
else if (memcmp(&inqbuf, &scsi->sc_link[target][0]->inqdata,
sizeof inqbuf) == 0) {
/* The device doesn't distinguish between LUNs. */
SC_DEBUG(sc_link, SDEV_DB1, ("IDENTIFY not supported.\n"));
rslt = EINVAL;
goto bad;
}
finger = (const struct scsi_quirk_inquiry_pattern *)scsi_inqmatch(
&inqbuf, scsi_quirk_patterns,
sizeof(scsi_quirk_patterns)/sizeof(scsi_quirk_patterns[0]),
sizeof(scsi_quirk_patterns[0]), &priority);
/*
* Based upon the inquiry flags we got back, and if we're
* at SCSI-2 or better, remove some limiting quirks.
*/
if (SCSISPC(inqbuf.version) >= 2) {
if ((inqbuf.flags & SID_CmdQue) != 0)
sc_link->quirks &= ~SDEV_NOTAGS;
if ((inqbuf.flags & SID_Sync) != 0)
sc_link->quirks &= ~SDEV_NOSYNC;
if ((inqbuf.flags & SID_WBus16) != 0)
sc_link->quirks &= ~SDEV_NOWIDE;
}
/*
* Now apply any quirks from the table.
*/
if (priority != 0)
sc_link->quirks |= finger->quirks;
/*
* Save INQUIRY.
*/
memcpy(&sc_link->inqdata, &inqbuf, sizeof(sc_link->inqdata));
/*
* note what BASIC type of device it is
*/
if ((inqbuf.dev_qual2 & SID_REMOVABLE) != 0)
sc_link->flags |= SDEV_REMOVABLE;
sa.sa_sc_link = sc_link;
sa.sa_inqbuf = &sc_link->inqdata;
if ((cf = config_search(scsibussubmatch, (struct device *)scsi,
&sa)) == 0) {
scsibusprint(&sa, scsi->sc_dev.dv_xname);
printf(" not configured\n");
goto bad;
}
/*
* Braindead USB devices, especially some x-in-1 media readers, try to
* 'help' by pretending any LUN is actually LUN 0 until they see a
* different LUN used in a command. So do an INQUIRY on LUN 1 at this
* point (since we are done with the data in inqbuf) to prevent such
* helpfulness before it causes confusion.
*/
if (lun == 0 && (sc_link->flags & SDEV_UMASS) &&
scsi->sc_link[target][1] == NULL && sc_link->luns > 1) {
sc_link->lun = 1;
scsi_inquire(sc_link, &inqbuf, scsi_autoconf | SCSI_SILENT);
sc_link->lun = 0;
}
scsi->sc_link[target][lun] = sc_link;
/*
* Generate a TEST_UNIT_READY command. This gives drivers waiting for
* valid quirks data a chance to set wide/sync/tag options
* appropriately. It also clears any outstanding ACA conditions that
* INQUIRY may leave behind.
*
* Do this now so that any messages generated by config_attach() do not
* have negotiation messages inserted into their midst.
*/
scsi_test_unit_ready(sc_link, TEST_READY_RETRIES,
scsi_autoconf | SCSI_IGNORE_ILLEGAL_REQUEST |
SCSI_IGNORE_NOT_READY | SCSI_IGNORE_MEDIA_CHANGE);
config_attach((struct device *)scsi, cf, &sa, scsibusprint);
return (0);
bad:
free(sc_link, M_DEVBUF);
return (rslt);
}
/*
* Return a priority based on how much of the inquiry data matches
* the patterns for the particular driver.
*/
const void *
scsi_inqmatch(struct scsi_inquiry_data *inqbuf, const void *_base,
int nmatches, int matchsize, int *bestpriority)
{
u_int8_t type;
int removable;
const void *bestmatch;
const unsigned char *base = (const unsigned char *)_base;
/* Include the qualifier to catch vendor-unique types. */
type = inqbuf->device;
removable = inqbuf->dev_qual2 & SID_REMOVABLE ? T_REMOV : T_FIXED;
for (*bestpriority = 0, bestmatch = 0; nmatches--; base += matchsize) {
struct scsi_inquiry_pattern *match = (void *)base;
int priority, len;
if (type != match->type)
continue;
if (removable != match->removable)
continue;
priority = 2;
len = strlen(match->vendor);
if (bcmp(inqbuf->vendor, match->vendor, len))
continue;
priority += len;
len = strlen(match->product);
if (bcmp(inqbuf->product, match->product, len))
continue;
priority += len;
len = strlen(match->revision);
if (bcmp(inqbuf->revision, match->revision, len))
continue;
priority += len;
#if SCSIDEBUG
printf("scsi_inqmatch: %d/%d/%d <%s, %s, %s>\n",
priority, match->type, match->removable,
match->vendor, match->product, match->revision);
#endif
if (priority > *bestpriority) {
*bestpriority = priority;
bestmatch = base;
}
}
return (bestmatch);
}
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