d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
9bf308efab
freebsd-dev/sys/scsi/scsiconf.c
Peter Dufault 7562b0d606 Reviewed by: gibbs@estienne.CS.Berkeley.EDU 
Reenabled "SCIOCOMAND" ioctl.
Restructured so low level drivers can easily request retries.
Added preliminary fixed SCSI devices (should be revisited before 2.1)
Added "ssc" device that can have its' (HBA, ID, LUN) set via ioctl.
1995-01-08 13:38:38 +00:00

986 lines
22 KiB
C
Raw Blame History

/*
* 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
*
* $Id: scsiconf.c,v 1.17 1994/12/18 18:48:39 phk Exp $
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/stat.h>
#include <sys/malloc.h>
#include <sys/devconf.h>
#include <sys/conf.h>
#include "st.h"
#include "sd.h"
#include "ch.h"
#include "cd.h"
#include "uk.h"
#include "su.h"
#include "scbus.h"
/* If we have any at all, we want at least 8 */
#if NSCBUS > 0
#if NSCBUS < 8
#undef NSCBUS
#endif /* NSCBUS < 8 */
#endif /* NSCBUS > 0 */
#ifndef NSCBUS
#define NSCBUS 8
#endif /* NSCBUS */
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#ifdef TFS
#include "bll.h"
#include "cals.h"
#include "kil.h"
#include "scan.h"
#else /* TFS */
#define NBLL 0
#define NCALS 0
#define NKIL 0
#define NSCAN 0
#endif /* TFS */
#if NSD > 0
extern sdattach();
#endif /* NSD */
#if NST > 0
extern stattach();
#endif /* NST */
#if NCH > 0
extern chattach();
#endif /* NCH */
#if NCD > 0
extern cdattach();
#endif /* NCD */
#if NBLL > 0
extern bllattach();
#endif /* NBLL */
#if NCALS > 0
extern calsattach();
#endif /* NCALS */
#if NKIL > 0
extern kil_attach();
#endif /* NKIL */
#if NUK > 0
extern ukattach();
#endif /* NUK */
/*
* One of these is allocated and filled in for each scsi bus.
* it holds pointers to allow the scsi bus to get to the driver
* That is running each LUN on the bus
* it also has a template entry which is the prototype struct
* supplied by the adapter driver, this is used to initialise
* the others, before they have the rest of the fields filled in
*/
struct scsibus_data *scbus_data[NSCBUS];
/*
* The structure of pre-configured devices that might be turned
* off and therefore may not show up
*/
struct predefined {
u_char scsibus;
u_char dev;
u_char lu;
errval(*attach_rtn) ();
char *devname;
char flags;
} pd[] =
{
#ifdef EXAMPLE_PREDEFINE
#if NSD > 0
{
0, 0, 0, sdattach, "sd", 0
}, /* define a disk at scsibus=0 dev=0 lu=0 */
#endif /* NSD */
#endif /* EXAMPLE_PREDEFINE */
{
0, 9, 9
} /*illegal dummy end entry */
};
/*
* The structure of known drivers for autoconfiguration
*/
struct scsidevs {
u_int32 type;
boolean removable;
char *manufacturer;
char *model;
char *version;
errval(*attach_rtn) ();
char *devname;
char flags; /* 1 show my comparisons during boot(debug) */
#ifdef NEW_SCSICONF
u_int16 quirks;
void *devmodes;
#endif
};
#define SC_SHOWME 0x01
#define SC_ONE_LU 0x00
#define SC_MORE_LUS 0x02
#if NUK > 0
static struct scsidevs unknowndev =
{
-1, 0, "*", "*", "*",
ukattach, "uk", SC_MORE_LUS
};
#endif /*NUK*/
#ifdef NEW_SCSICONF
static st_modes mode_tandberg3600 =
{
{0, 0, 0}, /* minor 0,1,2,3 */
{0, ST_Q_FORCE_VAR_MODE, QIC_525}, /* minor 4,5,6,7 */
{0, 0, QIC_150}, /* minor 8,9,10,11 */
{0, 0, QIC_120} /* minor 12,13,14,15 */
};
static st_modes mode_archive2525 =
{
{0, ST_Q_SNS_HLP, 0}, /* minor 0,1,2,3 */
{0, ST_Q_SNS_HLP, QIC_525}, /* minor 4,5,6,7 */
{0, 0, QIC_150}, /* minor 8,9,10,11 */
{0, 0, QIC_120} /* minor 12,13,14,15 */
};
static st_modes mode_archive150 =
{
{0, 0, 0}, /* minor 0,1,2,3 */
{0, 0, QIC_150}, /* minor 4,5,6,7 */
{0, 0, QIC_120}, /* minor 8,9,10,11 */
{0, 0, QIC_24} /* minor 12,13,14,15 */
};
static st_modes mode_wangtek5525 =
{
{0, 0, 0}, /* minor 0,1,2,3 */
{0, ST_Q_BLKSIZ, QIC_525}, /* minor 4,5,6,7 */
{0, 0, QIC_150}, /* minor 8,9,10,11 */
{0, 0, QIC_120} /* minor 12,13,14,15 */
};
static st_modes mode_wangdat1300 =
{
{0, 0, 0}, /* minor 0,1,2,3 */
{512, ST_Q_FORCE_FIXED_MODE, DDS}, /* minor 4,5,6,7 */
{1024, ST_Q_FORCE_FIXED_MODE, DDS}, /* minor 8,9,10,11 */
{0, ST_Q_FORCE_VAR_MODE, DDS} /* minor 12,13,14,15 */
};
static st_modes mode_unktape =
{
{512, ST_Q_FORCE_FIXED_MODE, 0}, /* minor 0,1,2,3 */
{512, ST_Q_FORCE_FIXED_MODE, QIC_24}, /* minor 4,5,6,7 */
{0, ST_Q_FORCE_VAR_MODE, HALFINCH_1600}, /* minor 8,9,10,11 */
{0, ST_Q_FORCE_VAR_MODE, HALFINCH_6250} /* minor 12,13,14,15 */
};
#endif /* NEW_SCSICONF */
static struct scsidevs knowndevs[] =
#ifdef NEW_SCSICONF
{
#if NSD > 0
{
T_DIRECT, T_FIXED, "MAXTOR", "XT-4170S", "B5A",
sdattach, "mx1", SC_ONE_LU
},
{
T_DIRECT, T_FIXED, "*", "*", "*",
sdattach, "sd", SC_ONE_LU
},
#endif /* NSD */
#if NST > 0
{
T_SEQUENTIAL, T_REMOV, "TANDBERG", " TDC 3600", "*",
stattach, "st", SC_ONE_LU, ST_Q_NEEDS_PAGE_0, mode_tandberg3600
},
{
T_SEQUENTIAL, T_REMOV, "ARCHIVE", "VIPER 2525*", "-005",
stattach, "st", SC_ONE_LU, 0, mode_archive2525
},
{
T_SEQUENTIAL, T_REMOV, "ARCHIVE", "VIPER 150", "*",
stattach, "st", SC_ONE_LU, ST_Q_NEEDS_PAGE_0, mode_archive150
},
{
T_SEQUENTIAL, T_REMOV, "WANGTEK", "5525ES*", "*",
stattach, "st", SC_ONE_LU, 0, mode_wangtek5525
},
{
T_SEQUENTIAL, T_REMOV, "WangDAT", "Model 1300", "*",
stattach, "st", SC_ONE_LU, 0, mode_wangdat1300
},
{
T_SEQUENTIAL, T_REMOV, "*", "*", "*",
stattach, "st", SC_ONE_LU, 0, mode_unktape
},
#endif /* NST */
#if NCALS > 0
{
T_PROCESSOR, T_FIXED, "*", "*", "*",
calsattach, "cals", SC_MORE_LUS
},
#endif /* NCALS */
#if NCH > 0
{
T_CHANGER, T_REMOV, "*", "*", "*",
chattach, "ch", SC_ONE_LU
},
#endif /* NCH */
#if NCD > 0
#ifndef UKTEST /* make cdroms unrecognised to test the uk driver */
{
T_READONLY, T_REMOV, "SONY", "CD-ROM CDU-8012", "3.1a",
cdattach, "cd", SC_ONE_LU
},
{
T_READONLY, T_REMOV, "PIONEER", "CD-ROM DRM-600", "*",
cdattach, "cd", SC_MORE_LUS
},
#endif
#endif /* NCD */
#if NBLL > 0
{
T_PROCESSOR, T_FIXED, "AEG", "READER", "V1.0",
bllattach, "bll", SC_MORE_LUS
},
#endif /* NBLL */
#if NKIL > 0
{
T_SCANNER, T_FIXED, "KODAK", "IL Scanner 900", "*",
kil_attach, "kil", SC_ONE_LU
},
#endif /* NKIL */
{
0
}
};
#else
{
#if NSD > 0
{
T_DIRECT, T_FIXED, "standard", "any"
,"any", sdattach, "sd", SC_ONE_LU
},
{
T_DIRECT, T_FIXED, "MAXTOR ", "XT-4170S "
,"B5A ", sdattach, "mx1", SC_ONE_LU
},
#endif /* NSD */
#if NST > 0
{
T_SEQUENTIAL, T_REMOV, "standard", "any"
,"any", stattach, "st", SC_ONE_LU
},
#endif /* NST */
#if NCALS > 0
{
T_PROCESSOR, T_FIXED, "standard", "any"
,"any", calsattach, "cals", SC_MORE_LUS
},
#endif /* NCALS */
#if NCH > 0
{
T_CHANGER, T_REMOV, "standard", "any"
,"any", chattach, "ch", SC_ONE_LU
},
#endif /* NCH */
#if NCD > 0
#ifndef UKTEST /* make cdroms unrecognised to test the uk driver */
{
T_READONLY, T_REMOV, "SONY ", "CD-ROM CDU-8012 "
,"3.1a", cdattach, "cd", SC_ONE_LU
},
{
T_READONLY, T_REMOV, "PIONEER ", "CD-ROM DRM-600 "
,"any", cdattach, "cd", SC_MORE_LUS
},
#endif
#endif /* NCD */
#if NBLL > 0
{
T_PROCESSOR, T_FIXED, "AEG ", "READER "
,"V1.0", bllattach, "bll", SC_MORE_LUS
},
#endif /* NBLL */
#if NKIL > 0
{
T_SCANNER, T_FIXED, "KODAK ", "IL Scanner 900 "
,"any", kil_attach, "kil", SC_ONE_LU
},
#endif /* NKIL */
{
0
}
};
#endif /* NEW_SCSICONF */
/*
* Declarations
*/
struct predefined *scsi_get_predef();
struct scsidevs *scsi_probedev();
struct scsidevs *selectdev();
errval scsi_probe_bus __P((int bus, int targ, int lun));
struct scsi_device probe_switch =
{
NULL,
NULL,
NULL,
NULL,
"probe",
0,
{ 0, 0 }
};
/*
* controls debug level within the scsi subsystem -
* see scsiconf.h for values
*/
int32 scsibus = 0x0; /* This is the Nth scsibus we've seen */
/*
* XXX
* This is BOGUS.
* We do this because it was easier than adding the requisite information
* to the scsi_link structure and modifying everything to use that.
* Someday, we will do just that, and users will be able to nail down their
* preferred SCSI ids.
*/
struct kern_devconf kdc_scbus0 = {
0, 0, 0, /* filled in by dev_attach */
"scbus", 0, MDDC_SCBUS,
0, 0, 0, 0, /* no external data */
0, /* no parent */
0, /* no parentdata */
DC_BUSY, /* busses are always busy */
"SCSI subsystem"
};
/*
* The routine called by the adapter boards to get all their
* devices configured in.
*/
void
scsi_attachdevs(sc_link_proto)
struct scsi_link *sc_link_proto;
{
static int timesthru = 0;
if(!timesthru++) {
dev_attach(&kdc_scbus0);
}
if(scsibus >= NSCBUS) {
printf("too many scsi busses, reconfigure the kernel\n");
return;
}
sc_link_proto->scsibus = scsibus;
scbus_data[scsibus] = malloc(sizeof(struct scsibus_data), M_TEMP, M_NOWAIT);
if(!scbus_data[scsibus]) {
panic("scsi_attachdevs: malloc\n");
}
bzero(scbus_data[scsibus], sizeof(struct scsibus_data));
scbus_data[scsibus]->adapter_link = sc_link_proto;
#if defined(SCSI_DELAY) && SCSI_DELAY > 2
printf("%s%d waiting for scsi devices to settle\n",
sc_link_proto->adapter->name, sc_link_proto->adapter_unit);
#else /* SCSI_DELAY > 2 */
#undef SCSI_DELAY
#define SCSI_DELAY 2
#endif /* SCSI_DELAY */
DELAY(1000000 * SCSI_DELAY);
scsibus++;
scsi_probe_bus(scsibus - 1,-1,-1);
}
/*
* Probe the requested scsi bus. It must be already set up.
* -1 requests all set up scsi busses.
* targ and lun optionally narrow the search if not -1
*/
errval
scsi_probe_busses(int bus, int targ, int lun)
{
if (bus == -1) {
for(bus = 0; bus < scsibus; bus++) {
scsi_probe_bus(bus, targ, lun);
}
return 0;
} else {
return scsi_probe_bus(bus, targ, lun);
}
}
/*
* Probe the requested scsi bus. It must be already set up.
* targ and lun optionally narrow the search if not -1
*/
errval
scsi_probe_bus(int bus, int targ, int lun)
{
struct scsibus_data *scsi ;
int maxtarg,mintarg,maxlun,minlun;
struct scsi_link *sc_link_proto;
u_int8 scsi_addr ;
struct scsidevs *bestmatch = NULL;
struct predefined *predef = NULL;
struct scsi_link *sc_link = NULL;
boolean maybe_more;
if ((bus < 0 ) || ( bus >= scsibus)) {
return ENXIO;
}
scsi = scbus_data[bus];
if(!scsi) return ENXIO;
sc_link_proto = scsi->adapter_link;
scsi_addr = sc_link_proto->adapter_targ;
if(targ == -1){
maxtarg = 7;
mintarg = 0;
} else {
if((targ < 0 ) || (targ > 7)) return EINVAL;
maxtarg = mintarg = targ;
}
if(lun == -1){
maxlun = 7;
minlun = 0;
} else {
if((lun < 0 ) || (lun > 7)) return EINVAL;
maxlun = minlun = lun;
}
for ( targ = mintarg;targ <= maxtarg; targ++) {
maybe_more = 0; /* by default only check 1 lun */
if (targ == scsi_addr) {
continue;
}
for ( lun = minlun; lun <= maxlun ;lun++) {
/*
* The spot appears to already have something
* linked in, skip past it. Must be doing a 'reprobe'
*/
if(scsi->sc_link[targ][lun])
{/* don't do this one, but check other luns */
maybe_more = 1;
continue;
}
/*
* If we presently don't have a link block
* then allocate one to use while probing
*/
if (!sc_link) {
sc_link = malloc(sizeof(*sc_link), M_TEMP, M_NOWAIT);
*sc_link = *sc_link_proto; /* struct copy */
sc_link->opennings = 1;
sc_link->device = &probe_switch;
}
sc_link->target = targ;
sc_link->lun = lun;
sc_link->quirks = 0;
predef = scsi_get_predef(sc_link, &maybe_more);
bestmatch = scsi_probedev(sc_link, &maybe_more);
#ifdef NEW_SCSICONF
if (bestmatch) {
sc_link->quirks = bestmatch->quirks;
sc_link->devmodes = bestmatch->devmodes;
} else {
sc_link->quirks = 0;
sc_link->devmodes = NULL;
}
#endif
if ((bestmatch) && (predef)) { /* both exist */
if (bestmatch->attach_rtn
!= predef->attach_rtn) {
printf("Clash in found/expected devices\n");
#if NUK > 0
if(bestmatch == &unknowndev) {
printf("will link in PREDEFINED\n");
(*(predef->attach_rtn)) (sc_link);
} else
#endif /*NUK*/
{
printf("will link in FOUND\n");
(*(bestmatch->attach_rtn)) (sc_link);
}
} else {
(*(bestmatch->attach_rtn)) (sc_link);
}
}
if ((bestmatch) && (!predef)) { /* just FOUND */
(*(bestmatch->attach_rtn)) (sc_link);
}
if ((!bestmatch) && (predef)) { /* just predef */
(*(predef->attach_rtn)) (sc_link);
}
if ((bestmatch) || (predef)) { /* one exists */
scsi->sc_link[targ][lun] = sc_link;
sc_link = NULL; /* it's been used */
}
if (!(maybe_more)) { /* nothing suggests we'll find more */
break; /* nothing here, skip to next targ */
}
/* otherwise something says we should look further */
}
}
if (sc_link) {
free(sc_link, M_TEMP);
}
return 0;
}
/* Return the scsi_link for this device, if any.
*/
struct scsi_link *
scsi_link_get(bus, targ, lun)
int bus;
int targ;
int lun;
{
struct scsibus_data *scsi = scbus_data[bus];
return (scsi) ? scsi->sc_link[targ][lun] : 0;
}
/*
* given a target and lu, check if there is a predefined device for
* that address
*/
struct predefined *
scsi_get_predef(sc_link, maybe_more)
struct scsi_link *sc_link;
boolean *maybe_more;
{
u_int8 unit = sc_link->scsibus;
u_int8 target = sc_link->target;
u_int8 lu = sc_link->lun;
struct scsi_adapter *scsi_adapter = sc_link->adapter;
u_int32 upto, numents;
numents = (sizeof(pd) / sizeof(struct predefined)) - 1;
for (upto = 0; upto < numents; upto++) {
if (pd[upto].scsibus != unit)
continue;
if (pd[upto].dev != target)
continue;
if (pd[upto].lu != lu)
continue;
printf("%s%d targ %d lun %d: <%s> - PRECONFIGURED -\n"
,scsi_adapter->name
,unit
,target
,lu
,pd[upto].devname);
*maybe_more = pd[upto].flags & SC_MORE_LUS;
return (&(pd[upto]));
}
return ((struct predefined *) 0);
}
/*
* given a target and lu, ask the device what
* it is, and find the correct driver table
* entry.
*/
struct scsidevs *
scsi_probedev(sc_link, maybe_more)
boolean *maybe_more;
struct scsi_link *sc_link;
{
u_int8 unit = sc_link->adapter_unit;
u_int8 target = sc_link->target;
u_int8 lu = sc_link->lun;
struct scsi_adapter *scsi_adapter = sc_link->adapter;
struct scsidevs *bestmatch = (struct scsidevs *) 0;
char *dtype = (char *) 0, *desc;
char *qtype;
struct scsi_inquiry_data *inqbuf;
u_int32 len, qualifier, type;
boolean remov;
char manu[32];
char model[32];
char version[32];
int z;
inqbuf = &sc_link->inqbuf;
bzero(inqbuf, sizeof(*inqbuf));
/*
* Ask the device what it is
*/
#ifdef SCSIDEBUG
if ((target == DEBUGTARG) && (lu == DEBUGLUN))
sc_link->flags |= (DEBUGLEVEL);
else
sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2 | SDEV_DB3 | SDEV_DB4);
#endif /* SCSIDEBUG */
/* catch unit attn */
scsi_test_unit_ready(sc_link, SCSI_NOSLEEP | SCSI_NOMASK | SCSI_SILENT);
#ifdef DOUBTFULL
switch (scsi_test_unit_ready(sc_link, SCSI_NOSLEEP | SCSI_NOMASK | SCSI_SILENT)) {
case 0: /* said it WAS ready */
case EBUSY: /* replied 'NOT READY' but WAS present, continue */
case ENXIO:
break;
case EIO: /* device timed out */
case EINVAL: /* Lun not supported */
default:
return (struct scsidevs *) 0;
}
#endif /*DOUBTFULL*/
#ifdef SCSI_2_DEF
/* some devices need to be told to go to SCSI2 */
/* However some just explode if you tell them this.. leave it out */
scsi_change_def(sc_link, SCSI_NOSLEEP | SCSI_NOMASK | SCSI_SILENT);
#endif /*SCSI_2_DEF */
/* Now go ask the device all about itself */
if (scsi_inquire(sc_link, inqbuf, SCSI_NOSLEEP | SCSI_NOMASK) != 0) {
return (struct scsidevs *) 0;
}
/*
* note what BASIC type of device it is
*/
type = inqbuf->device & SID_TYPE;
qualifier = inqbuf->device & SID_QUAL;
remov = inqbuf->dev_qual2 & SID_REMOVABLE;
/*
* Any device qualifier that has the top bit set (qualifier&4 != 0)
* is vendor specific and won't match in this switch.
*/
switch ((int)qualifier) {
case SID_QUAL_LU_OK:
qtype = "";
break;
case SID_QUAL_LU_OFFLINE:
qtype = ", Unit not Connected!";
break;
case SID_QUAL_RSVD:
qtype = ", Reserved Peripheral Qualifier!";
*maybe_more = 1;
return (struct scsidevs *) 0;
break;
case SID_QUAL_BAD_LU:
/*
* Check for a non-existent unit. If the device is returning
* this much, then we must set the flag that has
* the searchers keep looking on other luns.
*/
qtype = ", The Target can't support this Unit!";
*maybe_more = 1;
return (struct scsidevs *) 0;
default:
dtype = "vendor specific";
qtype = "";
*maybe_more = 1;
break;
}
if (dtype == 0) {
switch ((int)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_READONLY:
dtype = "readonly";
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_NODEVICE:
*maybe_more = 1;
return (struct scsidevs *) 0;
default:
dtype = "unknown";
break;
}
}
/*
* Then if it's advanced enough, more detailed
* information
*/
if ((inqbuf->version & SID_ANSII) > 0) {
if ((len = inqbuf->additional_length
+ ((char *) inqbuf->unused
- (char *) inqbuf))
> (sizeof(struct scsi_inquiry_data) - 1))
len = sizeof(struct scsi_inquiry_data) - 1;
desc = inqbuf->vendor;
desc[len - (desc - (char *) inqbuf)] = 0;
strncpy(manu, inqbuf->vendor, 8);
strncpy(model, inqbuf->product, 16);
strncpy(version, inqbuf->revision, 4);
for(z = 0; z < 4; z++) {
if (version[z]<' ') version[z]='?';
}
} else
/*
* If not advanced enough, use default values
*/
{
desc = "early protocol device";
strncpy(manu, "unknown", 8);
strncpy(model, "unknown", 16);
strncpy(version, "????", 4);
}
manu[8] = 0;
model[16] = 0;
version[4] = 0;
printf("%s%d targ %d lun %d: type %ld(%s) %s SCSI%d\n"
,scsi_adapter->name
,unit
,target
,lu
,type
,dtype
,remov ? "removable" : "fixed"
,inqbuf->version & SID_ANSII
);
printf("%s%d targ %d lun %d: <%s%s%s>\n"
,scsi_adapter->name
,unit
,target
,lu
,manu
,model
,version
);
if (qtype[0]) {
printf("%s%d targ %d lun %d: qualifier %ld(%s)\n"
,scsi_adapter->name
,unit
,target
,lu
,qualifier
,qtype
);
}
/*
* Try make as good a match as possible with
* available sub drivers
*/
bestmatch = (selectdev(
qualifier, type, remov ? T_REMOV : T_FIXED, manu, model, version));
if ((bestmatch) && (bestmatch->flags & SC_MORE_LUS)) {
*maybe_more = 1;
}
return (bestmatch);
}
/* Try to find the major number for a device during attach.
*/
dev_t
scsi_dev_lookup(d_open)
int (*d_open)();
{
int i;
dev_t d = NODEV;
for (i = 0; i < nchrdev; i++)
if (cdevsw[i].d_open == d_open)
{
d = makedev(i, 0);
break;
}
return d;
}
#ifdef NEW_SCSICONF
/*
* Compare name with pattern, return 0 on match.
* Short pattern matches trailing blanks in name,
* wildcard '*' in pattern matches rest of name
*/
int
match(pattern, name)
char *pattern;
char *name;
{
char c;
while (c = *pattern++)
{
if (c == '*') return 0;
if (c != *name++) return 1;
}
while (c = *name++)
{
if (c != ' ') return 1;
}
return 0;
}
#endif
/*
* Try make as good a match as possible with
* available sub drivers
*/
struct scsidevs *
selectdev(qualifier, type, remov, manu, model, rev)
u_int32 qualifier, type;
boolean remov;
char *manu, *model, *rev;
{
#ifdef NEW_SCSICONF
struct scsidevs *bestmatch = NULL;
struct scsidevs *thisentry;
type |= qualifier; /* why? */
for ( thisentry = knowndevs; thisentry->manufacturer; thisentry++ )
{
if (type != thisentry->type) {
continue;
}
if (remov != thisentry->removable) {
continue;
}
if (thisentry->flags & SC_SHOWME)
printf("\n%s-\n%s-", thisentry->manufacturer, manu);
if (match(thisentry->manufacturer, manu)) {
continue;
}
if (thisentry->flags & SC_SHOWME)
printf("\n%s-\n%s-", thisentry->model, model);
if (match(thisentry->model, model)) {
continue;
}
if (thisentry->flags & SC_SHOWME)
printf("\n%s-\n%s-", thisentry->version, rev);
if (match(thisentry->version, rev)) {
continue;
}
bestmatch = thisentry;
break;
}
#else
u_int32 numents = (sizeof(knowndevs) / sizeof(struct scsidevs)) - 1;
u_int32 count = 0;
u_int32 bestmatches = 0;
struct scsidevs *bestmatch = (struct scsidevs *) 0;
struct scsidevs *thisentry = knowndevs;
type |= qualifier; /* why? */
thisentry--;
while (count++ < numents) {
thisentry++;
if (type != thisentry->type) {
continue;
}
if (bestmatches < 1) {
bestmatches = 1;
bestmatch = thisentry;
}
if (remov != thisentry->removable) {
continue;
}
if (bestmatches < 2) {
bestmatches = 2;
bestmatch = thisentry;
}
if (thisentry->flags & SC_SHOWME)
printf("\n%s-\n%s-", thisentry->manufacturer, manu);
if (strcmp(thisentry->manufacturer, manu)) {
continue;
}
if (bestmatches < 3) {
bestmatches = 3;
bestmatch = thisentry;
}
if (thisentry->flags & SC_SHOWME)
printf("\n%s-\n%s-", thisentry->model, model);
if (strcmp(thisentry->model, model)) {
continue;
}
if (bestmatches < 4) {
bestmatches = 4;
bestmatch = thisentry;
}
if (thisentry->flags & SC_SHOWME)
printf("\n%s-\n%s-", thisentry->version, rev);
if (strcmp(thisentry->version, rev)) {
continue;
}
if (bestmatches < 5) {
bestmatches = 5;
bestmatch = thisentry;
break;
}
}
#endif /* NEW_SCSICONF */
if (bestmatch == (struct scsidevs *) 0) {
#if NUK > 0
bestmatch = &unknowndev;
#else
printf("No explicit device driver match.\n");
#endif
}
return (bestmatch);
}
int
scsi_externalize(struct scsi_link *sl, void *userp, size_t *lenp)
{
if(*lenp < sizeof *sl)
return ENOMEM;
*lenp -= sizeof *sl;
return copyout(sl, userp, sizeof *sl);
}
Reference in New Issue View Git Blame Copy Permalink