700 lines
16 KiB
C
700 lines
16 KiB
C
/*
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* 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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*
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* $Id: scsiconf.c,v 2.6 93/10/24 12:43:51 julian Exp Locker: julian $
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include "st.h"
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#include "sd.h"
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#include "ch.h"
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#include "cd.h"
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#include "uk.h"
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#include "su.h"
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#ifndef NSCBUS
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#define NSCBUS 8
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#endif /* NSCBUS */
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#include <scsi/scsi_all.h>
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#include <scsi/scsiconf.h>
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#ifdef TFS
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#include "bll.h"
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#include "cals.h"
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#include "kil.h"
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#include "scan.h"
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#else /* TFS */
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#define NBLL 0
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#define NCALS 0
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#define NKIL 0
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#define NSCAN 0
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#endif /* TFS */
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#if NSD > 0
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extern sdattach();
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#endif /* NSD */
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#if NST > 0
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extern stattach();
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#endif /* NST */
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#if NCH > 0
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extern chattach();
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#endif /* NCH */
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#if NCD > 0
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extern cdattach();
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#endif /* NCD */
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#if NBLL > 0
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extern bllattach();
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#endif /* NBLL */
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#if NCALS > 0
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extern calsattach();
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#endif /* NCALS */
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#if NKIL > 0
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extern kil_attach();
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#endif /* NKIL */
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#if NUK > 0
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extern ukattach();
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#endif /* NUK */
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/*
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* One of these is allocated and filled in for each scsi bus.
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* it holds pointers to allow the scsi bus to get to the driver
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* That is running each LUN on the bus
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* it also has a template entry which is the prototype struct
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* supplied by the adapter driver, this is used to initialise
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* the others, before they have the rest of the fields filled in
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*/
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struct scsibus_data *scbus_data[NSCBUS];
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/*
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* The structure of pre-configured devices that might be turned
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* off and therefore may not show up
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*/
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struct predefined {
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u_char scsibus;
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u_char dev;
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u_char lu;
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errval(*attach_rtn) ();
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char *devname;
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char flags;
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} pd[] =
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{
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#ifdef EXAMPLE_PREDEFINE
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#if NSD > 0
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{
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0, 0, 0, sdattach, "sd", 0
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}, /* define a disk at scsibus=0 dev=0 lu=0 */
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#endif /* NSD */
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#endif /* EXAMPLE_PREDEFINE */
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{
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0, 9, 9
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} /*illegal dummy end entry */
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};
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/*
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* The structure of known drivers for autoconfiguration
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*/
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struct scsidevs {
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u_int32 type;
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boolean removable;
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char *manufacturer;
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char *model;
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char *version;
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errval(*attach_rtn) ();
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char *devname;
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char flags; /* 1 show my comparisons during boot(debug) */
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};
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#define SC_SHOWME 0x01
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#define SC_ONE_LU 0x00
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#define SC_MORE_LUS 0x02
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#if NUK > 0
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static struct scsidevs unknowndev = {
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-1, 0, "standard", "any"
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,"any", ukattach, "uk", SC_MORE_LUS
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};
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#endif /*NUK*/
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static struct scsidevs knowndevs[] =
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{
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#if NSD > 0
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{
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T_DIRECT, T_FIXED, "standard", "any"
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,"any", sdattach, "sd", SC_ONE_LU
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},
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{
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T_DIRECT, T_FIXED, "MAXTOR ", "XT-4170S "
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,"B5A ", sdattach, "mx1", SC_ONE_LU
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},
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#endif /* NSD */
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#if NST > 0
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{
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T_SEQUENTIAL, T_REMOV, "standard", "any"
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,"any", stattach, "st", SC_ONE_LU
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},
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#endif /* NST */
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#if NCALS > 0
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{
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T_PROCESSOR, T_FIXED, "standard", "any"
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,"any", calsattach, "cals", SC_MORE_LUS
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},
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#endif /* NCALS */
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#if NCH > 0
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{
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T_CHANGER, T_REMOV, "standard", "any"
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,"any", chattach, "ch", SC_ONE_LU
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},
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#endif /* NCH */
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#if NCD > 0
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#ifndef UKTEST /* make cdroms unrecognised to test the uk driver */
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{
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T_READONLY, T_REMOV, "SONY ", "CD-ROM CDU-8012 "
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,"3.1a", cdattach, "cd", SC_ONE_LU
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},
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{
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T_READONLY, T_REMOV, "PIONEER ", "CD-ROM DRM-600 "
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,"any", cdattach, "cd", SC_MORE_LUS
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},
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#endif
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#endif /* NCD */
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#if NBLL > 0
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{
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T_PROCESSOR, T_FIXED, "AEG ", "READER "
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,"V1.0", bllattach, "bll", SC_MORE_LUS
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},
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#endif /* NBLL */
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#if NKIL > 0
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{
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T_SCANNER, T_FIXED, "KODAK ", "IL Scanner 900 "
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,"any", kil_attach, "kil", SC_ONE_LU
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},
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#endif /* NKIL */
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{
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0
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}
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};
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/*
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* Declarations
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*/
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struct predefined *scsi_get_predef();
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struct scsidevs *scsi_probedev();
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struct scsidevs *selectdev();
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errval scsi_probe_bus __P((int bus, int targ, int lun));
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struct scsi_device probe_switch =
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{
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NULL,
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NULL,
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NULL,
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NULL,
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"probe",
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0,
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{ 0, 0 }
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};
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/*
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* controls debug level within the scsi subsystem -
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* see scsiconf.h for values
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*/
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int32 scsibus = 0x0; /* This is the Nth scsibus we've seen */
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/*
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* The routine called by the adapter boards to get all their
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* devices configured in.
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*/
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void
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scsi_attachdevs(sc_link_proto)
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struct scsi_link *sc_link_proto;
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{
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if(scsibus >= NSCBUS) {
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printf("too many scsi busses, reconfigure the kernel\n");
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return;
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}
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sc_link_proto->scsibus = scsibus;
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scbus_data[scsibus] = malloc(sizeof(struct scsibus_data), M_TEMP, M_NOWAIT);
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if(!scbus_data[scsibus]) {
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panic("scsi_attachdevs: malloc\n");
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}
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bzero(scbus_data[scsibus], sizeof(struct scsibus_data));
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scbus_data[scsibus]->adapter_link = sc_link_proto;
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#if defined(SCSI_DELAY) && SCSI_DELAY > 2
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printf("%s%d waiting for scsi devices to settle\n",
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sc_link_proto->adapter->name, sc_link_proto->adapter_unit);
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#else /* SCSI_DELAY > 2 */
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#undef SCSI_DELAY
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#define SCSI_DELAY 2
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#endif /* SCSI_DELAY */
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DELAY(1000000 * SCSI_DELAY);
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scsibus++;
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scsi_probe_bus(scsibus - 1,-1,-1);
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}
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/*
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* Probe the requested scsi bus. It must be already set up.
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* -1 requests all set up scsi busses.
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* targ and lun optionally narrow the search if not -1
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*/
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errval
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scsi_probe_busses(int bus, int targ, int lun)
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{
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if (bus == -1) {
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for(bus = 0; bus < scsibus; bus++) {
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scsi_probe_bus(bus, targ, lun);
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}
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return 0;
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} else {
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return scsi_probe_bus(bus, targ, lun);
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}
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}
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/*
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* Probe the requested scsi bus. It must be already set up.
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* targ and lun optionally narrow the search if not -1
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*/
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errval
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scsi_probe_bus(int bus, int targ, int lun)
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{
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struct scsibus_data *scsi ;
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int maxtarg,mintarg,maxlun,minlun;
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struct scsi_link *sc_link_proto;
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u_int8 scsi_addr ;
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struct scsidevs *bestmatch = NULL;
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struct predefined *predef = NULL;
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struct scsi_link *sc_link = NULL;
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boolean maybe_more;
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if ((bus < 0 ) || ( bus >= scsibus)) {
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return ENXIO;
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}
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scsi = scbus_data[bus];
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if(!scsi) return ENXIO;
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sc_link_proto = scsi->adapter_link;
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scsi_addr = sc_link_proto->adapter_targ;
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if(targ == -1){
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maxtarg = 7;
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mintarg = 0;
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} else {
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if((targ < 0 ) || (targ > 7)) return EINVAL;
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maxtarg = mintarg = targ;
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}
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if(lun == -1){
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maxlun = 7;
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minlun = 0;
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} else {
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if((lun < 0 ) || (lun > 7)) return EINVAL;
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maxlun = minlun = lun;
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}
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for ( targ = mintarg;targ <= maxtarg; targ++) {
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maybe_more = 0; /* by default only check 1 lun */
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if (targ == scsi_addr) {
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continue;
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}
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for ( lun = minlun; lun <= maxlun ;lun++) {
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/*
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* The spot appears to already have something
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* linked in, skip past it. Must be doing a 'reprobe'
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*/
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if(scsi->sc_link[targ][lun])
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{/* don't do this one, but check other luns */
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maybe_more = 1;
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continue;
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}
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/*
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* If we presently don't have a link block
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* then allocate one to use while probing
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*/
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if (!sc_link) {
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sc_link = malloc(sizeof(*sc_link), M_TEMP, M_NOWAIT);
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*sc_link = *sc_link_proto; /* struct copy */
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sc_link->opennings = 1;
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sc_link->device = &probe_switch;
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}
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sc_link->target = targ;
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sc_link->lun = lun;
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predef = scsi_get_predef(sc_link, &maybe_more);
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bestmatch = scsi_probedev(sc_link, &maybe_more);
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if ((bestmatch) && (predef)) { /* both exist */
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if (bestmatch->attach_rtn
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!= predef->attach_rtn) {
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printf("Clash in found/expected devices\n");
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#if NUK > 0
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if(bestmatch == &unknowndev) {
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printf("will link in PREDEFINED\n");
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(*(predef->attach_rtn)) (sc_link);
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} else
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#endif /*NUK*/
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{
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printf("will link in FOUND\n");
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(*(bestmatch->attach_rtn)) (sc_link);
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}
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} else {
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(*(bestmatch->attach_rtn)) (sc_link);
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}
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}
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if ((bestmatch) && (!predef)) { /* just FOUND */
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(*(bestmatch->attach_rtn)) (sc_link);
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}
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if ((!bestmatch) && (predef)) { /* just predef */
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(*(predef->attach_rtn)) (sc_link);
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}
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if ((bestmatch) || (predef)) { /* one exists */
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scsi->sc_link[targ][lun] = sc_link;
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sc_link = NULL; /* it's been used */
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}
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if (!(maybe_more)) { /* nothing suggests we'll find more */
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break; /* nothing here, skip to next targ */
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}
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/* otherwise something says we should look further */
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}
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}
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if (sc_link) {
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free(sc_link, M_TEMP);
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}
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return 0;
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}
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/*
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* given a target and lu, check if there is a predefined device for
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* that address
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*/
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struct predefined *
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scsi_get_predef(sc_link, maybe_more)
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struct scsi_link *sc_link;
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boolean *maybe_more;
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{
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u_int8 unit = sc_link->scsibus;
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u_int8 target = sc_link->target;
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u_int8 lu = sc_link->lun;
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struct scsi_adapter *scsi_adapter = sc_link->adapter;
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u_int32 upto, numents;
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numents = (sizeof(pd) / sizeof(struct predefined)) - 1;
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for (upto = 0; upto < numents; upto++) {
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if (pd[upto].scsibus != unit)
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continue;
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if (pd[upto].dev != target)
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continue;
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if (pd[upto].lu != lu)
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continue;
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printf("%s%d targ %d lun %d: <%s> - PRECONFIGURED -\n"
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,scsi_adapter->name
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,unit
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,target
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,lu
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,pd[upto].devname);
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*maybe_more = pd[upto].flags & SC_MORE_LUS;
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return (&(pd[upto]));
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}
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return ((struct predefined *) 0);
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}
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/*
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* given a target and lu, ask the device what
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* it is, and find the correct driver table
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* entry.
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*/
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struct scsidevs *
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scsi_probedev(sc_link, maybe_more)
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boolean *maybe_more;
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struct scsi_link *sc_link;
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{
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u_int8 unit = sc_link->adapter_unit;
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u_int8 target = sc_link->target;
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u_int8 lu = sc_link->lun;
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struct scsi_adapter *scsi_adapter = sc_link->adapter;
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struct scsidevs *bestmatch = (struct scsidevs *) 0;
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char *dtype = (char *) 0, *desc;
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char *qtype;
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static struct scsi_inquiry_data inqbuf;
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u_int32 len, qualifier, type;
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boolean remov;
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char manu[32];
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char model[32];
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char version[32];
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bzero(&inqbuf, sizeof(inqbuf));
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/*
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* Ask the device what it is
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*/
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#ifdef SCSIDEBUG
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if ((target == DEBUGTARG) && (lu == DEBUGLUN))
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sc_link->flags |= (DEBUGLEVEL);
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else
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sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2 | SDEV_DB3 | SDEV_DB4);
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#endif /* SCSIDEBUG */
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/* catch unit attn */
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scsi_test_unit_ready(sc_link, SCSI_NOSLEEP | SCSI_NOMASK | SCSI_SILENT);
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#ifdef DOUBTFULL
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switch (scsi_test_unit_ready(sc_link, SCSI_NOSLEEP | SCSI_NOMASK | SCSI_SILENT)) {
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case 0: /* said it WAS ready */
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case EBUSY: /* replied 'NOT READY' but WAS present, continue */
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case ENXIO:
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break;
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case EIO: /* device timed out */
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case EINVAL: /* Lun not supported */
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default:
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return (struct scsidevs *) 0;
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}
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#endif /*DOUBTFULL*/
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#ifdef SCSI_2_DEF
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/* some devices need to be told to go to SCSI2 */
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/* However some just explode if you tell them this.. leave it out */
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scsi_change_def(sc_link, SCSI_NOSLEEP | SCSI_NOMASK | SCSI_SILENT);
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#endif /*SCSI_2_DEF */
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/* Now go ask the device all about itself */
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if (scsi_inquire(sc_link, &inqbuf, SCSI_NOSLEEP | SCSI_NOMASK) != 0) {
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return (struct scsidevs *) 0;
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}
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/*
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* note what BASIC type of device it is
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*/
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type = inqbuf.device & SID_TYPE;
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qualifier = inqbuf.device & SID_QUAL;
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remov = inqbuf.dev_qual2 & SID_REMOVABLE;
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/*
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* Any device qualifier that has the top bit set (qualifier&4 != 0)
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* is vendor specific and won't match in this switch.
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*/
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switch (qualifier) {
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case SID_QUAL_LU_OK:
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qtype = "";
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break;
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case SID_QUAL_LU_OFFLINE:
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qtype = ", Unit not Connected!";
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break;
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case SID_QUAL_RSVD:
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qtype = ", Reserved Peripheral Qualifier!";
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*maybe_more = 1;
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return (struct scsidevs *) 0;
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break;
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case SID_QUAL_BAD_LU:
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/*
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* Check for a non-existent unit. If the device is returning
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* this much, then we must set the flag that has
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* the searchers keep looking on other luns.
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*/
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qtype = ", The Target can't support this Unit!";
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*maybe_more = 1;
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return (struct scsidevs *) 0;
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default:
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dtype = "vendor specific";
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qtype = "";
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*maybe_more = 1;
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break;
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}
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if (dtype == 0) {
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switch (type) {
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case T_DIRECT:
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dtype = "direct";
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break;
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case T_SEQUENTIAL:
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dtype = "sequential";
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break;
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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);
|
|
manu[8] = 0;
|
|
strncpy(model, inqbuf.product, 16);
|
|
model[16] = 0;
|
|
strncpy(version, inqbuf.revision, 4);
|
|
version[4] = 0;
|
|
} else
|
|
/*
|
|
* If not advanced enough, use default values
|
|
*/
|
|
{
|
|
desc = "early protocol device";
|
|
strncpy(manu, "unknown", 8);
|
|
strncpy(model, "unknown", 16);
|
|
strncpy(version, "????", 4);
|
|
}
|
|
printf("%s%d targ %d lun %d: type %d(%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 %d(%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 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;
|
|
{
|
|
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;
|
|
}
|
|
}
|
|
if (bestmatch == (struct scsidevs *) 0) {
|
|
#if NUK > 0
|
|
bestmatch = &unknowndev;
|
|
#else
|
|
printf("No explicit device driver match.\n");
|
|
#endif
|
|
}
|
|
return (bestmatch);
|
|
}
|