1348 lines
32 KiB
C
1348 lines
32 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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* New configuration setup: dufault@hda.com
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*
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* $Id: scsiconf.c,v 1.54 1996/02/17 23:59:24 se Exp $
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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/stat.h>
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#include <sys/malloc.h>
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#include <sys/sysctl.h>
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#include <sys/devconf.h>
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#include <sys/conf.h>
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#include <machine/clock.h>
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#include <machine/cpu.h> /* XXX For bootverbose (funny place) */
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#include "scbus.h"
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#include "sd.h"
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#include "st.h"
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#include "cd.h"
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#include "ch.h"
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#include "od.h"
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#include "worm.h"
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#include "su.h"
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#include "sctarg.h"
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#include <scsi/scsi_all.h>
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#include <scsi/scsiconf.h>
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static struct extend_array *extend_new __P((void));
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static void extend_release __P((struct extend_array *ea, int index));
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static void *extend_set __P((struct extend_array *ea, int index, void *value));
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/*
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* XXX SCSI_DEVICE_ENTRIES() generates extern switches but it should
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* generate static switches except for this. Separate macros are
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* probably required for the extern and static parts.
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*/
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extern struct scsi_device uk_switch;
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/***********************************************************************
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* Extensible arrays: Use a realloc like implementation to permit
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* the arrays to be extend. These are set up to be moved out
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* of this file if needed elsewhere.
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*/
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struct extend_array
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{
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int nelem;
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void **ps;
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};
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static void make_readable __P((char *to, char *from, size_t n));
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static int match __P((char *pattern, char *name));
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static int scsi_bus_conf __P((struct scsi_link *sc_link_proto));
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static void *
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extend_alloc(size_t s)
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{
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void *p = malloc(s, M_DEVBUF, M_NOWAIT);
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if (!p)
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panic("extend_alloc: malloc failed.");
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return p;
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}
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static void
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extend_free(void *p) { free(p, M_DEVBUF); }
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/* EXTEND_CHUNK: Number of extend slots to allocate whenever we need a new
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* one.
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*/
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#ifndef EXTEND_CHUNK
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#define EXTEND_CHUNK 8
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#endif
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static struct extend_array *
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extend_new(void)
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{
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struct extend_array *p = extend_alloc(sizeof(*p));
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if (p) {
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p->nelem = 0;
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p->ps = 0;
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}
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return p;
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}
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static void *
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extend_set(struct extend_array *ea, int index, void *value)
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{
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if (index >= ea->nelem) {
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void **space;
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space = extend_alloc(sizeof(void *) * (index + EXTEND_CHUNK));
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bzero(space, sizeof(void *) * (index + EXTEND_CHUNK));
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/* Make sure we have something to copy before we copy it */
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if (ea->nelem) {
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bcopy(ea->ps, space, sizeof(void *) * ea->nelem);
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extend_free(ea->ps);
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}
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ea->ps = space;
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ea->nelem = index + EXTEND_CHUNK;
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}
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if (ea->ps[index]) {
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printf("extend_set: entry %d already has storage.\n", index);
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return 0;
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}
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else
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ea->ps[index] = value;
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return value;
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}
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void *
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extend_get(struct extend_array *ea, int index)
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{
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if (ea == NULL || index >= ea->nelem || index < 0)
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return NULL;
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return ea->ps[index];
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}
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static void
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extend_release(struct extend_array *ea, int index)
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{
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void *p = extend_get(ea, index);
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if (p) {
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ea->ps[index] = 0;
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}
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}
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/***********************************************************************
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* This extend_array holds an array of "scsibus_data" pointers.
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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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static struct extend_array *scbusses;
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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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u_int32 driver; /* normally the same as 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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char *devname;
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char flags; /* 1 show my comparisons during boot(debug) */
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u_int16 quirks;
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void *devmodes;
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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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static struct scsidevs unknowndev =
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{
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T_UNKNOWN, T_UNKNOWN, 0, "*", "*", "*",
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"uk", SC_MORE_LUS
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};
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static st_modes mode_tandberg3600 =
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{
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{0, 0, 0}, /* minor 0,1,2,3 */
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{0, ST_Q_FORCE_VAR_MODE, QIC_525}, /* minor 4,5,6,7 */
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{0, 0, QIC_150}, /* minor 8,9,10,11 */
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{0, 0, QIC_120} /* minor 12,13,14,15 */
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};
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static st_modes mode_tandberg4200 =
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{
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{0, 0, 0}, /* minor 0,1,2,3 */
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{0, ST_Q_FORCE_VAR_MODE, 0}, /* minor 4,5,6,7 */
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{0, 0, QIC_150}, /* minor 8,9,10,11 */
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{0, 0, QIC_120} /* minor 12,13,14,15 */
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};
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static st_modes mode_archive2525 =
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{
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{0, ST_Q_SNS_HLP, 0}, /* minor 0,1,2,3 */
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{0, ST_Q_SNS_HLP, QIC_525}, /* minor 4,5,6,7 */
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{0, 0, QIC_150}, /* minor 8,9,10,11 */
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{0, 0, QIC_120} /* minor 12,13,14,15 */
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};
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static st_modes mode_archive150 =
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{
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{0, 0, 0}, /* minor 0,1,2,3 */
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{0, 0, QIC_150}, /* minor 4,5,6,7 */
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{0, 0, QIC_120}, /* minor 8,9,10,11 */
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{0, 0, QIC_24} /* minor 12,13,14,15 */
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};
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static st_modes mode_wangtek5525 =
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{
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{0, 0, 0}, /* minor 0,1,2,3 */
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{0, ST_Q_BLKSIZ, QIC_525}, /* minor 4,5,6,7 */
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{0, 0, QIC_150}, /* minor 8,9,10,11 */
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{0, 0, QIC_120} /* minor 12,13,14,15 */
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};
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static st_modes mode_wangdat1300 =
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{
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{0, 0, 0}, /* minor 0,1,2,3 */
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{512, ST_Q_FORCE_FIXED_MODE, DDS}, /* minor 4,5,6,7 */
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{1024, ST_Q_FORCE_FIXED_MODE, DDS}, /* minor 8,9,10,11 */
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{0, ST_Q_FORCE_VAR_MODE, DDS} /* minor 12,13,14,15 */
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};
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static st_modes mode_unktape =
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{
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{0, 0, 0}, /* minor 0,1,2,3 */
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{512, ST_Q_FORCE_FIXED_MODE, QIC_24}, /* minor 4,5,6,7 */
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{0, ST_Q_FORCE_VAR_MODE, HALFINCH_1600}, /* minor 8,9,10,11 */
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{0, ST_Q_FORCE_VAR_MODE, HALFINCH_6250} /* minor 12,13,14,15 */
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};
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static struct scsidevs knowndevs[] =
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{
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/* od's must be probed before sd's since some of them identify as T_DIRECT */
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#if NOD > 0
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{
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T_OPTICAL, T_OPTICAL, T_REMOV, "MATSHITA", "PD-1 LF-1000", "*",
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"od", SC_MORE_LUS
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},
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{
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T_DIRECT, T_OPTICAL, T_REMOV, "SONY", "SMO-*", "*",
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"od", SC_MORE_LUS
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},
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{
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T_OPTICAL, T_OPTICAL, T_REMOV, "*", "*", "*",
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"od", SC_ONE_LU
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},
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#endif /* NOD */
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#if NSD > 0
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{
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T_DIRECT, T_DIRECT, T_FIXED, "EMULEX", "MD21*" , "*",
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"sd", SC_MORE_LUS
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},
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{
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T_DIRECT, T_DIRECT, T_FIXED, "*", "*", "*",
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"sd", 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_SEQUENTIAL, T_REMOV, "TANDBERG", " TDC 3600", "*",
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"st", SC_ONE_LU, ST_Q_NEEDS_PAGE_0, mode_tandberg3600
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},
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{
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T_SEQUENTIAL, T_SEQUENTIAL, T_REMOV, "TANDBERG", " TDC 42*", "*",
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"st", SC_ONE_LU, ST_Q_SNS_HLP|ST_Q_NO_1024, mode_tandberg4200
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},
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{
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T_SEQUENTIAL, T_SEQUENTIAL, T_REMOV, "ARCHIVE", "VIPER 2525*", "-005",
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"st", SC_ONE_LU, 0, mode_archive2525
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},
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{
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T_SEQUENTIAL, T_SEQUENTIAL, T_REMOV, "ARCHIVE", "VIPER 150", "*",
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"st", SC_ONE_LU, ST_Q_NEEDS_PAGE_0, mode_archive150
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},
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{
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T_SEQUENTIAL, T_SEQUENTIAL, T_REMOV, "WANGTEK", "5525ES*", "*",
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"st", SC_ONE_LU, 0, mode_wangtek5525
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},
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{
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T_SEQUENTIAL, T_SEQUENTIAL, T_REMOV, "WangDAT", "Model 1300", "*",
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"st", SC_ONE_LU, 0, mode_wangdat1300
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},
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{
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T_SEQUENTIAL, T_SEQUENTIAL, T_REMOV, "*", "*", "*",
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"st", SC_ONE_LU, 0, mode_unktape
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},
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#endif /* NST */
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#if NCH > 0
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{
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T_CHANGER, T_CHANGER, T_REMOV, "*", "*", "*",
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"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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* CDU-8003A aka Apple CDROM-300.
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*/
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{
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T_READONLY, T_READONLY, T_REMOV, "SONY", "CD-ROM CDU-8003A", "1.9a",
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"cd", SC_ONE_LU
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},
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{
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T_READONLY, T_READONLY, T_REMOV, "SONY", "CD-ROM CDU-8012", "3.1a",
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"cd", SC_ONE_LU
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},
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{
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T_READONLY, T_READONLY, T_REMOV, "PIONEER", "CD-ROM DRM-6??*" ,"*",
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"cd", SC_MORE_LUS, CD_Q_NO_TOUCH
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},
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{
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T_READONLY, T_READONLY, T_REMOV, "NRC", "MBR-7*" ,"*",
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"cd", SC_MORE_LUS
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},
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{
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T_READONLY, T_READONLY, T_REMOV, "CHINON", "CD-ROM CDS-535","*",
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"cd", SC_ONE_LU
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},
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/*
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* Note: My drive with v1.0 firmware "forgets" to generate scsi parity
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* when answering probes.. :-( EVIL!! You need to disable scsi parity
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* checking in order to find out that it answers to all 7 LUNS. :-(
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* -Peter
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*/
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{
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T_READONLY, T_READONLY, T_REMOV, "NEC", "CD-ROM DRIVE:55","*",
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"cd", SC_ONE_LU
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},
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/*
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* Same with the OEM version of this drive (1.0 firmware).
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* -Paul
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*/
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{
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T_READONLY, T_READONLY, T_REMOV, "NEC", "CD-ROM DRIVE:210","*",
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"cd", SC_ONE_LU
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},
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/*
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* Doobe-doo-be doooo
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* -Mary
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*/
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#endif /* !UKTEST */
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#endif /* NCD */
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#if NWORM > 0
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{
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T_READONLY, T_WORM, T_REMOV, "HP", "C4324/C4325", "*",
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"worm", SC_ONE_LU
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},
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/*
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* The Plasmon's are dual-faced: they appear as T_WORM if the
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* drive is empty, or a CD-R medium is in the drive, and they
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* announce theirselves as T_READONLY if a CD-ROM (or fixated
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* CD-R) is there. This record catches the latter case, while
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* the former one falls under the terms of the generic T_WORM
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* below.
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*/
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{
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T_READONLY, T_WORM, T_REMOV, "PLASMON", "RF41*", "*",
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"worm", SC_ONE_LU
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},
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{
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T_WORM, T_WORM, T_REMOV, "*", "*", "*",
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"worm", SC_ONE_LU
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},
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#endif /* NWORM */
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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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static struct scsidevs *scsi_probedev __P((struct scsi_link *sc_link,
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boolean *maybe_more, int *type_p));
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static struct scsidevs *scsi_selectdev __P((u_int32 qualifier, u_int32 type,
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boolean remov, char *manu, char *model,
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char *rev));
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/* XXX dufault@hda.com
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* This scsi_device doesn't have the scsi_data_size.
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* This is used during probe.
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*/
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static 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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NULL,
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0
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};
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/*
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* XXX
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* This is BOGUS.
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* We do this because it was easier than adding the requisite information
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* to the scsi_link structure and modifying everything to use that.
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* Someday, we will do just that, and users will be able to nail down their
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* preferred SCSI ids.
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*
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*/
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struct kern_devconf kdc_scbus0 = {
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0, 0, 0, /* filled in by dev_attach */
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"scbus", 0, MDDC_SCBUS,
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0, 0, 0, 0, /* no external data */
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0, /* no parent */
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0, /* no parentdata */
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DC_BUSY, /* busses are always busy */
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"SCSI subsystem"
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};
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static int free_bus; /* First bus not wired down */
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static struct scsi_device *device_list;
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static int next_free_type = T_NTYPES;
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/* Register new functions at the head of the list. That allows
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* you to replace a standard driver with a new one.
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*
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* You can't register the exact device (the same in memory structure)
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* more than once - the list links are part of the structure. That is
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* prevented.
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*
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* Custom devices should always be registered as type "-1". Then
|
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* the next available type number will be allocated for it.
|
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*
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* Be careful not to register a type as 0 unless you really mean to
|
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* replace the disk driver.
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*
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* This is usually called only by the "device_init" function generated
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* automatically in the SCSI_DEVICE_ENTRIES macro.
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*/
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void
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scsi_device_register(struct scsi_device *sd)
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{
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/* Not only is it pointless to add the same device more than once
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* but it will also screw up the list.
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*/
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struct scsi_device *is_there;
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for (is_there = device_list; is_there; is_there = is_there->next)
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if (is_there == sd)
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return;
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if (sd->type == -1)
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sd->type = next_free_type++;
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sd->next = device_list;
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device_list = sd;
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if (sd->links == 0)
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sd->links = extend_new();
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}
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|
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static struct scsi_device *
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scsi_device_lookup(int type)
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{
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struct scsi_device *sd;
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for (sd = device_list; sd; sd = sd->next)
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if (sd->type == type)
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return sd;
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return &uk_switch;
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}
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|
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static struct scsi_device *
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scsi_device_lookup_by_name(char *name)
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{
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struct scsi_device *sd;
|
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|
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for (sd = device_list; sd; sd = sd->next)
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if (strcmp(sd->name, name) == 0)
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return sd;
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return &uk_switch;
|
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}
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|
|
/* Macro that lets us know something is specified.
|
|
*/
|
|
#define IS_SPECIFIED(ARG) (ARG != SCCONF_UNSPEC && ARG != SCCONF_ANY)
|
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|
|
/* scsi_init: Do all the one time processing. This initializes the
|
|
* type drivers and initializes the configuration.
|
|
*/
|
|
static void
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|
scsi_init(void)
|
|
{
|
|
static int done = 0;
|
|
if(!done) {
|
|
int i;
|
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|
|
done = 1;
|
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|
|
scbusses = extend_new();
|
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|
|
dev_attach(&kdc_scbus0);
|
|
|
|
/* First call all type initialization functions.
|
|
*/
|
|
ukinit(); /* We always have the unknown device. */
|
|
|
|
for (i = 0; scsi_tinit[i]; i++)
|
|
(*scsi_tinit[i])();
|
|
|
|
/* Lowest free bus for auto-configure is one
|
|
* more than the first one not
|
|
* specified in config:
|
|
*/
|
|
for (i = 0; scsi_cinit[i].driver; i++)
|
|
if (IS_SPECIFIED(scsi_cinit[i].scbus) &&
|
|
free_bus <= scsi_cinit[i].scbus)
|
|
free_bus = scsi_cinit[i].scbus + 1;
|
|
|
|
/* Lowest free unit for each type for auto-configure is one
|
|
* more than the first one not specified in the config file:
|
|
*/
|
|
for (i = 0; scsi_dinit[i].name; i++) {
|
|
struct scsi_device_config *sdc = scsi_dinit + i;
|
|
struct scsi_device *sd =
|
|
scsi_device_lookup_by_name(sdc->name);
|
|
|
|
/* This is a little tricky: We don't want "sd 4" to match as
|
|
* a wired down device, but we do want "sd 4 target 5" or
|
|
* even "sd 4 scbus 1" to match.
|
|
*/
|
|
if (IS_SPECIFIED(sdc->unit) &&
|
|
(IS_SPECIFIED(sdc->target) || IS_SPECIFIED(sdc->cunit)) &&
|
|
sd->free_unit <= sdc->unit)
|
|
sd->free_unit = sdc->unit + 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* scsi_bus_conf: Figure out which bus this is. If it is wired in config
|
|
* use that. Otherwise use the next free one.
|
|
*/
|
|
static int
|
|
scsi_bus_conf(sc_link_proto)
|
|
struct scsi_link *sc_link_proto;
|
|
{
|
|
int i;
|
|
int bus;
|
|
|
|
/* Which bus is this? Try to find a match in the "scsi_cinit"
|
|
* table. If it isn't wired down auto-configure it at the
|
|
* next available bus.
|
|
*/
|
|
|
|
bus = SCCONF_UNSPEC;
|
|
for (i = 0; scsi_cinit[i].driver; i++) {
|
|
if (IS_SPECIFIED(scsi_cinit[i].scbus))
|
|
{
|
|
if (!strcmp(sc_link_proto->adapter->name, scsi_cinit[i].driver)
|
|
&&(sc_link_proto->adapter_unit == scsi_cinit[i].unit))
|
|
{
|
|
if (IS_SPECIFIED(scsi_cinit[i].bus)) {
|
|
if (sc_link_proto->adapter_bus==scsi_cinit[i].bus){
|
|
bus = scsi_cinit[i].scbus;
|
|
break;
|
|
}
|
|
}
|
|
else if (sc_link_proto->adapter_bus == 0) {
|
|
/* Backwards compatibility for single bus cards */
|
|
bus = scsi_cinit[i].scbus;
|
|
break;
|
|
}
|
|
else {
|
|
printf("Ambiguous scbus configuration for %s%d "
|
|
"bus %d, cannot wire down. The kernel "
|
|
"config entry for scbus%d should specify "
|
|
"a controller bus.\n"
|
|
"Scbus will be assigned dynamically.\n",
|
|
sc_link_proto->adapter->name,
|
|
sc_link_proto->adapter_unit,
|
|
sc_link_proto->adapter_bus,
|
|
sc_link_proto->adapter_bus );
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
if (bus == SCCONF_UNSPEC)
|
|
bus = free_bus++;
|
|
else if (bootverbose)
|
|
printf("Choosing drivers for scbus configured at %d\n", bus);
|
|
|
|
return bus;
|
|
}
|
|
|
|
/* scsi_assign_unit: Look through the structure generated by config.
|
|
* See if there is a fixed assignment for this unit. If there isn't,
|
|
* assign the next free unit.
|
|
*/
|
|
static int
|
|
scsi_assign_unit(struct scsi_link *sc_link)
|
|
{
|
|
int i;
|
|
int found;
|
|
found = 0;
|
|
for (i = 0; scsi_dinit[i].name; i++) {
|
|
if ((strcmp(sc_link->device->name, scsi_dinit[i].name) == 0) &&
|
|
sc_link->target == scsi_dinit[i].target &&
|
|
(
|
|
(sc_link->lun == scsi_dinit[i].lun) ||
|
|
(sc_link->lun == 0 && scsi_dinit[i].lun == SCCONF_UNSPEC)
|
|
) &&
|
|
sc_link->scsibus == scsi_dinit[i].cunit) {
|
|
sc_link->dev_unit = scsi_dinit[i].unit;
|
|
found = 1;
|
|
if (bootverbose)
|
|
printf("%s is configured at %d\n",
|
|
sc_link->device->name, sc_link->dev_unit);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found)
|
|
sc_link->dev_unit = sc_link->device->free_unit++;
|
|
|
|
return sc_link->dev_unit;
|
|
}
|
|
|
|
|
|
#if NSCTARG > 0
|
|
/* The SCSI target configuration is simpler. If an entry is present
|
|
* we just return the bus, target and lun for that unit.
|
|
*/
|
|
static void
|
|
scsi_sctarg_lookup(char *name, int unit, int *target, int *lun, int *bus)
|
|
{
|
|
int i;
|
|
|
|
*bus = SCCONF_UNSPEC;
|
|
*target = SCCONF_UNSPEC;
|
|
*lun = SCCONF_UNSPEC;
|
|
|
|
for (i = 0; scsi_dinit[i].name; i++) {
|
|
if ((strcmp(name, scsi_dinit[i].name) == 0) &&
|
|
unit == scsi_dinit[i].unit)
|
|
{
|
|
*bus = scsi_dinit[i].cunit;
|
|
*target = scsi_dinit[i].target;
|
|
*lun = scsi_dinit[i].lun;
|
|
}
|
|
}
|
|
}
|
|
#endif /* NSCTARG > 0 */
|
|
|
|
void
|
|
scsi_configure_start(void)
|
|
{
|
|
scsi_init();
|
|
}
|
|
|
|
#if NSCTARG > 0
|
|
static errval scsi_attach_sctarg __P((void));
|
|
#endif
|
|
|
|
void
|
|
scsi_configure_finish(void)
|
|
{
|
|
|
|
#if NSCTARG > 0
|
|
scsi_attach_sctarg();
|
|
#endif
|
|
|
|
}
|
|
|
|
/*
|
|
* scsi_attachdevs is the routine called by the adapter boards
|
|
* to get all their devices configured in.
|
|
*/
|
|
void
|
|
scsi_attachdevs(scbus)
|
|
struct scsibus_data *scbus;
|
|
{
|
|
int scsibus;
|
|
struct scsi_link *sc_link_proto = scbus->adapter_link;
|
|
|
|
if ( (scsibus = scsi_bus_conf(sc_link_proto)) == -1) {
|
|
return;
|
|
}
|
|
/*
|
|
* if the adapter didn't give us this, set a default
|
|
* (compatibility with old adapter drivers)
|
|
*/
|
|
if(!(sc_link_proto->opennings)) {
|
|
sc_link_proto->opennings = 1;
|
|
}
|
|
sc_link_proto->scsibus = scsibus;
|
|
/*
|
|
* Allocate our target-lun space.
|
|
*/
|
|
scbus->sc_link = (struct scsi_link *(*)[][8])malloc(
|
|
sizeof(struct scsi_link *[scbus->maxtarg + 1][8]),
|
|
M_TEMP, M_NOWAIT);
|
|
if(scbus == 0 || scbus->sc_link == 0
|
|
|| extend_set(scbusses, scsibus, scbus) == 0) {
|
|
panic("scsi_attachdevs: malloc");
|
|
}
|
|
bzero(scbus->sc_link, sizeof(struct scsi_link*[scbus->maxtarg + 1][8]));
|
|
#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);
|
|
scsi_probe_bus(scsibus,-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 < scbusses->nelem; bus++) {
|
|
scsi_probe_bus(bus, targ, lun);
|
|
}
|
|
return 0;
|
|
} else {
|
|
return scsi_probe_bus(bus, targ, lun);
|
|
}
|
|
}
|
|
|
|
/* scsi_alloc_unit: Register a scsi_data pointer for a given
|
|
* unit in a given scsi_device structure.
|
|
*
|
|
* XXX dufault@hda.com: I still don't like the way this reallocs stuff -
|
|
* but at least now it is collected in one place instead of existing
|
|
* in multiple type drivers. I'd like it better if we had it do a
|
|
* second pass after it knew the sizes of everything and set up everything
|
|
* at once.
|
|
*/
|
|
static int
|
|
scsi_alloc_unit(struct scsi_link *sc_link)
|
|
{
|
|
u_int32 unit;
|
|
struct scsi_data *sd;
|
|
struct scsi_device *dsw;
|
|
|
|
unit = sc_link->dev_unit;
|
|
dsw = sc_link->device;
|
|
|
|
/*
|
|
* allocate the per unit data area
|
|
*/
|
|
if (dsw->sizeof_scsi_data)
|
|
{
|
|
sd = malloc(dsw->sizeof_scsi_data, M_DEVBUF, M_NOWAIT);
|
|
if (!sd) {
|
|
printf("%s%ld: malloc failed for scsi_data\n",
|
|
sc_link->device->name, unit);
|
|
return 0;
|
|
}
|
|
bzero(sd, dsw->sizeof_scsi_data);
|
|
}
|
|
else
|
|
sd = 0;
|
|
|
|
sc_link->sd = sd;
|
|
|
|
if (extend_set(dsw->links, unit, (void *)sc_link) == 0) {
|
|
printf("%s%ld: Can't store link pointer.\n",
|
|
sc_link->device->name, unit);
|
|
free(sd, M_DEVBUF);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
scsi_free_unit(struct scsi_link *sc_link)
|
|
{
|
|
if (sc_link->sd)
|
|
{
|
|
free(sc_link->sd, M_DEVBUF);
|
|
sc_link->sd = 0;
|
|
}
|
|
extend_release(sc_link->device->links, sc_link->dev_unit);
|
|
}
|
|
|
|
#if NSCTARG > 0
|
|
|
|
/* XXX: It is a bug that the sc_link has this information
|
|
* about the adapter in it. The sc_link should refer to
|
|
* a structure that is host adpater specific. That will also
|
|
* pull all knowledge of an sc_link out of the adapter drivers.
|
|
*/
|
|
|
|
errval
|
|
scsi_set_bus(int bus, struct scsi_link *sc_link)
|
|
{
|
|
struct scsi_link *ad_link;
|
|
struct scsibus_data *scsibus_data;
|
|
|
|
if (bus < 0 || bus > scbusses->nelem) {
|
|
return ENXIO;
|
|
}
|
|
|
|
scsibus_data = (struct scsibus_data *)extend_get(scbusses, bus);
|
|
|
|
if(!scsibus_data) {
|
|
return ENXIO;
|
|
}
|
|
|
|
ad_link = scsibus_data->adapter_link;
|
|
|
|
sc_link->adapter_unit = ad_link->adapter_unit;
|
|
sc_link->adapter_targ = ad_link->adapter_targ;
|
|
sc_link->adapter = ad_link->adapter;
|
|
sc_link->device = ad_link->device;
|
|
sc_link->flags = ad_link->flags;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Allocate and attach as many SCSI target devices as configured.
|
|
* There are two ways that you can configure the target device:
|
|
* 1. In the configuration file. That is handled here.
|
|
* 2. Via the minor number. That takes precedence over the config file.
|
|
*/
|
|
static errval
|
|
scsi_attach_sctarg()
|
|
{
|
|
struct scsi_link *sc_link = NULL;
|
|
int dev_unit;
|
|
struct scsi_device *sctarg = scsi_device_lookup(T_TARGET);
|
|
|
|
if (sctarg == 0) {
|
|
return ENXIO;
|
|
}
|
|
|
|
for (dev_unit = 0; dev_unit < NSCTARG; dev_unit++) {
|
|
|
|
int target, lun, bus;
|
|
|
|
/* If we don't have a link block allocate one.
|
|
*/
|
|
if (!sc_link) {
|
|
sc_link = malloc(sizeof(*sc_link), M_TEMP, M_NOWAIT);
|
|
}
|
|
|
|
scsi_sctarg_lookup(sctarg->name, dev_unit, &target, &lun, &bus);
|
|
|
|
if (IS_SPECIFIED(bus)) {
|
|
struct scsibus_data *scsibus_data;
|
|
|
|
if (bus < 0 || bus > scbusses->nelem) {
|
|
printf("%s%d: configured on illegal bus %d.\n",
|
|
sctarg->name, dev_unit, bus);
|
|
continue;
|
|
}
|
|
|
|
scsibus_data = (struct scsibus_data *)extend_get(scbusses, bus);
|
|
|
|
if(!scsibus_data) {
|
|
printf("%s%d: no bus %d.\n", sctarg->name, dev_unit, bus);
|
|
continue;
|
|
}
|
|
|
|
*sc_link = *scsibus_data->adapter_link; /* struct copy */
|
|
sc_link->target = target;
|
|
sc_link->lun = lun;
|
|
}
|
|
else {
|
|
/* This will be configured in the open routine.
|
|
*/
|
|
sc_link->scsibus = SCCONF_UNSPEC;
|
|
sc_link->target = SCCONF_UNSPEC;
|
|
sc_link->lun = SCCONF_UNSPEC;
|
|
}
|
|
|
|
sc_link->quirks = 0;
|
|
sc_link->device = sctarg;
|
|
sc_link->dev_unit = dev_unit;
|
|
|
|
if (scsi_alloc_unit(sc_link)) {
|
|
|
|
if (scsi_device_attach(sc_link) == 0) {
|
|
sc_link = NULL; /* it's been used */
|
|
}
|
|
else
|
|
scsi_free_unit(sc_link);
|
|
}
|
|
}
|
|
|
|
if (sc_link) {
|
|
free(sc_link, M_TEMP);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif /* NSCTARG > 0 */
|
|
|
|
/*
|
|
* Allocate a scsibus_data structure
|
|
* The target/lun area is dynamically allocated in scsi_attachdevs after
|
|
* the controller driver has a chance to update the maxtarg field.
|
|
*/
|
|
struct scsibus_data*
|
|
scsi_alloc_bus()
|
|
{
|
|
struct scsibus_data *scbus;
|
|
/*
|
|
* Prepare the scsibus_data area for the upperlevel
|
|
* scsi code.
|
|
*/
|
|
scbus = malloc(sizeof(struct scsibus_data), M_TEMP, M_NOWAIT);
|
|
if(!scbus) {
|
|
printf("scsi_alloc_bus: - cannot malloc!\n");
|
|
return NULL;
|
|
}
|
|
bzero(scbus, sizeof(struct scsibus_data));
|
|
/* Setup the defaults */
|
|
scbus->maxtarg = 7;
|
|
scbus->maxlun = 7;
|
|
return scbus;
|
|
}
|
|
|
|
/*
|
|
* 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 *scsibus_data ;
|
|
int maxtarg,mintarg,maxlun,minlun;
|
|
struct scsi_link *sc_link_proto;
|
|
u_int8 scsi_addr ;
|
|
struct scsidevs *bestmatch = NULL;
|
|
struct scsi_link *sc_link = NULL;
|
|
boolean maybe_more;
|
|
int type;
|
|
|
|
if ((bus < 0 ) || ( bus >= scbusses->nelem)) {
|
|
return ENXIO;
|
|
}
|
|
scsibus_data = (struct scsibus_data *)extend_get(scbusses, bus);
|
|
if(!scsibus_data) return ENXIO;
|
|
sc_link_proto = scsibus_data->adapter_link;
|
|
scsi_addr = sc_link_proto->adapter_targ;
|
|
if(targ == -1){
|
|
maxtarg = scsibus_data->maxtarg;
|
|
mintarg = 0;
|
|
} else {
|
|
if((targ < 0 ) || (targ > scsibus_data->maxtarg)) return EINVAL;
|
|
maxtarg = mintarg = targ;
|
|
}
|
|
|
|
if(lun == -1){
|
|
maxlun = scsibus_data->maxlun;
|
|
minlun = 0;
|
|
} else {
|
|
if((lun < 0 ) || (lun > scsibus_data->maxlun)) 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((*scsibus_data->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->device = &probe_switch;
|
|
sc_link->target = targ;
|
|
sc_link->lun = lun;
|
|
sc_link->quirks = 0;
|
|
bestmatch = scsi_probedev(sc_link, &maybe_more, &type);
|
|
if (bestmatch) {
|
|
sc_link->quirks = bestmatch->quirks;
|
|
sc_link->devmodes = bestmatch->devmodes;
|
|
} else {
|
|
sc_link->quirks = 0;
|
|
sc_link->devmodes = NULL;
|
|
}
|
|
if (bestmatch) { /* FOUND */
|
|
sc_link->device = scsi_device_lookup(type);
|
|
|
|
(void)scsi_assign_unit(sc_link);
|
|
|
|
if (scsi_alloc_unit(sc_link)) {
|
|
|
|
if (scsi_device_attach(sc_link) == 0) {
|
|
(*scsibus_data->sc_link)[targ][lun] = sc_link;
|
|
sc_link = NULL; /* it's been used */
|
|
}
|
|
else
|
|
scsi_free_unit(sc_link);
|
|
}
|
|
}
|
|
|
|
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 *scsibus_data =
|
|
(struct scsibus_data *)extend_get(scbusses, bus);
|
|
return (scsibus_data) ? (*scsibus_data->sc_link)[targ][lun] : 0;
|
|
}
|
|
|
|
/* make_readable: Make the inquiry data readable. Anything less than a ' '
|
|
* is made a '?' and trailing spaces are removed.
|
|
*/
|
|
static void
|
|
make_readable(to, from, n)
|
|
char *to;
|
|
char *from;
|
|
size_t n;
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; from[i] && i < n - 1; i++) {
|
|
if (from[i] < ' ')
|
|
to[i]='?';
|
|
else
|
|
to[i] = from[i];
|
|
}
|
|
|
|
while (i && to[i - 1] == ' ')
|
|
i--;
|
|
|
|
to[i] = 0;
|
|
}
|
|
|
|
/*
|
|
* given a target and lu, ask the device what
|
|
* it is, and find the correct driver table
|
|
* entry.
|
|
*/
|
|
static struct scsidevs *
|
|
scsi_probedev(sc_link, maybe_more, type_p)
|
|
boolean *maybe_more;
|
|
struct scsi_link *sc_link;
|
|
int *type_p;
|
|
{
|
|
u_int8 target = sc_link->target;
|
|
u_int8 lu = sc_link->lun;
|
|
struct scsidevs *bestmatch = (struct scsidevs *) 0;
|
|
int dtype = 0;
|
|
char *desc;
|
|
char *qtype;
|
|
struct scsi_inquiry_data *inqbuf;
|
|
u_int32 len, qualifier, type;
|
|
boolean remov;
|
|
char manu[8 + 1];
|
|
char model[16 + 1];
|
|
char version[4 + 1];
|
|
|
|
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 will match in the default of this switch.
|
|
*/
|
|
|
|
switch ((int)qualifier) {
|
|
case SID_QUAL_LU_OK:
|
|
qtype = "";
|
|
break;
|
|
|
|
case SID_QUAL_LU_OFFLINE:
|
|
qtype = "Supported device currently not connected";
|
|
break;
|
|
|
|
case SID_QUAL_RSVD: /* Peripheral qualifier reserved in SCSI-2 spec */
|
|
*maybe_more = 1;
|
|
return (struct scsidevs *) 0;
|
|
|
|
case SID_QUAL_BAD_LU: /* Target can not support a device on this unit */
|
|
/*
|
|
* 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.
|
|
*/
|
|
*maybe_more = 1;
|
|
return (struct scsidevs *) 0;
|
|
|
|
default:
|
|
dtype = 1;
|
|
qtype = "Vendor specific peripheral qualifier";
|
|
*maybe_more = 1;
|
|
break;
|
|
}
|
|
|
|
if (dtype == 0) {
|
|
if (type == T_NODEVICE) {
|
|
*maybe_more = 1;
|
|
return (struct scsidevs *) 0;
|
|
}
|
|
dtype = 1;
|
|
}
|
|
/*
|
|
* 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;
|
|
make_readable(manu, inqbuf->vendor, sizeof(manu));
|
|
make_readable(model, inqbuf->product, sizeof(model));
|
|
make_readable(version, inqbuf->revision, sizeof(version));
|
|
} else {
|
|
/*
|
|
* If not advanced enough, use default values
|
|
*/
|
|
desc = "early protocol device";
|
|
make_readable(manu, "unknown", sizeof(manu));
|
|
make_readable(model, "unknown", sizeof(model));
|
|
make_readable(version, "????", sizeof(version));
|
|
}
|
|
|
|
sc_print_start(sc_link);
|
|
|
|
printf("\"%s %s %s\" ", manu, model, version );
|
|
printf("type %ld %sSCSI %d"
|
|
,type
|
|
,remov ? "removable " : "fixed "
|
|
,inqbuf->version & SID_ANSII
|
|
);
|
|
if (qtype[0]) {
|
|
sc_print_addr(sc_link);
|
|
printf(" qualifier %ld: %s" ,qualifier ,qtype);
|
|
}
|
|
|
|
printf("\n");
|
|
sc_print_finish();
|
|
|
|
/*
|
|
* Try make as good a match as possible with
|
|
* available sub drivers
|
|
*/
|
|
bestmatch = (scsi_selectdev(
|
|
qualifier, type, remov ? T_REMOV : T_FIXED, manu, model, version));
|
|
if ((bestmatch) && (bestmatch->flags & SC_MORE_LUS)) {
|
|
*maybe_more = 1;
|
|
}
|
|
|
|
/* If the device is unknown then we should be trying to look up a
|
|
* type driver based on the inquiry type.
|
|
*/
|
|
if (bestmatch == &unknowndev)
|
|
*type_p = type;
|
|
else
|
|
*type_p =
|
|
bestmatch->driver;
|
|
return bestmatch;
|
|
}
|
|
|
|
/* Try to find the major number for a device during attach.
|
|
*/
|
|
dev_t
|
|
scsi_dev_lookup(d_open)
|
|
d_open_t *d_open;
|
|
{
|
|
int i;
|
|
|
|
dev_t d = NODEV;
|
|
|
|
for (i = 0; i < nchrdev; i++)
|
|
if (cdevsw[i] && cdevsw[i]->d_open == d_open)
|
|
{
|
|
d = makedev(i, 0);
|
|
break;
|
|
}
|
|
|
|
return d;
|
|
}
|
|
|
|
/*
|
|
* Compare name with pattern, return 0 on match.
|
|
* Short pattern matches trailing blanks in name,
|
|
* wildcard '*' in pattern matches rest of name
|
|
*/
|
|
static int
|
|
match(pattern, name)
|
|
char *pattern;
|
|
char *name;
|
|
{
|
|
char c;
|
|
while (c = *pattern++)
|
|
{
|
|
if (c == '*') return 0;
|
|
if ((c == '?') && (*name > ' ')) continue;
|
|
if (c != *name++) return 1;
|
|
}
|
|
while (c = *name++)
|
|
{
|
|
if (c != ' ') return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Try make as good a match as possible with
|
|
* available sub drivers
|
|
*/
|
|
static struct scsidevs *
|
|
scsi_selectdev(qualifier, type, remov, manu, model, rev)
|
|
u_int32 qualifier, type;
|
|
boolean remov;
|
|
char *manu, *model, *rev;
|
|
{
|
|
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;
|
|
}
|
|
if (bestmatch == (struct scsidevs *) 0) {
|
|
bestmatch = &unknowndev;
|
|
}
|
|
return (bestmatch);
|
|
}
|
|
|
|
int
|
|
scsi_externalize(struct scsi_link *sl, struct sysctl_req *req)
|
|
{
|
|
return SYSCTL_OUT(req, sl, sizeof *sl);
|
|
}
|