NetBSD/sys/arch/x68k/dev/scsirom.c

179 lines
4.9 KiB
C

/* $NetBSD: scsirom.c,v 1.5 1999/04/22 16:22:49 minoura Exp $ */
/*-
* Copyright (c) 1999 NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Minoura Makoto.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles D. Cranor and
* Washington University.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* SCSI BIOS ROM.
* Used to probe the board.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/cpu.h>
#include <arch/x68k/dev/intiovar.h>
#include <arch/x68k/dev/scsiromvar.h>
struct {
paddr_t addr, devaddr;
int intr;
const char id[7];
} scsirom_descr[] = {{
0x00fc0000, 0x00e96020, 108, "SCSIIN"
}, {
0x00ea0020, 0x00ea0000, 246, "SCSIEX"
}};
#define SCSIROM_ID 0x24
/*
* autoconf stuff
*/
static int scsirom_find __P((struct device *, struct intio_attach_args *));
static int scsirom_match __P((struct device *, struct cfdata *, void *));
static void scsirom_attach __P((struct device *, struct device *, void *));
struct cfattach scsirom_ca = {
sizeof(struct scsirom_softc), scsirom_match, scsirom_attach
};
static int
scsirom_find (parent, ia)
struct device *parent;
struct intio_attach_args *ia;
{
bus_space_handle_t ioh;
char buf[10];
int which;
int r = -1;
if (ia->ia_addr == scsirom_descr[INTERNAL].addr)
which = INTERNAL;
else if (ia->ia_addr == scsirom_descr[EXTERNAL].addr)
which = EXTERNAL;
else
return -1;
ia->ia_size = 0x1fe0;
if (intio_map_allocate_region (parent, ia, INTIO_MAP_TESTONLY))
return -1;
if (bus_space_map (ia->ia_bst, ia->ia_addr, ia->ia_size, 0, &ioh) < 0)
return -1;
if (badaddr ((caddr_t)INTIO_ADDR(ia->ia_addr+SCSIROM_ID))) {
bus_space_unmap (ia->ia_bst, ioh, ia->ia_size);
return -1;
}
bus_space_read_region_1 (ia->ia_bst, ioh, SCSIROM_ID, buf, 6);
if (memcmp(buf, scsirom_descr[which].id, 6) == 0)
r = which;
bus_space_unmap (ia->ia_bst, ioh, ia->ia_size);
return r;
}
static int
scsirom_match(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct intio_attach_args *ia = aux;
int r;
if (strcmp (ia->ia_name, "scsirom") != 0)
return 0;
if (ia->ia_addr == INTIOCF_ADDR_DEFAULT) {
ia->ia_addr = scsirom_descr[0].addr;
r = scsirom_find (parent, ia);
if (r == INTERNAL)
return 1;
ia->ia_addr = scsirom_descr[1].addr;
r = scsirom_find (parent, ia);
if (r == EXTERNAL)
return 1;
return 0;
} else if (scsirom_find(parent, ia) >= 0)
return 1;
else
return 0;
}
static void
scsirom_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct scsirom_softc *sc = (struct scsirom_softc *)self;
struct intio_attach_args *ia = aux;
int r;
struct cfdata *cf;
sc->sc_addr = ia->ia_addr;
sc->sc_which = scsirom_find (parent, ia);
#ifdef DIAGNOSTIC
if (sc->sc_which < 0)
panic ("SCSIROM curruption??");
#endif
r = intio_map_allocate_region (parent, ia, INTIO_MAP_ALLOCATE);
#ifdef DIAGNOSTIC
if (r)
panic ("IO map for SCSIROM corruption??");
#endif
ia->ia_addr = scsirom_descr[sc->sc_which].devaddr;
if (ia->ia_intr == INTIOCF_INTR_DEFAULT)
ia->ia_intr = scsirom_descr[sc->sc_which].intr;
if (sc->sc_which == INTERNAL)
printf (": On-board at %p\n", (void*)ia->ia_addr);
else
printf (": External at %p\n", (void*)ia->ia_addr);
cf = config_search (NULL, self, ia);
if (cf) {
config_attach(self, cf, ia, NULL);
} else {
printf ("%s: no matching device; ignored.\n",
self->dv_xname);
}
return;
}