NetBSD/sys/arch/sparc/dev/obio.c

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/* $NetBSD: obio.c,v 1.39 1998/01/25 19:44:43 pk Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/
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/*
* Copyright (c) 1993, 1994 Theo de Raadt
* Copyright (c) 1995, 1997 Paul Kranenburg
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* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Theo de Raadt.
* 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.
*/
#include <sys/param.h>
#include <sys/systm.h>
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#include <sys/device.h>
#include <sys/malloc.h>
#ifdef DEBUG
#include <sys/proc.h>
#include <sys/syslog.h>
#endif
#include <vm/vm.h>
#include <machine/autoconf.h>
#include <machine/pmap.h>
#include <machine/oldmon.h>
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#include <machine/cpu.h>
#include <machine/ctlreg.h>
#include <sparc/sparc/asm.h>
#include <sparc/sparc/vaddrs.h>
#include <sparc/sparc/cpuvar.h>
#include <sparc/dev/sbusvar.h>
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struct bus_softc {
union {
struct device scu_dev; /* base device */
struct sbus_softc scu_sbus; /* obio is another sbus slot */
} bu;
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};
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/* autoconfiguration driver */
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int obioprint __P((void *, const char *));
static int obiomatch __P((struct device *, struct cfdata *, void *));
static void obioattach __P((struct device *, struct device *, void *));
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#if defined(SUN4)
static void obioattach4 __P((struct device *, struct device *, void *));
int obiosearch __P((struct device *, struct cfdata *, void *));
#endif
#if defined(SUN4M)
static void obioattach4m __P((struct device *, struct device *, void *));
#endif
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struct cfattach obio_ca = {
sizeof(struct bus_softc), obiomatch, obioattach
};
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int
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obiomatch(parent, cf, aux)
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struct device *parent;
struct cfdata *cf;
void *aux;
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{
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register struct confargs *ca = aux;
register struct romaux *ra = &ca->ca_ra;
return (strcmp(cf->cf_driver->cd_name, ra->ra_name) == 0);
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}
int
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obioprint(args, name)
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void *args;
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const char *name;
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{
register struct confargs *ca = args;
if (ca->ca_ra.ra_name == NULL)
ca->ca_ra.ra_name = "<unknown>";
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if (name)
printf("[%s at %s]", ca->ca_ra.ra_name, name);
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printf(" addr %p", ca->ca_ra.ra_paddr);
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return (UNCONF);
}
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void
obioattach(parent, self, args)
struct device *parent, *self;
void *args;
{
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#if defined(SUN4)
if (CPU_ISSUN4)
obioattach4(parent, self, args);
#endif
#if defined(SUN4M)
if (CPU_ISSUN4M)
obioattach4m(parent, self, args);
#endif
}
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#if defined(SUN4)
void
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obioattach4(parent, self, args)
struct device *parent, *self;
void *args;
{
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if (self->dv_unit > 0) {
printf(" unsupported\n");
return;
}
printf("\n");
(void)config_search(obiosearch, self, args);
obio_bus_untmp();
}
#endif
#if defined(SUN4M)
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void
obioattach4m(parent, self, args)
struct device *parent, *self;
void *args;
{
register struct bus_softc *sc = (struct bus_softc *)self;
struct confargs oca, *ca = args;
register struct romaux *ra = &ca->ca_ra;
register int node0, node;
register char *name;
register const char *sp;
const char *const *ssp;
int rlen;
extern int autoconf_nzs;
static const char *const special4m[] = {
/* find these first */
"eeprom",
"counter",
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#if 0 /* Not all sun4m's have an `auxio' */
"auxio",
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#endif
"",
/* place device to ignore here */
"interrupt",
NULL
};
/*
* There is only one obio bus (it is in fact one of the Sbus slots)
*/
if (self->dv_unit > 0) {
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printf(" unsupported\n");
return;
}
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printf("\n");
if (ra->ra_bp != NULL && strcmp(ra->ra_bp->name, "obio") == 0)
oca.ca_ra.ra_bp = ra->ra_bp + 1;
else
oca.ca_ra.ra_bp = NULL;
node = ra->ra_node;
rlen = getproplen(node, "ranges");
if (rlen > 0) {
sc->bu.scu_sbus.sc_nrange = rlen / sizeof(struct rom_range);
sc->bu.scu_sbus.sc_range =
(struct rom_range *)malloc(rlen, M_DEVBUF, M_NOWAIT);
if (sc->bu.scu_sbus.sc_range == 0)
panic("obio: PROM ranges too large: %d", rlen);
(void)getprop(node, "ranges", sc->bu.scu_sbus.sc_range, rlen);
}
/*
* Loop through ROM children, fixing any relative addresses
* and then configuring each device.
* We first do the crucial ones, such as eeprom, etc.
*/
node0 = firstchild(ra->ra_node);
for (ssp = special4m ; *(sp = *ssp) != 0; ssp++) {
if ((node = findnode(node0, sp)) == 0) {
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printf("could not find %s amongst obio devices\n", sp);
panic(sp);
}
if (!romprop(&oca.ca_ra, sp, node))
continue;
sbus_translate(self, &oca);
oca.ca_bustype = BUS_OBIO;
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(void) config_found(self, (void *)&oca, obioprint);
}
for (node = node0; node; node = nextsibling(node)) {
name = getpropstring(node, "name");
for (ssp = special4m ; (sp = *ssp) != NULL; ssp++)
if (strcmp(name, sp) == 0)
break;
if (sp != NULL || !romprop(&oca.ca_ra, name, node))
continue;
if (strcmp(name, "zs") == 0)
/* XXX - see autoconf.c for this hack */
autoconf_nzs++;
/* Translate into parent address spaces */
sbus_translate(self, &oca);
oca.ca_bustype = BUS_OBIO;
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(void) config_found(self, (void *)&oca, obioprint);
}
}
#endif
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#if defined(SUN4)
int
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obiosearch(parent, cf, args)
struct device *parent;
struct cfdata *cf;
void *args;
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{
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register struct confargs *ca = args;
struct confargs oca;
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caddr_t tmp;
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/*
* Avoid sun4m entries which don't have valid PAs.
* no point in even probing them.
*/
if (cf->cf_loc[0] == -1)
return (0);
/*
* On the 4/100 obio addresses must be mapped at
* 0x0YYYYYYY, but alias higher up (we avoid the
* alias condition because it causes pmap difficulties)
* XXX: We also assume that 4/[23]00 obio addresses
* must be 0xZYYYYYYY, where (Z != 0)
*/
if (cpuinfo.cpu_type == CPUTYP_4_100 &&
(cf->cf_loc[0] & 0xf0000000))
return (0);
if (cpuinfo.cpu_type != CPUTYP_4_100 &&
!(cf->cf_loc[0] & 0xf0000000))
return (0);
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oca.ca_ra.ra_paddr = (void *)cf->cf_loc[0];
oca.ca_ra.ra_len = 0;
oca.ca_ra.ra_nreg = 1;
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oca.ca_ra.ra_iospace = PMAP_OBIO;
if (oca.ca_ra.ra_paddr)
tmp = (caddr_t)mapdev(oca.ca_ra.ra_reg, TMPMAP_VA, 0, NBPG);
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else
tmp = NULL;
oca.ca_ra.ra_vaddr = tmp;
oca.ca_ra.ra_intr[0].int_pri = cf->cf_loc[1];
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oca.ca_ra.ra_intr[0].int_vec = -1;
oca.ca_ra.ra_nintr = 1;
oca.ca_ra.ra_name = cf->cf_driver->cd_name;
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if (ca->ca_ra.ra_bp != NULL &&
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strcmp(ca->ca_ra.ra_bp->name, "obio") == 0)
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oca.ca_ra.ra_bp = ca->ca_ra.ra_bp + 1;
else
oca.ca_ra.ra_bp = NULL;
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oca.ca_bustype = BUS_OBIO;
if ((*cf->cf_attach->ca_match)(parent, cf, &oca) == 0)
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return (0);
/*
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* Check if XXmatch routine replaced the temporary mapping with
* a real mapping. If not, then make sure we don't pass the
* tmp mapping to the attach routine.
*/
if (oca.ca_ra.ra_vaddr == tmp)
oca.ca_ra.ra_vaddr = NULL; /* wipe out tmp address */
/*
* the match routine will set "ra_len" if it wants us to
* establish a mapping for it.
* (which won't be seen on future XXmatch calls,
* so not as useful as it seems.)
*/
if (oca.ca_ra.ra_len)
oca.ca_ra.ra_vaddr =
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obio_bus_map(oca.ca_ra.ra_reg, oca.ca_ra.ra_len);
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config_attach(parent, cf, &oca, obioprint);
return (1);
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}
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#define getpte(va) lda(va, ASI_PTE)
/*
* If we can find a mapping that was established by the rom, use it.
* Else, create a new mapping.
*/
void *
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obio_bus_map(pa, len)
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struct rom_reg *pa;
int len;
{
if (CPU_ISSUN4 && len <= NBPG) {
u_long pf = (u_long)(pa->rr_paddr) >> PGSHIFT;
int pgtype = PMAP_T2PTE_4(pa->rr_iospace);
u_long va, pte;
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for (va = OLDMON_STARTVADDR; va < OLDMON_ENDVADDR; va += NBPG) {
pte = getpte(va);
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if ((pte & PG_V) != 0 && (pte & PG_TYPE) == pgtype &&
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(pte & PG_PFNUM) == pf)
return ((void *)
(va | ((u_long)pa->rr_paddr & PGOFSET)) );
/* note: preserve page offset */
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}
}
return mapiodev(pa, 0, len);
}
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#endif /* SUN4 */
void
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obio_bus_untmp()
{
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pmap_remove(pmap_kernel(), TMPMAP_VA, TMPMAP_VA+NBPG);
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}