/*
* Copyright (C) 1996 Wolfgang Solfrank.
* Copyright (C) 1996 TooLs GmbH.
* 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 TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*/
/*-
* Copyright (c) 2001 - 2003 by Thomas Moestl <tmm@FreeBSD.org>.
* 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.
*
* 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 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.
*
* from: $NetBSD: ofw_machdep.c,v 1.16 2001/07/20 00:07:14 eeh Exp $
*
* $FreeBSD$
*/
/*
* OpenFirmware bus support code that is (hopefully) independent from the used
* hardware.
* Maybe this should go into dev/ofw/; there may however be sparc specific
* bits left.
*/
#include <sys/param.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <dev/ofw/openfirm.h>
#include <machine/ofw_bus.h>
static int
ofw_bus_searchprop(phandle_t node, char *propname, void *buf, int buflen)
{
int rv;
for (; node != 0; node = OF_parent(node)) {
if ((rv = OF_getprop(node, propname, buf, buflen)) != -1)
return (rv);
}
return (-1);
}
void
ofw_bus_setup_iinfo(phandle_t node, struct ofw_bus_iinfo *ii, int intrsz)
{
pcell_t addrc;
int msksz;
if (OF_getprop(node, "#address-cells", &addrc, sizeof(addrc)) == -1)
addrc = 2;
ii->opi_addrc = addrc * sizeof(pcell_t);
ii->opi_imapsz = OF_getprop_alloc(node, "interrupt-map", 1,
(void **)&ii->opi_imap);
if (ii->opi_imapsz > 0) {
msksz = OF_getprop_alloc(node, "interrupt-map-mask", 1,
(void **)&ii->opi_imapmsk);
/*
* Failure to get the mask is ignored; a full mask is used then.
* Barf on bad mask sizes, however.
*/
if (msksz != -1 && msksz != ii->opi_addrc + intrsz) {
panic("ofw_bus_setup_iinfo: bad interrupt-map-mask "
"property!");
}
}
}
int
ofw_bus_lookup_imap(phandle_t node, struct ofw_bus_iinfo *ii, void *reg,
int regsz, void *pintr, int pintrsz, void *mintr, int mintrsz,
void *maskbuf)
{
int rv;
if (ii->opi_imapsz <= 0)
return (0);
KASSERT(regsz >= ii->opi_addrc,
("ofw_bus_lookup_imap: register size too small: %d < %d",
regsz, ii->opi_addrc));
rv = OF_getprop(node, "reg", reg, regsz);
if (rv < regsz)
panic("ofw_bus_lookup_imap: could not get reg property");
return (ofw_bus_search_intrmap(pintr, pintrsz, reg, ii->opi_addrc,
ii->opi_imap, ii->opi_imapsz, ii->opi_imapmsk, maskbuf, mintr,
mintrsz));
}
/*
* Map an interrupt using the firmware reg, interrupt-map and
* interrupt-map-mask properties.
* The interrupt property to be mapped must be of size intrsz, and pointed to
* by intr. The regs property of the node for which the mapping is done must
* be passed as regs. This property is an array of register specifications;
* the size of the address part of such a specification must be passed as
* physsz. Only the first element of the property is used.
* imap and imapsz hold the interrupt mask and it's size.
* imapmsk is a pointer to the interrupt-map-mask property, which must have
* a size of physsz + intrsz; it may be NULL, in which case a full mask is
* assumed.
* maskbuf must point to a buffer of length physsz + intrsz.
* The interrupt is returned in result, which must point to a buffer of length
* rintrsz (which gives the expected size of the mapped interrupt).
* Returns 1 if a mapping was found, 0 otherwise.
*/
int
ofw_bus_search_intrmap(void *intr, int intrsz, void *regs, int physsz,
void *imap, int imapsz, void *imapmsk, void *maskbuf, void *result,
int rintrsz)
{
phandle_t parent;
u_int8_t *ref = maskbuf;
u_int8_t *uiintr = intr;
u_int8_t *uiregs = regs;
u_int8_t *uiimapmsk = imapmsk;
u_int8_t *mptr;
pcell_t pintrsz;
int i, rsz, tsz;
rsz = -1;
if (imapmsk != NULL) {
for (i = 0; i < physsz; i++)
ref[i] = uiregs[i] & uiimapmsk[i];
for (i = 0; i < intrsz; i++)
ref[physsz + i] = uiintr[i] & uiimapmsk[physsz + i];
} else {
bcopy(regs, ref, physsz);
bcopy(intr, ref + physsz, intrsz);
}
mptr = imap;
i = imapsz;
tsz = physsz + intrsz + sizeof(phandle_t) + rintrsz;
while (i > 0) {
KASSERT(i >= tsz, ("ofw_bus_search_intrmap: truncated map"));
bcopy(mptr + physsz + intrsz, &parent, sizeof(parent));
if (ofw_bus_searchprop(parent, "#interrupt-cells",
&pintrsz, sizeof(pintrsz)) == -1)
pintrsz = 1; /* default */
pintrsz *= sizeof(pcell_t);
if (pintrsz != rintrsz)
panic("ofw_bus_search_intrmap: expected interrupt cell "
"size incorrect: %d != %d", rintrsz, pintrsz);
if (bcmp(ref, mptr, physsz + intrsz) == 0) {
bcopy(mptr + physsz + intrsz + sizeof(parent),
result, rintrsz);
return (1);
}
mptr += tsz;
i -= tsz;
}
return (0);
}
