This file is superseded by promlib.c
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pk
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/* $NetBSD: obp.c,v 1.2 1998/09/26 19:08:09 pk Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Paul Kranenburg.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* OPENPROM functions. These are here mainly to hide the OPENPROM interface
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* from the rest of the kernel.
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*/
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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 <machine/bsd_openprom.h>
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/*
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* getprop() reads the named property data from a given node.
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* A buffer for the data may be passed in `*bufp'; if NULL, a
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* buffer is allocated. The argument `size' specifies the data
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* element size of the property data. This function checks that
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* the actual property data length is an integral multiple of
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* the element size. The number of data elements read into the
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* buffer is returned into the integer pointed at by `nitem'.
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*/
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int
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getprop(node, name, size, nitem, bufp)
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int node;
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char *name;
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int size;
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int *nitem;
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void **bufp;
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{
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struct nodeops *no;
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void *buf;
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int len;
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no = promvec->pv_nodeops;
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len = no->no_proplen(node, name);
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if (len <= 0)
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return (ENOENT);
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if ((len % size) != 0)
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return (EINVAL);
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buf = *bufp;
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if (buf == NULL) {
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/* No storage provided, so we allocate some */
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buf = malloc(len, M_DEVBUF, M_NOWAIT);
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if (buf == NULL)
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return (ENOMEM);
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}
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no->no_getprop(node, name, buf);
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*bufp = buf;
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*nitem = len / size;
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return (0);
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}
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/*
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* Internal form of proplen(). Returns the property length.
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*/
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int
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getproplen(node, name)
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int node;
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char *name;
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{
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struct nodeops *no = promvec->pv_nodeops;
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return (no->no_proplen(node, name));
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}
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/*
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* Return a string property. There is a (small) limit on the length;
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* the string is fetched into a static buffer which is overwritten on
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* subsequent calls.
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*/
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char *
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getpropstring(node, name)
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int node;
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char *name;
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{
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static char stringbuf[32];
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return (getpropstringA(node, name, stringbuf));
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}
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/*
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* Alternative getpropstring(), where caller provides the buffer
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*/
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char *
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getpropstringA(node, name, buffer)
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int node;
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char *name;
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char *buffer;
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{
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int blen;
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if (getprop(node, name, 1, &blen, (void **)&buffer) != 0)
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blen = 0;
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buffer[blen] = '\0'; /* usually unnecessary */
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return (buffer);
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}
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/*
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* Fetch an integer (or pointer) property.
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* The return value is the property, or the default if there was none.
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*/
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int
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getpropint(node, name, deflt)
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int node;
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char *name;
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int deflt;
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{
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int intbuf, *ip = &intbuf;
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int len;
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if (getprop(node, name, sizeof(int), &len, (void **)&ip) != 0)
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return (deflt);
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return (*ip);
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}
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int
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firstchild(node)
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int node;
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{
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return (promvec->pv_nodeops->no_child(node));
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}
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int
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nextsibling(node)
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int node;
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{
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return (promvec->pv_nodeops->no_nextnode(node));
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}
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/*
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* search_prom() recursively searches a PROM tree for a given node
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*/
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int
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search_prom(rootnode, name)
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int rootnode;
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char *name;
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{
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int rtnnode;
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int node = rootnode;
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char buf[32];
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if (node == findroot() ||
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!strcmp("hierarchical", getpropstringA(node, "device_type", buf)))
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node = firstchild(node);
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if (node == 0)
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panic("search_prom: null node");
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do {
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if (strcmp(getpropstringA(node, "name", buf), name) == 0)
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return (node);
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if (node_has_property(node,"device_type") &&
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(strcmp(getpropstringA(node, "device_type", buf),
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"hierarchical") == 0
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|| strcmp(getpropstringA(node, "name", buf), "iommu") == 0)
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&& (rtnnode = search_prom(node, name)) != 0)
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return (rtnnode);
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} while ((node = nextsibling(node)));
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return (0);
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}
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/*
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* Translate device path to node
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*/
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int
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opennode(path)
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char *path;
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{
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int fd;
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if (promvec->pv_romvec_vers < 2) {
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printf("WARNING: opennode not valid on sun4! %s\n", path);
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return (0);
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}
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fd = promvec->pv_v2devops.v2_open(path);
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if (fd == 0)
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return (0);
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return (promvec->pv_v2devops.v2_fd_phandle(fd));
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}
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/*
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* Determine whether a node has the given property.
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*/
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int
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node_has_property(node, prop)
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int node;
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const char *prop;
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{
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return ((*promvec->pv_nodeops->no_proplen)(node, (caddr_t)prop) != -1);
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}
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/*
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* Pass a string to the FORTH PROM to be interpreted.
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* (Note: may fail silently)
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*/
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void
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rominterpret(s)
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char *s;
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{
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if (promvec->pv_romvec_vers < 2)
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promvec->pv_fortheval.v0_eval(strlen(s), s);
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else
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promvec->pv_fortheval.v2_eval(s);
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}
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void
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romhalt()
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{
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*promvec->pv_synchook = NULL;
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#if defined(SUN4M)
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if (0 && CPU_ISSUN4M) {
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extern void srmmu_restore_prom_ctx __P((void));
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srmmu_restore_prom_ctx();
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}
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#endif
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promvec->pv_halt();
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panic("PROM exit failed");
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}
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void
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romboot(str)
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char *str;
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{
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*promvec->pv_synchook = NULL;
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promvec->pv_reboot(str);
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panic("PROM boot failed");
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}
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void
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callrom()
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{
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promvec->pv_abort();
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}
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/*
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* Start a cpu.
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*/
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void
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rom_cpustart(node, ctxtab, ctx, pc)
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int node, ctx;
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struct openprom_addr *ctxtab;
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caddr_t pc;
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{
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(*promvec->pv_v3cpustart)(node, ctxtab, ctx, pc);
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}
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void
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rom_cpustop(node)
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int node;
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{
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(*promvec->pv_v3cpustop)(node);
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}
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void
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rom_cpuidle(node)
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int node;
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{
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(*promvec->pv_v3cpuidle)(node);
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}
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void
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rom_cpuresume(node)
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int node;
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{
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(*promvec->pv_v3cpuresume)(node);
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}
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