linux-headers/arch/e2k/include/asm/oplib.h

91 lines
3.0 KiB
C

/* $Id: oplib.h,v 1.2 2007/09/05 12:05:52 kostin Exp $
* oplib.h: Describes the interface and available routines in the
* Linux Prom library.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 2005 Alexander Shmelev (ashmelev@task.sun.mcst.ru)
*/
#ifndef __OPLIB_H
#define __OPLIB_H
#include "openprom.h"
#include <linux/spinlock.h>
/* Root node of the prom device tree, this stays constant after
* initialization is complete.
*/
extern int prom_root_node;
/* The functions... */
/* PROM device tree traversal functions... */
/* Get the child node of the given node, or zero if no child exists. */
extern int prom_getchild(int parent_node);
/* Get the next sibling node of the given node, or zero if no further
* siblings exist.
*/
extern int prom_getsibling(int node);
/* Get the length, at the passed node, of the given property type.
* Returns -1 on error (ie. no such property at this node).
*/
extern int prom_getproplen(int thisnode, const char *property);
/* Fetch the requested property using the given buffer. Returns
* the number of bytes the prom put into your buffer or -1 on error.
*/
extern int prom_getproperty(int thisnode, const char *property,
char *prop_buffer, int propbuf_size);
/* Acquire an integer property. */
extern int prom_getint(int node, char *property);
/* Acquire an integer property, with a default value. */
extern int prom_getintdefault(int node, char *property, int defval);
/* Acquire a boolean property, 0=FALSE 1=TRUE. */
extern int prom_getbool(int node, char *prop);
/* Acquire a string property, null string on error. */
extern void prom_getstring(int node, char *prop, char *buf, int bufsize);
/* Does the passed node have the given "name"? YES=1 NO=0 */
extern int prom_nodematch(int thisnode, char *name);
/* Puts in buffer a prom name in the form name@x,y or name (x for which_io
* and y for first regs phys address
*/
extern int prom_getname(int node, char *buf, int buflen);
/* Search all siblings starting at the passed node for "name" matching
* the given string. Returns the node on success, zero on failure.
*/
extern int prom_searchsiblings(int node_start, char *name);
/* Return the first property type, as a string, for the given node.
* Returns a null string on error.
*/
extern char *prom_firstprop(int node, char *buffer);
/* Returns the next property after the passed property for the given
* node. Returns null string on failure.
*/
extern char *prom_nextprop(int node, char *prev_property, char *buffer);
/* Returns phandle of the path specified */
extern int prom_finddevice(char *name);
/* Returns 1 if the specified node has given property. */
extern int prom_node_has_property(int node, char *property);
/* Set the indicated property at the given node with the passed value.
* Returns the number of bytes of your value that the prom took.
*/
extern int prom_setprop(int node, const char *prop_name, char *prop_value,
int value_size);
#endif /* !(__OPLIB_H) */