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