1 files changed, 299 insertions, 0 deletions
diff --git a/arch/sparc/prom/tree_64.c b/arch/sparc/prom/tree_64.c
new file mode 100644
index 00000000000..281aea44790
--- /dev/null
+++ b/arch/sparc/prom/tree_64.c
@@ -0,0 +1,299 @@
+/*
+ * tree.c: Basic device tree traversal/scanning for the Linux
+ *         prom library.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/string.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/ldc.h>
+
+/* Return the child of node 'node' or zero if no this node has no
+ * direct descendent.
+ */
+inline int __prom_getchild(int node)
+{
+	return p1275_cmd ("child", P1275_INOUT(1, 1), node);
+}
+
+inline int prom_getchild(int node)
+{
+	int cnode;
+
+	if(node == -1) return 0;
+	cnode = __prom_getchild(node);
+	if(cnode == -1) return 0;
+	return (int)cnode;
+}
+
+inline int prom_getparent(int node)
+{
+	int cnode;
+
+	if(node == -1) return 0;
+	cnode = p1275_cmd ("parent", P1275_INOUT(1, 1), node);
+	if(cnode == -1) return 0;
+	return (int)cnode;
+}
+
+/* Return the next sibling of node 'node' or zero if no more siblings
+ * at this level of depth in the tree.
+ */
+inline int __prom_getsibling(int node)
+{
+	return p1275_cmd(prom_peer_name, P1275_INOUT(1, 1), node);
+}
+
+inline int prom_getsibling(int node)
+{
+	int sibnode;
+
+	if (node == -1)
+		return 0;
+	sibnode = __prom_getsibling(node);
+	if (sibnode == -1)
+		return 0;
+
+	return sibnode;
+}
+
+/* Return the length in bytes of property 'prop' at node 'node'.
+ * Return -1 on error.
+ */
+inline int prom_getproplen(int node, const char *prop)
+{
+	if((!node) || (!prop)) return -1;
+	return p1275_cmd ("getproplen", 
+			  P1275_ARG(1,P1275_ARG_IN_STRING)|
+			  P1275_INOUT(2, 1), 
+			  node, prop);
+}
+
+/* Acquire a property 'prop' at node 'node' and place it in
+ * 'buffer' which has a size of 'bufsize'.  If the acquisition
+ * was successful the length will be returned, else -1 is returned.
+ */
+inline int prom_getproperty(int node, const char *prop,
+			    char *buffer, int bufsize)
+{
+	int plen;
+
+	plen = prom_getproplen(node, prop);
+	if ((plen > bufsize) || (plen == 0) || (plen == -1)) {
+		return -1;
+	} else {
+		/* Ok, things seem all right. */
+		return p1275_cmd(prom_getprop_name, 
+				 P1275_ARG(1,P1275_ARG_IN_STRING)|
+				 P1275_ARG(2,P1275_ARG_OUT_BUF)|
+				 P1275_INOUT(4, 1), 
+				 node, prop, buffer, P1275_SIZE(plen));
+	}
+}
+
+/* Acquire an integer property and return its value.  Returns -1
+ * on failure.
+ */
+inline int prom_getint(int node, const char *prop)
+{
+	int intprop;
+
+	if(prom_getproperty(node, prop, (char *) &intprop, sizeof(int)) != -1)
+		return intprop;
+
+	return -1;
+}
+
+/* Acquire an integer property, upon error return the passed default
+ * integer.
+ */
+
+int prom_getintdefault(int node, const char *property, int deflt)
+{
+	int retval;
+
+	retval = prom_getint(node, property);
+	if(retval == -1) return deflt;
+
+	return retval;
+}
+
+/* Acquire a boolean property, 1=TRUE 0=FALSE. */
+int prom_getbool(int node, const char *prop)
+{
+	int retval;
+
+	retval = prom_getproplen(node, prop);
+	if(retval == -1) return 0;
+	return 1;
+}
+
+/* Acquire a property whose value is a string, returns a null
+ * string on error.  The char pointer is the user supplied string
+ * buffer.
+ */
+void prom_getstring(int node, const char *prop, char *user_buf, int ubuf_size)
+{
+	int len;
+
+	len = prom_getproperty(node, prop, user_buf, ubuf_size);
+	if(len != -1) return;
+	user_buf[0] = 0;
+	return;
+}
+
+
+/* Does the device at node 'node' have name 'name'?
+ * YES = 1   NO = 0
+ */
+int prom_nodematch(int node, const char *name)
+{
+	char namebuf[128];
+	prom_getproperty(node, "name", namebuf, sizeof(namebuf));
+	if(strcmp(namebuf, name) == 0) return 1;
+	return 0;
+}
+
+/* Search siblings at 'node_start' for a node with name
+ * 'nodename'.  Return node if successful, zero if not.
+ */
+int prom_searchsiblings(int node_start, const char *nodename)
+{
+
+	int thisnode, error;
+	char promlib_buf[128];
+
+	for(thisnode = node_start; thisnode;
+	    thisnode=prom_getsibling(thisnode)) {
+		error = prom_getproperty(thisnode, "name", promlib_buf,
+					 sizeof(promlib_buf));
+		/* Should this ever happen? */
+		if(error == -1) continue;
+		if(strcmp(nodename, promlib_buf)==0) return thisnode;
+	}
+
+	return 0;
+}
+
+/* Return the first property type for node 'node'.
+ * buffer should be at least 32B in length
+ */
+inline char *prom_firstprop(int node, char *buffer)
+{
+	*buffer = 0;
+	if(node == -1) return buffer;
+	p1275_cmd ("nextprop", P1275_ARG(2,P1275_ARG_OUT_32B)|
+			       P1275_INOUT(3, 0), 
+			       node, (char *) 0x0, buffer);
+	return buffer;
+}
+
+/* Return the property type string after property type 'oprop'
+ * at node 'node' .  Returns NULL string if no more
+ * property types for this node.
+ */
+inline char *prom_nextprop(int node, const char *oprop, char *buffer)
+{
+	char buf[32];
+
+	if(node == -1) {
+		*buffer = 0;
+		return buffer;
+	}
+	if (oprop == buffer) {
+		strcpy (buf, oprop);
+		oprop = buf;
+	}
+	p1275_cmd ("nextprop", P1275_ARG(1,P1275_ARG_IN_STRING)|
+				    P1275_ARG(2,P1275_ARG_OUT_32B)|
+				    P1275_INOUT(3, 0), 
+				    node, oprop, buffer); 
+	return buffer;
+}
+
+int
+prom_finddevice(const char *name)
+{
+	if (!name)
+		return 0;
+	return p1275_cmd(prom_finddev_name,
+			 P1275_ARG(0,P1275_ARG_IN_STRING)|
+			 P1275_INOUT(1, 1), 
+			 name);
+}
+
+int prom_node_has_property(int node, const char *prop)
+{
+	char buf [32];
+        
+	*buf = 0;
+	do {
+		prom_nextprop(node, buf, buf);
+		if(!strcmp(buf, prop))
+			return 1;
+	} while (*buf);
+	return 0;
+}
+                                                                                           
+/* Set property 'pname' at node 'node' to value 'value' which has a length
+ * of 'size' bytes.  Return the number of bytes the prom accepted.
+ */
+int
+prom_setprop(int node, const char *pname, char *value, int size)
+{
+	if (size == 0)
+		return 0;
+	if ((pname == 0) || (value == 0))
+		return 0;
+	
+#ifdef CONFIG_SUN_LDOMS
+	if (ldom_domaining_enabled) {
+		ldom_set_var(pname, value);
+		return 0;
+	}
+#endif
+	return p1275_cmd ("setprop", P1275_ARG(1,P1275_ARG_IN_STRING)|
+					  P1275_ARG(2,P1275_ARG_IN_BUF)|
+					  P1275_INOUT(4, 1), 
+					  node, pname, value, P1275_SIZE(size));
+}
+
+inline int prom_inst2pkg(int inst)
+{
+	int node;
+	
+	node = p1275_cmd ("instance-to-package", P1275_INOUT(1, 1), inst);
+	if (node == -1) return 0;
+	return node;
+}
+
+/* Return 'node' assigned to a particular prom 'path'
+ * FIXME: Should work for v0 as well
+ */
+int
+prom_pathtoinode(const char *path)
+{
+	int node, inst;
+
+	inst = prom_devopen (path);
+	if (inst == 0) return 0;
+	node = prom_inst2pkg (inst);
+	prom_devclose (inst);
+	if (node == -1) return 0;
+	return node;
+}
+
+int prom_ihandle2path(int handle, char *buffer, int bufsize)
+{
+	return p1275_cmd("instance-to-path",
+			 P1275_ARG(1,P1275_ARG_OUT_BUF)|
+			 P1275_INOUT(3, 1),
+			 handle, buffer, P1275_SIZE(bufsize));
+}