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 000000000000..281aea44790b
--- /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));
+}