Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 377 insertions, 0 deletions

diff --git a/arch/sparc64/prom/tree.c b/arch/sparc64/prom/tree.c
new file mode 100644
index 000000000000..ccf73258ebf7
--- /dev/null
+++ b/arch/sparc64/prom/tree.c
@@ -0,0 +1,377 @@
+/* $Id: tree.c,v 1.10 1998/01/10 22:39:00 ecd Exp $
+ * 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>
+
+/* 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 ("peer", 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, 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, 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 ("getprop", 
+                                  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, 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, 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, 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, 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, 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, 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;
+}
+
+/* Gets name in the {name@x,yyyyy|name (if no reg)} form */
+int 
+prom_getname (int node, char *buffer, int len)
+{
+        int i, sbus = 0;
+        int pci = 0, ebus = 0, ide = 0;
+        struct linux_prom_registers *reg;
+        struct linux_prom64_registers reg64[PROMREG_MAX];
+        
+        for (sbus = prom_getparent (node); sbus; sbus = prom_getparent (sbus)) {
+                i = prom_getproperty (sbus, "name", buffer, len);
+                if (i > 0) {
+                        buffer [i] = 0;
+                        if (!strcmp (buffer, "sbus"))
+                                goto getit;
+                }
+        }
+        if ((pci = prom_getparent (node))) {
+                i = prom_getproperty (pci, "name", buffer, len);
+                if (i > 0) {
+                        buffer [i] = 0;
+                        if (!strcmp (buffer, "pci"))
+                                goto getit;
+                }
+                pci = 0;
+        }
+        if ((ebus = prom_getparent (node))) {
+                i = prom_getproperty (ebus, "name", buffer, len);
+                if (i > 0) {
+                        buffer[i] = 0;
+                        if (!strcmp (buffer, "ebus"))
+                                goto getit;
+                }
+                ebus = 0;
+        }
+        if ((ide = prom_getparent (node))) {
+                i = prom_getproperty (ide, "name", buffer, len);
+                if (i > 0) {
+                        buffer [i] = 0;
+                        if (!strcmp (buffer, "ide"))
+                                goto getit;
+                }
+                ide = 0;
+        }
+getit:
+        i = prom_getproperty (node, "name", buffer, len);
+        if (i <= 0) {
+                buffer [0] = 0;
+                return -1;
+        }
+        buffer [i] = 0;
+        len -= i;
+        i = prom_getproperty (node, "reg", (char *)reg64, sizeof (reg64));
+        if (i <= 0) return 0;
+        if (len < 16) return -1;
+        buffer = strchr (buffer, 0);
+        if (sbus) {
+                reg = (struct linux_prom_registers *)reg64;
+                sprintf (buffer, "@%x,%x", reg[0].which_io, (uint)reg[0].phys_addr);
+        } else if (pci) {
+                int dev, fn;
+                reg = (struct linux_prom_registers *)reg64;
+                fn = (reg[0].which_io >> 8) & 0x07;
+                dev = (reg[0].which_io >> 11) & 0x1f;
+                if (fn)
+                        sprintf (buffer, "@%x,%x", dev, fn);
+                else
+                        sprintf (buffer, "@%x", dev);
+        } else if (ebus) {
+                reg = (struct linux_prom_registers *)reg64;
+                sprintf (buffer, "@%x,%x", reg[0].which_io, reg[0].phys_addr);
+        } else if (ide) {
+                reg = (struct linux_prom_registers *)reg64;
+                sprintf (buffer, "@%x,%x", reg[0].which_io, reg[0].phys_addr);
+        } else if (i == 4) {    /* Happens on 8042's children on Ultra/PCI. */
+                reg = (struct linux_prom_registers *)reg64;
+                sprintf (buffer, "@%x", reg[0].which_io);
+        } else {
+                sprintf (buffer, "@%x,%x",
+                         (unsigned int)(reg64[0].phys_addr >> 36),
+                         (unsigned int)(reg64[0].phys_addr));
+        }
+        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, 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(char *name)
+{
+        if(!name) return 0;
+        return p1275_cmd ("finddevice", P1275_ARG(0,P1275_ARG_IN_STRING)|
+                                        P1275_INOUT(1, 1), 
+                                        name);
+}
+
+int prom_node_has_property(int node, 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, char *pname, char *value, int size)
+{
+        if(size == 0) return 0;
+        if((pname == 0) || (value == 0)) return 0;
+        
+        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(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;
+}