vmxnet3: Disable napi in suspend, reenable in resume.
[linux-2.6.git] / drivers / of / pdt.c
index 2fdb1b4..28295d0 100644 (file)
 #include <linux/of.h>
 #include <linux/of_pdt.h>
 #include <asm/prom.h>
-#include <asm/oplib.h>
 
-void __initdata (*prom_build_more)(struct device_node *dp,
+static struct of_pdt_ops *of_pdt_prom_ops __initdata;
+
+void __initdata (*of_pdt_build_more)(struct device_node *dp,
                struct device_node ***nextp);
 
 #if defined(CONFIG_SPARC)
@@ -52,14 +53,14 @@ static inline const char *of_pdt_node_name(struct device_node *dp)
 
 #endif /* !CONFIG_SPARC */
 
-static struct property * __init build_one_prop(phandle node, char *prev,
+static struct property * __init of_pdt_build_one_prop(phandle node, char *prev,
                                               char *special_name,
                                               void *special_val,
                                               int special_len)
 {
        static struct property *tmp = NULL;
        struct property *p;
-       const char *name;
+       int err;
 
        if (tmp) {
                p = tmp;
@@ -77,28 +78,20 @@ static struct property * __init build_one_prop(phandle node, char *prev,
                p->value = prom_early_alloc(special_len);
                memcpy(p->value, special_val, special_len);
        } else {
-               if (prev == NULL) {
-                       name = prom_firstprop(node, p->name);
-               } else {
-                       name = prom_nextprop(node, prev, p->name);
-               }
-
-               if (!name || strlen(name) == 0) {
+               err = of_pdt_prom_ops->nextprop(node, prev, p->name);
+               if (err) {
                        tmp = p;
                        return NULL;
                }
-#ifdef CONFIG_SPARC32
-               strcpy(p->name, name);
-#endif
-               p->length = prom_getproplen(node, p->name);
+               p->length = of_pdt_prom_ops->getproplen(node, p->name);
                if (p->length <= 0) {
                        p->length = 0;
                } else {
                        int len;
 
                        p->value = prom_early_alloc(p->length + 1);
-                       len = prom_getproperty(node, p->name, p->value,
-                                              p->length);
+                       len = of_pdt_prom_ops->getproperty(node, p->name,
+                                       p->value, p->length);
                        if (len <= 0)
                                p->length = 0;
                        ((unsigned char *)p->value)[p->length] = '\0';
@@ -107,17 +100,17 @@ static struct property * __init build_one_prop(phandle node, char *prev,
        return p;
 }
 
-static struct property * __init build_prop_list(phandle node)
+static struct property * __init of_pdt_build_prop_list(phandle node)
 {
        struct property *head, *tail;
 
-       head = tail = build_one_prop(node, NULL,
+       head = tail = of_pdt_build_one_prop(node, NULL,
                                     ".node", &node, sizeof(node));
 
-       tail->next = build_one_prop(node, NULL, NULL, NULL, 0);
+       tail->next = of_pdt_build_one_prop(node, NULL, NULL, NULL, 0);
        tail = tail->next;
        while(tail) {
-               tail->next = build_one_prop(node, tail->name,
+               tail->next = of_pdt_build_one_prop(node, tail->name,
                                            NULL, NULL, 0);
                tail = tail->next;
        }
@@ -125,21 +118,62 @@ static struct property * __init build_prop_list(phandle node)
        return head;
 }
 
-static char * __init get_one_property(phandle node, const char *name)
+static char * __init of_pdt_get_one_property(phandle node, const char *name)
 {
        char *buf = "<NULL>";
        int len;
 
-       len = prom_getproplen(node, name);
+       len = of_pdt_prom_ops->getproplen(node, name);
        if (len > 0) {
                buf = prom_early_alloc(len);
-               len = prom_getproperty(node, name, buf, len);
+               len = of_pdt_prom_ops->getproperty(node, name, buf, len);
+       }
+
+       return buf;
+}
+
+static char * __init of_pdt_try_pkg2path(phandle node)
+{
+       char *res, *buf = NULL;
+       int len;
+
+       if (!of_pdt_prom_ops->pkg2path)
+               return NULL;
+
+       if (of_pdt_prom_ops->pkg2path(node, buf, 0, &len))
+               return NULL;
+       buf = prom_early_alloc(len + 1);
+       if (of_pdt_prom_ops->pkg2path(node, buf, len, &len)) {
+               pr_err("%s: package-to-path failed\n", __func__);
+               return NULL;
        }
 
+       res = strrchr(buf, '/');
+       if (!res) {
+               pr_err("%s: couldn't find / in %s\n", __func__, buf);
+               return NULL;
+       }
+       return res+1;
+}
+
+/*
+ * When fetching the node's name, first try using package-to-path; if
+ * that fails (either because the arch hasn't supplied a PROM callback,
+ * or some other random failure), fall back to just looking at the node's
+ * 'name' property.
+ */
+static char * __init of_pdt_build_name(phandle node)
+{
+       char *buf;
+
+       buf = of_pdt_try_pkg2path(node);
+       if (!buf)
+               buf = of_pdt_get_one_property(node, "name");
+
        return buf;
 }
 
-static struct device_node * __init prom_create_node(phandle node,
+static struct device_node * __init of_pdt_create_node(phandle node,
                                                    struct device_node *parent)
 {
        struct device_node *dp;
@@ -153,18 +187,18 @@ static struct device_node * __init prom_create_node(phandle node,
 
        kref_init(&dp->kref);
 
-       dp->name = get_one_property(node, "name");
-       dp->type = get_one_property(node, "device_type");
+       dp->name = of_pdt_build_name(node);
+       dp->type = of_pdt_get_one_property(node, "device_type");
        dp->phandle = node;
 
-       dp->properties = build_prop_list(node);
+       dp->properties = of_pdt_build_prop_list(node);
 
        irq_trans_init(dp);
 
        return dp;
 }
 
-static char * __init build_full_name(struct device_node *dp)
+static char * __init of_pdt_build_full_name(struct device_node *dp)
 {
        int len, ourlen, plen;
        char *n;
@@ -184,7 +218,7 @@ static char * __init build_full_name(struct device_node *dp)
        return n;
 }
 
-static struct device_node * __init prom_build_tree(struct device_node *parent,
+static struct device_node * __init of_pdt_build_tree(struct device_node *parent,
                                                   phandle node,
                                                   struct device_node ***nextp)
 {
@@ -192,7 +226,7 @@ static struct device_node * __init prom_build_tree(struct device_node *parent,
        struct device_node *dp;
 
        while (1) {
-               dp = prom_create_node(node, parent);
+               dp = of_pdt_create_node(node, parent);
                if (!dp)
                        break;
 
@@ -209,31 +243,34 @@ static struct device_node * __init prom_build_tree(struct device_node *parent,
 #if defined(CONFIG_SPARC)
                dp->path_component_name = build_path_component(dp);
 #endif
-               dp->full_name = build_full_name(dp);
+               dp->full_name = of_pdt_build_full_name(dp);
 
-               dp->child = prom_build_tree(dp, prom_getchild(node), nextp);
+               dp->child = of_pdt_build_tree(dp,
+                               of_pdt_prom_ops->getchild(node), nextp);
 
-               if (prom_build_more)
-                       prom_build_more(dp, nextp);
+               if (of_pdt_build_more)
+                       of_pdt_build_more(dp, nextp);
 
-               node = prom_getsibling(node);
+               node = of_pdt_prom_ops->getsibling(node);
        }
 
        return ret;
 }
 
-void __init of_pdt_build_devicetree(phandle root_node)
+void __init of_pdt_build_devicetree(phandle root_node, struct of_pdt_ops *ops)
 {
        struct device_node **nextp;
 
-       allnodes = prom_create_node(root_node, NULL);
+       BUG_ON(!ops);
+       of_pdt_prom_ops = ops;
+
+       allnodes = of_pdt_create_node(root_node, NULL);
 #if defined(CONFIG_SPARC)
        allnodes->path_component_name = "";
 #endif
        allnodes->full_name = "/";
 
        nextp = &allnodes->allnext;
-       allnodes->child = prom_build_tree(allnodes,
-                                         prom_getchild(allnodes->phandle),
-                                         &nextp);
+       allnodes->child = of_pdt_build_tree(allnodes,
+                       of_pdt_prom_ops->getchild(allnodes->phandle), &nextp);
 }