1 files changed, 193 insertions, 7 deletions

diff --git a/drivers/of/of_private.h b/drivers/of/of_private.h
index ff350c8fa7ac..df0bb00349e0 100644
--- a/drivers/of/of_private.h
+++ b/drivers/of/of_private.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 #ifndef _LINUX_OF_PRIVATE_H
 #define _LINUX_OF_PRIVATE_H
 /*
@@ -5,13 +6,11 @@
  *
  * Paul Mackerras	August 1996.
  * Copyright (C) 1996-2005 Paul Mackerras.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
  */
 
+#define FDT_ALIGN_SIZE 8
+#define MAX_RESERVED_REGIONS    64
+
 /**
  * struct alias_prop - Alias property in 'aliases' node
  * @link:	List node to link the structure in aliases_lookup list
@@ -28,9 +27,196 @@ struct alias_prop {
 	const char *alias;
 	struct device_node *np;
 	int id;
-	char stem[0];
+	char stem[];
 };
 
-extern struct mutex of_aliases_mutex;
+#if defined(CONFIG_SPARC)
+#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 2
+#else
+#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1
+#endif
+
+#define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1
+
+extern struct mutex of_mutex;
+extern raw_spinlock_t devtree_lock;
 extern struct list_head aliases_lookup;
+extern struct kset *of_kset;
+
+struct kunit;
+extern void of_root_kunit_skip(struct kunit *test);
+
+#if defined(CONFIG_OF_DYNAMIC)
+extern int of_property_notify(int action, struct device_node *np,
+			      struct property *prop, struct property *old_prop);
+extern void of_node_release(struct kobject *kobj);
+extern int __of_changeset_apply_entries(struct of_changeset *ocs,
+					int *ret_revert);
+extern int __of_changeset_apply_notify(struct of_changeset *ocs);
+extern int __of_changeset_revert_entries(struct of_changeset *ocs,
+					 int *ret_apply);
+extern int __of_changeset_revert_notify(struct of_changeset *ocs);
+#else /* CONFIG_OF_DYNAMIC */
+static inline int of_property_notify(int action, struct device_node *np,
+				     struct property *prop, struct property *old_prop)
+{
+	return 0;
+}
+#endif /* CONFIG_OF_DYNAMIC */
+
+#if defined(CONFIG_OF_DYNAMIC) && defined(CONFIG_OF_ADDRESS)
+void of_platform_register_reconfig_notifier(void);
+#else
+static inline void of_platform_register_reconfig_notifier(void) { }
+#endif
+
+#if defined(CONFIG_OF_KOBJ)
+int of_node_is_attached(const struct device_node *node);
+int __of_add_property_sysfs(struct device_node *np, struct property *pp);
+void __of_remove_property_sysfs(struct device_node *np, const struct property *prop);
+void __of_update_property_sysfs(struct device_node *np, struct property *newprop,
+		const struct property *oldprop);
+int __of_attach_node_sysfs(struct device_node *np);
+void __of_detach_node_sysfs(struct device_node *np);
+#else
+static inline int __of_add_property_sysfs(struct device_node *np, struct property *pp)
+{
+	return 0;
+}
+static inline void __of_remove_property_sysfs(struct device_node *np, const struct property *prop) {}
+static inline void __of_update_property_sysfs(struct device_node *np,
+		struct property *newprop, const struct property *oldprop) {}
+static inline int __of_attach_node_sysfs(struct device_node *np)
+{
+	return 0;
+}
+static inline void __of_detach_node_sysfs(struct device_node *np) {}
+#endif
+
+#if defined(CONFIG_OF_RESOLVE)
+int of_resolve_phandles(struct device_node *tree);
+#endif
+
+void __of_phandle_cache_inv_entry(phandle handle);
+
+#if defined(CONFIG_OF_OVERLAY)
+void of_overlay_mutex_lock(void);
+void of_overlay_mutex_unlock(void);
+#else
+static inline void of_overlay_mutex_lock(void) {};
+static inline void of_overlay_mutex_unlock(void) {};
+#endif
+
+#if defined(CONFIG_OF_UNITTEST) && defined(CONFIG_OF_OVERLAY)
+extern void __init unittest_unflatten_overlay_base(void);
+#else
+static inline void unittest_unflatten_overlay_base(void) {};
+#endif
+
+extern void *__unflatten_device_tree(const void *blob,
+			      struct device_node *dad,
+			      struct device_node **mynodes,
+			      void *(*dt_alloc)(u64 size, u64 align),
+			      bool detached);
+
+void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align));
+
+/**
+ * General utilities for working with live trees.
+ *
+ * All functions with two leading underscores operate
+ * without taking node references, so you either have to
+ * own the devtree lock or work on detached trees only.
+ */
+struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags);
+void __of_prop_free(struct property *prop);
+struct device_node *__of_node_dup(const struct device_node *np,
+				  const char *full_name);
+
+struct device_node *__of_find_node_by_path(const struct device_node *parent,
+						const char *path);
+struct device_node *__of_find_node_by_full_path(struct device_node *node,
+						const char *path);
+
+extern const void *__of_get_property(const struct device_node *np,
+				     const char *name, int *lenp);
+extern int __of_add_property(struct device_node *np, struct property *prop);
+extern int __of_remove_property(struct device_node *np, struct property *prop);
+extern int __of_update_property(struct device_node *np,
+		struct property *newprop, struct property **oldprop);
+
+extern void __of_detach_node(struct device_node *np);
+
+extern void __of_sysfs_remove_bin_file(struct device_node *np,
+				       const struct property *prop);
+
+/* illegal phandle value (set when unresolved) */
+#define OF_PHANDLE_ILLEGAL	0xdeadbeef
+
+/* iterators for transactions, used for overlays */
+/* forward iterator */
+#define for_each_transaction_entry(_oft, _te) \
+	list_for_each_entry(_te, &(_oft)->te_list, node)
+
+/* reverse iterator */
+#define for_each_transaction_entry_reverse(_oft, _te) \
+	list_for_each_entry_reverse(_te, &(_oft)->te_list, node)
+
+extern int of_bus_n_addr_cells(struct device_node *np);
+extern int of_bus_n_size_cells(struct device_node *np);
+
+const __be32 *of_irq_parse_imap_parent(const __be32 *imap, int len,
+				       struct of_phandle_args *out_irq);
+
+struct bus_dma_region;
+#if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_HAS_DMA)
+int of_dma_get_range(struct device_node *np,
+		const struct bus_dma_region **map);
+struct device_node *__of_get_dma_parent(const struct device_node *np);
+#else
+static inline int of_dma_get_range(struct device_node *np,
+		const struct bus_dma_region **map)
+{
+	return -ENODEV;
+}
+static inline struct device_node *__of_get_dma_parent(const struct device_node *np)
+{
+	return of_get_parent(np);
+}
+#endif
+
+int fdt_scan_reserved_mem(void);
+void __init fdt_scan_reserved_mem_reg_nodes(void);
+
+bool of_fdt_device_is_available(const void *blob, unsigned long node);
+
+/* Max address size we deal with */
+#define OF_MAX_ADDR_CELLS	4
+#define OF_CHECK_ADDR_COUNT(na)	((na) > 0 && (na) <= OF_MAX_ADDR_CELLS)
+#define OF_CHECK_COUNTS(na, ns)	(OF_CHECK_ADDR_COUNT(na) && (ns) > 0)
+
+/* Debug utility */
+#ifdef DEBUG
+static void __maybe_unused of_dump_addr(const char *s, const __be32 *addr, int na)
+{
+	pr_debug("%s", s);
+	while (na--)
+		pr_cont(" %08x", be32_to_cpu(*(addr++)));
+	pr_cont("\n");
+}
+#else
+static void __maybe_unused of_dump_addr(const char *s, const __be32 *addr, int na) { }
+#endif
+
+static inline bool is_pseudo_property(const char *prop_name)
+{
+	return !of_prop_cmp(prop_name, "name") ||
+		!of_prop_cmp(prop_name, "phandle") ||
+		!of_prop_cmp(prop_name, "linux,phandle");
+}
+
+#if IS_ENABLED(CONFIG_KUNIT)
+int __of_address_resource_bounds(struct resource *r, u64 start, u64 size);
+#endif
+
 #endif /* _LINUX_OF_PRIVATE_H */