/* SPDX-License-Identifier: GPL-2.0+ */ #ifndef _LINUX_OF_PRIVATE_H #define _LINUX_OF_PRIVATE_H /* * Private symbols used by OF support code * * Paul Mackerras August 1996. * Copyright (C) 1996-2005 Paul Mackerras. */ #define FDT_ALIGN_SIZE … /** * struct alias_prop - Alias property in 'aliases' node * @link: List node to link the structure in aliases_lookup list * @alias: Alias property name * @np: Pointer to device_node that the alias stands for * @id: Index value from end of alias name * @stem: Alias string without the index * * The structure represents one alias property of 'aliases' node as * an entry in aliases_lookup list. */ struct alias_prop { … }; #if defined(CONFIG_SPARC) #define OF_ROOT_NODE_ADDR_CELLS_DEFAULT … #else #define OF_ROOT_NODE_ADDR_CELLS_DEFAULT … #endif #define OF_ROOT_NODE_SIZE_CELLS_DEFAULT … extern struct mutex of_mutex; extern raw_spinlock_t devtree_lock; extern struct list_head aliases_lookup; extern struct kset *of_kset; #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, struct property *prop); void __of_update_property_sysfs(struct device_node *np, struct property *newprop, 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, struct property *prop) {} static inline void __of_update_property_sysfs(struct device_node *np, struct property *newprop, 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); /** * 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(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, struct property *prop); /* illegal phandle value (set when unresolved) */ #define OF_PHANDLE_ILLEGAL … /* iterators for transactions, used for overlays */ /* forward iterator */ #define for_each_transaction_entry(_oft, _te) … /* reverse iterator */ #define for_each_transaction_entry_reverse(_oft, _te) … 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 fdt_init_reserved_mem(void); bool of_fdt_device_is_available(const void *blob, unsigned long node); #endif /* _LINUX_OF_PRIVATE_H */
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