X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Flinux%2Fof.h;h=f6d9cbc39c9ca684907940822ead7425c9f2c5da;hb=baed7fc9b580bd3fb8252ff1d9b36eaf1f86b670;hp=79886ade070f2e791274c92814bc04bfbcff4947;hpb=3f07af494dfa6de43137dae430431c9fbf929c0c;p=safe%2Fjmp%2Flinux-2.6 diff --git a/include/linux/of.h b/include/linux/of.h index 79886ad..f6d9cbc 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -17,14 +17,128 @@ */ #include #include +#include #include +#include + +#include + +#ifdef CONFIG_OF + +typedef u32 phandle; +typedef u32 ihandle; + +struct property { + char *name; + int length; + void *value; + struct property *next; + unsigned long _flags; + unsigned int unique_id; +}; + +#if defined(CONFIG_SPARC) +struct of_irq_controller; +#endif + +struct device_node { + const char *name; + const char *type; + phandle phandle; + char *full_name; + + struct property *properties; + struct property *deadprops; /* removed properties */ + struct device_node *parent; + struct device_node *child; + struct device_node *sibling; + struct device_node *next; /* next device of same type */ + struct device_node *allnext; /* next in list of all nodes */ + struct proc_dir_entry *pde; /* this node's proc directory */ + struct kref kref; + unsigned long _flags; + void *data; +#if defined(CONFIG_SPARC) + char *path_component_name; + unsigned int unique_id; + struct of_irq_controller *irq_trans; +#endif +}; + +/* Pointer for first entry in chain of all nodes. */ +extern struct device_node *allnodes; +extern struct device_node *of_chosen; +extern rwlock_t devtree_lock; + +static inline int of_node_check_flag(struct device_node *n, unsigned long flag) +{ + return test_bit(flag, &n->_flags); +} + +static inline void of_node_set_flag(struct device_node *n, unsigned long flag) +{ + set_bit(flag, &n->_flags); +} + +extern struct device_node *of_find_all_nodes(struct device_node *prev); + +#if defined(CONFIG_SPARC) +/* Dummy ref counting routines - to be implemented later */ +static inline struct device_node *of_node_get(struct device_node *node) +{ + return node; +} +static inline void of_node_put(struct device_node *node) +{ +} + +#else +extern struct device_node *of_node_get(struct device_node *node); +extern void of_node_put(struct device_node *node); +#endif + +/* + * OF address retreival & translation + */ + +/* Helper to read a big number; size is in cells (not bytes) */ +static inline u64 of_read_number(const __be32 *cell, int size) +{ + u64 r = 0; + while (size--) + r = (r << 32) | be32_to_cpu(*(cell++)); + return r; +} + +/* Like of_read_number, but we want an unsigned long result */ +static inline unsigned long of_read_ulong(const __be32 *cell, int size) +{ + /* toss away upper bits if unsigned long is smaller than u64 */ + return of_read_number(cell, size); +} #include +/* Default #address and #size cells. Allow arch asm/prom.h to override */ +#if !defined(OF_ROOT_NODE_ADDR_CELLS_DEFAULT) +#define OF_ROOT_NODE_ADDR_CELLS_DEFAULT 1 +#define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1 +#endif + +/* Default string compare functions, Allow arch asm/prom.h to override */ +#if !defined(of_compat_cmp) +#define of_compat_cmp(s1, s2, l) strncasecmp((s1), (s2), (l)) +#define of_prop_cmp(s1, s2) strcmp((s1), (s2)) +#define of_node_cmp(s1, s2) strcasecmp((s1), (s2)) +#endif + /* flag descriptions */ #define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */ #define OF_DETACHED 2 /* node has been detached from the device tree */ +#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags) +#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags) + #define OF_BAD_ADDR ((u64)-1) extern struct device_node *of_find_node_by_name(struct device_node *from, @@ -57,6 +171,12 @@ extern struct device_node *of_get_next_child(const struct device_node *node, for (child = of_get_next_child(parent, NULL); child != NULL; \ child = of_get_next_child(parent, child)) +extern struct device_node *of_find_node_with_property( + struct device_node *from, const char *prop_name); +#define for_each_node_with_property(dn, prop_name) \ + for (dn = of_find_node_with_property(NULL, prop_name); dn; \ + dn = of_find_node_with_property(dn, prop_name)) + extern struct property *of_find_property(const struct device_node *np, const char *name, int *lenp); @@ -71,5 +191,26 @@ extern int of_n_size_cells(struct device_node *np); extern const struct of_device_id *of_match_node( const struct of_device_id *matches, const struct device_node *node); extern int of_modalias_node(struct device_node *node, char *modalias, int len); +extern struct device_node *of_parse_phandle(struct device_node *np, + const char *phandle_name, + int index); +extern int of_parse_phandles_with_args(struct device_node *np, + const char *list_name, const char *cells_name, int index, + struct device_node **out_node, const void **out_args); + +extern int of_machine_is_compatible(const char *compat); + +extern int prom_add_property(struct device_node* np, struct property* prop); +extern int prom_remove_property(struct device_node *np, struct property *prop); +extern int prom_update_property(struct device_node *np, + struct property *newprop, + struct property *oldprop); + +#if defined(CONFIG_OF_DYNAMIC) +/* For updating the device tree at runtime */ +extern void of_attach_node(struct device_node *); +extern void of_detach_node(struct device_node *); +#endif +#endif /* CONFIG_OF */ #endif /* _LINUX_OF_H */