diff options
Diffstat (limited to 'include/linux/of.h')
| -rw-r--r-- | include/linux/of.h | 62 |
1 files changed, 44 insertions, 18 deletions
diff --git a/include/linux/of.h b/include/linux/of.h index e7facd8fbce8..a367e19bb3af 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -19,6 +19,11 @@ #include <linux/bitops.h> #include <linux/kref.h> #include <linux/mod_devicetable.h> +#include <linux/spinlock.h> + +#include <asm/byteorder.h> + +#ifdef CONFIG_OF typedef u32 phandle; typedef u32 ihandle; @@ -39,10 +44,7 @@ struct of_irq_controller; struct device_node { const char *name; const char *type; - phandle node; -#if !defined(CONFIG_SPARC) - phandle linux_phandle; -#endif + phandle phandle; char *full_name; struct property *properties; @@ -63,6 +65,11 @@ struct device_node { #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); @@ -73,12 +80,6 @@ static inline void of_node_set_flag(struct device_node *n, unsigned long flag) set_bit(flag, &n->_flags); } -static inline void -set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de) -{ - dn->pde = de; -} - extern struct device_node *of_find_all_nodes(struct device_node *prev); #if defined(CONFIG_SPARC) @@ -101,26 +102,36 @@ extern void of_node_put(struct device_node *node); */ /* Helper to read a big number; size is in cells (not bytes) */ -static inline u64 of_read_number(const u32 *cell, int size) +static inline u64 of_read_number(const __be32 *cell, int size) { u64 r = 0; while (size--) - r = (r << 32) | *(cell++); + r = (r << 32) | be32_to_cpu(*(cell++)); return r; } /* Like of_read_number, but we want an unsigned long result */ -#ifdef CONFIG_PPC32 -static inline unsigned long of_read_ulong(const u32 *cell, int size) +static inline unsigned long of_read_ulong(const __be32 *cell, int size) { - return cell[size-1]; + /* toss away upper bits if unsigned long is smaller than u64 */ + return of_read_number(cell, size); } -#else -#define of_read_ulong(cell, size) of_read_number(cell, size) -#endif #include <asm/prom.h> +/* 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) strcasecmp((s1), (s2)) +#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 */ @@ -187,4 +198,19 @@ 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 */ |