diff options
Diffstat (limited to 'drivers/of/of_private.h')
| -rw-r--r-- | drivers/of/of_private.h | 91 |
1 files changed, 71 insertions, 20 deletions
diff --git a/drivers/of/of_private.h b/drivers/of/of_private.h index edc682249c00..df0bb00349e0 100644 --- a/drivers/of/of_private.h +++ b/drivers/of/of_private.h @@ -8,6 +8,9 @@ * Copyright (C) 1996-2005 Paul Mackerras. */ +#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 @@ -36,9 +39,13 @@ struct alias_prop { #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); @@ -57,12 +64,18 @@ static inline int of_property_notify(int action, struct device_node *np, } #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(struct device_node *node); +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_remove_property_sysfs(struct device_node *np, const struct property *prop); void __of_update_property_sysfs(struct device_node *np, struct property *newprop, - struct property *oldprop); + const struct property *oldprop); int __of_attach_node_sysfs(struct device_node *np); void __of_detach_node_sysfs(struct device_node *np); #else @@ -70,9 +83,9 @@ static inline int __of_add_property_sysfs(struct device_node *np, struct propert { return 0; } -static inline void __of_remove_property_sysfs(struct device_node *np, struct property *prop) {} +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, struct property *oldprop) {} + struct property *newprop, const struct property *oldprop) {} static inline int __of_attach_node_sysfs(struct device_node *np) { return 0; @@ -106,6 +119,8 @@ extern void *__unflatten_device_tree(const void *blob, 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. * @@ -114,10 +129,11 @@ extern void *__unflatten_device_tree(const void *blob, * 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, +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); @@ -125,22 +141,14 @@ struct device_node *__of_find_node_by_full_path(struct device_node *node, 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_add_property_sysfs(struct device_node *np, - struct property *prop); extern int __of_remove_property(struct device_node *np, struct property *prop); -extern void __of_remove_property_sysfs(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_update_property_sysfs(struct device_node *np, - struct property *newprop, struct property *oldprop); -extern int __of_attach_node_sysfs(struct device_node *np); extern void __of_detach_node(struct device_node *np); -extern void __of_detach_node_sysfs(struct device_node *np); extern void __of_sysfs_remove_bin_file(struct device_node *np, - struct property *prop); + const struct property *prop); /* illegal phandle value (set when unresolved) */ #define OF_PHANDLE_ILLEGAL 0xdeadbeef @@ -157,15 +165,58 @@ extern void __of_sysfs_remove_bin_file(struct device_node *np, extern int of_bus_n_addr_cells(struct device_node *np); extern int of_bus_n_size_cells(struct device_node *np); -#ifdef CONFIG_OF_ADDRESS -extern int of_dma_get_range(struct device_node *np, u64 *dma_addr, - u64 *paddr, u64 *size); +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, u64 *dma_addr, - u64 *paddr, u64 *size) +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 */ |