2 * Definitions for talking to the Open Firmware PROM on
3 * Power Macintosh computers.
5 * Copyright (C) 1996 Paul Mackerras.
11 #include <linux/config.h>
12 #include <linux/types.h>
17 struct address_range {
23 struct interrupt_info {
25 int sense; /* +ve/-ve logic, edge or level, etc. */
37 struct property *next;
41 * Note: don't change this structure for now or you'll break BootX !
48 struct address_range *addrs;
50 struct interrupt_info *intrs;
52 struct property *properties;
53 struct device_node *parent;
54 struct device_node *child;
55 struct device_node *sibling;
56 struct device_node *next; /* next device of same type */
57 struct device_node *allnext; /* next in list of all nodes */
61 typedef void (*prom_entry)(struct prom_args *);
63 /* OBSOLETE: Old style node lookup */
64 extern struct device_node *find_devices(const char *name);
65 extern struct device_node *find_type_devices(const char *type);
66 extern struct device_node *find_path_device(const char *path);
67 extern struct device_node *find_compatible_devices(const char *type,
69 extern struct device_node *find_all_nodes(void);
71 /* New style node lookup */
72 extern struct device_node *of_find_node_by_name(struct device_node *from,
74 extern struct device_node *of_find_node_by_type(struct device_node *from,
76 extern struct device_node *of_find_compatible_node(struct device_node *from,
77 const char *type, const char *compat);
78 extern struct device_node *of_find_node_by_path(const char *path);
79 extern struct device_node *of_find_all_nodes(struct device_node *prev);
80 extern struct device_node *of_get_parent(const struct device_node *node);
81 extern struct device_node *of_get_next_child(const struct device_node *node,
82 struct device_node *prev);
83 extern struct device_node *of_node_get(struct device_node *node);
84 extern void of_node_put(struct device_node *node);
86 /* Other Prototypes */
87 extern void abort(void);
88 extern unsigned long prom_init(int, int, prom_entry);
89 extern void prom_print(const char *msg);
90 extern void relocate_nodes(void);
91 extern void finish_device_tree(void);
92 extern int device_is_compatible(struct device_node *device, const char *);
93 extern int machine_is_compatible(const char *compat);
94 extern unsigned char *get_property(struct device_node *node, const char *name,
96 extern void prom_add_property(struct device_node* np, struct property* prop);
97 extern void prom_get_irq_senses(unsigned char *, int, int);
98 extern int prom_n_addr_cells(struct device_node* np);
99 extern int prom_n_size_cells(struct device_node* np);
101 extern struct resource*
102 request_OF_resource(struct device_node* node, int index, const char* name_postfix);
103 extern int release_OF_resource(struct device_node* node, int index);
105 extern void print_properties(struct device_node *node);
106 extern int call_rtas(const char *service, int nargs, int nret,
107 unsigned long *outputs, ...);
110 * PCI <-> OF matching functions
114 extern int pci_device_from_OF_node(struct device_node *node,
116 extern struct device_node* pci_busdev_to_OF_node(struct pci_bus *, int);
117 extern struct device_node* pci_device_to_OF_node(struct pci_dev *);
118 extern void pci_create_OF_bus_map(void);
121 * When we call back to the Open Firmware client interface, we usually
122 * have to do that before the kernel is relocated to its final location
123 * (this is because we can't use OF after we have overwritten the
124 * exception vectors with our exception handlers). These macros assist
125 * in performing the address calculations that we need to do to access
126 * data when the kernel is running at an address that is different from
127 * the address that the kernel is linked at. The reloc_offset() function
128 * returns the difference between these two addresses and the macros
129 * simplify the process of adding or subtracting this offset to/from
130 * pointer values. See arch/ppc/kernel/prom.c for how these are used.
132 extern unsigned long reloc_offset(void);
133 extern unsigned long add_reloc_offset(unsigned long);
134 extern unsigned long sub_reloc_offset(unsigned long);
136 #define PTRRELOC(x) ((typeof(x))add_reloc_offset((unsigned long)(x)))
137 #define PTRUNRELOC(x) ((typeof(x))sub_reloc_offset((unsigned long)(x)))
139 #endif /* _PPC_PROM_H */
140 #endif /* __KERNEL__ */