Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Definitions for talking to the Open Firmware PROM on | |
3 | * Power Macintosh computers. | |
4 | * | |
5 | * Copyright (C) 1996 Paul Mackerras. | |
6 | */ | |
7 | #ifdef __KERNEL__ | |
8 | #ifndef _PPC_PROM_H | |
9 | #define _PPC_PROM_H | |
10 | ||
11 | #include <linux/config.h> | |
12 | #include <linux/types.h> | |
13 | ||
14 | typedef u32 phandle; | |
15 | typedef u32 ihandle; | |
16 | ||
1da177e4 LT |
17 | struct address_range { |
18 | unsigned int space; | |
19 | unsigned int address; | |
20 | unsigned int size; | |
21 | }; | |
22 | ||
23 | struct interrupt_info { | |
24 | int line; | |
25 | int sense; /* +ve/-ve logic, edge or level, etc. */ | |
26 | }; | |
27 | ||
28 | struct reg_property { | |
29 | unsigned int address; | |
30 | unsigned int size; | |
31 | }; | |
32 | ||
33 | struct property { | |
34 | char *name; | |
35 | int length; | |
36 | unsigned char *value; | |
37 | struct property *next; | |
38 | }; | |
39 | ||
40 | /* | |
41 | * Note: don't change this structure for now or you'll break BootX ! | |
42 | */ | |
43 | struct device_node { | |
44 | char *name; | |
45 | char *type; | |
46 | phandle node; | |
47 | int n_addrs; | |
48 | struct address_range *addrs; | |
49 | int n_intrs; | |
50 | struct interrupt_info *intrs; | |
51 | char *full_name; | |
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 */ | |
58 | }; | |
59 | ||
60 | struct prom_args; | |
61 | typedef void (*prom_entry)(struct prom_args *); | |
62 | ||
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, | |
68 | const char *compat); | |
69 | extern struct device_node *find_all_nodes(void); | |
70 | ||
71 | /* New style node lookup */ | |
72 | extern struct device_node *of_find_node_by_name(struct device_node *from, | |
73 | const char *name); | |
74 | extern struct device_node *of_find_node_by_type(struct device_node *from, | |
75 | const char *type); | |
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); | |
85 | ||
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, | |
95 | int *lenp); | |
183d0202 | 96 | extern int prom_add_property(struct device_node* np, struct property* prop); |
1da177e4 LT |
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); | |
100 | ||
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); | |
104 | ||
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, ...); | |
108 | ||
109 | /* | |
110 | * PCI <-> OF matching functions | |
111 | */ | |
112 | struct pci_bus; | |
113 | struct pci_dev; | |
114 | extern int pci_device_from_OF_node(struct device_node *node, | |
115 | u8* bus, u8* devfn); | |
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); | |
119 | ||
120 | /* | |
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. | |
131 | */ | |
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); | |
135 | ||
136 | #define PTRRELOC(x) ((typeof(x))add_reloc_offset((unsigned long)(x))) | |
137 | #define PTRUNRELOC(x) ((typeof(x))sub_reloc_offset((unsigned long)(x))) | |
138 | ||
139 | #endif /* _PPC_PROM_H */ | |
140 | #endif /* __KERNEL__ */ |