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-rw-r--r--include/asm-powerpc/prom.h219
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diff --git a/include/asm-powerpc/prom.h b/include/asm-powerpc/prom.h
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1#ifndef _POWERPC_PROM_H
2#define _POWERPC_PROM_H
3#ifdef __KERNEL__
4
5/*
6 * Definitions for talking to the Open Firmware PROM on
7 * Power Macintosh computers.
8 *
9 * Copyright (C) 1996-2005 Paul Mackerras.
10 *
11 * Updates for PPC64 by Peter Bergner & David Engebretsen, IBM Corp.
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version
16 * 2 of the License, or (at your option) any later version.
17 */
18#include <linux/config.h>
19#include <linux/types.h>
20#include <linux/proc_fs.h>
21#include <asm/atomic.h>
22
23/* Definitions used by the flattened device tree */
24#define OF_DT_HEADER 0xd00dfeed /* marker */
25#define OF_DT_BEGIN_NODE 0x1 /* Start of node, full name */
26#define OF_DT_END_NODE 0x2 /* End node */
27#define OF_DT_PROP 0x3 /* Property: name off, size,
28 * content */
29#define OF_DT_NOP 0x4 /* nop */
30#define OF_DT_END 0x9
31
32#define OF_DT_VERSION 0x10
33
34/*
35 * This is what gets passed to the kernel by prom_init or kexec
36 *
37 * The dt struct contains the device tree structure, full pathes and
38 * property contents. The dt strings contain a separate block with just
39 * the strings for the property names, and is fully page aligned and
40 * self contained in a page, so that it can be kept around by the kernel,
41 * each property name appears only once in this page (cheap compression)
42 *
43 * the mem_rsvmap contains a map of reserved ranges of physical memory,
44 * passing it here instead of in the device-tree itself greatly simplifies
45 * the job of everybody. It's just a list of u64 pairs (base/size) that
46 * ends when size is 0
47 */
48struct boot_param_header
49{
50 u32 magic; /* magic word OF_DT_HEADER */
51 u32 totalsize; /* total size of DT block */
52 u32 off_dt_struct; /* offset to structure */
53 u32 off_dt_strings; /* offset to strings */
54 u32 off_mem_rsvmap; /* offset to memory reserve map */
55 u32 version; /* format version */
56 u32 last_comp_version; /* last compatible version */
57 /* version 2 fields below */
58 u32 boot_cpuid_phys; /* Physical CPU id we're booting on */
59 /* version 3 fields below */
60 u32 dt_strings_size; /* size of the DT strings block */
61};
62
63
64
65typedef u32 phandle;
66typedef u32 ihandle;
67
68struct address_range {
69 unsigned long space;
70 unsigned long address;
71 unsigned long size;
72};
73
74struct interrupt_info {
75 int line;
76 int sense; /* +ve/-ve logic, edge or level, etc. */
77};
78
79struct pci_address {
80 u32 a_hi;
81 u32 a_mid;
82 u32 a_lo;
83};
84
85struct isa_address {
86 u32 a_hi;
87 u32 a_lo;
88};
89
90struct isa_range {
91 struct isa_address isa_addr;
92 struct pci_address pci_addr;
93 unsigned int size;
94};
95
96struct reg_property {
97 unsigned long address;
98 unsigned long size;
99};
100
101struct reg_property32 {
102 unsigned int address;
103 unsigned int size;
104};
105
106struct reg_property64 {
107 u64 address;
108 u64 size;
109};
110
111struct property {
112 char *name;
113 int length;
114 unsigned char *value;
115 struct property *next;
116};
117
118struct device_node {
119 char *name;
120 char *type;
121 phandle node;
122 phandle linux_phandle;
123 int n_addrs;
124 struct address_range *addrs;
125 int n_intrs;
126 struct interrupt_info *intrs;
127 char *full_name;
128
129 struct property *properties;
130 struct device_node *parent;
131 struct device_node *child;
132 struct device_node *sibling;
133 struct device_node *next; /* next device of same type */
134 struct device_node *allnext; /* next in list of all nodes */
135 struct proc_dir_entry *pde; /* this node's proc directory */
136 struct kref kref;
137 unsigned long _flags;
138 void *data;
139};
140
141extern struct device_node *of_chosen;
142
143/* flag descriptions */
144#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
145
146#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
147#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
148
149#define HAVE_ARCH_DEVTREE_FIXUPS
150
151static inline void set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de)
152{
153 dn->pde = de;
154}
155
156
157/* OBSOLETE: Old style node lookup */
158extern struct device_node *find_devices(const char *name);
159extern struct device_node *find_type_devices(const char *type);
160extern struct device_node *find_path_device(const char *path);
161extern struct device_node *find_compatible_devices(const char *type,
162 const char *compat);
163extern struct device_node *find_all_nodes(void);
164
165/* New style node lookup */
166extern struct device_node *of_find_node_by_name(struct device_node *from,
167 const char *name);
168extern struct device_node *of_find_node_by_type(struct device_node *from,
169 const char *type);
170extern struct device_node *of_find_compatible_node(struct device_node *from,
171 const char *type, const char *compat);
172extern struct device_node *of_find_node_by_path(const char *path);
173extern struct device_node *of_find_node_by_phandle(phandle handle);
174extern struct device_node *of_find_all_nodes(struct device_node *prev);
175extern struct device_node *of_get_parent(const struct device_node *node);
176extern struct device_node *of_get_next_child(const struct device_node *node,
177 struct device_node *prev);
178extern struct device_node *of_node_get(struct device_node *node);
179extern void of_node_put(struct device_node *node);
180
181/* For updating the device tree at runtime */
182extern void of_attach_node(struct device_node *);
183extern void of_detach_node(const struct device_node *);
184
185/* Other Prototypes */
186extern void finish_device_tree(void);
187extern void unflatten_device_tree(void);
188extern void early_init_devtree(void *);
189extern int device_is_compatible(struct device_node *device, const char *);
190extern int machine_is_compatible(const char *compat);
191extern unsigned char *get_property(struct device_node *node, const char *name,
192 int *lenp);
193extern void print_properties(struct device_node *node);
194extern int prom_n_addr_cells(struct device_node* np);
195extern int prom_n_size_cells(struct device_node* np);
196extern int prom_n_intr_cells(struct device_node* np);
197extern void prom_get_irq_senses(unsigned char *senses, int off, int max);
198extern void prom_add_property(struct device_node* np, struct property* prop);
199
200#ifdef CONFIG_PPC32
201/*
202 * PCI <-> OF matching functions
203 * (XXX should these be here?)
204 */
205struct pci_bus;
206struct pci_dev;
207extern int pci_device_from_OF_node(struct device_node *node,
208 u8* bus, u8* devfn);
209extern struct device_node* pci_busdev_to_OF_node(struct pci_bus *, int);
210extern struct device_node* pci_device_to_OF_node(struct pci_dev *);
211extern void pci_create_OF_bus_map(void);
212#endif
213
214extern struct resource *request_OF_resource(struct device_node* node,
215 int index, const char* name_postfix);
216extern int release_OF_resource(struct device_node* node, int index);
217
218#endif /* __KERNEL__ */
219#endif /* _POWERPC_PROM_H */
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