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gerrit-public.fairphone.software / kernel / msm-4.9 / 40ef8cbc6d360e564573eb19582249c35d8ba330 / . / include / asm-powerpc / prom.h
blob: efc40980cb4857076c4437b0cbbcc144aa829f86 [file] [log] [blame]
Paul Mackerras9b6b5632005-10-06 12:06:20 +1000[diff] [blame]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/types.h>
19#include <linux/proc_fs.h>
20#include <asm/atomic.h>
21
22/* Definitions used by the flattened device tree */
23#define OF_DT_HEADER 0xd00dfeed /* marker */
24#define OF_DT_BEGIN_NODE 0x1 /* Start of node, full name */
25#define OF_DT_END_NODE 0x2 /* End node */
26#define OF_DT_PROP 0x3 /* Property: name off, size,
27 * content */
28#define OF_DT_NOP 0x4 /* nop */
29#define OF_DT_END 0x9
30
31#define OF_DT_VERSION 0x10
32
33/*
34 * This is what gets passed to the kernel by prom_init or kexec
35 *
36 * The dt struct contains the device tree structure, full pathes and
37 * property contents. The dt strings contain a separate block with just
38 * the strings for the property names, and is fully page aligned and
39 * self contained in a page, so that it can be kept around by the kernel,
40 * each property name appears only once in this page (cheap compression)
41 *
42 * the mem_rsvmap contains a map of reserved ranges of physical memory,
43 * passing it here instead of in the device-tree itself greatly simplifies
44 * the job of everybody. It's just a list of u64 pairs (base/size) that
45 * ends when size is 0
46 */
47struct boot_param_header
48{
49 u32 magic; /* magic word OF_DT_HEADER */
50 u32 totalsize; /* total size of DT block */
51 u32 off_dt_struct; /* offset to structure */
52 u32 off_dt_strings; /* offset to strings */
53 u32 off_mem_rsvmap; /* offset to memory reserve map */
54 u32 version; /* format version */
55 u32 last_comp_version; /* last compatible version */
56 /* version 2 fields below */
57 u32 boot_cpuid_phys; /* Physical CPU id we're booting on */
58 /* version 3 fields below */
59 u32 dt_strings_size; /* size of the DT strings block */
60};
61
62
63
64typedef u32 phandle;
65typedef u32 ihandle;
66
67struct address_range {
68 unsigned long space;
69 unsigned long address;
70 unsigned long size;
71};
72
73struct interrupt_info {
74 int line;
75 int sense; /* +ve/-ve logic, edge or level, etc. */
76};
77
78struct pci_address {
79 u32 a_hi;
80 u32 a_mid;
81 u32 a_lo;
82};
83
84struct isa_address {
85 u32 a_hi;
86 u32 a_lo;
87};
88
89struct isa_range {
90 struct isa_address isa_addr;
91 struct pci_address pci_addr;
92 unsigned int size;
93};
94
95struct reg_property {
96 unsigned long address;
97 unsigned long size;
98};
99
100struct reg_property32 {
101 unsigned int address;
102 unsigned int size;
103};
104
105struct reg_property64 {
106 unsigned long address;
107 unsigned long size;
108};
109
110struct property {
111 char *name;
112 int length;
113 unsigned char *value;
114 struct property *next;
115};
116
117struct device_node {
118 char *name;
119 char *type;
120 phandle node;
121 phandle linux_phandle;
122 int n_addrs;
123 struct address_range *addrs;
124 int n_intrs;
125 struct interrupt_info *intrs;
126 char *full_name;
127
128 struct property *properties;
129 struct device_node *parent;
130 struct device_node *child;
131 struct device_node *sibling;
132 struct device_node *next; /* next device of same type */
133 struct device_node *allnext; /* next in list of all nodes */
134 struct proc_dir_entry *pde; /* this node's proc directory */
135 struct kref kref;
136 unsigned long _flags;
137 void *data;
138};
139
140extern struct device_node *of_chosen;
141
142/* flag descriptions */
143#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
144
145#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
146#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
147
148#define HAVE_ARCH_DEVTREE_FIXUPS
149
150static inline void set_node_proc_entry(struct device_node *dn, struct proc_dir_entry *de)
151{
152 dn->pde = de;
153}
154
155
156/* OBSOLETE: Old style node lookup */
157extern struct device_node *find_devices(const char *name);
158extern struct device_node *find_type_devices(const char *type);
159extern struct device_node *find_path_device(const char *path);
160extern struct device_node *find_compatible_devices(const char *type,
161 const char *compat);
162extern struct device_node *find_all_nodes(void);
163
164/* New style node lookup */
165extern struct device_node *of_find_node_by_name(struct device_node *from,
166 const char *name);
167extern struct device_node *of_find_node_by_type(struct device_node *from,
168 const char *type);
169extern struct device_node *of_find_compatible_node(struct device_node *from,
170 const char *type, const char *compat);
171extern struct device_node *of_find_node_by_path(const char *path);
172extern struct device_node *of_find_node_by_phandle(phandle handle);
173extern struct device_node *of_find_all_nodes(struct device_node *prev);
174extern struct device_node *of_get_parent(const struct device_node *node);
175extern struct device_node *of_get_next_child(const struct device_node *node,
176 struct device_node *prev);
177extern struct device_node *of_node_get(struct device_node *node);
178extern void of_node_put(struct device_node *node);
179
180/* For updating the device tree at runtime */
181extern void of_attach_node(struct device_node *);
182extern void of_detach_node(const struct device_node *);
183
184/* Other Prototypes */
185extern void finish_device_tree(void);
186extern void unflatten_device_tree(void);
187extern void early_init_devtree(void *);
188extern int device_is_compatible(struct device_node *device, const char *);
189extern int machine_is_compatible(const char *compat);
190extern unsigned char *get_property(struct device_node *node, const char *name,
191 int *lenp);
192extern void print_properties(struct device_node *node);
193extern int prom_n_addr_cells(struct device_node* np);
194extern int prom_n_size_cells(struct device_node* np);
195extern int prom_n_intr_cells(struct device_node* np);
196extern void prom_get_irq_senses(unsigned char *senses, int off, int max);
197extern void prom_add_property(struct device_node* np, struct property* prop);
198
Paul Mackerras40ef8cb2005-10-10 22:50:37 +1000[diff] [blame^]199#ifdef CONFIG_PPC32
Paul Mackerras9b6b5632005-10-06 12:06:20 +1000[diff] [blame]200/*
201 * PCI <-> OF matching functions
202 * (XXX should these be here?)
203 */
204struct pci_bus;
205struct pci_dev;
206extern int pci_device_from_OF_node(struct device_node *node,
207 u8* bus, u8* devfn);
208extern struct device_node* pci_busdev_to_OF_node(struct pci_bus *, int);
209extern struct device_node* pci_device_to_OF_node(struct pci_dev *);
210extern void pci_create_OF_bus_map(void);
Paul Mackerras40ef8cb2005-10-10 22:50:37 +1000[diff] [blame^]211#endif
212
Paul Mackerras9b6b5632005-10-06 12:06:20 +1000[diff] [blame]213extern struct resource *request_OF_resource(struct device_node* node,
214 int index, const char* name_postfix);
215extern int release_OF_resource(struct device_node* node, int index);
216
217#endif /* __KERNEL__ */
218#endif /* _POWERPC_PROM_H */