xref: /openbmc/linux/arch/sparc/include/asm/prom.h (revision 9ac8d3fb)
1 #ifndef _SPARC_PROM_H
2 #define _SPARC_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  * Updates for SPARC by David S. Miller
13  *
14  * This program is free software; you can redistribute it and/or
15  * modify it under the terms of the GNU General Public License
16  * as published by the Free Software Foundation; either version
17  * 2 of the License, or (at your option) any later version.
18  */
19 #include <linux/types.h>
20 #include <linux/proc_fs.h>
21 #include <linux/mutex.h>
22 #include <asm/atomic.h>
23 
24 #define OF_ROOT_NODE_ADDR_CELLS_DEFAULT	2
25 #define OF_ROOT_NODE_SIZE_CELLS_DEFAULT	1
26 
27 #define of_compat_cmp(s1, s2, l)	strncmp((s1), (s2), (l))
28 #define of_prop_cmp(s1, s2)		strcasecmp((s1), (s2))
29 #define of_node_cmp(s1, s2)		strcmp((s1), (s2))
30 
31 typedef u32 phandle;
32 typedef u32 ihandle;
33 
34 struct property {
35 	char	*name;
36 	int	length;
37 	void	*value;
38 	struct property *next;
39 	unsigned long _flags;
40 	unsigned int unique_id;
41 };
42 
43 struct of_irq_controller;
44 struct device_node {
45 	const char	*name;
46 	const char	*type;
47 	phandle	node;
48 	char	*path_component_name;
49 	char	*full_name;
50 
51 	struct	property *properties;
52 	struct  property *deadprops; /* removed 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 	struct  proc_dir_entry *pde;	/* this node's proc directory */
59 	struct  kref kref;
60 	unsigned long _flags;
61 	void	*data;
62 	unsigned int unique_id;
63 
64 	struct of_irq_controller *irq_trans;
65 };
66 
67 struct of_irq_controller {
68 	unsigned int	(*irq_build)(struct device_node *, unsigned int, void *);
69 	void		*data;
70 };
71 
72 #define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
73 #define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
74 
75 extern struct device_node *of_find_node_by_cpuid(int cpuid);
76 extern int of_set_property(struct device_node *node, const char *name, void *val, int len);
77 extern struct mutex of_set_property_mutex;
78 extern int of_getintprop_default(struct device_node *np,
79 				 const char *name,
80 				 int def);
81 extern int of_find_in_proplist(const char *list, const char *match, int len);
82 #ifdef CONFIG_NUMA
83 extern int of_node_to_nid(struct device_node *dp);
84 #else
85 #define of_node_to_nid(dp)	(-1)
86 #endif
87 
88 extern void prom_build_devicetree(void);
89 
90 /* Dummy ref counting routines - to be implemented later */
91 static inline struct device_node *of_node_get(struct device_node *node)
92 {
93 	return node;
94 }
95 static inline void of_node_put(struct device_node *node)
96 {
97 }
98 
99 /* These routines are here to provide compatibility with how powerpc
100  * handles IRQ mapping for OF device nodes.  We precompute and permanently
101  * register them in the of_device objects, whereas powerpc computes them
102  * on request.
103  */
104 extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
105 static inline void irq_dispose_mapping(unsigned int virq)
106 {
107 }
108 
109 /*
110  * NB:  This is here while we transition from using asm/prom.h
111  * to linux/of.h
112  */
113 #include <linux/of.h>
114 
115 extern struct device_node *of_console_device;
116 extern char *of_console_path;
117 extern char *of_console_options;
118 
119 #endif /* __KERNEL__ */
120 #endif /* _SPARC_PROM_H */
121