summaryrefslogtreecommitdiffstats
path: root/lib/libdevinfo/devinfo.h
blob: f31058a2353b2a69a92d0bff87f84ef6fa426141 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
/*-
 * Copyright (c) 2000 Michael Smith
 * Copyright (c) 2000 BSDi
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	$FreeBSD$
 */

#include <sys/cdefs.h>
#include <sys/_types.h>

typedef __uintptr_t	devinfo_handle_t;
#define DEVINFO_ROOT_DEVICE	((devinfo_handle_t)0)

/*
 * State of the device.
 */
/* XXX not sure if I want a copy here, or expose sys/bus.h */
typedef enum devinfo_state {
	DIS_NOTPRESENT,			/* not probed or probe failed */
	DIS_ALIVE,			/* probe succeeded */
	DIS_ATTACHED,			/* attach method called */
	DIS_BUSY			/* device is open */
} devinfo_state_t;

struct devinfo_dev {
	devinfo_handle_t	dd_handle;	/* device handle */
	devinfo_handle_t	dd_parent;	/* parent handle */

	char			*dd_name;	/* name of device */
	char			*dd_desc;	/* device description */
	char			*dd_drivername;	/* name of attached driver*/
	char			*dd_pnpinfo;	/* pnp info from parent bus */
	char			*dd_location;	/* Where bus thinks dev at */
	uint32_t		dd_devflags;	/* API flags */
	uint16_t		dd_flags;	/* internal dev flags */
	devinfo_state_t		dd_state;	/* attacement state of dev */
};

struct devinfo_rman {
	devinfo_handle_t	dm_handle;	/* resource manager handle */

	unsigned long		dm_start;	/* resource start */
	unsigned long		dm_size;	/* resource size */
    
	char			*dm_desc;	/* resource description */
};

struct devinfo_res {
	devinfo_handle_t	dr_handle;	/* resource handle */
	devinfo_handle_t	dr_rman;	/* resource manager handle */
	devinfo_handle_t	dr_device;	/* owning device */

	unsigned long		dr_start;	/* region start */
	unsigned long		dr_size;	/* region size */
	/* XXX add flags */
};

/*
 * Acquire a coherent copy of the kernel's device and resource tables.
 * This must return success (zero) before any other interfaces will
 * function.  Sets errno on failure.
 */
extern int	devinfo_init(void);

/*
 * Release the storage associated with the internal copy of the device
 * and resource tables. devinfo_init must be called before any attempt
 * is made to use any other interfaces.
 */
extern void	devinfo_free(void);

/*
 * Find a device/resource/resource manager by its handle.
 */
extern struct devinfo_dev
	*devinfo_handle_to_device(devinfo_handle_t handle);
extern struct devinfo_res
	*devinfo_handle_to_resource(devinfo_handle_t handle);
extern struct devinfo_rman
	*devinfo_handle_to_rman(devinfo_handle_t handle);

/*
 * Iterate over the children of a device, calling (fn) on each.  If
 * (fn) returns nonzero, abort the scan and return.
 */
extern int
	devinfo_foreach_device_child(struct devinfo_dev *parent, 
	    int (* fn)(struct devinfo_dev *child, void *arg), 
	    void *arg);

/*
 * Iterate over all the resources owned by a device, calling (fn) on each.
 * If (fn) returns nonzero, abort the scan and return.
 */
extern int
	devinfo_foreach_device_resource(struct devinfo_dev *dev,
	    int (* fn)(struct devinfo_dev *dev, 
	    struct devinfo_res *res, void *arg),
	    void *arg);

/*
 * Iterate over all the resources owned by a resource manager, calling (fn)
 * on each.  If (fn) returns nonzero, abort the scan and return.
 */
extern int
	devinfo_foreach_rman_resource(struct devinfo_rman *rman,
	    int (* fn)(struct devinfo_res *res, void *arg),
	    void *arg);

/*
 * Iterate over all the resource managers, calling (fn) on each.  If (fn)
 * returns nonzero, abort the scan and return.
 */
extern int
	devinfo_foreach_rman(int (* fn)(struct devinfo_rman *rman, void *arg),
	    void *arg);
OpenPOWER on IntegriCloud