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
|
/*-
* Copyright (c) 2006 Kip Macy
* 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.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/endian.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/socket.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/taskqueue.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/types.h>
#include <sys/param.h>
#include <machine/mdesc_bus.h>
#include <machine/cddl/mdesc.h>
int
md_vdev_find_node(device_t dev, mde_cookie_t *valp)
{
uint64_t cfg_handle;
mde_cookie_t rootnode, node, *listp = NULL;
int i, listsz, num_nodes, num_devices, error;
md_t *mdp;
cfg_handle = mdesc_bus_get_handle(dev);
error = EINVAL;
if ((mdp = md_get()) == NULL)
return (ENXIO);
num_nodes = md_node_count(mdp);
listsz = num_nodes * sizeof(mde_cookie_t);
listp = (mde_cookie_t *)malloc(listsz, M_DEVBUF, M_WAITOK);
rootnode = md_root_node(mdp);
node = error = 0;
num_devices = md_scan_dag(mdp, rootnode,
md_find_name(mdp, "virtual-device"),
md_find_name(mdp, "fwd"), listp);
if (num_devices == 0) {
error = ENOENT;
goto done;
}
for (i = 0; i < num_devices; i++) {
uint64_t thandle;
node = listp[i];
md_get_prop_val(mdp, node, "cfg-handle", &thandle);
if (thandle == cfg_handle) {
*valp = node;
break;
}
}
done:
md_put(mdp);
return (error);
}
|
