102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/*-
|
|
* 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);
|
|
}
|
|
|