2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2004 Mark R V Murray
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer
12 * in this position and unchanged.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/kernel.h>
35 #include <sys/malloc.h>
36 #include <sys/memrange.h>
37 #include <sys/rwlock.h>
38 #include <sys/systm.h>
40 static struct rwlock mr_lock;
43 * Implementation-neutral, kernel-callable functions for manipulating
44 * memory range attributes.
50 if (mem_range_softc.mr_op == NULL)
52 rw_init(&mr_lock, "memrange");
53 mem_range_softc.mr_op->init(&mem_range_softc);
57 mem_range_destroy(void)
60 if (mem_range_softc.mr_op == NULL)
66 mem_range_attr_get(struct mem_range_desc *mrd, int *arg)
70 if (mem_range_softc.mr_op == NULL)
75 *arg = mem_range_softc.mr_ndesc;
77 bcopy(mem_range_softc.mr_desc, mrd, nd * sizeof(*mrd));
83 mem_range_attr_set(struct mem_range_desc *mrd, int *arg)
87 if (mem_range_softc.mr_op == NULL)
90 ret = mem_range_softc.mr_op->set(&mem_range_softc, mrd, arg);