1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2020 The FreeBSD Foundation
5 *
6 * This software was developed by Björn Zeeb under sponsorship from
7 * the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 #ifndef _LINUXKPI_LINUX_DEVCOREDUMP_H
32 #define _LINUXKPI_LINUX_DEVCOREDUMP_H
33
34 #include <linux/slab.h>
35 #include <linux/scatterlist.h>
36 #include <linux/device.h>
37
38 static inline void
_lkpi_dev_coredumpsg_free(struct scatterlist * table)39 _lkpi_dev_coredumpsg_free(struct scatterlist *table)
40 {
41 struct scatterlist *iter;
42 struct page *p;
43 int i;
44
45 iter = table;
46 for_each_sg(table, iter, sg_nents(table), i) {
47 p = sg_page(iter);
48 if (p)
49 __free_page(p);
50 }
51
52 /* XXX what about chained tables? */
53 kfree(table);
54 }
55
56 static inline void
dev_coredumpv(struct device * dev __unused,void * data,size_t datalen __unused,gfp_t gfp __unused)57 dev_coredumpv(struct device *dev __unused, void *data, size_t datalen __unused,
58 gfp_t gfp __unused)
59 {
60
61 /* UNIMPLEMENTED */
62 vfree(data);
63 }
64
65 static inline void
dev_coredumpsg(struct device * dev __unused,struct scatterlist * table,size_t datalen __unused,gfp_t gfp __unused)66 dev_coredumpsg(struct device *dev __unused, struct scatterlist *table,
67 size_t datalen __unused, gfp_t gfp __unused)
68 {
69
70 /* UNIMPLEMENTED */
71 _lkpi_dev_coredumpsg_free(table);
72 }
73
74 #endif /* _LINUXKPI_LINUX_DEVCOREDUMP_H */
75