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  * $FreeBSD$
31  */
32 
33 #ifndef	_LINUXKPI_LINUX_DEVCOREDUMP_H
34 #define	_LINUXKPI_LINUX_DEVCOREDUMP_H
35 
36 #include <linux/slab.h>
37 #include <linux/scatterlist.h>
38 #include <linux/device.h>
39 
40 static inline void
41 _lkpi_dev_coredumpsg_free(struct scatterlist *table)
42 {
43 	struct scatterlist *iter;
44 	struct page *p;
45 	int i;
46 
47 	iter = table;
48 	for_each_sg(table, iter, sg_nents(table), i) {
49 		p = sg_page(iter);
50 		if (p)
51 			__free_page(p);
52 	}
53 
54 	/* XXX what about chained tables? */
55 	kfree(table);
56 }
57 
58 static inline void
59 dev_coredumpv(struct device *dev __unused, void *data, size_t datalen __unused,
60     gfp_t gfp __unused)
61 {
62 
63 	/* UNIMPLEMENTED */
64 	vfree(data);
65 }
66 
67 static inline void
68 dev_coredumpsg(struct device *dev __unused, struct scatterlist *table,
69     size_t datalen __unused, gfp_t gfp __unused)
70 {
71 
72 	/* UNIMPLEMENTED */
73 	_lkpi_dev_coredumpsg_free(table);
74 }
75 
76 #endif	/* _LINUXKPI_LINUX_DEVCOREDUMP_H */
77