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1/*
2 * linux/fs/ufs/swab.h
3 *
4 * Copyright (C) 1997, 1998 Francois-Rene Rideau <fare@tunes.org>
5 * Copyright (C) 1998 Jakub Jelinek <jj@ultra.linux.cz>
6 * Copyright (C) 2001 Christoph Hellwig <hch@infradead.org>
7 */
8
9#ifndef _UFS_SWAB_H
10#define _UFS_SWAB_H
11
12/*
13 * Notes:
14 * HERE WE ASSUME EITHER BIG OR LITTLE ENDIAN UFSes
15 * in case there are ufs implementations that have strange bytesexes,
16 * you'll need to modify code here as well as in ufs_super.c and ufs_fs.h
17 * to support them.
18 */
19
20enum {
21 BYTESEX_LE,
22 BYTESEX_BE
23};
24
25static inline u64
26fs64_to_cpu(struct super_block *sbp, __fs64 n)
27{
28 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
29 return le64_to_cpu((__force __le64)n);
30 else
31 return be64_to_cpu((__force __be64)n);
32}
33
34static inline __fs64
35cpu_to_fs64(struct super_block *sbp, u64 n)
36{
37 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
38 return (__force __fs64)cpu_to_le64(n);
39 else
40 return (__force __fs64)cpu_to_be64(n);
41}
42
43static inline u32
44fs32_to_cpu(struct super_block *sbp, __fs32 n)
45{
46 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
47 return le32_to_cpu((__force __le32)n);
48 else
49 return be32_to_cpu((__force __be32)n);
50}
51
52static inline __fs32
53cpu_to_fs32(struct super_block *sbp, u32 n)
54{
55 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
56 return (__force __fs32)cpu_to_le32(n);
57 else
58 return (__force __fs32)cpu_to_be32(n);
59}
60
61static inline void
62fs32_add(struct super_block *sbp, __fs32 *n, int d)
63{
64 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
65 le32_add_cpu((__le32 *)n, d);
66 else
67 be32_add_cpu((__be32 *)n, d);
68}
69
70static inline void
71fs32_sub(struct super_block *sbp, __fs32 *n, int d)
72{
73 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
74 le32_add_cpu((__le32 *)n, -d);
75 else
76 be32_add_cpu((__be32 *)n, -d);
77}
78
79static inline u16
80fs16_to_cpu(struct super_block *sbp, __fs16 n)
81{
82 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
83 return le16_to_cpu((__force __le16)n);
84 else
85 return be16_to_cpu((__force __be16)n);
86}
87
88static inline __fs16
89cpu_to_fs16(struct super_block *sbp, u16 n)
90{
91 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
92 return (__force __fs16)cpu_to_le16(n);
93 else
94 return (__force __fs16)cpu_to_be16(n);
95}
96
97static inline void
98fs16_add(struct super_block *sbp, __fs16 *n, int d)
99{
100 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
101 le16_add_cpu((__le16 *)n, d);
102 else
103 be16_add_cpu((__be16 *)n, d);
104}
105
106static inline void
107fs16_sub(struct super_block *sbp, __fs16 *n, int d)
108{
109 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
110 le16_add_cpu((__le16 *)n, -d);
111 else
112 be16_add_cpu((__be16 *)n, -d);
113}
114
115#endif /* _UFS_SWAB_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * linux/fs/ufs/swab.h
4 *
5 * Copyright (C) 1997, 1998 Francois-Rene Rideau <fare@tunes.org>
6 * Copyright (C) 1998 Jakub Jelinek <jj@ultra.linux.cz>
7 * Copyright (C) 2001 Christoph Hellwig <hch@infradead.org>
8 */
9
10#ifndef _UFS_SWAB_H
11#define _UFS_SWAB_H
12
13/*
14 * Notes:
15 * HERE WE ASSUME EITHER BIG OR LITTLE ENDIAN UFSes
16 * in case there are ufs implementations that have strange bytesexes,
17 * you'll need to modify code here as well as in ufs_super.c and ufs_fs.h
18 * to support them.
19 */
20
21enum {
22 BYTESEX_LE,
23 BYTESEX_BE
24};
25
26static inline u64
27fs64_to_cpu(struct super_block *sbp, __fs64 n)
28{
29 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
30 return le64_to_cpu((__force __le64)n);
31 else
32 return be64_to_cpu((__force __be64)n);
33}
34
35static inline __fs64
36cpu_to_fs64(struct super_block *sbp, u64 n)
37{
38 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
39 return (__force __fs64)cpu_to_le64(n);
40 else
41 return (__force __fs64)cpu_to_be64(n);
42}
43
44static inline u32
45fs32_to_cpu(struct super_block *sbp, __fs32 n)
46{
47 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
48 return le32_to_cpu((__force __le32)n);
49 else
50 return be32_to_cpu((__force __be32)n);
51}
52
53static inline __fs32
54cpu_to_fs32(struct super_block *sbp, u32 n)
55{
56 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
57 return (__force __fs32)cpu_to_le32(n);
58 else
59 return (__force __fs32)cpu_to_be32(n);
60}
61
62static inline void
63fs32_add(struct super_block *sbp, __fs32 *n, int d)
64{
65 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
66 le32_add_cpu((__le32 *)n, d);
67 else
68 be32_add_cpu((__be32 *)n, d);
69}
70
71static inline void
72fs32_sub(struct super_block *sbp, __fs32 *n, int d)
73{
74 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
75 le32_add_cpu((__le32 *)n, -d);
76 else
77 be32_add_cpu((__be32 *)n, -d);
78}
79
80static inline u16
81fs16_to_cpu(struct super_block *sbp, __fs16 n)
82{
83 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
84 return le16_to_cpu((__force __le16)n);
85 else
86 return be16_to_cpu((__force __be16)n);
87}
88
89static inline __fs16
90cpu_to_fs16(struct super_block *sbp, u16 n)
91{
92 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
93 return (__force __fs16)cpu_to_le16(n);
94 else
95 return (__force __fs16)cpu_to_be16(n);
96}
97
98static inline void
99fs16_add(struct super_block *sbp, __fs16 *n, int d)
100{
101 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
102 le16_add_cpu((__le16 *)n, d);
103 else
104 be16_add_cpu((__be16 *)n, d);
105}
106
107static inline void
108fs16_sub(struct super_block *sbp, __fs16 *n, int d)
109{
110 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
111 le16_add_cpu((__le16 *)n, -d);
112 else
113 be16_add_cpu((__be16 *)n, -d);
114}
115
116#endif /* _UFS_SWAB_H */