1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_VIRTIO_BYTEORDER_H
3 #define _LINUX_VIRTIO_BYTEORDER_H
4 #include <linux/types.h>
5 #include <uapi/linux/virtio_types.h>
6
7 static inline bool virtio_legacy_is_little_endian(void)
8 {
9 #ifdef __LITTLE_ENDIAN
10 return true;
11 #else
12 return false;
13 #endif
14 }
15
16 static inline u16 __virtio16_to_cpu(bool little_endian, __virtio16 val)
17 {
18 if (little_endian)
19 return le16_to_cpu((__force __le16)val);
20 else
21 return be16_to_cpu((__force __be16)val);
22 }
23
24 static inline __virtio16 __cpu_to_virtio16(bool little_endian, u16 val)
25 {
26 if (little_endian)
27 return (__force __virtio16)cpu_to_le16(val);
28 else
29 return (__force __virtio16)cpu_to_be16(val);
30 }
31
32 static inline u32 __virtio32_to_cpu(bool little_endian, __virtio32 val)
33 {
34 if (little_endian)
35 return le32_to_cpu((__force __le32)val);
36 else
37 return be32_to_cpu((__force __be32)val);
38 }
39
40 static inline __virtio32 __cpu_to_virtio32(bool little_endian, u32 val)
41 {
42 if (little_endian)
43 return (__force __virtio32)cpu_to_le32(val);
44 else
45 return (__force __virtio32)cpu_to_be32(val);
46 }
47
48 static inline u64 __virtio64_to_cpu(bool little_endian, __virtio64 val)
49 {
50 if (little_endian)
51 return le64_to_cpu((__force __le64)val);
52 else
53 return be64_to_cpu((__force __be64)val);
54 }
55
56 static inline __virtio64 __cpu_to_virtio64(bool little_endian, u64 val)
57 {
58 if (little_endian)
59 return (__force __virtio64)cpu_to_le64(val);
60 else
61 return (__force __virtio64)cpu_to_be64(val);
62 }
63
64 #endif /* _LINUX_VIRTIO_BYTEORDER */
65
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