include/linux/virtio_byteorder.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef _LINUX_VIRTIO_BYTEORDER_H
0003 #define _LINUX_VIRTIO_BYTEORDER_H
0004 #include <linux/types.h>
0005 #include <uapi/linux/virtio_types.h>
0006
0007 static inline bool virtio_legacy_is_little_endian(void)
0008 {
0009 #ifdef __LITTLE_ENDIAN
0010     return true;
0011 #else
0012     return false;
0013 #endif
0014 }
0015
0016 static inline u16 __virtio16_to_cpu(bool little_endian, __virtio16 val)
0017 {
0018     if (little_endian)
0019         return le16_to_cpu((__force __le16)val);
0020     else
0021         return be16_to_cpu((__force __be16)val);
0022 }
0023
0024 static inline __virtio16 __cpu_to_virtio16(bool little_endian, u16 val)
0025 {
0026     if (little_endian)
0027         return (__force __virtio16)cpu_to_le16(val);
0028     else
0029         return (__force __virtio16)cpu_to_be16(val);
0030 }
0031
0032 static inline u32 __virtio32_to_cpu(bool little_endian, __virtio32 val)
0033 {
0034     if (little_endian)
0035         return le32_to_cpu((__force __le32)val);
0036     else
0037         return be32_to_cpu((__force __be32)val);
0038 }
0039
0040 static inline __virtio32 __cpu_to_virtio32(bool little_endian, u32 val)
0041 {
0042     if (little_endian)
0043         return (__force __virtio32)cpu_to_le32(val);
0044     else
0045         return (__force __virtio32)cpu_to_be32(val);
0046 }
0047
0048 static inline u64 __virtio64_to_cpu(bool little_endian, __virtio64 val)
0049 {
0050     if (little_endian)
0051         return le64_to_cpu((__force __le64)val);
0052     else
0053         return be64_to_cpu((__force __be64)val);
0054 }
0055
0056 static inline __virtio64 __cpu_to_virtio64(bool little_endian, u64 val)
0057 {
0058     if (little_endian)
0059         return (__force __virtio64)cpu_to_le64(val);
0060     else
0061         return (__force __virtio64)cpu_to_be64(val);
0062 }
0063
0064 #endif /* _LINUX_VIRTIO_BYTEORDER */