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