| 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 |