LXR linux/include/linux/virtio

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