include/linux/virtio_byteorder.h

   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
   6 static 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
  15 static 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
  23 static 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
  31 static 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
  39 static 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
  47 static 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
  55 static 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 */