include/linux/virtio_byteorder.h

   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 */