LXR linux/include/linux/virtio

   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
   7static 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
  16static 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
  24static 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
  32static 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
  40static 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
  48static 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
  56static 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