virtio_byteorder.h 1.5 KB

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  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. 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. static inline u16 __virtio16_to_cpu(bool little_endian, __virtio16 val)
  15. {
  16. if (little_endian)
  17. return le16_to_cpu((__force __le16)val);
  18. else
  19. return be16_to_cpu((__force __be16)val);
  20. }
  21. static inline __virtio16 __cpu_to_virtio16(bool little_endian, u16 val)
  22. {
  23. if (little_endian)
  24. return (__force __virtio16)cpu_to_le16(val);
  25. else
  26. return (__force __virtio16)cpu_to_be16(val);
  27. }
  28. static inline u32 __virtio32_to_cpu(bool little_endian, __virtio32 val)
  29. {
  30. if (little_endian)
  31. return le32_to_cpu((__force __le32)val);
  32. else
  33. return be32_to_cpu((__force __be32)val);
  34. }
  35. static inline __virtio32 __cpu_to_virtio32(bool little_endian, u32 val)
  36. {
  37. if (little_endian)
  38. return (__force __virtio32)cpu_to_le32(val);
  39. else
  40. return (__force __virtio32)cpu_to_be32(val);
  41. }
  42. static inline u64 __virtio64_to_cpu(bool little_endian, __virtio64 val)
  43. {
  44. if (little_endian)
  45. return le64_to_cpu((__force __le64)val);
  46. else
  47. return be64_to_cpu((__force __be64)val);
  48. }
  49. static inline __virtio64 __cpu_to_virtio64(bool little_endian, u64 val)
  50. {
  51. if (little_endian)
  52. return (__force __virtio64)cpu_to_le64(val);
  53. else
  54. return (__force __virtio64)cpu_to_be64(val);
  55. }
  56. #endif /* _LINUX_VIRTIO_BYTEORDER */