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include/linux/virtio_byteorder.h 1.46 KB
d7d243b52   Eric Lee   SMARC-iMX8MQ Linu...
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  /* SPDX-License-Identifier: GPL-2.0 */
  #ifndef _LINUX_VIRTIO_BYTEORDER_H
  #define _LINUX_VIRTIO_BYTEORDER_H
  #include <linux/types.h>
  #include <uapi/linux/virtio_types.h>
  
  static inline bool virtio_legacy_is_little_endian(void)
  {
  #ifdef __LITTLE_ENDIAN
  	return true;
  #else
  	return false;
  #endif
  }
  
  static inline u16 __virtio16_to_cpu(bool little_endian, __virtio16 val)
  {
  	if (little_endian)
  		return le16_to_cpu((__force __le16)val);
  	else
  		return be16_to_cpu((__force __be16)val);
  }
  
  static inline __virtio16 __cpu_to_virtio16(bool little_endian, u16 val)
  {
  	if (little_endian)
  		return (__force __virtio16)cpu_to_le16(val);
  	else
  		return (__force __virtio16)cpu_to_be16(val);
  }
  
  static inline u32 __virtio32_to_cpu(bool little_endian, __virtio32 val)
  {
  	if (little_endian)
  		return le32_to_cpu((__force __le32)val);
  	else
  		return be32_to_cpu((__force __be32)val);
  }
  
  static inline __virtio32 __cpu_to_virtio32(bool little_endian, u32 val)
  {
  	if (little_endian)
  		return (__force __virtio32)cpu_to_le32(val);
  	else
  		return (__force __virtio32)cpu_to_be32(val);
  }
  
  static inline u64 __virtio64_to_cpu(bool little_endian, __virtio64 val)
  {
  	if (little_endian)
  		return le64_to_cpu((__force __le64)val);
  	else
  		return be64_to_cpu((__force __be64)val);
  }
  
  static inline __virtio64 __cpu_to_virtio64(bool little_endian, u64 val)
  {
  	if (little_endian)
  		return (__force __virtio64)cpu_to_le64(val);
  	else
  		return (__force __virtio64)cpu_to_be64(val);
  }
  
  #endif /* _LINUX_VIRTIO_BYTEORDER */