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6bef038011
Introduce __rpmsg{16|32|64} types along with byte order conversion
functions based on an rpmsg_device operation as a foundation to
make RPMSG modular and transport agnostic.
Tested-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Suggested-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Link: https://lore.kernel.org/r/20201120214245.172963-2-mathieu.poirier@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Follows implementation found in linux/virtio_byteorder.h
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*/
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#ifndef _LINUX_RPMSG_BYTEORDER_H
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#define _LINUX_RPMSG_BYTEORDER_H
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#include <linux/types.h>
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#include <uapi/linux/rpmsg_types.h>
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static inline bool rpmsg_is_little_endian(void)
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{
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#ifdef __LITTLE_ENDIAN
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return true;
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#else
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return false;
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#endif
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}
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static inline u16 __rpmsg16_to_cpu(bool little_endian, __rpmsg16 val)
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{
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if (little_endian)
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return le16_to_cpu((__force __le16)val);
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else
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return be16_to_cpu((__force __be16)val);
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}
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static inline __rpmsg16 __cpu_to_rpmsg16(bool little_endian, u16 val)
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{
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if (little_endian)
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return (__force __rpmsg16)cpu_to_le16(val);
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else
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return (__force __rpmsg16)cpu_to_be16(val);
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}
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static inline u32 __rpmsg32_to_cpu(bool little_endian, __rpmsg32 val)
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{
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if (little_endian)
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return le32_to_cpu((__force __le32)val);
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else
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return be32_to_cpu((__force __be32)val);
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}
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static inline __rpmsg32 __cpu_to_rpmsg32(bool little_endian, u32 val)
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{
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if (little_endian)
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return (__force __rpmsg32)cpu_to_le32(val);
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else
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return (__force __rpmsg32)cpu_to_be32(val);
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}
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static inline u64 __rpmsg64_to_cpu(bool little_endian, __rpmsg64 val)
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{
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if (little_endian)
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return le64_to_cpu((__force __le64)val);
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else
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return be64_to_cpu((__force __be64)val);
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}
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static inline __rpmsg64 __cpu_to_rpmsg64(bool little_endian, u64 val)
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{
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if (little_endian)
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return (__force __rpmsg64)cpu_to_le64(val);
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else
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return (__force __rpmsg64)cpu_to_be64(val);
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}
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#endif /* _LINUX_RPMSG_BYTEORDER_H */
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