include/uapi/sound/sof/abi.h

   1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
   2 /*
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * Copyright(c) 2018 Intel Corporation. All rights reserved.
   7  */
   8
   9 /**
  10  * SOF ABI versioning is based on Semantic Versioning where we have a given
  11  * MAJOR.MINOR.PATCH version number. See https://semver.org/
  12  *
  13  * Rules for incrementing or changing version :-
  14  *
  15  * 1) Increment MAJOR version if you make incompatible API changes. MINOR and
  16  *    PATCH should be reset to 0.
  17  *
  18  * 2) Increment MINOR version if you add backwards compatible features or
  19  *    changes. PATCH should be reset to 0.
  20  *
  21  * 3) Increment PATCH version if you add backwards compatible bug fixes.
  22  */
  23
  24 #ifndef __INCLUDE_UAPI_SOUND_SOF_ABI_H__
  25 #define __INCLUDE_UAPI_SOUND_SOF_ABI_H__
  26
  27 /* SOF ABI version major, minor and patch numbers */
  28 #define SOF_ABI_MAJOR 3
  29 #define SOF_ABI_MINOR 4
  30 #define SOF_ABI_PATCH 0
  31
  32 /* SOF ABI version number. Format within 32bit word is MMmmmppp */
  33 #define SOF_ABI_MAJOR_SHIFT     24
  34 #define SOF_ABI_MAJOR_MASK      0xff
  35 #define SOF_ABI_MINOR_SHIFT     12
  36 #define SOF_ABI_MINOR_MASK      0xfff
  37 #define SOF_ABI_PATCH_SHIFT     0
  38 #define SOF_ABI_PATCH_MASK      0xfff
  39
  40 #define SOF_ABI_VER(major, minor, patch) \
  41         (((major) << SOF_ABI_MAJOR_SHIFT) | \
  42         ((minor) << SOF_ABI_MINOR_SHIFT) | \
  43         ((patch) << SOF_ABI_PATCH_SHIFT))
  44
  45 #define SOF_ABI_VERSION_MAJOR(version) \
  46         (((version) >> SOF_ABI_MAJOR_SHIFT) & SOF_ABI_MAJOR_MASK)
  47 #define SOF_ABI_VERSION_MINOR(version)  \
  48         (((version) >> SOF_ABI_MINOR_SHIFT) & SOF_ABI_MINOR_MASK)
  49 #define SOF_ABI_VERSION_PATCH(version)  \
  50         (((version) >> SOF_ABI_PATCH_SHIFT) & SOF_ABI_PATCH_MASK)
  51
  52 #define SOF_ABI_VERSION_INCOMPATIBLE(sof_ver, client_ver)               \
  53         (SOF_ABI_VERSION_MAJOR((sof_ver)) !=                            \
  54                 SOF_ABI_VERSION_MAJOR((client_ver))                     \
  55         )
  56
  57 #define SOF_ABI_VERSION SOF_ABI_VER(SOF_ABI_MAJOR, SOF_ABI_MINOR, SOF_ABI_PATCH)
  58
  59 /* SOF ABI magic number "SOF\0". */
  60 #define SOF_ABI_MAGIC           0x00464F53
  61
  62 #endif