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The C and C++ Include Header Files

cat -n /usr/include/sound/sof/fw.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
     7	 */
     8	
     9	/*
    10	 * Firmware file format .
    11	 */
    12	
    13	#ifndef __INCLUDE_UAPI_SOF_FW_H__
    14	#define __INCLUDE_UAPI_SOF_FW_H__
    15	
    16	#include <linux/types.h>
    17	
    18	#define SND_SOF_FW_SIG_SIZE	4
    19	#define SND_SOF_FW_ABI		1
    20	#define SND_SOF_FW_SIG		"Reef"
    21	
    22	/*
    23	 * Firmware module is made up of 1 . N blocks of different types. The
    24	 * Block header is used to determine where and how block is to be copied in the
    25	 * DSP/host memory space.
    26	 */
    27	enum snd_sof_fw_blk_type {
    28		SOF_FW_BLK_TYPE_INVALID	= -1,
    29		SOF_FW_BLK_TYPE_START	= 0,
    30		SOF_FW_BLK_TYPE_RSRVD0	= SOF_FW_BLK_TYPE_START,
    31		SOF_FW_BLK_TYPE_IRAM	= 1,	/* local instruction RAM */
    32		SOF_FW_BLK_TYPE_DRAM	= 2,	/* local data RAM */
    33		SOF_FW_BLK_TYPE_SRAM	= 3,	/* system RAM */
    34		SOF_FW_BLK_TYPE_ROM	= 4,
    35		SOF_FW_BLK_TYPE_IMR	= 5,
    36		SOF_FW_BLK_TYPE_RSRVD6	= 6,
    37		SOF_FW_BLK_TYPE_RSRVD7	= 7,
    38		SOF_FW_BLK_TYPE_RSRVD8	= 8,
    39		SOF_FW_BLK_TYPE_RSRVD9	= 9,
    40		SOF_FW_BLK_TYPE_RSRVD10	= 10,
    41		SOF_FW_BLK_TYPE_RSRVD11	= 11,
    42		SOF_FW_BLK_TYPE_RSRVD12	= 12,
    43		SOF_FW_BLK_TYPE_RSRVD13	= 13,
    44		SOF_FW_BLK_TYPE_RSRVD14	= 14,
    45		/* use SOF_FW_BLK_TYPE_RSVRDX for new block types */
    46		SOF_FW_BLK_TYPE_NUM
    47	};
    48	
    49	struct snd_sof_blk_hdr {
    50		enum snd_sof_fw_blk_type type;
    51		__u32 size;		/* bytes minus this header */
    52		__u32 offset;		/* offset from base */
    53	} __attribute__((packed));
    54	
    55	/*
    56	 * Firmware file is made up of 1 .. N different modules types. The module
    57	 * type is used to determine how to load and parse the module.
    58	 */
    59	enum snd_sof_fw_mod_type {
    60		SOF_FW_BASE	= 0,	/* base firmware image */
    61		SOF_FW_MODULE	= 1,	/* firmware module */
    62	};
    63	
    64	struct snd_sof_mod_hdr {
    65		enum snd_sof_fw_mod_type type;
    66		__u32 size;		/* bytes minus this header */
    67		__u32 num_blocks;	/* number of blocks */
    68	} __attribute__((packed));
    69	
    70	/*
    71	 * Firmware file header.
    72	 */
    73	struct snd_sof_fw_header {
    74		unsigned char sig[SND_SOF_FW_SIG_SIZE]; /* "Reef" */
    75		__u32 file_size;	/* size of file minus this header */
    76		__u32 num_modules;	/* number of modules */
    77		__u32 abi;		/* version of header format */
    78	} __attribute__((packed));
    79	
    80	#endif