FreeBSD/Linux Kernel Cross Reference
sys/dev/hid/hidraw.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2020 Vladimir Kondratyev <wulf@FreeBSD.org>
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    #ifndef _HID_HIDRAW_H
    #define _HID_HIDRAW_H
    
    #include <sys/ioccom.h>
    
    #define HIDRAW_BUFFER_SIZE      64      /* number of input reports buffered */
    #define HID_MAX_DESCRIPTOR_SIZE 4096    /* artificial limit taken from Linux */
    
    /*
     * Align IOCTL structures to hide differences when running 32-bit
     * programs under 64-bit kernels:
     */
    #ifdef COMPAT_32BIT
    #define HIDRAW_IOCTL_STRUCT_ALIGN(n) __aligned(n)
    #else
    #define HIDRAW_IOCTL_STRUCT_ALIGN(n)
    #endif
    
    /* Compatible with usb_gen_descriptor structure */
    struct hidraw_gen_descriptor {
    #ifdef COMPAT_32BIT
            uint64_t hgd_data;
    #else
            void   *hgd_data;
    #endif
            uint16_t hgd_lang_id;
            uint16_t hgd_maxlen;
            uint16_t hgd_actlen;
            uint16_t hgd_offset;
            uint8_t hgd_config_index;
            uint8_t hgd_string_index;
            uint8_t hgd_iface_index;
            uint8_t hgd_altif_index;
            uint8_t hgd_endpt_index;
            uint8_t hgd_report_type;
            uint8_t reserved[8];
    } HIDRAW_IOCTL_STRUCT_ALIGN(8);
    
    struct hidraw_report_descriptor {
            uint32_t        size;
            uint8_t         value[HID_MAX_DESCRIPTOR_SIZE];
    } HIDRAW_IOCTL_STRUCT_ALIGN(4);
    
    struct hidraw_devinfo {
            uint32_t        bustype;
            int16_t         vendor;
            int16_t         product;
    } HIDRAW_IOCTL_STRUCT_ALIGN(4);
    
    /* FreeBSD uhid(4)-compatible ioctl interface */
    #define HIDRAW_GET_REPORT_DESC  _IOWR('U', 21, struct hidraw_gen_descriptor)
    #define HIDRAW_SET_IMMED        _IOW ('U', 22, int)
    #define HIDRAW_GET_REPORT       _IOWR('U', 23, struct hidraw_gen_descriptor)
    #define HIDRAW_SET_REPORT       _IOW ('U', 24, struct hidraw_gen_descriptor)
    #define HIDRAW_GET_REPORT_ID    _IOR ('U', 25, int)
    #define HIDRAW_SET_REPORT_DESC  _IOW ('U', 26, struct hidraw_gen_descriptor)
    
    /* Linux hidraw-compatible ioctl interface */
    #define HIDIOCGRDESCSIZE        _IOR('U', 30, int)
    #define HIDIOCGRDESC            _IO ('U', 31)
    #define HIDIOCGRAWINFO          _IOR('U', 32, struct hidraw_devinfo)
    #define HIDIOCGRAWNAME(len)     _IOC(IOC_OUT,   'U', 33, len)
    #define HIDIOCGRAWPHYS(len)     _IOC(IOC_OUT,   'U', 34, len)
    #define HIDIOCSFEATURE(len)     _IOC(IOC_IN,    'U', 35, len)
    #define HIDIOCGFEATURE(len)     _IOC(IOC_INOUT, 'U', 36, len)
    #define HIDIOCGRAWUNIQ(len)     _IOC(IOC_OUT,   'U', 37, len)
    
    #endif  /* _HID_HIDRAW_H */

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