drivers/media_modules/frame_sink/encoder/memalloc/memalloc.h

/* SPDX-License-Identifier: GPL-2.0
 ****************************************************************************
 *
 *    The MIT License (MIT)
 *
 *    COPYRIGHT (C) 2014 VERISILICON ALL RIGHTS RESERVED
 *
 *    Permission is hereby granted, free of charge, to any person obtaining a
 *    copy of this software and associated documentation files (the "Software"),
 *    to deal in the Software without restriction, including without limitation
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 *    and/or sell copies of the Software, and to permit persons to whom the
 *    Software is furnished to do so, subject to the following conditions:
 *
 *    The above copyright notice and this permission notice shall be included in
 *    all copies or substantial portions of the Software.
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 *    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 *    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 *    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 *    DEALINGS IN THE SOFTWARE.
 *
 *****************************************************************************
 *
 *    The GPL License (GPL)
 *
 *    COPYRIGHT (C) 2014 VERISILICON ALL RIGHTS RESERVED
 *
 *    This program is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU General Public License
 *    as published by the Free Software Foundation; either version 2
 *    of the License, or (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
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 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software Foundation,
 *    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 *****************************************************************************
 *
 *    Note: This software is released under dual MIT and GPL licenses. A
 *    recipient may use this file under the terms of either the MIT license or
 *    GPL License. If you wish to use only one license not the other, you can
 *    indicate your decision by deleting one of the above license notices in your
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 *
 *****************************************************************************
 */

#ifndef MEMALLOC_H
#define MEMALLOC_H

#include <linux/ioctl.h>

#undef PDEBUG /* undef it, just in case */
#ifdef MEMALLOC_DEBUG
#ifdef __KERNEL__
/* This one if debugging is on, and kernel space */
#define PDEBUG(fmt, args...) pr_info("memalloc: " fmt, ##args)
#else
/* This one for user space */
#define PDEBUG(fmt, args...) fprintf(stderr, fmt, ##args)
#endif
#else
#define PDEBUG(fmt, args...) /* not debugging: nothing */
#endif
/*
 * Ioctl definitions
 */
/* Use 'k' as magic number */
#define MEMALLOC_IOC_MAGIC 'k'
/*
 * S means "Set" through a ptr,
 * T means "Tell" directly with the argument value
 * G means "Get": reply by setting through a pointer
 * Q means "Query": response is on the return value
 * X means "eXchange": G and S atomically
 * H means "sHift": T and Q atomically
 */
typedef struct MemallocParams_t{
    unsigned int bus_address;
    unsigned int size;
    unsigned int translation_offset;
    unsigned int mem_type;
} MemallocParams;

#define MEMALLOC_IOCXGETBUFFER _IOWR(MEMALLOC_IOC_MAGIC, 1, struct MemallocParams_t)
#define MEMALLOC_IOCSFREEBUFFER _IOW(MEMALLOC_IOC_MAGIC, 2, u32)
#define MEMALLOC_IOCGMEMBASE _IOR(MEMALLOC_IOC_MAGIC, 3, u32)

/* ... more to come */
#define MEMALLOC_IOCHARDRESET _IO(MEMALLOC_IOC_MAGIC, 15) /* debugging tool */

#define MEMALLOC_IOC_MAXNR 15

#endif /* MEMALLOC_H */