LookingGlass/common/include/common/ivshmem.h

48 lines
1.4 KiB
C

/**
* Looking Glass
* Copyright (C) 2017-2021 The Looking Glass Authors
* https://looking-glass.io
*
* 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.
*
* 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., 59
* Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _H_LG_COMMON_IVSHMEM_
#define _H_LG_COMMON_IVSHMEM_
#include <stdbool.h>
#include <stdint.h>
struct IVSHMEM
{
unsigned int size;
void * mem;
// internal use
void * opaque;
};
void ivshmemOptionsInit();
bool ivshmemInit(struct IVSHMEM * dev);
bool ivshmemOpen(struct IVSHMEM * dev);
bool ivshmemOpenDev(struct IVSHMEM * dev, const char * shmDev);
void ivshmemClose(struct IVSHMEM * dev);
void ivshmemFree(struct IVSHMEM * dev);
/* Linux KVMFR support only for now (VM->VM) */
bool ivshmemHasDMA (struct IVSHMEM * dev);
int ivshmemGetDMABuf(struct IVSHMEM * dev, uint64_t offset, uint64_t size);
#endif