blob: e1a81c7d5eae739172542d85b6dbfa75798a0fd0 [file] [log] [blame]
/*
* Copyright (c) 2016, Freescale Semiconductor, Inc. All rights reserved.
* Copyright 2017,2018 NXP
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "gstimxcommon.h"
#include "gstimx.h"
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#ifdef USE_ION
#include <linux/ion.h>
#endif
const char *dev_ion = "/dev/ion";
unsigned long phy_addr_from_fd(int dmafd)
{
#ifdef USE_ION
int ret, fd;
if (dmafd < 0)
return NULL;
fd = open(dev_ion, O_RDWR);
if(fd < 0) {
return NULL;
}
struct ion_phys_dma_data data = {
.phys = 0,
.size = 0,
.dmafd = dmafd,
};
struct ion_custom_data custom = {
.cmd = ION_IOC_PHYS_DMA,
.arg = (unsigned long)&data,
};
ret = ioctl(fd, ION_IOC_CUSTOM, &custom);
close(fd);
if (ret < 0)
return NULL;
return data.phys;
#else
return NULL;
#endif
}
unsigned long phy_addr_from_vaddr(void *vaddr, int size)
{
#ifdef USE_ION
int ret, fd;
if (!vaddr)
return NULL;
fd = open(dev_ion, O_RDWR);
if(fd < 0) {
return NULL;
}
struct ion_phys_virt_data data = {
.virt = (unsigned long)vaddr,
.phys = 0,
.size = size,
};
struct ion_custom_data custom = {
.cmd = ION_IOC_PHYS_VIRT,
.arg = (unsigned long)&data,
};
ret = ioctl(fd, ION_IOC_CUSTOM, &custom);
close(fd);
if (ret < 0)
return NULL;
return data.phys;
#else
return NULL;
#endif
}