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/* intelmetool
*
* Copyright (C) 2013-2015 Damien Zammit <damien@zamaudio.com>
*
* 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 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.
*/
#include "mmap.h"
#include <errno.h>
#include <string.h>
#ifndef __DARWIN__
int fd_mem;
void *map_physical_exact(off_t phys_addr, void *mapto, size_t len)
{
void *virt_addr;
int err;
virt_addr = mmap(mapto, len, PROT_WRITE | PROT_READ,
MAP_SHARED | MAP_FIXED, fd_mem, phys_addr);
if (virt_addr == MAP_FAILED) {
err = errno;
printf("Error mapping physical memory 0x%016jd [0x%zx] ERRNO=%d %s\n",
(intmax_t)phys_addr, len, err, strerror(err));
return NULL;
}
return virt_addr;
}
void *map_physical(off_t phys_addr, size_t len)
{
void *virt_addr;
int err;
virt_addr = mmap(NULL, len, PROT_WRITE | PROT_READ, MAP_SHARED, fd_mem, phys_addr);
if (virt_addr == MAP_FAILED) {
err = errno;
printf("Error mapping physical memory 0x%016jd [0x%zx] ERRNO=%d %s\n",
(intmax_t)phys_addr, len, err, strerror(err));
return NULL;
}
return virt_addr;
}
void unmap_physical(void *virt_addr, size_t len)
{
munmap(virt_addr, len);
}
#endif
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