59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* intelmetool
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*
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* Copyright (C) 2013-2015 Damien Zammit <damien@zamaudio.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "mmap.h"
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#include <errno.h>
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#ifndef __DARWIN__
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int fd_mem;
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void *map_physical_exact(uint64_t phys_addr, uint64_t mapto, size_t len) {
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void *virt_addr;
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int err;
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virt_addr = mmap((void*)mapto, len, PROT_WRITE | PROT_READ,
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MAP_SHARED | MAP_FIXED, fd_mem, (off_t) phys_addr);
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if (virt_addr == MAP_FAILED) {
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err = errno;
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printf("Error mapping physical memory 0x%016" PRIx64 "[0x%zx] ERRNO=%d\n",
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phys_addr, len, err);
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return NULL;
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}
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return virt_addr;
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}
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void *map_physical(uint64_t phys_addr, size_t len) {
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void *virt_addr;
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int err;
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virt_addr = mmap(NULL, len, PROT_WRITE | PROT_READ, MAP_SHARED, fd_mem, (off_t) phys_addr);
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if (virt_addr == MAP_FAILED) {
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err = errno;
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printf("Error mapping physical memory 0x%016" PRIx64 "[0x%zx] ERRNO=%d\n",
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phys_addr, len, err);
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return NULL;
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}
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return virt_addr;
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}
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void unmap_physical(void *virt_addr, size_t len) {
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munmap(virt_addr, len);
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}
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#endif
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