/* 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