| 27 | } |
| 28 | |
| 29 | void *map_physical(off_t phys_addr, size_t len) |
| 30 | { |
| 31 | void *virt_addr; |
| 32 | int err; |
| 33 | |
| 34 | virt_addr = mmap(NULL, len, PROT_WRITE | PROT_READ, MAP_SHARED, fd_mem, phys_addr); |
| 35 | |
| 36 | if (virt_addr == MAP_FAILED) { |
| 37 | err = errno; |
| 38 | printf("Error mapping physical memory 0x%016jx [0x%zx] ERRNO=%d %s\n", |
| 39 | (uintmax_t)phys_addr, len, err, strerror(err)); |
| 40 | return NULL; |
| 41 | } |
| 42 | |
| 43 | return virt_addr; |
| 44 | } |
| 45 | |
| 46 | void unmap_physical(void *virt_addr, size_t len) |
| 47 | { |
no test coverage detected