| /* |
| * inteltool - dump all registers on an Intel CPU + chipset based system. |
| * |
| * Copyright (C) 2008 by coresystems GmbH |
| * |
| * 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; version 2 of the License. |
| * |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <sys/mman.h> |
| |
| #include "inteltool.h" |
| |
| /* |
| * (G)MCH MMIO Config Space |
| */ |
| int print_mchbar(struct pci_dev *nb) |
| { |
| int i, size = (16 * 1024); |
| volatile uint8_t *mchbar; |
| uint32_t mchbar_phys; |
| |
| printf("\n============= MCHBAR ============\n\n"); |
| |
| switch (nb->device_id) { |
| case PCI_DEVICE_ID_INTEL_82945GM: |
| mchbar_phys = pci_read_long(nb, 0x44) & 0xfffffffe; |
| break; |
| case 0x1234: // Dummy for non-existent functionality |
| printf("This northbrigde does not have MCHBAR.\n"); |
| return 1; |
| default: |
| printf("Error: Dumping MCHBAR on this northbridge is not (yet) supported.\n"); |
| return 1; |
| } |
| |
| mchbar = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED, |
| fd_mem, (off_t) mchbar_phys); |
| |
| if (mchbar == MAP_FAILED) { |
| perror("Error mapping MCHBAR"); |
| exit(1); |
| } |
| |
| printf("MCHBAR = 0x%08x (MEM)\n\n", mchbar_phys); |
| |
| for (i = 0; i < size; i += 4) { |
| if (*(uint32_t *)(mchbar + i)) |
| printf("0x%04x: 0x%08x\n", i, *(uint32_t *)(mchbar+i)); |
| } |
| |
| munmap((void *)mchbar, size); |
| return 0; |
| } |
| |
| |