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/*
* 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;
}
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