util/inteltool/gfx.c

   1 /*
   2  * inteltool - dump all registers on an Intel CPU + chipset based system.
   3  *
   4  * Copyright (C) 2008-2010 by coresystems GmbH
   5  * Copyright (C) 2012 Anton Kochkov
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <inttypes.h>
  20 #include "inteltool.h"
  21
  22 #define MMIO_SIZE 0x100000
  23
  24 int print_gfx(struct pci_dev *gfx)
  25 {
  26         uint64_t mmio_phys;
  27         uint8_t *mmio;
  28         uint32_t i;
  29         if (!gfx) {
  30                 printf ("No IGD found\n");
  31                 return 0;
  32         }
  33         printf("\n============= IGD ==============\n\n");
  34         mmio_phys = gfx->base_addr[0] & ~0x7ULL;
  35         printf("IGD MMIO = 0x%08llx (MEM)\n\n", (unsigned long long)mmio_phys);
  36         mmio = map_physical(mmio_phys, MMIO_SIZE);
  37         if (mmio == NULL) {
  38                 perror("Error mapping MMIO");
  39                 exit(1);
  40         }
  41         for (i = 0; i < MMIO_SIZE; i += 4) {
  42                 if (*(uint32_t *)(mmio + i))
  43                         printf("0x%06x: 0x%08x\n", i, *(uint32_t *)(mmio + i));
  44         }
  45         unmap_physical((void *)mmio, MMIO_SIZE);
  46         return 0;
  47
  48 }