util/pci.c

   1 /* pci.c - Generic PCI interfaces.  */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2007,2009  Free Software Foundation, Inc.
   5  *
   6  *  GRUB is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB 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  *  You should have received a copy of the GNU General Public License
  17  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <grub/pci.h>
  21 #include <grub/dl.h>
  22 #include <grub/util/misc.h>
  23
  24 grub_pci_address_t
  25 grub_pci_make_address (grub_pci_device_t dev, int reg)
  26 {
  27   grub_pci_address_t ret;
  28   ret.dev = dev;
  29   ret.pos = reg;
  30   return ret;
  31 }
  32
  33 void
  34 grub_pci_iterate (grub_pci_iteratefunc_t hook)
  35 {
  36   struct pci_device_iterator *iter;
  37   struct pci_slot_match slot;
  38   struct pci_device *dev;
  39   slot.domain = PCI_MATCH_ANY;
  40   slot.bus = PCI_MATCH_ANY;
  41   slot.dev = PCI_MATCH_ANY;
  42   slot.func = PCI_MATCH_ANY;
  43   iter = pci_slot_match_iterator_create (&slot);
  44   while ((dev = pci_device_next (iter)))
  45     hook (dev, dev->vendor_id | (dev->device_id << 16));
  46   pci_iterator_destroy (iter);
  47 }
  48
  49 void *
  50 grub_pci_device_map_range (grub_pci_device_t dev, grub_addr_t base,
  51                            grub_size_t size)
  52 {
  53   void *addr;
  54   int err;
  55   err = pci_device_map_range (dev, base, size, PCI_DEV_MAP_FLAG_WRITABLE, &addr);
  56   if (err)
  57     grub_util_error ("mapping 0x%x failed (error %d)\n", base, err);
  58   return addr;
  59 }
  60
  61 void
  62 grub_pci_device_unmap_range (grub_pci_device_t dev, void *mem,
  63                              grub_size_t size)
  64 {
  65   pci_device_unmap_range (dev, mem, size);
  66 }
  67
  68 GRUB_MOD_INIT (pci)
  69 {
  70   pci_system_init ();
  71 }
  72
  73 GRUB_MOD_FINI (pci)
  74 {
  75   pci_system_cleanup ();
  76 }