lib/libsys/pci_find_dev.c

   1 /*
   2 pci_find_dev.c
   3 */
   4
   5 #include "pci.h"
   6 #include "syslib.h"
   7 #include <minix/sysutil.h>
   8
   9 /*===========================================================================*
  10  *                              pci_find_dev                                 *
  11  *===========================================================================*/
  12 PUBLIC int pci_find_dev(bus, dev, func, devindp)
  13 u8_t bus;
  14 u8_t dev;
  15 u8_t func;
  16 int *devindp;
  17 {
  18         int r;
  19         message m;
  20
  21         m.m_type= BUSC_PCI_FIND_DEV;
  22         m.m1_i1= bus;
  23         m.m1_i2= dev;
  24         m.m1_i3= func;
  25
  26         r= sendrec(pci_procnr, &m);
  27         if (r != 0)
  28                 panic("pci_find_dev: can't talk to PCI: %d", r);
  29
  30         if (m.m_type == 1)
  31         {
  32                 *devindp= m.m1_i1;
  33                 printf("pci_find_dev: got device %d for %d.%d.%d\n",
  34                         *devindp, bus, dev, func);
  35                 return 1;
  36         }
  37         if (m.m_type != 0)
  38                 panic("pci_find_dev: got bad reply from PCI: %d", m.m_type);
  39
  40         printf("pci_find_dev: got nothing\n");
  41         return 0;
  42 }
  43