lib/libsys/pci_next_dev.c

   1 /*
   2 pci_next_dev.c
   3 */
   4
   5 #include "pci.h"
   6 #include "syslib.h"
   7 #include <minix/sysutil.h>
   8
   9 /*===========================================================================*
  10  *                              pci_next_dev                                 *
  11  *===========================================================================*/
  12 int pci_next_dev(devindp, vidp, didp)
  13 int *devindp;
  14 u16_t *vidp;
  15 u16_t *didp;
  16 {
  17         int r;
  18         message m;
  19
  20         m.m_type= BUSC_PCI_NEXT_DEV;
  21         m.m1_i1= *devindp;
  22
  23         r= ipc_sendrec(pci_procnr, &m);
  24         if (r != 0)
  25                 panic("pci_next_dev: can't talk to PCI: %d", r);
  26
  27         if (m.m_type == 1)
  28         {
  29                 *devindp= m.m1_i1;
  30                 *vidp= m.m1_i2;
  31                 *didp= m.m1_i3;
  32 #if 0
  33                 printf("pci_next_dev: got device %d, %04x/%04x\n",
  34                         *devindp, *vidp, *didp);
  35 #endif
  36                 return 1;
  37         }
  38         if (m.m_type != 0)
  39                 panic("pci_next_dev: got bad reply from PCI: %d", m.m_type);
  40
  41         return 0;
  42 }
  43