lib/libsys/pci_get_bar.c

   1 /*
   2 pci_get_bar.c
   3 */
   4
   5 #include "pci.h"
   6 #include "syslib.h"
   7 #include <minix/sysutil.h>
   8
   9 /*===========================================================================*
  10  *                              pci_get_bar                                  *
  11  *===========================================================================*/
  12 int pci_get_bar(devind, port, base, size, ioflag)
  13 int devind;
  14 int port;
  15 u32_t *base;
  16 u32_t *size;
  17 int *ioflag;
  18 {
  19         int r;
  20         message m;
  21
  22         m.m_type= BUSC_PCI_GET_BAR;
  23         m.BUSC_PGB_DEVIND= devind;
  24         m.BUSC_PGB_PORT= port;
  25
  26         r= ipc_sendrec(pci_procnr, &m);
  27         if (r != 0)
  28                 panic("pci_get_bar: can't talk to PCI: %d", r);
  29
  30         if (m.m_type == 0)
  31         {
  32                 *base= m.BUSC_PGB_BASE;
  33                 *size= m.BUSC_PGB_SIZE;
  34                 *ioflag= m.BUSC_PGB_IOFLAG;
  35         }
  36         return m.m_type;
  37 }
  38