reactos/ntoskrnl/hal/x86/pci.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS kernel
   4  * FILE:            ntoskrnl/hal/x86/pci.c
   5  * PURPOSE:         Interfaces to the PCI bus
   6  * PROGRAMMER:      David Welch (welch@mcmail.com)
   7  * UPDATE HISTORY:
   8  *               05/06/98: Created
   9  */
  10
  11 /*
  12  * NOTES: Sections copied from the Linux pci support
  13  */
  14
  15 /* INCLUDES ***************************************************************/
  16
  17 #include <ddk/ntddk.h>
  18
  19 /* FUNCTIONS **************************************************************/
  20
  21 #define PCI_SERVICE (('$' << 0) + ('P' << 8) + ('C' << 16) + ('I'<<24))
  22
  23 BOOL HalPciProbe()
  24 /*
  25  * FUNCTION: Probes for an PCI bus
  26  * RETURNS: True if detected
  27  */
  28 {
  29    if (Hal_bios32_is_service_present(PCI_SERVICE))
  30      {
  31         DbgPrint("Detected PCI service\n");
  32         return(TRUE);
  33      }
  34    return(FALSE);
  35 }