reactos/ntoskrnl/hal/x86/isa.c

   1 /* $Id: isa.c,v 1.6 2000/04/09 15:58:13 ekohl Exp $
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS kernel
   5  * FILE:            ntoskrnl/hal/isa.c
   6  * PURPOSE:         Interfaces to the ISA bus
   7  * PROGRAMMER:      David Welch (welch@mcmail.com)
   8  * UPDATE HISTORY:
   9  *               05/06/98: Created
  10  */
  11
  12 /* INCLUDES ***************************************************************/
  13
  14 #include <ddk/ntddk.h>
  15
  16
  17 typedef struct _BUS_HANDLER *PBUS_HANDLER;
  18
  19
  20 /* FUNCTIONS *****************************************************************/
  21
  22 BOOL HalIsaProbe(VOID)
  23 /*
  24  * FUNCTION: Probes for an ISA bus
  25  * RETURNS: True if detected
  26  * NOTE: Since ISA is the default we are called last and always return
  27  * true
  28  */
  29 {
  30    DbgPrint("Assuming ISA bus\n");
  31
  32    /*
  33     * Probe for plug and play support
  34     */
  35    return(TRUE);
  36 }
  37
  38
  39 BOOLEAN
  40 STDCALL
  41 HalpTranslateIsaBusAddress (
  42         PBUS_HANDLER            BusHandler,
  43         ULONG                   BusNumber,
  44         PHYSICAL_ADDRESS        BusAddress,
  45         PULONG                  AddressSpace,
  46         PPHYSICAL_ADDRESS       TranslatedAddress
  47         )
  48 {
  49         BOOLEAN Result;
  50
  51         Result = HalTranslateBusAddress (PCIBus,
  52                                          BusNumber,
  53                                          BusAddress,
  54                                          AddressSpace,
  55                                          TranslatedAddress);
  56
  57         if (Result != FALSE)
  58                 return Result;
  59
  60         Result = HalTranslateBusAddress (Internal,
  61                                          BusNumber,
  62                                          BusAddress,
  63                                          AddressSpace,
  64                                          TranslatedAddress);
  65
  66         return Result;
  67 }
  68
  69 /* EOF */