hal/halx86/isa.c

   1 /* $Id$
   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 #include <bus.h>
  16
  17
  18 /* FUNCTIONS *****************************************************************/
  19
  20 BOOL HalIsaProbe(VOID)
  21 /*
  22  * FUNCTION: Probes for an ISA bus
  23  * RETURNS: True if detected
  24  * NOTE: Since ISA is the default we are called last and always return
  25  * true
  26  */
  27 {
  28    DbgPrint("Assuming ISA bus\n");
  29
  30    /*
  31     * Probe for plug and play support
  32     */
  33    return(TRUE);
  34 }
  35
  36
  37 BOOLEAN STDCALL
  38 HalpTranslateIsaBusAddress(PBUS_HANDLER BusHandler,
  39                            ULONG BusNumber,
  40                            PHYSICAL_ADDRESS BusAddress,
  41                            PULONG AddressSpace,
  42                            PPHYSICAL_ADDRESS TranslatedAddress)
  43 {
  44    BOOLEAN Result;
  45
  46    Result = HalTranslateBusAddress(PCIBus,
  47                                    BusNumber,
  48                                    BusAddress,
  49                                    AddressSpace,
  50                                    TranslatedAddress);
  51    if (Result != FALSE)
  52      return Result;
  53
  54    Result = HalTranslateBusAddress(Internal,
  55                                    BusNumber,
  56                                    BusAddress,
  57                                    AddressSpace,
  58                                    TranslatedAddress);
  59    return Result;
  60 }
  61
  62 ULONG STDCALL
  63 HalpGetIsaInterruptVector(PVOID BusHandler,
  64                           ULONG BusNumber,
  65                           ULONG BusInterruptLevel,
  66                           ULONG BusInterruptVector,
  67                           PKIRQL Irql,
  68                           PKAFFINITY Affinity)
  69 {
  70   *Irql = PROFILE_LEVEL - BusInterruptVector;
  71   *Affinity = 0xFFFFFFFF;
  72   return BusInterruptVector;
  73 }
  74 /* EOF */