reactos/hal/halx86/generic/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 #define NDEBUG
  15 #include <hal.h>
  16
  17 /* FUNCTIONS *****************************************************************/
  18
  19 BOOL HalIsaProbe(VOID)
  20 /*
  21  * FUNCTION: Probes for an ISA bus
  22  * RETURNS: True if detected
  23  * NOTE: Since ISA is the default we are called last and always return
  24  * true
  25  */
  26 {
  27    DbgPrint("Assuming ISA bus\n");
  28
  29    /*
  30     * Probe for plug and play support
  31     */
  32    return(TRUE);
  33 }
  34
  35
  36 BOOLEAN STDCALL
  37 HalpTranslateIsaBusAddress(PBUS_HANDLER BusHandler,
  38                            ULONG BusNumber,
  39                            PHYSICAL_ADDRESS BusAddress,
  40                            PULONG AddressSpace,
  41                            PPHYSICAL_ADDRESS TranslatedAddress)
  42 {
  43    BOOLEAN Result;
  44
  45    Result = HalTranslateBusAddress(PCIBus,
  46                                    BusNumber,
  47                                    BusAddress,
  48                                    AddressSpace,
  49                                    TranslatedAddress);
  50    if (Result != FALSE)
  51      return Result;
  52
  53    Result = HalTranslateBusAddress(Internal,
  54                                    BusNumber,
  55                                    BusAddress,
  56                                    AddressSpace,
  57                                    TranslatedAddress);
  58    return Result;
  59 }
  60
  61 ULONG STDCALL
  62 HalpGetIsaInterruptVector(PVOID BusHandler,
  63                           ULONG BusNumber,
  64                           ULONG BusInterruptLevel,
  65                           ULONG BusInterruptVector,
  66                           PKIRQL Irql,
  67                           PKAFFINITY Affinity)
  68 {
  69   ULONG Vector = IRQ2VECTOR(BusInterruptVector);
  70   *Irql = VECTOR2IRQL(Vector);
  71   *Affinity = 0xFFFFFFFF;
  72   return Vector;
  73 }
  74 /* EOF */