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 #include <ddk/ntddk.h>
  15 #include <bus.h>
  16 #include <halirq.h>
  17
  18 #define NDEBUG
  19 #include <internal/debug.h>
  20
  21 /* FUNCTIONS *****************************************************************/
  22
  23 BOOL HalIsaProbe(VOID)
  24 /*
  25  * FUNCTION: Probes for an ISA bus
  26  * RETURNS: True if detected
  27  * NOTE: Since ISA is the default we are called last and always return
  28  * true
  29  */
  30 {
  31    DbgPrint("Assuming ISA bus\n");
  32
  33    /*
  34     * Probe for plug and play support
  35     */
  36    return(TRUE);
  37 }
  38
  39
  40 BOOLEAN STDCALL
  41 HalpTranslateIsaBusAddress(PBUS_HANDLER BusHandler,
  42                            ULONG BusNumber,
  43                            PHYSICAL_ADDRESS BusAddress,
  44                            PULONG AddressSpace,
  45                            PPHYSICAL_ADDRESS TranslatedAddress)
  46 {
  47    BOOLEAN Result;
  48
  49    Result = HalTranslateBusAddress(PCIBus,
  50                                    BusNumber,
  51                                    BusAddress,
  52                                    AddressSpace,
  53                                    TranslatedAddress);
  54    if (Result != FALSE)
  55      return Result;
  56
  57    Result = HalTranslateBusAddress(Internal,
  58                                    BusNumber,
  59                                    BusAddress,
  60                                    AddressSpace,
  61                                    TranslatedAddress);
  62    return Result;
  63 }
  64
  65 ULONG STDCALL
  66 HalpGetIsaInterruptVector(PVOID BusHandler,
  67                           ULONG BusNumber,
  68                           ULONG BusInterruptLevel,
  69                           ULONG BusInterruptVector,
  70                           PKIRQL Irql,
  71                           PKAFFINITY Affinity)
  72 {
  73   ULONG Vector = IRQ2VECTOR(BusInterruptVector);
  74   *Irql = VECTOR2IRQL(Vector);
  75   *Affinity = 0xFFFFFFFF;
  76   return Vector;
  77 }
  78 /* EOF */