reactos/drivers/bus/pcix/intrface/agpintrf.c

   1 /*
   2  * PROJECT:         ReactOS PCI Bus Driver
   3  * LICENSE:         BSD - See COPYING.ARM in the top level directory
   4  * FILE:            drivers/bus/pci/intrface/agpintrf.c
   5  * PURPOSE:         AGP Interface
   6  * PROGRAMMERS:     ReactOS Portable Systems Group
   7  */
   8
   9 /* INCLUDES *******************************************************************/
  10
  11 #include <pci.h>
  12 #define NDEBUG
  13 #include <debug.h>
  14
  15 /* GLOBALS ********************************************************************/
  16
  17 PCI_INTERFACE AgpTargetInterface =
  18 {
  19     &GUID_AGP_TARGET_BUS_INTERFACE_STANDARD,
  20     sizeof(AGP_BUS_INTERFACE_STANDARD),
  21     AGP_BUS_INTERFACE_V1,
  22     AGP_BUS_INTERFACE_V1,
  23     PCI_INTERFACE_PDO,
  24     0,
  25     PciInterface_AgpTarget,
  26     agpintrf_Constructor,
  27     agpintrf_Initializer
  28 };
  29
  30 /* FUNCTIONS ******************************************************************/
  31
  32 NTSTATUS
  33 NTAPI
  34 agpintrf_Initializer(IN PVOID Instance)
  35 {
  36     UNREFERENCED_PARAMETER(Instance);
  37     /* PnP Interfaces don't get Initialized */
  38     ASSERTMSG("PCI agpintrf_Initializer, unexpected call.", FALSE);
  39     return STATUS_UNSUCCESSFUL;
  40 }
  41
  42 NTSTATUS
  43 NTAPI
  44 agpintrf_Constructor(IN PVOID DeviceExtension,
  45                      IN PVOID Instance,
  46                      IN PVOID InterfaceData,
  47                      IN USHORT Version,
  48                      IN USHORT Size,
  49                      IN PINTERFACE Interface)
  50 {
  51     PPCI_PDO_EXTENSION PdoExtension = (PPCI_PDO_EXTENSION)DeviceExtension;
  52
  53     UNREFERENCED_PARAMETER(Instance);
  54     UNREFERENCED_PARAMETER(InterfaceData);
  55     UNREFERENCED_PARAMETER(Version);
  56     UNREFERENCED_PARAMETER(Size);
  57     UNREFERENCED_PARAMETER(Interface);
  58
  59     /* Only AGP bridges are supported (which are PCI-to-PCI Bridge Devices) */
  60     if ((PdoExtension->BaseClass != PCI_CLASS_BRIDGE_DEV) ||
  61         (PdoExtension->SubClass != PCI_SUBCLASS_BR_PCI_TO_PCI))
  62     {
  63         /* Fail any other PDO */
  64         return STATUS_NOT_SUPPORTED;
  65     }
  66
  67     /* Not yet implemented */
  68     UNIMPLEMENTED_DBGBREAK();
  69     return STATUS_NOT_IMPLEMENTED;
  70 }
  71
  72 /* EOF */