drivers/bus/pcix/arb/tr_irq.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/tr_irq.c
   5  * PURPOSE:         IRQ Translator Interface
   6  * PROGRAMMERS:     ReactOS Portable Systems Group
   7  */
   8
   9 /* INCLUDES *******************************************************************/
  10
  11 #include <pci.h>
  12
  13 #define NDEBUG
  14 #include <debug.h>
  15
  16 /* GLOBALS ********************************************************************/
  17
  18 PCI_INTERFACE TranslatorInterfaceInterrupt =
  19 {
  20     &GUID_TRANSLATOR_INTERFACE_STANDARD,
  21     sizeof(TRANSLATOR_INTERFACE),
  22     0,
  23     0,
  24     PCI_INTERFACE_FDO,
  25     0,
  26     PciTrans_Interrupt,
  27     tranirq_Constructor,
  28     tranirq_Initializer
  29 };
  30
  31 /* FUNCTIONS ******************************************************************/
  32
  33 NTSTATUS
  34 NTAPI
  35 tranirq_Initializer(IN PVOID Instance)
  36 {
  37     UNREFERENCED_PARAMETER(Instance);
  38     /* PnP Interfaces don't get Initialized */
  39     ASSERTMSG("PCI tranirq_Initializer, unexpected call.", FALSE);
  40     return STATUS_UNSUCCESSFUL;
  41 }
  42
  43 NTSTATUS
  44 NTAPI
  45 tranirq_Constructor(IN PVOID DeviceExtension,
  46                     IN PVOID Instance,
  47                     IN PVOID InterfaceData,
  48                     IN USHORT Version,
  49                     IN USHORT Size,
  50                     IN PINTERFACE Interface)
  51 {
  52     PPCI_FDO_EXTENSION FdoExtension = (PPCI_FDO_EXTENSION)DeviceExtension;
  53     ULONG BaseBus, ParentBus;
  54     INTERFACE_TYPE ParentInterface;
  55     ASSERT_FDO(FdoExtension);
  56
  57     UNREFERENCED_PARAMETER(Instance);
  58     UNREFERENCED_PARAMETER(Version);
  59     UNREFERENCED_PARAMETER(Size);
  60
  61     /* Make sure it's the right resource type */
  62     if ((ULONG)InterfaceData != CmResourceTypeInterrupt)
  63     {
  64         /* Fail this invalid request */
  65         DPRINT1("PCI - IRQ trans constructor doesn't like %p in InterfaceSpecificData\n",
  66                 InterfaceData);
  67         return STATUS_INVALID_PARAMETER_3;
  68     }
  69
  70     /* Get the bus, and use this as the interface-specific data */
  71     BaseBus = FdoExtension->BaseBus;
  72     InterfaceData = (PVOID)BaseBus;
  73
  74     /* Check if this is the root bus */
  75     if (PCI_IS_ROOT_FDO(FdoExtension))
  76     {
  77         /* It is, so there is no parent, and it's connected on the system bus */
  78         ParentBus = 0;
  79         ParentInterface = Internal;
  80         DPRINT1("      Is root FDO\n");
  81     }
  82     else
  83     {
  84         /* It's not, so we have to get the root bus' bus number instead */
  85         #if 0 // when have PDO commit
  86         ParentBus = FdoExtension->PhysicalDeviceObject->DeviceExtension->ParentFdoExtension->BaseBus;
  87         ParentInterface = PCIBus;
  88         DPRINT1("      Is bridge FDO, parent bus %x, secondary bus %x\n",
  89                 ParentBus, BaseBus);
  90         #endif
  91     }
  92
  93     /* Now call the legacy HAL interface to get the correct translator */
  94     return HalGetInterruptTranslator(ParentInterface,
  95                                      ParentBus,
  96                                      PCIBus,
  97                                      sizeof(TRANSLATOR_INTERFACE),
  98                                      0,
  99                                      (PTRANSLATOR_INTERFACE)Interface,
 100                                      (PULONG)&InterfaceData);
 101 }
 102
 103 /* EOF */