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