drivers/bus/pcix/arb/ar_memio.c

   1 /*
   2  * PROJECT:         ReactOS PCI Bus Driver
   3  * LICENSE:         BSD - See COPYING.ARM in the top level directory
   4  * FILE:            drivers/bus/pci/arb/ar_memiono.c
   5  * PURPOSE:         Memory and I/O Port Resource Arbitration
   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 ArbiterInterfaceMemory =
  18 {
  19     &GUID_ARBITER_INTERFACE_STANDARD,
  20     sizeof(ARBITER_INTERFACE),
  21     0,
  22     0,
  23     PCI_INTERFACE_FDO,
  24     0,
  25     PciArb_Memory,
  26     armem_Constructor,
  27     armem_Initializer
  28 };
  29
  30 PCI_INTERFACE ArbiterInterfaceIo =
  31 {
  32     &GUID_ARBITER_INTERFACE_STANDARD,
  33     sizeof(ARBITER_INTERFACE),
  34     0,
  35     0,
  36     PCI_INTERFACE_FDO,
  37     0,
  38     PciArb_Io,
  39     ario_Constructor,
  40     ario_Initializer
  41 };
  42
  43 /* FUNCTIONS ******************************************************************/
  44
  45 NTSTATUS
  46 NTAPI
  47 ario_Initializer(IN PVOID Instance)
  48 {
  49     /* Not yet implemented */
  50     UNIMPLEMENTED;
  51     //while (TRUE);
  52     return STATUS_SUCCESS;
  53 }
  54
  55 NTSTATUS
  56 NTAPI
  57 ario_Constructor(IN PVOID DeviceExtension,
  58                  IN PVOID PciInterface,
  59                  IN PVOID InterfaceData,
  60                  IN USHORT Version,
  61                  IN USHORT Size,
  62                  IN PINTERFACE Interface)
  63 {
  64     PPCI_FDO_EXTENSION FdoExtension = (PPCI_FDO_EXTENSION)DeviceExtension;
  65     NTSTATUS Status;
  66     PAGED_CODE();
  67
  68     /* Make sure it's the expected interface */
  69     if ((ULONG)InterfaceData != CmResourceTypePort)
  70     {
  71         /* Arbiter support must have been initialized first */
  72         if (FdoExtension->ArbitersInitialized)
  73         {
  74             /* Not yet implemented */
  75             UNIMPLEMENTED;
  76             while (TRUE);
  77         }
  78         else
  79         {
  80             /* No arbiters for this FDO */
  81             Status = STATUS_NOT_SUPPORTED;
  82         }
  83     }
  84     else
  85     {
  86         /* Not the right interface */
  87         Status = STATUS_INVALID_PARAMETER_5;
  88     }
  89
  90     /* Return the status */
  91     return Status;
  92 }
  93
  94 VOID
  95 NTAPI
  96 ario_ApplyBrokenVideoHack(IN PPCI_FDO_EXTENSION FdoExtension)
  97 {
  98     PPCI_ARBITER_INSTANCE PciArbiter;
  99     //PARBITER_INSTANCE CommonInstance;
 100     NTSTATUS Status;
 101
 102     /* Only valid for root FDOs who are being applied the hack for the first time */
 103     ASSERT(!FdoExtension->BrokenVideoHackApplied);
 104     ASSERT(PCI_IS_ROOT_FDO(FdoExtension));
 105
 106     /* Find the I/O arbiter */
 107     PciArbiter = (PVOID)PciFindNextSecondaryExtension(FdoExtension->
 108                                                       SecondaryExtension.Next,
 109                                                       PciArb_Io);
 110     ASSERT(PciArbiter);
 111 #if 0 // when arb exist
 112     /* Get the Arb instance */
 113     CommonInstance = &PciArbiter->CommonInstance;
 114
 115     /* Free the two lists, enabling full VGA access */
 116     ArbFreeOrderingList(&CommonInstance->OrderingList);
 117     ArbFreeOrderingList(&CommonInstance->ReservedList);
 118
 119     /* Build the ordering for broken video PCI access */
 120     Status = ArbBuildAssignmentOrdering(CommonInstance,
 121                                         L"Pci",
 122                                         L"BrokenVideo",
 123                                         NULL);
 124     ASSERT(NT_SUCCESS(Status));
 125 #else
 126     Status = STATUS_SUCCESS;
 127     UNIMPLEMENTED;
 128     while (TRUE);
 129 #endif
 130     /* Now the hack has been applied */
 131     FdoExtension->BrokenVideoHackApplied = TRUE;
 132 }
 133
 134 NTSTATUS
 135 NTAPI
 136 armem_Initializer(IN PVOID Instance)
 137 {
 138     /* Not yet implemented */
 139     UNIMPLEMENTED;
 140     //while (TRUE);
 141     return STATUS_SUCCESS;
 142 }
 143
 144 NTSTATUS
 145 NTAPI
 146 armem_Constructor(IN PVOID DeviceExtension,
 147                   IN PVOID PciInterface,
 148                   IN PVOID InterfaceData,
 149                   IN USHORT Version,
 150                   IN USHORT Size,
 151                   IN PINTERFACE Interface)
 152 {
 153     PPCI_FDO_EXTENSION FdoExtension = (PPCI_FDO_EXTENSION)DeviceExtension;
 154     NTSTATUS Status;
 155     PAGED_CODE();
 156
 157     /* Make sure it's the expected interface */
 158     if ((ULONG)InterfaceData != CmResourceTypeMemory)
 159     {
 160         /* Arbiter support must have been initialized first */
 161         if (FdoExtension->ArbitersInitialized)
 162         {
 163             /* Not yet implemented */
 164             UNIMPLEMENTED;
 165             while (TRUE);
 166         }
 167         else
 168         {
 169             /* No arbiters for this FDO */
 170             Status = STATUS_NOT_SUPPORTED;
 171         }
 172     }
 173     else
 174     {
 175         /* Not the right interface */
 176         Status = STATUS_INVALID_PARAMETER_5;
 177     }
 178
 179     /* Return the status */
 180     return Status;
 181 }
 182
 183 /* EOF */