drivers/video/videoprt/services.c

   1 /*
   2  * VideoPort driver
   3  *
   4  * Copyright (C) 2002, 2003, 2004 ReactOS Team
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  */
  21
  22 #include "videoprt.h"
  23
  24 VOID NTAPI
  25 IntInterfaceReference(PVOID Context)
  26 {
  27    /* Do nothing */
  28 }
  29
  30 VOID NTAPI
  31 IntInterfaceDereference(PVOID Context)
  32 {
  33    /* Do nothing */
  34 }
  35
  36 VP_STATUS NTAPI
  37 VideoPortQueryServices(
  38   IN PVOID HwDeviceExtension,
  39   IN VIDEO_PORT_SERVICES ServicesType,
  40   IN OUT PINTERFACE Interface)
  41 {
  42    TRACE_(VIDEOPRT, "VideoPortQueryServices - ServicesType: 0x%x\n", ServicesType);
  43
  44    switch (ServicesType)
  45    {
  46       case VideoPortServicesInt10:
  47          if (Interface->Version >= VIDEO_PORT_INT10_INTERFACE_VERSION_1 ||
  48              Interface->Size >= sizeof(VIDEO_PORT_INT10_INTERFACE))
  49          {
  50             VIDEO_PORT_INT10_INTERFACE *Int10Interface =
  51                (VIDEO_PORT_INT10_INTERFACE *)Interface;
  52
  53             Interface->InterfaceReference = IntInterfaceReference;
  54             Interface->InterfaceDereference = IntInterfaceDereference;
  55             Int10Interface->Int10AllocateBuffer = IntInt10AllocateBuffer;
  56             Int10Interface->Int10FreeBuffer = IntInt10FreeBuffer;
  57             Int10Interface->Int10ReadMemory = IntInt10ReadMemory;
  58             Int10Interface->Int10WriteMemory = IntInt10WriteMemory;
  59             Int10Interface->Int10CallBios = IntInt10CallBios;
  60             return NO_ERROR;
  61          }
  62          break;
  63
  64       case VideoPortServicesAGP:
  65          if ((Interface->Version == VIDEO_PORT_AGP_INTERFACE_VERSION_2 &&
  66               Interface->Size >= sizeof(VIDEO_PORT_AGP_INTERFACE_2)) ||
  67              (Interface->Version == VIDEO_PORT_AGP_INTERFACE_VERSION_1 &&
  68               Interface->Size >= sizeof(VIDEO_PORT_AGP_INTERFACE)))
  69          {
  70             if (NT_SUCCESS(IntAgpGetInterface(HwDeviceExtension, Interface)))
  71             {
  72                return NO_ERROR;
  73             }
  74          }
  75          break;
  76
  77       case VideoPortServicesI2C:
  78           UNIMPLEMENTED;
  79           return ERROR_INVALID_FUNCTION;
  80
  81       case VideoPortServicesHeadless:
  82          UNIMPLEMENTED;
  83          return ERROR_INVALID_FUNCTION;
  84
  85       default:
  86          break;
  87    }
  88
  89    return ERROR_INVALID_FUNCTION;
  90 }
  91
  92 BOOLEAN NTAPI
  93 VideoPortGetAgpServices(
  94    IN PVOID HwDeviceExtension,
  95    OUT PVIDEO_PORT_AGP_SERVICES AgpServices)
  96 {
  97    VIDEO_PORT_AGP_INTERFACE Interface;
  98    VP_STATUS Status;
  99
 100    TRACE_(VIDEOPRT, "VideoPortGetAgpServices\n");
 101
 102    Interface.Size = sizeof(Interface);
 103    Interface.Version = VIDEO_PORT_AGP_INTERFACE_VERSION_1;
 104
 105    Status = VideoPortQueryServices(HwDeviceExtension, VideoPortServicesAGP,
 106                                    (PINTERFACE)&Interface);
 107    if (Status != NO_ERROR)
 108    {
 109       WARN_(VIDEOPRT, "VideoPortQueryServices() failed!\n");
 110       return FALSE;
 111    }
 112
 113    RtlCopyMemory(AgpServices, &Interface.AgpReservePhysical, sizeof(AgpServices));
 114    return TRUE;
 115 }