win32ss/drivers/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 #define NDEBUG
  25 #include <debug.h>
  26
  27 VOID NTAPI
  28 IntInterfaceReference(PVOID Context)
  29 {
  30    /* Do nothing */
  31 }
  32
  33 VOID NTAPI
  34 IntInterfaceDereference(PVOID Context)
  35 {
  36    /* Do nothing */
  37 }
  38
  39 VP_STATUS NTAPI
  40 VideoPortQueryServices(
  41   IN PVOID HwDeviceExtension,
  42   IN VIDEO_PORT_SERVICES ServicesType,
  43   IN OUT PINTERFACE Interface)
  44 {
  45    TRACE_(VIDEOPRT, "VideoPortQueryServices - ServicesType: 0x%x\n", ServicesType);
  46
  47    switch (ServicesType)
  48    {
  49 #if defined(_M_IX86)
  50       case VideoPortServicesInt10:
  51          if (Interface->Version >= VIDEO_PORT_INT10_INTERFACE_VERSION_1 ||
  52              Interface->Size >= sizeof(VIDEO_PORT_INT10_INTERFACE))
  53          {
  54             VIDEO_PORT_INT10_INTERFACE *Int10Interface =
  55                (VIDEO_PORT_INT10_INTERFACE *)Interface;
  56
  57             Interface->InterfaceReference = IntInterfaceReference;
  58             Interface->InterfaceDereference = IntInterfaceDereference;
  59             Int10Interface->Int10AllocateBuffer = IntInt10AllocateBuffer;
  60             Int10Interface->Int10FreeBuffer = IntInt10FreeBuffer;
  61             Int10Interface->Int10ReadMemory = IntInt10ReadMemory;
  62             Int10Interface->Int10WriteMemory = IntInt10WriteMemory;
  63             Int10Interface->Int10CallBios = IntInt10CallBios;
  64             return NO_ERROR;
  65          }
  66          break;
  67 #endif
  68       case VideoPortServicesAGP:
  69          if ((Interface->Version == VIDEO_PORT_AGP_INTERFACE_VERSION_2 &&
  70               Interface->Size >= sizeof(VIDEO_PORT_AGP_INTERFACE_2)) ||
  71              (Interface->Version == VIDEO_PORT_AGP_INTERFACE_VERSION_1 &&
  72               Interface->Size >= sizeof(VIDEO_PORT_AGP_INTERFACE)))
  73          {
  74             if (NT_SUCCESS(IntAgpGetInterface(HwDeviceExtension, Interface)))
  75             {
  76                return NO_ERROR;
  77             }
  78          }
  79          break;
  80
  81       case VideoPortServicesI2C:
  82           UNIMPLEMENTED;
  83           return ERROR_INVALID_FUNCTION;
  84
  85       case VideoPortServicesHeadless:
  86          UNIMPLEMENTED;
  87          return ERROR_INVALID_FUNCTION;
  88
  89       default:
  90          break;
  91    }
  92
  93    return ERROR_INVALID_FUNCTION;
  94 }
  95
  96 BOOLEAN NTAPI
  97 VideoPortGetAgpServices(
  98    IN PVOID HwDeviceExtension,
  99    OUT PVIDEO_PORT_AGP_SERVICES AgpServices)
 100 {
 101    VIDEO_PORT_AGP_INTERFACE Interface;
 102    VP_STATUS Status;
 103
 104    TRACE_(VIDEOPRT, "VideoPortGetAgpServices\n");
 105
 106    Interface.Size = sizeof(Interface);
 107    Interface.Version = VIDEO_PORT_AGP_INTERFACE_VERSION_1;
 108
 109    Status = VideoPortQueryServices(HwDeviceExtension, VideoPortServicesAGP,
 110                                    (PINTERFACE)&Interface);
 111    if (Status != NO_ERROR)
 112    {
 113       WARN_(VIDEOPRT, "VideoPortQueryServices() failed!\n");
 114       return FALSE;
 115    }
 116
 117    RtlCopyMemory(AgpServices, &Interface.AgpReservePhysical, sizeof(VIDEO_PORT_AGP_SERVICES));
 118    return TRUE;
 119 }