reactos/drivers/video/videoprt/services.c

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/*
* VideoPort driver
*
* Copyright (C) 2002, 2003, 2004 ReactOS Team
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "videoprt.h"
VOID NTAPI
IntInterfaceReference(PVOID Context)
{
/* Do nothing */
}
VOID NTAPI
IntInterfaceDereference(PVOID Context)
{
/* Do nothing */
}
VP_STATUS NTAPI
VideoPortQueryServices(
IN PVOID HwDeviceExtension,
IN VIDEO_PORT_SERVICES ServicesType,
IN OUT PINTERFACE Interface)
{
TRACE_(VIDEOPRT, "VideoPortQueryServices - ServicesType: 0x%x\n", ServicesType);
switch (ServicesType)
{
#if defined(_M_IX86)
case VideoPortServicesInt10:
if (Interface->Version >= VIDEO_PORT_INT10_INTERFACE_VERSION_1 ||
Interface->Size >= sizeof(VIDEO_PORT_INT10_INTERFACE))
{
VIDEO_PORT_INT10_INTERFACE *Int10Interface =
(VIDEO_PORT_INT10_INTERFACE *)Interface;
Interface->InterfaceReference = IntInterfaceReference;
Interface->InterfaceDereference = IntInterfaceDereference;
Int10Interface->Int10AllocateBuffer = IntInt10AllocateBuffer;
Int10Interface->Int10FreeBuffer = IntInt10FreeBuffer;
Int10Interface->Int10ReadMemory = IntInt10ReadMemory;
Int10Interface->Int10WriteMemory = IntInt10WriteMemory;
Int10Interface->Int10CallBios = IntInt10CallBios;
return NO_ERROR;
}
break;
#endif
case VideoPortServicesAGP:
if ((Interface->Version == VIDEO_PORT_AGP_INTERFACE_VERSION_2 &&
Interface->Size >= sizeof(VIDEO_PORT_AGP_INTERFACE_2)) ||
(Interface->Version == VIDEO_PORT_AGP_INTERFACE_VERSION_1 &&
Interface->Size >= sizeof(VIDEO_PORT_AGP_INTERFACE)))
{
if (NT_SUCCESS(IntAgpGetInterface(HwDeviceExtension, Interface)))
{
return NO_ERROR;
}
}
break;
case VideoPortServicesI2C:
UNIMPLEMENTED;
return ERROR_INVALID_FUNCTION;
case VideoPortServicesHeadless:
UNIMPLEMENTED;
return ERROR_INVALID_FUNCTION;
default:
break;
}
return ERROR_INVALID_FUNCTION;
}
BOOLEAN NTAPI
VideoPortGetAgpServices(
IN PVOID HwDeviceExtension,
OUT PVIDEO_PORT_AGP_SERVICES AgpServices)
{
VIDEO_PORT_AGP_INTERFACE Interface;
VP_STATUS Status;
TRACE_(VIDEOPRT, "VideoPortGetAgpServices\n");
Interface.Size = sizeof(Interface);
Interface.Version = VIDEO_PORT_AGP_INTERFACE_VERSION_1;
Status = VideoPortQueryServices(HwDeviceExtension, VideoPortServicesAGP,
(PINTERFACE)&Interface);
if (Status != NO_ERROR)
{
WARN_(VIDEOPRT, "VideoPortQueryServices() failed!\n");
return FALSE;
}
RtlCopyMemory(AgpServices, &Interface.AgpReservePhysical, sizeof(AgpServices));
return TRUE;
}