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"
 
#define NDEBUG
#include <debug.h>
 
VOID
NTAPI
IntInterfaceReference(
    _In_ PVOID Context)
{
    /* Do nothing */
}
 
VOID
NTAPI
IntInterfaceDereference(
    _In_ PVOID Context)
{
    /* Do nothing */
}
 
VP_STATUS
NTAPI
VideoPortQueryServices(
    _In_ PVOID HwDeviceExtension,
    _In_ VIDEO_PORT_SERVICES ServicesType,
    _Inout_ PINTERFACE Interface)
{
    TRACE_(VIDEOPRT, "VideoPortQueryServices - ServicesType: 0x%x\n", ServicesType);
 
    switch (ServicesType)
    {
        case VideoPortServicesInt10:
            if (Interface->Version >= VIDEO_PORT_INT10_INTERFACE_VERSION_1 ||
                Interface->Size >= sizeof(VIDEO_PORT_INT10_INTERFACE))
            {
                PVIDEO_PORT_INT10_INTERFACE Int10Interface =
                    (PVIDEO_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;
 
        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;
}