mirror of
https://github.com/reactos/reactos.git
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149 lines
4.1 KiB
C
149 lines
4.1 KiB
C
/*
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* VideoPort driver
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*
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* Copyright (C) 2002, 2003, 2004 ReactOS Team
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; see the file COPYING.LIB.
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* If not, write to the Free Software Foundation,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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#include "videoprt.h"
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/* PRIVATE FUNCTIONS **********************************************************/
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BOOLEAN NTAPI
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IntVideoPortInterruptRoutine(
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IN struct _KINTERRUPT *Interrupt,
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IN PVOID ServiceContext)
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{
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PVIDEO_PORT_DEVICE_EXTENSION DeviceExtension = ServiceContext;
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ASSERT(DeviceExtension->DriverExtension->InitializationData.HwInterrupt != NULL);
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return DeviceExtension->DriverExtension->InitializationData.HwInterrupt(
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&DeviceExtension->MiniPortDeviceExtension);
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}
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BOOLEAN NTAPI
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IntVideoPortSetupInterrupt(
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IN PDEVICE_OBJECT DeviceObject,
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IN PVIDEO_PORT_DRIVER_EXTENSION DriverExtension,
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IN PVIDEO_PORT_CONFIG_INFO ConfigInfo)
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{
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NTSTATUS Status;
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PVIDEO_PORT_DEVICE_EXTENSION DeviceExtension;
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DeviceExtension = (PVIDEO_PORT_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
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/*
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* MSDN documentation for VIDEO_PORT_CONFIG_INFO states: "If a miniport driver's
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* HwVidFindAdapter function finds that the video adapter does not generate
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* interrupts or that it cannot determine a valid interrupt vector/level for
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* the adapter, HwVidFindAdapter should set both BusInterruptVector and
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* BusInterruptLevel to zero.
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*/
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if (DriverExtension->InitializationData.HwInterrupt != NULL &&
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(ConfigInfo->BusInterruptLevel != 0 ||
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ConfigInfo->BusInterruptVector != 0))
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{
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ULONG InterruptVector;
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KIRQL Irql;
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KAFFINITY Affinity;
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InterruptVector = HalGetInterruptVector(
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ConfigInfo->AdapterInterfaceType,
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ConfigInfo->SystemIoBusNumber,
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ConfigInfo->BusInterruptLevel,
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ConfigInfo->BusInterruptVector,
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&Irql,
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&Affinity);
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if (InterruptVector == 0)
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{
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WARN_(VIDEOPRT, "HalGetInterruptVector failed\n");
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return FALSE;
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}
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KeInitializeSpinLock(&DeviceExtension->InterruptSpinLock);
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Status = IoConnectInterrupt(
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&DeviceExtension->InterruptObject,
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IntVideoPortInterruptRoutine,
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DeviceExtension,
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&DeviceExtension->InterruptSpinLock,
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InterruptVector,
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Irql,
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Irql,
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ConfigInfo->InterruptMode,
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DeviceExtension->InterruptShared,
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Affinity,
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FALSE);
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if (!NT_SUCCESS(Status))
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{
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WARN_(VIDEOPRT, "IoConnectInterrupt failed with status 0x%08x\n", Status);
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return FALSE;
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}
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}
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return TRUE;
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}
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/* PUBLIC FUNCTIONS ***********************************************************/
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/*
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* @implemented
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*/
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VP_STATUS NTAPI
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VideoPortEnableInterrupt(IN PVOID HwDeviceExtension)
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{
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PVIDEO_PORT_DEVICE_EXTENSION DeviceExtension;
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BOOLEAN Status;
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TRACE_(VIDEOPRT, "VideoPortEnableInterrupt\n");
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DeviceExtension = VIDEO_PORT_GET_DEVICE_EXTENSION(HwDeviceExtension);
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Status = HalEnableSystemInterrupt(
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DeviceExtension->InterruptVector,
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0,
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DeviceExtension->InterruptLevel);
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return Status ? NO_ERROR : ERROR_INVALID_ACCESS;
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}
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/*
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* @implemented
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*/
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VP_STATUS NTAPI
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VideoPortDisableInterrupt(IN PVOID HwDeviceExtension)
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{
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PVIDEO_PORT_DEVICE_EXTENSION DeviceExtension;
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BOOLEAN Status;
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TRACE_(VIDEOPRT, "VideoPortDisableInterrupt\n");
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DeviceExtension = VIDEO_PORT_GET_DEVICE_EXTENSION(HwDeviceExtension);
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Status = HalDisableSystemInterrupt(
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DeviceExtension->InterruptVector,
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0);
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return Status ? NO_ERROR : ERROR_INVALID_ACCESS;
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}
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