/*++
*******************************************************************************
* Copyright (c) 1999-2000 Digi International Inc., All Rights Reserved        *
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Module Name:

	asyncreate.h

Abstract:


Author:

	Sandy Haapala

--*/
#ifndef ASYNCREATE_H
#define ASYNCREATE_H

NTSTATUS AsynDeviceCreate( IN PDEVICE_OBJECT pDeviceObject, IN PIRP pIrp );
NTSTATUS AsynDeviceClose( IN PDEVICE_OBJECT pDeviceObject, IN PIRP pIrp );
NTSTATUS AsynDeviceCleanup( IN PDEVICE_OBJECT pDeviceObject, IN PIRP pIrp );
NTSTATUS AsynDeviceFlushBuffers( IN PDEVICE_OBJECT pDeviceObject, IN PIRP pIrp );
NTSTATUS AsynResetPortSettings( IN PASYN_PORT_EXT pPortExt );

NTSTATUS AsynInitializeSdxbPort(	IN PASYN_PORT_EXT pPortExt, IN BOOLEAN fPowerStateChange );

VOID AsynOpenOnSdxbSync( IN	PASYN_PORT_EXT	pPortExt, IN USHORT SyncSeq );
VOID AsynCloseOnSdxbSync( IN	PASYN_PORT_EXT	pPortExt, IN USHORT SyncSeq );

VOID AsynCloseTimedOut(	IN PKDPC pPortDpc, IN PASYN_PORT_EXT pPortExt, IN PVOID, IN PVOID );
VOID AsynCloseSdxbPort( IN PASYN_PORT_EXT pPortExt );

// ISDN CC Message encapsulation size 
#define ISDN_MESSAGE_ENCAP_SIZE  4
#define MAX_CONTROL_BUFFER_SIZE (sizeof( union ISDN_primitives)+ISDN_MESSAGE_ENCAP_SIZE)

// Start high priority Rx Engine - Data should not be received at high priority so data buffer size is set to zero 
#define Start_HighPriority_RxEngine(DEVICE) \
{ \
	ULONG	cbMaxControl = sizeof (union ISDN_primitives) + ISDN_MESSAGE_ENCAP_SIZE; \
   																										 \
   (DEVICE)->hRxEngine_HighPriority = RxEngineStart( (DEVICE)->DsPortHandle, DEVICE, AsynOnHighPriorityData, AsynOnHighPriorityCData, \
   				MAX_CONTROL_BUFFER_SIZE, 0, 0, 1, DS_PRIORITY_HIGH ); \
} 

// Start low priority RxEngine for normal priority (data/control) messages. 
#define Start_LowPriority_RxEngine(DEVICE) \
{ \
	ULONG cbMaxControl = sizeof (union ISDN_primitives) + ISDN_MESSAGE_ENCAP_SIZE; \
	(DEVICE)->hRxEngine_LowPriority = RxEngineStart( (DEVICE)->DsPortHandle, DEVICE, AsynOnData, AsynOnCData, \
													MAX_CONTROL_BUFFER_SIZE, (DEVICE)->SdxbValues.PortParams.maxlen, sizeof(RX_BUF), 1, DS_PRIORITY_LOW ); \
} 

#endif
