adapter.cpp

winddk src目录下的WDM源码压缩!

/*++

Copyright (c) 1997-2000  Microsoft Corporation All Rights Reserved

Module Name:

    adapter.cpp

Abstract:

    Setup and miniport installation.  No resources are used by msvad.

--*/

//
// All the GUIDS for all the miniports end up in this object.
//
#define PUT_GUIDS_HERE

#include <msvad.h>
#include "common.h"

//-----------------------------------------------------------------------------
// Defines                                                                    
//-----------------------------------------------------------------------------

// BUGBUG set this to number of miniports
#define MAX_MINIPORTS 3     // Number of maximum miniports.

//-----------------------------------------------------------------------------
// Externals
//-----------------------------------------------------------------------------

NTSTATUS
CreateMiniportWaveCyclicMSVAD
( 
    OUT PUNKNOWN *,
    IN  REFCLSID,
    IN  PUNKNOWN,
    IN  POOL_TYPE
);

NTSTATUS
CreateMiniportTopologyMSVAD
( 
    OUT PUNKNOWN *,
    IN  REFCLSID,
    IN  PUNKNOWN,
    IN  POOL_TYPE
);

//-----------------------------------------------------------------------------
// Referenced forward.
//-----------------------------------------------------------------------------

extern "C" NTSTATUS
AddDevice
( 
    IN  PDRIVER_OBJECT,
    IN  PDEVICE_OBJECT
);

NTSTATUS
StartDevice
( 
    IN  PDEVICE_OBJECT,      
    IN  PIRP,                
    IN  PRESOURCELIST        
); 

//-----------------------------------------------------------------------------
// Functions
//-----------------------------------------------------------------------------

//=============================================================================
#pragma code_seg("INIT")
extern "C" NTSTATUS
DriverEntry
( 
    IN  PDRIVER_OBJECT          DriverObject,
    IN  PUNICODE_STRING         RegistryPathName
)
{
/*++

Routine Description:

  Installable driver initialization entry point.
  This entry point is called directly by the I/O system.

  All audio adapter drivers can use this code without change.

Arguments:

  DriverObject - pointer to the driver object

  RegistryPath - pointer to a unicode string representing the path,
                   to driver-specific key in the registry.

Return Value:

  STATUS_SUCCESS if successful,
  STATUS_UNSUCCESSFUL otherwise.

--*/
    PAGED_CODE();

    NTSTATUS                    ntStatus;

    DPF(D_TERSE, ("[DriverEntry]"));

    // Tell the class driver to initialize the driver.
    //
    ntStatus =  
        PcInitializeAdapterDriver
        ( 
            DriverObject,
            RegistryPathName,
            AddDevice 
        );

    return ntStatus;
} // DriverEntry
#pragma code_seg()

#pragma code_seg("PAGE")
//=============================================================================
extern "C" NTSTATUS
AddDevice
( 
    IN  PDRIVER_OBJECT          DriverObject,
    IN  PDEVICE_OBJECT          PhysicalDeviceObject 
)
/*++

Routine Description:

  The Plug & Play subsystem is handing us a brand new PDO, for which we
  (by means of INF registration) have been asked to provide a driver.

  We need to determine if we need to be in the driver stack for the device.
  Create a function device object to attach to the stack
  Initialize that device object
  Return status success.

  All audio adapter drivers can use this code without change.
  Set MAX_MINIPORTS depending on the number of miniports that the driver
  uses.

Arguments:

  DriverObject - pointer to a driver object

  PhysicalDeviceObject -  pointer to a device object created by the
                            underlying bus driver.

Return Value:

  NT status code.

--*/
{
    PAGED_CODE();

    NTSTATUS                    ntStatus;

    DPF(D_TERSE, ("[AddDevice]"));

    // Tell the class driver to add the device.
    //
    ntStatus = 
        PcAddAdapterDevice
        ( 
            DriverObject,
            PhysicalDeviceObject,
            PCPFNSTARTDEVICE(StartDevice),
            MAX_MINIPORTS,
            0
        );

    return ntStatus;
} // AddDevice

//=============================================================================
NTSTATUS
InstallSubdevice
( 
    IN  PDEVICE_OBJECT          DeviceObject,
    IN  PIRP                    Irp,
    IN  PWCHAR                  Name,
    IN  REFGUID                 PortClassId,
    IN  REFGUID                 MiniportClassId,
    IN  PFNCREATEINSTANCE       MiniportCreate   OPTIONAL,
    IN  PUNKNOWN                UnknownAdapter   OPTIONAL,
    IN  PRESOURCELIST           ResourceList,
    IN  REFGUID                 PortInterfaceId,
    OUT PUNKNOWN *              OutPortInterface OPTIONAL,
    OUT PUNKNOWN *              OutPortUnknown   OPTIONAL 
)
{
/*++

Routine Description:

    This function creates and registers a subdevice consisting of a port       
    driver, a minport driver and a set of resources bound together.  It will   
    also optionally place a pointer to an interface on the port driver in a    
    specified location before initializing the port driver.  This is done so   
    that a common ISR can have access to the port driver during 
    initialization, when the ISR might fire.                                   

Arguments:

    DeviceObject - pointer to the driver object

    Irp - pointer to the irp object.

    Name - name of the miniport. Passes to PcRegisterSubDevice
 
    PortClassId - port class id. Passed to PcNewPort.

    MiniportClassId - miniport class id. Passed to PcNewMiniport.

    MiniportCreate - pointer to a miniport creation function. If NULL, 
                     PcNewMiniport is used.

    UnknownAdapter - pointer to the adapter object. 
                     Used for initializing the port.

    ResourceList - pointer to the resource list.

    PortInterfaceId - GUID that represents the port interface.
       
    OutPortInterface - pointer to store the port interface

    OutPortUnknown - pointer to store the unknown port interface.

Return Value:

    NT status code.

--*/
    PAGED_CODE();

    ASSERT(DeviceObject);
    ASSERT(Irp);
    ASSERT(Name);

    NTSTATUS                    ntStatus;
    PPORT                       port = NULL;
    PUNKNOWN                    miniport = NULL;
     
    DPF_ENTER(("[InstallSubDevice %s]", Name));

    // Create the port driver object
    //
    ntStatus = PcNewPort(&port, PortClassId);

    // Create the miniport object
    //
    if (NT_SUCCESS(ntStatus))
    {
        if (MiniportCreate)
        {
            ntStatus = 
                MiniportCreate
                ( 
                    &miniport,
                    MiniportClassId,
                    NULL,
                    NonPagedPool 
                );
        }
        else
        {
            ntStatus = 
                PcNewMiniport
                (
                    (PMINIPORT *) &miniport, 
                    MiniportClassId
                );
        }
    }

    // Init the port driver and miniport in one go.
    //
    if (NT_SUCCESS(ntStatus))
    {
        ntStatus = 
            port->Init
            ( 
                DeviceObject,
                Irp,
                miniport,
                UnknownAdapter,
                ResourceList 
            );

        if (NT_SUCCESS(ntStatus))
        {
            // Register the subdevice (port/miniport combination).
            //
            ntStatus = 
                PcRegisterSubdevice
                ( 
                    DeviceObject,
                    Name,
                    port 
                );
        }

        // We don't need the miniport any more.  Either the port has it,
        // or we've failed, and it should be deleted.
        //
        miniport->Release();
    }

    // Deposit the port interfaces if it's needed.
    //
    if (NT_SUCCESS(ntStatus))
    {
        if (OutPortUnknown)
        {
            ntStatus = 
                port->QueryInterface
                ( 
                    IID_IUnknown,
                    (PVOID *)OutPortUnknown 
                );
        }

        if (OutPortInterface)
        {
            ntStatus = 
                port->QueryInterface
                ( 
                    PortInterfaceId,
                    (PVOID *) OutPortInterface 
                );
        }
    }

    if (port)
    {
        port->Release();
    }

    return ntStatus;
} // InstallSubDevice

//=============================================================================
NTSTATUS
StartDevice
( 
    IN  PDEVICE_OBJECT          DeviceObject,     
    IN  PIRP                    Irp,              
    IN  PRESOURCELIST           ResourceList      
)  
{
/*++

Routine Description:

  This function is called by the operating system when the device is 
  started.
  It is responsible for starting the miniports.  This code is specific to    
  the adapter because it calls out miniports for functions that are specific 
  to the adapter.                                                            

Arguments:

  DeviceObject - pointer to the driver object

  Irp - pointer to the irp 

  ResourceList - pointer to the resource list assigned by PnP manager

Return Value:

  NT status code.

--*/
    PAGED_CODE();
    
    ASSERT(DeviceObject);
    ASSERT(Irp);
    ASSERT(ResourceList);

    NTSTATUS                    ntStatus        = STATUS_SUCCESS;
    PUNKNOWN                    unknownTopology = NULL;
    PUNKNOWN                    unknownWave     = NULL;
    PADAPTERCOMMON              pAdapterCommon  = NULL;
    PUNKNOWN                    pUnknownCommon  = NULL;

    DPF_ENTER(("[StartDevice]"));

    // create a new adapter common object
    //
    ntStatus = 
        NewAdapterCommon
        ( 
            &pUnknownCommon,
            IID_IAdapterCommon,
            NULL,
            NonPagedPool 
        );
    if (NT_SUCCESS(ntStatus))
    {
        ntStatus = 
            pUnknownCommon->QueryInterface
            ( 
                IID_IAdapterCommon,
                (PVOID *) &pAdapterCommon 
            );

        if (NT_SUCCESS(ntStatus))
        {
            ntStatus = 
                pAdapterCommon->Init(DeviceObject);

            if (NT_SUCCESS(ntStatus))
            {
                // register with PortCls for power-management services
                //    
                ntStatus = 
                    PcRegisterAdapterPowerManagement
                    ( 
                        PUNKNOWN(pAdapterCommon),
                        DeviceObject 
                    );
            }
        }
    }

    // install MSVAD topology miniport.
    //
    if (NT_SUCCESS(ntStatus))
    {
        ntStatus = 
            InstallSubdevice
            ( 
                DeviceObject,
                Irp,
                L"Topology",
                CLSID_PortTopology,
                CLSID_PortTopology, 
                CreateMiniportTopologyMSVAD,
                pAdapterCommon,
                NULL,
                IID_IPortTopology,
                NULL,
                &unknownTopology 
            );
    }

    // install MSVAD wavecyclic miniport.
    //
    if (NT_SUCCESS(ntStatus))
    {
        ntStatus = 
            InstallSubdevice
            ( 
                DeviceObject,
                Irp,
                L"Wave",
                CLSID_PortWaveCyclic,
                CLSID_PortWaveCyclic,   
                CreateMiniportWaveCyclicMSVAD,
                pAdapterCommon,
                NULL,
                IID_IPortWaveCyclic,
                pAdapterCommon->WavePortDriverDest(),
                &unknownWave 
            );
    }

    if (unknownTopology && unknownWave)
    {
        // register wave <=> topology connections
        // This will connect bridge pins of wavecyclic and topology
        // miniports.
        //
        ntStatus =
            PcRegisterPhysicalConnection
            ( 
                DeviceObject,
                unknownTopology,
                TopologyPhysicalConnections.ulTopologyOut,
                unknownWave,
                TopologyPhysicalConnections.ulWaveIn
            );

        if (NT_SUCCESS(ntStatus))
        {
            ntStatus =
                PcRegisterPhysicalConnection
                ( 
                    DeviceObject,
                    unknownWave,
                    TopologyPhysicalConnections.ulWaveOut,
                    unknownTopology,
                    TopologyPhysicalConnections.ulTopologyIn
                );
        }
    }

    // Release the adapter common object.  It either has other references,
    // or we need to delete it anyway.
    //
    if (pAdapterCommon)
    {
        pAdapterCommon->Release();
    }

    if (pUnknownCommon)
    {
        pUnknownCommon->Release();
    }
    
    if (unknownTopology)
    {
        unknownTopology->Release();
    }

    if (unknownWave)
    {
        unknownWave->Release();
    }

    return ntStatus;
} // StartDevice
#pragma code_seg()