buspdo.h

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#if !defined(_SKLHDAUDBUS_BUSPDO_H_)
#define _SKLHDAUDBUS_BUSPDO_H_
 
#define MAX_INSTANCE_ID_LEN 80
 
typedef struct _CODEC_UNSOLICITED_CALLBACK {
    BOOLEAN inUse;
    PVOID Context;
    PHDAUDIO_UNSOLICITED_RESPONSE_CALLBACK Routine;
} CODEC_UNSOLICITED_CALLBACK, *PCODEC_UNSOLICIT_CALLBACK;
 
typedef struct _CODEC_IDS {
    UINT32 CodecAddress;
    BOOL IsGraphicsCodec;
 
    UINT8 FunctionGroupStartNode;
 
    UINT16 CtlrDevId;
    UINT16 CtlrVenId;
 
    BOOL IsDSP;
 
    UINT16 FuncId;
    UINT16 VenId;
    UINT16 DevId;
    UINT32 SubsysId;
    UINT16 RevId;
} CODEC_IDS, * PCODEC_IDS;
 
typedef struct _PDO_IDENTIFICATION_DESCRIPTION
{
    WDF_CHILD_IDENTIFICATION_DESCRIPTION_HEADER Header; // should contain this header
 
    PFDO_CONTEXT FdoContext;
 
    CODEC_IDS CodecIds;
 
} PDO_IDENTIFICATION_DESCRIPTION, * PPDO_IDENTIFICATION_DESCRIPTION;
 
#define MAX_UNSOLICIT_CALLBACKS 64 // limit is 64 for hdaudbus (See: https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/hdaudio/nc-hdaudio-pregister_event_callback)
#define SUBTAG_MASK 0x3F
#define TAG_ADDR_SHIFT 6
 
//
// This is PDO device-extension.
//
typedef struct _PDO_DEVICE_DATA
{
    PFDO_CONTEXT FdoContext;
 
    CODEC_IDS CodecIds;
 
    CODEC_UNSOLICITED_CALLBACK unsolitCallbacks[MAX_UNSOLICIT_CALLBACKS];
 
} PDO_DEVICE_DATA, * PPDO_DEVICE_DATA;
 
WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(PDO_DEVICE_DATA, PdoGetData)
 
extern "C" {
 
    NTSTATUS NTAPI
        Bus_EvtChildListIdentificationDescriptionDuplicate(
            WDFCHILDLIST DeviceList,
            PWDF_CHILD_IDENTIFICATION_DESCRIPTION_HEADER SourceIdentificationDescription,
            PWDF_CHILD_IDENTIFICATION_DESCRIPTION_HEADER DestinationIdentificationDescription
        );
 
    BOOLEAN NTAPI
        Bus_EvtChildListIdentificationDescriptionCompare(
            WDFCHILDLIST DeviceList,
            PWDF_CHILD_IDENTIFICATION_DESCRIPTION_HEADER FirstIdentificationDescription,
            PWDF_CHILD_IDENTIFICATION_DESCRIPTION_HEADER SecondIdentificationDescription
        );
 
    VOID NTAPI
        Bus_EvtChildListIdentificationDescriptionCleanup(
            _In_ WDFCHILDLIST DeviceList,
            _Inout_ PWDF_CHILD_IDENTIFICATION_DESCRIPTION_HEADER IdentificationDescription
        );
 
    NTSTATUS NTAPI
        Bus_EvtDeviceListCreatePdo(
            WDFCHILDLIST DeviceList,
            PWDF_CHILD_IDENTIFICATION_DESCRIPTION_HEADER IdentificationDescription,
            PWDFDEVICE_INIT ChildInit
        );
 
}
 
#endif