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00001 /*
00002  * mcd.h
00003  *
00004  * Media changer driver interface
00005  *
00006  * This file is part of the w32api package.
00007  *
00008  * Contributors:
00009  *   Created by Casper S. Hornstrup <chorns@users.sourceforge.net>
00010  *
00011  * THIS SOFTWARE IS NOT COPYRIGHTED
00012  *
00013  * This source code is offered for use in the public domain. You may
00014  * use, modify or distribute it freely.
00015  *
00016  * This code is distributed in the hope that it will be useful but
00017  * WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
00018  * DISCLAIMED. This includes but is not limited to warranties of
00019  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00020  *
00021  */
00022 
00023 #ifndef __MCD_H
00024 #define __MCD_H
00025 
00026 #include "srb.h"
00027 #include "scsi.h"
00028 #include "ntddchgr.h"
00029 
00030 #ifdef __cplusplus
00031 extern "C" {
00032 #endif
00033 
00034 #if defined(_MCD_)
00035 #define CHANGERAPI
00036 #else
00037 #define CHANGERAPI DECLSPEC_IMPORT
00038 #endif
00039 
00040 #ifdef DebugPrint
00041 #undef DebugPrint
00042 #endif
00043 
00044 #if DBG
00045 #define DebugPrint(x) ChangerClassDebugPrint x
00046 #else
00047 #define DebugPrint(x)
00048 #endif
00049 
00050 #define MAXIMUM_CHANGER_INQUIRY_DATA   252
00051 
00052 CHANGERAPI
00053 PVOID
00054 NTAPI
00055 ChangerClassAllocatePool(
00056   IN POOL_TYPE PoolType,
00057   IN ULONG NumberOfBytes);
00058 
00059 VOID
00060 ChangerClassDebugPrint(
00061   ULONG DebugPrintLevel,
00062   PCCHAR DebugMessage,
00063   ...);
00064 
00065 CHANGERAPI
00066 PVOID
00067 NTAPI
00068 ChangerClassFreePool(
00069   IN PVOID PoolToFree);
00070 
00071 CHANGERAPI
00072 NTSTATUS
00073 NTAPI
00074 ChangerClassSendSrbSynchronous(
00075   IN PDEVICE_OBJECT DeviceObject,
00076   IN PSCSI_REQUEST_BLOCK Srb,
00077   IN PVOID Buffer,
00078   IN ULONG BufferSize,
00079   IN BOOLEAN WriteToDevice);
00080 
00081 
00082 typedef NTSTATUS NTAPI
00083 (*CHANGER_INITIALIZE)(
00084   IN PDEVICE_OBJECT DeviceObject);
00085 
00086 typedef ULONG NTAPI
00087 (*CHANGER_EXTENSION_SIZE)(
00088   VOID);
00089 
00090 typedef VOID NTAPI
00091 (*CHANGER_ERROR_ROUTINE)(
00092   PDEVICE_OBJECT DeviceObject,
00093   PSCSI_REQUEST_BLOCK Srb,
00094   NTSTATUS *Status,
00095   BOOLEAN *Retry);
00096 
00097 typedef NTSTATUS NTAPI
00098 (*CHANGER_COMMAND_ROUTINE)(
00099   IN PDEVICE_OBJECT DeviceObject,
00100   IN PIRP Irp);
00101 
00102 typedef NTSTATUS NTAPI
00103 (*CHANGER_PERFORM_DIAGNOSTICS)(
00104   IN PDEVICE_OBJECT DeviceObject,
00105   OUT PWMI_CHANGER_PROBLEM_DEVICE_ERROR ChangerDeviceError);
00106 
00107 typedef struct _MCD_INIT_DATA {
00108   ULONG InitDataSize;
00109   CHANGER_EXTENSION_SIZE ChangerAdditionalExtensionSize;
00110   CHANGER_INITIALIZE ChangerInitialize;
00111   CHANGER_ERROR_ROUTINE ChangerError;
00112   CHANGER_PERFORM_DIAGNOSTICS ChangerPerformDiagnostics;
00113   CHANGER_COMMAND_ROUTINE ChangerGetParameters;
00114   CHANGER_COMMAND_ROUTINE ChangerGetStatus;
00115   CHANGER_COMMAND_ROUTINE ChangerGetProductData;
00116   CHANGER_COMMAND_ROUTINE ChangerSetAccess;
00117   CHANGER_COMMAND_ROUTINE ChangerGetElementStatus;
00118   CHANGER_COMMAND_ROUTINE ChangerInitializeElementStatus;
00119   CHANGER_COMMAND_ROUTINE ChangerSetPosition;
00120   CHANGER_COMMAND_ROUTINE ChangerExchangeMedium;
00121   CHANGER_COMMAND_ROUTINE ChangerMoveMedium;
00122   CHANGER_COMMAND_ROUTINE ChangerReinitializeUnit;
00123   CHANGER_COMMAND_ROUTINE ChangerQueryVolumeTags;
00124 } MCD_INIT_DATA, *PMCD_INIT_DATA;
00125 
00126 CHANGERAPI
00127 NTSTATUS
00128 NTAPI
00129 ChangerClassInitialize(
00130   IN PDRIVER_OBJECT DriverObject,
00131   IN PUNICODE_STRING RegistryPath,
00132   IN PMCD_INIT_DATA MCDInitData);
00133 
00134 #ifdef __cplusplus
00135 }
00136 #endif
00137 
00138 #endif /* __MCD_H */
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