Leaked source code of windows server 2003
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/*++
Copyright (c) 1991 Microsoft Corporation
Module Name:
class.h
Abstract:
These are the structures and defines that are used in the
SCSI class drivers.
Author:
Mike Glass (mglass)
Jeff Havens (jhavens)
Revision History:
--*/
#ifndef _CLASS_
#include <ntdddisk.h>
#include <ntddcdrm.h>
#include <ntddtape.h>
#include <ntddchgr.h>
#include <ntddstor.h>
#include "ntddscsi.h"
#include <stdio.h>
// begin_ntminitape
#if DBG
#define DebugPrint(x) ScsiDebugPrint x
#else
#define DebugPrint(x)
#endif // DBG
// end_ntminitape
#ifdef POOL_TAGGING
#undef ExAllocatePool
#undef ExAllocatePoolWithQuota
#define ExAllocatePool(a,b) ExAllocatePoolWithTag(a,b,'HscS')
#define ExAllocatePoolWithQuota(a,b) ExAllocatePoolWithQuotaTag(a,b,'HscS')
#endif
#define MAXIMUM_RETRIES 4
typedef
VOID
(*PCLASS_ERROR) (
IN PDEVICE_OBJECT DeviceObject,
IN PSCSI_REQUEST_BLOCK Srb,
IN OUT NTSTATUS *Status,
IN OUT BOOLEAN *Retry
);
typedef struct _DEVICE_EXTENSION {
//
// Back pointer to device object
//
PDEVICE_OBJECT DeviceObject;
//
// Pointer to port device object
//
PDEVICE_OBJECT PortDeviceObject;
//
// Length of partition in bytes
//
LARGE_INTEGER PartitionLength;
//
// Number of bytes before start of partition
//
LARGE_INTEGER StartingOffset;
//
// Bytes to skew all requests, since DM Driver has been placed on an IDE drive.
//
ULONG DMByteSkew;
//
// Sectors to skew all requests.
//
ULONG DMSkew;
//
// Flag to indicate whether DM driver has been located on an IDE drive.
//
BOOLEAN DMActive;
//
// Pointer to the specific class error routine.
//
PCLASS_ERROR ClassError;
//
// SCSI port driver capabilities
//
PIO_SCSI_CAPABILITIES PortCapabilities;
//
// Buffer for drive parameters returned in IO device control.
//
PDISK_GEOMETRY DiskGeometry;
//
// Back pointer to device object of physical device
//
PDEVICE_OBJECT PhysicalDevice;
//
// Request Sense Buffer
//
PSENSE_DATA SenseData;
//
// Request timeout in seconds;
//
ULONG TimeOutValue;
//
// System device number
//
ULONG DeviceNumber;
//
// Add default Srb Flags.
//
ULONG SrbFlags;
//
// Total number of SCSI protocol errors on the device.
//
ULONG ErrorCount;
//
// Spinlock for split requests
//
KSPIN_LOCK SplitRequestSpinLock;
//
// Zone header and spin lock for zoned SRB requests.
//
PZONE_HEADER SrbZone;
PKSPIN_LOCK SrbZoneSpinLock;
//
// Lock count for removable media.
//
LONG LockCount;
//
// Scsi port number
//
UCHAR PortNumber;
//
// SCSI path id
//
UCHAR PathId;
//
// SCSI bus target id
//
UCHAR TargetId;
//
// SCSI bus logical unit number
//
UCHAR Lun;
//
// Log2 of sector size
//
UCHAR SectorShift;
//
// Flag to indicate that the device has write caching enabled.
//
BOOLEAN WriteCache;
//
// Build SCSI 1 or SCSI 2 CDBs
//
BOOLEAN UseScsi1;
} DEVICE_EXTENSION, *PDEVICE_EXTENSION;
//
// Define context structure for asynchronous completions.
//
typedef struct _COMPLETION_CONTEXT {
PDEVICE_OBJECT DeviceObject;
SCSI_REQUEST_BLOCK Srb;
}COMPLETION_CONTEXT, *PCOMPLETION_CONTEXT;
NTSTATUS
ScsiClassGetCapabilities(
IN PDEVICE_OBJECT PortDeviceObject,
OUT PIO_SCSI_CAPABILITIES *PortCapabilities
);
NTSTATUS
ScsiClassGetInquiryData(
IN PDEVICE_OBJECT PortDeviceObject,
IN PSCSI_ADAPTER_BUS_INFO *ConfigInfo
);
NTSTATUS
ScsiClassReadDriveCapacity(
IN PDEVICE_OBJECT DeviceObject
);
VOID
ScsiClassReleaseQueue(
IN PDEVICE_OBJECT DeviceObject
);
NTSTATUS
ScsiClassRemoveDevice(
IN PDEVICE_OBJECT PortDeviceObject,
IN UCHAR PathId,
IN UCHAR TargetId,
IN UCHAR Lun
);
NTSTATUS
ScsiClassAsynchronousCompletion(
PDEVICE_OBJECT DeviceObject,
PIRP Irp,
PVOID Context
);
VOID
ScsiClassSplitRequest(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN ULONG MaximumBytes
);
NTSTATUS
ScsiClassDeviceControl(
PDEVICE_OBJECT DeviceObject,
PIRP Irp
);
NTSTATUS
ScsiClassIoComplete(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN PVOID Context
);
NTSTATUS
ScsiClassIoCompleteAssociated(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN PVOID Context
);
BOOLEAN
ScsiClassInterpretSenseInfo(
IN PDEVICE_OBJECT DeviceObject,
IN PSCSI_REQUEST_BLOCK Srb,
IN UCHAR MajorFunctionCode,
IN ULONG IoDeviceCode,
IN ULONG RetryCount,
OUT NTSTATUS *Status
);
NTSTATUS
ScsiClassSendSrbSynchronous(
PDEVICE_OBJECT DeviceObject,
PSCSI_REQUEST_BLOCK Srb,
PVOID BufferAddress,
ULONG BufferLength,
BOOLEAN WriteToDevice
);
NTSTATUS
ScsiClassSendSrbAsynchronous(
PDEVICE_OBJECT DeviceObject,
PSCSI_REQUEST_BLOCK Srb,
PIRP Irp,
PVOID BufferAddress,
ULONG BufferLength,
BOOLEAN WriteToDevice
);
VOID
ScsiClassBuildRequest(
PDEVICE_OBJECT DeviceObject,
PIRP Irp
);
ULONG
ScsiClassModeSense(
IN PDEVICE_OBJECT DeviceObject,
IN PCHAR ModeSenseBuffer,
IN ULONG Length,
IN UCHAR PageMode
);
BOOLEAN
ScsiClassModeSelect(
IN PDEVICE_OBJECT DeviceObject,
IN PCHAR ModeSelectBuffer,
IN ULONG Length,
IN BOOLEAN SavePage
);
PVOID
ScsiClassFindModePage(
IN PCHAR ModeSenseBuffer,
IN ULONG Length,
IN UCHAR PageMode
);
NTSTATUS
ScsiClassClaimDevice(
IN PDEVICE_OBJECT PortDeviceObject,
IN PSCSI_INQUIRY_DATA LunInfo,
IN BOOLEAN Release,
OUT PDEVICE_OBJECT *NewPortDeviceObject OPTIONAL
);
NTSTATUS
ScsiClassInternalIoControl (
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
);
#endif /* _CLASS_ */