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313 lines
5.9 KiB
C
313 lines
5.9 KiB
C
![]() |
/*++
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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tape.h
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Abstract:
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These are the structures and defines that are used in the
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SCSI tape class drivers. The tape class driver is separated
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into two modules. Tape.c contains code common to all tape
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class drivers including the driver's major entry points.
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The major entry point names each begin with the prefix
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'ScsiTape.' The second module is the device specific code.
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It provides support for a set of functions. Each device
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specific function name is prefixed by 'Tape.'
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Author:
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Mike Glass
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Revision History:
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--*/
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#include "scsi.h"
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#include "class.h"
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//
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// Define the maximum inquiry data length.
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//
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#define MAXIMUM_TAPE_INQUIRY_DATA 252
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//
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// Tape device data
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//
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typedef struct _TAPE_DATA {
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ULONG Flags;
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ULONG CurrentPartition;
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PVOID DeviceSpecificExtension;
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PSCSI_INQUIRY_DATA InquiryData;
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} TAPE_DATA, *PTAPE_DATA;
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#define DEVICE_EXTENSION_SIZE sizeof(DEVICE_EXTENSION) + sizeof(TAPE_DATA)
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//
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// Define Device Configuration Page
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//
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typedef struct _MODE_DEVICE_CONFIGURATION_PAGE {
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UCHAR PageCode : 6;
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UCHAR Reserved1 : 1;
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UCHAR PS : 1;
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UCHAR PageLength;
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UCHAR ActiveFormat : 5;
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UCHAR CAFBit : 1;
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UCHAR CAPBit : 1;
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UCHAR Reserved2 : 1;
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UCHAR ActivePartition;
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UCHAR WriteBufferFullRatio;
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UCHAR ReadBufferEmptyRatio;
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UCHAR WriteDelayTime[2];
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UCHAR REW : 1;
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UCHAR RBO : 1;
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UCHAR SOCF : 2;
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UCHAR AVC : 1;
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UCHAR RSmk : 1;
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UCHAR BIS : 1;
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UCHAR DBR : 1;
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UCHAR GapSize;
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UCHAR Reserved3 : 3;
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UCHAR SEW : 1;
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UCHAR EEG : 1;
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UCHAR EODdefined : 3;
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UCHAR BufferSize[3];
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UCHAR DCAlgorithm;
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UCHAR Reserved4;
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} MODE_DEVICE_CONFIGURATION_PAGE, *PMODE_DEVICE_CONFIGURATION_PAGE;
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//
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// Define Medium Partition Page
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//
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typedef struct _MODE_MEDIUM_PARTITION_PAGE {
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UCHAR PageCode : 6;
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UCHAR Reserved1 : 1;
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UCHAR PSBit : 1;
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UCHAR PageLength;
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UCHAR MaximumAdditionalPartitions;
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UCHAR AdditionalPartitionDefined;
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UCHAR Reserved2 : 3;
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UCHAR PSUMBit : 2;
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UCHAR IDPBit : 1;
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UCHAR SDPBit : 1;
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UCHAR FDPBit : 1;
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UCHAR MediumFormatRecognition;
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UCHAR Reserved3[2];
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UCHAR Partition0Size[2];
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UCHAR Partition1Size[2];
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} MODE_MEDIUM_PARTITION_PAGE, *PMODE_MEDIUM_PARTITION_PAGE;
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//
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// Define Data Compression Page
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//
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typedef struct _MODE_DATA_COMPRESSION_PAGE {
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UCHAR PageCode : 6;
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UCHAR Reserved1 : 2;
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UCHAR PageLength;
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UCHAR Reserved2 : 6;
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UCHAR DCC : 1;
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UCHAR DCE : 1;
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UCHAR Reserved3 : 5;
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UCHAR RED : 2;
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UCHAR DDE : 1;
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UCHAR CompressionAlgorithm[4];
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UCHAR DecompressionAlgorithm[4];
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UCHAR Reserved4[4];
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} MODE_DATA_COMPRESSION_PAGE, *PMODE_DATA_COMPRESSION_PAGE;
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//
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// Mode parameter list header and medium partition page -
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// used in creating partitions
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//
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typedef struct _MODE_MEDIUM_PART_PAGE {
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MODE_PARAMETER_HEADER ParameterListHeader;
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MODE_MEDIUM_PARTITION_PAGE MediumPartPage;
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} MODE_MEDIUM_PART_PAGE, *PMODE_MEDIUM_PART_PAGE;
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//
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// Mode parameters for retrieving tape or media information
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//
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typedef struct _MODE_TAPE_MEDIA_INFORMATION {
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MODE_PARAMETER_HEADER ParameterListHeader;
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MODE_PARAMETER_BLOCK ParameterListBlock;
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MODE_MEDIUM_PARTITION_PAGE MediumPartPage;
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} MODE_TAPE_MEDIA_INFORMATION, *PMODE_TAPE_MEDIA_INFORMATION;
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//
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// Mode parameter list header and device configuration page -
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// used in retrieving device configuration information
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//
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typedef struct _MODE_DEVICE_CONFIG_PAGE {
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MODE_PARAMETER_HEADER ParameterListHeader;
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MODE_DEVICE_CONFIGURATION_PAGE DeviceConfigPage;
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} MODE_DEVICE_CONFIG_PAGE, *PMODE_DEVICE_CONFIG_PAGE;
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//
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// Mode parameter list header and data compression page -
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// used in retrieving data compression information
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//
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typedef struct _MODE_DATA_COMPRESS_PAGE {
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MODE_PARAMETER_HEADER ParameterListHeader;
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MODE_DATA_COMPRESSION_PAGE DataCompressPage;
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} MODE_DATA_COMPRESS_PAGE, *PMODE_DATA_COMPRESS_PAGE;
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//
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// The following routines are the exported entry points for
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// all tape class drivers. Note all these routines name start
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// with 'ScsiTape.'
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//
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NTSTATUS
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DriverEntry(
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IN PDRIVER_OBJECT DriverObject,
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IN PUNICODE_STRING RegistryPath
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);
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NTSTATUS
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ScsiTapeInitialize(
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IN PDRIVER_OBJECT DriverObject
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);
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NTSTATUS
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ScsiTapeCreate (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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ScsiTapeReadWrite (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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ScsiTapeDeviceControl(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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//
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// The following routines are provided by the tape
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// device-specific module. Each routine name is
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// prefixed with 'Tape.'
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NTSTATUS
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TapeCreatePartition(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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TapeErase(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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VOID
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TapeError(
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PDEVICE_OBJECT DeviceObject,
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PSCSI_REQUEST_BLOCK Srb,
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NTSTATUS *Status,
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BOOLEAN *Retry
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);
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NTSTATUS
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TapeGetDriveParameters(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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TapeGetMediaParameters(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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TapeGetPosition(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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TapeGetStatus(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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TapePrepare(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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TapeReadWrite(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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TapeSetDriveParameters(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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TapeSetMediaParameters(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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NTSTATUS
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TapeSetPosition(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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BOOLEAN
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TapeVerifyInquiry(
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IN PSCSI_INQUIRY_DATA LunInfo
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);
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NTSTATUS
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TapeWriteMarks(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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);
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