Difference between revisions of "Unit SCSI"

Latest revision as of 03:36, 15 December 2022

`SCSI_MESSAGE_COMPLETE = $00;`
`SCSI_MESSAGE_EXTENDED = $01;`
`SCSI_MESSAGE_SAVE_DP = $02;`
`SCSI_MESSAGE_RESTORE_DP = $03;`
`SCSI_MESSAGE_DISCONNECT = $04;`
`SCSI_MESSAGE_ID_ERROR = $05;`
`SCSI_MESSAGE_ABORT = $06;`
`SCSI_MESSAGE_REJECT = $07;`
`SCSI_MESSAGE_NOOP = $08;`
`SCSI_MESSAGE_PARITY = $09;`
`SCSI_MESSAGE_LCOMPLETE = $0a;`
`SCSI_MESSAGE_FCOMPLETE = $0b;`
`SCSI_MESSAGE_RESET = $0c;`
`SCSI_MESSAGE_ABORT_TAG = $0d;`
`SCSI_MESSAGE_CLEAR_QUEUE = $0e;`
`SCSI_MESSAGE_INIT_REC = $0f;`
`SCSI_MESSAGE_REL_REC = $10;`
`SCSI_MESSAGE_TERMINATE = $11;`
`SCSI_MESSAGE_SIMPLE_TAG = $20;`
`SCSI_MESSAGE_HEAD_TAG = $21;`
`SCSI_MESSAGE_ORDERED_TAG = $22;`
`SCSI_MESSAGE_IGN_RESIDUE = $23;`
`SCSI_MESSAGE_IDENTIFY = $80;`

`SCSI_MESSAGE_X_MODIFY_DP = $00;`
`SCSI_MESSAGE_X_SYNC_REQ = $01;`
`SCSI_MESSAGE_X_WIDE_REQ = $03;`
`SCSI_MESSAGE_X_PPR_REQ = $04;`

SCSI protocol status SCSI_STATUS_*

`SCSI_STATUS_GOOD = $00;`
`SCSI_STATUS_CHECK_COND = $02;`
`SCSI_STATUS_COND_MET = $04;`
`SCSI_STATUS_BUSY = $08;`
`SCSI_STATUS_INT = $10;`
`SCSI_STATUS_INT_COND_MET = $14;`
`SCSI_STATUS_CONFLICT = $18;`
`SCSI_STATUS_TERMINATED = $20;`
`SCSI_STATUS_QUEUE_FULL = $28;`
`SCSI_STATUS_ILLEGAL = $ff;`
`SCSI_STATUS_SENSE = $80;`

SCSI protocol sense key SCSI_SENSE_*

`SCSI_SENSE_NO_SENSE = $00;`
`SCSI_SENSE_RECOVERED_ERROR = $01;`
`SCSI_SENSE_NOT_READY = $02;`
`SCSI_SENSE_MEDIUM_ERROR = $03;`
`SCSI_SENSE_HARDWARE_ERROR = $04;`
`SCSI_SENSE_ILLEGAL_REQUEST = $05;`
`SCSI_SENSE_UNIT_ATTENTION = $06;`
`SCSI_SENSE_DATA_PROTECT = $07;`
`SCSI_SENSE_BLANK_CHECK = $08;`
`SCSI_SENSE_VENDOR_SPECIFIC = $09;`
`SCSI_SENSE_COPY_ABORTED = $0A;`
`SCSI_SENSE_ABORTED_COMMAND = $0B;`
`SCSI_SENSE_VOLUME_OVERFLOW = $0D;`
`SCSI_SENSE_MISCOMPARE = $0E;`

SCSI protocol additional sense code SCSI_ASC_*

`SCSI_ASC_NO_SENSE = $00;`	NO SENSE
`SCSI_ASC_RECOVERED_RETRIES = $17;`	RECOVERED DATA WITH RETRIES
`SCSI_ASC_RECOVERED_ECC = $18;`	RECOVERED DATA WITH ECC
`SCSI_ASC_NOT_READY_LUN = $04;`	LOGICAL UNIT NOT READY
`SCSI_ASC_NOT_READY_NO_REF_POS = $06;`	NO REFERENCE POSITION FOUND
`SCSI_ASC_NOT_READY_LUN_COMM = $08;`	LOGICAL UNIT COMMUNICATION
`SCSI_ASC_NOT_READY_MEDIUM_NOT_PRESENT = $3A;`	MEDIUM NOT PRESENT

SCSI protocol additional sense code qualifier SCSI_ASCQ_*

`SCSI_ASCQ_NO_SENSE = $00;`	NO SENSE
`SCSI_ASCQ_RECOVERED_RETRIES = $01;`	RECOVERED DATA WITH RETRIES
`SCSI_ASCQ_RECOVERED_ECC = $00;`	RECOVERED DATA WITH ECC
`SCSI_ASCQ_NOT_READY_LUN_BECOME_READY = $01;`	LOGICAL DRIVE NOT READY - BECOMING READY
`SCSI_ASCQ_NOT_READY_LUN_INIT_REQUIRED = $02;`	LOGICAL DRIVE NOT READY - INITIALIZATION REQUIRED
`SCSI_ASCQ_NOT_READY_LUN_FORMAT_PROGRESS = $04;`	LOGICAL UNIT NOT READY - FORMAT IN PROGRESS
`SCSI_ASCQ_NOT_READY_LUN_DEVICE_BUSY = $FF;`	LOGICAL DRIVE NOT READY - DEVICE IS BUSY
`SCSI_ASCQ_NOT_READY_LUN_COMM_FAILURE = $00;`	LOGICAL UNIT COMMUNICATION FAILURE
`SCSI_ASCQ_NOT_READY_LUN_COMM_TIMEOUT = $01;`	LOGICAL UNIT COMMUNICATION TIME-OUT
`SCSI_ASCQ_NOT_READY_LUN_COMM_OVERRUN = $80;`	LOGICAL UNIT COMMUNICATION OVERRUN

SCSI protocol command SCSI_COMMAND_*

`SCSI_COMMAND_CHANGE_DEF = $40;`	Change Definition (Optional)
`SCSI_COMMAND_COMPARE = $39;`	Compare (Optional)
`SCSI_COMMAND_COPY = $18;`	Copy (Optional)
`SCSI_COMMAND_COP_VERIFY = $3A;`	Copy and Verify (Optional)
`SCSI_COMMAND_INQUIRY = $12;`	Inquiry (MANDATORY)
`SCSI_COMMAND_LOG_SELECT = $4C;`	Log Select (Optional)
`SCSI_COMMAND_LOG_SENSE = $4D;`	Log Sense (Optional)
`SCSI_COMMAND_MODE_SEL6 = $15;`	Mode Select 6-byte (Device Specific)
`SCSI_COMMAND_MODE_SEL10 = $55;`	Mode Select 10-byte (Device Specific)
`SCSI_COMMAND_MODE_SEN6 = $1A;`	Mode Sense 6-byte (Device Specific)
`SCSI_COMMAND_MODE_SEN10 = $5A;`	Mode Sense 10-byte (Device Specific)
`SCSI_COMMAND_READ_BUFF = $3C;`	Read Buffer (Optional)
`SCSI_COMMAND_REQ_SENSE = $03;`	Request Sense (MANDATORY)
`SCSI_COMMAND_SEND_DIAG = $1D;`	Send Diagnostic (Optional)
`SCSI_COMMAND_TST_U_RDY = $00;`	Test Unit Ready (MANDATORY)
`SCSI_COMMAND_WRITE_BUFF = $3B;`	Write Buffer (Optional)

Commands Unique to Direct Access Devices
`SCSI_COMMAND_COMPARE = $39;`	Compare (Optional)
`SCSI_COMMAND_FORMAT = $04;`	Format Unit (MANDATORY)
`SCSI_COMMAND_LCK_UN_CAC = $36;`	Lock Unlock Cache (Optional)
`SCSI_COMMAND_PREFETCH = $34;`	Prefetch (Optional)
`SCSI_COMMAND_MED_REMOVL = $1E;`	Prevent/Allow medium Removal (Optional)
`SCSI_COMMAND_READ6 = $08;`	Read 6-byte (MANDATORY)
`SCSI_COMMAND_READ10 = $28;`	Read 10-byte (MANDATORY)
`SCSI_COMMAND_READ12 = $A8;`	Read 12-byte (Optional)
`SCSI_COMMAND_READ16 = $88;`	Read 16-byte (Optional)
`SCSI_COMMAND_RD_CAPAC = $25;`	Read Capacity (MANDATORY)
`SCSI_COMMAND_RD_CAPAC10 = SCSI_COMMAND_RD_CAPAC;`	Read Capacity (10)
`SCSI_COMMAND_RD_DEFECT = $37;`	Read Defect Data (Optional)
`SCSI_COMMAND_READ_LONG = $3E;`	Read Long (Optional)
`SCSI_COMMAND_REASS_BLK = $07;`	Reassign Blocks (Optional)
`SCSI_COMMAND_RCV_DIAG = $1C;`	Receive Diagnostic Results (Optional)
`SCSI_COMMAND_RELEASE = $17;`	Release Unit (MANDATORY)
`SCSI_COMMAND_REZERO = $01;`	Rezero Unit (Optional)
`SCSI_COMMAND_SRCH_DAT_E = $31;`	Search Data Equal (Optional)
`SCSI_COMMAND_SRCH_DAT_H = $30;`	Search Data High (Optional)
`SCSI_COMMAND_SRCH_DAT_L = $32;`	Search Data Low (Optional)
`SCSI_COMMAND_SEEK6 = $0B;`	Seek 6-Byte (Optional)
`SCSI_COMMAND_SEEK10 = $2B;`	Seek 10-Byte (Optional)
`SCSI_COMMAND_SEND_DIAG = $1D;`	Send Diagnostics (MANDATORY)
`SCSI_COMMAND_SET_LIMIT = $33;`	Set Limits (Optional)
`SCSI_COMMAND_START_STP = $1B;`	Start/Stop Unit (Optional)
`SCSI_COMMAND_SYNC_CACHE = $35;`	Synchronize Cache (Optional)
`SCSI_COMMAND_VERIFY = $2F;`	Verify (Optional)
`SCSI_COMMAND_WRITE6 = $0A;`	Write 6-Byte (MANDATORY)
`SCSI_COMMAND_WRITE10 = $2A;`	Write 10-Byte (MANDATORY)
`SCSI_COMMAND_WRITE12 = $AA;`	Write 12-Byte (Optional)
`SCSI_COMMAND_WRITE16 = $8A;`	Write 16-Byte (Optional)
`SCSI_COMMAND_WRT_VERIFY = $2E;`	Write and Verify (Optional)
`SCSI_COMMAND_WRITE_LONG = $3F;`	Write Long (Optional)
`SCSI_COMMAND_WRITE_SAME = $41;`	Write Same (Optional)
`SCSI_COMMAND_RD_FMT_CAP = $23;`	Read Format Capacities
`SCSI_COMMAND_SVC_ACT_IN = $9E;`	Service Action In

SCSI command data SCSI_COMMAND_MAX_*

`SCSI_COMMAND_MAX_SIZE = 16;`

SCSI service action SCSI_SAI_*

`SCSI_SAI_READ_CAPACITY_16 = $10;`	Read Capacity (16)
`SCSI_SAI_GET_LBA_STATUS = $12;`	Get LBA Status

SCSI inquiry data SCSI_INQUIRY_*

`SCSI_INQUIRY_STANDARD = $00;`

SCSI standard inquiry data SCSI_STANDARD_INQUIRY_*

`SCSI_STANDARD_INQUIRY_SIZE = 36;`

SCSI inquiry peripheral device type SCSI_DEVICE_TYPE_*

`SCSI_DEVICE_TYPE_DISK = $00;`	SBC-3 - Direct access block device (e.g., magnetic disk)
`SCSI_DEVICE_TYPE_TAPE = $01;`	SSC-3 - Sequential-access device (e.g., magnetic tape)
`SCSI_DEVICE_TYPE_PRINTER = $02;`	SSC - Printer device
`SCSI_DEVICE_TYPE_PROCESSOR = $03;`	SPC-2 - Processor device
`SCSI_DEVICE_TYPE_WRITE_ONCE = $04;`	SBC - Write-once device (e.g., some optical disks)
`SCSI_DEVICE_TYPE_CD_DVD = $05;`	MMC-5 - CD/DVD device
`SCSI_DEVICE_TYPE_SCANNER = $06;`	Scanner device (obsolete)
`SCSI_DEVICE_TYPE_OPTICAL = $07;`	SBC - Optical memory device (e.g., some optical disks)
`SCSI_DEVICE_TYPE_CHANGER = $08;`	SMC-3 - Medium changer device (e.g., jukeboxes)
`SCSI_DEVICE_TYPE_COMMS = $09;`	Communications device (obsolete)
`SCSI_DEVICE_TYPE_ARRAY = $0C;`	SCC-2 - Storage array controller device (e.g., RAID)
`SCSI_DEVICE_TYPE_ENCLOSURE = $0D;`	SES - Enclosure services device
`SCSI_DEVICE_TYPE_RBC = $0E;`	RBC - Simplified direct-access device (e.g., magnetic disk)
`SCSI_DEVICE_TYPE_CARD = $0F;`	OCRW - Optical card reader/writer device
`SCSI_DEVICE_TYPE_BRIDGE = $10;`	BCC - Bridge Controller Commands
`SCSI_DEVICE_TYPE_OBJECT = $11;`	OSD - Object-based Storage Device
`SCSI_DEVICE_TYPE_AUTOMATION = $12;`	ADC-2 - Automation/Drive Interface
`SCSI_DEVICE_TYPE_WELL_KNOWN = $1E;`	Well known logical unit
`SCSI_DEVICE_TYPE_UNKNOWN = $1F;`	Unknown or no device type

SCSI inquiry removable media bit SCSI_REMOVABLE_MEDIA_*

`SCSI_REMOVABLE_MEDIA_BIT = $80;`

SCSI request sense data SCSI_REQUEST_SENSE_*

`SCSI_REQUEST_SENSE_SIZE = 18;`

SCSI read capacity data SCSI_READ_CAPACITY_*

`SCSI_READ_CAPACITY_SIZE = 8;`
`SCSI_READ_CAPACITY_16_SIZE = 32;`

SCSI read 10 data SCSI_READ_10_*

`SCSI_READ_10_MAX_BLOCKS = $FFFF;`

SCSI write 10 data SCSI_WRITE_10_*

`SCSI_WRITE_10_MAX_BLOCKS = $FFFF;`

SCSI logging SCSI_LOG_*

`SCSI_LOG_LEVEL_DEBUG = LOG_LEVEL_DEBUG;`	SCSI debugging messages
`SCSI_LOG_LEVEL_INFO = LOG_LEVEL_INFO;`	SCSI informational messages, such as a device being attached or detached
`SCSI_LOG_LEVEL_ERROR = LOG_LEVEL_ERROR;`	SCSI error messages
`SCSI_LOG_LEVEL_WARN = LOG_LEVEL_WARN;`	SCSI warning messages
`SCSI_LOG_LEVEL_NONE = LOG_LEVEL_NONE;`	No SCSI messages

Type definitions

SCSI host enumeration callback

`TSCSIHostEnumerate = function(Host:PSCSIHost; Data:Pointer):LongWord;`

SCSI host

PSCSIHost = ^TSCSIHost;

TSCSIHost = record

Device Properties
`Device:TDevice;`	The Device entry for this Host
Host Properties
`HostId:LongWord;`	Unique Id of this Host in the Host table
`HostState:LongWord;`	Host state (eg ?????)
Statistics Properties

Driver Properties
`Lock:TMutexHandle;`	Host lock
Internal Properties
`Prev:PSCSIHost;`	Previous entry in Host table
`Next:PSCSIHost;`	Next entry in Host table

SCSI enumeration callback

`TSCSIEnumerate = function(SCSI:PSCSIDevice; Data:Pointer):LongWord;`

SCSI notification callback

`TSCSINotification = function(Device:PDevice; Data:Pointer; Notification:LongWord):LongWord;`

SCSI device

PSCSIDevice = ^TSCSIDevice;

TSCSIDevice = record

Device Properties
`Device:TDevice;`	The Device entry for this SCSI
SCSI Properties
`SCSIId:LongWord;`	Unique Id of this SCSI in the SCSI table
`SCSIState:LongWord;`	SCSI state (eg SCSI_STATE_INSERTED)
Statistics Properties

Driver Properties
`Lock:TMutexHandle;`	Device lock
`Vendor:PChar;`	SCSI Vendor
`Product:PChar;`	SCSI Product
`Revision:PChar;`	Firmware Revision
Internal Properties
`Prev:PSCSIDevice;`	Previous entry in SCSI table
`Next:PSCSIDevice;`	Next entry in SCSI table

SCSI command block

PSCSICommandBlock = ^TSCSICommandBlock;

TSCSICommandBlock = record

`Command:array[0..SCSI_COMMAND_MAX_SIZE - 1] of Byte;`	Command
`SenseData:array[0..63] of Byte;`	Request Sense
`Status:Byte;`	SCSI Status
`TargetID:Byte;`	Target ID
`TargetLUN:Byte;`	Target LUN
`CommandLength:Byte;`	Command Length
`DataLength:LongWord;`	Total Data Length
`Data:Pointer;`	Pointer to Data
`MessageOut:array[0..11] of Byte;`	Message out buffer
`MessageIn:array[0..11] of Byte;`	Message in buffer
`SenseCommandLength:Byte;`	Sense Command Length
`SenseDataLength:LongWord;`	Sense Data Length
`SenseCommand:array[0..5] of Byte;`	Sense Command
`ControllerStatus:LongWord;`	Controller Status
`TransferredBytes:LongWord;`	Transferred Bytes

SCSI standard inquiry data

PSCSIStandardInquiryData = ^TSCSIStandardInquiryData;

TSCSIStandardInquiryData = packed record

`DeviceType:Byte;`	Peripheral Device Type (Bits 4..0)
`RemovableMediaBit:Byte;`	Removable Media Bit (Bit 7) ($80)
`Version:Byte;`	ISO/ECMA/ANSI Version (ISO Bits 7..6)(ECMA Bits 5..3)(ANSI Bits 2..0)
`ResponseFormat:Byte;`	Response Data Format (Bits 3..0)
`AdditionalLength:Byte;`	Additional Length
`Reserved1:Byte;`
`Reserved2:Word;`
`Vendor:array[0..7] of Char;`	Vendor Information
`Product:array[0..15] of Char;`	Product Identification
`Revision:array[0..3] of Char;`	Product Revision Level

SCSI request sense data

PSCSIRequestSenseData = ^TSCSIRequestSenseData;

TSCSIRequestSenseData = packed record

`ErrorCode:Byte;`	Error Code (Bits 6..0) (Bit 7 is Valid bit)
`Reserved1:Byte;`
`SenseKey:Byte;`	Sense Key (Bits 3..0)
`Information:LongWord;`	Information
`AdditionalLength:Byte;`	Additional Sense Length
`Reserved2:LongWord;`
`ASC:Byte;`	Additional Sense Code
`ASCQ:Byte;`	Additional Sense Code Qualifier
`Reserved3:LongWord;`

SCSI read capacity data

PSCSIReadCapacityData = ^TSCSIReadCapacityData;

TSCSIReadCapacityData = packed record

`LastBlock:LongWord;`	Last Logical Block Address (Big Endian)
`BlockSize:LongWord;`	Block Length In Bytes (Big Endian)

SCSI read capacity 16 data

PSCSIReadCapacity16Data = ^TSCSIReadCapacity16Data;

TSCSIReadCapacity16Data = packed record

`LastBlock:Int64;`	Last Logical Block Address (Big Endian)
`BlockSize:LongWord;`	Block Length In Bytes (Big Endian)
`Reserved1:Byte;`	P_TYPE (Bits 3..1) PROT_EN (Bit 0)
`Reserved2:Byte;`	P_I_EXPONENT (Bitss 7..4) LOGICAL BLOCKS PER PHYSICAL BLOCK EXPONENT (Bits 3..0
`Reserved3:Byte;`	TPE (Bit 7) TPRZ (Bit 6) LOWEST ALIGNED LOGICAL BLOCK ADDRESS (Bits 5..0)(Big Endian)
`Reserved4:Byte;`	LOWEST ALIGNED LOGICAL BLOCK ADDRESS (Bits 7..0)(Big Endian)
`Reserved5:array[0..15] of Byte;`

Public variables

SCSI logging

`SCSI_DEFAULT_LOG_LEVEL:LongWord = SCSI_LOG_LEVEL_DEBUG;`	Minimum level for SCSI messages. Only messages with level greater than or equal to this will be printed.

`SCSI_LOG_ENABLED:Boolean;`

Function declarations

Initialization functions

procedure SCSIInit;

Description: To be documented

Note	None documented

SCSI functions

function SCSIDeviceInquiry(SCSI:PSCSIDevice; var DeviceType,DeviceFlags:LongWord; var Vendor,Product,Revision:PChar):LongWord;

Description: To be documented

Note	None documented

function SCSIDeviceRequestSense(SCSI:PSCSIDevice; var SenseKey,ASC,ASCQ:Byte):LongWord;

Description: To be documented

Note	None documented

function SCSIDeviceReadCapacity(SCSI:PSCSIDevice; var BlockSize,BlockShift:LongWord; var BlockCount:Int64):LongWord;

Description: To be documented

Note	None documented

function SCSIDeviceTestUnitReady(SCSI:PSCSIDevice; var DeviceFlags:LongWord):LongWord;

Description: To be documented

Note	None documented

function SCSIDeviceRead10(SCSI:PSCSIDevice; Start:LongWord; Count:Word; Buffer:Pointer):LongWord;

Description: To be documented

Note	None documented

function SCSIDeviceWrite10(SCSI:PSCSIDevice; Start:LongWord; Count:Word; Buffer:Pointer):LongWord;

Description: To be documented

Note	None documented

function SCSIDeviceRead16(SCSI:PSCSIDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;

Description: To be documented

Note	None documented

function SCSIDeviceWrite16(SCSI:PSCSIDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;

Description: To be documented

Note	None documented

function SCSIDeviceTransport(SCSI:PSCSIDevice; Command:PSCSICommandBlock):LongWord;

Description: To be documented

Note	None documented

function SCSIDeviceCreate:PSCSIDevice;

Description: Create a new SCSI entry

Return	Pointer to new SCSI entry or nil if SCSI could not be created

function SCSIDeviceCreateEx(Size:LongWord):PSCSIDevice;

Description: Create a new SCSI entry

Size	Size in bytes to allocate for new SCSI (Including the SCSI entry)
Return	Pointer to new SCSI entry or nil if SCSI could not be created

function SCSIDeviceDestroy(SCSI:PSCSIDevice):LongWord;

Description: Destroy an existing SCSI entry

Note	None documented

function SCSIDeviceRegister(SCSI:PSCSIDevice):LongWord;

Description: Register a new SCSI in the SCSI table

Note	None documented

function SCSIDeviceDeregister(SCSI:PSCSIDevice):LongWord;

Description: Deregister a SCSI from the SCSI table

Note	None documented

function SCSIDeviceFind(SCSIId:LongWord):PSCSIDevice;

Description: To be documented

Note	None documented

function SCSIDeviceFindByName(const Name:String):PSCSIDevice; inline;

Description: To be documented

Note	None documented

function SCSIDeviceFindByDescription(const Description:String):PSCSIDevice; inline;

Description: To be documented

Note	None documented

function SCSIDeviceEnumerate(Callback:TSCSIEnumerate; Data:Pointer):LongWord;

Description: To be documented

Note	None documented

function SCSIDeviceNotification(SCSI:PSCSIDevice; Callback:TSCSINotification; Data:Pointer; Notification,Flags:LongWord):LongWord;

Description: To be documented

Note	None documented

function SCSIHostCreate:PSCSIHost;

Description: Create a new Host entry

Return	Pointer to new Host entry or nil if host could not be created

function SCSIHostCreateEx(Size:LongWord):PSCSIHost;

Description: Create a new Host entry

Size	Size in bytes to allocate for new host (Including the host entry)
Return	Pointer to new Host entry or nil if host could not be created

function SCSIHostDestroy(Host:PSCSIHost):LongWord;

Description: Destroy an existing Host entry

Note	None documented

function SCSIHostRegister(Host:PSCSIHost):LongWord;

Description: Register a new Host in the Host table

Note	None documented

function SCSIHostDeregister(Host:PSCSIHost):LongWord;

Description: Deregister a Host from the Host table

Note	None documented

function SCSIHostFind(HostId:LongWord):PSCSIHost;

Description: To be documented

Note	None documented

function SCSIHostEnumerate(Callback:TSCSIHostEnumerate; Data:Pointer):LongWord;

Description: To be documented

Note	None documented

SCSI helper functions

function SCSIGetCount:LongWord;

Description: Get the current SCSI count

Note	None documented

function SCSIDeviceCheck(SCSI:PSCSIDevice):PSCSIDevice;

Description: Check if the supplied SCSI is in the SCSI table

Note	None documented

procedure SCSILog(Level:LongWord; SCSI:PSCSIDevice; const AText:String);

Description: To be documented

Note	None documented

procedure SCSILogInfo(SCSI:PSCSIDevice; const AText:String); inline;

Description: To be documented

Note	None documented

procedure SCSILogWarn(SCSI:PSCSIDevice; const AText:String); inline;

Description: To be documented

Note	None documented

procedure SCSILogError(SCSI:PSCSIDevice; const AText:String); inline;

Description: To be documented

Note	None documented

procedure SCSILogDebug(SCSI:PSCSIDevice; const AText:String); inline;

Description: To be documented

Note	None documented

function SCSIDeviceTypeToStorageType(DeviceType:Byte; Removable,Floppy:Boolean):LongWord;

Description: To be documented

Note	None documented

function SCSIHostGetCount:LongWord;

Description: Get the current Host count

Note	None documented

function SCSIHostCheck(Host:PSCSIHost):PSCSIHost;

Description: Check if the supplied Host is in the host table

Note	None documented

SCSI storage functions

function SCSIStorageDeviceRead(Storage:PStorageDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;

Description: To be documented

Note	None documented

function SCSIStorageDeviceWrite(Storage:PStorageDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;

Description: To be documented

Note	None documented

function SCSIStorageDeviceControl(Storage:PStorageDevice; Request:Integer; Argument1:PtrUInt; var Argument2:PtrUInt):LongWord;

Description: To be documented

Note	None documented

Return to Unit Reference

`SCSI_NAME_PREFIX = 'SCSI';`	Name prefix for SCSI Devices
`SCSI_HOST_PREFIX = 'SCSIHost';`	Name prefix for Host Devices

Difference between revisions of "Unit SCSI"

Latest revision as of 03:36, 15 December 2022

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Type definitions

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@@ Line 4: / Line 4: @@
 === Description ===
 ----
+'''Ultibo SCSI Interface unit'''
 The SCSI interface unit is device non specific in that it implements only the SCSI protocol.
-Actual command transfer is performed by a device specific driver that implements the exact semantics of the device. eg USB Mass Storage devices use the SCSI protocol, the SCSI interface
+Actual command transfer is performed by a device specific driver that implements the exact semantics of the device. eg USB Mass Storage devices use the SCSI protocol, the SCSI interface implements the protocol behaviour but the actual command transfer is handled by the USB storage driver.
-implements the protocol behaviour but the actual command transfer is handled by the USB storage driver.
 === Constants ===
@@ Line 29: / Line 30: @@
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI device type constants''' <code> SCSI_TYPE_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI device type''' <code> SCSI_TYPE_* </code></div>
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@@ Line 43: / Line 44: @@
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI device state constants''' <code> SCSI_STATE_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI device state''' <code> SCSI_STATE_* </code></div>
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@@ Line 57: / Line 58: @@
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI device flag constants''' <code> SCSI_FLAG_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI device flag''' <code> SCSI_FLAG_* </code></div>
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@@ Line 68: / Line 69: @@
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI protocol message constants''' <code> SCSI_MESSAGE_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI protocol message''' <code> SCSI_MESSAGE_* </code></div>
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI protocol status constants''' <code> SCSI_STATUS_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI protocol status''' <code> SCSI_STATUS_* </code></div>
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI protocol sense key constants''' <code> SCSI_SENSE_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI protocol sense key''' <code> SCSI_SENSE_* </code></div>
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI protocol additional sense code constants''' <code> SCSI_ASC_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI protocol additional sense code''' <code> SCSI_ASC_* </code></div>
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI protocol additional sense code qualifier constants''' <code> SCSI_ASCQ_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI protocol additional sense code qualifier''' <code> SCSI_ASCQ_* </code></div>
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI protocol command constants''' <code> SCSI_COMMAND_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI protocol command''' <code> SCSI_COMMAND_* </code></div>
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI command data constants''' <code> SCSI_COMMAND_MAX_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI command data''' <code> SCSI_COMMAND_MAX_* </code></div>
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI service action constants''' <code> SCSI_SAI_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI service action''' <code> SCSI_SAI_* </code></div>
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI inquiry data constants''' <code> SCSI_INQUIRY_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI inquiry data''' <code> SCSI_INQUIRY_* </code></div>
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI standard inquiry data constants''' <code> SCSI_STANDARD_INQUIRY_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI standard inquiry data''' <code> SCSI_STANDARD_INQUIRY_* </code></div>
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI inquiry peripheral device type constants''' <code> SCSI_DEVICE_TYPE_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI inquiry peripheral device type''' <code> SCSI_DEVICE_TYPE_* </code></div>
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI inquiry removable media bit constants''' <code> SCSI_REMOVABLE_MEDIA_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI inquiry removable media bit''' <code> SCSI_REMOVABLE_MEDIA_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI request sense data constants''' <code> SCSI_REQUEST_SENSE_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI request sense data''' <code> SCSI_REQUEST_SENSE_* </code></div>
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI read capacity data constants''' <code> SCSI_READ_CAPACITY_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI read capacity data''' <code> SCSI_READ_CAPACITY_* </code></div>
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI read 10 data constants''' <code> SCSI_READ_10_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI read 10 data''' <code> SCSI_READ_10_* </code></div>
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@@ Line 645: / Line 646: @@
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI write 10 data constants''' <code> SCSI_WRITE_10_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI write 10 data''' <code> SCSI_WRITE_10_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 656: / Line 657: @@
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-<div style="font-size: 14px; padding-left: 12px;">'''SCSI logging constants''' <code> SCSI_LOG_* </code></div>
+<div style="font-size: 14px; padding-left: 12px;">'''SCSI logging''' <code> SCSI_LOG_* </code></div>
 <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
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@@ Line 668: / Line 669: @@
 | <code>SCSI_LOG_LEVEL_ERROR = LOG_LEVEL_ERROR;</code>
 | SCSI error messages
+|-
+| <code>SCSI_LOG_LEVEL_WARN = LOG_LEVEL_WARN;</code>
+| SCSI warning messages
 |-
 | <code>SCSI_LOG_LEVEL_NONE = LOG_LEVEL_NONE;</code>
@@ Line 679: / Line 683: @@
 ----
-''To be documented''
+'''SCSI host enumeration callback'''
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>TSCSIHostEnumerate = function(Host:PSCSIHost; Data:Pointer):LongWord;</code>
+| style="width: 40%;"|
+|-
+|}
+'''SCSI host'''
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;">
+<code>PSCSIHost = ^TSCSIHost;</code>
+<code>TSCSIHost = record</code>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+|colspan="2"|''Device Properties''
+|-
+| <code>Device:TDevice;</code>
+| The Device entry for this Host
+|-
+|colspan="2"|''Host Properties''
+|-
+| <code>HostId:LongWord;</code>
+| Unique Id of this Host in the Host table
+|-
+| <code>HostState:LongWord;</code>
+| Host state (eg ?????)
+|-
+|colspan="2"|''Statistics Properties''
+|-
+|colspan="2"|&nbsp;
+|-
+|colspan="2"|''Driver Properties''
+|-
+| <code>Lock:TMutexHandle;</code>
+| Host lock
+|-
+|colspan="2"|''Internal Properties''
+|-
+| <code>Prev:PSCSIHost;</code>
+| Previous entry in Host table
+|-
+| <code>Next:PSCSIHost;</code>
+| Next entry in Host table
+|-
+|}
+</div></div>
+'''SCSI enumeration callback'''
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>TSCSIEnumerate = function(SCSI:PSCSIDevice; Data:Pointer):LongWord;</code>
+| style="width: 40%;"|
+|-
+|}
+'''SCSI notification callback'''
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>TSCSINotification = function(Device:PDevice; Data:Pointer; Notification:LongWord):LongWord;</code>
+| style="width: 40%;"|
+|-
+|}
+'''SCSI device'''
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;">
+<code>PSCSIDevice = ^TSCSIDevice;</code>
+<code>TSCSIDevice = record</code>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+|colspan="2"|''Device Properties''
+|-
+| <code>Device:TDevice;</code>
+| The Device entry for this SCSI
+|-
+|colspan="2"|''SCSI Properties''
+|-
+| <code>SCSIId:LongWord;</code>
+| Unique Id of this SCSI in the SCSI table
+|-
+| <code>SCSIState:LongWord;</code>
+| SCSI state (eg SCSI_STATE_INSERTED)
+|-
+|colspan="2"|''Statistics Properties''
+|-
+|colspan="2"|&nbsp;
+|-
+|colspan="2"|''Driver Properties''
+|-
+| <code>Lock:TMutexHandle;</code>
+| Device lock
+|-
+| <code>Vendor:PChar;</code>
+| SCSI Vendor
+|-
+| <code>Product:PChar;</code>
+| SCSI Product
+|-
+| <code>Revision:PChar;</code>
+| Firmware Revision
+|-
+|colspan="2"|''Internal Properties''
+|-
+| <code>Prev:PSCSIDevice;</code>
+| Previous entry in SCSI table
+|-
+| <code>Next:PSCSIDevice;</code>
+| Next entry in SCSI table
+|-
+|}
+</div></div>
+'''SCSI command block'''
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;">
+<code>PSCSICommandBlock = ^TSCSICommandBlock;</code>
+<code>TSCSICommandBlock = record</code>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+| <code>Command:array[0..SCSI_COMMAND_MAX_SIZE - 1] of Byte;</code>
+| Command
+|-
+| <code>SenseData:array[0..63] of Byte;</code>
+| Request Sense
+|-
+| <code>Status:Byte;</code>
+| SCSI Status
+|-
+| <code>TargetID:Byte;</code>
+| Target ID
+|-
+| <code>TargetLUN:Byte;</code>
+| Target LUN
+|-
+| <code>CommandLength:Byte;</code>
+| Command Length
+|-
+| <code>DataLength:LongWord;</code>
+| Total Data Length
+|-
+| <code>Data:Pointer;</code>
+| Pointer to Data
+|-
+| <code>MessageOut:array[0..11] of Byte;</code>
+| Message out buffer
+|-
+| <code>MessageIn:array[0..11] of Byte;</code>
+| Message in buffer
+|-
+| <code>SenseCommandLength:Byte;</code>
+| Sense Command Length
+|-
+| <code>SenseDataLength:LongWord;</code>
+| Sense Data Length
+|-
+| <code>SenseCommand:array[0..5] of Byte;</code>
+| Sense Command
+|-
+| <code>ControllerStatus:LongWord;</code>
+| Controller Status
+|-
+| <code>TransferredBytes:LongWord;</code>
+| Transferred Bytes
+|-
+|}
+</div></div>
+'''SCSI standard inquiry data'''
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;">
+<code>PSCSIStandardInquiryData = ^TSCSIStandardInquiryData;</code>
+<code>TSCSIStandardInquiryData = packed record</code>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+| <code>DeviceType:Byte;</code>
+| Peripheral Device Type (Bits 4..0)
+|-
+| <code>RemovableMediaBit:Byte;</code>
+| Removable Media Bit (Bit 7) ($80)
+|-
+| <code>Version:Byte;</code>
+| ISO/ECMA/ANSI Version (ISO Bits 7..6)(ECMA Bits 5..3)(ANSI Bits 2..0)
+|-
+| <code>ResponseFormat:Byte;</code>
+| Response Data Format (Bits 3..0)
+|-
+| <code>AdditionalLength:Byte;</code>
+| Additional Length
+|-
+| <code>Reserved1:Byte;</code>
+| &nbsp;
+|-
+| <code>Reserved2:Word;</code>
+| &nbsp;
+|-
+| <code>Vendor:array[0..7] of Char;</code>
+| Vendor Information
+|-
+| <code>Product:array[0..15] of Char;</code>
+| Product Identification
+|-
+| <code>Revision:array[0..3] of Char;</code>
+| Product Revision Level
+|-
+|}
+</div></div>
+'''SCSI request sense data'''
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;">
+<code>PSCSIRequestSenseData = ^TSCSIRequestSenseData;</code>
+<code>TSCSIRequestSenseData = packed record</code>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+| <code>ErrorCode:Byte;</code>
+| Error Code (Bits 6..0) (Bit 7 is Valid bit)
+|-
+| <code>Reserved1:Byte;</code>
+| &nbsp;
+|-
+| <code>SenseKey:Byte;</code>
+| Sense Key (Bits 3..0)
+|-
+| <code>Information:LongWord;</code>
+| Information
+|-
+| <code>AdditionalLength:Byte;</code>
+| Additional Sense Length
+|-
+| <code>Reserved2:LongWord;</code>
+| &nbsp;
+|-
+| <code>ASC:Byte;</code>
+| Additional Sense Code
+|-
+| <code>ASCQ:Byte;</code>
+| Additional Sense Code Qualifier
+|-
+| <code>Reserved3:LongWord;</code>
+| &nbsp;
+|-
+|}
+</div></div>
+'''SCSI read capacity data'''
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;">
+<code>PSCSIReadCapacityData = ^TSCSIReadCapacityData;</code>
+<code>TSCSIReadCapacityData = packed record</code>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+| <code>LastBlock:LongWord;</code>
+| Last Logical Block Address (Big Endian)
+|-
+| <code>BlockSize:LongWord;</code>
+| Block Length In Bytes (Big Endian)
+|-
+|}
+</div></div>
+'''SCSI read capacity 16 data'''
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;">
+<code>PSCSIReadCapacity16Data = ^TSCSIReadCapacity16Data;</code>
+<code>TSCSIReadCapacity16Data = packed record</code>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+| <code>LastBlock:Int64;</code>
+| Last Logical Block Address (Big Endian)
+|-
+| <code>BlockSize:LongWord;</code>
+| Block Length In Bytes (Big Endian)
+|-
+| <code>Reserved1:Byte;</code>
+| P_TYPE (Bits 3..1) PROT_EN (Bit 0)
+|-
+| <code>Reserved2:Byte;</code>
+| P_I_EXPONENT (Bitss 7..4) LOGICAL BLOCKS PER PHYSICAL BLOCK EXPONENT (Bits 3..0
+|-
+| <code>Reserved3:Byte;</code>
+| TPE (Bit 7) TPRZ (Bit 6) LOWEST ALIGNED LOGICAL BLOCK ADDRESS (Bits 5..0)(Big Endian)
+|-
+| <code>Reserved4:Byte;</code>
+| LOWEST ALIGNED LOGICAL BLOCK ADDRESS (Bits 7..0)(Big Endian)
+|-
+| <code>Reserved5:array[0..15] of Byte;</code>
+| &nbsp;
+|-
+|}
+</div></div>
+<br />
 === Public variables ===
 ----
-''To be documented''
+'''SCSI logging'''
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>SCSI_DEFAULT_LOG_LEVEL:LongWord = SCSI_LOG_LEVEL_DEBUG;</code>
+| style="width: 40%;"|Minimum level for SCSI messages. Only messages with level greater than or equal to this will be printed.
+|-
+|}
+{| class="wikitable" style="font-size: 14px; text-align: left; width: 100%; height: 50px;"
+|-
+| <code>SCSI_LOG_ENABLED:Boolean;</code>
+| style="width: 40%;"|
+|-
+|}
+<br />
 === Function declarations ===
 ----
-''To be documented''
+'''Initialization functions'''
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure SCSIInit;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+'''SCSI functions'''
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceInquiry(SCSI:PSCSIDevice; var DeviceType,DeviceFlags:LongWord; var Vendor,Product,Revision:PChar):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceRequestSense(SCSI:PSCSIDevice; var SenseKey,ASC,ASCQ:Byte):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceReadCapacity(SCSI:PSCSIDevice; var BlockSize,BlockShift:LongWord; var BlockCount:Int64):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceTestUnitReady(SCSI:PSCSIDevice; var DeviceFlags:LongWord):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceRead10(SCSI:PSCSIDevice; Start:LongWord; Count:Word; Buffer:Pointer):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceWrite10(SCSI:PSCSIDevice; Start:LongWord; Count:Word; Buffer:Pointer):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceRead16(SCSI:PSCSIDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceWrite16(SCSI:PSCSIDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceTransport(SCSI:PSCSIDevice; Command:PSCSICommandBlock):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceCreate:PSCSIDevice;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Create a new SCSI entry</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Return
+| Pointer to new SCSI entry or nil if SCSI could not be created
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceCreateEx(Size:LongWord):PSCSIDevice;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Create a new SCSI entry</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Size
+| Size in bytes to allocate for new SCSI (Including the SCSI entry)
+|-
+! Return
+| Pointer to new SCSI entry or nil if SCSI could not be created
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceDestroy(SCSI:PSCSIDevice):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Destroy an existing SCSI entry</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceRegister(SCSI:PSCSIDevice):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Register a new SCSI in the SCSI table</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceDeregister(SCSI:PSCSIDevice):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Deregister a SCSI from the SCSI table</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceFind(SCSIId:LongWord):PSCSIDevice;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceFindByName(const Name:String):PSCSIDevice; inline;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceFindByDescription(const Description:String):PSCSIDevice; inline;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceEnumerate(Callback:TSCSIEnumerate; Data:Pointer):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceNotification(SCSI:PSCSIDevice; Callback:TSCSINotification; Data:Pointer; Notification,Flags:LongWord):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIHostCreate:PSCSIHost;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Create a new Host entry</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Return
+| Pointer to new Host entry or nil if host could not be created
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIHostCreateEx(Size:LongWord):PSCSIHost;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Create a new Host entry</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Size
+| Size in bytes to allocate for new host (Including the host entry)
+|-
+! Return
+| Pointer to new Host entry or nil if host could not be created
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIHostDestroy(Host:PSCSIHost):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Destroy an existing Host entry</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIHostRegister(Host:PSCSIHost):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Register a new Host in the Host table</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIHostDeregister(Host:PSCSIHost):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Deregister a Host from the Host table</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIHostFind(HostId:LongWord):PSCSIHost;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIHostEnumerate(Callback:TSCSIHostEnumerate; Data:Pointer):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+'''SCSI helper functions'''
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIGetCount:LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the current SCSI count</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceCheck(SCSI:PSCSIDevice):PSCSIDevice;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Check if the supplied SCSI is in the SCSI table</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure SCSILog(Level:LongWord; SCSI:PSCSIDevice; const AText:String);</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure SCSILogInfo(SCSI:PSCSIDevice; const AText:String); inline;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure SCSILogWarn(SCSI:PSCSIDevice; const AText:String); inline;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure SCSILogError(SCSI:PSCSIDevice; const AText:String); inline;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">procedure SCSILogDebug(SCSI:PSCSIDevice; const AText:String); inline;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIDeviceTypeToStorageType(DeviceType:Byte; Removable,Floppy:Boolean):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIHostGetCount:LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Get the current Host count</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIHostCheck(Host:PSCSIHost):PSCSIHost;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' Check if the supplied Host is in the host table</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+'''SCSI storage functions'''
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIStorageDeviceRead(Storage:PStorageDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIStorageDeviceWrite(Storage:PStorageDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
+<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
+<pre style="border: 0; padding-bottom:0px;">function SCSIStorageDeviceControl(Storage:PStorageDevice; Request:Integer; Argument1:PtrUInt; var Argument2:PtrUInt):LongWord;</pre>
+<div style="font-size: 14px; padding-left: 12px;">'''Description:''' To be documented</div>
+<div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;">
+{| class="wikitable" style="font-size: 14px; background: white;"
+|-
+! Note
+| None documented
+|-
+|}
+</div></div>
+<br />
 Return to [[Unit_Reference|Unit Reference]]

`SCSI_TYPE_NONE = 0;`
`SCSI_TYPE_HDD = 1;`

`SCSI_STATE_EJECTED = 0;`
`SCSI_STATE_INSERTED = 1;`