Unit Storage

Return to Unit Reference

Description

---

Storage Devices

This unit provides both the Storage device interface and the generic USB mass storage driver.

USB Mass Storage Devices

The USB Mass Storage Class Control/Bulk/Interrupt (CBI) Transport specification is approved for use only with full-speed floppy disk drives. CBI shall not be used in high-speed capable devices, or in devices other than floppy disk drives. CBI shall not be used in devices that implement LSDFS. Usage of CBI for any new design is discouraged.

Therefore the majority of USB Mass Storage devices use the Bulk only interface.

USB mass storage class devices normally use the SCSI command set and therefore the USB storage driver consumes the SCSI unit for the protocol and command definitions. USB mass storage devices are registered directly as Storage devices not as SCSI devices.

Constants

---

To be documented

Type definitions

---

To be documented

Public variables

---

To be documented

Function declarations

---

Initialization functions

[Expand]

procedure StorageInit;

Description: To be documented

Note	To be documented

Storage functions

[Expand]

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

Description: To be documented

Note	To be documented

[Expand]

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

Description: To be documented

Note	To be documented

[Expand]

function StorageDeviceErase(Storage:PStorageDevice; const Start,Count:Int64):LongWord;

Description: To be documented

Note	To be documented

[Expand]

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

Description: To be documented

Note	To be documented

[Expand]

function StorageDeviceSetState(Storage:PStorageDevice; State:LongWord):LongWord;

Description: Set the state of the specified storage and send a notification

Storage	The storage to set the state for
State	The new state to set and notify
Return	ERROR_SUCCESS if completed or another error code on failure

[Expand]

function StorageDeviceStartStatus(Storage:PStorageDevice; Interval:LongWord):LongWord;

Description: Start status monitoring on the specified storage for insert/eject notifications

Storage	The storage to start status monitoring for
Interval	The status monitoring interval in milliseconds
Return	ERROR_SUCCESS if completed or another error code on failure

[Expand]

function StorageDeviceStopStatus(Storage:PStorageDevice):LongWord;

Description: Stop status monitoring on the specified storage for insert/eject notifications

Storage	The storage to stop status monitoring for
Return	ERROR_SUCCESS if completed or another error code on failure

[Expand]

function StorageDeviceCreate:PStorageDevice;

Description: Create a new Storage entry

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

[Expand]

function StorageDeviceCreateEx(Size:LongWord):PStorageDevice;

Description: Create a new Storage entry

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

[Expand]

function StorageDeviceDestroy(Storage:PStorageDevice):LongWord;

Description: Destroy an existing Storage entry

Note	To be documented

[Expand]

function StorageDeviceRegister(Storage:PStorageDevice):LongWord;

Description: Register a new Storage in the Storage table

Note	To be documented

[Expand]

function StorageDeviceDeregister(Storage:PStorageDevice):LongWord;

Description: Deregister a Storage from the Storage table

Note	To be documented

[Expand]

function StorageDeviceFind(StorageId:LongWord):PStorageDevice;

Description: To be documented

Note	To be documented

[Expand]

function StorageDeviceFindByName(const Name:String):PStorageDevice; inline;

Description: To be documented

Note	To be documented

[Expand]

function StorageDeviceFindByDescription(const Description:String):PStorageDevice; inline;

Description: To be documented

Note	To be documented

[Expand]

function StorageDeviceEnumerate(Callback:TStorageEnumerate; Data:Pointer):LongWord;

Description: To be documented

Note	To be documented

[Expand]

function StorageDeviceNotification(Storage:PStorageDevice; Callback:TStorageNotification; Data:Pointer; Notification,Flags:LongWord):LongWord;

Description: To be documented

Note	To be documented

Return to Unit Reference