Unit Storage
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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
procedure StorageInit;
| Note | To be documented |
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Storage functions
function StorageDeviceRead(Storage:PStorageDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;
| Note | To be documented |
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function StorageDeviceWrite(Storage:PStorageDevice; const Start,Count:Int64; Buffer:Pointer):LongWord;
| Note | To be documented |
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function StorageDeviceErase(Storage:PStorageDevice; const Start,Count:Int64):LongWord;
| Note | To be documented |
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function StorageDeviceControl(Storage:PStorageDevice; Request:Integer; Argument1:LongWord; var Argument2:LongWord):LongWord;
| Note | To be documented |
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function StorageDeviceSetState(Storage:PStorageDevice; State:LongWord):LongWord;
| 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 |
function StorageDeviceStartStatus(Storage:PStorageDevice; Interval:LongWord):LongWord;
| 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 |
function StorageDeviceStopStatus(Storage:PStorageDevice):LongWord;
| Storage | The storage to stop status monitoring for |
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| Return | ERROR_SUCCESS if completed or another error code on failure |
function StorageDeviceCreate:PStorageDevice;
| Return | Pointer to new Storage entry or nil if storage could not be created |
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function StorageDeviceCreateEx(Size:LongWord):PStorageDevice;
| Size | Size in bytes to allocate for new storage (Including the storage entry) |
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| Return | Pointer to new Storage entry or nil if storage could not be created |
function StorageDeviceDestroy(Storage:PStorageDevice):LongWord;
| Note | To be documented |
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function StorageDeviceRegister(Storage:PStorageDevice):LongWord;
| Note | To be documented |
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function StorageDeviceDeregister(Storage:PStorageDevice):LongWord;
| Note | To be documented |
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function StorageDeviceFind(StorageId:LongWord):PStorageDevice;
| Note | To be documented |
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function StorageDeviceFindByName(const Name:String):PStorageDevice; inline;
| Note | To be documented |
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function StorageDeviceFindByDescription(const Description:String):PStorageDevice; inline;
| Note | To be documented |
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function StorageDeviceEnumerate(Callback:TStorageEnumerate; Data:Pointer):LongWord;
| Note | To be documented |
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function StorageDeviceNotification(Storage:PStorageDevice; Callback:TStorageNotification; Data:Pointer; Notification,Flags:LongWord):LongWord;
| Note | To be documented |
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