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unit wnaspi32;
{$mode objfpc}
interface
uses Windows;
type
LPSRB = Pointer;
const
{ $packrecords c}
SENSE_LEN = 14; // Default sense buffer length
SRB_DIR_SCSI = $00; // Direction determined by SCSI command
SRB_DIR_IN = $08; // Transfer from SCSI target to host
SRB_DIR_OUT = $10; // Transfer from host to SCSI target
SRB_POSTING = $01; // Enable ASPI posting
SRB_EVENT_NOTIFY = $40; // Enable ASPI event notification
SRB_ENABLE_RESIDUAL_COUNT = $04; // Enable residual byte count reporting
SRB_DATA_SG_LIST = $02; // Data buffer points to scatter-gather list
WM_ASPIPOST = $4D42; // ASPI Post message
{ ---------------------------------------------------------------------
ASPI Command Definitions
---------------------------------------------------------------------}
SC_HA_INQUIRY = $00; // Host adapter inquiry
SC_GET_DEV_TYPE = $01; // Get device type
SC_EXEC_SCSI_CMD = $02; // Execute SCSI command
SC_ABORT_SRB = $03; // Abort an SRB
SC_RESET_DEV = $04; // SCSI bus device reset
SC_GET_DISK_INFO = $06; // Get Disk information
{ ---------------------------------------------------------------------
SRB Status
---------------------------------------------------------------------}
SS_PENDING = $00; // SRB being processed
SS_COMP = $01; // SRB completed without error
SS_ABORTED = $02; // SRB aborted
SS_ABORT_FAIL = $03; // Unable to abort SRB
SS_ERR = $04; // SRB completed with error
SS_INVALID_CMD = $80; // Invalid ASPI command
SS_INVALID_HA = $81; // Invalid host adapter number
SS_NO_DEVICE = $82; // SCSI device not installed
SS_INVALID_SRB = $E0; // Invalid parameter set in SRB
SS_FAILED_INIT = $E4; // ASPI for windows failed init
SS_ASPI_IS_BUSY = $E5; // No resources available to execute cmd
SS_BUFFER_TO_BIG = $E6; // Buffer size to big to handle!
SS_NO_ADAPTERS = $E8; // No adapters.
{ ---------------------------------------------------------------------
Host Adapter Status
---------------------------------------------------------------------}
HASTAT_OK = $00; // Host adapter did not detect an // error
HASTAT_SEL_TO = $11; // Selection Timeout
HASTAT_DO_DU = $12; // Data overrun data underrun
HASTAT_BUS_FREE = $13; // Unexpected bus free
HASTAT_PHASE_ERR = $14; // Target bus phase sequence // failure
HASTAT_TIMEOUT = $09; // Timed out while SRB was waiting to beprocessed.
HASTAT_COMMAND_TIMEOUT = $0B; // While processing the SRB, the adapter timed out.
HASTAT_MESSAGE_REJECT = $0D; // While processing SRB, the // adapter received a MESSAGE // REJECT.
HASTAT_BUS_RESET = $0E; // A bus reset was detected.
HASTAT_PARITY_ERROR = $0F; // A parity error was detected.
HASTAT_REQUEST_SENSE_FAILED = $10; // The adapter failed in issuing
{ ---------------------------------------------------------------------
SRB - HOST ADAPTER INQUIRY - SC_HA_INQUIRY
---------------------------------------------------------------------}
type
SRB_HAInquiry = record
SRB_Cmd : Byte; // ASPI command code = SC_HA_INQUIRY
SRB_Status : Byte; // ASPI command status byte
SRB_HaId : Byte; // ASPI host adapter number
SRB_Flags : Byte; // ASPI request flags
SRB_Hdr_Rsvd : DWORD; // Reserved, MUST = 0
HA_Count : Byte; // Number of host adapters present
HA_SCSI_ID : Byte; // SCSI ID of host adapter
HA_ManagerId : array[0..15] of Byte; // String describing the manager
HA_Identifier : array[0..15] of Byte; // String describing the host adapter
HA_Unique : array[0..15] of Byte; // Host Adapter Unique parameters
HA_Rsvd1 : Word;
end;
PSRB_HAInquiry = ^SRB_HAInquiry;
TSRB_HAInquiry = SRB_HAInquiry;
{ ---------------------------------------------------------------------
SRB - GET DEVICE TYPE - SC_GET_DEV_TYPE
---------------------------------------------------------------------}
SRB_GDEVBlock = record
SRB_Cmd, // ASPI command code = SC_GET_DEV_TYPE
SRB_Status, // ASPI command status byte
SRB_HaId, // ASPI host adapter number
SRB_Flags : BYTE; // Reserved
SRB_Hdr_Rsvd : DWORD; // Reserved
SRB_Target, // Target's SCSI ID
SRB_Lun, // Target's LUN number
SRB_DeviceType, // Target's peripheral device type
SRB_Rsvd1 : BYTE;
end;
TSRB_GDEVBlock = SRB_GDEVBlock;
PSRB_GDEVBlock = ^SRB_GDEVBlock;
{ ---------------------------------------------------------------------
SRB - EXECUTE SCSI COMMAND - SC_EXEC_SCSI_CMD
---------------------------------------------------------------------}
SRB_ExecSCSICmd = record
SRB_Cmd, // ASPI command code = SC_EXEC_SCSI_CMD
SRB_Status, // ASPI command status byte
SRB_HaId, // ASPI host adapter number
SRB_Flags : BYTE; // ASPI request flags
SRB_Hdr_Rsvd : DWORD; // Reserved
SRB_Target, // Target's SCSI ID
SRB_Lun : BYTE; // Target's LUN number
SRB_Rsvd1 : WORD; // Reserved for Alignment
SRB_BufLen : DWORD; // Data Allocation Length
SRB_BufPointer : Pointer; // Data Buffer Pointer
SRB_SenseLen, // Sense Allocation Length
SRB_CDBLen, // CDB Length
SRB_HaStat, // Host Adapter Status
SRB_TargStat : BYTE; // Target Status
SRB_PostProc, // Post routine
SRB_Rsvd2 : Pointer; // Reserved
SRB_Rsvd3, // Reserved for alignment
CDBByte : array[0..15] of byte; // SCSI CDB
SenseArea : array[0..SENSE_LEN + 1] of byte; // Request Sense buffer
end;
TSRB_ExecSCSICmd = SRB_ExecSCSICmd;
PSRB_ExecSCSICmd = ^SRB_ExecSCSICmd;
{ ---------------------------------------------------------------------
SRB - ABORT AN SRB - SC_ABORT_SRB
---------------------------------------------------------------------}
SRB_Abort = record
SRB_Cmd, // ASPI command code = SC_EXEC_SCSI_CMD
SRB_Status, // ASPI command status byte
SRB_HaId, // ASPI host adapter number
SRB_Flags : BYTE; // Reserved
SRB_Hdr_Rsvd : DWORD; // Reserved
SRB_ToAbort : Pointer; // Pointer to SRB to abort
end;
TSRB_Abort = SRB_Abort;
PSRB_Abort = ^SRB_Abort;
{ ---------------------------------------------------------------------
SRB - BUS DEVICE RESET - SC_RESET_DEV
---------------------------------------------------------------------}
SRB_BusDeviceReset = record
SRB_Cmd, // ASPI command code = SC_EXEC_SCSI_CMD
SRB_Status, // ASPI command status byte
SRB_HaId, // ASPI host adapter number
SRB_Flags : BYTE; // Reserved
SRB_Hdr_Rsvd : DWORD; // Reserved
SRB_Target, // Target's SCSI ID
SRB_Lun : BYTE; // Target's LUN number
SRB_Rsvd1 : array[0..11] of byte; // Reserved for Alignment
SRB_HaStat, // Host Adapter Status
SRB_TargStat : BYTE; // Target Status
SRB_PostProc, // Post routine
SRB_Rsvd2 : Pointer; // Reserved
SRB_Rsvd3, // Reserved
CDBByte : array[0..15] of byte; // SCSI CDB
end;
TSRB_BusDeviceReset = SRB_BusDeviceReset;
PSRB_BusDeviceReset = ^SRB_BusDeviceReset;
{ ---------------------------------------------------------------------
SRB - GET DISK INFORMATION - SC_GET_DISK_INFO
---------------------------------------------------------------------}
SRB_GetDiskInfo = record
SRB_Cmd, // ASPI command code = SC_EXEC_SCSI_CMD
SRB_Status, // ASPI command status byte
SRB_HaId, // ASPI host adapter number
SRB_Flags : BYTE; // Reserved
SRB_Hdr_Rsvd : DWORD; // Reserved
SRB_Target, // Target's SCSI ID
SRB_Lun, // Target's LUN number
SRB_DriveFlags, // Driver flags
SRB_Int13HDriveInfo, // Host Adapter Status
SRB_Heads, // Preferred number of heads translation
SRB_Sectors : BYTE; // Preferred number of sectors translation
SRB_Rsvd1 : array[0..9] of byte; // Reserved
end;
TSRB_GetDiskInfo = SRB_GetDiskInfo;
PSRB_GetDiskInfo = ^SRB_GetDiskInfo;
type
TSendASPI32Command = function( LPSRB : Pointer ) : DWORD; cdecl;
TGetASPI32SupportInfo = function : DWORD; cdecl;
Const
SendASPI32Command : TSendASPI32Command = nil;
GetASPI32SupportInfo : TGetASPI32SupportInfo = nil;
Function ASPILoaded : Boolean;
Procedure CheckASPI;
procedure UnloadASPI;
implementation
uses dynlibs;
const
HWNASPI : TLibHandle = 0;
WNASPI = 'wnaspi32.dll';
Function ASPILoaded : Boolean;
begin
Result:=HWNASPI<>0;
end;
Procedure CheckASPI;
begin
HWNASPI:=LoadLibrary(WNASPI);
if (HWNASPI<>0) then
begin
SendASPI32Command:=TSendASPI32Command(GetProcAddress(HWNASPI,'SendASPI32Command'));
GetASPI32SupportInfo:=TGetASPI32SupportInfo(GetProcAddress(HWNASPI,'GetASPI32SupportInfo'));
end
end;
procedure UnloadASPI;
begin
if (HWNASPI<>0) then
begin
FreeLibrary(HWNASPI);
HWNASPI:=TLibHandle(0);
SendASPI32Command:=nil;
GetASPI32SupportInfo:=nil;
end;
end;
initialization
CheckAspi;
finalization
UnloadASPI;
end.
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