Sample Code
Windows Driver Samples/ Disk Class Driver/ C++/ src/ diskwmi.c/
/*++
Copyright (C) Microsoft Corporation, 1991 - 2010
Module Name:
diskwmi.c
Abstract:
SCSI disk class driver - WMI support routines
Environment:
kernel mode only
Notes:
Revision History:
--*/
#include "disk.h"
#ifdef DEBUG_USE_WPP
#include "diskwmi.tmh"
#endif
NTSTATUS
DiskSendFailurePredictIoctl(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
PSTORAGE_PREDICT_FAILURE checkFailure
);
NTSTATUS
DiskGetIdentifyInfo(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
PBOOLEAN SupportSmart
);
NTSTATUS
DiskDetectFailurePrediction(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
PFAILURE_PREDICTION_METHOD FailurePredictCapability,
BOOLEAN ScsiAddressAvailable
);
NTSTATUS
DiskReadFailurePredictThresholds(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
PSTORAGE_FAILURE_PREDICT_THRESHOLDS DiskSmartThresholds
);
NTSTATUS
DiskReadSmartLog(
IN PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
IN UCHAR SectorCount,
IN UCHAR LogAddress,
OUT PUCHAR Buffer
);
NTSTATUS
DiskWriteSmartLog(
IN PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
IN UCHAR SectorCount,
IN UCHAR LogAddress,
IN PUCHAR Buffer
);
IO_WORKITEM_ROUTINE DiskReregWorker;
IO_COMPLETION_ROUTINE DiskInfoExceptionComplete;
//
// WMI reregistration globals
//
// Since it will take too long to do a mode sense on some drive, we
// need a good way to effect the mode sense for the info exceptions
// mode page so that we can determine if SMART is supported and enabled
// for the drive. So the strategy is to do an asynchronous mode sense
// when the device starts and then look at the info exceptions mode
// page within the completion routine. Now within the completion
// routine we cannot call IoWMIRegistrationControl since we are at DPC
// level, so we create a stack of device objects that will be processed
// by a single work item that is fired off only when the stack
// transitions from empty to non empty.
//
SINGLE_LIST_ENTRY DiskReregHead;
KSPIN_LOCK DiskReregSpinlock;
LONG DiskReregWorkItems;
GUIDREGINFO DiskWmiFdoGuidList[] =
{
{
WMI_DISK_GEOMETRY_GUID,
1,
0
},
{
WMI_STORAGE_FAILURE_PREDICT_STATUS_GUID,
1,
WMIREG_FLAG_EXPENSIVE
},
{
WMI_STORAGE_FAILURE_PREDICT_DATA_GUID,
1,
WMIREG_FLAG_EXPENSIVE
},
{
WMI_STORAGE_FAILURE_PREDICT_FUNCTION_GUID,
1,
WMIREG_FLAG_EXPENSIVE
},
{
WMI_STORAGE_PREDICT_FAILURE_EVENT_GUID,
1,
WMIREG_FLAG_EVENT_ONLY_GUID
},
{
WMI_STORAGE_FAILURE_PREDICT_THRESHOLDS_GUID,
1,
WMIREG_FLAG_EXPENSIVE
},
{
WMI_STORAGE_SCSI_INFO_EXCEPTIONS_GUID,
1,
0
}
};
GUID DiskPredictFailureEventGuid = WMI_STORAGE_PREDICT_FAILURE_EVENT_GUID;
#define DiskGeometryGuid 0
#define SmartStatusGuid 1
#define SmartDataGuid 2
#define SmartPerformFunction 3
#define AllowDisallowPerformanceHit 1
#define EnableDisableHardwareFailurePrediction 2
#define EnableDisableFailurePredictionPolling 3
#define GetFailurePredictionCapability 4
#define EnableOfflineDiags 5
#define SmartEventGuid 4
#define SmartThresholdsGuid 5
#define ScsiInfoExceptionsGuid 6
#ifdef ALLOC_PRAGMA
#pragma alloc_text(PAGE, DiskWmiFunctionControl)
#pragma alloc_text(PAGE, DiskFdoQueryWmiRegInfo)
#pragma alloc_text(PAGE, DiskFdoQueryWmiDataBlock)
#pragma alloc_text(PAGE, DiskFdoSetWmiDataBlock)
#pragma alloc_text(PAGE, DiskFdoSetWmiDataItem)
#pragma alloc_text(PAGE, DiskFdoExecuteWmiMethod)
#pragma alloc_text(PAGE, DiskDetectFailurePrediction)
#pragma alloc_text(PAGE, DiskEnableDisableFailurePrediction)
#pragma alloc_text(PAGE, DiskEnableDisableFailurePredictPolling)
#pragma alloc_text(PAGE, DiskReadFailurePredictStatus)
#pragma alloc_text(PAGE, DiskReadFailurePredictData)
#pragma alloc_text(PAGE, DiskReadFailurePredictThresholds)
#pragma alloc_text(PAGE, DiskGetIdentifyInfo)
#pragma alloc_text(PAGE, DiskReadSmartLog)
#pragma alloc_text(PAGE, DiskWriteSmartLog)
#pragma alloc_text(PAGE, DiskPerformSmartCommand)
#pragma alloc_text(PAGE, DiskSendFailurePredictIoctl)
#pragma alloc_text(PAGE, DiskReregWorker)
#pragma alloc_text(PAGE, DiskInitializeReregistration)
#if (NTDDI_VERSION >= NTDDI_WINBLUE)
#pragma alloc_text(PAGE, DiskGetModePage)
#pragma alloc_text(PAGE, DiskEnableInfoExceptions)
#endif // (NTDDI_VERSION >= NTDDI_WINBLUE)
#endif
//
// Note:
// Some port drivers assume that the SENDCMDINPARAMS structure will always be atleast
// sizeof(SENDCMDINPARAMS). So do not adjust for the [pBuffer] if it isn't being used
//
//
// SMART/IDE specific routines
//
//
// Read SMART data attributes.
// SrbControl should be : sizeof(SRB_IO_CONTROL) + MAX[ sizeof(SENDCMDINPARAMS), sizeof(SENDCMDOUTPARAMS) - 1 + READ_ATTRIBUTE_BUFFER_SIZE ]
// Attribute data returned at &SendCmdOutParams->bBuffer[0]
//
#define DiskReadSmartData(FdoExtension, \
SrbControl, \
BufferSize) \
DiskPerformSmartCommand(FdoExtension, \
IOCTL_SCSI_MINIPORT_READ_SMART_ATTRIBS, \
SMART_CMD, \
READ_ATTRIBUTES, \
0, \
0, \
(SrbControl), \
(BufferSize))
//
// Read SMART data thresholds.
// SrbControl should be : sizeof(SRB_IO_CONTROL) + MAX[ sizeof(SENDCMDINPARAMS), sizeof(SENDCMDOUTPARAMS) - 1 + READ_THRESHOLD_BUFFER_SIZE ]
// Attribute data returned at &SendCmdOutParams->bBuffer[0]
//
#define DiskReadSmartThresholds(FdoExtension, \
SrbControl, \
BufferSize) \
DiskPerformSmartCommand(FdoExtension, \
IOCTL_SCSI_MINIPORT_READ_SMART_THRESHOLDS, \
SMART_CMD, \
READ_THRESHOLDS, \
0, \
0, \
(SrbControl), \
(BufferSize))
//
// Read SMART status
// SrbControl should be : sizeof(SRB_IO_CONTROL) + MAX[ sizeof(SENDCMDINPARAMS), sizeof(SENDCMDOUTPARAMS) - 1 + sizeof(IDEREGS) ]
// Failure predicted if SendCmdOutParams->bBuffer[3] == 0xf4 and SendCmdOutParams->bBuffer[4] == 0x2c
//
#define DiskReadSmartStatus(FdoExtension, \
SrbControl, \
BufferSize) \
DiskPerformSmartCommand(FdoExtension, \
IOCTL_SCSI_MINIPORT_RETURN_STATUS, \
SMART_CMD, \
RETURN_SMART_STATUS, \
0, \
0, \
(SrbControl), \
(BufferSize))
//
// Read disks IDENTIFY data
// SrbControl should be : sizeof(SRB_IO_CONTROL) + MAX[ sizeof(SENDCMDINPARAMS), sizeof(SENDCMDOUTPARAMS) - 1 + IDENTIFY_BUFFER_SIZE ]
// Identify data returned at &SendCmdOutParams->bBuffer[0]
//
#define DiskGetIdentifyData(FdoExtension, \
SrbControl, \
BufferSize) \
DiskPerformSmartCommand(FdoExtension, \
IOCTL_SCSI_MINIPORT_IDENTIFY, \
ID_CMD, \
0, \
0, \
0, \
(SrbControl), \
(BufferSize))
//
// Enable SMART
//
_inline NTSTATUS
DiskEnableSmart(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension
)
{
UCHAR srbControl[sizeof(SRB_IO_CONTROL) + sizeof(SENDCMDINPARAMS)] = {0};
ULONG bufferSize = sizeof(srbControl);
return DiskPerformSmartCommand(FdoExtension,
IOCTL_SCSI_MINIPORT_ENABLE_SMART,
SMART_CMD,
ENABLE_SMART,
0,
0,
(PSRB_IO_CONTROL)srbControl,
&bufferSize);
}
//
// Disable SMART
//
_inline NTSTATUS
DiskDisableSmart(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension
)
{
UCHAR srbControl[sizeof(SRB_IO_CONTROL) + sizeof(SENDCMDINPARAMS)] = {0};
ULONG bufferSize = sizeof(srbControl);
return DiskPerformSmartCommand(FdoExtension,
IOCTL_SCSI_MINIPORT_DISABLE_SMART,
SMART_CMD,
DISABLE_SMART,
0,
0,
(PSRB_IO_CONTROL)srbControl,
&bufferSize);
}
//
// Enable Attribute Autosave
//
_inline NTSTATUS
DiskEnableSmartAttributeAutosave(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension
)
{
UCHAR srbControl[sizeof(SRB_IO_CONTROL) + sizeof(SENDCMDINPARAMS)] = {0};
ULONG bufferSize = sizeof(srbControl);
return DiskPerformSmartCommand(FdoExtension,
IOCTL_SCSI_MINIPORT_ENABLE_DISABLE_AUTOSAVE,
SMART_CMD,
ENABLE_DISABLE_AUTOSAVE,
0xf1,
0,
(PSRB_IO_CONTROL)srbControl,
&bufferSize);
}
//
// Disable Attribute Autosave
//
_inline NTSTATUS
DiskDisableSmartAttributeAutosave(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension
)
{
UCHAR srbControl[sizeof(SRB_IO_CONTROL) + sizeof(SENDCMDINPARAMS)] = {0};
ULONG bufferSize = sizeof(srbControl);
return DiskPerformSmartCommand(FdoExtension,
IOCTL_SCSI_MINIPORT_ENABLE_DISABLE_AUTOSAVE,
SMART_CMD,
ENABLE_DISABLE_AUTOSAVE,
0x00,
0,
(PSRB_IO_CONTROL)srbControl,
&bufferSize);
}
//
// Initialize execution of SMART online diagnostics
//
_inline NTSTATUS
DiskExecuteSmartDiagnostics(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
UCHAR Subcommand
)
{
UCHAR srbControl[sizeof(SRB_IO_CONTROL) + sizeof(SENDCMDINPARAMS)] = {0};
ULONG bufferSize = sizeof(srbControl);
return DiskPerformSmartCommand(FdoExtension,
IOCTL_SCSI_MINIPORT_EXECUTE_OFFLINE_DIAGS,
SMART_CMD,
EXECUTE_OFFLINE_DIAGS,
0,
Subcommand,
(PSRB_IO_CONTROL)srbControl,
&bufferSize);
}
NTSTATUS
DiskReadSmartLog(
IN PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
IN UCHAR SectorCount,
IN UCHAR LogAddress,
OUT PUCHAR Buffer
)
{
PSRB_IO_CONTROL srbControl;
NTSTATUS status;
PSENDCMDOUTPARAMS sendCmdOutParams;
ULONG logSize, bufferSize;
PAGED_CODE();
logSize = SectorCount * SMART_LOG_SECTOR_SIZE;
bufferSize = sizeof(SRB_IO_CONTROL) + max( sizeof(SENDCMDINPARAMS), sizeof(SENDCMDOUTPARAMS) - 1 + logSize );
srbControl = ExAllocatePoolWithTag(NonPagedPoolNx,
bufferSize,
DISK_TAG_SMART);
if (srbControl != NULL)
{
status = DiskPerformSmartCommand(FdoExtension,
IOCTL_SCSI_MINIPORT_READ_SMART_LOG,
SMART_CMD,
SMART_READ_LOG,
SectorCount,
LogAddress,
srbControl,
&bufferSize);
if (NT_SUCCESS(status))
{
sendCmdOutParams = (PSENDCMDOUTPARAMS)((PUCHAR)srbControl +
sizeof(SRB_IO_CONTROL));
RtlCopyMemory(Buffer,
&sendCmdOutParams->bBuffer[0],
logSize);
}
FREE_POOL(srbControl);
} else {
status = STATUS_INSUFFICIENT_RESOURCES;
}
return(status);
}
NTSTATUS
DiskWriteSmartLog(
IN PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
IN UCHAR SectorCount,
IN UCHAR LogAddress,
IN PUCHAR Buffer
)
{
PSRB_IO_CONTROL srbControl;
NTSTATUS status;
PSENDCMDINPARAMS sendCmdInParams;
ULONG logSize, bufferSize;
PAGED_CODE();
logSize = SectorCount * SMART_LOG_SECTOR_SIZE;
bufferSize = sizeof(SRB_IO_CONTROL) + sizeof(SENDCMDINPARAMS) - 1 +
logSize;
srbControl = ExAllocatePoolWithTag(NonPagedPoolNx,
bufferSize,
DISK_TAG_SMART);
if (srbControl != NULL)
{
sendCmdInParams = (PSENDCMDINPARAMS)((PUCHAR)srbControl +
sizeof(SRB_IO_CONTROL));
RtlCopyMemory(&sendCmdInParams->bBuffer[0],
Buffer,
logSize);
status = DiskPerformSmartCommand(FdoExtension,
IOCTL_SCSI_MINIPORT_WRITE_SMART_LOG,
SMART_CMD,
SMART_WRITE_LOG,
SectorCount,
LogAddress,
srbControl,
&bufferSize);
FREE_POOL(srbControl);
} else {
status = STATUS_INSUFFICIENT_RESOURCES;
}
return(status);
}
NTSTATUS
DiskPerformSmartCommand(
IN PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
IN ULONG SrbControlCode,
IN UCHAR Command,
IN UCHAR Feature,
IN UCHAR SectorCount,
IN UCHAR SectorNumber,
IN OUT PSRB_IO_CONTROL SrbControl,
OUT PULONG BufferSize
)
/*++
Routine Description:
This routine will perform some SMART command
Arguments:
FdoExtension is the FDO device extension
SrbControlCode is the SRB control code to use for the request
Command is the SMART command to be executed. It may be SMART_CMD or
ID_CMD.
Feature is the value to place in the IDE feature register.
SectorCount is the value to place in the IDE SectorCount register
SrbControl is the buffer used to build the SRB_IO_CONTROL and pass
any input parameters. It also returns the output parameters.
*BufferSize on entry has total size of SrbControl and on return has
the size used in SrbControl.
Return Value:
status
--*/
{
PCOMMON_DEVICE_EXTENSION commonExtension = (PCOMMON_DEVICE_EXTENSION)FdoExtension;
PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
PUCHAR buffer;
PSENDCMDINPARAMS cmdInParameters;
NTSTATUS status;
ULONG availableBufferSize;
KEVENT event;
PIRP irp;
IO_STATUS_BLOCK ioStatus = { 0 };
SCSI_REQUEST_BLOCK srb = {0};
LARGE_INTEGER startingOffset;
ULONG length;
PIO_STACK_LOCATION irpStack;
UCHAR srbExBuffer[CLASS_SRBEX_NO_SRBEX_DATA_BUFFER_SIZE] = {0};
PSTORAGE_REQUEST_BLOCK srbEx = (PSTORAGE_REQUEST_BLOCK)srbExBuffer;
PSTOR_ADDR_BTL8 storAddrBtl8;
PAGED_CODE();
//
// Point to the 'buffer' portion of the SRB_CONTROL and compute how
// much room we have left in the srb control. Abort if the buffer
// isn't at least the size of SRB_IO_CONTROL.
//
buffer = (PUCHAR)SrbControl + sizeof(SRB_IO_CONTROL);
cmdInParameters = (PSENDCMDINPARAMS)buffer;
if (*BufferSize >= sizeof(SRB_IO_CONTROL)) {
availableBufferSize = *BufferSize - sizeof(SRB_IO_CONTROL);
} else {
return STATUS_BUFFER_TOO_SMALL;
}
#if DBG
//
// Ensure control codes and buffer lengths passed are correct
//
{
ULONG controlCode = 0;
ULONG lengthNeeded = sizeof(SENDCMDINPARAMS);
if (Command == SMART_CMD)
{
switch (Feature)
{
case ENABLE_SMART:
{
controlCode = IOCTL_SCSI_MINIPORT_ENABLE_SMART;
break;
}
case DISABLE_SMART:
{
controlCode = IOCTL_SCSI_MINIPORT_DISABLE_SMART;
break;
}
case RETURN_SMART_STATUS:
{
controlCode = IOCTL_SCSI_MINIPORT_RETURN_STATUS;
lengthNeeded = max( lengthNeeded, sizeof(SENDCMDOUTPARAMS) - 1 + sizeof(IDEREGS) );
break;
}
case ENABLE_DISABLE_AUTOSAVE:
{
controlCode = IOCTL_SCSI_MINIPORT_ENABLE_DISABLE_AUTOSAVE;
break;
}
case SAVE_ATTRIBUTE_VALUES:
{
controlCode = IOCTL_SCSI_MINIPORT_SAVE_ATTRIBUTE_VALUES;
break;
}
case EXECUTE_OFFLINE_DIAGS:
{
controlCode = IOCTL_SCSI_MINIPORT_EXECUTE_OFFLINE_DIAGS;
break;
}
case READ_ATTRIBUTES:
{
controlCode = IOCTL_SCSI_MINIPORT_READ_SMART_ATTRIBS;
lengthNeeded = max( lengthNeeded, sizeof(SENDCMDOUTPARAMS) - 1 + READ_ATTRIBUTE_BUFFER_SIZE );
break;
}
case READ_THRESHOLDS:
{
controlCode = IOCTL_SCSI_MINIPORT_READ_SMART_THRESHOLDS;
lengthNeeded = max( lengthNeeded, sizeof(SENDCMDOUTPARAMS) - 1 + READ_THRESHOLD_BUFFER_SIZE );
break;
}
case SMART_READ_LOG:
{
controlCode = IOCTL_SCSI_MINIPORT_READ_SMART_LOG;
lengthNeeded = max( lengthNeeded, sizeof(SENDCMDOUTPARAMS) - 1 + (SectorCount * SMART_LOG_SECTOR_SIZE) );
break;
}
case SMART_WRITE_LOG:
{
controlCode = IOCTL_SCSI_MINIPORT_WRITE_SMART_LOG;
lengthNeeded = lengthNeeded - 1 + (SectorCount * SMART_LOG_SECTOR_SIZE);
break;
}
}
} else if (Command == ID_CMD) {
controlCode = IOCTL_SCSI_MINIPORT_IDENTIFY;
lengthNeeded = max( lengthNeeded, sizeof(SENDCMDOUTPARAMS) - 1 + IDENTIFY_BUFFER_SIZE );
} else {
NT_ASSERT(FALSE);
}
NT_ASSERT(controlCode == SrbControlCode);
NT_ASSERT(availableBufferSize >= lengthNeeded);
}
#endif
//
// Build SrbControl and input to SMART command
//
SrbControl->HeaderLength = sizeof(SRB_IO_CONTROL);
RtlMoveMemory (SrbControl->Signature, "SCSIDISK", 8);
SrbControl->Timeout = FdoExtension->TimeOutValue;
SrbControl->Length = availableBufferSize;
SrbControl->ControlCode = SrbControlCode;
cmdInParameters->cBufferSize = sizeof(SENDCMDINPARAMS);
cmdInParameters->bDriveNumber = diskData->ScsiAddress.TargetId;
cmdInParameters->irDriveRegs.bFeaturesReg = Feature;
cmdInParameters->irDriveRegs.bSectorCountReg = SectorCount;
cmdInParameters->irDriveRegs.bSectorNumberReg = SectorNumber;
cmdInParameters->irDriveRegs.bCylLowReg = SMART_CYL_LOW;
cmdInParameters->irDriveRegs.bCylHighReg = SMART_CYL_HI;
cmdInParameters->irDriveRegs.bCommandReg = Command;
//
// Create and send irp
//
KeInitializeEvent(&event, NotificationEvent, FALSE);
startingOffset.QuadPart = (LONGLONG) 1;
length = SrbControl->HeaderLength + SrbControl->Length;
irp = IoBuildSynchronousFsdRequest(
IRP_MJ_SCSI,
commonExtension->LowerDeviceObject,
SrbControl,
length,
&startingOffset,
&event,
&ioStatus);
if (irp == NULL) {
return STATUS_INSUFFICIENT_RESOURCES;
}
irpStack = IoGetNextIrpStackLocation(irp);
//
// Set major and minor codes.
//
irpStack->MajorFunction = IRP_MJ_SCSI;
irpStack->MinorFunction = 1;
//
// Fill in SRB fields.
//
if (FdoExtension->AdapterDescriptor->SrbType == SRB_TYPE_STORAGE_REQUEST_BLOCK) {
irpStack->Parameters.Others.Argument1 = srbEx;
//
// Set up STORAGE_REQUEST_BLOCK fields
//
srbEx->Length = FIELD_OFFSET(STORAGE_REQUEST_BLOCK, Signature);
srbEx->Function = SRB_FUNCTION_STORAGE_REQUEST_BLOCK;
srbEx->Signature = SRB_SIGNATURE;
srbEx->Version = STORAGE_REQUEST_BLOCK_VERSION_1;
srbEx->SrbLength = sizeof(srbExBuffer);
srbEx->SrbFunction = SRB_FUNCTION_IO_CONTROL;
srbEx->RequestPriority = IoGetIoPriorityHint(irp);
srbEx->AddressOffset = sizeof(STORAGE_REQUEST_BLOCK);
srbEx->SrbFlags = FdoExtension->SrbFlags;
SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_DATA_IN);
SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_NO_QUEUE_FREEZE);
SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_NO_KEEP_AWAKE);
srbEx->RequestAttribute = SRB_SIMPLE_TAG_REQUEST;
srbEx->RequestTag = SP_UNTAGGED;
srbEx->OriginalRequest = irp;
//
// Set timeout to requested value.
//
srbEx->TimeOutValue = SrbControl->Timeout;
//
// Set the data buffer.
//
srbEx->DataBuffer = SrbControl;
srbEx->DataTransferLength = length;
//
// Set up address fields
//
storAddrBtl8 = (PSTOR_ADDR_BTL8) ((PUCHAR)srbEx + srbEx->AddressOffset);
storAddrBtl8->Type = STOR_ADDRESS_TYPE_BTL8;
storAddrBtl8->AddressLength = STOR_ADDR_BTL8_ADDRESS_LENGTH;
storAddrBtl8->Path = diskData->ScsiAddress.PathId;
storAddrBtl8->Target = diskData->ScsiAddress.TargetId;
storAddrBtl8->Lun = srb.Lun = diskData->ScsiAddress.Lun;
} else {
irpStack->Parameters.Others.Argument1 = &srb;
srb.PathId = diskData->ScsiAddress.PathId;
srb.TargetId = diskData->ScsiAddress.TargetId;
srb.Lun = diskData->ScsiAddress.Lun;
srb.Function = SRB_FUNCTION_IO_CONTROL;
srb.Length = sizeof(SCSI_REQUEST_BLOCK);
srb.SrbFlags = FdoExtension->SrbFlags;
SET_FLAG(srb.SrbFlags, SRB_FLAGS_DATA_IN);
SET_FLAG(srb.SrbFlags, SRB_FLAGS_NO_QUEUE_FREEZE);
SET_FLAG(srb.SrbFlags, SRB_FLAGS_NO_KEEP_AWAKE);
srb.QueueAction = SRB_SIMPLE_TAG_REQUEST;
srb.QueueTag = SP_UNTAGGED;
srb.OriginalRequest = irp;
//
// Set timeout to requested value.
//
srb.TimeOutValue = SrbControl->Timeout;
//
// Set the data buffer.
//
srb.DataBuffer = SrbControl;
srb.DataTransferLength = length;
}
//
// Flush the data buffer for output. This will insure that the data is
// written back to memory. Since the data-in flag is the the port driver
// will flush the data again for input which will ensure the data is not
// in the cache.
//
KeFlushIoBuffers(irp->MdlAddress, FALSE, TRUE);
//
// Call port driver to handle this request.
//
status = IoCallDriver(commonExtension->LowerDeviceObject, irp);
if (status == STATUS_PENDING) {
KeWaitForSingleObject(&event, Executive, KernelMode, FALSE, NULL);
status = ioStatus.Status;
}
return status;
}
NTSTATUS
DiskGetIdentifyInfo(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
PBOOLEAN SupportSmart
)
{
UCHAR outBuffer[sizeof(SRB_IO_CONTROL) + max( sizeof(SENDCMDINPARAMS), sizeof(SENDCMDOUTPARAMS) - 1 + IDENTIFY_BUFFER_SIZE )] = {0};
ULONG outBufferSize = sizeof(outBuffer);
NTSTATUS status;
PAGED_CODE();
status = DiskGetIdentifyData(FdoExtension,
(PSRB_IO_CONTROL)outBuffer,
&outBufferSize);
if (NT_SUCCESS(status))
{
PUSHORT identifyData = (PUSHORT)&(outBuffer[sizeof(SRB_IO_CONTROL) + sizeof(SENDCMDOUTPARAMS) - 1]);
USHORT commandSetSupported = identifyData[82];
*SupportSmart = ((commandSetSupported != 0xffff) &&
(commandSetSupported != 0) &&
((commandSetSupported & 1) == 1));
} else {
*SupportSmart = FALSE;
}
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_IOCTL, "DiskGetIdentifyInfo: SMART %s supported for device %p, status %lx\n",
*SupportSmart ? "is" : "is not",
FdoExtension->DeviceObject,
status));
return status;
}
//
// FP Ioctl specific routines
//
NTSTATUS
DiskSendFailurePredictIoctl(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
PSTORAGE_PREDICT_FAILURE checkFailure
)
{
KEVENT event;
PDEVICE_OBJECT deviceObject;
IO_STATUS_BLOCK ioStatus = { 0 };
PIRP irp;
NTSTATUS status;
PAGED_CODE();
KeInitializeEvent(&event, SynchronizationEvent, FALSE);
deviceObject = IoGetAttachedDeviceReference(FdoExtension->DeviceObject);
irp = IoBuildDeviceIoControlRequest(
IOCTL_STORAGE_PREDICT_FAILURE,
deviceObject,
NULL,
0,
checkFailure,
sizeof(STORAGE_PREDICT_FAILURE),
FALSE,
&event,
&ioStatus);
if (irp != NULL)
{
status = IoCallDriver(deviceObject, irp);
if (status == STATUS_PENDING)
{
KeWaitForSingleObject(&event, Executive, KernelMode, FALSE, NULL);
status = ioStatus.Status;
}
} else {
status = STATUS_INSUFFICIENT_RESOURCES;
}
ObDereferenceObject(deviceObject);
return status;
}
#if (NTDDI_VERSION >= NTDDI_WINBLUE)
NTSTATUS
DiskGetModePage(
_In_ PDEVICE_OBJECT Fdo,
_In_ UCHAR PageMode,
_In_ UCHAR PageControl,
_In_ PMODE_PARAMETER_HEADER ModeData,
_Inout_ PULONG ModeDataSize,
_Out_ PVOID* PageData
)
{
ULONG size = 0;
PVOID pageData = NULL;
PAGED_CODE();
if (ModeData == NULL ||
ModeDataSize == NULL ||
*ModeDataSize < sizeof(MODE_PARAMETER_HEADER) ||
PageData == NULL) {
return STATUS_INVALID_PARAMETER;
}
RtlZeroMemory (ModeData, *ModeDataSize);
size = ClassModeSenseEx(Fdo,
(PCHAR) ModeData,
*ModeDataSize,
PageMode,
PageControl);
if (size < sizeof(MODE_PARAMETER_HEADER)) {
//
// Retry the request in case of a check condition.
//
size = ClassModeSenseEx(Fdo,
(PCHAR) ModeData,
*ModeDataSize,
PageMode,
PageControl);
if (size < sizeof(MODE_PARAMETER_HEADER)) {
TracePrint((TRACE_LEVEL_ERROR, TRACE_FLAG_WMI, "DiskGetModePage: Mode Sense for Page Mode %d with Page Control %d failed\n",
PageMode, PageControl));
*ModeDataSize = 0;
return STATUS_IO_DEVICE_ERROR;
}
}
//
// If the length is greater than length indicated by the mode data reset
// the data to the mode data.
//
if (size > (ULONG) (ModeData->ModeDataLength + 1)) {
size = ModeData->ModeDataLength + 1;
}
*ModeDataSize = size;
//
// Find the mode page
//
pageData = ClassFindModePage((PCHAR) ModeData,
size,
PageMode,
TRUE);
if (pageData) {
*PageData = pageData;
return STATUS_SUCCESS;
} else {
*PageData = NULL;
return STATUS_NOT_SUPPORTED;
}
}
NTSTATUS
DiskEnableInfoExceptions(
_In_ PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
_In_ BOOLEAN Enable
)
{
PDISK_DATA diskData = (PDISK_DATA)(FdoExtension->CommonExtension.DriverData);
NTSTATUS status = STATUS_NOT_SUPPORTED;
PMODE_PARAMETER_HEADER modeData;
PMODE_INFO_EXCEPTIONS pageData;
MODE_INFO_EXCEPTIONS changeablePageData;
ULONG modeDataSize;
PAGED_CODE();
modeDataSize = MODE_DATA_SIZE;
modeData = ExAllocatePoolWithTag(NonPagedPoolNxCacheAligned,
modeDataSize,
DISK_TAG_INFO_EXCEPTION);
if (modeData == NULL) {
TracePrint((TRACE_LEVEL_ERROR, TRACE_FLAG_WMI, "DiskEnableInfoExceptions: Unable to allocate mode "
"data buffer\n"));
return STATUS_INSUFFICIENT_RESOURCES;
}
//
// First see which data is actually changeable.
//
status = DiskGetModePage(FdoExtension->DeviceObject,
MODE_PAGE_FAULT_REPORTING,
1, // Page Control = 1 indicates we want changeable values.
modeData,
&modeDataSize,
(PVOID*)&pageData);
if (!NT_SUCCESS(status) || pageData == NULL) {
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskEnableInfoExceptions: does NOT support SMART for device %p\n",
FdoExtension->DeviceObject));
FREE_POOL(modeData);
return STATUS_NOT_SUPPORTED;
}
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskEnableInfoExceptions: DOES support SMART for device %p\n",
FdoExtension->DeviceObject));
//
// At the very least, the DEXCPT bit must be changeable.
// If it's not, bail out now.
//
if (pageData->Dexcpt == 0) {
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskEnableInfoExceptions: does NOT support DEXCPT bit for device %p\n",
FdoExtension->DeviceObject));
FREE_POOL(modeData);
return STATUS_NOT_SUPPORTED;
}
//
// Cache away which values are changeable.
//
RtlCopyMemory(&changeablePageData, pageData, sizeof(MODE_INFO_EXCEPTIONS));
//
// Now get the current values.
//
status = DiskGetModePage(FdoExtension->DeviceObject,
MODE_PAGE_FAULT_REPORTING,
0, // Page Control = 0 indicates we want current values.
modeData,
&modeDataSize,
(PVOID*)&pageData);
if (!NT_SUCCESS(status) || pageData == NULL) {
//
// At this point we know the device supports this mode page so
// assert if something goes wrong here.
//
NT_ASSERT(NT_SUCCESS(status) && pageData);
FREE_POOL(modeData);
return STATUS_NOT_SUPPORTED;
}
//
// If the device is currently configured to not report any informational
// exceptions and we cannot change the value of that field, there's
// nothing to be done.
//
if (pageData->ReportMethod == 0 && changeablePageData.ReportMethod == 0) {
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskEnableInfoExceptions: MRIE field is 0 and is not changeable for device %p\n",
FdoExtension->DeviceObject));
FREE_POOL(modeData);
return STATUS_NOT_SUPPORTED;
}
//
// If the PERF bit is changeable, set it now.
//
if (changeablePageData.Perf) {
pageData->Perf = diskData->AllowFPPerfHit ? 0 : 1;
}
//
// If the MRIE field is changeable, set it to 4 so that informational
// exceptions get reported with the "Recovered Error" sense key.
//
if (changeablePageData.ReportMethod) {
pageData->ReportMethod = 4;
}
//
// Finally, set the DEXCPT bit appropriately to enable/disable
// informational exception reporting and send the Mode Select.
//
pageData->Dexcpt = !Enable;
status = ClassModeSelect(FdoExtension->DeviceObject,
(PCHAR)modeData,
modeDataSize,
pageData->PSBit);
//
// Update the failure prediction state. Note that for this particular
// mode FailurePredictionNone is used when it's not enabled.
//
if (NT_SUCCESS(status)) {
if (Enable) {
diskData->FailurePredictionCapability = FailurePredictionSense;
diskData->FailurePredictionEnabled = TRUE;
} else {
diskData->FailurePredictionCapability = FailurePredictionNone;
diskData->FailurePredictionEnabled = FALSE;
}
}
FREE_POOL(modeData);
return status;
}
#endif
//
// FP type independent routines
//
NTSTATUS
DiskEnableDisableFailurePrediction(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
BOOLEAN Enable
)
/*++
Routine Description:
Enable or disable failure prediction at the hardware level
Arguments:
FdoExtension
Enable
Return Value:
NT Status
--*/
{
NTSTATUS status;
PCOMMON_DEVICE_EXTENSION commonExtension = &(FdoExtension->CommonExtension);
PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
PAGED_CODE();
switch(diskData->FailurePredictionCapability)
{
case FailurePredictionSmart:
{
if (Enable)
{
status = DiskEnableSmart(FdoExtension);
} else {
status = DiskDisableSmart(FdoExtension);
}
if (NT_SUCCESS(status)) {
diskData->FailurePredictionEnabled = Enable;
}
break;
}
case FailurePredictionSense:
case FailurePredictionIoctl:
{
//
// We assume that the drive is already setup properly for
// failure prediction
//
status = STATUS_SUCCESS;
break;
}
default:
{
status = STATUS_INVALID_DEVICE_REQUEST;
}
}
return status;
}
NTSTATUS
DiskEnableDisableFailurePredictPolling(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
BOOLEAN Enable,
ULONG PollTimeInSeconds
)
/*++
Routine Description:
Enable or disable polling for hardware failure detection
Arguments:
FdoExtension
Enable
PollTimeInSeconds - if 0 then no change to current polling timer
Return Value:
NT Status
--*/
{
NTSTATUS status;
PCOMMON_DEVICE_EXTENSION commonExtension = (PCOMMON_DEVICE_EXTENSION)FdoExtension;
PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
PAGED_CODE();
if (Enable)
{
status = DiskEnableDisableFailurePrediction(FdoExtension,
Enable);
} else {
status = STATUS_SUCCESS;
}
if (NT_SUCCESS(status))
{
status = ClassSetFailurePredictionPoll(FdoExtension,
Enable ? diskData->FailurePredictionCapability :
FailurePredictionNone,
PollTimeInSeconds);
//
// Even if this failed we do not want to disable FP on the
// hardware. FP is only ever disabled on the hardware by
// specific command of the user.
//
}
return status;
}
NTSTATUS
DiskReadFailurePredictStatus(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
PSTORAGE_FAILURE_PREDICT_STATUS DiskSmartStatus
)
/*++
Routine Description:
Obtains current failure prediction status
Arguments:
FdoExtension
DiskSmartStatus
Return Value:
NT Status
--*/
{
PCOMMON_DEVICE_EXTENSION commonExtension = (PCOMMON_DEVICE_EXTENSION)FdoExtension;
PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
NTSTATUS status;
PAGED_CODE();
DiskSmartStatus->PredictFailure = FALSE;
switch(diskData->FailurePredictionCapability)
{
case FailurePredictionSmart:
{
UCHAR outBuffer[sizeof(SRB_IO_CONTROL) + max( sizeof(SENDCMDINPARAMS), sizeof(SENDCMDOUTPARAMS) - 1 + sizeof(IDEREGS) )] = {0};
ULONG outBufferSize = sizeof(outBuffer);
PSENDCMDOUTPARAMS cmdOutParameters;
status = DiskReadSmartStatus(FdoExtension,
(PSRB_IO_CONTROL)outBuffer,
&outBufferSize);
if (NT_SUCCESS(status))
{
cmdOutParameters = (PSENDCMDOUTPARAMS)(outBuffer +
sizeof(SRB_IO_CONTROL));
DiskSmartStatus->Reason = 0; // Unknown;
DiskSmartStatus->PredictFailure = ((cmdOutParameters->bBuffer[3] == 0xf4) &&
(cmdOutParameters->bBuffer[4] == 0x2c));
}
break;
}
case FailurePredictionSense:
{
DiskSmartStatus->Reason = FdoExtension->FailureReason;
DiskSmartStatus->PredictFailure = FdoExtension->FailurePredicted;
status = STATUS_SUCCESS;
break;
}
case FailurePredictionIoctl:
case FailurePredictionNone:
default:
{
status = STATUS_INVALID_DEVICE_REQUEST;
break;
}
}
return status;
}
NTSTATUS
DiskReadFailurePredictData(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
PSTORAGE_FAILURE_PREDICT_DATA DiskSmartData
)
/*++
Routine Description:
Obtains current failure prediction data. Not available for
FAILURE_PREDICT_SENSE types.
Arguments:
FdoExtension
DiskSmartData
Return Value:
NT Status
--*/
{
PCOMMON_DEVICE_EXTENSION commonExtension = (PCOMMON_DEVICE_EXTENSION)FdoExtension;
PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
NTSTATUS status;
PAGED_CODE();
switch(diskData->FailurePredictionCapability)
{
case FailurePredictionSmart:
{
PUCHAR outBuffer;
ULONG outBufferSize;
PSENDCMDOUTPARAMS cmdOutParameters;
outBufferSize = sizeof(SRB_IO_CONTROL) + max( sizeof(SENDCMDINPARAMS), sizeof(SENDCMDOUTPARAMS) - 1 + READ_ATTRIBUTE_BUFFER_SIZE );
outBuffer = ExAllocatePoolWithTag(NonPagedPoolNx,
outBufferSize,
DISK_TAG_SMART);
if (outBuffer != NULL)
{
status = DiskReadSmartData(FdoExtension,
(PSRB_IO_CONTROL)outBuffer,
&outBufferSize);
if (NT_SUCCESS(status))
{
cmdOutParameters = (PSENDCMDOUTPARAMS)(outBuffer +
sizeof(SRB_IO_CONTROL));
DiskSmartData->Length = READ_ATTRIBUTE_BUFFER_SIZE;
RtlCopyMemory(DiskSmartData->VendorSpecific,
cmdOutParameters->bBuffer,
min(READ_ATTRIBUTE_BUFFER_SIZE, sizeof(DiskSmartData->VendorSpecific)));
}
FREE_POOL(outBuffer);
} else {
status = STATUS_INSUFFICIENT_RESOURCES;
}
break;
}
case FailurePredictionSense:
{
DiskSmartData->Length = sizeof(ULONG);
*((PULONG)DiskSmartData->VendorSpecific) = FdoExtension->FailureReason;
status = STATUS_SUCCESS;
break;
}
case FailurePredictionIoctl:
case FailurePredictionNone:
default:
{
status = STATUS_INVALID_DEVICE_REQUEST;
break;
}
}
return status;
}
NTSTATUS
DiskReadFailurePredictThresholds(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
PSTORAGE_FAILURE_PREDICT_THRESHOLDS DiskSmartThresholds
)
/*++
Routine Description:
Obtains current failure prediction thresholds. Not available for
FAILURE_PREDICT_SENSE types.
Arguments:
FdoExtension
DiskSmartData
Return Value:
NT Status
--*/
{
PCOMMON_DEVICE_EXTENSION commonExtension = (PCOMMON_DEVICE_EXTENSION)FdoExtension;
PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
NTSTATUS status;
PAGED_CODE();
switch(diskData->FailurePredictionCapability)
{
case FailurePredictionSmart:
{
PUCHAR outBuffer;
PSENDCMDOUTPARAMS cmdOutParameters;
ULONG outBufferSize;
outBufferSize = sizeof(SRB_IO_CONTROL) + max( sizeof(SENDCMDINPARAMS), sizeof(SENDCMDOUTPARAMS) - 1 + READ_THRESHOLD_BUFFER_SIZE );
outBuffer = ExAllocatePoolWithTag(NonPagedPoolNx,
outBufferSize,
DISK_TAG_SMART);
if (outBuffer != NULL)
{
status = DiskReadSmartThresholds(FdoExtension,
(PSRB_IO_CONTROL)outBuffer,
&outBufferSize);
if (NT_SUCCESS(status))
{
cmdOutParameters = (PSENDCMDOUTPARAMS)(outBuffer +
sizeof(SRB_IO_CONTROL));
RtlCopyMemory(DiskSmartThresholds->VendorSpecific,
cmdOutParameters->bBuffer,
min(READ_THRESHOLD_BUFFER_SIZE, sizeof(DiskSmartThresholds->VendorSpecific)));
}
FREE_POOL(outBuffer);
} else {
status = STATUS_INSUFFICIENT_RESOURCES;
}
break;
}
case FailurePredictionSense:
case FailurePredictionIoctl:
case FailurePredictionNone:
default:
{
status = STATUS_INVALID_DEVICE_REQUEST;
break;
}
}
return status;
}
VOID
DiskReregWorker(
IN PDEVICE_OBJECT DevObject,
IN PVOID Context
)
{
PDISKREREGREQUEST reregRequest;
NTSTATUS status;
PDEVICE_OBJECT deviceObject;
PIRP irp;
PAGED_CODE();
UNREFERENCED_PARAMETER(DevObject);
NT_ASSERT(Context != NULL);
_Analysis_assume_(Context != NULL);
do
{
reregRequest = (PDISKREREGREQUEST)ExInterlockedPopEntryList(
&DiskReregHead,
&DiskReregSpinlock);
if (reregRequest != NULL)
{
deviceObject = reregRequest->DeviceObject;
irp = reregRequest->Irp;
status = IoWMIRegistrationControl(deviceObject,
WMIREG_ACTION_UPDATE_GUIDS);
//
// Release remove lock and free irp, now that we are done
// processing this
//
#pragma prefast(suppress:28107,"Remove lock had been acquired before queuing the work item.")
ClassReleaseRemoveLock(deviceObject, irp);
IoFreeMdl(irp->MdlAddress);
IoFreeIrp(irp);
FREE_POOL(reregRequest);
} else {
NT_ASSERTMSG("Disk Re-registration request list should not be empty", FALSE);
status = STATUS_INTERNAL_ERROR;
}
if (!NT_SUCCESS(status))
{
TracePrint((TRACE_LEVEL_ERROR, TRACE_FLAG_GENERAL, "DiskReregWorker: Reregistration failed %x\n",
status));
}
} while (InterlockedDecrement(&DiskReregWorkItems));
IoFreeWorkItem((PIO_WORKITEM)Context);
}
NTSTATUS
DiskInitializeReregistration(
VOID
)
{
PAGED_CODE();
//
// Initialize the spinlock used to manage the
// list of disks reregistering their guids
//
KeInitializeSpinLock(&DiskReregSpinlock);
return(STATUS_SUCCESS);
}
NTSTATUS
DiskPostReregisterRequest(
PDEVICE_OBJECT DeviceObject,
PIRP Irp
)
{
PDISKREREGREQUEST reregRequest;
PIO_WORKITEM workItem;
NTSTATUS status;
workItem = IoAllocateWorkItem(DeviceObject);
if (!workItem) {
return STATUS_INSUFFICIENT_RESOURCES;
}
reregRequest = ExAllocatePoolWithTag(NonPagedPoolNx,
sizeof(DISKREREGREQUEST),
DISK_TAG_SMART);
if (reregRequest != NULL)
{
//
// add the disk that needs reregistration to the stack of disks
// to reregister. If the list is transitioning from empty to
// non empty then also kick off the work item so that the
// reregistration worker can do the reregister.
//
reregRequest->DeviceObject = DeviceObject;
reregRequest->Irp = Irp;
ExInterlockedPushEntryList(
&DiskReregHead,
&reregRequest->Next,
&DiskReregSpinlock);
if (InterlockedIncrement(&DiskReregWorkItems) == 1)
{
//
// There is no worker routine running, queue this one.
// When the work item runs, it will process the reregistration
// list.
//
IoQueueWorkItem(workItem,
DiskReregWorker,
DelayedWorkQueue,
workItem);
} else {
//
// There is a worker routine already running, so we
// can free this unused work item.
//
IoFreeWorkItem(workItem);
}
status = STATUS_SUCCESS;
} else {
IoFreeWorkItem(workItem);
TracePrint((TRACE_LEVEL_ERROR, TRACE_FLAG_GENERAL, "DiskPostReregisterRequest: could not allocate reregRequest for %p\n",
DeviceObject));
status = STATUS_INSUFFICIENT_RESOURCES;
}
return(status);
}
NTSTATUS
DiskInfoExceptionComplete(
PDEVICE_OBJECT DeviceObject,
PIRP Irp,
PVOID Context
)
{
PCOMMON_DEVICE_EXTENSION commonExtension = DeviceObject->DeviceExtension;
PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation(Irp);
PIO_STACK_LOCATION nextIrpStack = IoGetNextIrpStackLocation(Irp);
PSCSI_REQUEST_BLOCK srb = Context;
NTSTATUS status;
BOOLEAN retry;
ULONG retryInterval;
ULONG srbStatus;
BOOLEAN freeLockAndIrp = TRUE;
PVOID originalSenseInfoBuffer = irpStack->Parameters.Others.Argument3;
PSTORAGE_REQUEST_BLOCK srbEx = NULL;
PVOID dataBuffer = NULL;
ULONG dataLength = 0;
PVOID senseBuffer = NULL;
UCHAR cdbLength8 = 0;
ULONG cdbLength32 = 0;
UCHAR senseBufferLength = 0;
srbStatus = SRB_STATUS(srb->SrbStatus);
if (srb->Function == SRB_FUNCTION_STORAGE_REQUEST_BLOCK) {
srbEx = (PSTORAGE_REQUEST_BLOCK)srb;
dataBuffer = srbEx->DataBuffer;
dataLength = srbEx->DataTransferLength;
if ((srbEx->SrbFunction == SRB_FUNCTION_EXECUTE_SCSI) &&
(srbEx->NumSrbExData > 0)) {
(void)GetSrbScsiData(srbEx, &cdbLength8, &cdbLength32, NULL, &senseBuffer, &senseBufferLength);
}
} else {
dataBuffer = srb->DataBuffer;
dataLength = srb->DataTransferLength;
senseBuffer = srb->SenseInfoBuffer;
}
//
// Check SRB status for success of completing request.
// SRB_STATUS_DATA_OVERRUN also indicates success.
//
if ((srbStatus != SRB_STATUS_SUCCESS) &&
(srbStatus != SRB_STATUS_DATA_OVERRUN))
{
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_GENERAL, "DiskInfoExceptionComplete: IRP %p, SRB %p\n", Irp, srb));
if (TEST_FLAG(srb->SrbStatus, SRB_STATUS_QUEUE_FROZEN))
{
ClassReleaseQueue(DeviceObject);
}
retry = ClassInterpretSenseInfo(
DeviceObject,
srb,
irpStack->MajorFunction,
0,
MAXIMUM_RETRIES -
((ULONG)(ULONG_PTR)irpStack->Parameters.Others.Argument4),
&status,
&retryInterval);
//
// If the status is verified required and the this request
// should bypass verify required then retry the request.
//
if (TEST_FLAG(irpStack->Flags, SL_OVERRIDE_VERIFY_VOLUME) &&
status == STATUS_VERIFY_REQUIRED)
{
status = STATUS_IO_DEVICE_ERROR;
retry = TRUE;
}
retry = retry && irpStack->Parameters.Others.Argument4;
irpStack->Parameters.Others.Argument4 = (PVOID)((ULONG_PTR)irpStack->Parameters.Others.Argument4 - 1);
if (retry)
{
//
// Retry request.
//
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_GENERAL, "DiskInfoExceptionComplete: Retry request %p\n", Irp));
NT_ASSERT(dataBuffer == MmGetMdlVirtualAddress(Irp->MdlAddress));
if (srb->Function == SRB_FUNCTION_STORAGE_REQUEST_BLOCK) {
//
// Reset byte count of transfer in SRB Extension.
//
srbEx->DataTransferLength = Irp->MdlAddress->ByteCount;
//
// Zero SRB statuses.
//
srbEx->SrbStatus = 0;
if ((srbEx->SrbFunction == SRB_FUNCTION_EXECUTE_SCSI) &&
(srbEx->NumSrbExData > 0)) {
SetSrbScsiData(srbEx, cdbLength8, cdbLength32, 0, senseBuffer, senseBufferLength);
}
//
// Set the no disconnect flag, disable synchronous data transfers and
// disable tagged queuing. This fixes some errors.
//
SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_DISABLE_DISCONNECT);
SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_DISABLE_SYNCH_TRANSFER);
CLEAR_FLAG(srbEx->SrbFlags, SRB_FLAGS_QUEUE_ACTION_ENABLE);
srbEx->RequestAttribute = SRB_SIMPLE_TAG_REQUEST;
srbEx->RequestTag = SP_UNTAGGED;
} else {
//
// Reset byte count of transfer in SRB Extension.
//
srb->DataTransferLength = Irp->MdlAddress->ByteCount;
//
// Zero SRB statuses.
//
srb->SrbStatus = srb->ScsiStatus = 0;
//
// Set the no disconnect flag, disable synchronous data transfers and
// disable tagged queuing. This fixes some errors.
//
SET_FLAG(srb->SrbFlags, SRB_FLAGS_DISABLE_DISCONNECT);
SET_FLAG(srb->SrbFlags, SRB_FLAGS_DISABLE_SYNCH_TRANSFER);
CLEAR_FLAG(srb->SrbFlags, SRB_FLAGS_QUEUE_ACTION_ENABLE);
srb->QueueAction = SRB_SIMPLE_TAG_REQUEST;
srb->QueueTag = SP_UNTAGGED;
}
//
// Set up major SCSI function.
//
nextIrpStack->MajorFunction = IRP_MJ_SCSI;
//
// Save SRB address in next stack for port driver.
//
nextIrpStack->Parameters.Scsi.Srb = srb;
IoSetCompletionRoutine(Irp,
DiskInfoExceptionComplete,
srb,
TRUE, TRUE, TRUE);
(VOID)IoCallDriver(commonExtension->LowerDeviceObject, Irp);
return STATUS_MORE_PROCESSING_REQUIRED;
}
} else {
//
// Get the results from the mode sense
//
PMODE_INFO_EXCEPTIONS pageData;
PMODE_PARAMETER_HEADER modeData;
ULONG modeDataLength;
modeData = dataBuffer;
modeDataLength = dataLength;
pageData = ClassFindModePage((PCHAR)modeData,
modeDataLength,
MODE_PAGE_FAULT_REPORTING,
TRUE);
if (pageData != NULL)
{
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskInfoExceptionComplete: %p supports SMART\n",
DeviceObject));
diskData->ScsiInfoExceptionsSupported = TRUE;
//
// The DEXCPT bit must be 0 and the MRIE field must be valid.
//
if (pageData->Dexcpt == 0 &&
pageData->ReportMethod >= 2 &&
pageData->ReportMethod <= 6)
{
diskData->FailurePredictionCapability = FailurePredictionSense;
diskData->FailurePredictionEnabled = TRUE;
status = DiskPostReregisterRequest(DeviceObject, Irp);
if (NT_SUCCESS(status))
{
//
// Make sure we won't free the remove lock and the irp
// since we need to keep these until after the work
// item has completed running
//
freeLockAndIrp = FALSE;
}
} else {
TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskInfoExceptionComplete: %p is not enabled for SMART\n",
DeviceObject));
}
} else {
TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskInfoExceptionComplete: %p does not supports SMART\n",
DeviceObject));
}
//
// Set status for successful request
//
status = STATUS_SUCCESS;
} // end if (SRB_STATUS(srb->SrbStatus) == SRB_STATUS_SUCCESS)
//
// Free the srb
//
if (senseBuffer != originalSenseInfoBuffer)
{
//
// Free the original sense info buffer in case the port driver has overwritten it
//
FREE_POOL(originalSenseInfoBuffer);
}
FREE_POOL(senseBuffer);
FREE_POOL(dataBuffer);
FREE_POOL(srb);
if (freeLockAndIrp)
{
//
// Set status in completing IRP.
//
Irp->IoStatus.Status = status;
//
// If pending has be returned for this irp then mark the current stack as
// pending.
//
if (Irp->PendingReturned) {
IoMarkIrpPending(Irp);
}
ClassReleaseRemoveLock(DeviceObject, Irp);
IoFreeMdl(Irp->MdlAddress);
IoFreeIrp(Irp);
}
return(STATUS_MORE_PROCESSING_REQUIRED);
}
NTSTATUS
DiskInfoExceptionCheck(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension
)
{
PUCHAR modeData;
PSCSI_REQUEST_BLOCK srb;
PCDB cdb;
PIRP irp;
PIO_STACK_LOCATION irpStack;
PVOID senseInfoBuffer = NULL;
UCHAR senseInfoBufferLength = 0;
ULONG isRemoved;
ULONG srbSize;
PSTORAGE_REQUEST_BLOCK srbEx = NULL;
PSTOR_ADDR_BTL8 storAddrBtl8 = NULL;
PSRBEX_DATA_SCSI_CDB16 srbExDataCdb16 = NULL;
modeData = ExAllocatePoolWithTag(NonPagedPoolNxCacheAligned,
MODE_DATA_SIZE,
DISK_TAG_INFO_EXCEPTION);
if (modeData == NULL)
{
TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskInfoExceptionCheck: Can't allocate mode data "
"buffer\n"));
return(STATUS_INSUFFICIENT_RESOURCES);
}
if (FdoExtension->AdapterDescriptor->SrbType == SRB_TYPE_STORAGE_REQUEST_BLOCK) {
srbSize = CLASS_SRBEX_SCSI_CDB16_BUFFER_SIZE;
} else {
srbSize = SCSI_REQUEST_BLOCK_SIZE;
}
srb = ExAllocatePoolWithTag(NonPagedPoolNx,
srbSize,
DISK_TAG_SRB);
if (srb == NULL)
{
FREE_POOL(modeData);
TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskInfoExceptionCheck: Can't allocate srb "
"buffer\n"));
return(STATUS_INSUFFICIENT_RESOURCES);
}
RtlZeroMemory(srb, srbSize);
//
// Sense buffer is in aligned nonpaged pool.
//
senseInfoBuffer = ExAllocatePoolWithTag(NonPagedPoolNxCacheAligned,
SENSE_BUFFER_SIZE_EX,
'7CcS');
if (senseInfoBuffer == NULL)
{
FREE_POOL(srb);
FREE_POOL(modeData);
TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskInfoExceptionCheck: Can't allocate request sense "
"buffer\n"));
return(STATUS_INSUFFICIENT_RESOURCES);
}
senseInfoBufferLength = SENSE_BUFFER_SIZE_EX;
//
// Build device I/O control request with METHOD_NEITHER data transfer.
// We'll queue a completion routine to cleanup the MDL's and such ourself.
//
irp = IoAllocateIrp(
(CCHAR) (FdoExtension->CommonExtension.LowerDeviceObject->StackSize + 1),
FALSE);
if (irp == NULL)
{
FREE_POOL(senseInfoBuffer);
FREE_POOL(srb);
FREE_POOL(modeData);
TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskInfoExceptionCheck: Can't allocate Irp\n"));
return(STATUS_INSUFFICIENT_RESOURCES);
}
isRemoved = ClassAcquireRemoveLock(FdoExtension->DeviceObject, irp);
if (isRemoved)
{
ClassReleaseRemoveLock(FdoExtension->DeviceObject, irp);
IoFreeIrp(irp);
FREE_POOL(senseInfoBuffer);
FREE_POOL(srb);
FREE_POOL(modeData);
TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskInfoExceptionCheck: RemoveLock says isRemoved\n"));
return(STATUS_DEVICE_DOES_NOT_EXIST);
}
//
// Get next stack location.
//
IoSetNextIrpStackLocation(irp);
irpStack = IoGetCurrentIrpStackLocation(irp);
irpStack->DeviceObject = FdoExtension->DeviceObject;
//
// Save retry count in current Irp stack.
//
irpStack->Parameters.Others.Argument4 = (PVOID)MAXIMUM_RETRIES;
//
// Save allocated sense info buffer in case the port driver overwrites it
//
irpStack->Parameters.Others.Argument3 = senseInfoBuffer;
irpStack = IoGetNextIrpStackLocation(irp);
//
// Set up SRB for execute scsi request. Save SRB address in next stack
// for the port driver.
//
irpStack->MajorFunction = IRP_MJ_SCSI;
irpStack->Parameters.Scsi.Srb = srb;
IoSetCompletionRoutine(irp,
DiskInfoExceptionComplete,
srb,
TRUE,
TRUE,
TRUE);
irp->MdlAddress = IoAllocateMdl( modeData,
MODE_DATA_SIZE,
FALSE,
FALSE,
irp );
if (irp->MdlAddress == NULL)
{
ClassReleaseRemoveLock(FdoExtension->DeviceObject, irp);
FREE_POOL(srb);
FREE_POOL(modeData);
FREE_POOL(senseInfoBuffer);
IoFreeIrp( irp );
TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskINfoExceptionCheck: Can't allocate MDL\n"));
return STATUS_INSUFFICIENT_RESOURCES;
}
MmBuildMdlForNonPagedPool(irp->MdlAddress);
//
// Build the MODE SENSE CDB.
//
if (FdoExtension->AdapterDescriptor->SrbType == SRB_TYPE_STORAGE_REQUEST_BLOCK) {
//
// Set up STORAGE_REQUEST_BLOCK fields
//
srbEx = (PSTORAGE_REQUEST_BLOCK)srb;
srbEx->Length = FIELD_OFFSET(STORAGE_REQUEST_BLOCK, Signature);
srbEx->Function = SRB_FUNCTION_STORAGE_REQUEST_BLOCK;
srbEx->Signature = SRB_SIGNATURE;
srbEx->Version = STORAGE_REQUEST_BLOCK_VERSION_1;
srbEx->SrbLength = srbSize;
srbEx->SrbFunction = SRB_FUNCTION_EXECUTE_SCSI;
srbEx->RequestPriority = IoGetIoPriorityHint(irp);
srbEx->AddressOffset = sizeof(STORAGE_REQUEST_BLOCK);
srbEx->NumSrbExData = 1;
// Set timeout value from device extension.
srbEx->TimeOutValue = FdoExtension->TimeOutValue;
// Set the transfer length.
srbEx->DataTransferLength = MODE_DATA_SIZE;
srbEx->DataBuffer = modeData;
srbEx->SrbFlags = FdoExtension->SrbFlags;
SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_DATA_IN);
//
// Disable synchronous transfer for these requests.
//
SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_DISABLE_SYNCH_TRANSFER);
//
// Don't freeze the queue on an error
//
SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_NO_QUEUE_FREEZE);
srbEx->RequestAttribute = SRB_SIMPLE_TAG_REQUEST;
srbEx->RequestTag = SP_UNTAGGED;
// Set up IRP Address.
srbEx->OriginalRequest = irp;
//
// Set up address fields
//
storAddrBtl8 = (PSTOR_ADDR_BTL8) ((PUCHAR)srbEx + srbEx->AddressOffset);
storAddrBtl8->Type = STOR_ADDRESS_TYPE_BTL8;
storAddrBtl8->AddressLength = STOR_ADDR_BTL8_ADDRESS_LENGTH;
//
// Set up SCSI SRB extended data fields
//
srbEx->SrbExDataOffset[0] = sizeof(STORAGE_REQUEST_BLOCK) +
sizeof(STOR_ADDR_BTL8);
if ((srbEx->SrbExDataOffset[0] + sizeof(SRBEX_DATA_SCSI_CDB16)) <= srbEx->SrbLength) {
srbExDataCdb16 = (PSRBEX_DATA_SCSI_CDB16)((PUCHAR)srbEx + srbEx->SrbExDataOffset[0]);
srbExDataCdb16->Type = SrbExDataTypeScsiCdb16;
srbExDataCdb16->Length = SRBEX_DATA_SCSI_CDB16_LENGTH;
srbExDataCdb16->CdbLength = 6;
// Enable auto request sense.
srbExDataCdb16->SenseInfoBufferLength = senseInfoBufferLength;
srbExDataCdb16->SenseInfoBuffer = senseInfoBuffer;
cdb = (PCDB)srbExDataCdb16->Cdb;
} else {
// Should not happen
NT_ASSERT(FALSE);
ClassReleaseRemoveLock(FdoExtension->DeviceObject, irp);
FREE_POOL(srb);
FREE_POOL(modeData);
FREE_POOL(senseInfoBuffer);
IoFreeIrp( irp );
TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskINfoExceptionCheck: Insufficient extended SRB size\n"));
return STATUS_INTERNAL_ERROR;
}
} else {
//
// Write length to SRB.
//
srb->Length = SCSI_REQUEST_BLOCK_SIZE;
//
// Set SCSI bus address.
//
srb->Function = SRB_FUNCTION_EXECUTE_SCSI;
//
// Enable auto request sense.
//
srb->SenseInfoBufferLength = senseInfoBufferLength;
srb->SenseInfoBuffer = senseInfoBuffer;
//
// Set timeout value from device extension.
//
srb->TimeOutValue = FdoExtension->TimeOutValue;
//
// Set the transfer length.
//
srb->DataTransferLength = MODE_DATA_SIZE;
srb->DataBuffer = modeData;
srb->SrbFlags = FdoExtension->SrbFlags;
SET_FLAG(srb->SrbFlags, SRB_FLAGS_DATA_IN);
//
// Disable synchronous transfer for these requests.
//
SET_FLAG(srb->SrbFlags, SRB_FLAGS_DISABLE_SYNCH_TRANSFER);
//
// Don't freeze the queue on an error
//
SET_FLAG(srb->SrbFlags, SRB_FLAGS_NO_QUEUE_FREEZE);
srb->QueueAction = SRB_SIMPLE_TAG_REQUEST;
srb->QueueTag = SP_UNTAGGED;
//
// Set up IRP Address.
//
srb->OriginalRequest = irp;
srb->CdbLength = 6;
cdb = (PCDB)srb->Cdb;
}
cdb->MODE_SENSE.OperationCode = SCSIOP_MODE_SENSE;
cdb->MODE_SENSE.PageCode = MODE_PAGE_FAULT_REPORTING;
cdb->MODE_SENSE.AllocationLength = MODE_DATA_SIZE;
//
// Call the port driver with the request and wait for it to complete.
//
IoMarkIrpPending(irp);
IoCallDriver(FdoExtension->CommonExtension.LowerDeviceObject,
irp);
return(STATUS_PENDING);
}
NTSTATUS
DiskDetectFailurePrediction(
PFUNCTIONAL_DEVICE_EXTENSION FdoExtension,
PFAILURE_PREDICTION_METHOD FailurePredictCapability,
BOOLEAN ScsiAddressAvailable
)
/*++
Routine Description:
Detect if device has any failure prediction capabilities. First we
check for IDE SMART capability. This is done by sending the drive an
IDENTIFY command and checking if the SMART command set bit is set.
Next we check if SCSI SMART (aka Information Exception Control Page,
X3T10/94-190 Rev 4). This is done by querying for the Information
Exception mode page.
Lastly we check if the device has IOCTL failure prediction. This mechanism
a filter driver implements IOCTL_STORAGE_PREDICT_FAILURE and will respond
with the information in the IOCTL. We do this by sending the ioctl and
if the status returned is STATUS_SUCCESS we assume that it is supported.
Arguments:
FdoExtension
*FailurePredictCapability
ScsiAddressAvailable TRUE if there is a valid SCSI_ADDRESS available
for this device, FALSE otherwise.
If FALSE we do not allow SMART IOCTLs (FailurePredictionSmart capability)
which require a valid SCSI_ADDRESS. The other capabilities
<FailurePredictionIoctl, FailurePredictionSense) do not requere
SCSI_ADDRESS so we'll still try to initialize them.
Return Value:
NT Status
--*/
{
PCOMMON_DEVICE_EXTENSION commonExtension = (PCOMMON_DEVICE_EXTENSION)FdoExtension;
PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
BOOLEAN supportFP;
NTSTATUS status;
STORAGE_PREDICT_FAILURE checkFailure;
STORAGE_FAILURE_PREDICT_STATUS diskSmartStatus;
PAGED_CODE();
//
// Assume no failure predict mechanisms
//
*FailurePredictCapability = FailurePredictionNone;
//
// See if this is an IDE drive that supports SMART. If so enable SMART
// and then ensure that it suports the SMART READ STATUS command
//
if (ScsiAddressAvailable)
{
DiskGetIdentifyInfo(FdoExtension, &supportFP);
if (supportFP)
{
status = DiskEnableSmart(FdoExtension);
if (NT_SUCCESS(status))
{
*FailurePredictCapability = FailurePredictionSmart;
diskData->FailurePredictionEnabled = TRUE;
status = DiskReadFailurePredictStatus(FdoExtension,
&diskSmartStatus);
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: Device %p %s IDE SMART\n",
FdoExtension->DeviceObject,
NT_SUCCESS(status) ? "does" : "does not"));
if (!NT_SUCCESS(status))
{
*FailurePredictCapability = FailurePredictionNone;
diskData->FailurePredictionEnabled = FALSE;
}
}
return(status);
}
}
//
// See if there is a a filter driver to intercept
// IOCTL_STORAGE_PREDICT_FAILURE
//
status = DiskSendFailurePredictIoctl(FdoExtension,
&checkFailure);
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: Device %p %s IOCTL_STORAGE_FAILURE_PREDICT\n",
FdoExtension->DeviceObject,
NT_SUCCESS(status) ? "does" : "does not"));
if (NT_SUCCESS(status))
{
*FailurePredictCapability = FailurePredictionIoctl;
diskData->FailurePredictionEnabled = TRUE;
if (checkFailure.PredictFailure)
{
checkFailure.PredictFailure = 512;
ClassNotifyFailurePredicted(FdoExtension,
(PUCHAR)&checkFailure,
sizeof(checkFailure),
(BOOLEAN)(FdoExtension->FailurePredicted == FALSE),
0x11,
diskData->ScsiAddress.PathId,
diskData->ScsiAddress.TargetId,
diskData->ScsiAddress.Lun);
FdoExtension->FailurePredicted = TRUE;
}
return(status);
}
//
// Finally we assume it will not be a scsi smart drive. but
// we'll also send off an asynchronous mode sense so that if
// it is SMART we'll reregister the device object
//
*FailurePredictCapability = FailurePredictionNone;
DiskInfoExceptionCheck(FdoExtension);
return(STATUS_SUCCESS);
}
NTSTATUS
DiskWmiFunctionControl(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN ULONG GuidIndex,
IN CLASSENABLEDISABLEFUNCTION Function,
IN BOOLEAN Enable
)
/*++
Routine Description:
This routine is a callback into the driver to enabled or disable event
generation or data block collection. A device should only expect a
single enable when the first event or data consumer enables events or
data collection and a single disable when the last event or data
consumer disables events or data collection. Data blocks will only
receive collection enable/disable if they were registered as requiring
it.
When NT boots, failure prediction is not automatically enabled, although
it may have been persistantly enabled on a previous boot. Polling is also
not automatically enabled. When the first data block that accesses SMART
such as SmartStatusGuid, SmartDataGuid, SmartPerformFunction, or
SmartEventGuid is accessed then SMART is automatically enabled in the
hardware. Polling is enabled when SmartEventGuid is enabled and disabled
when it is disabled. Hardware SMART is only disabled when the DisableSmart
method is called. Polling is also disabled when this is called regardless
of the status of the other guids or events.
Arguments:
DeviceObject is the device whose data block is being queried
GuidIndex is the index into the list of guids provided when the
device registered
Function specifies which functionality is being enabled or disabled
Enable is TRUE then the function is being enabled else disabled
Return Value:
status
--*/
{
NTSTATUS status = STATUS_SUCCESS;
PFUNCTIONAL_DEVICE_EXTENSION fdoExtension = DeviceObject->DeviceExtension;
PAGED_CODE();
if ((Function == DataBlockCollection) && Enable)
{
if ((GuidIndex == SmartStatusGuid) ||
(GuidIndex == SmartDataGuid) ||
(GuidIndex == SmartThresholdsGuid) ||
(GuidIndex == SmartPerformFunction))
{
status = DiskEnableDisableFailurePrediction(fdoExtension,
TRUE);
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DeviceObject %p, Irp %p Enable -> %lx\n",
DeviceObject,
Irp,
status));
} else {
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DeviceObject %p, Irp %p, GuidIndex %d %s for Collection\n",
DeviceObject, Irp,
GuidIndex,
Enable ? "Enabled" : "Disabled"));
}
} else if (Function == EventGeneration) {
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DeviceObject %p, Irp %p, GuidIndex %d %s for Event Generation\n",
DeviceObject, Irp,
GuidIndex,
Enable ? "Enabled" : "Disabled"));
if ((GuidIndex == SmartEventGuid) && Enable)
{
status = DiskEnableDisableFailurePredictPolling(fdoExtension,
Enable,
0);
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DeviceObject %p, Irp %p %s -> %lx\n",
DeviceObject,
Irp,
Enable ? "DiskEnableSmartPolling" : "DiskDisableSmartPolling",
status));
}
#if DBG
} else {
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DeviceObject %p, Irp %p, GuidIndex %d %s for function %d\n",
DeviceObject, Irp,
GuidIndex,
Enable ? "Enabled" : "Disabled",
Function));
#endif
}
status = ClassWmiCompleteRequest(DeviceObject,
Irp,
status,
0,
IO_NO_INCREMENT);
return status;
}
NTSTATUS
DiskFdoQueryWmiRegInfo(
IN PDEVICE_OBJECT DeviceObject,
OUT ULONG *RegFlags,
OUT PUNICODE_STRING InstanceName
)
/*++
Routine Description:
This routine is a callback into the driver to retrieve the list of
guids or data blocks that the driver wants to register with WMI. This
routine may not pend or block. Driver should NOT call
ClassWmiCompleteRequest.
Arguments:
DeviceObject is the device whose data block is being queried
*RegFlags returns with a set of flags that describe the guids being
registered for this device. If the device wants enable and disable
collection callbacks before receiving queries for the registered
guids then it should return the WMIREG_FLAG_EXPENSIVE flag. Also the
returned flags may specify WMIREG_FLAG_INSTANCE_PDO in which case
the instance name is determined from the PDO associated with the
device object. Note that the PDO must have an associated devnode. If
WMIREG_FLAG_INSTANCE_PDO is not set then Name must return a unique
name for the device.
InstanceName returns with the instance name for the guids if
WMIREG_FLAG_INSTANCE_PDO is not set in the returned *RegFlags. The
caller will call ExFreePool with the buffer returned.
Return Value:
status
--*/
{
PCOMMON_DEVICE_EXTENSION commonExtension = DeviceObject->DeviceExtension;
PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
PAGED_CODE();
UNREFERENCED_PARAMETER(InstanceName);
SET_FLAG(DiskWmiFdoGuidList[SmartThresholdsGuid].Flags, WMIREG_FLAG_REMOVE_GUID);
SET_FLAG(DiskWmiFdoGuidList[ScsiInfoExceptionsGuid].Flags, WMIREG_FLAG_REMOVE_GUID);
switch (diskData->FailurePredictionCapability)
{
case FailurePredictionSmart:
{
CLEAR_FLAG(DiskWmiFdoGuidList[SmartThresholdsGuid].Flags, WMIREG_FLAG_REMOVE_GUID);
//
// Fall Through
//
}
case FailurePredictionIoctl:
{
CLEAR_FLAG(DiskWmiFdoGuidList[SmartStatusGuid].Flags, WMIREG_FLAG_REMOVE_GUID);
CLEAR_FLAG(DiskWmiFdoGuidList[SmartDataGuid].Flags, WMIREG_FLAG_REMOVE_GUID);
CLEAR_FLAG(DiskWmiFdoGuidList[SmartEventGuid].Flags, WMIREG_FLAG_REMOVE_GUID);
CLEAR_FLAG(DiskWmiFdoGuidList[SmartPerformFunction].Flags, WMIREG_FLAG_REMOVE_GUID);
break;
}
case FailurePredictionSense:
{
CLEAR_FLAG(DiskWmiFdoGuidList[SmartStatusGuid].Flags, WMIREG_FLAG_REMOVE_GUID);
CLEAR_FLAG(DiskWmiFdoGuidList[SmartEventGuid].Flags, WMIREG_FLAG_REMOVE_GUID);
CLEAR_FLAG(DiskWmiFdoGuidList[SmartPerformFunction].Flags, WMIREG_FLAG_REMOVE_GUID);
CLEAR_FLAG(DiskWmiFdoGuidList[ScsiInfoExceptionsGuid].Flags, WMIREG_FLAG_REMOVE_GUID);
SET_FLAG (DiskWmiFdoGuidList[SmartDataGuid].Flags, WMIREG_FLAG_REMOVE_GUID);
break;
}
default:
{
SET_FLAG (DiskWmiFdoGuidList[SmartStatusGuid].Flags, WMIREG_FLAG_REMOVE_GUID);
SET_FLAG (DiskWmiFdoGuidList[SmartDataGuid].Flags, WMIREG_FLAG_REMOVE_GUID);
SET_FLAG (DiskWmiFdoGuidList[SmartEventGuid].Flags, WMIREG_FLAG_REMOVE_GUID);
SET_FLAG (DiskWmiFdoGuidList[SmartPerformFunction].Flags, WMIREG_FLAG_REMOVE_GUID);
break;
}
}
//
// Use devnode for FDOs
*RegFlags = WMIREG_FLAG_INSTANCE_PDO;
return STATUS_SUCCESS;
}
NTSTATUS
DiskFdoQueryWmiRegInfoEx(
IN PDEVICE_OBJECT DeviceObject,
OUT ULONG *RegFlags,
OUT PUNICODE_STRING InstanceName,
OUT PUNICODE_STRING MofName
)
/*++
Routine Description:
This routine is a callback into the driver to retrieve the list of
guids or data blocks that the driver wants to register with WMI. This
routine may not pend or block. Driver should NOT call
ClassWmiCompleteRequest.
Arguments:
DeviceObject is the device whose data block is being queried
*RegFlags returns with a set of flags that describe the guids being
registered for this device. If the device wants enable and disable
collection callbacks before receiving queries for the registered
guids then it should return the WMIREG_FLAG_EXPENSIVE flag. Also the
returned flags may specify WMIREG_FLAG_INSTANCE_PDO in which case
the instance name is determined from the PDO associated with the
device object. Note that the PDO must have an associated devnode. If
WMIREG_FLAG_INSTANCE_PDO is not set then Name must return a unique
name for the device.
InstanceName returns with the instance name for the guids if
WMIREG_FLAG_INSTANCE_PDO is not set in the returned *RegFlags. The
caller will call ExFreePool with the buffer returned.
MofName returns initialized with the mof resource name for the
binary mof resource attached to the driver's image file. If the
driver does not have a mof resource then it should leave this
parameter untouched.
Return Value:
status
--*/
{
NTSTATUS status;
UNREFERENCED_PARAMETER(MofName);
status = DiskFdoQueryWmiRegInfo(DeviceObject,
RegFlags,
InstanceName);
//
// Leave MofName alone since disk doesn't have one
//
return(status);
}
NTSTATUS
DiskFdoQueryWmiDataBlock(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN ULONG GuidIndex,
IN ULONG BufferAvail,
OUT PUCHAR Buffer
)
/*++
Routine Description:
This routine is a callback into the driver to query for the contents of
a data block. When the driver has finished filling the data block it
must call ClassWmiCompleteRequest to complete the irp. The driver can
return STATUS_PENDING if the irp cannot be completed immediately.
Arguments:
DeviceObject is the device whose data block is being queried
Irp is the Irp that makes this request
GuidIndex is the index into the list of guids provided when the
device registered
BufferAvail on has the maximum size available to write the data
block.
Buffer on return is filled with the returned data block
Return Value:
status
--*/
{
NTSTATUS status;
PFUNCTIONAL_DEVICE_EXTENSION fdoExtension = DeviceObject->DeviceExtension;
PCOMMON_DEVICE_EXTENSION commonExtension = DeviceObject->DeviceExtension;
PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
ULONG sizeNeeded;
PAGED_CODE();
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskQueryWmiDataBlock, Device %p, Irp %p, GuiIndex %d\n"
" BufferAvail %lx Buffer %p\n",
DeviceObject, Irp,
GuidIndex, BufferAvail, Buffer));
switch (GuidIndex)
{
case DiskGeometryGuid:
{
sizeNeeded = sizeof(DISK_GEOMETRY);
if (BufferAvail >= sizeNeeded)
{
if (DeviceObject->Characteristics & FILE_REMOVABLE_MEDIA)
{
//
// Issue ReadCapacity to update device extension
// with information for current media.
status = DiskReadDriveCapacity(commonExtension->PartitionZeroExtension->DeviceObject);
//
// Note whether the drive is ready.
diskData->ReadyStatus = status;
if (!NT_SUCCESS(status))
{
break;
}
}
//
// Copy drive geometry information from device extension.
RtlMoveMemory(Buffer,
&(fdoExtension->DiskGeometry),
sizeof(DISK_GEOMETRY));
status = STATUS_SUCCESS;
} else {
status = STATUS_BUFFER_TOO_SMALL;
}
break;
}
case SmartStatusGuid:
{
PSTORAGE_FAILURE_PREDICT_STATUS diskSmartStatus;
NT_ASSERT(diskData->FailurePredictionCapability != FailurePredictionNone);
sizeNeeded = sizeof(STORAGE_FAILURE_PREDICT_STATUS);
if (BufferAvail >= sizeNeeded)
{
STORAGE_PREDICT_FAILURE checkFailure;
diskSmartStatus = (PSTORAGE_FAILURE_PREDICT_STATUS)Buffer;
status = DiskSendFailurePredictIoctl(fdoExtension,
&checkFailure);
if (NT_SUCCESS(status))
{
if (diskData->FailurePredictionCapability ==
FailurePredictionSense)
{
diskSmartStatus->Reason = *((PULONG)checkFailure.VendorSpecific);
} else {
diskSmartStatus->Reason = 0; // unknown
}
diskSmartStatus->PredictFailure = (checkFailure.PredictFailure != 0);
}
} else {
status = STATUS_BUFFER_TOO_SMALL;
}
break;
}
case SmartDataGuid:
{
PSTORAGE_FAILURE_PREDICT_DATA diskSmartData;
NT_ASSERT((diskData->FailurePredictionCapability ==
FailurePredictionSmart) ||
(diskData->FailurePredictionCapability ==
FailurePredictionIoctl));
sizeNeeded = sizeof(STORAGE_FAILURE_PREDICT_DATA);
if (BufferAvail >= sizeNeeded)
{
PSTORAGE_PREDICT_FAILURE checkFailure = (PSTORAGE_PREDICT_FAILURE)Buffer;
diskSmartData = (PSTORAGE_FAILURE_PREDICT_DATA)Buffer;
status = DiskSendFailurePredictIoctl(fdoExtension,
checkFailure);
if (NT_SUCCESS(status))
{
diskSmartData->Length = 512;
}
} else {
status = STATUS_BUFFER_TOO_SMALL;
}
break;
}
case SmartThresholdsGuid:
{
PSTORAGE_FAILURE_PREDICT_THRESHOLDS diskSmartThresholds;
NT_ASSERT((diskData->FailurePredictionCapability ==
FailurePredictionSmart));
sizeNeeded = sizeof(STORAGE_FAILURE_PREDICT_THRESHOLDS);
if (BufferAvail >= sizeNeeded)
{
diskSmartThresholds = (PSTORAGE_FAILURE_PREDICT_THRESHOLDS)Buffer;
status = DiskReadFailurePredictThresholds(fdoExtension,
diskSmartThresholds);
} else {
status = STATUS_BUFFER_TOO_SMALL;
}
break;
}
case SmartPerformFunction:
{
sizeNeeded = 0;
status = STATUS_SUCCESS;
break;
}
case ScsiInfoExceptionsGuid:
{
PSTORAGE_SCSI_INFO_EXCEPTIONS infoExceptions;
MODE_INFO_EXCEPTIONS modeInfo;
NT_ASSERT((diskData->FailurePredictionCapability ==
FailurePredictionSense));
sizeNeeded = sizeof(STORAGE_SCSI_INFO_EXCEPTIONS);
if (BufferAvail >= sizeNeeded)
{
infoExceptions = (PSTORAGE_SCSI_INFO_EXCEPTIONS)Buffer;
status = DiskGetInfoExceptionInformation(fdoExtension,
&modeInfo);
if (NT_SUCCESS(status))
{
infoExceptions->PageSavable = modeInfo.PSBit;
infoExceptions->Flags = modeInfo.Flags;
infoExceptions->MRIE = modeInfo.ReportMethod;
infoExceptions->Padding = 0;
REVERSE_BYTES(&infoExceptions->IntervalTimer,
&modeInfo.IntervalTimer);
REVERSE_BYTES(&infoExceptions->ReportCount,
&modeInfo.ReportCount)
}
} else {
status = STATUS_BUFFER_TOO_SMALL;
}
break;
}
default:
{
sizeNeeded = 0;
status = STATUS_WMI_GUID_NOT_FOUND;
}
}
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskQueryWmiDataBlock Device %p, Irp %p returns %lx\n",
DeviceObject, Irp, status));
status = ClassWmiCompleteRequest(DeviceObject,
Irp,
status,
sizeNeeded,
IO_NO_INCREMENT);
return status;
}
NTSTATUS
DiskFdoSetWmiDataBlock(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN ULONG GuidIndex,
IN ULONG BufferSize,
IN PUCHAR Buffer
)
/*++
Routine Description:
This routine is a callback into the driver to query for the contents of
a data block. When the driver has finished filling the data block it
must call ClassWmiCompleteRequest to complete the irp. The driver can
return STATUS_PENDING if the irp cannot be completed immediately.
Arguments:
DeviceObject is the device whose data block is being queried
Irp is the Irp that makes this request
GuidIndex is the index into the list of guids provided when the
device registered
BufferSize has the size of the data block passed
Buffer has the new values for the data block
Return Value:
status
--*/
{
NTSTATUS status;
PFUNCTIONAL_DEVICE_EXTENSION fdoExtension = DeviceObject->DeviceExtension;
PCOMMON_DEVICE_EXTENSION commonExtension = DeviceObject->DeviceExtension;
PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
PAGED_CODE();
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskSetWmiDataBlock, Device %p, Irp %p, GuiIndex %d\n"
" BufferSize %#x Buffer %p\n",
DeviceObject, Irp,
GuidIndex, BufferSize, Buffer));
if (GuidIndex == ScsiInfoExceptionsGuid)
{
PSTORAGE_SCSI_INFO_EXCEPTIONS infoExceptions;
MODE_INFO_EXCEPTIONS modeInfo = {0};
if (BufferSize >= sizeof(STORAGE_SCSI_INFO_EXCEPTIONS))
{
infoExceptions = (PSTORAGE_SCSI_INFO_EXCEPTIONS)Buffer;
modeInfo.PageCode = MODE_PAGE_FAULT_REPORTING;
modeInfo.PageLength = sizeof(MODE_INFO_EXCEPTIONS) - 2;
modeInfo.PSBit = 0;
modeInfo.Flags = infoExceptions->Flags;
modeInfo.ReportMethod = infoExceptions->MRIE;
REVERSE_BYTES(&modeInfo.IntervalTimer[0],
&infoExceptions->IntervalTimer);
REVERSE_BYTES(&modeInfo.ReportCount[0],
&infoExceptions->ReportCount);
if (modeInfo.Perf == 1)
{
diskData->AllowFPPerfHit = FALSE;
} else {
diskData->AllowFPPerfHit = TRUE;
}
status = DiskSetInfoExceptionInformation(fdoExtension,
&modeInfo);
} else {
status = STATUS_INVALID_PARAMETER;
}
} else if (GuidIndex <= SmartThresholdsGuid)
{
status = STATUS_WMI_READ_ONLY;
} else {
status = STATUS_WMI_GUID_NOT_FOUND;
}
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskSetWmiDataBlock Device %p, Irp %p returns %lx\n",
DeviceObject, Irp, status));
status = ClassWmiCompleteRequest(DeviceObject,
Irp,
status,
0,
IO_NO_INCREMENT);
return status;
}
NTSTATUS
DiskFdoSetWmiDataItem(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN ULONG GuidIndex,
IN ULONG DataItemId,
IN ULONG BufferSize,
IN PUCHAR Buffer
)
/*++
Routine Description:
This routine is a callback into the driver to query for the contents of
a data block. When the driver has finished filling the data block it
must call ClassWmiCompleteRequest to complete the irp. The driver can
return STATUS_PENDING if the irp cannot be completed immediately.
Arguments:
DeviceObject is the device whose data block is being queried
Irp is the Irp that makes this request
GuidIndex is the index into the list of guids provided when the
device registered
DataItemId has the id of the data item being set
BufferSize has the size of the data item passed
Buffer has the new values for the data item
Return Value:
status
--*/
{
NTSTATUS status;
PAGED_CODE();
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskSetWmiDataItem, Device %p, Irp %p, GuiIndex %d, DataId %d\n"
" BufferSize %#x Buffer %p\n",
DeviceObject, Irp,
GuidIndex, DataItemId, BufferSize, Buffer));
if (GuidIndex <= SmartThresholdsGuid)
{
status = STATUS_WMI_READ_ONLY;
} else {
status = STATUS_WMI_GUID_NOT_FOUND;
}
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskSetWmiDataItem Device %p, Irp %p returns %lx\n",
DeviceObject, Irp, status));
status = ClassWmiCompleteRequest(DeviceObject,
Irp,
status,
0,
IO_NO_INCREMENT);
return status;
}
NTSTATUS
DiskFdoExecuteWmiMethod(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN ULONG GuidIndex,
IN ULONG MethodId,
IN ULONG InBufferSize,
IN ULONG OutBufferSize,
IN PUCHAR Buffer
)
/*++
Routine Description:
This routine is a callback into the driver to execute a method. When the
driver has finished filling the data block it must call
ClassWmiCompleteRequest to complete the irp. The driver can
return STATUS_PENDING if the irp cannot be completed immediately.
Arguments:
DeviceObject is the device whose data block is being queried
Irp is the Irp that makes this request
GuidIndex is the index into the list of guids provided when the
device registered
MethodId has the id of the method being called
InBufferSize has the size of the data block passed in as the input to
the method.
OutBufferSize on entry has the maximum size available to write the
returned data block.
Buffer is filled with the returned data block
Return Value:
status
--*/
{
PFUNCTIONAL_DEVICE_EXTENSION fdoExtension = DeviceObject->DeviceExtension;
PCOMMON_DEVICE_EXTENSION commonExtension = DeviceObject->DeviceExtension;
PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
ULONG sizeNeeded = 0;
NTSTATUS status;
PAGED_CODE();
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskExecuteWmiMethod, DeviceObject %p, Irp %p, Guid Id %d, MethodId %d\n"
" InBufferSize %#x, OutBufferSize %#x, Buffer %p\n",
DeviceObject, Irp,
GuidIndex, MethodId, InBufferSize, OutBufferSize, Buffer));
switch(GuidIndex)
{
case SmartPerformFunction:
{
NT_ASSERT((diskData->FailurePredictionCapability ==
FailurePredictionSmart) ||
(diskData->FailurePredictionCapability ==
FailurePredictionIoctl) ||
(diskData->FailurePredictionCapability ==
FailurePredictionSense));
switch(MethodId)
{
//
// void AllowPerformanceHit([in] boolean Allow)
//
case AllowDisallowPerformanceHit:
{
BOOLEAN allowPerfHit;
sizeNeeded = 0;
if (InBufferSize >= sizeof(BOOLEAN))
{
status = STATUS_SUCCESS;
allowPerfHit = *((PBOOLEAN)Buffer);
if (diskData->AllowFPPerfHit != allowPerfHit)
{
diskData->AllowFPPerfHit = allowPerfHit;
if (diskData->FailurePredictionCapability ==
FailurePredictionSense)
{
MODE_INFO_EXCEPTIONS modeInfo;
status = DiskGetInfoExceptionInformation(fdoExtension,
&modeInfo);
if (NT_SUCCESS(status))
{
modeInfo.Perf = allowPerfHit ? 0 : 1;
status = DiskSetInfoExceptionInformation(fdoExtension,
&modeInfo);
}
}
else
{
status = STATUS_INVALID_DEVICE_REQUEST;
}
}
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskFdoWmiExecuteMethod: AllowPerformanceHit %x for device %p --> %lx\n",
allowPerfHit,
fdoExtension->DeviceObject,
status));
} else {
status = STATUS_INVALID_PARAMETER;
}
break;
}
//
// void EnableDisableHardwareFailurePrediction([in] boolean Enable)
//
case EnableDisableHardwareFailurePrediction:
{
BOOLEAN enable;
sizeNeeded = 0;
if (InBufferSize >= sizeof(BOOLEAN))
{
status = STATUS_SUCCESS;
enable = *((PBOOLEAN)Buffer);
if (!enable)
{
//
// If we are disabling we need to also disable
// polling
//
DiskEnableDisableFailurePredictPolling(
fdoExtension,
enable,
0);
}
status = DiskEnableDisableFailurePrediction(
fdoExtension,
enable);
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskFdoWmiExecuteMethod: EnableDisableHardwareFailurePrediction: %x for device %p --> %lx\n",
enable,
fdoExtension->DeviceObject,
status));
} else {
status = STATUS_INVALID_PARAMETER;
}
break;
}
//
// void EnableDisableFailurePredictionPolling(
// [in] uint32 Period,
// [in] boolean Enable)
//
case EnableDisableFailurePredictionPolling:
{
BOOLEAN enable;
ULONG period;
sizeNeeded = 0;
if (InBufferSize >= (sizeof(ULONG) + sizeof(BOOLEAN)))
{
period = *((PULONG)Buffer);
Buffer += sizeof(ULONG);
enable = *((PBOOLEAN)Buffer);
status = DiskEnableDisableFailurePredictPolling(
fdoExtension,
enable,
period);
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskFdoWmiExecuteMethod: EnableDisableFailurePredictionPolling: %x %x for device %p --> %lx\n",
enable,
period,
fdoExtension->DeviceObject,
status));
} else {
status = STATUS_INVALID_PARAMETER;
}
break;
}
//
// void GetFailurePredictionCapability([out] uint32 Capability)
//
case GetFailurePredictionCapability:
{
sizeNeeded = sizeof(ULONG);
if (OutBufferSize >= sizeNeeded)
{
status = STATUS_SUCCESS;
*((PFAILURE_PREDICTION_METHOD)Buffer) = diskData->FailurePredictionCapability;
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskFdoWmiExecuteMethod: GetFailurePredictionCapability: %x for device %p --> %lx\n",
*((PFAILURE_PREDICTION_METHOD)Buffer),
fdoExtension->DeviceObject,
status));
} else {
status = STATUS_BUFFER_TOO_SMALL;
}
break;
}
//
// void EnableOfflineDiags([out] boolean Success);
//
case EnableOfflineDiags:
{
sizeNeeded = sizeof(BOOLEAN);
if (OutBufferSize >= sizeNeeded)
{
if (diskData->FailurePredictionCapability ==
FailurePredictionSmart)
{
//
// Initiate or resume offline diagnostics.
// This may cause a loss of performance
// to the disk, but mayincrease the amount
// of disk checking.
//
status = DiskExecuteSmartDiagnostics(fdoExtension,
0);
} else {
status = STATUS_INVALID_DEVICE_REQUEST;
}
*((PBOOLEAN)Buffer) = NT_SUCCESS(status);
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskFdoWmiExecuteMethod: EnableOfflineDiags for device %p --> %lx\n",
fdoExtension->DeviceObject,
status));
} else {
status = STATUS_BUFFER_TOO_SMALL;
}
break;
}
//
// void ReadLogSectors([in] uint8 LogAddress,
// [in] uint8 SectorCount,
// [out] uint32 Length,
// [out, WmiSizeIs("Length")] uint8 LogSectors[]
// );
//
case ReadLogSectors:
{
if (diskData->FailurePredictionCapability ==
FailurePredictionSmart)
{
if (InBufferSize >= sizeof(READ_LOG_SECTORS_IN))
{
PREAD_LOG_SECTORS_IN inParams;
PREAD_LOG_SECTORS_OUT outParams;
ULONG readSize;
inParams = (PREAD_LOG_SECTORS_IN)Buffer;
readSize = inParams->SectorCount * SMART_LOG_SECTOR_SIZE;
sizeNeeded = FIELD_OFFSET(READ_LOG_SECTORS_OUT,
LogSectors) + readSize;
if (OutBufferSize >= sizeNeeded)
{
outParams = (PREAD_LOG_SECTORS_OUT)Buffer;
status = DiskReadSmartLog(fdoExtension,
inParams->SectorCount,
inParams->LogAddress,
outParams->LogSectors);
if (NT_SUCCESS(status))
{
outParams->Length = readSize;
} else {
//
// SMART command failure is
// indicated by successful
// execution, but no data returned
//
outParams->Length = 0;
status = STATUS_SUCCESS;
}
} else {
status = STATUS_BUFFER_TOO_SMALL;
}
} else {
status = STATUS_INVALID_PARAMETER;
}
} else {
status = STATUS_INVALID_DEVICE_REQUEST;
}
break;
}
// void WriteLogSectors([in] uint8 LogAddress,
// [in] uint8 SectorCount,
// [in] uint32 Length,
// [in, WmiSizeIs("Length")] uint8 LogSectors[],
// [out] boolean Success
// );
case WriteLogSectors:
{
if (diskData->FailurePredictionCapability ==
FailurePredictionSmart)
{
if (InBufferSize >= FIELD_OFFSET(WRITE_LOG_SECTORS_IN,
LogSectors))
{
PWRITE_LOG_SECTORS_IN inParams;
PWRITE_LOG_SECTORS_OUT outParams;
ULONG writeSize;
inParams = (PWRITE_LOG_SECTORS_IN)Buffer;
writeSize = inParams->SectorCount * SMART_LOG_SECTOR_SIZE;
if (InBufferSize >= (FIELD_OFFSET(WRITE_LOG_SECTORS_IN,
LogSectors) +
writeSize))
{
sizeNeeded = sizeof(WRITE_LOG_SECTORS_OUT);
if (OutBufferSize >= sizeNeeded)
{
outParams = (PWRITE_LOG_SECTORS_OUT)Buffer;
status = DiskWriteSmartLog(fdoExtension,
inParams->SectorCount,
inParams->LogAddress,
inParams->LogSectors);
if (NT_SUCCESS(status))
{
outParams->Success = TRUE;
} else {
outParams->Success = FALSE;
status = STATUS_SUCCESS;
}
} else {
status = STATUS_BUFFER_TOO_SMALL;
}
} else {
status = STATUS_INVALID_PARAMETER;
}
} else {
status = STATUS_INVALID_PARAMETER;
}
} else {
status = STATUS_INVALID_DEVICE_REQUEST;
}
break;
}
// void ExecuteSelfTest([in] uint8 Subcommand,
// [out,
// Values{"0", "1", "2"},
// ValueMap{"Successful Completion",
// "Captive Mode Required",
// "Unsuccessful Completion"}
// ]
// uint32 ReturnCode);
case ExecuteSelfTest:
{
if (diskData->FailurePredictionCapability ==
FailurePredictionSmart)
{
if (InBufferSize >= sizeof(EXECUTE_SELF_TEST_IN))
{
sizeNeeded = sizeof(EXECUTE_SELF_TEST_OUT);
if (OutBufferSize >= sizeNeeded)
{
PEXECUTE_SELF_TEST_IN inParam;
PEXECUTE_SELF_TEST_OUT outParam;
inParam = (PEXECUTE_SELF_TEST_IN)Buffer;
outParam = (PEXECUTE_SELF_TEST_OUT)Buffer;
if (DiskIsValidSmartSelfTest(inParam->Subcommand))
{
status = DiskExecuteSmartDiagnostics(fdoExtension,
inParam->Subcommand);
if (NT_SUCCESS(status))
{
//
// Return self test executed
// without a problem
//
outParam->ReturnCode = 0;
} else {
//
// Return Self test execution
// failed status
//
outParam->ReturnCode = 2;
status = STATUS_SUCCESS;
}
} else {
//
// If self test subcommand requires
// captive mode then return that
// status
//
outParam->ReturnCode = 1;
status = STATUS_SUCCESS;
}
} else {
status = STATUS_BUFFER_TOO_SMALL;
}
} else {
status = STATUS_INVALID_PARAMETER;
}
} else {
status = STATUS_INVALID_DEVICE_REQUEST;
}
break;
}
default :
{
sizeNeeded = 0;
status = STATUS_WMI_ITEMID_NOT_FOUND;
break;
}
}
break;
}
case DiskGeometryGuid:
case SmartStatusGuid:
case SmartDataGuid:
case SmartEventGuid:
case SmartThresholdsGuid:
case ScsiInfoExceptionsGuid:
{
sizeNeeded = 0;
status = STATUS_INVALID_DEVICE_REQUEST;
break;
}
default:
{
sizeNeeded = 0;
status = STATUS_WMI_GUID_NOT_FOUND;
}
}
TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskExecuteMethod Device %p, Irp %p returns %lx\n",
DeviceObject, Irp, status));
status = ClassWmiCompleteRequest(DeviceObject,
Irp,
status,
sizeNeeded,
IO_NO_INCREMENT);
return status;
}
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