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windows-server-2003/drivers/storage/ide/atapi/ide.c

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/*++
Copyright (C) 1997-99 Microsoft Corporation
Module Name:
ide.c
Abstract:
This contain DriverEntry and utilities routines
Author:
Joe Dai (joedai)
Environment:
kernel mode only
Notes:
Revision History:
--*/
#include "ideport.h"
#include <initguid.h>
#include <idedump.h>
#ifdef ALLOC_PRAGMA
#pragma alloc_text(INIT, DriverEntry)
#pragma alloc_text(PAGE, IdePortNoSupportIrp)
#pragma alloc_text(PAGE, IdePortPassDownToNextDriver)
#pragma alloc_text(PAGE, IdePortStatusSuccessAndPassDownToNextDriver)
#pragma alloc_text(PAGE, IdePortDispatchPnp)
#pragma alloc_text(PAGE, IdePortDispatchSystemControl)
#pragma alloc_text(PAGE, IdePortOkToDetectLegacy)
#pragma alloc_text(PAGE, IdePortOpenServiceSubKey)
#pragma alloc_text(PAGE, IdePortCloseServiceSubKey)
#pragma alloc_text(PAGE, IdePortParseDeviceParameters)
#pragma alloc_text(PAGE, IdePortGetDeviceTypeString)
#pragma alloc_text(PAGE, IdePortGetCompatibleIdString)
#pragma alloc_text(PAGE, IdePortGetPeripheralIdString)
#pragma alloc_text(PAGE, IdePortUnload)
#pragma alloc_text(PAGE, IdePortSearchDeviceInRegMultiSzList)
#pragma alloc_text(PAGE, IdePortSyncSendIrp)
#pragma alloc_text(PAGE, IdePortInSetup)
#pragma alloc_text(NONPAGE, IdePortDispatchDeviceControl)
#pragma alloc_text(NONPAGE, IdePortAlwaysStatusSuccessIrp)
#pragma alloc_text(NONPAGE, IdePortDispatchPower)
#pragma alloc_text(NONPAGE, IdePortGenericCompletionRoutine)
#endif // ALLOC_PRAGMA
//
// get the share code
//
#include "..\share\util.c"
#if DBG
//
// for performance tuning
//
void _DebugPrintResetTickCount (LARGE_INTEGER * lastTickCount) {
KeQueryTickCount(lastTickCount);
}
void _DebugPrintTickCount (LARGE_INTEGER * lastTickCount, ULONG limit, PUCHAR filename, ULONG lineNumber)
{
LARGE_INTEGER tickCount;
KeQueryTickCount(&tickCount);
if ((tickCount.QuadPart - lastTickCount->QuadPart) >= limit) {
DebugPrint ((1, "File: %s Line %u: CurrentTick = %u (%u ticks since last check)\n", filename, lineNumber, (ULONG) tickCount.QuadPart, (ULONG) (tickCount.QuadPart - lastTickCount->QuadPart)));
}
*lastTickCount = tickCount;
}
#endif //DBG
//
// Globals
//
//
// Po Dispatch Table
//
PDRIVER_DISPATCH FdoPowerDispatchTable[NUM_POWER_MINOR_FUNCTION];
PDRIVER_DISPATCH PdoPowerDispatchTable[NUM_POWER_MINOR_FUNCTION];
IDE_FDO_LIST IdeGlobalFdoList = {-1};
NTSTATUS
IdePortNoSupportIrp (
IN PDEVICE_OBJECT DeviceObject,
IN OUT PIRP Irp
)
/*++
Routine Description:
Generic routine to fail unsupported irp
Arguments:
DeviceObject - Pointer to the device object for which this IRP applies.
Irp - Pointer to the IRP to fail.
Return Value:
NT status.
--*/
{
NTSTATUS status = Irp->IoStatus.Status;
PIO_STACK_LOCATION thisIrpSp;
thisIrpSp = IoGetCurrentIrpStackLocation( Irp );
//
// You should call PoStartNextPowerIrp before completing a power irp
//
if (thisIrpSp->MajorFunction == IRP_MJ_POWER) {
PoStartNextPowerIrp (Irp);
}
DebugPrint ((
DBG_WARNING,
"IdePort: devobj 0x%x failing unsupported Irp (0x%x, 0x%x) with status = %x\n",
DeviceObject,
thisIrpSp->MajorFunction,
thisIrpSp->MinorFunction,
status
));
IoCompleteRequest( Irp, IO_NO_INCREMENT );
return status;
} // IdePortNoSupportIrp
NTSTATUS
IdePortAlwaysStatusSuccessIrp (
IN PDEVICE_OBJECT DeviceObject,
IN OUT PIRP Irp
/*++
Routine Description:
Generic routine to STATUS_SUCCESS an irp
Arguments:
DeviceObject - Pointer to the device object for which this IRP applies.
Irp - Pointer to the IRP.
Return Value:
NT status.
--*/
)
{
Irp->IoStatus.Status = STATUS_SUCCESS;
IoCompleteRequest( Irp, IO_NO_INCREMENT );
return STATUS_SUCCESS;
} // IdePortAlwaysStatusSuccessIrp
NTSTATUS
IdePortPassDownToNextDriver (
IN PDEVICE_OBJECT DeviceObject,
IN OUT PIRP Irp
)
/*++
Routine Description:
Generic routine to pass an irp down to the lower driver
Arguments:
DeviceObject - Pointer to the device object for which this IRP applies.
Irp - Pointer to the IRP.
Return Value:
NT status.
--*/
{
PDEVICE_EXTENSION_HEADER doExtension;
PIO_STACK_LOCATION thisIrpSp;
NTSTATUS status;
thisIrpSp = IoGetCurrentIrpStackLocation( Irp );
doExtension = (PDEVICE_EXTENSION_HEADER) DeviceObject->DeviceExtension;
ASSERT (doExtension->AttacheeDeviceObject);
if (thisIrpSp->MajorFunction == IRP_MJ_POWER) {
//
// call PoStartNextPowerIrp before completing a power irp
//
PoStartNextPowerIrp (Irp);
IoSkipCurrentIrpStackLocation (Irp);
status = PoCallDriver (doExtension->AttacheeDeviceObject, Irp);
} else {
//
// Not a power irp
//
IoSkipCurrentIrpStackLocation (Irp);
status = IoCallDriver (doExtension->AttacheeDeviceObject, Irp);
}
return status;
} // IdePortPassDownToNextDriver
NTSTATUS
IdePortStatusSuccessAndPassDownToNextDriver (
IN PDEVICE_OBJECT DeviceObject,
IN OUT PIRP Irp
)
{
PAGED_CODE();
Irp->IoStatus.Status = STATUS_SUCCESS;
return IdePortPassDownToNextDriver(DeviceObject, Irp);
} // IdePortStatusSuccessAndPassDownToNextDriver
NTSTATUS
IdePortDispatchDeviceControl(
IN PDEVICE_OBJECT DeviceObject,
IN OUT PIRP Irp
)
/*++
Routine Description:
Dispatch routine for IRP_MJ_DEVICE_CONTROL
Arguments:
DeviceObject - Pointer to the device object for which this IRP applies.
Irp - Pointer to the IRP.
Return Value:
NT status.
--*/
{
PDEVICE_EXTENSION_HEADER DoExtensionHeader;
NTSTATUS status;
DoExtensionHeader = DeviceObject->DeviceExtension;
if (IS_PDO(DoExtensionHeader)) {
//
// PDO
//
status = DeviceDeviceIoControl (
DeviceObject,
Irp
);
} else {
//
// FDO
//
status = IdePortDeviceControl (
DeviceObject,
Irp
);
}
return status;
} // IdePortDispatchDeviceControl
NTSTATUS
IdePortDispatchPower(
IN PDEVICE_OBJECT DeviceObject,
IN OUT PIRP Irp
)
/*++
Routine Description:
Dispatch routine for IRP_MJ_POWER
Arguments:
DeviceObject - Pointer to the device object for which this IRP applies.
Irp - Pointer to the IRP.
Return Value:
NT status.
--*/
{
PIO_STACK_LOCATION thisIrpSp;
NTSTATUS status;
PDEVICE_EXTENSION_HEADER doExtension;
BOOLEAN pendingIrp;
//
// Get a pointer to our stack location and take appropriate action based
// on the minor function.
//
thisIrpSp = IoGetCurrentIrpStackLocation( Irp );
doExtension = (PDEVICE_EXTENSION_HEADER) DeviceObject->DeviceExtension;
DebugPrint ((DBG_POWER,
"IdePort: 0x%x %s %d got %s[%d, %d]\n",
doExtension->AttacheeDeviceObject ?
((PFDO_EXTENSION) doExtension)->IdeResource.TranslatedCommandBaseAddress :
((PPDO_EXTENSION) doExtension)->ParentDeviceExtension->IdeResource.TranslatedCommandBaseAddress,
doExtension->AttacheeDeviceObject ? "FDO" : "PDO",
doExtension->AttacheeDeviceObject ? 0 :
((PPDO_EXTENSION) doExtension)->TargetId,
IdeDebugPowerIrpName[thisIrpSp->MinorFunction],
thisIrpSp->Parameters.Power.Type,
thisIrpSp->Parameters.Power.State
));
if (thisIrpSp->MinorFunction < NUM_POWER_MINOR_FUNCTION) {
status = doExtension->PowerDispatchTable[thisIrpSp->MinorFunction] (DeviceObject, Irp);
} else {
DebugPrint ((DBG_WARNING,
"ATAPI: Power Dispatch Table too small\n"
));
status = doExtension->DefaultDispatch(DeviceObject, Irp);
}
return status;
} // IdePortDispatchPower
NTSTATUS
IdePortDispatchPnp(
IN PDEVICE_OBJECT DeviceObject,
IN OUT PIRP Irp
)
/*++
Routine Description:
Dispatch routine for IRP_MJ_PNP_POWER IRPs
Arguments:
DeviceObject - Pointer to the device object for which this IRP applies.
Irp - Pointer to the IRP_MJ_PNP_POWER IRP to dispatch.
Return Value:
NT status.
--*/
{
PIO_STACK_LOCATION thisIrpSp;
NTSTATUS status;
PDEVICE_EXTENSION_HEADER doExtension;
//
// Get a pointer to our stack location and take appropriate action based
// on the minor function.
//
thisIrpSp = IoGetCurrentIrpStackLocation( Irp );
doExtension = (PDEVICE_EXTENSION_HEADER) DeviceObject->DeviceExtension;
DebugPrint ((DBG_PNP,
"IdePort: 0x%x %s %d got %s\n",
doExtension->AttacheeDeviceObject ?
((PFDO_EXTENSION) doExtension)->IdeResource.TranslatedCommandBaseAddress :
((PPDO_EXTENSION) doExtension)->ParentDeviceExtension->IdeResource.TranslatedCommandBaseAddress,
doExtension->AttacheeDeviceObject ? "FDO" : "PDO",
doExtension->AttacheeDeviceObject ? 0 :
((PPDO_EXTENSION) doExtension)->TargetId,
IdeDebugPnpIrpName[thisIrpSp->MinorFunction]));
if (thisIrpSp->MinorFunction < NUM_PNP_MINOR_FUNCTION) {
status = doExtension->PnPDispatchTable[thisIrpSp->MinorFunction] (DeviceObject, Irp);
} else {
if (thisIrpSp->MinorFunction != 0xff) {
ASSERT (!"ATAPI: PnP Dispatch Table too small\n");
}
status = doExtension->DefaultDispatch (DeviceObject, Irp);
}
return status;
} // IdePortDispatchPnp
NTSTATUS
IdePortDispatchSystemControl(
IN PDEVICE_OBJECT DeviceObject,
IN OUT PIRP Irp
)
/*++
Routine Description:
Dispatch routine for IRP_MJ_SYSTEM_CONTROL (WMI) IRPs
Arguments:
DeviceObject - Pointer to the device object for which this IRP applies.
Irp - Pointer to the IRP_MJ_PNP_POWER IRP to dispatch.
Return Value:
NT status.
--*/
{
PIO_STACK_LOCATION thisIrpSp;
NTSTATUS status;
PDEVICE_EXTENSION_HEADER doExtension;
thisIrpSp = IoGetCurrentIrpStackLocation( Irp );
doExtension = (PDEVICE_EXTENSION_HEADER) DeviceObject->DeviceExtension;
DebugPrint ((DBG_WMI,
"IdePort: 0x%x %s %d got %s\n",
doExtension->AttacheeDeviceObject ?
((PFDO_EXTENSION) doExtension)->IdeResource.TranslatedCommandBaseAddress :
((PPDO_EXTENSION) doExtension)->ParentDeviceExtension->IdeResource.TranslatedCommandBaseAddress,
doExtension->AttacheeDeviceObject ? "FDO" : "PDO",
doExtension->AttacheeDeviceObject ? 0 :
((PPDO_EXTENSION) doExtension)->TargetId,
IdeDebugWmiIrpName[thisIrpSp->MinorFunction]));
if (thisIrpSp->MinorFunction < NUM_WMI_MINOR_FUNCTION) {
status = doExtension->WmiDispatchTable[thisIrpSp->MinorFunction] (DeviceObject, Irp);
} else {
DebugPrint((DBG_WARNING,
"ATAPI: WMI Dispatch Table too small\n"
));
status = doExtension->DefaultDispatch (DeviceObject, Irp);
}
return status;
} // IdePortDispatchSystemControl
ULONG
DriverEntry(
IN OUT PDRIVER_OBJECT DriverObject,
IN PUNICODE_STRING RegistryPath
)
/*++
Routine Description:
Entry point to this driver
Arguments:
DeviceObject - Pointer to the device object for which this IRP applies.
Irp - Pointer to the IRP.
Return Value:
NT status.
--*/
{
NTSTATUS status;
PIDEDRIVER_EXTENSION ideDriverExtension;
ULONG i;
#if DBG
//
// checking IDE_COMMAND_BLOCK_WRITE_REGISTERS structure and its macros
//
{
IDE_COMMAND_BLOCK_WRITE_REGISTERS baseIoAddress1;
IDE_REGISTERS_2 baseIoAddress2;
ULONG baseIoAddress1Length;
ULONG baseIoAddress2Length;
ULONG maxIdeDevice;
ULONG maxIdeTargetId;
AtapiBuildIoAddress (0,
0,
(PIDE_REGISTERS_1)&baseIoAddress1,
&baseIoAddress2,
&baseIoAddress1Length,
&baseIoAddress2Length,
&maxIdeDevice,
&maxIdeTargetId);
ASSERT (ATA_DATA16_REG (&baseIoAddress1) == 0);
ASSERT (ATA_ERROR_REG (&baseIoAddress1) == (PUCHAR)1);
ASSERT (ATA_SECTOR_COUNT_REG (&baseIoAddress1) == (PUCHAR)2);
ASSERT (ATA_SECTOR_NUMBER_REG(&baseIoAddress1) == (PUCHAR)3);
ASSERT (ATA_CYLINDER_LOW_REG (&baseIoAddress1) == (PUCHAR)4);
ASSERT (ATA_CYLINDER_HIGH_REG(&baseIoAddress1) == (PUCHAR)5);
ASSERT (ATA_DRIVE_SELECT_REG (&baseIoAddress1) == (PUCHAR)6);
ASSERT (ATA_STATUS_REG (&baseIoAddress1) == (PUCHAR)7);
ASSERT (ATA_FEATURE_REG (&baseIoAddress1) == (PUCHAR)1);
ASSERT (ATA_COMMAND_REG (&baseIoAddress1) == (PUCHAR)7);
ASSERT (ATAPI_DATA16_REG (&baseIoAddress1) == 0);
ASSERT (ATAPI_ERROR_REG (&baseIoAddress1) == (PUCHAR)1);
ASSERT (ATAPI_INTERRUPT_REASON_REG (&baseIoAddress1) == (PUCHAR)2);
ASSERT (ATAPI_BYTECOUNT_LOW_REG (&baseIoAddress1) == (PUCHAR)4);
ASSERT (ATAPI_BYTECOUNT_HIGH_REG (&baseIoAddress1) == (PUCHAR)5);
ASSERT (ATAPI_DRIVE_SELECT_REG (&baseIoAddress1) == (PUCHAR)6);
ASSERT (ATAPI_STATUS_REG (&baseIoAddress1) == (PUCHAR)7);
ASSERT (ATAPI_FEATURE_REG (&baseIoAddress1) == (PUCHAR)1);
ASSERT (ATAPI_COMMAND_REG (&baseIoAddress1) == (PUCHAR)7);
ASSERT (baseIoAddress1Length == 8);
ASSERT (baseIoAddress2Length == 1);
ASSERT (maxIdeDevice == 2);
}
#endif //DBG
if (!DriverObject) {
//
// We are called by crashdump or po
//
return AtapiCrashDumpDriverEntry (RegistryPath);
}
//
// Allocate Driver Object Extension for storing
// the RegistryPath
//
status = IoAllocateDriverObjectExtension(
DriverObject,
DRIVER_OBJECT_EXTENSION_ID,
sizeof (DRIVER_EXTENSION),
&ideDriverExtension
);
if (!NT_SUCCESS(status)) {
DebugPrint ((0, "IdePort: Unable to create driver extension\n"));
return status;
}
ASSERT(ideDriverExtension);
RtlZeroMemory (
ideDriverExtension,
sizeof (DRIVER_EXTENSION)
);
//
// make copy of the RegistryPath
//
ideDriverExtension->RegistryPath.Buffer = ExAllocatePool (NonPagedPool, RegistryPath->Length * sizeof(WCHAR));
if (ideDriverExtension->RegistryPath.Buffer == NULL) {
DebugPrint ((0, "IdePort: Unable to allocate memory for registry path\n"));
return (ULONG) STATUS_INSUFFICIENT_RESOURCES;
}
ideDriverExtension->RegistryPath.Length = 0;
ideDriverExtension->RegistryPath.MaximumLength = RegistryPath->Length;
RtlCopyUnicodeString (&ideDriverExtension->RegistryPath, RegistryPath);
//
// The PnP thing to do
//
DriverObject->DriverExtension->AddDevice = ChannelAddDevice;
//
// Set up the device driver entry points.
//
DriverObject->DriverStartIo = IdePortStartIo;
DriverObject->DriverUnload = IdePortUnload;
DriverObject->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] = IdePortDispatch;
DriverObject->MajorFunction[IRP_MJ_SCSI] = IdePortDispatch;
DriverObject->MajorFunction[IRP_MJ_CREATE] = IdePortAlwaysStatusSuccessIrp;
DriverObject->MajorFunction[IRP_MJ_CLOSE] = IdePortAlwaysStatusSuccessIrp;
DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = IdePortDispatchDeviceControl;
DriverObject->MajorFunction[IRP_MJ_POWER] = IdePortDispatchPower;
DriverObject->MajorFunction[IRP_MJ_PNP] = IdePortDispatchPnp;
DriverObject->MajorFunction[IRP_MJ_SYSTEM_CONTROL] = IdePortDispatchSystemControl;
//
// FDO PnP Dispatch Table
//
for (i=0; i<NUM_PNP_MINOR_FUNCTION; i++) {
FdoPnpDispatchTable[i] = IdePortPassDownToNextDriver;
}
FdoPnpDispatchTable[IRP_MN_START_DEVICE ] = ChannelStartDevice;
FdoPnpDispatchTable[IRP_MN_QUERY_REMOVE_DEVICE ] = IdePortStatusSuccessAndPassDownToNextDriver;
FdoPnpDispatchTable[IRP_MN_CANCEL_REMOVE_DEVICE ] = IdePortStatusSuccessAndPassDownToNextDriver;
FdoPnpDispatchTable[IRP_MN_REMOVE_DEVICE ] = ChannelRemoveDevice;
FdoPnpDispatchTable[IRP_MN_QUERY_STOP_DEVICE ] = IdePortStatusSuccessAndPassDownToNextDriver;
FdoPnpDispatchTable[IRP_MN_CANCEL_STOP_DEVICE ] = IdePortStatusSuccessAndPassDownToNextDriver;
FdoPnpDispatchTable[IRP_MN_STOP_DEVICE ] = ChannelStopDevice;
FdoPnpDispatchTable[IRP_MN_QUERY_DEVICE_RELATIONS ] = ChannelQueryDeviceRelations;
FdoPnpDispatchTable[IRP_MN_QUERY_ID ] = ChannelQueryId;
FdoPnpDispatchTable[IRP_MN_DEVICE_USAGE_NOTIFICATION ] = ChannelUsageNotification;
FdoPnpDispatchTable[IRP_MN_FILTER_RESOURCE_REQUIREMENTS] = ChannelFilterResourceRequirements;
FdoPnpDispatchTable[IRP_MN_QUERY_PNP_DEVICE_STATE ] = ChannelQueryPnPDeviceState;
FdoPnpDispatchTable[IRP_MN_SURPRISE_REMOVAL ] = ChannelSurpriseRemoveDevice;
//
// PDO PnP Dispatch Table
//
for (i=0; i<NUM_PNP_MINOR_FUNCTION; i++) {
PdoPnpDispatchTable[i] = IdePortNoSupportIrp;
}
PdoPnpDispatchTable[IRP_MN_START_DEVICE ] = DeviceStartDevice;
PdoPnpDispatchTable[IRP_MN_QUERY_DEVICE_RELATIONS ] = DeviceQueryDeviceRelations;
PdoPnpDispatchTable[IRP_MN_QUERY_REMOVE_DEVICE ] = DeviceQueryStopRemoveDevice;
PdoPnpDispatchTable[IRP_MN_REMOVE_DEVICE ] = DeviceRemoveDevice;
PdoPnpDispatchTable[IRP_MN_CANCEL_REMOVE_DEVICE ] = IdePortAlwaysStatusSuccessIrp;
PdoPnpDispatchTable[IRP_MN_STOP_DEVICE ] = DeviceStopDevice;
PdoPnpDispatchTable[IRP_MN_QUERY_STOP_DEVICE ] = DeviceQueryStopRemoveDevice;
PdoPnpDispatchTable[IRP_MN_CANCEL_STOP_DEVICE ] = IdePortAlwaysStatusSuccessIrp;
PdoPnpDispatchTable[IRP_MN_QUERY_ID ] = DeviceQueryId;
PdoPnpDispatchTable[IRP_MN_QUERY_CAPABILITIES ] = DeviceQueryCapabilities;
PdoPnpDispatchTable[IRP_MN_QUERY_DEVICE_TEXT ] = DeviceQueryText;
PdoPnpDispatchTable[IRP_MN_DEVICE_USAGE_NOTIFICATION ] = DeviceUsageNotification;
PdoPnpDispatchTable[IRP_MN_QUERY_PNP_DEVICE_STATE ] = DeviceQueryPnPDeviceState;
PdoPnpDispatchTable[IRP_MN_SURPRISE_REMOVAL ] = DeviceRemoveDevice;
//
// FDO Power Dispatch Table
//
for (i=0; i<NUM_POWER_MINOR_FUNCTION; i++) {
FdoPowerDispatchTable[i] = IdePortPassDownToNextDriver;
}
FdoPowerDispatchTable[IRP_MN_SET_POWER] = IdePortSetFdoPowerState;
FdoPowerDispatchTable[IRP_MN_QUERY_POWER] = ChannelQueryPowerState;
//
// PDO Power Dispatch Table
//
for (i=0; i<NUM_POWER_MINOR_FUNCTION; i++) {
PdoPowerDispatchTable[i] = IdePortNoSupportIrp;
}
PdoPowerDispatchTable[IRP_MN_SET_POWER] = IdePortSetPdoPowerState;
PdoPowerDispatchTable[IRP_MN_QUERY_POWER] = DeviceQueryPowerState;
//
// FDO WMI Dispatch Table
//
for (i=0; i<NUM_WMI_MINOR_FUNCTION; i++) {
FdoWmiDispatchTable[i] = IdePortPassDownToNextDriver;
}
//
// PDO WMI Dispatch Table
//
for (i=0; i<NUM_WMI_MINOR_FUNCTION; i++) {
#if defined (IDEPORT_WMI_SUPPORT)
PdoWmiDispatchTable[i] = IdePortWmiSystemControl;
#else
PdoWmiDispatchTable[i] = IdePortNoSupportIrp;
#endif // IDEPORT_WMI_SUPPORT
}
#if defined (IDEPORT_WMI_SUPPORT)
//
// Init WMI related stuff
//
IdePortWmiInit ();
#endif // IDEPORT_WMI_SUPPORT
//
// Create device object name directory
//
IdeCreateIdeDirectory();
IdeInitializeFdoList (&IdeGlobalFdoList);
//
// Detect legacy (non-enumerable) IDE devices
//
#if !defined(NO_LEGACY_DRIVERS)
IdePortDetectLegacyController (
DriverObject,
RegistryPath
);
#endif // NO_LEGACY_DRIVERS
//
// Register a bugcheck handler for ATAPI.
//
PortRegisterBugcheckCallback (&ATAPI_DUMP_ID, AtapiDumpCallback);
return STATUS_SUCCESS;
} // DriverEntry
#ifdef DRIVER_PARAMETER_REGISTRY_SUPPORT
HANDLE
IdePortOpenServiceSubKey (
IN PDRIVER_OBJECT DriverObject,
IN PUNICODE_STRING SubKeyPath
)
/*++
Routine Description:
Open a registry key
Arguments:
DriverObject - this driver driver object
SubKeyPath - registry key to open
Return Value:
handle to the registry key
--*/
{
PIDEDRIVER_EXTENSION ideDriverExtension;
OBJECT_ATTRIBUTES objectAttributes;
HANDLE serviceKey;
HANDLE subServiceKey;
NTSTATUS status;
ideDriverExtension = IoGetDriverObjectExtension(
DriverObject,
DRIVER_OBJECT_EXTENSION_ID
);
if (!ideDriverExtension) {
return NULL;
}
InitializeObjectAttributes(&objectAttributes,
&ideDriverExtension->RegistryPath,
OBJ_CASE_INSENSITIVE,
NULL,
(PSECURITY_DESCRIPTOR) NULL);
status = ZwOpenKey(&serviceKey,
KEY_READ,
&objectAttributes);
if (!NT_SUCCESS(status)) {
return NULL;
}
InitializeObjectAttributes(&objectAttributes,
SubKeyPath,
OBJ_CASE_INSENSITIVE,
serviceKey,
(PSECURITY_DESCRIPTOR) NULL);
status = ZwOpenKey(&subServiceKey,
KEY_READ,
&objectAttributes);
ZwClose(serviceKey);
if (NT_SUCCESS(status)) {
return subServiceKey;
} else {
return NULL;
}
} // IdePortOpenServiceSubKey
VOID
IdePortCloseServiceSubKey (
IN HANDLE SubServiceKey
)
/*++
Routine Description:
close a registry key handle
Arguments:
SubServiceKey - registry key to close
Return Value:
None
--*/
{
ZwClose(SubServiceKey);
} // IdePortCloseServiceSubKey
VOID
IdePortParseDeviceParameters(
IN HANDLE SubServiceKey,
IN OUT PCUSTOM_DEVICE_PARAMETER CustomDeviceParameter
)
/*++
Routine Description:
This routine parses a device key node and updates the CustomDeviceParameter
Arguments:
SubServiceKey - Supplies an open key to the device node.
CustomDeviceParameter - Supplies the configuration information to be initialized.
Return Value:
None
--*/
{
UCHAR keyValueInformationBuffer[SP_REG_BUFFER_SIZE];
PKEY_VALUE_FULL_INFORMATION keyValueInformation;
ULONG length;
ULONG index;
UNICODE_STRING unicodeString;
ANSI_STRING ansiString;
NTSTATUS status;
//
// Look at each of the values in the device node.
//
index = 0;
keyValueInformation = (PKEY_VALUE_FULL_INFORMATION) keyValueInformationBuffer;
while (NT_SUCCESS (ZwEnumerateValueKey(
SubServiceKey,
index,
KeyValueFullInformation,
keyValueInformation,
SP_REG_BUFFER_SIZE,
&length))) {
//
// Update the index for the next time around the loop.
//
index++;
//
// Check that the length is reasonable.
//
if (keyValueInformation->Type == REG_DWORD &&
keyValueInformation->DataLength != sizeof(ULONG)) {
continue;
}
//
// Check for a maximum lu number.
//
if (_wcsnicmp(keyValueInformation->Name, L"ScsiDebug",
keyValueInformation->NameLength/2) == 0) {
if (keyValueInformation->Type != REG_DWORD) {
DebugPrint((1, "IdeParseDevice: Bad data type for ScsiDebug.\n"));
continue;
}
#if DBG
ScsiDebug = *((PULONG) (keyValueInformationBuffer + keyValueInformation->DataOffset));
#endif
}
//
// Check for driver parameters tranfers.
//
if (_wcsnicmp(keyValueInformation->Name, L"DriverParameters",
keyValueInformation->NameLength/2) == 0) {
if (keyValueInformation->DataLength == 0) {
continue;
}
if (keyValueInformation->Type == REG_SZ) {
//
// This is a unicode string. Convert it to a ANSI string.
// Initialize the strings.
//
unicodeString.Buffer = (PWSTR) ((PCCHAR) keyValueInformation +
keyValueInformation->DataOffset);
unicodeString.Length = (USHORT) keyValueInformation->DataLength;
unicodeString.MaximumLength = (USHORT) keyValueInformation->DataLength;
status = RtlUnicodeStringToAnsiString(
&ansiString,
&unicodeString,
TRUE
);
if (NT_SUCCESS(status)) {
CustomDeviceParameter->CommandRegisterBase =
AtapiParseArgumentString(ansiString.Buffer, "BaseAddress");
if (CustomDeviceParameter->CommandRegisterBase) {
CustomDeviceParameter->IrqLevel =
AtapiParseArgumentString(ansiString.Buffer, "Interrupt");
}
RtlFreeAnsiString (&ansiString);
}
}
DebugPrint((2, "IdeParseDeviceParameters: Found driver parameter.\n"));
}
}
return;
} // IdePortParseDeviceParameters
#endif // DRIVER_PARAMETER_REGISTRY_SUPPORT
#pragma data_seg ("PAGEDATA")
//
// device description table
// index by SCSI device type
//
const static IDE_DEVICE_TYPE IdeDeviceType[] = {
{"Disk", "GenDisk", "DiskPeripheral" },
{"Sequential", "GenSequential", "TapePeripheral" },
{"Printer", "GenPrinter", "PrinterPeripheral" },
{"Processor", "GenProcessor", "ProcessorPeripheral" },
{"Worm", "GenWorm", "WormPeripheral" },
{"CdRom", "GenCdRom", "CdRomPeripheral" },
{"Scanner", "GenScanner", "ScannerPeripheral" },
{"Optical", "GenOptical", "OpticalDiskPeripheral" },
{"Changer", "GenChanger", "MediumChangerPeripheral" },
{"Net", "GenNet", "CommunicationPeripheral" }
};
#pragma data_seg ()
PCSTR
IdePortGetDeviceTypeString (
IN ULONG DeviceType
)
/*++
Routine Description:
look up SCSI device type string
Arguments:
DeviceType - SCSI device type
Return Value:
device type string
--*/
{
if (DeviceType < (sizeof (IdeDeviceType) / sizeof (IDE_DEVICE_TYPE))) {
return IdeDeviceType[DeviceType].DeviceTypeString;
} else {
return NULL;
}
} // IdePortGetDeviceTypeString
PCSTR
IdePortGetCompatibleIdString (
IN ULONG DeviceType
)
/*++
Routine Description:
look up compatible ID string
Arguments:
DeviceType - SCSI device type
Return Value:
compatible ID string
--*/
{
if (DeviceType < (sizeof (IdeDeviceType) / sizeof (IDE_DEVICE_TYPE))) {
return IdeDeviceType[DeviceType].CompatibleIdString;
} else {
return NULL;
}
} // IdePortGetCompatibleIdString
PCSTR
IdePortGetPeripheralIdString (
IN ULONG DeviceType
)
/*++
Routine Description:
look up peripheral ID string
Arguments:
DeviceType - SCSI device type
Return Value:
Peripheral ID string
--*/
{
if (DeviceType < (sizeof (IdeDeviceType) / sizeof (IDE_DEVICE_TYPE))) {
return IdeDeviceType[DeviceType].PeripheralIdString;
} else {
return NULL;
}
} // IdePortGetPeripheralIdString
VOID
IdePortUnload(
IN PDRIVER_OBJECT DriverObject
)
/*++
Routine Description:
get ready to be unloaded
Arguments:
DriverObject - the driver being unloaded
Return Value:
none
--*/
{
PIDEDRIVER_EXTENSION ideDriverExtension;
DebugPrint ((1, "IdePort: unloading...\n"));
ASSERT (DriverObject->DeviceObject == NULL);
ideDriverExtension = IoGetDriverObjectExtension(
DriverObject,
DRIVER_OBJECT_EXTENSION_ID
);
if ((ideDriverExtension != NULL) &&
(ideDriverExtension->RegistryPath.Buffer != NULL)) {
ExFreePool (ideDriverExtension->RegistryPath.Buffer);
}
//
// Deregister the ATAPI bugcheck callback. NOTE: The function will
// sliently fail if the callback has not yet been registered.
//
PortDeregisterBugcheckCallback (&ATAPI_DUMP_ID);
return;
} // IdePortUnload
BOOLEAN
IdePortOkToDetectLegacy (
IN PDRIVER_OBJECT DriverObject
)
{
NTSTATUS status;
OBJECT_ATTRIBUTES attributes;
HANDLE regHandle;
UNICODE_STRING pathRoot;
ULONG legacyDetection;
RTL_QUERY_REGISTRY_TABLE queryTable[2];
RtlInitUnicodeString (&pathRoot, L"\\Registry\\Machine\\System\\CurrentControlSet\\Control\\Pnp");
InitializeObjectAttributes(&attributes,
&pathRoot,
OBJ_CASE_INSENSITIVE,
NULL,
(PSECURITY_DESCRIPTOR)NULL
);
status = ZwOpenKey(&regHandle,
KEY_READ,
&attributes
);
if (NT_SUCCESS(status)) {
ULONG parameterValue = 0;
RtlZeroMemory(queryTable, sizeof(queryTable));
queryTable->QueryRoutine = NULL;
queryTable->Flags = RTL_QUERY_REGISTRY_REQUIRED | RTL_QUERY_REGISTRY_NOEXPAND | RTL_QUERY_REGISTRY_DIRECT;
queryTable->Name = L"DisableFirmwareMapper";
queryTable->EntryContext = &parameterValue;
queryTable->DefaultType = REG_DWORD;
queryTable->DefaultData = &parameterValue;
queryTable->DefaultLength = sizeof (parameterValue);
status = RtlQueryRegistryValues(RTL_REGISTRY_HANDLE,
(PWSTR) regHandle,
queryTable,
NULL,
NULL);
ZwClose (regHandle);
if (parameterValue) {
//
// Cool. no need to detect legacy controller
//
return FALSE;
}
}
status = IdePortGetParameterFromServiceSubKey (
DriverObject,
LEGACY_DETECTION,
REG_DWORD,
TRUE,
(PVOID) &legacyDetection,
0
);
if (NT_SUCCESS(status)) {
if (legacyDetection) {
legacyDetection = 0;
//
// disable legacy detection for next boot
//
IdePortGetParameterFromServiceSubKey (
DriverObject,
LEGACY_DETECTION,
REG_DWORD,
FALSE,
(PVOID) &legacyDetection,
sizeof (legacyDetection)
);
return TRUE;
} else {
return FALSE;
}
}
return TRUE;
}
BOOLEAN
IdePortSearchDeviceInRegMultiSzList (
IN PFDO_EXTENSION FdoExtension,
IN PIDENTIFY_DATA IdentifyData,
IN PWSTR RegKeyValue
)
{
PWSTR string;
UNICODE_STRING unicodeString;
BOOLEAN foundIt;
NTSTATUS status;
PWSTR regDeviceList;
ANSI_STRING ansiTargetDeviceId;
UNICODE_STRING unicodeTargetDeviceId;
PUCHAR targetDeviceId;
ULONG i;
ULONG j;
PAGED_CODE();
ASSERT (IdentifyData);
ASSERT (RegKeyValue);
foundIt = FALSE;
status = IdePortGetParameterFromServiceSubKey (
FdoExtension->DriverObject,
RegKeyValue,
REG_MULTI_SZ,
TRUE,
&regDeviceList,
0
);
if (NT_SUCCESS(status) && regDeviceList) {
targetDeviceId = ExAllocatePool (
PagedPool,
sizeof(IdentifyData->ModelNumber) +
sizeof(IdentifyData->FirmwareRevision) +
sizeof('\0')
);
if (targetDeviceId) {
for (i=0; i<sizeof(IdentifyData->ModelNumber); i+=2) {
targetDeviceId[i + 0] = IdentifyData->ModelNumber[i + 1];
targetDeviceId[i + 1] = IdentifyData->ModelNumber[i + 0];
if (targetDeviceId[i + 0] == '\0') {
targetDeviceId[i + 0] = ' ';
}
if (targetDeviceId[i + 1] == '\0') {
targetDeviceId[i + 1] = ' ';
}
}
for (j=0; j<sizeof(IdentifyData->FirmwareRevision); j+=2) {
targetDeviceId[i + j + 0] = IdentifyData->FirmwareRevision[j + 1];
targetDeviceId[i + j + 1] = IdentifyData->FirmwareRevision[j + 0];
if (targetDeviceId[i + j + 0] == '\0') {
targetDeviceId[i + j + 0] = ' ';
}
if (targetDeviceId[i + j + 1] == '\0') {
targetDeviceId[i + j + 1] = ' ';
}
}
targetDeviceId[i + j] = 0;
RtlInitAnsiString(
&ansiTargetDeviceId,
targetDeviceId
);
status = RtlAnsiStringToUnicodeString(
&unicodeTargetDeviceId,
&ansiTargetDeviceId,
TRUE
);
if (NT_SUCCESS(status)) {
string = regDeviceList;
DebugPrint ((DBG_REG_SEARCH, "IdePort: searching for %s in list\n", targetDeviceId));
while (string[0]) {
ULONG length;
DebugPrint ((DBG_REG_SEARCH, "IdePort: device list: %ws\n", string));
RtlInitUnicodeString(
&unicodeString,
string
);
//
// compare up to the length of the shorter string
//
if (unicodeTargetDeviceId.Length < unicodeString.Length) {
length = unicodeTargetDeviceId.Length;
} else {
length = unicodeString.Length;
}
if (length == RtlCompareMemory(unicodeTargetDeviceId.Buffer, unicodeString.Buffer, length)) {
DebugPrint ((DBG_REG_SEARCH, "IdePort: Found a target device on the device list. %ws\n", string));
foundIt = TRUE;
break;
} else {
string += (unicodeString.Length / sizeof(WCHAR)) + 1;
}
}
RtlFreeUnicodeString (
&unicodeTargetDeviceId
);
} else {
ASSERT (FALSE);
}
ExFreePool(targetDeviceId);
}
ExFreePool(regDeviceList);
}
return foundIt;
}
NTSTATUS
IdePortSyncSendIrp (
IN PDEVICE_OBJECT TargetDeviceObject,
IN PIO_STACK_LOCATION IrpSp,
IN OUT OPTIONAL PIO_STATUS_BLOCK IoStatus
)
{
PIO_STACK_LOCATION newIrpSp;
PIRP newIrp;
KEVENT event;
NTSTATUS status;
ASSERT (TargetDeviceObject);
ASSERT (IrpSp);
//
// Allocate an IRP for below
//
newIrp = IoAllocateIrp (TargetDeviceObject->StackSize, FALSE); // Get stack size from PDO
if (newIrp == NULL) {
DebugPrint ((DBG_ALWAYS, "IdePortSyncSendIrp: Unable to get allocate an irp"));
return STATUS_NO_MEMORY;
}
newIrpSp = IoGetNextIrpStackLocation(newIrp);
RtlMoveMemory (newIrpSp, IrpSp, sizeof (*IrpSp));
if (IoStatus) {
newIrp->IoStatus.Status = IoStatus->Status;
} else {
newIrp->IoStatus.Status = STATUS_NOT_SUPPORTED;
}
KeInitializeEvent(&event,
NotificationEvent,
FALSE);
IoSetCompletionRoutine (
newIrp,
IdePortGenericCompletionRoutine,
&event,
TRUE,
TRUE,
TRUE);
status = IoCallDriver (TargetDeviceObject, newIrp);
if (status == STATUS_PENDING) {
status = KeWaitForSingleObject(&event,
Executive,
KernelMode,
FALSE,
NULL);
}
status = newIrp->IoStatus.Status;
if (IoStatus) {
*IoStatus = newIrp->IoStatus;
}
IoFreeIrp (newIrp);
return status;
}
NTSTATUS
IdePortGenericCompletionRoutine (
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp,
IN PVOID Context
)
{
PKEVENT event = Context;
KeSetEvent(
event,
EVENT_INCREMENT,
FALSE
);
return STATUS_MORE_PROCESSING_REQUIRED;
} // IdePortSyncSendIrpCompletionRoutine
ULONG
IdePortSimpleCheckSum (
IN ULONG PartialSum,
IN PVOID SourceVa,
IN ULONG Length
)
/*++
Routine Description:
Computes a checksum for the supplied virtual address and length
This function comes from Dr. Dobbs Journal, May 1992
Arguments:
PartialSum - The previous partial checksum
SourceVa - Starting address
Length - Length, in bytes, of the range
Return Value:
The checksum value
--*/
{
PUSHORT Source;
Source = (PUSHORT) SourceVa;
Length = Length / 2;
while (Length--) {
PartialSum += *Source++;
PartialSum = (PartialSum >> 16) + (PartialSum & 0xFFFF);
}
return PartialSum;
}
BOOLEAN
IdePortInSetup(
IN PFDO_EXTENSION FdoExtension
)
/*++
--*/
{
OBJECT_ATTRIBUTES objectAttributes;
UNICODE_STRING keyName;
HANDLE hKey;
ULONG systemSetupInProgress = 0;
NTSTATUS status;
BOOLEAN textmodeSetup = TRUE;
PAGED_CODE();
RtlInitUnicodeString(&keyName, L"\\Registry\\Machine\\System\\CurrentControlSet\\Services\\setupdd");
InitializeObjectAttributes(&objectAttributes,
&keyName,
OBJ_CASE_INSENSITIVE,
NULL,
(PSECURITY_DESCRIPTOR) NULL);
status = ZwOpenKey(&hKey,
KEY_READ,
&objectAttributes);
if (!NT_SUCCESS(status)) {
textmodeSetup = FALSE;
} else {
ZwClose(hKey);
}
RtlInitUnicodeString(&keyName,L"\\Registry\\Machine\\System\\setup");
InitializeObjectAttributes(&objectAttributes,
&keyName,
OBJ_CASE_INSENSITIVE,
NULL,
(PSECURITY_DESCRIPTOR) NULL);
status = ZwOpenKey(&hKey,
KEY_READ,
&objectAttributes);
if (NT_SUCCESS(status)) {
//
// Query the data for the key value.
//
RTL_QUERY_REGISTRY_TABLE queryTable[2];
systemSetupInProgress = 0;
RtlZeroMemory(queryTable, sizeof(queryTable));
queryTable->QueryRoutine = NULL;
queryTable->Flags = RTL_QUERY_REGISTRY_REQUIRED | RTL_QUERY_REGISTRY_NOEXPAND | RTL_QUERY_REGISTRY_DIRECT;
queryTable->Name = L"SystemSetupInProgress";
queryTable->EntryContext = &systemSetupInProgress;
queryTable->DefaultType = REG_DWORD;
queryTable->DefaultData = &systemSetupInProgress;
queryTable->DefaultLength = sizeof (systemSetupInProgress);
status = RtlQueryRegistryValues(RTL_REGISTRY_HANDLE,
(PWSTR) hKey,
queryTable,
NULL,
NULL);
ZwClose (hKey);
}
return (textmodeSetup || systemSetupInProgress);
}
VOID
IdeInitializeFdoList(
IN PIDE_FDO_LIST FdoList
)
/*++
Routine Description:
Initialize IDE's FDO list.
Arguments:
FdoList - Fdo list to initialize.
Return Value:
None.
--*/
{
ASSERT (FdoList != NULL);
//
// This allows this function to be called multiple times. NB: This will
// NOT work correctly if we do not synchronize entries to ATAPI's
// DriverEntry routine. This is done for us by IO manager.
//
if (FdoList->Count == -1) {
InitializeListHead (&FdoList->List);
FdoList->Count = 0;
KeInitializeSpinLock (&FdoList->SpinLock);
}
}
VOID
IdeAddToFdoList (
PIDE_FDO_LIST FdoList,
PFDO_EXTENSION FdoExtension
)
/*++
Routine Description
Adds the FDO to the global list. A new list is allocated (and the
old one is freed) every time an Fdo is inserted into the list.
Arguments:
FdoList -
FdoExtension -
Return Value:
None.
--*/
{
KIRQL oldIrql;
KeAcquireSpinLock(&FdoList->SpinLock, &oldIrql);
InsertTailList(&FdoList->List, &FdoExtension->NextFdoLink);
FdoList->Count++;
KeReleaseSpinLock(&FdoList->SpinLock, oldIrql);
}
VOID
IdeRemoveFromFdoList (
PIDE_FDO_LIST FdoList,
PFDO_EXTENSION FdoExtension
)
/*++
Routine Description:
Remove from the IDE FDO list.
Arguments:
FdoList - Supplies the FDO list to remove from.
FdoExtension - Supplies the FDO extension to remove.
Return Value:
None.
--*/
{
KIRQL oldIrql;
KeAcquireSpinLock(&FdoList->SpinLock, &oldIrql);
#if DBG
//
// In CHK builds, we verify that the entry is actually in the list
// before removing it.
//
{
PLIST_ENTRY nextEntry;
PFDO_EXTENSION fdoExtension = NULL;
for ( nextEntry = FdoList->List.Flink;
nextEntry != &FdoList->List;
nextEntry = nextEntry->Flink ) {
fdoExtension = CONTAINING_RECORD (nextEntry,
FDO_EXTENSION,
NextFdoLink);
if (fdoExtension == FdoExtension) {
break;
}
}
//
// Verify that we are trying to remove from a list that we're
// actually on.
//
ASSERT(fdoExtension == FdoExtension);
}
#endif // DBG
FdoList->Count--;
RemoveEntryList(&FdoExtension->NextFdoLink);
KeReleaseSpinLock(&FdoList->SpinLock, oldIrql);
}