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Microsoft Windows NT Build 511 (DDK SDK) 11-01-1993
#if defined(i386)
/*++
Copyright (c) 1989, 1990, 1991, 1992, 1993 Microsoft Corporation
Module Name:
inpdep.c
Abstract:
The initialization and hardware-dependent portions of
the Microsoft InPort mouse port driver. Modifications to
support new mice similar to the InPort mouse should be
localized to this file.
Environment:
Kernel mode only.
Notes:
NOTES: (Future/outstanding issues)
- Powerfail not implemented.
- Consolidate duplicate code, where possible and appropriate.
Revision History:
--*/
#include "stdarg.h"
#include "stdio.h"
#include "string.h"
#include "ntddk.h"
#include "inport.h"
#include "inplog.h"
//
// Use the alloc_text pragma to specify the driver initialization routines
// (they can be paged out).
//
#ifdef ALLOC_PRAGMA
#pragma alloc_text(init,DriverEntry)
#pragma alloc_text(init,InpConfiguration)
#pragma alloc_text(init,InpPeripheralCallout)
#pragma alloc_text(init,InpServiceParameters)
#pragma alloc_text(init,InpInitializeHardware)
#pragma alloc_text(init,InpBuildResourceList)
#endif
NTSTATUS
DriverEntry(
IN PDRIVER_OBJECT DriverObject,
IN PUNICODE_STRING RegistryPath
)
/*++
Routine Description:
This routine initializes the Inport mouse port driver.
Arguments:
DriverObject - Pointer to driver object created by system.
RegistryPath - Pointer to the Unicode name of the registry path
for this driver.
Return Value:
The function value is the final status from the initialization operation.
--*/
{
PDEVICE_OBJECT portDeviceObject = NULL;
PDEVICE_EXTENSION deviceExtension = NULL;
DEVICE_EXTENSION tmpDeviceExtension;
NTSTATUS status = STATUS_SUCCESS;
KIRQL coordinatorIrql = 0;
ULONG interruptVector;
KIRQL interruptLevel;
PIO_ERROR_LOG_PACKET errorLogEntry;
ULONG uniqueErrorValue;
ULONG dumpCount;
NTSTATUS errorCode = STATUS_SUCCESS;
PCM_RESOURCE_LIST resources = NULL;
ULONG resourceListSize = 0;
BOOLEAN conflictDetected;
KAFFINITY affinity;
ULONG addressSpace;
PHYSICAL_ADDRESS cardAddress;
ULONG i;
UNICODE_STRING fullDeviceName;
UNICODE_STRING baseDeviceName;
UNICODE_STRING deviceNameSuffix;
UNICODE_STRING registryPath;
#define NAME_MAX 256
WCHAR nameBuffer[NAME_MAX];
#define DUMP_COUNT 4
ULONG dumpData[DUMP_COUNT];
InpPrint((1,"\n\nINPORT-InportInitialize: enter\n"));
//
// Zero-initialize various structures.
//
RtlZeroMemory(&tmpDeviceExtension, sizeof(tmpDeviceExtension));
for (i = 0; i < DUMP_COUNT; i++)
dumpData[i] = 0;
fullDeviceName.MaximumLength = 0;
deviceNameSuffix.MaximumLength = 0;
registryPath.MaximumLength = 0;
RtlZeroMemory(nameBuffer, NAME_MAX * sizeof(WCHAR));
baseDeviceName.Buffer = nameBuffer;
baseDeviceName.Length = 0;
baseDeviceName.MaximumLength = NAME_MAX * sizeof(WCHAR);
//
// Need to ensure that the registry path is null-terminated.
// Allocate pool to hold a null-terminated copy of the path.
//
registryPath.Buffer = ExAllocatePool(
PagedPool,
RegistryPath->Length + sizeof(UNICODE_NULL)
);
if (!registryPath.Buffer) {
InpPrint((
1,
"INPORT-InportInitialize: Couldn't allocate pool for registry path\n"
));
status = STATUS_UNSUCCESSFUL;
errorCode = INPORT_INSUFFICIENT_RESOURCES;
uniqueErrorValue = INPORT_ERROR_VALUE_BASE + 2;
dumpData[0] = (ULONG) RegistryPath->Length + sizeof(UNICODE_NULL);
dumpCount = 1;
goto InportInitializeExit;
} else {
registryPath.Length = RegistryPath->Length + sizeof(UNICODE_NULL);
registryPath.MaximumLength = registryPath.Length;
RtlZeroMemory(
registryPath.Buffer,
registryPath.Length
);
RtlMoveMemory(
registryPath.Buffer,
RegistryPath->Buffer,
RegistryPath->Length
);
}
//
// Get the configuration information for this driver.
//
InpConfiguration(&tmpDeviceExtension, ®istryPath, &baseDeviceName);
if (tmpDeviceExtension.HardwarePresent == FALSE) {
//
// There is no Inport mouse attached. Return unsuccessful status.
//
InpPrint((1,"INPORT-InportInitialize: No mouse attached.\n"));
status = STATUS_NO_SUCH_DEVICE;
errorCode = INPORT_NO_SUCH_DEVICE;
uniqueErrorValue = INPORT_ERROR_VALUE_BASE + 4;
dumpCount = 0;
goto InportInitializeExit;
}
//
// Set up space for the port's device object suffix. Note that
// we overallocate space for the suffix string because it is much
// easier than figuring out exactly how much space is required.
// The storage gets freed at the end of driver initialization, so
// who cares...
//
RtlInitUnicodeString(
&deviceNameSuffix,
NULL
);
deviceNameSuffix.MaximumLength = POINTER_PORTS_MAXIMUM * sizeof(WCHAR);
deviceNameSuffix.MaximumLength += sizeof(UNICODE_NULL);
deviceNameSuffix.Buffer = ExAllocatePool(
PagedPool,
deviceNameSuffix.MaximumLength
);
if (!deviceNameSuffix.Buffer) {
InpPrint((
1,
"INPORT-InportInitialize: Couldn't allocate string for device object suffix\n"
));
status = STATUS_UNSUCCESSFUL;
errorCode = INPORT_INSUFFICIENT_RESOURCES;
uniqueErrorValue = INPORT_ERROR_VALUE_BASE + 6;
dumpData[0] = (ULONG) deviceNameSuffix.MaximumLength;
dumpCount = 1;
goto InportInitializeExit;
}
RtlZeroMemory(
deviceNameSuffix.Buffer,
deviceNameSuffix.MaximumLength
);
//
// Set up space for the port's full device object name.
//
RtlInitUnicodeString(
&fullDeviceName,
NULL
);
fullDeviceName.MaximumLength = sizeof(L"\\Device\\") +
baseDeviceName.Length +
deviceNameSuffix.MaximumLength;
fullDeviceName.Buffer = ExAllocatePool(
PagedPool,
fullDeviceName.MaximumLength
);
if (!fullDeviceName.Buffer) {
InpPrint((
1,
"INPORT-InportInitialize: Couldn't allocate string for device object name\n"
));
status = STATUS_UNSUCCESSFUL;
errorCode = INPORT_INSUFFICIENT_RESOURCES;
uniqueErrorValue = INPORT_ERROR_VALUE_BASE + 8;
dumpData[0] = (ULONG) fullDeviceName.MaximumLength;
dumpCount = 1;
goto InportInitializeExit;
}
RtlZeroMemory(
fullDeviceName.Buffer,
fullDeviceName.MaximumLength
);
RtlAppendUnicodeToString(
&fullDeviceName,
L"\\Device\\"
);
RtlAppendUnicodeToString(
&fullDeviceName,
baseDeviceName.Buffer
);
for (i = 0; i < POINTER_PORTS_MAXIMUM; i++) {
//
// Append the suffix to the device object name string. E.g., turn
// \Device\PointerPort into \Device\PointerPort0. Then we attempt
// to create the device object. If the device object already
// exists (because it was already created by another port driver),
// increment the suffix and try again.
//
status = RtlIntegerToUnicodeString(
i,
10,
&deviceNameSuffix
);
if (!NT_SUCCESS(status)) {
break;
}
RtlAppendUnicodeStringToString(
&fullDeviceName,
&deviceNameSuffix
);
InpPrint((
1,
"INPORT-InportInitialize: Creating device object named %ws\n",
fullDeviceName.Buffer
));
//
// Create a non-exclusive device object for the Inport mouse
// port device.
//
status = IoCreateDevice(
DriverObject,
sizeof(DEVICE_EXTENSION),
&fullDeviceName,
FILE_DEVICE_INPORT_PORT,
0,
FALSE,
&portDeviceObject
);
if (NT_SUCCESS(status)) {
//
// We've successfully created a device object.
//
break;
} else {
//
// We'll increment the suffix and try again. Note that we reset
// the length of the string here to get back to the beginning
// of the suffix portion of the name. Do not bother to
// zero the suffix, though, because the string for the
// incremented suffix will be at least as long as the previous
// one.
//
fullDeviceName.Length -= deviceNameSuffix.Length;
}
}
if (!NT_SUCCESS(status)) {
InpPrint((
1,
"INPORT-InportInitialize: Could not create port device object = %ws\n",
fullDeviceName.Buffer
));
errorCode = INPORT_INSUFFICIENT_RESOURCES;
uniqueErrorValue = INPORT_ERROR_VALUE_BASE + 10;
dumpData[0] = (ULONG) i;
dumpCount = 1;
goto InportInitializeExit;
}
//
// Do buffered I/O. I.e., the I/O system will copy to/from user data
// from/to a system buffer.
//
portDeviceObject->Flags |= DO_BUFFERED_IO;
//
// Set up the device extension.
//
deviceExtension =
(PDEVICE_EXTENSION) portDeviceObject->DeviceExtension;
*deviceExtension = tmpDeviceExtension;
deviceExtension->DeviceObject = portDeviceObject;
//
// Set up the device resource list prior to reporting resource usage.
//
InpBuildResourceList(deviceExtension, &resources, &resourceListSize);
//
// Report resource usage for the registry.
//
IoReportResourceUsage(
&baseDeviceName,
DriverObject,
NULL,
0,
portDeviceObject,
resources,
resourceListSize,
FALSE,
&conflictDetected
);
if (conflictDetected) {
//
// Some other device already owns the ports or interrupts.
// Fatal error.
//
InpPrint((
1,
"INPORT-InportInitialize: Resource usage conflict\n"
));
//
// Log an error.
//
errorCode = INPORT_RESOURCE_CONFLICT;
uniqueErrorValue = INPORT_ERROR_VALUE_BASE + 15;
dumpData[0] = (ULONG)
resources->List[0].PartialResourceList.PartialDescriptors[0].u.Interrupt.Level;
dumpData[1] = (ULONG)
resources->List[0].PartialResourceList.PartialDescriptors[0].u.Interrupt.Vector;
dumpData[2] = (ULONG)
resources->List[0].PartialResourceList.PartialDescriptors[1].u.Interrupt.Level;
dumpData[3] = (ULONG)
resources->List[0].PartialResourceList.PartialDescriptors[1].u.Interrupt.Vector;
dumpCount = 4;
goto InportInitializeExit;
}
//
// Map the Inport controller registers.
//
addressSpace = (deviceExtension->Configuration.PortList[0].Flags
& CM_RESOURCE_PORT_IO) == CM_RESOURCE_PORT_IO? 1:0;
HalTranslateBusAddress(
deviceExtension->Configuration.InterfaceType,
deviceExtension->Configuration.BusNumber,
deviceExtension->Configuration.PortList[0].u.Port.Start,
&addressSpace,
&cardAddress
);
if (!addressSpace) {
deviceExtension->Configuration.UnmapRegistersRequired = TRUE;
deviceExtension->Configuration.DeviceRegisters[0] =
MmMapIoSpace(
cardAddress,
deviceExtension->Configuration.PortList[0].u.Port.Length,
FALSE
);
} else {
deviceExtension->Configuration.UnmapRegistersRequired = FALSE;
deviceExtension->Configuration.DeviceRegisters[0] =
(PVOID)cardAddress.LowPart;
}
if (!deviceExtension->Configuration.DeviceRegisters[0]) {
InpPrint((
1,
"INPORT-InportInitialize: Couldn't map the device registers.\n"
));
deviceExtension->Configuration.UnmapRegistersRequired = FALSE;
status = STATUS_NONE_MAPPED;
//
// Log an error.
//
errorCode = INPORT_REGISTERS_NOT_MAPPED;
uniqueErrorValue = INPORT_ERROR_VALUE_BASE + 20;
dumpData[0] = cardAddress.LowPart;
dumpCount = 1;
goto InportInitializeExit;
}
//
// Initialize the Inport hardware to default values for the mouse. Note
// that interrupts remain disabled until the class driver
// requests a MOUSE_CONNECT internal device control.
//
status = InpInitializeHardware(portDeviceObject);
if (!NT_SUCCESS(status)) {
InpPrint((
1,
"INPORT-InportInitialize: Could not initialize hardware\n"
));
goto InportInitializeExit;
}
//
// Allocate the ring buffer for the mouse input data.
//
deviceExtension->InputData =
ExAllocatePool(
NonPagedPool,
deviceExtension->Configuration.MouseAttributes.InputDataQueueLength
);
if (!deviceExtension->InputData) {
//
// Could not allocate memory for the mouse data queue.
//
InpPrint((
1,
"INPORT-InportInitialize: Could not allocate mouse input data queue\n"
));
status = STATUS_INSUFFICIENT_RESOURCES;
//
// Log an error.
//
errorCode = INPORT_NO_BUFFER_ALLOCATED;
uniqueErrorValue = INPORT_ERROR_VALUE_BASE + 30;
dumpData[0] =
deviceExtension->Configuration.MouseAttributes.InputDataQueueLength;
dumpCount = 1;
goto InportInitializeExit;
}
deviceExtension->DataEnd =
(PMOUSE_INPUT_DATA) ((PCHAR) (deviceExtension->InputData)
+ deviceExtension->Configuration.MouseAttributes.InputDataQueueLength);
//
// Zero the mouse input data ring buffer.
//
RtlZeroMemory(
deviceExtension->InputData,
deviceExtension->Configuration.MouseAttributes.InputDataQueueLength
);
//
// Initialize the connection data.
//
deviceExtension->ConnectData.ClassDeviceObject = NULL;
deviceExtension->ConnectData.ClassService = NULL;
//
// Initialize the input data queue.
//
InpInitializeDataQueue((PVOID) deviceExtension);
//
// Initialize the port ISR DPC. The ISR DPC is responsible for
// calling the connected class driver's callback routine to process
// the input data queue.
//
deviceExtension->DpcInterlockVariable = -1;
KeInitializeSpinLock(&deviceExtension->SpinLock);
KeInitializeDpc(
&deviceExtension->IsrDpc,
(PKDEFERRED_ROUTINE) InportIsrDpc,
portDeviceObject
);
KeInitializeDpc(
&deviceExtension->IsrDpcRetry,
(PKDEFERRED_ROUTINE) InportIsrDpc,
portDeviceObject
);
//
// Initialize the mouse data consumption timer.
//
KeInitializeTimer(&deviceExtension->DataConsumptionTimer);
//
// Initialize the port DPC queue to log overrun and internal
// driver errors.
//
KeInitializeDpc(
&deviceExtension->ErrorLogDpc,
(PKDEFERRED_ROUTINE) InportErrorLogDpc,
portDeviceObject
);
//
// From the Hal, get the interrupt vector and level.
//
interruptVector = HalGetInterruptVector(
deviceExtension->Configuration.InterfaceType,
deviceExtension->Configuration.BusNumber,
deviceExtension->Configuration.MouseInterrupt.u.Interrupt.Level,
deviceExtension->Configuration.MouseInterrupt.u.Interrupt.Vector,
&interruptLevel,
&affinity
);
//
// Initialize and connect the interrupt object for the mouse.
//
status = IoConnectInterrupt(
&(deviceExtension->InterruptObject),
(PKSERVICE_ROUTINE) InportInterruptService,
(PVOID) portDeviceObject,
(PKSPIN_LOCK)NULL,
interruptVector,
interruptLevel,
interruptLevel,
deviceExtension->Configuration.MouseInterrupt.Flags
== CM_RESOURCE_INTERRUPT_LATCHED ? Latched:LevelSensitive,
deviceExtension->Configuration.MouseInterrupt.ShareDisposition,
affinity,
deviceExtension->Configuration.FloatingSave
);
if (!NT_SUCCESS(status)) {
//
// Failed to install. Free up resources before exiting.
//
InpPrint((
1,
"INPORT-InportInitialize: Could not connect mouse interrupt\n"
));
//
// Log an error.
//
errorCode = INPORT_NO_INTERRUPT_CONNECTED;
uniqueErrorValue = INPORT_ERROR_VALUE_BASE + 40;
dumpData[0] = interruptLevel;
dumpCount = 1;
goto InportInitializeExit;
}
//
// Once initialization is finished, load the device map information
// into the registry so that setup can determine which pointer port
// is active.
//
status = RtlWriteRegistryValue(
RTL_REGISTRY_DEVICEMAP,
baseDeviceName.Buffer,
fullDeviceName.Buffer,
REG_SZ,
registryPath.Buffer,
registryPath.Length
);
if (!NT_SUCCESS(status)) {
InpPrint((
1,
"INPORT-InportInitialize: Could not store name in DeviceMap\n"
));
errorCode = INPORT_NO_DEVICEMAP_CREATED;
uniqueErrorValue = INPORT_ERROR_VALUE_BASE + 50;
dumpCount = 0;
goto InportInitializeExit;
} else {
InpPrint((
1,
"INPORT-InportInitialize: Stored name in DeviceMap\n"
));
}
ASSERT(status == STATUS_SUCCESS);
//
// Set up the device driver entry points.
//
DriverObject->DriverStartIo = InportStartIo;
DriverObject->MajorFunction[IRP_MJ_CREATE] = InportOpenClose;
DriverObject->MajorFunction[IRP_MJ_CLOSE] = InportOpenClose;
DriverObject->MajorFunction[IRP_MJ_FLUSH_BUFFERS] =
InportFlush;
DriverObject->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] =
InportInternalDeviceControl;
//
// NOTE: Don't allow this driver to unload. Otherwise, we would set
// DriverObject->DriverUnload = InportUnload.
//
InportInitializeExit:
//
// Log an error, if necessary.
//
if (errorCode != STATUS_SUCCESS) {
errorLogEntry = (PIO_ERROR_LOG_PACKET)
IoAllocateErrorLogEntry(
(portDeviceObject == NULL) ?
(PVOID) DriverObject : (PVOID) portDeviceObject,
(UCHAR)(sizeof(IO_ERROR_LOG_PACKET) + (dumpCount * sizeof(ULONG)))
);
if (errorLogEntry != NULL) {
errorLogEntry->ErrorCode = errorCode;
errorLogEntry->DumpDataSize = dumpCount * sizeof(ULONG);
errorLogEntry->SequenceNumber = 0;
errorLogEntry->MajorFunctionCode = 0;
errorLogEntry->IoControlCode = 0;
errorLogEntry->RetryCount = 0;
errorLogEntry->UniqueErrorValue = uniqueErrorValue;
errorLogEntry->FinalStatus = status;
for (i = 0; i < dumpCount; i++)
errorLogEntry->DumpData[i] = dumpData[i];
IoWriteErrorLogEntry(errorLogEntry);
}
}
if (!NT_SUCCESS(status)) {
//
// The initialization failed. Cleanup resources before exiting.
//
// Note: No need/way to undo the KeInitializeDpc or
// KeInitializeTimer calls.
//
if (resources) {
//
// Call IoReportResourceUsage to remove the resources from
// the map.
//
resources->Count = 0;
IoReportResourceUsage(
&baseDeviceName,
DriverObject,
NULL,
0,
portDeviceObject,
resources,
resourceListSize,
FALSE,
&conflictDetected
);
}
if (deviceExtension) {
if (deviceExtension->InterruptObject != NULL)
IoDisconnectInterrupt(deviceExtension->InterruptObject);
if (deviceExtension->Configuration.UnmapRegistersRequired) {
MmUnmapIoSpace(
deviceExtension->Configuration.DeviceRegisters[0],
deviceExtension->Configuration.PortList[0].u.Port.Length
);
}
if (deviceExtension->InputData)
ExFreePool(deviceExtension->InputData);
}
if (portDeviceObject)
IoDeleteDevice(portDeviceObject);
}
//
// Free the resource list.
//
// N.B. If we ever decide to hang on to the resource list instead,
// we need to allocate it from non-paged pool (it is now paged pool).
//
if (resources)
ExFreePool(resources);
//
// Free the unicode strings.
//
if (deviceNameSuffix.MaximumLength != 0)
ExFreePool(deviceNameSuffix.Buffer);
if (fullDeviceName.MaximumLength != 0)
ExFreePool(fullDeviceName.Buffer);
if (registryPath.MaximumLength != 0)
ExFreePool(registryPath.Buffer);
InpPrint((1,"INPORT-InportInitialize: exit\n"));
return(status);
}
BOOLEAN
InportInterruptService(
IN PKINTERRUPT Interrupt,
IN PVOID Context
)
/*++
Routine Description:
This is the interrupt service routine for the mouse device.
Arguments:
Interrupt - A pointer to the interrupt object for this interrupt.
Context - A pointer to the device object.
Return Value:
Returns TRUE if the interrupt was expected (and therefore processed);
otherwise, FALSE is returned.
--*/
{
PDEVICE_EXTENSION deviceExtension;
PDEVICE_OBJECT deviceObject;
PUCHAR port;
UCHAR previousButtons;
UCHAR mode;
UCHAR status;
UNREFERENCED_PARAMETER(Interrupt);
InpPrint((2, "INPORT-InportInterruptService: enter\n"));
//
// Get the device extension.
//
deviceObject = (PDEVICE_OBJECT) Context;
deviceExtension = (PDEVICE_EXTENSION) deviceObject->DeviceExtension;
//
// Get the Inport mouse port address.
//
port = deviceExtension->Configuration.DeviceRegisters[0];
//
// Note: It would be nice to verify that the interrupt really
// belongs to this driver, but it is currently not known how to
// make that determination.
//
//
// Set the Inport hold bit. Note that there is a bug in the 1.1 version
// of the Inport chip in DATA mode. The interrupt signal doesn't get
// cleared in some cases, thus effectively disabling the device. The
// workaround is to set the HOLD bit twice.
//
WRITE_PORT_UCHAR((PUCHAR) port, INPORT_MODE_REGISTER);
mode = READ_PORT_UCHAR((PUCHAR) (port + INPORT_DATA_REGISTER_1));
WRITE_PORT_UCHAR(
(PUCHAR) (port + INPORT_DATA_REGISTER_1),
(UCHAR) (mode | INPORT_MODE_HOLD)
);
WRITE_PORT_UCHAR(
(PUCHAR) (port + INPORT_DATA_REGISTER_1),
(UCHAR) (mode | INPORT_MODE_HOLD)
);
//
// Read the Inport status register. It contains the following information:
//
// XXXXXXXX
// | | |------ 1 if button 3 is down (right button)
// | |-------- 1 if button 1 is down (left button)
// |------------ 1 if the mouse has moved
//
WRITE_PORT_UCHAR((PUCHAR) port, INPORT_STATUS_REGISTER);
status = READ_PORT_UCHAR((PUCHAR) (port + INPORT_DATA_REGISTER_1));
InpPrint((2, "INPORT-InportInterruptService: status byte 0x%x\n", status));
//
// Update CurrentInput with button transition data.
// I.e., set a button up/down bit in the Buttons field if
// the state of a given button has changed since we
// received the last packet.
//
previousButtons =
deviceExtension->PreviousButtons;
deviceExtension->CurrentInput.Buttons = 0;
if ((!(previousButtons & INPORT_STATUS_BUTTON1))
&& (status & INPORT_STATUS_BUTTON1)) {
deviceExtension->CurrentInput.Buttons |=
MOUSE_LEFT_BUTTON_DOWN;
} else
if ((previousButtons & INPORT_STATUS_BUTTON1)
&& !(status & INPORT_STATUS_BUTTON1)) {
deviceExtension->CurrentInput.Buttons |=
MOUSE_LEFT_BUTTON_UP;
}
if ((!(previousButtons & INPORT_STATUS_BUTTON3))
&& (status & INPORT_STATUS_BUTTON3)) {
deviceExtension->CurrentInput.Buttons |=
MOUSE_RIGHT_BUTTON_DOWN;
} else
if ((previousButtons & INPORT_STATUS_BUTTON3)
&& !(status & INPORT_STATUS_BUTTON3)) {
deviceExtension->CurrentInput.Buttons |=
MOUSE_RIGHT_BUTTON_UP;
}
//
// If the button position changed or the mouse moved, continue to process
// the interrupt. Otherwise, just clear the hold bit and ignore this
// interrupt's data.
//
if (deviceExtension->CurrentInput.Buttons
|| (status & INPORT_STATUS_MOVEMENT)) {
deviceExtension->CurrentInput.UnitId = deviceExtension->UnitId;
//
// Keep track of the state of the mouse buttons for the next
// interrupt.
//
deviceExtension->PreviousButtons =
status & (INPORT_STATUS_BUTTON1 | INPORT_STATUS_BUTTON3);
//
// If mouse movement was recorded, get the X and Y motion data.
//
if (status & INPORT_STATUS_MOVEMENT) {
//
// Select the Data1 register as the current data register, and
// get the X motion byte.
//
WRITE_PORT_UCHAR((PUCHAR) port, INPORT_DATA_REGISTER_1);
deviceExtension->CurrentInput.LastX =
(LONG)(SCHAR) READ_PORT_UCHAR(
(PUCHAR) (port + INPORT_DATA_REGISTER_1));
//
// Select the Data2 register as the current data register, and
// get the Y motion byte.
//
WRITE_PORT_UCHAR((PUCHAR) port, INPORT_DATA_REGISTER_2);
deviceExtension->CurrentInput.LastY =
(LONG)(SCHAR) READ_PORT_UCHAR(
(PUCHAR) (port + INPORT_DATA_REGISTER_1));
} else {
deviceExtension->CurrentInput.LastX = 0;
deviceExtension->CurrentInput.LastY = 0;
}
//
// Clear the Inport hold bit.
//
WRITE_PORT_UCHAR((PUCHAR) port, INPORT_MODE_REGISTER);
mode = READ_PORT_UCHAR((PUCHAR) (port + INPORT_DATA_REGISTER_1));
WRITE_PORT_UCHAR(
(PUCHAR) (port + INPORT_DATA_REGISTER_1),
(UCHAR) (mode & ~INPORT_MODE_HOLD)
);
//
// Write the input data to the queue and request the ISR DPC to
// finish processing the interrupt at DISPATCH_LEVEL.
//
if (!InpWriteDataToQueue(
deviceExtension,
&deviceExtension->CurrentInput
)) {
//
// The mouse input data queue is full. Just drop the
// latest input on the floor.
//
// Queue a DPC to log an overrun error.
//
InpPrint((
1,
"INPORT-InportInterruptService: queue overflow\n"
));
if (deviceExtension->OkayToLogOverflow) {
KeInsertQueueDpc(
&deviceExtension->ErrorLogDpc,
(PIRP) NULL,
(PVOID) (ULONG) INPORT_MOU_BUFFER_OVERFLOW
);
deviceExtension->OkayToLogOverflow = FALSE;
}
} else if (deviceExtension->DpcInterlockVariable >= 0) {
//
// The ISR DPC is already executing. Tell the ISR DPC it has
// more work to do by incrementing the DpcInterlockVariable.
//
deviceExtension->DpcInterlockVariable += 1;
} else {
//
// Queue the ISR DPC.
//
KeInsertQueueDpc(
&deviceExtension->IsrDpc,
deviceObject->CurrentIrp,
NULL
);
}
} else {
InpPrint((
3,
"INPORT-InportInterruptService: interrupt without button/motion change\n"
));
//
// Clear the Inport hold bit.
//
WRITE_PORT_UCHAR((PUCHAR) port, INPORT_MODE_REGISTER);
mode = READ_PORT_UCHAR((PUCHAR) (port + INPORT_DATA_REGISTER_1));
WRITE_PORT_UCHAR(
(PUCHAR) (port + INPORT_DATA_REGISTER_1),
(UCHAR) (mode & ~INPORT_MODE_HOLD)
);
}
InpPrint((2, "INPORT-InportInterruptService: exit\n"));
return(TRUE);
}
VOID
InportUnload(
IN PDRIVER_OBJECT DriverObject
)
{
UNREFERENCED_PARAMETER(DriverObject);
InpPrint((2, "INPORT-InportUnload: enter\n"));
InpPrint((2, "INPORT-InportUnload: exit\n"));
}
VOID
InpBuildResourceList(
IN PDEVICE_EXTENSION DeviceExtension,
OUT PCM_RESOURCE_LIST *ResourceList,
OUT PULONG ResourceListSize
)
/*++
Routine Description:
Creates a resource list that is used to query or report resource usage.
Arguments:
DeviceExtension - Pointer to the port's device extension.
ResourceList - Pointer to a pointer to the resource list to be allocated
and filled.
ResourceListSize - Pointer to the returned size of the resource
list (in bytes).
Return Value:
None. If the call succeeded, *ResourceList points to the built
resource list and *ResourceListSize is set to the size (in bytes)
of the resource list; otherwise, *ResourceList is NULL.
Note:
Memory is allocated here for *ResourceList. It must be
freed up by the caller, by calling ExFreePool();
--*/
{
ULONG count = 0;
PIO_ERROR_LOG_PACKET errorLogEntry;
ULONG i = 0;
ULONG j = 0;
count += DeviceExtension->Configuration.PortListCount;
if (DeviceExtension->Configuration.MouseInterrupt.Type
== CmResourceTypeInterrupt)
count += 1;
*ResourceListSize = sizeof(CM_RESOURCE_LIST) +
((count - 1) * sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR));
*ResourceList = (PCM_RESOURCE_LIST) ExAllocatePool(
PagedPool,
*ResourceListSize
);
//
// Return NULL if the structure could not be allocated.
// Otherwise, fill in the resource list.
//
if (!*ResourceList) {
//
// Could not allocate memory for the resource list.
//
InpPrint((
1,
"INPORT-InpBuildResourceList: Could not allocate resource list\n"
));
//
// Log an error.
//
errorLogEntry = (PIO_ERROR_LOG_PACKET)IoAllocateErrorLogEntry(
DeviceExtension->DeviceObject,
sizeof(IO_ERROR_LOG_PACKET)
+ sizeof(ULONG)
);
if (errorLogEntry != NULL) {
errorLogEntry->ErrorCode = INPORT_INSUFFICIENT_RESOURCES;
errorLogEntry->DumpDataSize = sizeof(ULONG);
errorLogEntry->SequenceNumber = 0;
errorLogEntry->MajorFunctionCode = 0;
errorLogEntry->IoControlCode = 0;
errorLogEntry->RetryCount = 0;
errorLogEntry->UniqueErrorValue = INPORT_ERROR_VALUE_BASE + 110;
errorLogEntry->FinalStatus = STATUS_INSUFFICIENT_RESOURCES;
errorLogEntry->DumpData[0] = *ResourceListSize;
*ResourceListSize = 0;
IoWriteErrorLogEntry(errorLogEntry);
}
return;
}
RtlZeroMemory(
*ResourceList,
*ResourceListSize
);
//
// Concoct one full resource descriptor.
//
(*ResourceList)->Count = 1;
(*ResourceList)->List[0].InterfaceType =
DeviceExtension->Configuration.InterfaceType;
(*ResourceList)->List[0].BusNumber =
DeviceExtension->Configuration.BusNumber;
//
// Build the partial resource descriptors for interrupt and port
// resources from the saved values.
//
(*ResourceList)->List[0].PartialResourceList.Count = count;
if (DeviceExtension->Configuration.MouseInterrupt.Type
== CmResourceTypeInterrupt)
(*ResourceList)->List[0].PartialResourceList.PartialDescriptors[i++] =
DeviceExtension->Configuration.MouseInterrupt;
for (j = 0; j < DeviceExtension->Configuration.PortListCount; j++) {
(*ResourceList)->List[0].PartialResourceList.PartialDescriptors[i++] =
DeviceExtension->Configuration.PortList[j];
}
}
VOID
InpConfiguration(
IN PDEVICE_EXTENSION DeviceExtension,
IN PUNICODE_STRING RegistryPath,
IN PUNICODE_STRING DeviceName
)
/*++
Routine Description:
This routine retrieves the configuration information for the mouse.
Arguments:
DeviceExtension - Pointer to the device extension.
RegistryPath - Pointer to the null-terminated Unicode name of the
registry path for this driver.
DeviceName - Pointer to the Unicode string that will receive
the port device name.
Return Value:
None. As a side-effect, may set DeviceExtension->HardwarePresent.
--*/
{
NTSTATUS status = STATUS_SUCCESS;
PINPORT_CONFIGURATION_INFORMATION configuration;
INTERFACE_TYPE interfaceType;
CONFIGURATION_TYPE controllerType = PointerController;
CONFIGURATION_TYPE peripheralType = PointerPeripheral;
ULONG i;
for (i = 0; i < MaximumInterfaceType; i++) {
//
// Get the registry information for this device.
//
interfaceType = i;
status = IoQueryDeviceDescription(&interfaceType,
NULL,
&controllerType,
NULL,
&peripheralType,
NULL,
InpPeripheralCallout,
(PVOID) DeviceExtension);
if (DeviceExtension->HardwarePresent) {
//
// Get the service parameters (e.g., user-configurable
// data input queue size, etc.).
//
InpServiceParameters(DeviceExtension, RegistryPath, DeviceName);
configuration = &DeviceExtension->Configuration;
//
// Initialize mouse-specific configuration parameters.
//
configuration->MouseAttributes.MouseIdentifier =
MOUSE_INPORT_HARDWARE;
break;
} else {
InpPrint((
1,
"INPORT-InpConfiguration: IoQueryDeviceDescription for bus type %d failed\n",
interfaceType
));
}
}
}
VOID
InpDisableInterrupts(
IN PVOID Context
)
/*++
Routine Description:
This routine is called from StartIo synchronously. It touches the
hardware to disable interrupts.
Arguments:
Context - Pointer to the device extension.
Return Value:
None.
--*/
{
PUCHAR port;
PLONG enableCount;
UCHAR mode;
//
// Decrement the reference count for device enables.
//
enableCount = &((PDEVICE_EXTENSION) Context)->MouseEnableCount;
*enableCount = *enableCount - 1;
if (*enableCount == 0) {
//
// Get the port register address.
//
port = ((PDEVICE_EXTENSION) Context)->Configuration.DeviceRegisters[0];
//
// Select the mode register as the current data register.
//
WRITE_PORT_UCHAR((PUCHAR) port, INPORT_MODE_REGISTER);
//
// Read the current mode.
//
mode = READ_PORT_UCHAR((PUCHAR) (port + INPORT_DATA_REGISTER_1));
//
// Rewrite the mode byte with the interrupt disabled.
//
WRITE_PORT_UCHAR(
(PUCHAR) (port + INPORT_DATA_REGISTER_1),
(UCHAR) (mode & ~INPORT_DATA_INTERRUPT_ENABLE)
);
}
}
VOID
InpEnableInterrupts(
IN PVOID Context
)
/*++
Routine Description:
This routine is called from StartIo synchronously. It touches the
hardware to enable interrupts.
Arguments:
Context - Pointer to the device extension.
Return Value:
None.
--*/
{
PUCHAR port;
PLONG enableCount;
UCHAR mode;
enableCount = &((PDEVICE_EXTENSION) Context)->MouseEnableCount;
if (*enableCount == 0) {
//
// Get the port register address.
//
port = ((PDEVICE_EXTENSION) Context)->Configuration.DeviceRegisters[0];
//
// Select the mode register as the current data register.
//
WRITE_PORT_UCHAR((PUCHAR) port, INPORT_MODE_REGISTER);
//
// Read the current mode.
//
mode = READ_PORT_UCHAR((PUCHAR) (port + INPORT_DATA_REGISTER_1));
//
// Rewrite the mode byte with the interrupt enabled.
//
WRITE_PORT_UCHAR(
(PUCHAR) (port + INPORT_DATA_REGISTER_1),
(UCHAR) (mode | INPORT_DATA_INTERRUPT_ENABLE)
);
}
//
// Increment the reference count for device enables.
//
*enableCount = *enableCount + 1;
}
NTSTATUS
InpInitializeHardware(
IN PDEVICE_OBJECT DeviceObject
)
/*++
Routine Description:
This routine initializes the Inport mouse. Note that this routine is
only called at initialization time, so synchronization is not required.
Arguments:
DeviceObject - Pointer to the device object.
Return Value:
None.
--*/
{
PDEVICE_EXTENSION deviceExtension;
PUCHAR mousePort;
NTSTATUS status = STATUS_SUCCESS;
InpPrint((2, "INPORT-InpInitializeHardware: enter\n"));
//
// Grab useful configuration parameters from the device extension.
//
deviceExtension = DeviceObject->DeviceExtension;
mousePort = deviceExtension->Configuration.DeviceRegisters[0];
//
// Reset the Inport chip, leaving interrupts off.
//
WRITE_PORT_UCHAR((PUCHAR) mousePort, INPORT_RESET);
//
// Select the mode register as the current data register. Set the
// Inport mouse up for quadrature mode, and set the sample
// rate (i.e., the interrupt Hz rate). Leave interrupts disabled.
//
WRITE_PORT_UCHAR((PUCHAR) mousePort, INPORT_MODE_REGISTER);
WRITE_PORT_UCHAR(
(PUCHAR) ((ULONG)mousePort + INPORT_DATA_REGISTER_1),
(UCHAR) (deviceExtension->Configuration.HzMode
| INPORT_MODE_QUADRATURE)
);
InpPrint((2, "INPORT-InpInitializeHardware: exit\n"));
return(status);
}
NTSTATUS
InpPeripheralCallout(
IN PVOID Context,
IN PUNICODE_STRING PathName,
IN INTERFACE_TYPE BusType,
IN ULONG BusNumber,
IN PKEY_VALUE_FULL_INFORMATION *BusInformation,
IN CONFIGURATION_TYPE ControllerType,
IN ULONG ControllerNumber,
IN PKEY_VALUE_FULL_INFORMATION *ControllerInformation,
IN CONFIGURATION_TYPE PeripheralType,
IN ULONG PeripheralNumber,
IN PKEY_VALUE_FULL_INFORMATION *PeripheralInformation
)
/*++
Routine Description:
This is the callout routine sent as a parameter to
IoQueryDeviceDescription. It grabs the pointer controller and
peripheral configuration information.
Arguments:
Context - Context parameter that was passed in by the routine
that called IoQueryDeviceDescription.
PathName - The full pathname for the registry key.
BusType - Bus interface type (Isa, Eisa, Mca, etc.).
BusNumber - The bus sub-key (0, 1, etc.).
BusInformation - Pointer to the array of pointers to the full value
information for the bus.
ControllerType - The controller type (should be PointerController).
ControllerNumber - The controller sub-key (0, 1, etc.).
ControllerInformation - Pointer to the array of pointers to the full
value information for the controller key.
PeripheralType - The peripheral type (should be PointerPeripheral).
PeripheralNumber - The peripheral sub-key.
PeripheralInformation - Pointer to the array of pointers to the full
value information for the peripheral key.
Return Value:
None. If successful, will have the following side-effects:
- Sets DeviceObject->DeviceExtension->HardwarePresent.
- Sets configuration fields in
DeviceObject->DeviceExtension->Configuration.
--*/
{
PDEVICE_EXTENSION deviceExtension;
PINPORT_CONFIGURATION_INFORMATION configuration;
UNICODE_STRING unicodeIdentifier;
PUCHAR controllerData;
NTSTATUS status = STATUS_SUCCESS;
ULONG i;
ULONG listCount;
PCM_PARTIAL_RESOURCE_DESCRIPTOR resourceDescriptor;
ANSI_STRING ansiString;
BOOLEAN defaultInterruptShare;
KINTERRUPT_MODE defaultInterruptMode;
InpPrint((
1,
"INPORT-InpPeripheralCallout: Path @ 0x%x, Bus Type 0x%x, Bus Number 0x%x\n",
PathName, BusType, BusNumber
));
InpPrint((
1,
" Controller Type 0x%x, Controller Number 0x%x, Controller info @ 0x%x\n",
ControllerType, ControllerNumber, ControllerInformation
));
InpPrint((
1,
" Peripheral Type 0x%x, Peripheral Number 0x%x, Peripheral info @ 0x%x\n",
PeripheralType, PeripheralNumber, PeripheralInformation
));
//
// Get the length of the peripheral identifier information.
//
unicodeIdentifier.Length =
(*(PeripheralInformation + IoQueryDeviceIdentifier))->DataLength;
//
// If we already have the configuration information for the
// mouse peripheral, or if the peripheral identifier is missing,
// just return.
//
deviceExtension = (PDEVICE_EXTENSION) Context;
if ((deviceExtension->HardwarePresent) || (unicodeIdentifier.Length == 0)){
return (status);
}
configuration = &deviceExtension->Configuration;
//
// Get the identifier information for the peripheral.
//
unicodeIdentifier.MaximumLength = unicodeIdentifier.Length;
unicodeIdentifier.Buffer = (PWSTR) (((PUCHAR)(*(PeripheralInformation +
IoQueryDeviceIdentifier))) +
(*(PeripheralInformation +
IoQueryDeviceIdentifier))->DataOffset);
InpPrint((
1,
"INPORT-InpPeripheralCallout: Mouse type %ws\n",
unicodeIdentifier.Buffer
));
//
// Verify that this is an Inport mouse.
//
status = RtlUnicodeStringToAnsiString(
&ansiString,
&unicodeIdentifier,
TRUE
);
if (!NT_SUCCESS(status)) {
InpPrint((
1,
"INPORT-InpPeripheralCallout: Could not convert identifier to Ansi\n"
));
return(status);
}
if (strstr(ansiString.Buffer, "INPORT")) {
//
// There is an Inport mouse present.
//
deviceExtension->HardwarePresent = TRUE;
}
RtlFreeAnsiString(&ansiString);
if (!deviceExtension->HardwarePresent) {
return(status);
}
//
// Get the bus information.
//
configuration->InterfaceType = BusType;
configuration->BusNumber = BusNumber;
configuration->FloatingSave = INPORT_FLOATING_SAVE;
if (BusType == MicroChannel) {
defaultInterruptShare = TRUE;
defaultInterruptMode = LevelSensitive;
} else {
defaultInterruptShare = INPORT_INTERRUPT_SHARE;
defaultInterruptMode = INPORT_INTERRUPT_MODE;
}
//
// Look through the resource list for interrupt and port
// configuration information.
//
if ((*(ControllerInformation + IoQueryDeviceConfigurationData))->DataLength != 0){
controllerData = ((PUCHAR) (*(ControllerInformation +
IoQueryDeviceConfigurationData))) +
(*(ControllerInformation +
IoQueryDeviceConfigurationData))->DataOffset;
controllerData += FIELD_OFFSET(CM_FULL_RESOURCE_DESCRIPTOR,
PartialResourceList);
listCount = ((PCM_PARTIAL_RESOURCE_LIST) controllerData)->Count;
resourceDescriptor =
((PCM_PARTIAL_RESOURCE_LIST) controllerData)->PartialDescriptors;
for (i = 0; i < listCount; i++, resourceDescriptor++) {
switch(resourceDescriptor->Type) {
case CmResourceTypePort:
//
// Copy the port information. Note that we only expect to
// find one port range for the Inport mouse.
//
ASSERT(configuration->PortListCount == 0);
configuration->PortList[configuration->PortListCount] =
*resourceDescriptor;
configuration->PortList[configuration->PortListCount].ShareDisposition =
INPORT_REGISTER_SHARE? CmResourceShareShared:
CmResourceShareDeviceExclusive;
configuration->PortListCount += 1;
break;
case CmResourceTypeInterrupt:
//
// Copy the interrupt information.
//
configuration->MouseInterrupt = *resourceDescriptor;
configuration->MouseInterrupt.ShareDisposition =
defaultInterruptShare? CmResourceShareShared :
CmResourceShareDeviceExclusive;
break;
default:
break;
}
}
}
//
// If no interrupt configuration information was found, use the
// driver defaults.
//
if (!(configuration->MouseInterrupt.Type & CmResourceTypeInterrupt)) {
InpPrint((
1,
"INPORT-InpPeripheralCallout: Using default mouse interrupt config\n"
));
configuration->MouseInterrupt.Type = CmResourceTypeInterrupt;
configuration->MouseInterrupt.ShareDisposition =
defaultInterruptShare? CmResourceShareShared :
CmResourceShareDeviceExclusive;
configuration->MouseInterrupt.Flags =
(defaultInterruptMode == Latched)? CM_RESOURCE_INTERRUPT_LATCHED :
CM_RESOURCE_INTERRUPT_LEVEL_SENSITIVE;
configuration->MouseInterrupt.u.Interrupt.Level = MOUSE_IRQL;
configuration->MouseInterrupt.u.Interrupt.Vector = MOUSE_VECTOR;
}
InpPrint((
1,
"INPORT-InpPeripheralCallout: Mouse interrupt config --\n"
));
InpPrint((
1,
"%s, %s, Irq = %d\n",
configuration->MouseInterrupt.ShareDisposition == CmResourceShareShared?
"Sharable" : "NonSharable",
configuration->MouseInterrupt.Flags == CM_RESOURCE_INTERRUPT_LATCHED?
"Latched" : "Level Sensitive",
configuration->MouseInterrupt.u.Interrupt.Vector
));
//
// If no port configuration information was found, use the
// driver defaults.
//
if (configuration->PortListCount == 0) {
//
// No port configuration information was found, so use
// the driver defaults.
//
InpPrint((
1,
"INPORT-InpPeripheralCallout: Using default port config\n"
));
configuration->PortList[0].Type = CmResourceTypePort;
configuration->PortList[0].Flags = INPORT_PORT_TYPE;
configuration->PortList[0].Flags = CM_RESOURCE_PORT_IO;
configuration->PortList[0].ShareDisposition =
INPORT_REGISTER_SHARE? CmResourceShareShared:
CmResourceShareDeviceExclusive;
configuration->PortList[0].u.Port.Start.LowPart =
INPORT_PHYSICAL_BASE;
configuration->PortList[0].u.Port.Start.HighPart = 0;
configuration->PortList[0].u.Port.Length = INPORT_REGISTER_LENGTH;
configuration->PortListCount = 1;
}
for (i = 0; i < configuration->PortListCount; i++) {
InpPrint((
1,
"%s, Ports 0x%x - 0x%x\n",
configuration->PortList[i].ShareDisposition
== CmResourceShareShared? "Sharable" : "NonSharable",
configuration->PortList[i].u.Port.Start.LowPart,
configuration->PortList[i].u.Port.Start.LowPart +
configuration->PortList[i].u.Port.Length - 1
));
}
return(status);
}
VOID
InpServiceParameters(
IN PDEVICE_EXTENSION DeviceExtension,
IN PUNICODE_STRING RegistryPath,
IN PUNICODE_STRING DeviceName
)
/*++
Routine Description:
This routine retrieves this driver's service parameters information
from the registry.
Arguments:
DeviceExtension - Pointer to the device extension.
RegistryPath - Pointer to the null-terminated Unicode name of the
registry path for this driver.
DeviceName - Pointer to the Unicode string that will receive
the port device name.
Return Value:
None. As a side-effect, sets fields in DeviceExtension->Configuration.
--*/
{
PINPORT_CONFIGURATION_INFORMATION configuration;
PRTL_QUERY_REGISTRY_TABLE parameters = NULL;
UNICODE_STRING parametersPath;
ULONG defaultDataQueueSize = DATA_QUEUE_SIZE;
ULONG numberOfButtons = MOUSE_NUMBER_OF_BUTTONS;
USHORT defaultNumberOfButtons = MOUSE_NUMBER_OF_BUTTONS;
ULONG sampleRate = MOUSE_SAMPLE_RATE_50HZ;
USHORT defaultSampleRate = MOUSE_SAMPLE_RATE_50HZ;
ULONG hzMode = INPORT_MODE_50HZ;
USHORT defaultHzMode = INPORT_MODE_50HZ;
UNICODE_STRING defaultUnicodeName;
NTSTATUS status = STATUS_SUCCESS;
PWSTR path = NULL;
USHORT queriesPlusOne = 6;
configuration = &DeviceExtension->Configuration;
parametersPath.Buffer = NULL;
//
// Registry path is already null-terminated, so just use it.
//
path = RegistryPath->Buffer;
if (NT_SUCCESS(status)) {
//
// Allocate the Rtl query table.
//
parameters = ExAllocatePool(
PagedPool,
sizeof(RTL_QUERY_REGISTRY_TABLE) * queriesPlusOne
);
if (!parameters) {
InpPrint((
1,
"INPORT-InpServiceParameters: Couldn't allocate table for Rtl query to parameters for %ws\n",
path
));
status = STATUS_UNSUCCESSFUL;
} else {
RtlZeroMemory(
parameters,
sizeof(RTL_QUERY_REGISTRY_TABLE) * queriesPlusOne
);
//
// Form a path to this driver's Parameters subkey.
//
RtlInitUnicodeString(
¶metersPath,
NULL
);
parametersPath.MaximumLength = RegistryPath->Length +
sizeof(L"\\Parameters");
parametersPath.Buffer = ExAllocatePool(
PagedPool,
parametersPath.MaximumLength
);
if (!parametersPath.Buffer) {
InpPrint((
1,
"INPORT-InpServiceParameters: Couldn't allocate string for path to parameters for %ws\n",
path
));
status = STATUS_UNSUCCESSFUL;
}
}
}
if (NT_SUCCESS(status)) {
//
// Form the parameters path.
//
RtlZeroMemory(
parametersPath.Buffer,
parametersPath.MaximumLength
);
RtlAppendUnicodeToString(
¶metersPath,
path
);
RtlAppendUnicodeToString(
¶metersPath,
L"\\Parameters"
);
InpPrint((
1,
"INPORT-InpServiceParameters: parameters path is %ws\n",
parametersPath.Buffer
));
//
// Form the default pointer port device name, in case it is not
// specified in the registry.
//
RtlInitUnicodeString(
&defaultUnicodeName,
DD_POINTER_PORT_BASE_NAME_U
);
//
// Gather all of the "user specified" information from
// the registry.
//
parameters[0].Flags = RTL_QUERY_REGISTRY_DIRECT;
parameters[0].Name = L"MouseDataQueueSize";
parameters[0].EntryContext =
&configuration->MouseAttributes.InputDataQueueLength;
parameters[0].DefaultType = REG_DWORD;
parameters[0].DefaultData = &defaultDataQueueSize;
parameters[0].DefaultLength = sizeof(ULONG);
parameters[1].Flags = RTL_QUERY_REGISTRY_DIRECT;
parameters[1].Name = L"NumberOfButtons";
parameters[1].EntryContext = &numberOfButtons;
parameters[1].DefaultType = REG_DWORD;
parameters[1].DefaultData = &defaultNumberOfButtons;
parameters[1].DefaultLength = sizeof(USHORT);
parameters[2].Flags = RTL_QUERY_REGISTRY_DIRECT;
parameters[2].Name = L"SampleRate";
parameters[2].EntryContext = &sampleRate;
parameters[2].DefaultType = REG_DWORD;
parameters[2].DefaultData = &defaultSampleRate;
parameters[2].DefaultLength = sizeof(USHORT);
parameters[3].Flags = RTL_QUERY_REGISTRY_DIRECT;
parameters[3].Name = L"HzMode";
parameters[3].EntryContext = &hzMode;
parameters[3].DefaultType = REG_DWORD;
parameters[3].DefaultData = &defaultHzMode;
parameters[3].DefaultLength = sizeof(USHORT);
parameters[4].Flags = RTL_QUERY_REGISTRY_DIRECT;
parameters[4].Name = L"PointerDeviceBaseName";
parameters[4].EntryContext = DeviceName;
parameters[4].DefaultType = REG_SZ;
parameters[4].DefaultData = defaultUnicodeName.Buffer;
parameters[4].DefaultLength = 0;
status = RtlQueryRegistryValues(
RTL_REGISTRY_ABSOLUTE,
parametersPath.Buffer,
parameters,
NULL,
NULL
);
if (!NT_SUCCESS(status)) {
InpPrint((
1,
"INPORT-InpServiceParameters: RtlQueryRegistryValues failed with 0x%x\n",
status
));
}
}
if (!NT_SUCCESS(status)) {
//
// Go ahead and assign driver defaults.
//
configuration->MouseAttributes.InputDataQueueLength =
defaultDataQueueSize;
RtlCopyUnicodeString(DeviceName, &defaultUnicodeName);
}
InpPrint((
1,
"INPORT-InpServiceParameters: Pointer port base name = %ws\n",
DeviceName->Buffer
));
if (configuration->MouseAttributes.InputDataQueueLength == 0) {
InpPrint((
1,
"INPORT-InpServiceParameters: overriding MouseInputDataQueueLength = 0x%x\n",
configuration->MouseAttributes.InputDataQueueLength
));
configuration->MouseAttributes.InputDataQueueLength =
defaultDataQueueSize;
}
configuration->MouseAttributes.InputDataQueueLength *=
sizeof(MOUSE_INPUT_DATA);
InpPrint((
1,
"INPORT-InpServiceParameters: MouseInputDataQueueLength = 0x%x\n",
configuration->MouseAttributes.InputDataQueueLength
));
configuration->MouseAttributes.NumberOfButtons = numberOfButtons;
InpPrint((
1,
"INPORT-InpServiceParameters: NumberOfButtons = %d\n",
configuration->MouseAttributes.NumberOfButtons
));
configuration->MouseAttributes.SampleRate = sampleRate;
InpPrint((
1,
"INPORT-InpServiceParameters: SampleRate = %d\n",
configuration->MouseAttributes.SampleRate
));
configuration->HzMode = hzMode;
InpPrint((
1,
"INPORT-InpServiceParameters: HzMode = %d\n",
configuration->HzMode
));
//
// Free the allocated memory before returning.
//
if (parametersPath.Buffer)
ExFreePool(parametersPath.Buffer);
if (parameters)
ExFreePool(parameters);
}
#endif
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