480 lines
12 KiB
C
480 lines
12 KiB
C
|
/*++
|
||
|
|
|
||
|
|
Copyright (c) 1990-1998 Microsoft Corporation, All Rights Reserved
|
||
|
|
Copyright (c) 1993 Logitech Inc.
|
||
|
|
|
||
|
|
Module Name:
|
||
|
|
|
||
|
|
sermcmn.c
|
||
|
|
|
||
|
|
Abstract:
|
||
|
|
|
||
|
|
The common portions of the Microsoft serial (i8250) mouse port driver.
|
||
|
|
This file should not require modification to support new mice
|
||
|
|
that are similar to the serial mouse.
|
||
|
|
|
||
|
|
Environment:
|
||
|
|
|
||
|
|
Kernel mode only.
|
||
|
|
|
||
|
|
Notes:
|
||
|
|
|
||
|
|
NOTES: (Future/outstanding issues)
|
||
|
|
|
||
|
|
- Powerfail not implemented.
|
||
|
|
|
||
|
|
- IOCTL_INTERNAL_MOUSE_DISCONNECT has not been implemented. It's not
|
||
|
|
needed until the class unload routine is implemented. Right now,
|
||
|
|
we don't want to allow the mouse class driver to unload.
|
||
|
|
|
||
|
|
- Consolidate duplicate code, where possible and appropriate.
|
||
|
|
|
||
|
|
Revision History:
|
||
|
|
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
#include "stdarg.h"
|
||
|
|
#include "stdio.h"
|
||
|
|
#include "string.h"
|
||
|
|
#include "ntddk.h"
|
||
|
|
#include "mouser.h"
|
||
|
|
#include "sermlog.h"
|
||
|
|
#include "debug.h"
|
||
|
|
|
||
|
|
#ifdef ALLOC_PRAGMA
|
||
|
|
#pragma alloc_text(PAGE, SerialMouseCreate)
|
||
|
|
#pragma alloc_text(PAGE, SerialMouseClose)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
NTSTATUS
|
||
|
|
SerialMouseFlush(
|
||
|
|
IN PDEVICE_OBJECT DeviceObject,
|
||
|
|
IN PIRP Irp
|
||
|
|
)
|
||
|
|
{
|
||
|
|
PDEVICE_EXTENSION deviceExtension;
|
||
|
|
NTSTATUS status;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Get a pointer to the device extension.
|
||
|
|
//
|
||
|
|
deviceExtension = DeviceObject->DeviceExtension;
|
||
|
|
|
||
|
|
Print(deviceExtension, DBG_UART_INFO, ("Flush \n"));
|
||
|
|
|
||
|
|
status = IoAcquireRemoveLock(&deviceExtension->RemoveLock, Irp);
|
||
|
|
if (!NT_SUCCESS(status)) {
|
||
|
|
return status;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Fire and forget
|
||
|
|
//
|
||
|
|
IoSkipCurrentIrpStackLocation(Irp);
|
||
|
|
status = IoCallDriver(deviceExtension->TopOfStack, Irp);
|
||
|
|
|
||
|
|
IoReleaseRemoveLock(&deviceExtension->RemoveLock, Irp);
|
||
|
|
|
||
|
|
return status;
|
||
|
|
}
|
||
|
|
|
||
|
|
NTSTATUS
|
||
|
|
SerialMouseInternalDeviceControl(
|
||
|
|
IN PDEVICE_OBJECT DeviceObject,
|
||
|
|
IN PIRP Irp
|
||
|
|
)
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
This routine is the dispatch routine for internal device control requests.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
DeviceObject - Pointer to the device object.
|
||
|
|
|
||
|
|
Irp - Pointer to the request packet.
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
Status is returned.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
PIO_STACK_LOCATION irpSp;
|
||
|
|
PDEVICE_EXTENSION deviceExtension;
|
||
|
|
NTSTATUS status;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Get a pointer to the device extension.
|
||
|
|
//
|
||
|
|
deviceExtension = DeviceObject->DeviceExtension;
|
||
|
|
|
||
|
|
Print(deviceExtension, DBG_IOCTL_TRACE, ("IOCTL, enter\n"));
|
||
|
|
|
||
|
|
//
|
||
|
|
// Initialize the returned Information field.
|
||
|
|
//
|
||
|
|
Irp->IoStatus.Information = 0;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Get a pointer to the current parameters for this request. The
|
||
|
|
// information is contained in the current stack location.
|
||
|
|
//
|
||
|
|
irpSp = IoGetCurrentIrpStackLocation(Irp);
|
||
|
|
|
||
|
|
status = IoAcquireRemoveLock(&deviceExtension->RemoveLock, Irp);
|
||
|
|
if (!NT_SUCCESS(status)) {
|
||
|
|
Irp->IoStatus.Status = status;
|
||
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
||
|
|
return status;
|
||
|
|
}
|
||
|
|
|
||
|
|
ASSERT (deviceExtension->Started ||
|
||
|
|
(IOCTL_INTERNAL_MOUSE_CONNECT ==
|
||
|
|
irpSp->Parameters.DeviceIoControl.IoControlCode));
|
||
|
|
|
||
|
|
|
||
|
|
//
|
||
|
|
// Case on the device control subfunction that is being performed by the
|
||
|
|
// requestor.
|
||
|
|
//
|
||
|
|
switch (irpSp->Parameters.DeviceIoControl.IoControlCode) {
|
||
|
|
|
||
|
|
//
|
||
|
|
// Connect a mouse class device driver to the port driver.
|
||
|
|
//
|
||
|
|
|
||
|
|
case IOCTL_INTERNAL_MOUSE_CONNECT:
|
||
|
|
|
||
|
|
Print(deviceExtension, DBG_IOCTL_INFO, ("connect\n"));
|
||
|
|
|
||
|
|
//
|
||
|
|
// Only allow one connection.
|
||
|
|
//
|
||
|
|
if (deviceExtension->ConnectData.ClassService != NULL) {
|
||
|
|
|
||
|
|
Print(deviceExtension, DBG_IOCTL_ERROR, ("error - already connected\n"));
|
||
|
|
|
||
|
|
status = STATUS_SHARING_VIOLATION;
|
||
|
|
break;
|
||
|
|
|
||
|
|
}
|
||
|
|
else if (irpSp->Parameters.DeviceIoControl.InputBufferLength <
|
||
|
|
sizeof(CONNECT_DATA)) {
|
||
|
|
|
||
|
|
Print(deviceExtension, DBG_IOCTL_ERROR,
|
||
|
|
("connect error - invalid buffer length\n"));
|
||
|
|
|
||
|
|
status = STATUS_INVALID_PARAMETER;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Copy the connection parameters to the device extension.
|
||
|
|
//
|
||
|
|
|
||
|
|
deviceExtension->ConnectData =
|
||
|
|
*((PCONNECT_DATA) (irpSp->Parameters.DeviceIoControl.Type3InputBuffer));
|
||
|
|
|
||
|
|
status = STATUS_SUCCESS;
|
||
|
|
break;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Disconnect a mouse class device driver from the port driver.
|
||
|
|
//
|
||
|
|
// NOTE: Not implemented.
|
||
|
|
//
|
||
|
|
|
||
|
|
case IOCTL_INTERNAL_MOUSE_DISCONNECT:
|
||
|
|
|
||
|
|
Print(deviceExtension, DBG_IOCTL_INFO, ("disconnect\n"));
|
||
|
|
TRAP();
|
||
|
|
|
||
|
|
//
|
||
|
|
// Not implemented.
|
||
|
|
//
|
||
|
|
// To implement, code the following:
|
||
|
|
// ---------------------------------
|
||
|
|
// o ENSURE that we are NOT enabled (extension->EnableCount);
|
||
|
|
// o If we are, then (a) return STATUS_UNSUCCESSFUL, or
|
||
|
|
// (b) disable all devices immediately; see
|
||
|
|
// DISABLE IOCTL call for necessary code.
|
||
|
|
// o SYNCHRONIZE with the mouse read completion routine (must
|
||
|
|
// protect the callback pointer from being dereferenced when
|
||
|
|
// it becomes null). Note that no mechanism currently exists
|
||
|
|
// for this.
|
||
|
|
// o CLEAR the connection parameters in the device extension;
|
||
|
|
// ie. extension->ConnectData = { 0, 0 }
|
||
|
|
// o RELEASE the synchronizing lock.
|
||
|
|
// o RETURN STATUS_SUCCESS.
|
||
|
|
//
|
||
|
|
|
||
|
|
//
|
||
|
|
// Clear the connection parameters in the device extension.
|
||
|
|
// NOTE: Must synchronize this with the mouse ISR.
|
||
|
|
//
|
||
|
|
//
|
||
|
|
//deviceExtension->ConnectData.ClassDeviceObject =
|
||
|
|
// Null;
|
||
|
|
//deviceExtension->ConnectData.ClassService =
|
||
|
|
// Null;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Set the completion status.
|
||
|
|
//
|
||
|
|
|
||
|
|
status = STATUS_NOT_IMPLEMENTED;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case IOCTL_INTERNAL_MOUSE_ENABLE:
|
||
|
|
//
|
||
|
|
// Enable interrupts
|
||
|
|
//
|
||
|
|
Print (deviceExtension, DBG_IOCTL_ERROR,
|
||
|
|
("ERROR: PnP => use create not enable! \n"));
|
||
|
|
status = STATUS_NOT_SUPPORTED;
|
||
|
|
|
||
|
|
break;
|
||
|
|
|
||
|
|
case IOCTL_INTERNAL_MOUSE_DISABLE:
|
||
|
|
//
|
||
|
|
// Disable Mouse interrupts
|
||
|
|
//
|
||
|
|
Print(deviceExtension, DBG_IOCTL_ERROR,
|
||
|
|
("ERROR: PnP => use close not Disable! \n"));
|
||
|
|
status = STATUS_NOT_SUPPORTED;
|
||
|
|
|
||
|
|
break;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Query the mouse attributes. First check for adequate buffer
|
||
|
|
// length. Then, copy the mouse attributes from the device
|
||
|
|
// extension to the output buffer.
|
||
|
|
//
|
||
|
|
|
||
|
|
case IOCTL_MOUSE_QUERY_ATTRIBUTES:
|
||
|
|
|
||
|
|
Print(deviceExtension, DBG_IOCTL_INFO, ("query attributes\n"));
|
||
|
|
|
||
|
|
if (irpSp->Parameters.DeviceIoControl.OutputBufferLength <
|
||
|
|
sizeof(MOUSE_ATTRIBUTES)) {
|
||
|
|
Print(deviceExtension, DBG_IOCTL_ERROR, ("QA buffer too small\n"));
|
||
|
|
status = STATUS_BUFFER_TOO_SMALL;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
//
|
||
|
|
// Copy the attributes from the DeviceExtension to the
|
||
|
|
// buffer.
|
||
|
|
//
|
||
|
|
|
||
|
|
*(PMOUSE_ATTRIBUTES) Irp->AssociatedIrp.SystemBuffer =
|
||
|
|
deviceExtension->MouseAttributes;
|
||
|
|
|
||
|
|
Irp->IoStatus.Information = sizeof(MOUSE_ATTRIBUTES);
|
||
|
|
status = STATUS_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
Print (deviceExtension, DBG_IOCTL_ERROR,
|
||
|
|
("ERROR: unknown IOCTL: 0x%x \n",
|
||
|
|
irpSp->Parameters.DeviceIoControl.IoControlCode));
|
||
|
|
TRAP();
|
||
|
|
|
||
|
|
status = STATUS_INVALID_DEVICE_REQUEST;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
Irp->IoStatus.Status = status;
|
||
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
||
|
|
|
||
|
|
IoReleaseRemoveLock(&deviceExtension->RemoveLock, Irp);
|
||
|
|
|
||
|
|
Print(deviceExtension, DBG_IOCTL_TRACE, ("IOCTL, exit (%x)\n", status));
|
||
|
|
|
||
|
|
return status;
|
||
|
|
}
|
||
|
|
|
||
|
|
NTSTATUS
|
||
|
|
SerialMouseClose(
|
||
|
|
IN PDEVICE_OBJECT DeviceObject,
|
||
|
|
IN PIRP Irp
|
||
|
|
)
|
||
|
|
{
|
||
|
|
PDEVICE_EXTENSION deviceExtension;
|
||
|
|
NTSTATUS status;
|
||
|
|
|
||
|
|
PAGED_CODE();
|
||
|
|
|
||
|
|
deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
|
||
|
|
|
||
|
|
Print(deviceExtension, DBG_CC_NOISE,
|
||
|
|
("Close: enable count is %d\n", deviceExtension->EnableCount));
|
||
|
|
|
||
|
|
ASSERT(0 < deviceExtension->EnableCount);
|
||
|
|
|
||
|
|
status = IoAcquireRemoveLock(&deviceExtension->RemoveLock, Irp);
|
||
|
|
if (!NT_SUCCESS(status)) {
|
||
|
|
goto SerialMouseCloseReject;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Serial can only handle one create/close, all others fail. This is not
|
||
|
|
// true for mice though. Only send the last close on to serial.
|
||
|
|
//
|
||
|
|
if (0 == InterlockedDecrement(&deviceExtension->EnableCount)) {
|
||
|
|
Print(deviceExtension, DBG_PNP_INFO | DBG_CC_INFO,
|
||
|
|
("Cancelling and stopping detection for close\n"));
|
||
|
|
|
||
|
|
//
|
||
|
|
// Cleanup: cancel the read and stop detection
|
||
|
|
//
|
||
|
|
IoCancelIrp(deviceExtension->ReadIrp);
|
||
|
|
SerialMouseStopDetection(deviceExtension);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Restore the port to the state it was before we opened it
|
||
|
|
//
|
||
|
|
SerialMouseRestorePort(deviceExtension);
|
||
|
|
|
||
|
|
IoReleaseRemoveLock(&deviceExtension->RemoveLock, Irp);
|
||
|
|
|
||
|
|
IoSkipCurrentIrpStackLocation(Irp);
|
||
|
|
return IoCallDriver(deviceExtension->TopOfStack, Irp);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
Print(deviceExtension, DBG_CC_INFO,
|
||
|
|
("Close (%d)\n", deviceExtension->EnableCount));
|
||
|
|
|
||
|
|
status = STATUS_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
IoReleaseRemoveLock(&deviceExtension->RemoveLock, Irp);
|
||
|
|
|
||
|
|
SerialMouseCloseReject:
|
||
|
|
Irp->IoStatus.Status = status;
|
||
|
|
Irp->IoStatus.Information = 0;
|
||
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
||
|
|
|
||
|
|
return status;
|
||
|
|
}
|
||
|
|
|
||
|
|
NTSTATUS
|
||
|
|
SerialMouseCreate(
|
||
|
|
IN PDEVICE_OBJECT DeviceObject,
|
||
|
|
IN PIRP Irp
|
||
|
|
)
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
This is the dispatch routine for create/open requests.
|
||
|
|
These requests complete successfully.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
DeviceObject - Pointer to the device object.
|
||
|
|
|
||
|
|
Irp - Pointer to the request packet.
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
Status is returned.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
PIO_STACK_LOCATION irpSp = NULL;
|
||
|
|
NTSTATUS status = STATUS_SUCCESS;
|
||
|
|
PDEVICE_EXTENSION deviceExtension = NULL;
|
||
|
|
|
||
|
|
deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
|
||
|
|
|
||
|
|
Print(deviceExtension, DBG_CC_TRACE, ("Create: Enter.\n"));
|
||
|
|
|
||
|
|
Print(deviceExtension, DBG_CC_NOISE,
|
||
|
|
("Create: enable count is %d\n"));
|
||
|
|
|
||
|
|
//
|
||
|
|
// Get a pointer to the current parameters for this request. The
|
||
|
|
// information is contained in the current stack location.
|
||
|
|
//
|
||
|
|
irpSp = IoGetCurrentIrpStackLocation (Irp);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Determine if request is trying to open a subdirectory of the
|
||
|
|
// given device object. This is not allowed.
|
||
|
|
//
|
||
|
|
if (0 != irpSp->FileObject->FileName.Length) {
|
||
|
|
Print(deviceExtension, DBG_CC_ERROR,
|
||
|
|
("ERROR: Create Access Denied.\n"));
|
||
|
|
|
||
|
|
status = STATUS_ACCESS_DENIED;
|
||
|
|
goto SerialMouseCreateReject;
|
||
|
|
}
|
||
|
|
|
||
|
|
status = IoAcquireRemoveLock(&deviceExtension->RemoveLock, Irp);
|
||
|
|
if (!NT_SUCCESS(status)) {
|
||
|
|
goto SerialMouseCreateReject;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (NULL == deviceExtension->ConnectData.ClassService) {
|
||
|
|
//
|
||
|
|
// No Connection yet. How can we be enabled?
|
||
|
|
//
|
||
|
|
Print(deviceExtension, DBG_IOCTL_ERROR,
|
||
|
|
("ERROR: enable before connect!\n"));
|
||
|
|
status = STATUS_UNSUCCESSFUL;
|
||
|
|
}
|
||
|
|
else if ( 1 == InterlockedIncrement(&deviceExtension->EnableCount)) {
|
||
|
|
//
|
||
|
|
// send it down the stack
|
||
|
|
//
|
||
|
|
status = SerialMouseSendIrpSynchronously(deviceExtension->TopOfStack,
|
||
|
|
Irp,
|
||
|
|
TRUE);
|
||
|
|
|
||
|
|
if (NT_SUCCESS(status) && NT_SUCCESS(Irp->IoStatus.Status)) {
|
||
|
|
//
|
||
|
|
// Everything worked, start up the mouse.
|
||
|
|
//
|
||
|
|
status = SerialMouseStartDevice(deviceExtension, Irp, TRUE);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
//
|
||
|
|
// Create failed, decrement the enable count back to zero
|
||
|
|
//
|
||
|
|
InterlockedDecrement(&deviceExtension->EnableCount);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
//
|
||
|
|
// Serial only handles one create/close. Don't send this one down the
|
||
|
|
// stack, it will fail. The call to InterlockedIncrement above
|
||
|
|
// correctly adjusts the count.
|
||
|
|
//
|
||
|
|
ASSERT (deviceExtension->EnableCount >= 1);
|
||
|
|
|
||
|
|
status = STATUS_SUCCESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
IoReleaseRemoveLock(&deviceExtension->RemoveLock, Irp);
|
||
|
|
|
||
|
|
SerialMouseCreateReject:
|
||
|
|
|
||
|
|
Irp->IoStatus.Status = status;
|
||
|
|
Irp->IoStatus.Information = 0;
|
||
|
|
IoCompleteRequest (Irp, IO_NO_INCREMENT);
|
||
|
|
|
||
|
|
Print(deviceExtension, DBG_CC_TRACE,
|
||
|
|
("SerialMouseCreate, 0x%x\n", status));
|
||
|
|
|
||
|
|
return status;
|
||
|
|
}
|