803 lines
21 KiB
C
803 lines
21 KiB
C
/*++
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Copyright (c) 1997-1999 Microsoft Corporation, All Rights Reserved
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Module Name:
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ptdrvpnp.c
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Abstract:
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This module contains general PnP code for the RDP remote port driver.
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Environment:
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Kernel mode.
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Revision History:
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02/12/99 - Initial Revision based on pnpi8042 driver
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--*/
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#include <precomp.h>
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#pragma hdrstop
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#include "ptdrvcom.h"
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, PtAddDevice)
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#pragma alloc_text(PAGE, PtManuallyRemoveDevice)
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#pragma alloc_text(PAGE, PtPnP)
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//#pragma alloc_text(PAGE, PtPower)
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#pragma alloc_text(PAGE, PtSendIrpSynchronously)
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#endif
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NTSTATUS
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PtAddDevice (
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IN PDRIVER_OBJECT Driver,
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IN PDEVICE_OBJECT PDO
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)
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/*++
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Routine Description:
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Adds a device to the stack and sets up the appropriate flags and
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device extension for the newly created device.
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Arguments:
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Driver - The driver object
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PDO - the device that we are attaching ourselves on top of
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Return Value:
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NTSTATUS result code.
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--*/
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{
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PCOMMON_DATA commonData;
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IO_ERROR_LOG_PACKET errorLogEntry;
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PDEVICE_OBJECT device;
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NTSTATUS status = STATUS_SUCCESS;
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ULONG maxSize;
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UNICODE_STRING fullRDPName;
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UNICODE_STRING baseRDPName;
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UNICODE_STRING deviceNameSuffix;
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PAGED_CODE();
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Print(DBG_PNP_TRACE, ("enter Add Device: %ld \n", Globals.ulDeviceNumber));
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//
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// Initialize the various unicode structures for forming the device name.
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//
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if (Globals.ulDeviceNumber == 0)
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RtlInitUnicodeString(&fullRDPName, RDP_CONSOLE_BASE_NAME0);
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else
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RtlInitUnicodeString(&fullRDPName, RDP_CONSOLE_BASE_NAME1);
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maxSize = sizeof(PORT_KEYBOARD_EXTENSION) > sizeof(PORT_MOUSE_EXTENSION) ?
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sizeof(PORT_KEYBOARD_EXTENSION) :
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sizeof(PORT_MOUSE_EXTENSION);
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status = IoCreateDevice(Driver, // driver
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maxSize, // size of extension
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NULL, // device name
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FILE_DEVICE_8042_PORT, // device type ?? unknown at this time!!!
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FILE_DEVICE_SECURE_OPEN,// device characteristics
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FALSE, // exclusive
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&device // new device
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);
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if (!NT_SUCCESS(status)) {
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Print(DBG_SS_TRACE, ("Add Device failed! (0x%x) \n", status));
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return status;
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}
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Globals.ulDeviceNumber++;
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RtlZeroMemory(device->DeviceExtension, maxSize);
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//
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// Set up the device type
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//
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*((ULONG *)(device->DeviceExtension)) = DEV_TYPE_PORT;
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commonData = GET_COMMON_DATA(device->DeviceExtension);
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RtlInitUnicodeString(&commonData->DeviceName, fullRDPName.Buffer);
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commonData->TopOfStack = IoAttachDeviceToDeviceStack(device, PDO);
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ASSERT(commonData->TopOfStack);
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commonData->Self = device;
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commonData->PDO = PDO;
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device->Flags |= DO_BUFFERED_IO;
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device->Flags &= ~DO_DEVICE_INITIALIZING;
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Print(DBG_PNP_TRACE, ("Add Device (0x%x)\n", status));
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return status;
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}
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NTSTATUS
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PtSendIrpSynchronously (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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Generic routine to send an irp DeviceObject and wait for its return up the
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device stack.
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Arguments:
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DeviceObject - The device object to which we want to send the Irp
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Irp - The Irp we want to send
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Return Value:
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return code from the Irp
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--*/
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{
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KEVENT event;
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NTSTATUS status;
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PAGED_CODE();
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KeInitializeEvent(&event,
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SynchronizationEvent,
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FALSE
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);
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IoCopyCurrentIrpStackLocationToNext(Irp);
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IoSetCompletionRoutine(Irp,
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PtPnPComplete,
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&event,
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TRUE,
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TRUE,
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TRUE
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);
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status = IoCallDriver(DeviceObject, Irp);
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//
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// Wait for lower drivers to be done with the Irp
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//
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if (status == STATUS_PENDING) {
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KeWaitForSingleObject(&event,
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Executive,
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KernelMode,
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FALSE,
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NULL
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);
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status = Irp->IoStatus.Status;
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}
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return status;
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}
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NTSTATUS
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PtPnPComplete (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp,
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IN PKEVENT Event
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)
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/*++
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Routine Description:
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Completion routine for all PnP IRPs
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Arguments:
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DeviceObject - Pointer to the DeviceObject
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Irp - Pointer to the request packet
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Event - The event to set once processing is complete
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Return Value:
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STATUS_SUCCESSFUL if successful,
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an valid NTSTATUS error code otherwise
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--*/
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{
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PIO_STACK_LOCATION stack;
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NTSTATUS status;
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UNREFERENCED_PARAMETER (DeviceObject);
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status = STATUS_SUCCESS;
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stack = IoGetCurrentIrpStackLocation(Irp);
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if (Irp->PendingReturned) {
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IoMarkIrpPending(Irp);
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}
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KeSetEvent(Event, 0, FALSE);
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return STATUS_MORE_PROCESSING_REQUIRED;
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}
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NTSTATUS
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PtPnP (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This is the dispatch routine for PnP requests
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Arguments:
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DeviceObject - Pointer to the device object
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Irp - Pointer to the request packet
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Return Value:
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STATUS_SUCCESSFUL if successful,
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an valid NTSTATUS error code otherwise
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--*/
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{
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PPORT_KEYBOARD_EXTENSION kbExtension;
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PPORT_MOUSE_EXTENSION mouseExtension;
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PCOMMON_DATA commonData;
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PIO_STACK_LOCATION stack;
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NTSTATUS status = STATUS_SUCCESS;
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KIRQL oldIrql;
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PAGED_CODE();
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commonData = GET_COMMON_DATA(DeviceObject->DeviceExtension);
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stack = IoGetCurrentIrpStackLocation(Irp);
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Print(DBG_PNP_TRACE,
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("PtPnP (%s), enter (min func=0x%x)\n",
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commonData->IsKeyboard ? "kb" : "mou",
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(ULONG) stack->MinorFunction
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));
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switch (stack->MinorFunction) {
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case IRP_MN_START_DEVICE:
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//
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// The device is starting.
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//
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// We cannot touch the device (send it any non pnp irps) until a
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// start device has been passed down to the lower drivers.
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//
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status = PtSendIrpSynchronously(commonData->TopOfStack, Irp);
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if (NT_SUCCESS(status) && NT_SUCCESS(Irp->IoStatus.Status)) {
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//
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// As we are successfully now back from our start device
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// we can do work.
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ExAcquireFastMutexUnsafe(&Globals.DispatchMutex);
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if (commonData->Started) {
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Print(DBG_PNP_ERROR,
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("received 1+ starts on %s\n",
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commonData->IsKeyboard ? "kb" : "mouse"
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));
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}
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else {
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//
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// commonData->IsKeyboard is set during
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// IOCTL_INTERNAL_KEYBOARD_CONNECT to TRUE and
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// IOCTL_INTERNAL_MOUSE_CONNECT to FALSE
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//
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if (commonData->IsKeyboard) {
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status = PtKeyboardStartDevice(
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(PPORT_KEYBOARD_EXTENSION) DeviceObject->DeviceExtension,
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stack->Parameters.StartDevice.AllocatedResourcesTranslated
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);
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}
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else {
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status = PtMouseStartDevice(
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(PPORT_MOUSE_EXTENSION) DeviceObject->DeviceExtension,
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stack->Parameters.StartDevice.AllocatedResourcesTranslated
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);
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}
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if (NT_SUCCESS(status)) {
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commonData->Started = TRUE;
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}
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}
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ExReleaseFastMutexUnsafe(&Globals.DispatchMutex);
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}
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//
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// We must now complete the IRP, since we stopped it in the
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// completetion routine with MORE_PROCESSING_REQUIRED.
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//
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Irp->IoStatus.Status = status;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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break;
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case IRP_MN_QUERY_PNP_DEVICE_STATE:
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status = PtSendIrpSynchronously(commonData->TopOfStack, Irp);
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//
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// If the lower filter does not support this Irp, this is
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// OK, we can ignore this error
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//
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if (status == STATUS_NOT_SUPPORTED ||
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status == STATUS_INVALID_DEVICE_REQUEST) {
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status = STATUS_SUCCESS;
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}
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//
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// do stuff here...
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//
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if (NT_SUCCESS(status)) {
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if (commonData->ManuallyRemoved &&
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!(commonData->IsKeyboard ? KEYBOARD_PRESENT():MOUSE_PRESENT())) {
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commonData->Started = FALSE;
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(PNP_DEVICE_STATE) Irp->IoStatus.Information |=
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(PNP_DEVICE_REMOVED | PNP_DEVICE_DONT_DISPLAY_IN_UI);
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}
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//
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// In all cases this device must be disableable
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//
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(PNP_DEVICE_STATE) Irp->IoStatus.Information &= ~PNP_DEVICE_NOT_DISABLEABLE;
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//
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// Don't show it in the device manager
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//
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(PNP_DEVICE_STATE) Irp->IoStatus.Information |= PNP_DEVICE_DONT_DISPLAY_IN_UI;
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} else {
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Print(DBG_PNP_ERROR,
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("error pending query pnp device state event (0x%x)\n",
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status
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));
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}
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//
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// Irp->IoStatus.Information will contain the new i/o resource
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// requirements list so leave it alone
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//
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Irp->IoStatus.Status = status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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break;
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//
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// Don't let either of the requests succeed, otherwise the kb/mouse
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// might be rendered useless.
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//
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// NOTE: this behavior is particular to i8042prt. Any other driver,
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// especially any other keyboard or port driver, should
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// succeed the query remove or stop. i8042prt has this different
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// behavior because of the shared I/O ports but independent interrupts.
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//
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// FURTHERMORE, if you allow the query to succeed, it should be sent
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// down the stack (see sermouse.sys for an example of how to do this)
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//
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case IRP_MN_QUERY_REMOVE_DEVICE:
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case IRP_MN_QUERY_STOP_DEVICE:
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status = (commonData->ManuallyRemoved ? STATUS_SUCCESS : STATUS_UNSUCCESSFUL);
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Irp->IoStatus.Status = status;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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break;
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//
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// PnP rules dictate we send the IRP down to the PDO first
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//
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case IRP_MN_CANCEL_REMOVE_DEVICE:
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case IRP_MN_CANCEL_STOP_DEVICE:
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status = PtSendIrpSynchronously(commonData->TopOfStack, Irp);
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//
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// If the lower filter does not support this Irp, this is
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// OK, we can ignore this error
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//
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if (status == STATUS_NOT_SUPPORTED ||
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status == STATUS_INVALID_DEVICE_REQUEST) {
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status = STATUS_SUCCESS;
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}
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Irp->IoStatus.Status = status;
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Irp->IoStatus.Information = 0;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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break;
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case IRP_MN_REMOVE_DEVICE:
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Print(DBG_PNP_TRACE, ("remove device\n"));
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if (commonData->Started && !commonData->ManuallyRemoved) {
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//
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// This should never happen. The only way we can get a remove is if
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// a start has failed.
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//
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// NOTE: Again, this should never happen for i8042prt, but any
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// other input port driver should allow itself to be removed
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// (see sermouse.sys on how to do this correctly)
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//
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Print(DBG_PNP_ERROR, ("Cannot remove a started device!!!\n"));
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ASSERT(FALSE);
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}
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if (commonData->Initialized) {
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IoWMIRegistrationControl(commonData->Self,
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WMIREG_ACTION_DEREGISTER
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);
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}
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ExAcquireFastMutexUnsafe(&Globals.DispatchMutex);
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if (commonData->IsKeyboard) {
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PtKeyboardRemoveDevice(DeviceObject);
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}
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ExReleaseFastMutexUnsafe(&Globals.DispatchMutex);
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//
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// Nothing has been allocated or connected
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//
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Irp->IoStatus.Status = STATUS_SUCCESS;
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IoSkipCurrentIrpStackLocation(Irp);
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status = IoCallDriver(commonData->TopOfStack, Irp);
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IoDetachDevice(commonData->TopOfStack);
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IoDeleteDevice(DeviceObject);
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break;
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case IRP_MN_STOP_DEVICE:
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case IRP_MN_QUERY_DEVICE_RELATIONS:
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case IRP_MN_QUERY_INTERFACE:
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case IRP_MN_QUERY_CAPABILITIES:
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case IRP_MN_QUERY_DEVICE_TEXT:
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case IRP_MN_QUERY_RESOURCES:
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case IRP_MN_QUERY_RESOURCE_REQUIREMENTS:
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case IRP_MN_FILTER_RESOURCE_REQUIREMENTS:
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case IRP_MN_READ_CONFIG:
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case IRP_MN_WRITE_CONFIG:
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case IRP_MN_EJECT:
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case IRP_MN_SET_LOCK:
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case IRP_MN_QUERY_ID:
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default:
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//
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// Here the driver below i8042prt might modify the behavior of these IRPS
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// Please see PlugPlay documentation for use of these IRPs.
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//
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IoSkipCurrentIrpStackLocation(Irp);
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status = IoCallDriver(commonData->TopOfStack, Irp);
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break;
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}
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Print(DBG_PNP_TRACE,
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("PtPnP (%s) exit (status=0x%x)\n",
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commonData->IsKeyboard ? "kb" : "mou",
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status
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));
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return status;
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}
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LONG
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PtManuallyRemoveDevice(
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PCOMMON_DATA CommonData
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)
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/*++
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Routine Description:
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Invalidates CommonData->PDO's device state and sets the manually removed
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flag
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Arguments:
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CommonData - represent either the keyboard or mouse
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Return Value:
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new device count for that particular type of device
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--*/
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{
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LONG deviceCount;
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PAGED_CODE();
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if (CommonData->IsKeyboard) {
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deviceCount = InterlockedDecrement(&Globals.AddedKeyboards);
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if (deviceCount < 1) {
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Print(DBG_PNP_INFO, ("clear kb (manually remove)\n"));
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CLEAR_KEYBOARD_PRESENT();
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}
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} else {
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deviceCount = InterlockedDecrement(&Globals.AddedMice);
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if (deviceCount < 1) {
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Print(DBG_PNP_INFO, ("clear mou (manually remove)\n"));
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CLEAR_MOUSE_PRESENT();
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}
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}
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CommonData->ManuallyRemoved = TRUE;
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IoInvalidateDeviceState(CommonData->PDO);
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return deviceCount;
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}
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NTSTATUS
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PtPower (
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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)
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/*++
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Routine Description:
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This is the dispatch routine for power requests.
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Arguments:
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DeviceObject - Pointer to the device object.
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Irp - Pointer to the request packet.
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Return Value:
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STATUS_SUCCESSFUL if successful,
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an valid NTSTATUS error code otherwise
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--*/
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{
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PCOMMON_DATA commonData;
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PIO_STACK_LOCATION stack;
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NTSTATUS status = STATUS_SUCCESS;
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//PAGED_CODE();
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commonData = GET_COMMON_DATA(DeviceObject->DeviceExtension);
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stack = IoGetCurrentIrpStackLocation(Irp);
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Print(DBG_POWER_TRACE,
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("Power (%s), enter\n",
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commonData->IsKeyboard ? "keyboard" :
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"mouse"
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));
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switch(stack->MinorFunction) {
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case IRP_MN_WAIT_WAKE:
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Print(DBG_POWER_NOISE, ("Got IRP_MN_WAIT_WAKE\n" ));
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break;
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case IRP_MN_POWER_SEQUENCE:
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Print(DBG_POWER_NOISE, ("Got IRP_MN_POWER_SEQUENCE\n" ));
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break;
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case IRP_MN_SET_POWER:
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Print(DBG_POWER_NOISE, ("Got IRP_MN_SET_POWER\n" ));
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//
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|
// Don't handle anything but DevicePowerState changes
|
|
//
|
|
if (stack->Parameters.Power.Type != DevicePowerState) {
|
|
Print(DBG_POWER_TRACE, ("not a device power irp\n"));
|
|
break;
|
|
}
|
|
|
|
//
|
|
// Check for no change in state, and if none, do nothing
|
|
//
|
|
if (stack->Parameters.Power.State.DeviceState ==
|
|
commonData->PowerState) {
|
|
Print(DBG_POWER_INFO,
|
|
("no change in state (PowerDeviceD%d)\n",
|
|
commonData->PowerState-1
|
|
));
|
|
break;
|
|
}
|
|
|
|
switch (stack->Parameters.Power.State.DeviceState) {
|
|
case PowerDeviceD0:
|
|
Print(DBG_POWER_TRACE, ("Powering up to PowerDeviceD0\n"));
|
|
|
|
commonData->IsKeyboard ? KEYBOARD_POWERED_UP_STARTED()
|
|
: MOUSE_POWERED_UP_STARTED();
|
|
|
|
IoCopyCurrentIrpStackLocationToNext(Irp);
|
|
IoSetCompletionRoutine(Irp,
|
|
PtPowerUpToD0Complete,
|
|
NULL,
|
|
TRUE, // on success
|
|
TRUE, // on error
|
|
TRUE // on cancel
|
|
);
|
|
|
|
//
|
|
// PoStartNextPowerIrp() gets called when the irp gets completed
|
|
//
|
|
IoMarkIrpPending(Irp);
|
|
PoCallDriver(commonData->TopOfStack, Irp);
|
|
|
|
return STATUS_PENDING;
|
|
|
|
case PowerDeviceD1:
|
|
case PowerDeviceD2:
|
|
case PowerDeviceD3:
|
|
Print(DBG_POWER_TRACE,
|
|
("Powering down to PowerDeviceD%d\n",
|
|
stack->Parameters.Power.State.DeviceState-1
|
|
));
|
|
|
|
PoSetPowerState(DeviceObject,
|
|
stack->Parameters.Power.Type,
|
|
stack->Parameters.Power.State
|
|
);
|
|
|
|
commonData->PowerState = stack->Parameters.Power.State.DeviceState;
|
|
commonData->ShutdownType = stack->Parameters.Power.ShutdownType;
|
|
|
|
//
|
|
// For what we are doing, we don't need a completion routine
|
|
// since we don't race on the power requests.
|
|
//
|
|
Irp->IoStatus.Status = STATUS_SUCCESS;
|
|
IoCopyCurrentIrpStackLocationToNext(Irp); // skip ?
|
|
|
|
PoStartNextPowerIrp(Irp);
|
|
return PoCallDriver(commonData->TopOfStack, Irp);
|
|
|
|
default:
|
|
Print(DBG_POWER_INFO, ("unknown state\n"));
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case IRP_MN_QUERY_POWER:
|
|
Print(DBG_POWER_NOISE, ("Got IRP_MN_QUERY_POWER\n" ));
|
|
break;
|
|
|
|
default:
|
|
Print(DBG_POWER_NOISE,
|
|
("Got unhandled minor function (%d)\n",
|
|
stack->MinorFunction
|
|
));
|
|
break;
|
|
}
|
|
|
|
Print(DBG_POWER_TRACE, ("Power, exit\n"));
|
|
|
|
PoStartNextPowerIrp(Irp);
|
|
|
|
IoSkipCurrentIrpStackLocation(Irp);
|
|
return PoCallDriver(commonData->TopOfStack, Irp);
|
|
}
|
|
|
|
NTSTATUS
|
|
PtPowerUpToD0Complete(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN PIRP Irp,
|
|
IN PVOID Context
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Reinitializes the i8042 haardware after any type of hibernation/sleep.
|
|
|
|
Arguments:
|
|
|
|
DeviceObject - Pointer to the device object
|
|
|
|
Irp - Pointer to the request
|
|
|
|
Context - Context passed in from the funciton that set the completion
|
|
routine. UNUSED.
|
|
|
|
|
|
Return Value:
|
|
|
|
STATUS_SUCCESSFUL if successful,
|
|
an valid NTSTATUS error code otherwise
|
|
|
|
--*/
|
|
{
|
|
NTSTATUS status;
|
|
PCOMMON_DATA commonData;
|
|
PIO_STACK_LOCATION stack;
|
|
KIRQL irql;
|
|
|
|
UNREFERENCED_PARAMETER(Context);
|
|
|
|
commonData = GET_COMMON_DATA(DeviceObject->DeviceExtension);
|
|
|
|
Print(DBG_POWER_TRACE,
|
|
("PowerUpToD0Complete (%s), Enter\n",
|
|
commonData->IsKeyboard ? "kb" : "mouse"
|
|
));
|
|
|
|
KeAcquireSpinLock(&Globals.ControllerData->PowerUpSpinLock, &irql);
|
|
|
|
if (NT_SUCCESS(Irp->IoStatus.Status)) {
|
|
|
|
commonData->IsKeyboard ? KEYBOARD_POWERED_UP_SUCCESSFULLY()
|
|
: MOUSE_POWERED_UP_SUCCESSFULLY();
|
|
|
|
status = STATUS_MORE_PROCESSING_REQUIRED;
|
|
|
|
}
|
|
else {
|
|
commonData->IsKeyboard ? KEYBOARD_POWERED_UP_FAILED()
|
|
: MOUSE_POWERED_UP_FAILED();
|
|
|
|
status = Irp->IoStatus.Status;
|
|
|
|
#if DBG
|
|
if (commonData->IsKeyboard) {
|
|
ASSERT(KEYBOARD_POWERED_UP_FAILED());
|
|
}
|
|
else {
|
|
ASSERT(MOUSE_POWERED_UP_FAILED());
|
|
}
|
|
#endif // DBG
|
|
}
|
|
|
|
KeReleaseSpinLock(&Globals.ControllerData->PowerUpSpinLock, irql);
|
|
|
|
|
|
if (NT_SUCCESS(status)) {
|
|
|
|
Print(DBG_SS_NOISE, ("reinit, status == 0x%x\n", status));
|
|
|
|
stack = IoGetCurrentIrpStackLocation(Irp);
|
|
|
|
ASSERT(stack->Parameters.Power.State.DeviceState == PowerDeviceD0);
|
|
commonData->PowerState = stack->Parameters.Power.State.DeviceState;
|
|
commonData->ShutdownType = PowerActionNone;
|
|
|
|
PoSetPowerState(commonData->Self,
|
|
stack->Parameters.Power.Type,
|
|
stack->Parameters.Power.State
|
|
);
|
|
}
|
|
|
|
//
|
|
// Complete the irp
|
|
//
|
|
Irp->IoStatus.Status = status;
|
|
Irp->IoStatus.Information = 0;
|
|
|
|
PoStartNextPowerIrp(Irp);
|
|
IoCompleteRequest(Irp, IO_NO_INCREMENT);
|
|
|
|
//
|
|
// Reset PoweredDevices so that we can keep track of the powered device
|
|
// the next time the machine is power managed off.
|
|
//
|
|
CLEAR_POWERUP_FLAGS();
|
|
|
|
return status;
|
|
} |