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579 lines
18 KiB
579 lines
18 KiB
/*++
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Copyright (c) 1997-1998 Microsoft Corporation, All Rights Reserved
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Module Name:
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kbdpnp.c
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Abstract:
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This module contains plug & play code for the I8042 Keyboard Filter Driver.
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Environment:
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Kernel mode.
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Revision History:
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--*/
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#include "i8042prt.h"
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#include "i8042log.h"
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#include <poclass.h>
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, I8xKeyboardConnectInterrupt)
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#pragma alloc_text(PAGE, I8xKeyboardInitializeHardware)
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#pragma alloc_text(PAGE, I8xKeyboardStartDevice)
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#pragma alloc_text(PAGE, I8xKeyboardRemoveDevice)
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#endif
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NTSTATUS
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I8xKeyboardConnectInterrupt(
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PPORT_KEYBOARD_EXTENSION KeyboardExtension
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)
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/*++
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Routine Description:
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Calls IoConnectInterupt to connect the keyboard interrupt
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Arguments:
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KeyboardExtension - Keyboard Extension
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SyncConnectContext - Structure to be filled in if synchronization needs to
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take place between this interrupt and the mouse
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interrupt.
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Return Value:
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STATUS_SUCCESSFUL if successful,
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--*/
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{
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NTSTATUS status = STATUS_SUCCESS;
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ULONG dumpData[1];
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PI8042_CONFIGURATION_INFORMATION configuration;
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PDEVICE_OBJECT self;
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PAGED_CODE();
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//
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// If the devices were started in totally disparate manner, make sure we
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// retry to connect the interrupt (and fail and NULL out InterruptObject)
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//
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if (KeyboardExtension->InterruptObject) {
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return STATUS_SUCCESS;
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}
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configuration = &Globals.ControllerData->Configuration;
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self = KeyboardExtension->Self;
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Print(DBG_SS_NOISE,
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("I8xKeyboardConnectInterrupt:\n"
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"\tFDO = 0x%x\n"
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"\tVector = 0x%x\n"
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"\tIrql = 0x%x\n"
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"\tSynchIrql = 0x%x\n"
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"\tIntterupt Mode = %s\n"
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"\tShared int: %s\n"
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"\tAffinity = 0x%x\n"
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"\tFloating Save = %s\n",
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self,
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(ULONG) KeyboardExtension->InterruptDescriptor.u.Interrupt.Vector,
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(ULONG) KeyboardExtension->InterruptDescriptor.u.Interrupt.Level,
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(ULONG) configuration->InterruptSynchIrql,
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KeyboardExtension->InterruptDescriptor.Flags
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== CM_RESOURCE_INTERRUPT_LATCHED ? "Latched" : "LevelSensitive",
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(ULONG) KeyboardExtension->InterruptDescriptor.ShareDisposition
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== CmResourceShareShared ? "true" : "false",
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(ULONG) KeyboardExtension->InterruptDescriptor.u.Interrupt.Affinity,
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configuration->FloatingSave ? "yes" : "no"
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));
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KeyboardExtension->IsIsrActivated = TRUE;
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//
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// Connect the interrupt and set everything in motion
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//
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status = IoConnectInterrupt(
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&(KeyboardExtension->InterruptObject),
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(PKSERVICE_ROUTINE) I8042KeyboardInterruptService,
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self,
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&KeyboardExtension->InterruptSpinLock,
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KeyboardExtension->InterruptDescriptor.u.Interrupt.Vector,
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(KIRQL) KeyboardExtension->InterruptDescriptor.u.Interrupt.Level,
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configuration->InterruptSynchIrql,
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KeyboardExtension->InterruptDescriptor.Flags
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== CM_RESOURCE_INTERRUPT_LATCHED ? Latched : LevelSensitive,
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(BOOLEAN) (KeyboardExtension->InterruptDescriptor.ShareDisposition
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== CmResourceShareShared),
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KeyboardExtension->InterruptDescriptor.u.Interrupt.Affinity,
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configuration->FloatingSave
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);
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if (NT_SUCCESS(status)) {
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INTERNAL_I8042_START_INFORMATION startInfo;
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PDEVICE_OBJECT topOfStack = IoGetAttachedDeviceReference(self);
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ASSERT(KeyboardExtension->InterruptObject != NULL);
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ASSERT(topOfStack);
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RtlZeroMemory(&startInfo, sizeof(INTERNAL_I8042_START_INFORMATION));
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startInfo.Size = sizeof(INTERNAL_I8042_START_INFORMATION);
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startInfo.InterruptObject = KeyboardExtension->InterruptObject;
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I8xSendIoctl(topOfStack,
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IOCTL_INTERNAL_I8042_KEYBOARD_START_INFORMATION,
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&startInfo,
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sizeof(INTERNAL_I8042_START_INFORMATION)
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);
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ObDereferenceObject(topOfStack);
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}
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else {
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//
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// Failed to install. Free up resources before exiting.
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//
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Print(DBG_SS_ERROR, ("Could not connect keyboard isr!!!\n"));
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dumpData[0] = KeyboardExtension->InterruptDescriptor.u.Interrupt.Level;
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//
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// Log the error
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//
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I8xLogError(self,
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I8042_NO_INTERRUPT_CONNECTED_KBD,
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I8042_ERROR_VALUE_BASE + 80,
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STATUS_INSUFFICIENT_RESOURCES,
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dumpData,
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1
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);
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I8xManuallyRemoveDevice(GET_COMMON_DATA(KeyboardExtension));
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}
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return status;
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}
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NTSTATUS
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I8xKeyboardInitializeHardware(
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PPORT_KEYBOARD_EXTENSION KeyboardExtension,
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PPORT_MOUSE_EXTENSION MouseExtension
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)
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/*++
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Routine Description:
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Called if the keyboard is the last device to initialized with respect to the
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mouse (if it is present at all). It calls the initialization function and
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then connects the (possibly) two interrupts, synchronizing the lower IRQL'ed
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interrupt to the higher one.
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Arguments:
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KeyboardExtension - Keyboard Extension
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SyncConnectContext - Structure to be filled in if synchronization needs to
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take place between this interrupt and the mouse
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interrupt.
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Return Value:
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STATUS_SUCCESSFUL if successful,
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--*/
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{
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NTSTATUS keyboardStatus = STATUS_UNSUCCESSFUL,
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mouseStatus = STATUS_UNSUCCESSFUL,
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status;
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BOOLEAN mouThoughtPresent;
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PAGED_CODE();
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//
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// Initialize the i8042 for all devices present on it.
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// If either device is unresponsive, then XXX_PRESENT() will be false
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//
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mouThoughtPresent = MOUSE_PRESENT();
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status = I8xInitializeHardwareAtBoot(&keyboardStatus, &mouseStatus);
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//
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// failure here means that we couldn't toggle the interrupts on the i8042
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//
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if (!NT_SUCCESS(status)) {
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return status;
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}
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if (DEVICE_START_SUCCESS(mouseStatus)) {
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//
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// Any errors will be logged by I8xMouseConnectInterruptAndEnable
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//
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status = I8xMouseConnectInterruptAndEnable(
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MouseExtension,
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mouseStatus == STATUS_DEVICE_NOT_CONNECTED ? FALSE : TRUE
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);
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//
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// mou couldn't connect, make sure our count of started devices reflects
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// this
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//
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if (!NT_SUCCESS(status)) {
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Print(DBG_SS_ERROR, ("thought mou was present, is not (2)!\n"));
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}
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}
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else {
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//
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// We thought the mouse was present, but it is not, make sure that started
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// devices reflects this
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//
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// if (mouThoughtPresent) {
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// InterlockedDecrement(&Globals.StartedDevices);
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// }
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}
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//
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// The keyboard could be present but not have been initialized
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// in I8xInitializeHardware
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//
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if (DEVICE_START_SUCCESS(keyboardStatus)) {
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//
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// I8xKeyboardConnectInterrupt will log any errors if unsuccessful
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//
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keyboardStatus = I8xKeyboardConnectInterrupt(KeyboardExtension);
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}
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return keyboardStatus;
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}
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NTSTATUS
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I8xKeyboardStartDevice(
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IN OUT PPORT_KEYBOARD_EXTENSION KeyboardExtension,
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IN PCM_RESOURCE_LIST ResourceList
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)
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/*++
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Routine Description:
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Configures the keyboard's device extension (ie allocation of pool,
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initialization of DPCs, etc). If the keyboard is the last device to start,
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it will also initialize the hardware and connect all the interrupts.
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Arguments:
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KeyboardExtension - Keyboard extesnion
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ResourceList - Translated resource list for this device
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Return Value:
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STATUS_SUCCESSFUL if successful,
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--*/
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{
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ULONG dumpData[1];
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NTSTATUS status = STATUS_SUCCESS;
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PDEVICE_OBJECT self;
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I8042_INITIALIZE_DATA_CONTEXT initializeDataContext;
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BOOLEAN tryMouseInit = FALSE;
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PAGED_CODE();
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Print(DBG_SS_TRACE, ("I8xKeyboardStartDevice, enter\n"));
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//
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// Check to see if kb has been started. If so, fail this start
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//
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if (KEYBOARD_INITIALIZED()) {
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Print(DBG_SS_ERROR, ("too many kbs!\n"));
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//
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// This is not really necessary because the value won't ever be checked
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// in the context of seeing if all the keyboards were bogus, but it is
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// done so that Globals.AddedKeyboards == # of actual started keyboards
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//
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InterlockedDecrement(&Globals.AddedKeyboards);
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status = STATUS_NO_SUCH_DEVICE;
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goto I8xKeyboardStartDeviceExit;
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}
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else if (KeyboardExtension->ConnectData.ClassService == NULL) {
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//
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// We are never really going to get here because if we don't have the
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// class driver on top of us, extension->IsKeyboard will be false and
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// we will think that the device is a mouse, but for completeness
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//
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// No class driver on top of us == BAD BAD BAD
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//
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// Fail the start of this device in the hope that there is another stack
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// that is correctly formed. Another side affect of having no class
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// driver is that the AddedKeyboards count is not incremented for this
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// device
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//
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Print(DBG_SS_ERROR, ("Keyboard started with out a service cb!\n"));
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return STATUS_INVALID_DEVICE_STATE;
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}
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status = I8xKeyboardConfiguration(KeyboardExtension,
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ResourceList
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);
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if (!NT_SUCCESS(status)) {
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if (I8xManuallyRemoveDevice(GET_COMMON_DATA(KeyboardExtension)) < 1) {
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tryMouseInit = TRUE;
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}
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goto I8xKeyboardStartDeviceExit;
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}
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ASSERT( KEYBOARD_PRESENT() );
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Globals.KeyboardExtension = KeyboardExtension;
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self = KeyboardExtension->Self;
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if ((KIRQL) KeyboardExtension->InterruptDescriptor.u.Interrupt.Level >
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Globals.ControllerData->Configuration.InterruptSynchIrql) {
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Globals.ControllerData->Configuration.InterruptSynchIrql =
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(KIRQL) KeyboardExtension->InterruptDescriptor.u.Interrupt.Level;
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}
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//
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// Initialize crash dump configuration
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//
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KeyboardExtension->CrashFlags = 0;
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KeyboardExtension->CurrentCrashFlags = 0;
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KeyboardExtension->CrashScanCode = (UCHAR) 0;
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KeyboardExtension->CrashScanCode2 = (UCHAR) 0;
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I8xKeyboardServiceParameters(
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&Globals.RegistryPath,
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KeyboardExtension
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);
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//
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// These may have been set by a value in the Parameters key. It overrides
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// the "Crash Dump" key
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//
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if (KeyboardExtension->CrashFlags == 0) {
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//
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// Get the crashdump information.
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//
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I8xServiceCrashDump(KeyboardExtension,
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&Globals.RegistryPath
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);
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}
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//
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// Allocate memory for the keyboard data queue.
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//
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KeyboardExtension->InputData = ExAllocatePool(
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NonPagedPool,
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KeyboardExtension->KeyboardAttributes.InputDataQueueLength
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);
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if (!KeyboardExtension->InputData) {
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//
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// Could not allocate memory for the keyboard data queue.
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//
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Print(DBG_SS_ERROR,
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("I8xStartDevice: Could not allocate keyboard input data queue\n"
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));
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dumpData[0] = KeyboardExtension->KeyboardAttributes.InputDataQueueLength;
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//
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// Log the error
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//
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I8xLogError(self,
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I8042_NO_BUFFER_ALLOCATED_KBD,
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I8042_ERROR_VALUE_BASE + 50,
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STATUS_INSUFFICIENT_RESOURCES,
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dumpData,
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1
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);
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status = STATUS_INSUFFICIENT_RESOURCES;
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tryMouseInit = TRUE;
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goto I8xKeyboardStartDeviceExit;
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}
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else {
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KeyboardExtension->DataEnd =
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(PKEYBOARD_INPUT_DATA)
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((PCHAR) (KeyboardExtension->InputData) +
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KeyboardExtension->KeyboardAttributes.InputDataQueueLength);
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//
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// Zero the keyboard input data ring buffer.
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//
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RtlZeroMemory(
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KeyboardExtension->InputData,
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KeyboardExtension->KeyboardAttributes.InputDataQueueLength
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);
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initializeDataContext.DeviceExtension = KeyboardExtension;
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initializeDataContext.DeviceType = KeyboardDeviceType;
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I8xInitializeDataQueue(&initializeDataContext);
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}
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KeyboardExtension->DpcInterlockKeyboard = -1;
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//
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// Initialize the ISR DPC . The ISR DPC
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// is responsible for calling the connected class driver's callback
|
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// routine to process the input data queue.
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//
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KeInitializeDpc(
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&KeyboardExtension->KeyboardIsrDpc,
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(PKDEFERRED_ROUTINE) I8042KeyboardIsrDpc,
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self
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);
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KeInitializeDpc(
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&KeyboardExtension->KeyboardIsrDpcRetry,
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(PKDEFERRED_ROUTINE) I8042KeyboardIsrDpc,
|
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self
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);
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KeInitializeDpc(
|
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&KeyboardExtension->SysButtonEventDpc,
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(PKDEFERRED_ROUTINE) I8xKeyboardSysButtonEventDpc,
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self
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);
|
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|
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KeInitializeSpinLock(&KeyboardExtension->SysButtonSpinLock);
|
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if (KeyboardExtension->PowerCaps) {
|
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I8xRegisterDeviceInterface(KeyboardExtension->PDO,
|
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&GUID_DEVICE_SYS_BUTTON,
|
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&KeyboardExtension->SysButtonInterfaceName
|
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);
|
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}
|
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|
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I8xInitWmi(GET_COMMON_DATA(KeyboardExtension));
|
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|
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KeyboardExtension->Initialized = TRUE;
|
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|
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//
|
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// This is not the last device to started on the i8042, defer h/w init
|
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// until the last device is started
|
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//
|
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if (MOUSE_PRESENT() && !MOUSE_STARTED()) {
|
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//
|
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// A mouse is present, but it has not been started yet
|
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//
|
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Print(DBG_SS_INFO, ("skipping init until mouse\n"));
|
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}
|
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else {
|
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status = I8xKeyboardInitializeHardware(KeyboardExtension,
|
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Globals.MouseExtension);
|
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}
|
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|
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I8xKeyboardStartDeviceExit:
|
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if (tryMouseInit && MOUSE_STARTED() && !MOUSE_INITIALIZED()) {
|
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Print(DBG_SS_INFO, ("keyboard may have failed, trying to init mouse\n"));
|
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I8xMouseInitializeHardware(KeyboardExtension,
|
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Globals.MouseExtension
|
|
);
|
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}
|
|
|
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Print(DBG_SS_INFO,
|
|
("I8xKeyboardStartDevice %s\n",
|
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NT_SUCCESS(status) ? "successful" : "unsuccessful"
|
|
));
|
|
|
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Print(DBG_SS_TRACE, ("I8xKeyboardStartDevice exit (0x%x)\n", status));
|
|
|
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return status;
|
|
}
|
|
|
|
VOID
|
|
I8xKeyboardRemoveDeviceInitialized(
|
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PPORT_KEYBOARD_EXTENSION KeyboardExtension
|
|
)
|
|
{
|
|
PIRP irp = NULL;
|
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KIRQL irql;
|
|
|
|
KeAcquireSpinLock(&KeyboardExtension->SysButtonSpinLock, &irql);
|
|
|
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KeRemoveQueueDpc(&KeyboardExtension->SysButtonEventDpc);
|
|
irp = KeyboardExtension->SysButtonEventIrp;
|
|
KeyboardExtension->SysButtonEventIrp = NULL;
|
|
|
|
if (irp && (irp->Cancel || IoSetCancelRoutine(irp, NULL) == NULL)) {
|
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irp = NULL;
|
|
}
|
|
|
|
KeReleaseSpinLock(&KeyboardExtension->SysButtonSpinLock, irql);
|
|
|
|
if (irp) {
|
|
I8xCompleteSysButtonIrp(irp, 0x0, STATUS_DELETE_PENDING);
|
|
}
|
|
}
|
|
|
|
VOID
|
|
I8xKeyboardRemoveDevice(
|
|
PDEVICE_OBJECT DeviceObject
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Removes the device. This will only occur if the device removed itself.
|
|
Disconnects the interrupt, removes the synchronization flag for the mouse if
|
|
present, and frees any memory associated with the device.
|
|
|
|
Arguments:
|
|
|
|
DeviceObject - The device object for the keyboard
|
|
|
|
Return Value:
|
|
|
|
STATUS_SUCCESSFUL if successful,
|
|
|
|
--*/
|
|
{
|
|
PPORT_KEYBOARD_EXTENSION keyboardExtension = DeviceObject->DeviceExtension;
|
|
PIRP irp;
|
|
|
|
Print(DBG_PNP_INFO, ("I8xKeyboardRemoveDevice enter\n"));
|
|
|
|
PAGED_CODE();
|
|
|
|
if (Globals.KeyboardExtension == keyboardExtension && keyboardExtension) {
|
|
CLEAR_KEYBOARD_PRESENT();
|
|
Globals.KeyboardExtension = NULL;
|
|
}
|
|
|
|
if (keyboardExtension->InterruptObject) {
|
|
IoDisconnectInterrupt(keyboardExtension->InterruptObject);
|
|
keyboardExtension->InterruptObject = NULL;
|
|
}
|
|
|
|
if (keyboardExtension->InputData) {
|
|
ExFreePool(keyboardExtension->InputData);
|
|
keyboardExtension->InputData = 0;
|
|
}
|
|
|
|
//
|
|
// See if we have gotten a sys button key press in the midst of a removal.
|
|
// If so, then the request will be in PendingCompletion...Irp, otherwise we
|
|
// might have the irp in Pending...Irp
|
|
//
|
|
if (keyboardExtension->Initialized) {
|
|
I8xKeyboardRemoveDeviceInitialized(keyboardExtension);
|
|
}
|
|
|
|
if (keyboardExtension->SysButtonInterfaceName.Buffer) {
|
|
IoSetDeviceInterfaceState(&keyboardExtension->SysButtonInterfaceName,
|
|
FALSE
|
|
);
|
|
RtlFreeUnicodeString(&keyboardExtension->SysButtonInterfaceName);
|
|
}
|
|
|
|
}
|