422 lines
11 KiB
C
422 lines
11 KiB
C
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/*++
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Copyright (c) 1996 Microsoft Corporation
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Module Name:
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WMI.C
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Abstract:
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This module contains the init code for the i8042 to hid converter.
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Environment:
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Kernel mode
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Revision History:
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Jan-98 : created by Kenneth D. Ray
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--*/
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#include "mouhid.h"
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#include <wmistr.h>
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE,MouHid_SystemControl)
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#pragma alloc_text(PAGE,MouHid_SetWmiDataItem)
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#pragma alloc_text(PAGE,MouHid_SetWmiDataBlock)
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#pragma alloc_text(PAGE,MouHid_QueryWmiDataBlock)
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#pragma alloc_text(PAGE,MouHid_QueryWmiRegInfo)
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#endif
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#define WMI_PORT_DRIVER_INFORMATION 0
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GUID MouHid_PointerPortGuid = POINTER_PORT_WMI_STD_DATA_GUID;
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WMIGUIDREGINFO MouHid_WmiGuidList[1] =
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{
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{
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&MouHid_PointerPortGuid, 1, 0 // Pointer Port driver information
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}
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};
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NTSTATUS
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MouHid_SystemControl (
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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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We have just received a System Control IRP.
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Assume that this is a WMI IRP and
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call into the WMI system library and let it handle this IRP for us.
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--*/
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{
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PDEVICE_EXTENSION deviceExtension;
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SYSCTL_IRP_DISPOSITION disposition;
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NTSTATUS status;
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deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
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status = WmiSystemControl(&deviceExtension->WmiLibInfo,
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DeviceObject,
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Irp,
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&disposition);
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switch(disposition)
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{
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case IrpProcessed:
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{
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//
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// This irp has been processed and may be completed or pending.
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break;
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}
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case IrpNotCompleted:
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{
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//
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// This irp has not been completed, but has been fully processed.
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// we will complete it now
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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break;
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}
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case IrpForward:
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case IrpNotWmi:
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{
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//
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// This irp is either not a WMI irp or is a WMI irp targetted
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// at a device lower in the stack.
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IoSkipCurrentIrpStackLocation (Irp);
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status = IoCallDriver (deviceExtension->TopOfStack, Irp);
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break;
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}
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default:
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{
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//
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// We really should never get here, but if we do just forward....
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ASSERT(FALSE);
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IoSkipCurrentIrpStackLocation (Irp);
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status = IoCallDriver (deviceExtension->TopOfStack, Irp);
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break;
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}
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}
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return(status);
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}
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//
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// WMI System Call back functions
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//
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NTSTATUS
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MouHid_SetWmiDataItem(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp,
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IN ULONG GuidIndex,
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IN ULONG InstanceIndex,
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IN ULONG DataItemId,
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IN ULONG BufferSize,
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IN PUCHAR Buffer
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)
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/*++
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Routine Description:
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This routine is a callback into the driver to set for the contents of
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a data block. When the driver has finished filling the data block it
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must call ClassWmiCompleteRequest to complete the irp. The driver can
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return STATUS_PENDING if the irp cannot be completed immediately.
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Arguments:
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DeviceObject is the device whose data block is being queried
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Irp is the Irp that makes this request
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GuidIndex is the index into the list of guids provided when the
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device registered
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InstanceIndex is the index that denotes which instance of the data block
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is being queried.
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DataItemId has the id of the data item being set
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BufferSize has the size of the data item passed
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Buffer has the new values for the data item
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Return Value:
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status
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--*/
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{
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PDEVICE_EXTENSION deviceExtension;
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NTSTATUS status;
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deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
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switch(GuidIndex) {
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case WMI_PORT_DRIVER_INFORMATION:
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status = STATUS_WMI_READ_ONLY;
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break;
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default:
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status = STATUS_WMI_GUID_NOT_FOUND;
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}
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status = WmiCompleteRequest( DeviceObject,
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Irp,
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status,
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0,
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IO_NO_INCREMENT);
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return status;
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}
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NTSTATUS
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MouHid_SetWmiDataBlock(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp,
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IN ULONG GuidIndex,
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IN ULONG InstanceIndex,
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IN ULONG BufferSize,
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IN PUCHAR Buffer
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)
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/*++
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Routine Description:
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This routine is a callback into the driver to set the contents of
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a data block. When the driver has finished filling the data block it
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must call ClassWmiCompleteRequest to complete the irp. The driver can
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return STATUS_PENDING if the irp cannot be completed immediately.
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Arguments:
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DeviceObject is the device whose data block is being queried
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Irp is the Irp that makes this request
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GuidIndex is the index into the list of guids provided when the
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device registered
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InstanceIndex is the index that denotes which instance of the data block
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is being queried.
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BufferSize has the size of the data block passed
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Buffer has the new values for the data block
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Return Value:
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status
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--*/
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{
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PDEVICE_EXTENSION deviceExtension;
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NTSTATUS status;
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deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
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switch(GuidIndex) {
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case WMI_PORT_DRIVER_INFORMATION:
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status = STATUS_WMI_READ_ONLY;
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break;
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default:
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status = STATUS_WMI_GUID_NOT_FOUND;
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}
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status = WmiCompleteRequest( DeviceObject,
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Irp,
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status,
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0,
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IO_NO_INCREMENT);
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return(status);
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}
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NTSTATUS
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MouHid_QueryWmiDataBlock(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp,
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IN ULONG GuidIndex,
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IN ULONG InstanceIndex,
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IN ULONG InstanceCount,
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IN OUT PULONG InstanceLengthArray,
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IN ULONG OutBufferSize,
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OUT PUCHAR Buffer
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)
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/*++
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Routine Description:
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This routine is a callback into the driver to query for the contents of
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a data block. When the driver has finished filling the data block it
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must call ClassWmiCompleteRequest to complete the irp. The driver can
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return STATUS_PENDING if the irp cannot be completed immediately.
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Arguments:
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DeviceObject is the device whose data block is being queried
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Irp is the Irp that makes this request
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GuidIndex is the index into the list of guids provided when the
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device registered
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InstanceIndex is the index that denotes which instance of the data block
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is being queried.
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InstanceCount is the number of instnaces expected to be returned for
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the data block.
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InstanceLengthArray is a pointer to an array of ULONG that returns the
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lengths of each instance of the data block. If this is NULL then
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there was not enough space in the output buffer to fufill the request
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so the irp should be completed with the buffer needed.
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BufferAvail on has the maximum size available to write the data
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block.
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Buffer on return is filled with the returned data block
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Return Value:
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status
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--*/
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{
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PDEVICE_EXTENSION deviceExtension;
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POINTER_PORT_WMI_STD_DATA data;
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NTSTATUS status;
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ULONG size = 0;
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//
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// Only ever registers 1 instance per guid
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ASSERT((InstanceIndex == 0) &&
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(InstanceCount == 1));
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deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
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switch (GuidIndex) {
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case WMI_PORT_DRIVER_INFORMATION:
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size = sizeof (data);
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if (OutBufferSize < size) {
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status = STATUS_BUFFER_TOO_SMALL;
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break;
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}
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RtlZeroMemory(&data,
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size
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);
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data.ConnectorType = POINTER_PORT_WMI_STD_USB;
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data.DataQueueSize = deviceExtension->Attributes.InputDataQueueLength;
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data.ErrorCount = 0;
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data.Buttons = deviceExtension->Attributes.NumberOfButtons;
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* (PPOINTER_PORT_WMI_STD_DATA) Buffer = data;
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*InstanceLengthArray = size;
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status = STATUS_SUCCESS;
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break;
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default:
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status = STATUS_WMI_GUID_NOT_FOUND;
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}
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status = WmiCompleteRequest( DeviceObject,
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Irp,
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status,
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size,
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IO_NO_INCREMENT);
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return status;
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}
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NTSTATUS
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MouHid_QueryWmiRegInfo(
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IN PDEVICE_OBJECT DeviceObject,
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OUT ULONG *RegFlags,
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OUT PUNICODE_STRING InstanceName,
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OUT PUNICODE_STRING *RegistryPath,
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OUT PUNICODE_STRING MofResourceName,
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OUT PDEVICE_OBJECT *Pdo
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)
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/*++
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Routine Description:
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This routine is a callback into the driver to retrieve the list of
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guids or data blocks that the driver wants to register with WMI. This
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routine may not pend or block. Driver should NOT call
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ClassWmiCompleteRequest.
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Arguments:
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DeviceObject is the device whose data block is being queried
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*RegFlags returns with a set of flags that describe the guids being
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registered for this device. If the device wants enable and disable
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collection callbacks before receiving queries for the registered
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guids then it should return the WMIREG_FLAG_EXPENSIVE flag. Also the
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returned flags may specify WMIREG_FLAG_INSTANCE_PDO in which case
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the instance name is determined from the PDO associated with the
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device object. Note that the PDO must have an associated devnode. If
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WMIREG_FLAG_INSTANCE_PDO is not set then Name must return a unique
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name for the device.
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InstanceName returns with the instance name for the guids if
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WMIREG_FLAG_INSTANCE_PDO is not set in the returned *RegFlags. The
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caller will call ExFreePool with the buffer returned.
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*RegistryPath returns with the registry path of the driver
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*MofResourceName returns with the name of the MOF resource attached to
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the binary file. If the driver does not have a mof resource attached
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then this can be returned as NULL.
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*Pdo returns with the device object for the PDO associated with this
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device if the WMIREG_FLAG_INSTANCE_PDO flag is retured in
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*RegFlags.
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Return Value:
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status
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--*/
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{
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PDEVICE_EXTENSION deviceExtension;
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deviceExtension = DeviceObject->DeviceExtension;
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*RegFlags = WMIREG_FLAG_INSTANCE_PDO;
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*RegistryPath = &Globals.RegistryPath;
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*Pdo = deviceExtension->PDO;
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return STATUS_SUCCESS;
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}
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