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/*++
Copyright (c) 1997 Microsoft Corporation
Module Name:
wmi.c
Abstract:
This module contains the code that handles the wmi IRPs for the
serial driver.
Environment:
Kernel mode
--*/
#include "precomp.h"
#include <wmistr.h>
#if defined(EVENT_TRACING)
#include "wmi.tmh"
#endif
EVT_WDF_WMI_INSTANCE_QUERY_INSTANCE EvtWmiQueryPortName;
EVT_WDF_WMI_INSTANCE_QUERY_INSTANCE EvtWmiQueryPortCommData;
EVT_WDF_WMI_INSTANCE_QUERY_INSTANCE EvtWmiQueryPortHWData;
EVT_WDF_WMI_INSTANCE_QUERY_INSTANCE EvtWmiQueryPortPerfData;
EVT_WDF_WMI_INSTANCE_QUERY_INSTANCE EvtWmiQueryPortPropData;
NTSTATUS
SerialWmiRegisterInstance(
WDFDEVICE Device,
const GUID* Guid,
ULONG MinInstanceBufferSize,
PFN_WDF_WMI_INSTANCE_QUERY_INSTANCE EvtWmiInstanceQueryInstance
);
#ifdef ALLOC_PRAGMA
#pragma alloc_text(PAGESRP0, SerialWmiRegistration)
#pragma alloc_text(PAGESRP0, SerialWmiRegisterInstance)
#pragma alloc_text(PAGESRP0, EvtWmiQueryPortName)
#pragma alloc_text(PAGESRP0, EvtWmiQueryPortCommData)
#pragma alloc_text(PAGESRP0, EvtWmiQueryPortHWData)
#pragma alloc_text(PAGESRP0, EvtWmiQueryPortPerfData)
#pragma alloc_text(PAGESRP0, EvtWmiQueryPortPropData)
#endif
NTSTATUS
SerialWmiRegisterInstance(
WDFDEVICE Device,
const GUID* Guid,
ULONG MinInstanceBufferSize,
PFN_WDF_WMI_INSTANCE_QUERY_INSTANCE EvtWmiInstanceQueryInstance
)
{
WDF_WMI_PROVIDER_CONFIG providerConfig;
WDF_WMI_INSTANCE_CONFIG instanceConfig;
PAGED_CODE();
//
// Create and register WMI providers and instances blocks
//
WDF_WMI_PROVIDER_CONFIG_INIT(&providerConfig, Guid);
providerConfig.MinInstanceBufferSize = MinInstanceBufferSize;
WDF_WMI_INSTANCE_CONFIG_INIT_PROVIDER_CONFIG(&instanceConfig, &providerConfig);
instanceConfig.Register = TRUE;
instanceConfig.EvtWmiInstanceQueryInstance = EvtWmiInstanceQueryInstance;
return WdfWmiInstanceCreate(Device,
&instanceConfig,
WDF_NO_OBJECT_ATTRIBUTES,
WDF_NO_HANDLE);
}
NTSTATUS
SerialWmiRegistration(
WDFDEVICE Device
)
/*++
Routine Description
Registers with WMI as a data provider for this
instance of the device
--*/
{
NTSTATUS status = STATUS_SUCCESS;
PSERIAL_DEVICE_EXTENSION pDevExt;
PAGED_CODE();
pDevExt = SerialGetDeviceExtension (Device);
//
// Fill in wmi perf data (all zero's)
//
RtlZeroMemory(&pDevExt->WmiPerfData, sizeof(pDevExt->WmiPerfData));
status = SerialWmiRegisterInstance(Device,
&MSSerial_PortName_GUID,
0,
EvtWmiQueryPortName);
if (!NT_SUCCESS(status)) {
return status;
}
status = SerialWmiRegisterInstance(Device,
&MSSerial_CommInfo_GUID,
sizeof(SERIAL_WMI_COMM_DATA),
EvtWmiQueryPortCommData);
if (!NT_SUCCESS(status)) {
return status;
}
status = SerialWmiRegisterInstance(Device,
&MSSerial_HardwareConfiguration_GUID,
sizeof(SERIAL_WMI_HW_DATA),
EvtWmiQueryPortHWData);
if (!NT_SUCCESS(status)) {
return status;
}
status = SerialWmiRegisterInstance(Device,
&MSSerial_PerformanceInformation_GUID,
sizeof(SERIAL_WMI_PERF_DATA),
EvtWmiQueryPortPerfData);
if (!NT_SUCCESS(status)) {
return status;
}
status = SerialWmiRegisterInstance(Device,
&MSSerial_CommProperties_GUID,
sizeof(SERIAL_COMMPROP) + sizeof(ULONG),
EvtWmiQueryPortPropData);
if (!NT_SUCCESS(status)) {
return status;
}
return status;
}
//
// WMI Call back functions
//
NTSTATUS
EvtWmiQueryPortName(
IN WDFWMIINSTANCE WmiInstance,
IN ULONG OutBufferSize,
IN PVOID OutBuffer,
OUT PULONG BufferUsed
)
{
WDFDEVICE device;
WCHAR pRegName[SYMBOLIC_NAME_LENGTH];
UNICODE_STRING string;
USHORT nameSize = sizeof(pRegName);
NTSTATUS status;
PAGED_CODE();
device = WdfWmiInstanceGetDevice(WmiInstance);
status = SerialReadSymName(device, pRegName, &nameSize);
if (!NT_SUCCESS(status)) {
return status;
}
RtlInitUnicodeString(&string, pRegName);
return WDF_WMI_BUFFER_APPEND_STRING(OutBuffer,
OutBufferSize,
&string,
BufferUsed);
}
NTSTATUS
EvtWmiQueryPortCommData(
IN WDFWMIINSTANCE WmiInstance,
IN ULONG OutBufferSize,
IN PVOID OutBuffer,
OUT PULONG BufferUsed
)
{
PSERIAL_DEVICE_EXTENSION pDevExt;
UNREFERENCED_PARAMETER(OutBufferSize);
PAGED_CODE();
pDevExt = SerialGetDeviceExtension (WdfWmiInstanceGetDevice(WmiInstance));
*BufferUsed = sizeof(SERIAL_WMI_COMM_DATA);
if (OutBufferSize < *BufferUsed) {
return STATUS_INSUFFICIENT_RESOURCES;
}
*(PSERIAL_WMI_COMM_DATA)OutBuffer = pDevExt->WmiCommData;
return STATUS_SUCCESS;
}
NTSTATUS
EvtWmiQueryPortHWData(
IN WDFWMIINSTANCE WmiInstance,
IN ULONG OutBufferSize,
IN PVOID OutBuffer,
OUT PULONG BufferUsed
)
{
PSERIAL_DEVICE_EXTENSION pDevExt;
UNREFERENCED_PARAMETER(OutBufferSize);
PAGED_CODE();
pDevExt = SerialGetDeviceExtension (WdfWmiInstanceGetDevice(WmiInstance));
*BufferUsed = sizeof(SERIAL_WMI_HW_DATA);
if (OutBufferSize < *BufferUsed) {
return STATUS_INSUFFICIENT_RESOURCES;
}
*(PSERIAL_WMI_HW_DATA)OutBuffer = pDevExt->WmiHwData;
return STATUS_SUCCESS;
}
NTSTATUS
EvtWmiQueryPortPerfData(
IN WDFWMIINSTANCE WmiInstance,
IN ULONG OutBufferSize,
IN PVOID OutBuffer,
OUT PULONG BufferUsed
)
{
PSERIAL_DEVICE_EXTENSION pDevExt;
UNREFERENCED_PARAMETER(OutBufferSize);
PAGED_CODE();
pDevExt = SerialGetDeviceExtension (WdfWmiInstanceGetDevice(WmiInstance));
*BufferUsed = sizeof(SERIAL_WMI_PERF_DATA);
if (OutBufferSize < *BufferUsed) {
return STATUS_INSUFFICIENT_RESOURCES;
}
*(PSERIAL_WMI_PERF_DATA)OutBuffer = pDevExt->WmiPerfData;
return STATUS_SUCCESS;
}
NTSTATUS
EvtWmiQueryPortPropData(
IN WDFWMIINSTANCE WmiInstance,
IN ULONG OutBufferSize,
IN PVOID OutBuffer,
OUT PULONG BufferUsed
)
{
PSERIAL_DEVICE_EXTENSION pDevExt;
UNREFERENCED_PARAMETER(OutBufferSize);
PAGED_CODE();
pDevExt = SerialGetDeviceExtension (WdfWmiInstanceGetDevice(WmiInstance));
*BufferUsed = sizeof(SERIAL_COMMPROP) + sizeof(ULONG);
if (OutBufferSize < *BufferUsed) {
return STATUS_INSUFFICIENT_RESOURCES;
}
SerialGetProperties(
pDevExt,
(PSERIAL_COMMPROP)OutBuffer
);
*((PULONG)(((PSERIAL_COMMPROP)OutBuffer)->ProvChar)) = 0;
return STATUS_SUCCESS;
}
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