mirror of
https://github.com/reactos/reactos.git
synced 2024-10-31 03:48:17 +00:00
403 lines
12 KiB
C
403 lines
12 KiB
C
/*
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* PROJECT: ReactOS Generic CPU Driver
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* LICENSE: GNU GPLv2 only as published by the Free Software Foundation
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* FILE: drivers/processor/processr/pnp.c
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* PURPOSE: Plug N Play routines
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* PROGRAMMERS: Eric Kohl <eric.kohl@reactos.org>
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*/
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/* INCLUDES *******************************************************************/
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#include "processr.h"
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#include <stdio.h>
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#define NDEBUG
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#include <debug.h>
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/* FUNCTIONS ******************************************************************/
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static
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NTSTATUS
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GetDeviceId(
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PDEVICE_OBJECT DeviceObject,
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BUS_QUERY_ID_TYPE IdType,
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PWSTR *DeviceId)
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{
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PIO_STACK_LOCATION IrpStack;
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IO_STATUS_BLOCK IoStatus;
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PDEVICE_OBJECT TargetObject;
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KEVENT Event;
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PIRP Irp;
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NTSTATUS Status;
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PAGED_CODE();
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/* Initialize the event */
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KeInitializeEvent(&Event, NotificationEvent, FALSE);
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TargetObject = IoGetAttachedDeviceReference(DeviceObject);
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/* Build the IRP */
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Irp = IoBuildSynchronousFsdRequest(IRP_MJ_PNP,
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TargetObject,
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NULL,
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0,
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NULL,
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&Event,
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&IoStatus);
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if (Irp == NULL)
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto done;
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}
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/* PNP IRPs all begin life as STATUS_NOT_SUPPORTED */
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Irp->IoStatus.Status = STATUS_NOT_SUPPORTED;
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/* Get the top of stack */
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IrpStack = IoGetNextIrpStackLocation(Irp);
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/* Set the top of stack */
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RtlZeroMemory(IrpStack, sizeof(IO_STACK_LOCATION));
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IrpStack->MajorFunction = IRP_MJ_PNP;
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IrpStack->MinorFunction = IRP_MN_QUERY_ID;
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IrpStack->Parameters.QueryId.IdType = IdType;
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/* Call the driver */
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Status = IoCallDriver(TargetObject, Irp);
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if (Status == STATUS_PENDING)
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{
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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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Status = IoStatus.Status;
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}
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if (NT_SUCCESS(Status))
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{
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*DeviceId = (PWSTR)IoStatus.Information;
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}
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done:
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/* Dereference the target device object */
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ObDereferenceObject(TargetObject);
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return Status;
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}
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static
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VOID
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ProcessorSetFriendlyName(
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PDEVICE_OBJECT DeviceObject)
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{
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KEY_VALUE_PARTIAL_INFORMATION *Buffer = NULL;
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OBJECT_ATTRIBUTES ObjectAttributes;
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UNICODE_STRING HardwareKeyName, ValueName, EnumKeyName;
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HANDLE KeyHandle = NULL;
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ULONG DataLength = 0;
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ULONG BufferLength = 0;
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NTSTATUS Status;
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PWSTR KeyNameBuffer = NULL;
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PWSTR DeviceId = NULL;
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PWSTR InstanceId = NULL;
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PWSTR pszPrefix = L"\\Registry\\Machine\\System\\CurrentControlSet\\Enum";
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RtlInitUnicodeString(&HardwareKeyName,
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L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0");
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InitializeObjectAttributes(&ObjectAttributes,
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&HardwareKeyName,
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OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
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NULL,
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NULL);
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Status = ZwOpenKey(&KeyHandle,
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KEY_READ,
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&ObjectAttributes);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("ZwOpenKey() failed (Status 0x%08lx)\n", Status);
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return;
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}
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RtlInitUnicodeString(&ValueName,
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L"ProcessorNameString");
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Status = ZwQueryValueKey(KeyHandle,
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&ValueName,
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KeyValuePartialInformation,
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NULL,
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0,
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&DataLength);
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if (Status != STATUS_BUFFER_OVERFLOW && Status != STATUS_BUFFER_TOO_SMALL && Status != STATUS_SUCCESS)
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{
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DPRINT1("ZwQueryValueKey() failed (Status 0x%08lx)\n", Status);
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goto done;
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}
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Buffer = ExAllocatePool(PagedPool,
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DataLength + sizeof(KEY_VALUE_PARTIAL_INFORMATION));
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if (Buffer == NULL)
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{
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DPRINT1("ExAllocatePool() failed\n");
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goto done;
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}
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Status = ZwQueryValueKey(KeyHandle,
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&ValueName,
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KeyValuePartialInformation,
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Buffer,
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DataLength + sizeof(KEY_VALUE_PARTIAL_INFORMATION),
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&DataLength);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("ZwQueryValueKey() failed (Status 0x%08lx)\n", Status);
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goto done;
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}
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DPRINT("ProcessorNameString: %S\n", (PWSTR)&Buffer->Data[0]);
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ZwClose(KeyHandle);
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KeyHandle = NULL;
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Status = GetDeviceId(DeviceObject,
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BusQueryDeviceID,
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&DeviceId);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("GetDeviceId() failed (Status 0x%08lx)\n", Status);
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goto done;
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}
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DPRINT("DeviceId: %S\n", DeviceId);
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Status = GetDeviceId(DeviceObject,
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BusQueryInstanceID,
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&InstanceId);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("GetDeviceId() failed (Status 0x%08lx)\n", Status);
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goto done;
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}
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DPRINT("InstanceId: %S\n", InstanceId);
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BufferLength = wcslen(pszPrefix) + 1 + wcslen(DeviceId) + 1 + wcslen(InstanceId) + 1;
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KeyNameBuffer = ExAllocatePool(PagedPool, BufferLength * sizeof(WCHAR));
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if (KeyNameBuffer == NULL)
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{
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DPRINT1("ExAllocatePool() failed\n");
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goto done;
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}
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swprintf(KeyNameBuffer, L"%s\\%s\\%s", pszPrefix, DeviceId, InstanceId);
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RtlInitUnicodeString(&EnumKeyName, KeyNameBuffer);
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InitializeObjectAttributes(&ObjectAttributes,
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&EnumKeyName,
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OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
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NULL,
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NULL);
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Status = ZwOpenKey(&KeyHandle,
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KEY_WRITE,
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&ObjectAttributes);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("ZwOpenKey() failed (Status 0x%08lx)\n", Status);
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goto done;
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}
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RtlInitUnicodeString(&ValueName,
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L"FriendlyName");
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Status = ZwSetValueKey(KeyHandle,
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&ValueName,
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0,
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REG_SZ,
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(PVOID)&Buffer->Data[0],
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Buffer->DataLength);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("ZwSetValueKey() failed (Status 0x%08lx)\n", Status);
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goto done;
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}
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done:
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if (KeyHandle != NULL)
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ZwClose(KeyHandle);
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if (KeyNameBuffer != NULL)
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ExFreePool(KeyNameBuffer);
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if (InstanceId != NULL)
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ExFreePool(InstanceId);
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if (DeviceId != NULL)
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ExFreePool(DeviceId);
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if (Buffer != NULL)
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ExFreePool(Buffer);
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}
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static
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NTSTATUS
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ProcessorStartDevice(
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IN PDEVICE_OBJECT DeviceObject,
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IN PCM_RESOURCE_LIST ResourceList,
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IN PCM_RESOURCE_LIST ResourceListTranslated)
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{
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DPRINT("ProcessorStartDevice()\n");
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ProcessorSetFriendlyName(DeviceObject);
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return STATUS_SUCCESS;
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}
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NTSTATUS
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NTAPI
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ProcessorPnp(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp)
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{
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PIO_STACK_LOCATION IrpSp;
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ULONG_PTR Information = 0;
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NTSTATUS Status = STATUS_NOT_SUPPORTED;
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DPRINT("ProcessorPnp()\n");
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IrpSp = IoGetCurrentIrpStackLocation(Irp);
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switch (IrpSp->MinorFunction)
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{
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case IRP_MN_START_DEVICE:
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DPRINT(" IRP_MN_START_DEVICE received\n");
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/* Call lower driver */
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Status = ForwardIrpAndWait(DeviceObject, Irp);
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if (NT_SUCCESS(Status))
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{
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Status = ProcessorStartDevice(DeviceObject,
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IrpSp->Parameters.StartDevice.AllocatedResources,
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IrpSp->Parameters.StartDevice.AllocatedResourcesTranslated);
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}
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break;
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case IRP_MN_QUERY_REMOVE_DEVICE:
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DPRINT(" IRP_MN_QUERY_REMOVE_DEVICE\n");
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return ForwardIrpAndForget(DeviceObject, Irp);
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case IRP_MN_REMOVE_DEVICE:
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DPRINT(" IRP_MN_REMOVE_DEVICE received\n");
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return ForwardIrpAndForget(DeviceObject, Irp);
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case IRP_MN_CANCEL_REMOVE_DEVICE:
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DPRINT(" IRP_MN_CANCEL_REMOVE_DEVICE\n");
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return ForwardIrpAndForget(DeviceObject, Irp);
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case IRP_MN_STOP_DEVICE:
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DPRINT(" IRP_MN_STOP_DEVICE received\n");
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return ForwardIrpAndForget(DeviceObject, Irp);
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case IRP_MN_QUERY_STOP_DEVICE:
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DPRINT(" IRP_MN_QUERY_STOP_DEVICE received\n");
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return ForwardIrpAndForget(DeviceObject, Irp);
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case IRP_MN_CANCEL_STOP_DEVICE:
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DPRINT(" IRP_MN_CANCEL_STOP_DEVICE\n");
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return ForwardIrpAndForget(DeviceObject, Irp);
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case IRP_MN_QUERY_DEVICE_RELATIONS:
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DPRINT(" IRP_MN_QUERY_DEVICE_RELATIONS\n");
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switch (IrpSp->Parameters.QueryDeviceRelations.Type)
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{
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case BusRelations:
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DPRINT(" IRP_MJ_PNP / IRP_MN_QUERY_DEVICE_RELATIONS / BusRelations\n");
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return ForwardIrpAndForget(DeviceObject, Irp);
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break;
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case RemovalRelations:
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DPRINT(" IRP_MJ_PNP / IRP_MN_QUERY_DEVICE_RELATIONS / RemovalRelations\n");
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return ForwardIrpAndForget(DeviceObject, Irp);
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default:
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DPRINT(" IRP_MJ_PNP / IRP_MN_QUERY_DEVICE_RELATIONS / Unknown type 0x%lx\n",
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IrpSp->Parameters.QueryDeviceRelations.Type);
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return ForwardIrpAndForget(DeviceObject, Irp);
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}
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break;
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case IRP_MN_SURPRISE_REMOVAL:
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DPRINT(" IRP_MN_SURPRISE_REMOVAL received\n");
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return ForwardIrpAndForget(DeviceObject, Irp);
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case IRP_MN_FILTER_RESOURCE_REQUIREMENTS: /* (optional) 0xd */
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DPRINT(" IRP_MN_FILTER_RESOURCE_REQUIREMENTS\n");
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return ForwardIrpAndForget(DeviceObject, Irp);
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default:
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DPRINT(" Unknown IOCTL 0x%lx\n", IrpSp->MinorFunction);
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return ForwardIrpAndForget(DeviceObject, Irp);
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}
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Irp->IoStatus.Information = Information;
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Irp->IoStatus.Status = Status;
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IoCompleteRequest(Irp, IO_NO_INCREMENT);
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return Status;
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}
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NTSTATUS
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NTAPI
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ProcessorAddDevice(
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IN PDRIVER_OBJECT DriverObject,
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IN PDEVICE_OBJECT Pdo)
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{
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PDEVICE_EXTENSION DeviceExtension = NULL;
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PDEVICE_OBJECT Fdo = NULL;
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NTSTATUS Status;
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DPRINT("ProcessorAddDevice()\n");
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ASSERT(DriverObject);
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ASSERT(Pdo);
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/* Create functional device object */
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Status = IoCreateDevice(DriverObject,
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sizeof(DEVICE_EXTENSION),
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NULL,
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FILE_DEVICE_UNKNOWN,
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FILE_DEVICE_SECURE_OPEN,
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FALSE,
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&Fdo);
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if (NT_SUCCESS(Status))
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{
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DeviceExtension = (PDEVICE_EXTENSION)Fdo->DeviceExtension;
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RtlZeroMemory(DeviceExtension, sizeof(DEVICE_EXTENSION));
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DeviceExtension->DeviceObject = Fdo;
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Status = IoAttachDeviceToDeviceStackSafe(Fdo, Pdo, &DeviceExtension->LowerDevice);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("IoAttachDeviceToDeviceStackSafe() failed with status 0x%08lx\n", Status);
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IoDeleteDevice(Fdo);
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return Status;
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}
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Fdo->Flags |= DO_DIRECT_IO;
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Fdo->Flags |= DO_POWER_PAGABLE;
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Fdo->Flags &= ~DO_DEVICE_INITIALIZING;
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}
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return Status;
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}
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/* EOF */
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