huwcampbell.com
Reactos
1/*
2 * PROJECT: ReactOS Serial mouse driver
3 * LICENSE: GPL - See COPYING in the top level directory
4 * FILE: drivers/input/sermouse/fdo.c
5 * PURPOSE: Serial mouse driver entry point
6 * PROGRAMMERS: Copyright 2005-2006 Herv� Poussineau (hpoussin@reactos.org)
7 */
8
9#include "sermouse.h"
10
11#include <debug.h>
12
13static DRIVER_UNLOAD DriverUnload;
14static DRIVER_DISPATCH IrpStub;
15DRIVER_INITIALIZE DriverEntry;
16
17static VOID NTAPI
18DriverUnload(IN PDRIVER_OBJECT DriverObject)
19{
20 // nothing to do here yet
21}
22
23static NTSTATUS NTAPI
24IrpStub(
25 IN PDEVICE_OBJECT DeviceObject,
26 IN PIRP Irp)
27{
28 ERR_(SERMOUSE, "Irp stub for major function 0x%lx\n",
29 IoGetCurrentIrpStackLocation(Irp)->MajorFunction);
30 IoCompleteRequest(Irp, IO_NO_INCREMENT);
31 return STATUS_NOT_SUPPORTED;
32}
33
34static NTSTATUS
35ReadRegistryEntries(
36 IN PUNICODE_STRING RegistryPath,
37 IN PSERMOUSE_DRIVER_EXTENSION DriverExtension)
38{
39 UNICODE_STRING ParametersRegistryKey;
40 RTL_QUERY_REGISTRY_TABLE Parameters[2];
41 NTSTATUS Status;
42
43 ULONG DefaultNumberOfButtons = 2;
44
45 ParametersRegistryKey.Length = 0;
46 ParametersRegistryKey.MaximumLength = RegistryPath->Length + sizeof(L"\\Parameters") + sizeof(UNICODE_NULL);
47 ParametersRegistryKey.Buffer = ExAllocatePoolWithTag(PagedPool, ParametersRegistryKey.MaximumLength, SERMOUSE_TAG);
48 if (!ParametersRegistryKey.Buffer)
49 {
50 WARN_(SERMOUSE, "ExAllocatePoolWithTag() failed\n");
51 return STATUS_NO_MEMORY;
52 }
53 RtlCopyUnicodeString(&ParametersRegistryKey, RegistryPath);
54 RtlAppendUnicodeToString(&ParametersRegistryKey, L"\\Parameters");
55 ParametersRegistryKey.Buffer[ParametersRegistryKey.Length / sizeof(WCHAR)] = UNICODE_NULL;
56
57 RtlZeroMemory(Parameters, sizeof(Parameters));
58
59 Parameters[0].Flags = RTL_QUERY_REGISTRY_DIRECT;
60 Parameters[0].Name = L"NumberOfButtons";
61 Parameters[0].EntryContext = &DriverExtension->NumberOfButtons;
62 Parameters[0].DefaultType = REG_DWORD;
63 Parameters[0].DefaultData = &DefaultNumberOfButtons;
64 Parameters[0].DefaultLength = sizeof(ULONG);
65
66 Status = RtlQueryRegistryValues(
67 RTL_REGISTRY_ABSOLUTE | RTL_REGISTRY_OPTIONAL,
68 ParametersRegistryKey.Buffer,
69 Parameters,
70 NULL,
71 NULL);
72
73 if (NT_SUCCESS(Status))
74 {
75 /* Check values */
76 }
77 else if (Status == STATUS_OBJECT_NAME_NOT_FOUND)
78 {
79 /* Registry path doesn't exist. Set defaults */
80 DriverExtension->NumberOfButtons = (USHORT)DefaultNumberOfButtons;
81 Status = STATUS_SUCCESS;
82 }
83
84 ExFreePoolWithTag(ParametersRegistryKey.Buffer, SERMOUSE_TAG);
85 return Status;
86}
87
88/*
89 * Standard DriverEntry method.
90 */
91NTSTATUS NTAPI
92DriverEntry(
93 IN PDRIVER_OBJECT DriverObject,
94 IN PUNICODE_STRING RegistryPath)
95{
96 PSERMOUSE_DRIVER_EXTENSION DriverExtension;
97 ULONG i;
98 NTSTATUS Status;
99
100 Status = IoAllocateDriverObjectExtension(
101 DriverObject,
102 DriverObject,
103 sizeof(SERMOUSE_DRIVER_EXTENSION),
104 (PVOID*)&DriverExtension);
105 if (!NT_SUCCESS(Status))
106 {
107 WARN_(SERMOUSE, "IoAllocateDriverObjectExtension() failed with status 0x%08lx\n", Status);
108 return Status;
109 }
110 RtlZeroMemory(DriverExtension, sizeof(SERMOUSE_DRIVER_EXTENSION));
111
112 Status = ReadRegistryEntries(RegistryPath, DriverExtension);
113 if (!NT_SUCCESS(Status))
114 {
115 WARN_(SERMOUSE, "ReadRegistryEntries() failed with status 0x%08lx\n", Status);
116 return Status;
117 }
118
119 DriverObject->DriverUnload = DriverUnload;
120 DriverObject->DriverExtension->AddDevice = SermouseAddDevice;
121
122 for (i = 0; i <= IRP_MJ_MAXIMUM_FUNCTION; i++)
123 DriverObject->MajorFunction[i] = IrpStub;
124
125 DriverObject->MajorFunction[IRP_MJ_CREATE] = SermouseCreate;
126 DriverObject->MajorFunction[IRP_MJ_CLOSE] = SermouseClose;
127 DriverObject->MajorFunction[IRP_MJ_CLEANUP] = SermouseCleanup;
128 //DriverObject->MajorFunction[IRP_MJ_READ] = SermouseRead;
129 //DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = SermouseDeviceControl;
130 DriverObject->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] = SermouseInternalDeviceControl;
131 //DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = SermouseQueryInformation;
132 DriverObject->MajorFunction[IRP_MJ_PNP] = SermousePnp;
133 //DriverObject->MajorFunction[IRP_MJ_POWER] = SermousePower;
134
135 return STATUS_SUCCESS;
136}