1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/*++
Copyright (c) Microsoft Corporation. All rights reserved.
Module Name:
defaultqueue.c
Abstract:
Implements the device's default queue callbacks.
Environment:
Kernel mode
--*/
#include "device.h"
#include "defaultqueue.h"
#include "defaultqueue.tmh"
EVT_WDF_IO_QUEUE_IO_DEVICE_CONTROL DefaultQueue_EvtIoDeviceControl;
EVT_WDF_IO_QUEUE_IO_INTERNAL_DEVICE_CONTROL DefaultQueue_EvtIoInternalDeviceControl;
#ifdef ALLOC_PRAGMA
#pragma alloc_text (PAGE, DefaultQueueCreate)
#endif
_Must_inspect_result_
_IRQL_requires_(PASSIVE_LEVEL)
NTSTATUS
DefaultQueueCreate(
_In_ WDFDEVICE Device
)
/*++
Routine Description:
Creates and configures the default IO Queue for the device.
Arguments:
Device - Handle to a framework device object.
Return Value:
Appropriate NTSTATUS message
--*/
{
NTSTATUS Status;
WDF_IO_QUEUE_CONFIG QueueConfig;
TraceEntry();
PAGED_CODE();
//
// Create the default queue
//
WDF_IO_QUEUE_CONFIG_INIT_DEFAULT_QUEUE(
&QueueConfig,
WdfIoQueueDispatchParallel
);
QueueConfig.PowerManaged = WdfTrue;
QueueConfig.EvtIoDeviceControl = DefaultQueue_EvtIoDeviceControl;
QueueConfig.EvtIoInternalDeviceControl = DefaultQueue_EvtIoInternalDeviceControl;
Status = WdfIoQueueCreate(
Device,
&QueueConfig,
WDF_NO_OBJECT_ATTRIBUTES,
NULL);
CHK_NT_MSG(Status, "WdfIoQueueCreate failed");
End:
TraceExit();
return Status;
}
VOID
DefaultQueue_EvtIoDeviceControl(
_In_ WDFQUEUE Queue,
_In_ WDFREQUEST Request,
_In_ size_t OutputBufferLength,
_In_ size_t InputBufferLength,
_In_ ULONG IoControlCode
)
/*++
Routine Description:
EvtIoDeviceControl handler for the default Queue
Arguments:
Queue - Handle to the framework queue object that is associated with the
I/O request.
Request - Handle to a framework request object.
OutputBufferLength - Size of the output buffer in bytes
InputBufferLength - Size of the input buffer in bytes
IoControlCode - I/O control code.
--*/
{
WDFDEVICE WdfDevice;
PCONTROLLER_CONTEXT ControllerContext;
BOOLEAN HandledbyUfx;
TraceEntry();
TraceVerbose("Queue 0x%p, Request 0x%p, OutputBufferLength %d, "
"InputBufferLength %d, IoControlCode %d",
Queue, Request, (int) OutputBufferLength,
(int) InputBufferLength, IoControlCode);
WdfDevice = WdfIoQueueGetDevice(Queue);
ControllerContext = DeviceGetControllerContext(WdfDevice);
HandledbyUfx = UfxDeviceIoControl(
ControllerContext->UfxDevice,
Request,
OutputBufferLength,
InputBufferLength,
IoControlCode);
if (!HandledbyUfx) {
TraceError("Recieved an unsupported IOCTL");
WdfRequestComplete(Request, STATUS_INVALID_DEVICE_REQUEST);
}
TraceExit();
}
VOID
DefaultQueue_EvtIoInternalDeviceControl(
_In_ WDFQUEUE Queue,
_In_ WDFREQUEST Request,
_In_ size_t OutputBufferLength,
_In_ size_t InputBufferLength,
_In_ ULONG IoControlCode
)
/*++
Routine Description:
EvtIoInternalDeviceControl handler for the default Queue
Arguments:
Queue - Handle to the framework queue object that is associated with the
I/O request.
Request - Handle to a framework request object.
OutputBufferLength - Size of the output buffer in bytes
InputBufferLength - Size of the input buffer in bytes
IoControlCode - I/O control code.
--*/
{
WDFDEVICE WdfDevice;
PCONTROLLER_CONTEXT ControllerContext;
BOOLEAN HandledbyUfx;
TraceEntry();
TraceVerbose("InternalQueue 0x%p, Request 0x%p, OutputBufferLength %d, "
"InputBufferLength %d, IoControlCode %d",
Queue, Request, (int) OutputBufferLength,
(int) InputBufferLength, IoControlCode);
WdfDevice = WdfIoQueueGetDevice(Queue);
ControllerContext = DeviceGetControllerContext(WdfDevice);
HandledbyUfx = UfxDeviceIoInternalControl(
ControllerContext->UfxDevice,
Request,
OutputBufferLength,
InputBufferLength,
IoControlCode);
if (!HandledbyUfx) {
TraceError("Recieved an un supported IOCTL");
WdfRequestComplete(Request, STATUS_INVALID_DEVICE_REQUEST);
}
TraceExit();
}
|
