mirror of
https://github.com/nefarius/ViGEmBus.git
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150 lines
3.8 KiB
C
150 lines
3.8 KiB
C
/*
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* Virtual Gamepad Emulation Framework - Windows kernel-mode bus driver
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*
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* BSD 3-Clause License
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*
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* Copyright (c) 2018-2022, Nefarius Software Solutions e.U. and Contributors
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#pragma warning(disable:5040)
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#include <DmfModules.Library.h>
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#pragma warning(default:5040)
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#include <ntddk.h>
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#include <wdf.h>
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#define NTSTRSAFE_LIB
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#include <ntstrsafe.h>
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#pragma region Macros
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#define DRIVERNAME "ViGEm: "
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#pragma endregion
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//
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// FDO (bus device) context data
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//
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typedef struct _FDO_DEVICE_DATA
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{
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//
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// Counter of interface references
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//
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LONG InterfaceReferenceCounter;
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//
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// Next SessionId to assign to a file handle
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//
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LONG NextSessionId;
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//
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// Notification DMF module
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//
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DMFMODULE UserNotification;
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} FDO_DEVICE_DATA, * PFDO_DEVICE_DATA;
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#define FDO_FIRST_SESSION_ID 100
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WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(FDO_DEVICE_DATA, FdoGetData)
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//
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// Context data associated with file objects created by user mode applications
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//
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typedef struct _FDO_FILE_DATA
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{
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//
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// SessionId associated with file handle.
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// Used to map file handles to emulated gamepad devices.
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//
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LONG SessionId;
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} FDO_FILE_DATA, * PFDO_FILE_DATA;
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WDF_DECLARE_CONTEXT_TYPE_WITH_NAME(FDO_FILE_DATA, FileObjectGetData)
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EXTERN_C_START
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#pragma region WDF callback prototypes
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DRIVER_INITIALIZE DriverEntry;
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EVT_WDF_DRIVER_DEVICE_ADD Bus_EvtDeviceAdd;
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EVT_WDF_DEVICE_FILE_CREATE Bus_DeviceFileCreate;
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EVT_WDF_FILE_CLOSE Bus_FileClose;
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EVT_WDF_CHILD_LIST_CREATE_DEVICE Bus_EvtDeviceListCreatePdo;
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EVT_WDF_OBJECT_CONTEXT_CLEANUP Bus_EvtDriverContextCleanup;
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#pragma endregion
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_IRQL_requires_max_(PASSIVE_LEVEL)
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VOID
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DmfDeviceModulesAdd(
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_In_ WDFDEVICE Device,
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_In_ PDMFMODULE_INIT DmfModuleInit
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);
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void Bus_EvtUserNotifyRequestComplete(
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_In_ DMFMODULE DmfModule,
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_In_ WDFREQUEST Request,
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_In_opt_ ULONG_PTR Context,
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_In_ NTSTATUS NtStatus
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);
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void Util_DumpAsHex(PCSTR Prefix, PVOID Buffer, ULONG BufferLength);
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#pragma region Bus enumeration-specific functions
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NTSTATUS
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Bus_PlugInDevice(
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_In_ WDFDEVICE Device,
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_In_ WDFREQUEST Request,
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_In_ BOOLEAN IsInternal,
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_Out_ size_t* Transferred
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);
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NTSTATUS
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Bus_UnPlugDevice(
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_In_ WDFDEVICE Device,
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_In_ WDFREQUEST Request,
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_In_ BOOLEAN IsInternal,
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_Out_ size_t* Transferred
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);
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#pragma endregion
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EXTERN_C_END
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