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ViGEmBus/sys/xusb.c
Benjamin Höglinger-Stelzer 71e30c3497 Updated license
2018-08-25 22:17:27 +02:00

616 lines
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/*
* Virtual Gamepad Emulation Framework - Windows kernel-mode bus driver
* Copyright (C) 2016-2018 Benjamin Höglinger-Stelzer
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "busenum.h"
#include "xusb.tmh"
NTSTATUS Xusb_PreparePdo(
PWDFDEVICE_INIT DeviceInit,
USHORT VendorId,
USHORT ProductId,
PUNICODE_STRING DeviceId,
PUNICODE_STRING DeviceDescription)
{
NTSTATUS status;
DECLARE_UNICODE_STRING_SIZE(buffer, MAX_HARDWARE_ID_LENGTH);
// prepare device description
status = RtlUnicodeStringInit(DeviceDescription, L"Virtual Xbox 360 Controller");
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_XUSB,
"RtlUnicodeStringInit failed with status %!STATUS!",
status);
return status;
}
// Set hardware ID
RtlUnicodeStringPrintf(&buffer, L"USB\\VID_%04X&PID_%04X", VendorId, ProductId);
RtlUnicodeStringCopy(DeviceId, &buffer);
status = WdfPdoInitAddHardwareID(DeviceInit, &buffer);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_XUSB,
"WdfPdoInitAddHardwareID failed with status %!STATUS!",
status);
return status;
}
// Set compatible IDs
RtlUnicodeStringInit(&buffer, L"USB\\MS_COMP_XUSB10");
status = WdfPdoInitAddCompatibleID(DeviceInit, &buffer);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_XUSB,
"WdfPdoInitAddCompatibleID #1 failed with status %!STATUS!",
status);
return status;
}
RtlUnicodeStringInit(&buffer, L"USB\\Class_FF&SubClass_5D&Prot_01");
status = WdfPdoInitAddCompatibleID(DeviceInit, &buffer);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_XUSB,
"WdfPdoInitAddCompatibleID #2 failed with status %!STATUS!",
status);
return status;
}
RtlUnicodeStringInit(&buffer, L"USB\\Class_FF&SubClass_5D");
status = WdfPdoInitAddCompatibleID(DeviceInit, &buffer);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_XUSB,
"WdfPdoInitAddCompatibleID #3 failed with status %!STATUS!",
status);
return status;
}
RtlUnicodeStringInit(&buffer, L"USB\\Class_FF");
status = WdfPdoInitAddCompatibleID(DeviceInit, &buffer);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_XUSB,
"WdfPdoInitAddCompatibleID #4 failed with status %!STATUS!",
status);
return status;
}
return STATUS_SUCCESS;
}
NTSTATUS Xusb_PrepareHardware(WDFDEVICE Device)
{
NTSTATUS status;
WDF_QUERY_INTERFACE_CONFIG ifaceCfg;
INTERFACE dummyIface;
dummyIface.Size = sizeof(INTERFACE);
dummyIface.Version = 1;
dummyIface.Context = (PVOID)Device;
dummyIface.InterfaceReference = WdfDeviceInterfaceReferenceNoOp;
dummyIface.InterfaceDereference = WdfDeviceInterfaceDereferenceNoOp;
/* XUSB.sys will query for the following three (unknown) interfaces
* BUT WONT USE IT so we just expose them to satisfy initialization. */
// Dummy 0
WDF_QUERY_INTERFACE_CONFIG_INIT(&ifaceCfg, (PINTERFACE)&dummyIface, &GUID_DEVINTERFACE_XUSB_UNKNOWN_0, NULL);
status = WdfDeviceAddQueryInterface(Device, &ifaceCfg);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_XUSB,
"Couldn't register unknown interface GUID: %08X-%04X-%04X-%02X%02X%02X%02X%02X%02X%02X%02X " \
"(WdfDeviceAddQueryInterface failed with status %!STATUS!)",
GUID_DEVINTERFACE_XUSB_UNKNOWN_0.Data1,
GUID_DEVINTERFACE_XUSB_UNKNOWN_0.Data2,
GUID_DEVINTERFACE_XUSB_UNKNOWN_0.Data3,
GUID_DEVINTERFACE_XUSB_UNKNOWN_0.Data4[0],
GUID_DEVINTERFACE_XUSB_UNKNOWN_0.Data4[1],
GUID_DEVINTERFACE_XUSB_UNKNOWN_0.Data4[2],
GUID_DEVINTERFACE_XUSB_UNKNOWN_0.Data4[3],
GUID_DEVINTERFACE_XUSB_UNKNOWN_0.Data4[4],
GUID_DEVINTERFACE_XUSB_UNKNOWN_0.Data4[5],
GUID_DEVINTERFACE_XUSB_UNKNOWN_0.Data4[6],
GUID_DEVINTERFACE_XUSB_UNKNOWN_0.Data4[7],
status);
return status;
}
// Dummy 1
WDF_QUERY_INTERFACE_CONFIG_INIT(&ifaceCfg, (PINTERFACE)&dummyIface, &GUID_DEVINTERFACE_XUSB_UNKNOWN_1, NULL);
status = WdfDeviceAddQueryInterface(Device, &ifaceCfg);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_XUSB,
"Couldn't register unknown interface GUID: %08X-%04X-%04X-%02X%02X%02X%02X%02X%02X%02X%02X " \
"(WdfDeviceAddQueryInterface failed with status %!STATUS!)",
GUID_DEVINTERFACE_XUSB_UNKNOWN_1.Data1,
GUID_DEVINTERFACE_XUSB_UNKNOWN_1.Data2,
GUID_DEVINTERFACE_XUSB_UNKNOWN_1.Data3,
GUID_DEVINTERFACE_XUSB_UNKNOWN_1.Data4[0],
GUID_DEVINTERFACE_XUSB_UNKNOWN_1.Data4[1],
GUID_DEVINTERFACE_XUSB_UNKNOWN_1.Data4[2],
GUID_DEVINTERFACE_XUSB_UNKNOWN_1.Data4[3],
GUID_DEVINTERFACE_XUSB_UNKNOWN_1.Data4[4],
GUID_DEVINTERFACE_XUSB_UNKNOWN_1.Data4[5],
GUID_DEVINTERFACE_XUSB_UNKNOWN_1.Data4[6],
GUID_DEVINTERFACE_XUSB_UNKNOWN_1.Data4[7],
status);
return status;
}
// Dummy 2
WDF_QUERY_INTERFACE_CONFIG_INIT(&ifaceCfg, (PINTERFACE)&dummyIface, &GUID_DEVINTERFACE_XUSB_UNKNOWN_2, NULL);
status = WdfDeviceAddQueryInterface(Device, &ifaceCfg);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_XUSB,
"Couldn't register unknown interface GUID: %08X-%04X-%04X-%02X%02X%02X%02X%02X%02X%02X%02X " \
"(WdfDeviceAddQueryInterface failed with status %!STATUS!)",
GUID_DEVINTERFACE_XUSB_UNKNOWN_2.Data1,
GUID_DEVINTERFACE_XUSB_UNKNOWN_2.Data2,
GUID_DEVINTERFACE_XUSB_UNKNOWN_2.Data3,
GUID_DEVINTERFACE_XUSB_UNKNOWN_2.Data4[0],
GUID_DEVINTERFACE_XUSB_UNKNOWN_2.Data4[1],
GUID_DEVINTERFACE_XUSB_UNKNOWN_2.Data4[2],
GUID_DEVINTERFACE_XUSB_UNKNOWN_2.Data4[3],
GUID_DEVINTERFACE_XUSB_UNKNOWN_2.Data4[4],
GUID_DEVINTERFACE_XUSB_UNKNOWN_2.Data4[5],
GUID_DEVINTERFACE_XUSB_UNKNOWN_2.Data4[6],
GUID_DEVINTERFACE_XUSB_UNKNOWN_2.Data4[7],
status);
return status;
}
// Expose USB_BUS_INTERFACE_USBDI_GUID
// This interface actually IS used
USB_BUS_INTERFACE_USBDI_V1 xusbInterface;
xusbInterface.Size = sizeof(USB_BUS_INTERFACE_USBDI_V1);
xusbInterface.Version = USB_BUSIF_USBDI_VERSION_1;
xusbInterface.BusContext = (PVOID)Device;
xusbInterface.InterfaceReference = WdfDeviceInterfaceReferenceNoOp;
xusbInterface.InterfaceDereference = WdfDeviceInterfaceDereferenceNoOp;
xusbInterface.SubmitIsoOutUrb = UsbPdo_SubmitIsoOutUrb;
xusbInterface.GetUSBDIVersion = UsbPdo_GetUSBDIVersion;
xusbInterface.QueryBusTime = UsbPdo_QueryBusTime;
xusbInterface.QueryBusInformation = UsbPdo_QueryBusInformation;
xusbInterface.IsDeviceHighSpeed = UsbPdo_IsDeviceHighSpeed;
WDF_QUERY_INTERFACE_CONFIG_INIT(&ifaceCfg, (PINTERFACE)&xusbInterface, &USB_BUS_INTERFACE_USBDI_GUID, NULL);
status = WdfDeviceAddQueryInterface(Device, &ifaceCfg);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_XUSB,
"WdfDeviceAddQueryInterface failed with status %!STATUS!",
status);
return status;
}
return STATUS_SUCCESS;
}
NTSTATUS Xusb_AssignPdoContext(WDFDEVICE Device)
{
NTSTATUS status;
WDF_OBJECT_ATTRIBUTES attributes;
WDF_OBJECT_ATTRIBUTES_INIT(&attributes);
attributes.ParentObject = Device;
TraceEvents(TRACE_LEVEL_VERBOSE, TRACE_XUSB, "Initializing XUSB context...");
PXUSB_DEVICE_DATA xusb = XusbGetData(Device);
RtlZeroMemory(xusb, sizeof(XUSB_DEVICE_DATA));
// Is later overwritten by actual XInput slot
xusb->LedNumber = -1;
// Packet size (20 bytes = 0x14)
xusb->Packet.Size = 0x14;
// I/O Queue for pending IRPs
WDF_IO_QUEUE_CONFIG holdingInQueueConfig;
// Create and assign queue for unhandled interrupt requests
WDF_IO_QUEUE_CONFIG_INIT(&holdingInQueueConfig, WdfIoQueueDispatchManual);
status = WdfIoQueueCreate(Device, &holdingInQueueConfig, WDF_NO_OBJECT_ATTRIBUTES, &xusb->HoldingUsbInRequests);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_XUSB,
"WdfIoQueueCreate (HoldingUsbInRequests) failed with status %!STATUS!",
status);
return status;
}
return STATUS_SUCCESS;
}
VOID Xusb_GetConfigurationDescriptorType(PUCHAR Buffer, ULONG Length)
{
UCHAR XusbDescriptorData[XUSB_DESCRIPTOR_SIZE] =
{
0x09, // bLength
0x02, // bDescriptorType (Configuration)
0x99, 0x00, // wTotalLength 153
0x04, // bNumInterfaces 4
0x01, // bConfigurationValue
0x00, // iConfiguration (String Index)
0xA0, // bmAttributes Remote Wakeup
0xFA, // bMaxPower 500mA
0x09, // bLength
0x04, // bDescriptorType (Interface)
0x00, // bInterfaceNumber 0
0x00, // bAlternateSetting
0x02, // bNumEndpoints 2
0xFF, // bInterfaceClass
0x5D, // bInterfaceSubClass
0x01, // bInterfaceProtocol
0x00, // iInterface (String Index)
0x11, // bLength
0x21, // bDescriptorType (HID)
0x00, 0x01, // bcdHID 1.00
0x01, // bCountryCode
0x25, // bNumDescriptors
0x81, // bDescriptorType[0] (Unknown 0x81)
0x14, 0x00, // wDescriptorLength[0] 20
0x00, // bDescriptorType[1] (Unknown 0x00)
0x00, 0x00, // wDescriptorLength[1] 0
0x13, // bDescriptorType[2] (Unknown 0x13)
0x01, 0x08, // wDescriptorLength[2] 2049
0x00, // bDescriptorType[3] (Unknown 0x00)
0x00,
0x07, // bLength
0x05, // bDescriptorType (Endpoint)
0x81, // bEndpointAddress (IN/D2H)
0x03, // bmAttributes (Interrupt)
0x20, 0x00, // wMaxPacketSize 32
0x04, // bInterval 4 (unit depends on device speed)
0x07, // bLength
0x05, // bDescriptorType (Endpoint)
0x01, // bEndpointAddress (OUT/H2D)
0x03, // bmAttributes (Interrupt)
0x20, 0x00, // wMaxPacketSize 32
0x08, // bInterval 8 (unit depends on device speed)
0x09, // bLength
0x04, // bDescriptorType (Interface)
0x01, // bInterfaceNumber 1
0x00, // bAlternateSetting
0x04, // bNumEndpoints 4
0xFF, // bInterfaceClass
0x5D, // bInterfaceSubClass
0x03, // bInterfaceProtocol
0x00, // iInterface (String Index)
0x1B, // bLength
0x21, // bDescriptorType (HID)
0x00, 0x01, // bcdHID 1.00
0x01, // bCountryCode
0x01, // bNumDescriptors
0x82, // bDescriptorType[0] (Unknown 0x82)
0x40, 0x01, // wDescriptorLength[0] 320
0x02, 0x20, 0x16, 0x83, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x07, // bLength
0x05, // bDescriptorType (Endpoint)
0x82, // bEndpointAddress (IN/D2H)
0x03, // bmAttributes (Interrupt)
0x20, 0x00, // wMaxPacketSize 32
0x02, // bInterval 2 (unit depends on device speed)
0x07, // bLength
0x05, // bDescriptorType (Endpoint)
0x02, // bEndpointAddress (OUT/H2D)
0x03, // bmAttributes (Interrupt)
0x20, 0x00, // wMaxPacketSize 32
0x04, // bInterval 4 (unit depends on device speed)
0x07, // bLength
0x05, // bDescriptorType (Endpoint)
0x83, // bEndpointAddress (IN/D2H)
0x03, // bmAttributes (Interrupt)
0x20, 0x00, // wMaxPacketSize 32
0x40, // bInterval 64 (unit depends on device speed)
0x07, // bLength
0x05, // bDescriptorType (Endpoint)
0x03, // bEndpointAddress (OUT/H2D)
0x03, // bmAttributes (Interrupt)
0x20, 0x00, // wMaxPacketSize 32
0x10, // bInterval 16 (unit depends on device speed)
0x09, // bLength
0x04, // bDescriptorType (Interface)
0x02, // bInterfaceNumber 2
0x00, // bAlternateSetting
0x01, // bNumEndpoints 1
0xFF, // bInterfaceClass
0x5D, // bInterfaceSubClass
0x02, // bInterfaceProtocol
0x00, // iInterface (String Index)
0x09, // bLength
0x21, // bDescriptorType (HID)
0x00, 0x01, // bcdHID 1.00
0x01, // bCountryCode
0x22, // bNumDescriptors
0x84, // bDescriptorType[0] (Unknown 0x84)
0x07, 0x00, // wDescriptorLength[0] 7
0x07, // bLength
0x05, // bDescriptorType (Endpoint)
0x84, // bEndpointAddress (IN/D2H)
0x03, // bmAttributes (Interrupt)
0x20, 0x00, // wMaxPacketSize 32
0x10, // bInterval 16 (unit depends on device speed)
0x09, // bLength
0x04, // bDescriptorType (Interface)
0x03, // bInterfaceNumber 3
0x00, // bAlternateSetting
0x00, // bNumEndpoints 0
0xFF, // bInterfaceClass
0xFD, // bInterfaceSubClass
0x13, // bInterfaceProtocol
0x04, // iInterface (String Index)
0x06, // bLength
0x41, // bDescriptorType (Unknown)
0x00, 0x01, 0x01, 0x03,
// 153 bytes
// best guess: USB Standard Descriptor
};
RtlCopyBytes(Buffer, XusbDescriptorData, Length);
}
VOID Xusb_GetDeviceDescriptorType(PUSB_DEVICE_DESCRIPTOR pDescriptor, PPDO_DEVICE_DATA pCommon)
{
pDescriptor->bLength = 0x12;
pDescriptor->bDescriptorType = USB_DEVICE_DESCRIPTOR_TYPE;
pDescriptor->bcdUSB = 0x0200; // USB v2.0
pDescriptor->bDeviceClass = 0xFF;
pDescriptor->bDeviceSubClass = 0xFF;
pDescriptor->bDeviceProtocol = 0xFF;
pDescriptor->bMaxPacketSize0 = 0x08;
pDescriptor->idVendor = pCommon->VendorId;
pDescriptor->idProduct = pCommon->ProductId;
pDescriptor->bcdDevice = 0x0114;
pDescriptor->iManufacturer = 0x01;
pDescriptor->iProduct = 0x02;
pDescriptor->iSerialNumber = 0x03;
pDescriptor->bNumConfigurations = 0x01;
}
VOID Xusb_SelectConfiguration(PUSBD_INTERFACE_INFORMATION pInfo)
{
TraceEvents(TRACE_LEVEL_VERBOSE,
TRACE_XUSB,
">> >> >> URB_FUNCTION_SELECT_CONFIGURATION: Length %d, Interface %d, Alternate %d, Pipes %d",
(int)pInfo->Length,
(int)pInfo->InterfaceNumber,
(int)pInfo->AlternateSetting,
pInfo->NumberOfPipes);
pInfo->Class = 0xFF;
pInfo->SubClass = 0x5D;
pInfo->Protocol = 0x01;
pInfo->InterfaceHandle = (USBD_INTERFACE_HANDLE)0xFFFF0000;
pInfo->Pipes[0].MaximumTransferSize = 0x00400000;
pInfo->Pipes[0].MaximumPacketSize = 0x20;
pInfo->Pipes[0].EndpointAddress = 0x81;
pInfo->Pipes[0].Interval = 0x04;
pInfo->Pipes[0].PipeType = 0x03;
pInfo->Pipes[0].PipeHandle = (USBD_PIPE_HANDLE)0xFFFF0081;
pInfo->Pipes[0].PipeFlags = 0x00;
pInfo->Pipes[1].MaximumTransferSize = 0x00400000;
pInfo->Pipes[1].MaximumPacketSize = 0x20;
pInfo->Pipes[1].EndpointAddress = 0x01;
pInfo->Pipes[1].Interval = 0x08;
pInfo->Pipes[1].PipeType = 0x03;
pInfo->Pipes[1].PipeHandle = (USBD_PIPE_HANDLE)0xFFFF0001;
pInfo->Pipes[1].PipeFlags = 0x00;
pInfo = (PUSBD_INTERFACE_INFORMATION)((PCHAR)pInfo + pInfo->Length);
TraceEvents(TRACE_LEVEL_VERBOSE,
TRACE_XUSB,
">> >> >> URB_FUNCTION_SELECT_CONFIGURATION: Length %d, Interface %d, Alternate %d, Pipes %d",
(int)pInfo->Length,
(int)pInfo->InterfaceNumber,
(int)pInfo->AlternateSetting,
pInfo->NumberOfPipes);
pInfo->Class = 0xFF;
pInfo->SubClass = 0x5D;
pInfo->Protocol = 0x03;
pInfo->InterfaceHandle = (USBD_INTERFACE_HANDLE)0xFFFF0000;
pInfo->Pipes[0].MaximumTransferSize = 0x00400000;
pInfo->Pipes[0].MaximumPacketSize = 0x20;
pInfo->Pipes[0].EndpointAddress = 0x82;
pInfo->Pipes[0].Interval = 0x04;
pInfo->Pipes[0].PipeType = 0x03;
pInfo->Pipes[0].PipeHandle = (USBD_PIPE_HANDLE)0xFFFF0082;
pInfo->Pipes[0].PipeFlags = 0x00;
pInfo->Pipes[1].MaximumTransferSize = 0x00400000;
pInfo->Pipes[1].MaximumPacketSize = 0x20;
pInfo->Pipes[1].EndpointAddress = 0x02;
pInfo->Pipes[1].Interval = 0x08;
pInfo->Pipes[1].PipeType = 0x03;
pInfo->Pipes[1].PipeHandle = (USBD_PIPE_HANDLE)0xFFFF0002;
pInfo->Pipes[1].PipeFlags = 0x00;
pInfo->Pipes[2].MaximumTransferSize = 0x00400000;
pInfo->Pipes[2].MaximumPacketSize = 0x20;
pInfo->Pipes[2].EndpointAddress = 0x83;
pInfo->Pipes[2].Interval = 0x08;
pInfo->Pipes[2].PipeType = 0x03;
pInfo->Pipes[2].PipeHandle = (USBD_PIPE_HANDLE)0xFFFF0083;
pInfo->Pipes[2].PipeFlags = 0x00;
pInfo->Pipes[3].MaximumTransferSize = 0x00400000;
pInfo->Pipes[3].MaximumPacketSize = 0x20;
pInfo->Pipes[3].EndpointAddress = 0x03;
pInfo->Pipes[3].Interval = 0x08;
pInfo->Pipes[3].PipeType = 0x03;
pInfo->Pipes[3].PipeHandle = (USBD_PIPE_HANDLE)0xFFFF0003;
pInfo->Pipes[3].PipeFlags = 0x00;
pInfo = (PUSBD_INTERFACE_INFORMATION)((PCHAR)pInfo + pInfo->Length);
TraceEvents(TRACE_LEVEL_VERBOSE,
TRACE_XUSB,
">> >> >> URB_FUNCTION_SELECT_CONFIGURATION: Length %d, Interface %d, Alternate %d, Pipes %d",
(int)pInfo->Length,
(int)pInfo->InterfaceNumber,
(int)pInfo->AlternateSetting,
pInfo->NumberOfPipes);
pInfo->Class = 0xFF;
pInfo->SubClass = 0x5D;
pInfo->Protocol = 0x02;
pInfo->InterfaceHandle = (USBD_INTERFACE_HANDLE)0xFFFF0000;
pInfo->Pipes[0].MaximumTransferSize = 0x00400000;
pInfo->Pipes[0].MaximumPacketSize = 0x20;
pInfo->Pipes[0].EndpointAddress = 0x84;
pInfo->Pipes[0].Interval = 0x04;
pInfo->Pipes[0].PipeType = 0x03;
pInfo->Pipes[0].PipeHandle = (USBD_PIPE_HANDLE)0xFFFF0084;
pInfo->Pipes[0].PipeFlags = 0x00;
pInfo = (PUSBD_INTERFACE_INFORMATION)((PCHAR)pInfo + pInfo->Length);
TraceEvents(TRACE_LEVEL_VERBOSE,
TRACE_XUSB,
">> >> >> URB_FUNCTION_SELECT_CONFIGURATION: Length %d, Interface %d, Alternate %d, Pipes %d",
(int)pInfo->Length,
(int)pInfo->InterfaceNumber,
(int)pInfo->AlternateSetting,
pInfo->NumberOfPipes);
pInfo->Class = 0xFF;
pInfo->SubClass = 0xFD;
pInfo->Protocol = 0x13;
pInfo->InterfaceHandle = (USBD_INTERFACE_HANDLE)0xFFFF0000;
}
NTSTATUS Xusb_GetUserIndex(WDFDEVICE Device, PXUSB_GET_USER_INDEX Request)
{
NTSTATUS status = STATUS_INVALID_DEVICE_REQUEST;
WDFDEVICE hChild;
PPDO_DEVICE_DATA pdoData;
CHAR userIndex;
TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_XUSB, "%!FUNC! Entry");
hChild = Bus_GetPdo(Device, Request->SerialNo);
// Validate child
if (hChild == NULL)
{
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_XUSB,
"Bus_GetPdo for serial %d failed", Request->SerialNo);
return STATUS_NO_SUCH_DEVICE;
}
// Check common context
pdoData = PdoGetData(hChild);
if (pdoData == NULL)
{
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_XUSB,
"PdoGetData failed");
return STATUS_INVALID_PARAMETER;
}
// Check if caller owns this PDO
if (!IS_OWNER(pdoData))
{
TraceEvents(TRACE_LEVEL_ERROR,
TRACE_XUSB,
"PID mismatch: %d != %d",
pdoData->OwnerProcessId,
CURRENT_PROCESS_ID());
return STATUS_ACCESS_DENIED;
}
userIndex = XusbGetData(hChild)->LedNumber;
if (userIndex >= 0)
{
Request->UserIndex = (ULONG)userIndex;
status = STATUS_SUCCESS;
}
TraceEvents(TRACE_LEVEL_VERBOSE, TRACE_XUSB, "%!FUNC! Exit with status %!STATUS!", status);
return status;
}
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