drivers/usb/usbehci/common.c

   1 /*
   2  * PROJECT:     ReactOS Universal Serial Bus Bulk Enhanced Host Controller Interface
   3  * LICENSE:     GPL - See COPYING in the top level directory
   4  * FILE:        drivers/usb/usbehci/common.c
   5  * PURPOSE:     Common operations in FDO/PDO.
   6  * PROGRAMMERS:
   7  *              Michael Martin
   8  */
   9
  10 #define INITGUID
  11 #include "usbehci.h"
  12 #include <wdmguid.h>
  13 #include <stdio.h>
  14 #define NDEBUG
  15 #include <debug.h>
  16
  17 /* PUBLIC AND PRIVATE FUNCTIONS ***********************************************/
  18
  19 NTSTATUS NTAPI
  20 GetBusInterface(PDEVICE_OBJECT DeviceObject, PBUS_INTERFACE_STANDARD busInterface)
  21 {
  22     KEVENT Event;
  23     NTSTATUS Status;
  24     PIRP Irp;
  25     IO_STATUS_BLOCK IoStatus;
  26     PIO_STACK_LOCATION Stack;
  27
  28     if ((!DeviceObject) || (!busInterface))
  29         return STATUS_UNSUCCESSFUL;
  30
  31     KeInitializeEvent(&Event, NotificationEvent, FALSE);
  32
  33     Irp = IoBuildSynchronousFsdRequest(IRP_MJ_PNP,
  34                                        DeviceObject,
  35                                        NULL,
  36                                        0,
  37                                        NULL,
  38                                        &Event,
  39                                        &IoStatus);
  40
  41     if (Irp == NULL)
  42     {
  43         return STATUS_INSUFFICIENT_RESOURCES;
  44     }
  45
  46     Stack=IoGetNextIrpStackLocation(Irp);
  47     Stack->MajorFunction = IRP_MJ_PNP;
  48     Stack->MinorFunction = IRP_MN_QUERY_INTERFACE;
  49     Stack->Parameters.QueryInterface.Size = sizeof(BUS_INTERFACE_STANDARD);
  50     Stack->Parameters.QueryInterface.InterfaceType = (LPGUID)&GUID_BUS_INTERFACE_STANDARD;
  51     Stack->Parameters.QueryInterface.Version = 1;
  52     Stack->Parameters.QueryInterface.Interface = (PINTERFACE)busInterface;
  53     Stack->Parameters.QueryInterface.InterfaceSpecificData = NULL;
  54     Irp->IoStatus.Status=STATUS_NOT_SUPPORTED ;
  55
  56     Status=IoCallDriver(DeviceObject, Irp);
  57
  58     if (Status == STATUS_PENDING)
  59     {
  60         KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
  61
  62         Status=IoStatus.Status;
  63     }
  64
  65     return Status;
  66 }
  67
  68 NTSTATUS NTAPI
  69 ForwardAndWaitCompletionRoutine(PDEVICE_OBJECT DeviceObject, PIRP Irp, PKEVENT Event)
  70 {
  71     if (Irp->PendingReturned)
  72     {
  73         KeSetEvent(Event, IO_NO_INCREMENT, FALSE);
  74     }
  75     return STATUS_MORE_PROCESSING_REQUIRED;
  76 }
  77
  78 NTSTATUS NTAPI
  79 ForwardAndWait(PDEVICE_OBJECT DeviceObject, PIRP Irp)
  80 {
  81     PFDO_DEVICE_EXTENSION DeviceExtensions;
  82     KEVENT Event;
  83     NTSTATUS Status;
  84
  85
  86     DeviceExtensions = DeviceObject->DeviceExtension;
  87     KeInitializeEvent(&Event, NotificationEvent, FALSE);
  88     IoCopyCurrentIrpStackLocationToNext(Irp);
  89     IoSetCompletionRoutine(Irp, (PIO_COMPLETION_ROUTINE)ForwardAndWaitCompletionRoutine, &Event, TRUE, TRUE, TRUE);
  90     Status = IoCallDriver(DeviceExtensions->LowerDevice, Irp);
  91     if (Status == STATUS_PENDING)
  92     {
  93         KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
  94         Status = Irp->IoStatus.Status;
  95     }
  96
  97     return Status;
  98 }
  99
 100 NTSTATUS NTAPI
 101 ForwardIrpAndForget(PDEVICE_OBJECT DeviceObject, PIRP Irp)
 102 {
 103     PDEVICE_OBJECT LowerDevice;
 104
 105     LowerDevice = ((PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->LowerDevice;
 106     ASSERT(LowerDevice);
 107
 108     IoSkipCurrentIrpStackLocation(Irp);
 109     return IoCallDriver(LowerDevice, Irp);
 110 }
 111
 112 /* Copied fom trunk PCI drivers */
 113 NTSTATUS
 114 DuplicateUnicodeString(ULONG Flags, PCUNICODE_STRING SourceString, PUNICODE_STRING DestinationString)
 115 {
 116     if (SourceString == NULL || DestinationString == NULL
 117      || SourceString->Length > SourceString->MaximumLength
 118      || (SourceString->Length == 0 && SourceString->MaximumLength > 0 && SourceString->Buffer == NULL)
 119      || Flags == RTL_DUPLICATE_UNICODE_STRING_ALLOCATE_NULL_STRING || Flags >= 4)
 120     {
 121         return STATUS_INVALID_PARAMETER;
 122     }
 123
 124
 125     if ((SourceString->Length == 0)
 126      && (Flags != (RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE |
 127                    RTL_DUPLICATE_UNICODE_STRING_ALLOCATE_NULL_STRING)))
 128     {
 129         DestinationString->Length = 0;
 130         DestinationString->MaximumLength = 0;
 131         DestinationString->Buffer = NULL;
 132     }
 133     else
 134     {
 135         USHORT DestMaxLength = SourceString->Length;
 136
 137         if (Flags & RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE)
 138             DestMaxLength += sizeof(UNICODE_NULL);
 139
 140         DestinationString->Buffer = ExAllocatePool(PagedPool, DestMaxLength);
 141         if (DestinationString->Buffer == NULL)
 142             return STATUS_NO_MEMORY;
 143
 144         RtlCopyMemory(DestinationString->Buffer, SourceString->Buffer, SourceString->Length);
 145         DestinationString->Length = SourceString->Length;
 146         DestinationString->MaximumLength = DestMaxLength;
 147
 148         if (Flags & RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE)
 149             DestinationString->Buffer[DestinationString->Length / sizeof(WCHAR)] = 0;
 150     }
 151
 152     return STATUS_SUCCESS;
 153 }
 154