pdo.c File Reference

#include "serenum.h"
#include <debug.h>

Include dependency graph for pdo.c:

Go to the source code of this file.

Functions
static NTSTATUS	SerenumPdoStartDevice (IN PDEVICE_OBJECT DeviceObject)
static NTSTATUS	SerenumPdoQueryId (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, OUT ULONG_PTR *Information)
static NTSTATUS	SerenumPdoQueryDeviceRelations (IN PDEVICE_OBJECT DeviceObject, OUT PDEVICE_RELATIONS *pDeviceRelations)
NTSTATUS	SerenumPdoPnp (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)

Function Documentation

SerenumPdoPnp()

NTSTATUS SerenumPdoPnp	(	IN PDEVICE_OBJECT	DeviceObject,
		IN PIRP	Irp
	)

Definition at line 109 of file pdo.c.

{
    ULONG MinorFunction;
    PIO_STACK_LOCATION Stack;
    ULONG_PTR Information = 0;
    NTSTATUS Status;
 
    Stack = IoGetCurrentIrpStackLocation(Irp);
    MinorFunction = Stack->MinorFunction;
 
    switch (MinorFunction)
    {
        /* FIXME: do all these minor functions
        IRP_MN_QUERY_REMOVE_DEVICE 0x1
        IRP_MN_REMOVE_DEVICE 0x2
        IRP_MN_CANCEL_REMOVE_DEVICE 0x3
        IRP_MN_STOP_DEVICE 0x4
        IRP_MN_QUERY_STOP_DEVICE 0x5
        IRP_MN_CANCEL_STOP_DEVICE 0x6
        IRP_MN_QUERY_DEVICE_RELATIONS / EjectionRelations (optional) 0x7
        IRP_MN_QUERY_INTERFACE (required or optional) 0x8
        IRP_MN_READ_CONFIG (required or optional) 0xf
        IRP_MN_WRITE_CONFIG (required or optional) 0x10
        IRP_MN_EJECT (required or optional) 0x11
        IRP_MN_SET_LOCK (required or optional) 0x12
        IRP_MN_QUERY_ID / BusQueryDeviceID 0x13
        IRP_MN_QUERY_ID / BusQueryCompatibleIDs (optional) 0x13
        IRP_MN_QUERY_ID / BusQueryInstanceID (optional) 0x13
        IRP_MN_QUERY_PNP_DEVICE_STATE (optional) 0x14
        IRP_MN_DEVICE_USAGE_NOTIFICATION (required or optional) 0x16
        IRP_MN_SURPRISE_REMOVAL 0x17
        */
        case IRP_MN_START_DEVICE: /* 0x0 */
        {
            TRACE_(SERENUM, "IRP_MJ_PNP / IRP_MN_START_DEVICE\n");
            Status = SerenumPdoStartDevice(DeviceObject);
            break;
        }
        case IRP_MN_QUERY_DEVICE_RELATIONS: /* 0x7 */
        {
            switch (Stack->Parameters.QueryDeviceRelations.Type)
            {
                case RemovalRelations:
                {
                    return ForwardIrpToAttachedFdoAndForget(DeviceObject, Irp);
                }
                case TargetDeviceRelation:
                {
                    PDEVICE_RELATIONS DeviceRelations = NULL;
                    TRACE_(SERENUM, "IRP_MJ_PNP / IRP_MN_QUERY_DEVICE_RELATIONS / TargetDeviceRelation\n");
                    Status = SerenumPdoQueryDeviceRelations(DeviceObject, &DeviceRelations);
                    Information = (ULONG_PTR)DeviceRelations;
                    break;
                }
                default:
                {
                    WARN_(SERENUM, "IRP_MJ_PNP / IRP_MN_QUERY_DEVICE_RELATIONS / Unknown type 0x%lx\n",
                        Stack->Parameters.QueryDeviceRelations.Type);
                    ASSERT(FALSE);
                    Status = STATUS_NOT_IMPLEMENTED;
                    break;
                }
            }
            break;
        }
        case IRP_MN_QUERY_CAPABILITIES: /* 0x9 */
        {
            PDEVICE_CAPABILITIES DeviceCapabilities;
            ULONG i;
            TRACE_(SERENUM, "IRP_MJ_PNP / IRP_MN_QUERY_CAPABILITIES\n");
 
            DeviceCapabilities = (PDEVICE_CAPABILITIES)Stack->Parameters.DeviceCapabilities.Capabilities;
            /* FIXME: capabilities can change with connected device */
            DeviceCapabilities->LockSupported = FALSE;
            DeviceCapabilities->EjectSupported = FALSE;
            DeviceCapabilities->Removable = TRUE;
            DeviceCapabilities->DockDevice = FALSE;
            DeviceCapabilities->UniqueID = FALSE;
            DeviceCapabilities->SilentInstall = FALSE;
            DeviceCapabilities->RawDeviceOK = TRUE;
            DeviceCapabilities->SurpriseRemovalOK = TRUE;
            DeviceCapabilities->HardwareDisabled = FALSE; /* FIXME */
            //DeviceCapabilities->NoDisplayInUI = FALSE; /* FIXME */
            DeviceCapabilities->DeviceState[0] = PowerDeviceD0; /* FIXME */
            for (i = 0; i < PowerSystemMaximum; i++)
                DeviceCapabilities->DeviceState[i] = PowerDeviceD3; /* FIXME */
            //DeviceCapabilities->DeviceWake = PowerDeviceUndefined; /* FIXME */
            DeviceCapabilities->D1Latency = 0; /* FIXME */
            DeviceCapabilities->D2Latency = 0; /* FIXME */
            DeviceCapabilities->D3Latency = 0; /* FIXME */
            Status = STATUS_SUCCESS;
            break;
        }
        case IRP_MN_QUERY_RESOURCES: /* 0xa */
        {
            TRACE_(SERENUM, "IRP_MJ_PNP / IRP_MN_QUERY_RESOURCES\n");
            /* Serial devices don't need resources, except the ones of
             * the serial port. This PDO is the serial device PDO, so
             * report no resource by not changing Information and
             * Status
             */
            Information = Irp->IoStatus.Information;
            Status = Irp->IoStatus.Status;
            break;
        }
        case IRP_MN_QUERY_RESOURCE_REQUIREMENTS: /* 0xb */
        {
            TRACE_(SERENUM, "IRP_MJ_PNP / IRP_MN_QUERY_RESOURCE_REQUIREMENTS\n");
            /* Serial devices don't need resources, except the ones of
             * the serial port. This PDO is the serial device PDO, so
             * report no resource by not changing Information and
             * Status
             */
            Information = Irp->IoStatus.Information;
            Status = Irp->IoStatus.Status;
            break;
        }
        case IRP_MN_QUERY_DEVICE_TEXT: /* 0xc */
        {
            switch (Stack->Parameters.QueryDeviceText.DeviceTextType)
            {
                case DeviceTextDescription:
                {
                    PUNICODE_STRING Source;
                    PWSTR Description;
                    TRACE_(SERENUM, "IRP_MJ_PNP / IRP_MN_QUERY_DEVICE_TEXT / DeviceTextDescription\n");
 
                    Source = &((PPDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->DeviceDescription;
                    Description = ExAllocatePoolWithTag(PagedPool, Source->Length + sizeof(WCHAR), SERENUM_TAG);
                    if (!Description)
                        Status = STATUS_INSUFFICIENT_RESOURCES;
                    else
                    {
                        RtlCopyMemory(Description, Source->Buffer, Source->Length);
                        Description[Source->Length / sizeof(WCHAR)] = L'\0';
                        Information = (ULONG_PTR)Description;
                        Status = STATUS_SUCCESS;
                    }
                    break;
                }
                case DeviceTextLocationInformation:
                {
                    /* We don't have any text location to report,
                     * and this query is optional, so ignore it.
                     */
                    Information = Irp->IoStatus.Information;
                    Status = Irp->IoStatus.Status;
                    break;
                }
                default:
                {
                    WARN_(SERENUM, "IRP_MJ_PNP / IRP_MN_QUERY_DEVICE_TEXT / unknown type 0x%lx\n",
                        Stack->Parameters.QueryDeviceText.DeviceTextType);
                    ASSERT(FALSE);
                    Status = STATUS_NOT_SUPPORTED;
                }
            }
            break;
        }
        case IRP_MN_FILTER_RESOURCE_REQUIREMENTS: /* 0xd */
        {
            return ForwardIrpToAttachedFdoAndForget(DeviceObject, Irp);
        }
        case IRP_MN_QUERY_ID: /* 0x13 */
        {
            Status = SerenumPdoQueryId(DeviceObject, Irp, &Information);
            break;
        }
        case IRP_MN_QUERY_BUS_INFORMATION: /* 0x15 */
        {
            PPNP_BUS_INFORMATION BusInfo;
            TRACE_(SERENUM, "IRP_MJ_PNP / IRP_MN_QUERY_BUS_INFORMATION\n");
 
            BusInfo = (PPNP_BUS_INFORMATION)ExAllocatePoolWithTag(PagedPool, sizeof(PNP_BUS_INFORMATION), SERENUM_TAG);
            if (!BusInfo)
                Status = STATUS_INSUFFICIENT_RESOURCES;
            else
            {
                memcpy(
                    &BusInfo->BusTypeGuid,
                    &GUID_DEVINTERFACE_SERENUM_BUS_ENUMERATOR,
                    sizeof(BusInfo->BusTypeGuid));
                BusInfo->LegacyBusType = PNPBus;
                /* We're the only serial bus enumerator on the computer */
                BusInfo->BusNumber = 0;
                Information = (ULONG_PTR)BusInfo;
                Status = STATUS_SUCCESS;
            }
            break;
        }
        default:
        {
            /* We can't forward request to the lower driver, because
             * we are a Pdo, so we don't have lower driver... */
            WARN_(SERENUM, "IRP_MJ_PNP / unknown minor function 0x%lx\n", MinorFunction);
            ASSERT(FALSE);
            Information = Irp->IoStatus.Information;
            Status = Irp->IoStatus.Status;
        }
    }
 
    Irp->IoStatus.Information = Information;
    Irp->IoStatus.Status = Status;
    IoCompleteRequest(Irp, IO_NO_INCREMENT);
    return Status;
}

Referenced by SerenumPnp().

SerenumPdoQueryDeviceRelations()

static NTSTATUS SerenumPdoQueryDeviceRelations ( IN PDEVICE_OBJECT  DeviceObject, OUT PDEVICE_RELATIONS *  pDeviceRelations  )

static

Definition at line 83 of file pdo.c.

{
    PFDO_DEVICE_EXTENSION DeviceExtension;
    PDEVICE_RELATIONS DeviceRelations;
 
    DeviceExtension = (PFDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
    ASSERT(DeviceExtension->Common.IsFDO);
 
    DeviceRelations = (PDEVICE_RELATIONS)ExAllocatePoolWithTag(
        PagedPool,
        sizeof(DEVICE_RELATIONS),
        SERENUM_TAG);
    if (!DeviceRelations)
        return STATUS_INSUFFICIENT_RESOURCES;
 
    ObReferenceObject(DeviceObject);
    DeviceRelations->Count = 1;
    DeviceRelations->Objects[0] = DeviceObject;
 
    *pDeviceRelations = DeviceRelations;
    return STATUS_SUCCESS;
}

Referenced by SerenumPdoPnp().

SerenumPdoQueryId()

static NTSTATUS SerenumPdoQueryId ( IN PDEVICE_OBJECT  DeviceObject, IN PIRP  Irp, OUT ULONG_PTR *  Information  )

static

Definition at line 29 of file pdo.c.

{
    PPDO_DEVICE_EXTENSION DeviceExtension;
    ULONG IdType;
    PUNICODE_STRING SourceString;
    UNICODE_STRING String;
    NTSTATUS Status;
 
    IdType = IoGetCurrentIrpStackLocation(Irp)->Parameters.QueryId.IdType;
    DeviceExtension = (PPDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
    RtlInitUnicodeString(&String, NULL);
 
    switch (IdType)
    {
        case BusQueryDeviceID:
        {
            TRACE_(SERENUM, "IRP_MJ_PNP / IRP_MN_QUERY_ID / BusQueryDeviceID\n");
            SourceString = &DeviceExtension->DeviceId;
            break;
        }
        case BusQueryHardwareIDs:
        {
            TRACE_(SERENUM, "IRP_MJ_PNP / IRP_MN_QUERY_ID / BusQueryHardwareIDs\n");
            SourceString = &DeviceExtension->HardwareIds;
            break;
        }
        case BusQueryCompatibleIDs:
            TRACE_(SERENUM, "IRP_MJ_PNP / IRP_MN_QUERY_ID / BusQueryCompatibleIDs\n");
            SourceString = &DeviceExtension->CompatibleIds;
            break;
        case BusQueryInstanceID:
        {
            TRACE_(SERENUM, "IRP_MJ_PNP / IRP_MN_QUERY_ID / BusQueryInstanceID\n");
            SourceString = &DeviceExtension->InstanceId;
            break;
        }
        default:
            WARN_(SERENUM, "IRP_MJ_PNP / IRP_MN_QUERY_ID / unknown query id type 0x%lx\n", IdType);
            ASSERT(FALSE);
            return STATUS_NOT_SUPPORTED;
    }
 
    Status = DuplicateUnicodeString(
        RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE,
        SourceString,
        &String);
    *Information = (ULONG_PTR)String.Buffer;
    return Status;
}

Referenced by SerenumPdoPnp().

SerenumPdoStartDevice()

static NTSTATUS SerenumPdoStartDevice ( IN PDEVICE_OBJECT  DeviceObject )

static

Definition at line 15 of file pdo.c.

{
    PPDO_DEVICE_EXTENSION DeviceExtension;
 
    DeviceExtension = (PPDO_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
 
    ASSERT(DeviceExtension->Common.PnpState == dsStopped);
 
    DeviceExtension->Common.PnpState = dsStarted;
    return STATUS_SUCCESS;
}

Referenced by SerenumPdoPnp().