/*
 * PROJECT:         ReactOS PCI Bus Driver
 * LICENSE:         BSD - See COPYING.ARM in the top level directory
 * FILE:            drivers/bus/pci/pdo.c
 * PURPOSE:         PDO Device Management
 * PROGRAMMERS:     ReactOS Portable Systems Group
 */

/* INCLUDES *******************************************************************/

#include <pci.h>
#define NDEBUG
#include <debug.h>

/* GLOBALS ********************************************************************/

LONG PciPdoSequenceNumber;

C_ASSERT(FIELD_OFFSET(PCI_FDO_EXTENSION, DeviceState) == FIELD_OFFSET(PCI_PDO_EXTENSION, DeviceState));
C_ASSERT(FIELD_OFFSET(PCI_FDO_EXTENSION, TentativeNextState) == FIELD_OFFSET(PCI_PDO_EXTENSION, TentativeNextState));
C_ASSERT(FIELD_OFFSET(PCI_FDO_EXTENSION, List) == FIELD_OFFSET(PCI_PDO_EXTENSION, Next));

PCI_MN_DISPATCH_TABLE PciPdoDispatchPowerTable[] =
{
    {IRP_DISPATCH, (PCI_DISPATCH_FUNCTION)PciPdoWaitWake},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciIrpNotSupported},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoSetPowerState},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpQueryPower},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciIrpNotSupported}
};

PCI_MN_DISPATCH_TABLE PciPdoDispatchPnpTable[] =
{
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpStartDevice},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpQueryRemoveDevice},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpRemoveDevice},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpCancelRemoveDevice},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpStopDevice},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpQueryStopDevice},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpCancelStopDevice},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpQueryDeviceRelations},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpQueryInterface},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpQueryCapabilities},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpQueryResources},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpQueryResourceRequirements},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpQueryDeviceText},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciIrpNotSupported},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciIrpNotSupported},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpReadConfig},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpWriteConfig},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciIrpNotSupported},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciIrpNotSupported},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpQueryId},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpQueryDeviceState},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpQueryBusInformation},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpDeviceUsageNotification},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpSurpriseRemoval},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciPdoIrpQueryLegacyBusInformation},
    {IRP_COMPLETE, (PCI_DISPATCH_FUNCTION)PciIrpNotSupported}
};

PCI_MJ_DISPATCH_TABLE PciPdoDispatchTable =
{
    IRP_MN_QUERY_LEGACY_BUS_INFORMATION,
    PciPdoDispatchPnpTable,
    IRP_MN_QUERY_POWER,
    PciPdoDispatchPowerTable,
    IRP_COMPLETE,
    (PCI_DISPATCH_FUNCTION)PciIrpNotSupported,
    IRP_COMPLETE,
    (PCI_DISPATCH_FUNCTION)PciIrpInvalidDeviceRequest
};

/* FUNCTIONS ******************************************************************/

NTSTATUS
NTAPI
PciPdoWaitWake(IN PIRP Irp,
               IN PIO_STACK_LOCATION IoStackLocation,
               IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoSetPowerState(IN PIRP Irp,
                    IN PIO_STACK_LOCATION IoStackLocation,
                    IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpQueryPower(IN PIRP Irp,
                    IN PIO_STACK_LOCATION IoStackLocation,
                    IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpStartDevice(IN PIRP Irp,
                     IN PIO_STACK_LOCATION IoStackLocation,
                     IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpQueryRemoveDevice(IN PIRP Irp,
                           IN PIO_STACK_LOCATION IoStackLocation,
                           IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpRemoveDevice(IN PIRP Irp,
                      IN PIO_STACK_LOCATION IoStackLocation,
                      IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpCancelRemoveDevice(IN PIRP Irp,
                            IN PIO_STACK_LOCATION IoStackLocation,
                            IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpStopDevice(IN PIRP Irp,
                    IN PIO_STACK_LOCATION IoStackLocation,
                    IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpQueryStopDevice(IN PIRP Irp,
                         IN PIO_STACK_LOCATION IoStackLocation,
                         IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpCancelStopDevice(IN PIRP Irp,
                          IN PIO_STACK_LOCATION IoStackLocation,
                          IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpQueryInterface(IN PIRP Irp,
                        IN PIO_STACK_LOCATION IoStackLocation,
                        IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpQueryDeviceRelations(IN PIRP Irp,
                              IN PIO_STACK_LOCATION IoStackLocation,
                              IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpQueryCapabilities(IN PIRP Irp,
                           IN PIO_STACK_LOCATION IoStackLocation,
                           IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpQueryResources(IN PIRP Irp,
                        IN PIO_STACK_LOCATION IoStackLocation,
                        IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpQueryResourceRequirements(IN PIRP Irp,
                                   IN PIO_STACK_LOCATION IoStackLocation,
                                   IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpQueryDeviceText(IN PIRP Irp,
                         IN PIO_STACK_LOCATION IoStackLocation,
                         IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpQueryId(IN PIRP Irp,
                 IN PIO_STACK_LOCATION IoStackLocation,
                 IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpQueryBusInformation(IN PIRP Irp,
                             IN PIO_STACK_LOCATION IoStackLocation,
                             IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpReadConfig(IN PIRP Irp,
                    IN PIO_STACK_LOCATION IoStackLocation,
                    IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpWriteConfig(IN PIRP Irp,
                     IN PIO_STACK_LOCATION IoStackLocation,
                     IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpQueryDeviceState(IN PIRP Irp,
                          IN PIO_STACK_LOCATION IoStackLocation,
                          IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpDeviceUsageNotification(IN PIRP Irp,
                                 IN PIO_STACK_LOCATION IoStackLocation,
                                 IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpSurpriseRemoval(IN PIRP Irp,
                         IN PIO_STACK_LOCATION IoStackLocation,
                         IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoIrpQueryLegacyBusInformation(IN PIRP Irp,
                                   IN PIO_STACK_LOCATION IoStackLocation,
                                   IN PPCI_PDO_EXTENSION DeviceExtension)
{
    UNIMPLEMENTED;
    while (TRUE);
    return STATUS_NOT_SUPPORTED;
}

NTSTATUS
NTAPI
PciPdoCreate(IN PPCI_FDO_EXTENSION DeviceExtension,
             IN PCI_SLOT_NUMBER Slot,
             OUT PDEVICE_OBJECT *PdoDeviceObject)
{
    WCHAR DeviceName[32];
    UNICODE_STRING DeviceString;
    NTSTATUS Status;
    PDEVICE_OBJECT DeviceObject;
    PPCI_PDO_EXTENSION PdoExtension;
    ULONG SequenceNumber;
    PAGED_CODE();

    /* Pick an atomically unique sequence number for this device */
    SequenceNumber = InterlockedIncrement(&PciPdoSequenceNumber);

    /* Create the standard PCI device name for a PDO */
    swprintf(DeviceName, L"\\Device\\NTPNP_PCI%04d", SequenceNumber);
    RtlInitUnicodeString(&DeviceString, DeviceName);

    /* Create the actual device now */
    Status = IoCreateDevice(DeviceExtension->FunctionalDeviceObject->DriverObject,
                            sizeof(PCI_PDO_EXTENSION),
                            &DeviceString,
                            FILE_DEVICE_BUS_EXTENDER,
                            0,
                            0,
                            &DeviceObject);
    ASSERT(NT_SUCCESS(Status));

    /* Get the extension for it */
    PdoExtension = (PPCI_PDO_EXTENSION)DeviceObject->DeviceExtension;
    DPRINT1("PCI: New PDO (b=0x%x, d=0x%x, f=0x%x) @ %p, ext @ %p\n",
            DeviceExtension->BaseBus,
            Slot.u.bits.DeviceNumber,
            Slot.u.bits.FunctionNumber,
            DeviceObject,
            DeviceObject->DeviceExtension);

    /* Configure the extension */
    PdoExtension->ExtensionType = PciPdoExtensionType;
    PdoExtension->IrpDispatchTable = &PciPdoDispatchTable;
    PdoExtension->PhysicalDeviceObject = DeviceObject;
    PdoExtension->Slot = Slot;
    PdoExtension->PowerState.CurrentSystemState = PowerDeviceD0;
    PdoExtension->PowerState.CurrentDeviceState = PowerDeviceD0;
    PdoExtension->ParentFdoExtension = DeviceExtension;

    /* Initialize the lock for arbiters and other interfaces */
    KeInitializeEvent(&PdoExtension->SecondaryExtLock, SynchronizationEvent, TRUE);

    /* Initialize the state machine */
    PciInitializeState((PPCI_FDO_EXTENSION)PdoExtension);

    /* Add the PDO to the parent's list */
    PdoExtension->Next = NULL;
    PciInsertEntryAtTail((PSINGLE_LIST_ENTRY)&DeviceExtension->ChildPdoList,
                         (PPCI_FDO_EXTENSION)PdoExtension,
                         &DeviceExtension->ChildListLock);

    /* And finally return it to the caller */
    *PdoDeviceObject = DeviceObject;
    return STATUS_SUCCESS;
}

/* EOF */