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244 lines
4.8 KiB
244 lines
4.8 KiB
/*++
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Copyright (c) Microsoft Corporation. All rights reserved.
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Module Name:
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pnpdata.c
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Abstract:
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This module contains the plug-and-play data
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Author:
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Shie-Lin Tzong (shielint) 30-Jan-1995
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Environment:
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Kernel mode
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Revision History:
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--*/
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#include "pnpmgrp.h"
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#pragma hdrstop
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#include <initguid.h>
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//
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// INIT data segment
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//
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#ifdef ALLOC_DATA_PRAGMA
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#pragma data_seg("INIT")
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#endif
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PVOID IopPnpScratchBuffer1 = NULL;
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PVOID IopPnpScratchBuffer2 = NULL;
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PCM_RESOURCE_LIST IopInitHalResources;
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PDEVICE_NODE IopInitHalDeviceNode;
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PIOP_RESERVED_RESOURCES_RECORD IopInitReservedResourceList;
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//
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// Regular data segment
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//
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#ifdef ALLOC_DATA_PRAGMA
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#pragma data_seg()
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#endif
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//
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// IopRootDeviceNode - the head of the PnP manager's device node tree.
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//
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PDEVICE_NODE IopRootDeviceNode;
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//
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// IoPnPDriverObject - the madeup driver object for pnp manager
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//
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PDRIVER_OBJECT IoPnpDriverObject;
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//
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// IopPnPSpinLock - spinlock for Pnp code.
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//
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KSPIN_LOCK IopPnPSpinLock;
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//
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// IopDeviceTreeLock - performs synchronization around the whole device node tree.
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//
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ERESOURCE IopDeviceTreeLock;
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//
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// IopSurpriseRemoveListLock - synchronizes access to the surprise remove list.
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//
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ERESOURCE IopSurpriseRemoveListLock;
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//
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// PiEngineLock - Synchronizes the start/enum and remove engines.
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//
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ERESOURCE PiEngineLock;
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//
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// PiEventQueueEmpty - Manual reset event which is set when the queue is empty
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//
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KEVENT PiEventQueueEmpty;
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//
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// PiEnumerationLock - to synchronize boot phase device enumeration
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//
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KEVENT PiEnumerationLock;
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//
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// IopNumberDeviceNodes - Number of outstanding device nodes in the system.
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//
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ULONG IopNumberDeviceNodes;
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//
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// IopPnpEnumerationRequestList - a link list of device enumeration requests to worker thread.
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//
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LIST_ENTRY IopPnpEnumerationRequestList;
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//
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// PnPInitComplete - A flag to indicate if PnP initialization is completed.
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//
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BOOLEAN PnPInitialized;
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//
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// PnPBootDriverInitialied
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//
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BOOLEAN PnPBootDriversInitialized;
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//
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// PnPBootDriverLoaded
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//
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BOOLEAN PnPBootDriversLoaded;
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//
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// IopBootConfigsReserved - Indicates whether we have reserved BOOT configs or not.
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//
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BOOLEAN IopBootConfigsReserved;
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//
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// Variable to hold boot allocation routine.
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//
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PIO_ALLOCATE_BOOT_RESOURCES_ROUTINE IopAllocateBootResourcesRoutine;
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//
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// Device node tree sequence. Is bumped every time the tree is modified or a warm
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// eject is queued.
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//
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ULONG IoDeviceNodeTreeSequence;
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//
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// PnpDefaultInterfaceTYpe - Use this if the interface type of resource list is unknown.
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//
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INTERFACE_TYPE PnpDefaultInterfaceType;
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//
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// PnpStartAsynOk - control how start irp should be handled. Synchronously or Asynchronously?
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//
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BOOLEAN PnpAsyncOk;
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//
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// IopMaxDeviceNodeLevel - Level number of the DeviceNode deepest in the tree
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//
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ULONG IopMaxDeviceNodeLevel;
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//
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// IopPendingEjects - List of pending eject requests
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//
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LIST_ENTRY IopPendingEjects;
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//
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// IopPendingSurpriseRemovals - List of pending surprise removal requests
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//
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LIST_ENTRY IopPendingSurpriseRemovals;
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//
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// Warm eject lock - only one warm eject is allowed to occur at a time
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//
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KEVENT IopWarmEjectLock;
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//
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// This field contains a devobj if a warm eject is in progress.
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//
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PDEVICE_OBJECT IopWarmEjectPdo;
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//
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// Arbiter data
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//
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ARBITER_INSTANCE IopRootPortArbiter;
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ARBITER_INSTANCE IopRootMemArbiter;
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ARBITER_INSTANCE IopRootDmaArbiter;
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ARBITER_INSTANCE IopRootIrqArbiter;
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ARBITER_INSTANCE IopRootBusNumberArbiter;
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//
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// The following resource is used to control access to device-related, Plug and Play-specific
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// portions of the registry. These portions are:
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//
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// HKLM\System\Enum
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// HKLM\System\CurrentControlSet\Hardware Profiles
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// HKLM\System\CurrentControlSet\Services\<service>\Enum
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//
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// It allows exclusive access for writing, as well as shared access for reading.
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// The resource is initialized by the PnP manager initialization code during phase 0
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// initialization.
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//
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ERESOURCE PpRegistryDeviceResource;
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//
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// Table for Legacy Bus information
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//
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LIST_ENTRY IopLegacyBusInformationTable[MaximumInterfaceType];
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//
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// Set to TRUE in the shutdown process. This prevents us from starting any
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// PNP operations once there is no longer a reasonable expectation they will
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// succeed.
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//
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BOOLEAN PpPnpShuttingDown;
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//
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// The following semaphore is used by the IO system when it reports resource
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// usage to the configuration registry on behalf of a driver. This semaphore
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// is initialized by the I/O system initialization code when the system is
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// started.
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//
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KSEMAPHORE PpRegistrySemaphore;
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//DEFINE_GUID(REGSTR_VALUE_LEGACY_DRIVER_CLASS_GUID, 0x8ECC055D, 0x047F, 0x11D1, 0xA5, 0x37, 0x00, 0x00, 0xF8, 0x75, 0x3E, 0xD1);
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SYSTEM_HIVE_LIMITS PpSystemHiveLimits = {0};
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BOOLEAN PpSystemHiveTooLarge = FALSE;
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//
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// This is really gross.
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// HACK for MATROX G100 because it was too late to make this change for XP.
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//
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BOOLEAN PpCallerInitializesRequestTable = FALSE;
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