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227 lines
4.9 KiB
227 lines
4.9 KiB
/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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selSusp.h
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Abstract:
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Environment:
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Kernel mode
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Notes:
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Copyright (c) 2000 Microsoft Corporation.
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All Rights Reserved.
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--*/
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#include <initguid.h>
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#include <wdm.h>
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#include <wmilib.h>
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#include <wmistr.h>
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#include "usbdi.h"
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#include "usbdlib.h"
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#ifndef _SUSPEND_LOCAL_H
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#define _SUSPEND_LOCAL_H
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#define SSTAG (ULONG) 'SleS'
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#undef ExAllocatePool
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#define ExAllocatePool(type, size) \
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ExAllocatePoolWithTag(type, size, SSTAG);
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#if DBG
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#define SSDbgPrint(level, _x_) \
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if((level) <= DebugLevel) { \
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DbgPrint _x_; \
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}
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#else
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#define SSDbgPrint(level, _x_)
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#endif
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typedef struct _GLOBALS {
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UNICODE_STRING SSRegistryPath;
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} GLOBALS;
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#define IDLE_INTERVAL 5000
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typedef enum _DEVSTATE {
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NotStarted, // not started
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Stopped, // device stopped
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Working, // started and working
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PendingStop, // stop pending
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PendingRemove, // remove pending
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SurpriseRemoved, // removed by surprise
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Removed // removed
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} DEVSTATE;
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typedef enum _QUEUE_STATE {
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HoldRequests, // device is not started yet
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AllowRequests, // device is ready to process
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FailRequests // fail both existing and queued up requests
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} QUEUE_STATE;
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typedef enum _WDM_VERSION {
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WinXpOrBetter,
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Win2kOrBetter,
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WinMeOrBetter,
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Win98OrBetter
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} WDM_VERSION;
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#define INITIALIZE_PNP_STATE(_Data_) \
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(_Data_)->DeviceState = NotStarted;\
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(_Data_)->PrevDevState = NotStarted;
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#define SET_NEW_PNP_STATE(_Data_, _state_) \
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(_Data_)->PrevDevState = (_Data_)->DeviceState;\
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(_Data_)->DeviceState = (_state_);
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#define RESTORE_PREVIOUS_PNP_STATE(_Data_) \
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(_Data_)->DeviceState = (_Data_)->PrevDevState;
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//
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// registry path used for parameters
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// global to all instances of the driver
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//
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#define SELSUSP_REGISTRY_PARAMETERS_PATH \
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L"\\REGISTRY\\Machine\\System\\CurrentControlSet\\SERVICES\\SELSUSP\\Parameters"
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//
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// A structure representing the instance information associated with
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// this particular device.
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//
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typedef struct _DEVICE_EXTENSION {
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// Functional Device Object
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PDEVICE_OBJECT FunctionalDeviceObject;
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// Device object we call when submitting Urbs
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PDEVICE_OBJECT TopOfStackDeviceObject;
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// The bus driver object
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PDEVICE_OBJECT PhysicalDeviceObject;
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// Name buffer for our named Functional device object link
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// The name is generated based on the driver's class GUID
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UNICODE_STRING InterfaceName;
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//Bus drivers set the appropriate values in this structure in response
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//to an IRP_MN_QUERY_CAPABILITIES IRP. Function and filter drivers might
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//alter the capabilities set by the bus driver.
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DEVICE_CAPABILITIES DeviceCapabilities;
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// current state of device
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DEVSTATE DeviceState;
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// state prior to removal query
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DEVSTATE PrevDevState;
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// obtain and hold this lock while changing the device state,
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// the queue state and while processing the queue.
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KSPIN_LOCK DevStateLock;
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// current system power state
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SYSTEM_POWER_STATE SysPower;
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// current device power state
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DEVICE_POWER_STATE DevPower;
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// Pending I/O queue state
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QUEUE_STATE QueueState;
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// Pending I/O queue
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LIST_ENTRY NewRequestsQueue;
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// I/O Queue Lock
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KSPIN_LOCK QueueLock;
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KEVENT RemoveEvent;
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KEVENT StopEvent;
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ULONG OutStandingIO;
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KSPIN_LOCK IOCountLock;
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// selective suspend variables
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LONG SSEnable;
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LONG SSRegistryEnable;
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PUSB_IDLE_CALLBACK_INFO IdleCallbackInfo;
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PIRP PendingIdleIrp;
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LONG IdleReqPend;
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LONG FreeIdleIrpCount;
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KSPIN_LOCK IdleReqStateLock;
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KEVENT NoIdleReqPendEvent;
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// default power state to power down to on self-susped
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ULONG PowerDownLevel;
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// remote wakeup variables
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PIRP WaitWakeIrp;
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LONG FlagWWCancel;
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LONG FlagWWOutstanding;
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LONG WaitWakeEnable;
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// open handle count
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LONG OpenHandleCount;
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// selective suspend model uses timers, dpcs and work item.
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KTIMER Timer;
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KDPC DeferredProcCall;
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// This event is cleared when a DPC/Work Item is queued.
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// and signaled when the work-item completes.
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// This is essential to prevent the driver from unloading
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// while we have DPC or work-item queued up.
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KEVENT NoDpcWorkItemPendingEvent;
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// WMI information
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WMILIB_CONTEXT WmiLibInfo;
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// WDM version
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WDM_VERSION WdmVersion;
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} DEVICE_EXTENSION, *PDEVICE_EXTENSION;
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typedef struct _IRP_COMPLETION_CONTEXT {
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PDEVICE_EXTENSION DeviceExtension;
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PKEVENT Event;
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} IRP_COMPLETION_CONTEXT, *PIRP_COMPLETION_CONTEXT;
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extern GLOBALS Globals;
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extern ULONG DebugLevel;
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#endif
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