Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2025-08-05 21:12:59 +00:00
Code Issues Projects Releases Packages Wiki Activity

[WDF] Add Windows Driver Framework files

Browse source 
Takern from Microsoft GitHub repo:
d9c6040fe9

Licensed under MIT
This commit is contained in:
Victor Perevertkin 2020-09-24 23:51:15 +03:00
parent 545df81502
commit 8a978a179f
No known key found for this signature in database
GPG key ID: C750B7222E9C7830
475 changed files with 285099 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

153
sdk/lib/drivers/wdf/shared/inc/private/common/fxdevicepwrreqstatemachine.hpp Normal file
View file

@ -0,0 +1,153 @@
//
// Copyright (C) Microsoft. All rights reserved.
//
#ifndef _FXDEVICEPWRREQUIRESTATEMACHINE_H_
#define _FXDEVICEPWRREQUIRESTATEMACHINE_H_
//
// This is a magical number based on inspection. If the queue overflows,
// it is OK to increase these numbers without fear of either dependencies or
// weird side affects.
//
const UCHAR FxDevicePwrRequirementEventQueueDepth = 8;
enum FxDevicePwrRequirementEvents {
DprEventInvalid = 0x00,
DprEventRegisteredWithPox = 0x01,
DprEventUnregisteredWithPox = 0x02,
DprEventPoxRequiresPower = 0x04,
DprEventPoxDoesNotRequirePower = 0x08,
DprEventDeviceGoingToDx = 0x10,
DprEventDeviceReturnedToD0 = 0x20,
DprEventNull = 0xFF,
};
enum FxDevicePwrRequirementStates {
DprInvalid = 0,
DprUnregistered,
DprDevicePowerRequiredD0,
DprDevicePowerNotRequiredD0,
DprDevicePowerNotRequiredDx,
DprDevicePowerRequiredDx,
DprReportingDevicePowerAvailable,
DprWaitingForDevicePowerRequiredD0,
DprMax
};
//
// Forward declaration
//
class FxDevicePwrRequirementMachine;
class FxPoxInterface;
typedef
_Must_inspect_result_
FxDevicePwrRequirementStates
(*PFN_DEVICE_POWER_REQUIREMENT_STATE_ENTRY_FUNCTION)(
__in FxDevicePwrRequirementMachine* This
);
struct FxDevicePwrRequirementTargetState {
FxDevicePwrRequirementEvents DprEvent;
FxDevicePwrRequirementStates DprState;
#if FX_SUPER_DBG
BOOLEAN EventDebugged;
#endif
};
//
// This type of union is done so that we can
// 1) shrink the array element to the smallest size possible
// 2) keep types within the structure so we can dump it in the debugger
//
union FxDevicePwrRequirementMachineStateHistory {
struct {
FxDevicePwrRequirementStates State1 : 8;
FxDevicePwrRequirementStates State2 : 8;
FxDevicePwrRequirementStates State3 : 8;
FxDevicePwrRequirementStates State4 : 8;
FxDevicePwrRequirementStates State5 : 8;
FxDevicePwrRequirementStates State6 : 8;
FxDevicePwrRequirementStates State7 : 8;
FxDevicePwrRequirementStates State8 : 8;
} S;
UCHAR History[FxDevicePwrRequirementEventQueueDepth];
};
struct FxDevicePwrRequirementStateTable {
PFN_DEVICE_POWER_REQUIREMENT_STATE_ENTRY_FUNCTION StateFunc;
const FxDevicePwrRequirementTargetState* TargetStates;
ULONG TargetStatesCount;
};
class FxDevicePwrRequirementMachine : public FxThreadedEventQueue {
public:
FxDevicePwrRequirementMachine(
__in FxPoxInterface * PoxInterface
);
VOID
ProcessEvent(
__in FxDevicePwrRequirementEvents Event
);
static
VOID
_ProcessEventInner(
__inout FxPkgPnp* PkgPnp,
__inout FxPostProcessInfo* Info,
__in PVOID WorkerContext
);
private:
VOID
ProcessEventInner(
__inout FxPostProcessInfo* Info
);
static
FxDevicePwrRequirementStates
PowerNotRequiredD0(
__in FxDevicePwrRequirementMachine* This
);
static
FxDevicePwrRequirementStates
PowerRequiredDx(
__in FxDevicePwrRequirementMachine* This
);
static
FxDevicePwrRequirementStates
ReportingDevicePowerAvailable(
__in FxDevicePwrRequirementMachine* This
);
protected:
FxPoxInterface* m_PoxInterface;
// uses FxDevicePwrRequirementStates values
BYTE m_CurrentState;
// three extra padded bytes are put in here by the compiler
FxDevicePwrRequirementEvents m_Queue[FxDevicePwrRequirementEventQueueDepth];
FxDevicePwrRequirementMachineStateHistory m_States;
static const FxDevicePwrRequirementStateTable m_StateTable[];
static const FxDevicePwrRequirementTargetState m_UnregisteredStates[];
static const FxDevicePwrRequirementTargetState m_DevicePowerRequiredD0States[];
static const FxDevicePwrRequirementTargetState m_DevicePowerNotRequiredD0States[];
static const FxDevicePwrRequirementTargetState m_DevicePowerNotRequiredDxStates[];
static const FxDevicePwrRequirementTargetState m_DevicePowerRequiredDxStates[];
static const FxDevicePwrRequirementTargetState m_WaitingForDevicePowerRequiredD0States[];
};
#endif // _FXDEVICEPWRREQUIRESTATEMACHINE_H_