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Diffstat (limited to 'src/VBox/Additions/common/VBoxGuest/VBoxGuestInternal.h')
| -rw-r--r-- | src/VBox/Additions/common/VBoxGuest/VBoxGuestInternal.h | 415 |
1 files changed, 415 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/VBoxGuest/VBoxGuestInternal.h b/src/VBox/Additions/common/VBoxGuest/VBoxGuestInternal.h new file mode 100644 index 00000000..9c2fc1d8 --- /dev/null +++ b/src/VBox/Additions/common/VBoxGuest/VBoxGuestInternal.h @@ -0,0 +1,415 @@ +/* $Id: VBoxGuestInternal.h $ */ +/** @file + * VBoxGuest - Guest Additions Driver, Internal Header. + */ + +/* + * Copyright (C) 2010-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + +#ifndef GA_INCLUDED_SRC_common_VBoxGuest_VBoxGuestInternal_h +#define GA_INCLUDED_SRC_common_VBoxGuest_VBoxGuestInternal_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/types.h> +#include <iprt/list.h> +#include <iprt/semaphore.h> +#include <iprt/spinlock.h> +#include <iprt/timer.h> +#include <VBox/VMMDev.h> +#include <VBox/VBoxGuest.h> +#include <VBox/VBoxGuestLib.h> + +/** @def VBOXGUEST_USE_DEFERRED_WAKE_UP + * Defer wake-up of waiting thread when defined. */ +#if defined(RT_OS_SOLARIS) || defined(RT_OS_WINDOWS) || defined(DOXYGEN_RUNNING) +# define VBOXGUEST_USE_DEFERRED_WAKE_UP +#endif + +/** @def VBOXGUEST_MOUSE_NOTIFY_CAN_PREEMPT + * The mouse notification callback can cause preemption and must not be invoked + * while holding a high-level spinlock. + */ +#if defined(RT_OS_SOLARIS) || defined(RT_OS_WINDOWS) || defined(DOXYGEN_RUNNING) +# define VBOXGUEST_MOUSE_NOTIFY_CAN_PREEMPT +#endif + +/** Pointer to the VBoxGuest per session data. */ +typedef struct VBOXGUESTSESSION *PVBOXGUESTSESSION; + +/** Pointer to a wait-for-event entry. */ +typedef struct VBOXGUESTWAIT *PVBOXGUESTWAIT; + +/** + * VBox guest wait for event entry. + * + * Each waiting thread allocates one of these items and adds + * it to the wait list before going to sleep on the event sem. + */ +typedef struct VBOXGUESTWAIT +{ + /** The list node. */ + RTLISTNODE ListNode; + /** The events we are waiting on. */ + uint32_t fReqEvents; + /** The events we received. */ + uint32_t volatile fResEvents; +#ifdef VBOXGUEST_USE_DEFERRED_WAKE_UP + /** Set by VGDrvCommonWaitDoWakeUps before leaving the spinlock to call + * RTSemEventMultiSignal. */ + bool volatile fPendingWakeUp; + /** Set by the requestor thread if it got the spinlock before the + * signaller. Deals with the race in VGDrvCommonWaitDoWakeUps. */ + bool volatile fFreeMe; +#endif + /** The event semaphore. */ + RTSEMEVENTMULTI Event; + /** The session that's waiting. */ + PVBOXGUESTSESSION pSession; +#ifdef VBOX_WITH_HGCM + /** The HGCM request we're waiting for to complete. */ + VMMDevHGCMRequestHeader volatile *pHGCMReq; +#endif +} VBOXGUESTWAIT; + + +/** + * VBox guest memory balloon. + */ +typedef struct VBOXGUESTMEMBALLOON +{ + /** Mutex protecting the members below from concurrent access. */ + RTSEMFASTMUTEX hMtx; + /** The current number of chunks in the balloon. */ + uint32_t cChunks; + /** The maximum number of chunks in the balloon (typically the amount of guest + * memory / chunksize). */ + uint32_t cMaxChunks; + /** This is true if we are using RTR0MemObjAllocPhysNC() / RTR0MemObjGetPagePhysAddr() + * and false otherwise. */ + bool fUseKernelAPI; + /** The current owner of the balloon. + * This is automatically assigned to the first session using the ballooning + * API and first released when the session closes. */ + PVBOXGUESTSESSION pOwner; + /** The pointer to the array of memory objects holding the chunks of the + * balloon. This array is cMaxChunks in size when present. */ + PRTR0MEMOBJ paMemObj; +} VBOXGUESTMEMBALLOON; +/** Pointer to a memory balloon. */ +typedef VBOXGUESTMEMBALLOON *PVBOXGUESTMEMBALLOON; + + +/** + * Per bit usage tracker for a uint32_t mask. + * + * Used for optimal handling of guest properties, mouse status and event filter. + */ +typedef struct VBOXGUESTBITUSAGETRACER +{ + /** Per bit usage counters. */ + uint32_t acPerBitUsage[32]; + /** The current mask according to acPerBitUsage. */ + uint32_t fMask; +} VBOXGUESTBITUSAGETRACER; +/** Pointer to a per bit usage tracker. */ +typedef VBOXGUESTBITUSAGETRACER *PVBOXGUESTBITUSAGETRACER; +/** Pointer to a const per bit usage tracker. */ +typedef VBOXGUESTBITUSAGETRACER const *PCVBOXGUESTBITUSAGETRACER; + + +/** + * VBox guest device (data) extension. + */ +typedef struct VBOXGUESTDEVEXT +{ + /** VBOXGUESTDEVEXT_INIT_STATE_XXX. */ + uint32_t uInitState; + /** The base of the adapter I/O ports. */ + RTIOPORT IOPortBase; + /** Pointer to the mapping of the VMMDev adapter memory. */ + VMMDevMemory volatile *pVMMDevMemory; + /** The memory object reserving space for the guest mappings. */ + RTR0MEMOBJ hGuestMappings; + /** Spinlock protecting the signaling and resetting of the wait-for-event + * semaphores as well as the event acking in the ISR. */ + RTSPINLOCK EventSpinlock; + /** Host feature flags (VMMDEV_HVF_XXX). */ + uint32_t fHostFeatures; + /** Preallocated VMMDevEvents for the IRQ handler. */ + VMMDevEvents *pIrqAckEvents; + /** The physical address of pIrqAckEvents. */ + RTCCPHYS PhysIrqAckEvents; + /** Wait-for-event list for threads waiting for multiple events + * (VBOXGUESTWAIT). */ + RTLISTANCHOR WaitList; +#ifdef VBOX_WITH_HGCM + /** Wait-for-event list for threads waiting on HGCM async completion + * (VBOXGUESTWAIT). + * + * The entire list is evaluated upon the arrival of an HGCM event, unlike + * the other lists which are only evaluated till the first thread has + * been woken up. */ + RTLISTANCHOR HGCMWaitList; +#endif +#ifdef VBOXGUEST_USE_DEFERRED_WAKE_UP + /** List of wait-for-event entries that needs waking up + * (VBOXGUESTWAIT). */ + RTLISTANCHOR WakeUpList; +#endif + /** List of wait-for-event entries that has been woken up + * (VBOXGUESTWAIT). */ + RTLISTANCHOR WokenUpList; + /** List of free wait-for-event entries (VBOXGUESTWAIT). */ + RTLISTANCHOR FreeList; + /** Mask of pending events. */ + uint32_t volatile f32PendingEvents; + /** Current VMMDEV_EVENT_MOUSE_POSITION_CHANGED sequence number. + * Used to implement polling. */ + uint32_t volatile u32MousePosChangedSeq; + + /** Spinlock various items in the VBOXGUESTSESSION. */ + RTSPINLOCK SessionSpinlock; + /** List of guest sessions (VBOXGUESTSESSION). We currently traverse this + * but do not search it, so a list data type should be fine. Use under the + * #SessionSpinlock lock. */ + RTLISTANCHOR SessionList; + /** Number of session. */ + uint32_t cSessions; + /** Flag indicating whether logging to the release log + * is enabled. */ + bool fLoggingEnabled; + /** Memory balloon information for RTR0MemObjAllocPhysNC(). */ + VBOXGUESTMEMBALLOON MemBalloon; + /** Mouse notification callback function. */ + PFNVBOXGUESTMOUSENOTIFY pfnMouseNotifyCallback; + /** The callback argument for the mouse ntofication callback. */ + void *pvMouseNotifyCallbackArg; + + /** @name Host Event Filtering + * @{ */ + /** Events we won't permit anyone to filter out. */ + uint32_t fFixedEvents; + /** Usage counters for the host events. (Fixed events are not included.) */ + VBOXGUESTBITUSAGETRACER EventFilterTracker; + /** The event filter last reported to the host (UINT32_MAX on failure). */ + uint32_t fEventFilterHost; + /** @} */ + + /** @name Mouse Status + * @{ */ + /** Usage counters for the mouse statuses (VMMDEV_MOUSE_XXX). */ + VBOXGUESTBITUSAGETRACER MouseStatusTracker; + /** The mouse status last reported to the host (UINT32_MAX on failure). */ + uint32_t fMouseStatusHost; + /** @} */ + + /** @name Guest Capabilities + * @{ */ + /** Guest capabilities which have been set to "acquire" mode. This means + * that only one session can use them at a time, and that they will be + * automatically cleaned up if that session exits without doing so. + * + * Protected by VBOXGUESTDEVEXT::SessionSpinlock, but is unfortunately read + * without holding the lock in a couple of places. */ + uint32_t volatile fAcquireModeGuestCaps; + /** Guest capabilities which have been set to "set" mode. This just means + * that they have been blocked from ever being set to "acquire" mode. */ + uint32_t fSetModeGuestCaps; + /** Mask of all capabilities which are currently acquired by some session + * and as such reported to the host. */ + uint32_t fAcquiredGuestCaps; + /** Usage counters for guest capabilities in "set" mode. Indexed by + * capability bit number, one count per session using a capability. */ + VBOXGUESTBITUSAGETRACER SetGuestCapsTracker; + /** The guest capabilities last reported to the host (UINT32_MAX on failure). */ + uint32_t fGuestCapsHost; + /** @} */ + + /** Heartbeat timer which fires with interval + * cNsHearbeatInterval and its handler sends + * VMMDevReq_GuestHeartbeat to VMMDev. */ + PRTTIMER pHeartbeatTimer; + /** Heartbeat timer interval in nanoseconds. */ + uint64_t cNsHeartbeatInterval; + /** Preallocated VMMDevReq_GuestHeartbeat request. */ + VMMDevRequestHeader *pReqGuestHeartbeat; +} VBOXGUESTDEVEXT; +/** Pointer to the VBoxGuest driver data. */ +typedef VBOXGUESTDEVEXT *PVBOXGUESTDEVEXT; + +/** @name VBOXGUESTDEVEXT_INIT_STATE_XXX - magic values for validating init + * state of the device extension structur. + * @{ */ +#define VBOXGUESTDEVEXT_INIT_STATE_FUNDAMENT UINT32_C(0x0badcafe) +#define VBOXGUESTDEVEXT_INIT_STATE_RESOURCES UINT32_C(0xcafebabe) +#define VBOXGUESTDEVEXT_INIT_STATE_DELETED UINT32_C(0xdeadd0d0) +/** @} */ + +/** + * The VBoxGuest per session data. + */ +typedef struct VBOXGUESTSESSION +{ + /** The list node. */ + RTLISTNODE ListNode; +#if defined(RT_OS_DARWIN) || defined(RT_OS_FREEBSD) || defined(RT_OS_OS2) || defined(RT_OS_SOLARIS) + /** Pointer to the next session with the same hash. */ + PVBOXGUESTSESSION pNextHash; +#endif +#if defined(RT_OS_OS2) + /** The system file number of this session. */ + uint16_t sfn; + uint16_t Alignment; /**< Alignment */ +#endif + /** The requestor information to pass to the host for this session. + * @sa VMMDevRequestHeader::fRequestor */ + uint32_t fRequestor; + /** The process (id) of the session. + * This is NIL if it's a kernel session. */ + RTPROCESS Process; + /** Which process this session is associated with. + * This is NIL if it's a kernel session. */ + RTR0PROCESS R0Process; + /** Pointer to the device extension. */ + PVBOXGUESTDEVEXT pDevExt; + +#ifdef VBOX_WITH_HGCM + /** Array containing HGCM client IDs associated with this session. + * This will be automatically disconnected when the session is closed. */ + uint32_t volatile aHGCMClientIds[64]; +#endif + /** The last consumed VMMDEV_EVENT_MOUSE_POSITION_CHANGED sequence number. + * Used to implement polling. */ + uint32_t volatile u32MousePosChangedSeq; + /** Host events requested by the session. + * An event type requested in any guest session will be added to the host + * filter. Protected by VBOXGUESTDEVEXT::SessionSpinlock. */ + uint32_t fEventFilter; + /** Guest capabilities held in "acquired" by this session. + * Protected by VBOXGUESTDEVEXT::SessionSpinlock, but is unfortunately read + * without holding the lock in a couple of places. */ + uint32_t volatile fAcquiredGuestCaps; + /** Guest capabilities in "set" mode for this session. + * These accumulated for sessions via VBOXGUESTDEVEXT::acGuestCapsSet and + * reported to the host. Protected by VBOXGUESTDEVEXT::SessionSpinlock. */ + uint32_t fCapabilities; + /** Mouse features supported. A feature enabled in any guest session will + * be enabled for the host. + * @note We invert the VMMDEV_MOUSE_GUEST_NEEDS_HOST_CURSOR feature in this + * bitmap. The logic of this is that the real feature is when the host + * cursor is not needed, and we tell the host it is not needed if any + * session explicitly fails to assert it. Storing it inverted simplifies + * the checks. + * Use under the VBOXGUESTDEVEXT#SessionSpinlock lock. */ + uint32_t fMouseStatus; +#ifdef RT_OS_DARWIN + /** Pointer to the associated org_virtualbox_VBoxGuestClient object. */ + void *pvVBoxGuestClient; + /** Whether this session has been opened or not. */ + bool fOpened; +#endif + /** Whether a CANCEL_ALL_WAITEVENTS is pending. This happens when + * CANCEL_ALL_WAITEVENTS is called, but no call to WAITEVENT is in process + * in the current session. In that case the next call will be interrupted + * at once. */ + bool volatile fPendingCancelWaitEvents; + /** Does this session belong to a root process or a user one? */ + bool fUserSession; +} VBOXGUESTSESSION; + +RT_C_DECLS_BEGIN + +int VGDrvCommonInitDevExt(PVBOXGUESTDEVEXT pDevExt, uint16_t IOPortBase, void *pvMMIOBase, uint32_t cbMMIO, + VBOXOSTYPE enmOSType, uint32_t fEvents); +void VGDrvCommonDeleteDevExt(PVBOXGUESTDEVEXT pDevExt); + +int VGDrvCommonInitLoggers(void); +void VGDrvCommonDestroyLoggers(void); +int VGDrvCommonInitDevExtFundament(PVBOXGUESTDEVEXT pDevExt); +void VGDrvCommonDeleteDevExtFundament(PVBOXGUESTDEVEXT pDevExt); +int VGDrvCommonInitDevExtResources(PVBOXGUESTDEVEXT pDevExt, uint16_t IOPortBase, + void *pvMMIOBase, uint32_t cbMMIO, VBOXOSTYPE enmOSType, uint32_t fFixedEvents); +void VGDrvCommonDeleteDevExtResources(PVBOXGUESTDEVEXT pDevExt); +int VGDrvCommonReinitDevExtAfterHibernation(PVBOXGUESTDEVEXT pDevExt, VBOXOSTYPE enmOSType); + +bool VBDrvCommonIsOptionValueTrue(const char *pszValue); +void VGDrvCommonProcessOption(PVBOXGUESTDEVEXT pDevExt, const char *pszName, const char *pszValue); +void VGDrvCommonProcessOptionsFromHost(PVBOXGUESTDEVEXT pDevExt); +bool VGDrvCommonIsOurIRQ(PVBOXGUESTDEVEXT pDevExt); +bool VGDrvCommonISR(PVBOXGUESTDEVEXT pDevExt); + +#ifdef VBOXGUEST_USE_DEFERRED_WAKE_UP +void VGDrvCommonWaitDoWakeUps(PVBOXGUESTDEVEXT pDevExt); +#endif + +int VGDrvCommonCreateUserSession(PVBOXGUESTDEVEXT pDevExt, uint32_t fRequestor, PVBOXGUESTSESSION *ppSession); +int VGDrvCommonCreateKernelSession(PVBOXGUESTDEVEXT pDevExt, PVBOXGUESTSESSION *ppSession); +void VGDrvCommonCloseSession(PVBOXGUESTDEVEXT pDevExt, PVBOXGUESTSESSION pSession); + +int VGDrvCommonIoCtlFast(uintptr_t iFunction, PVBOXGUESTDEVEXT pDevExt, PVBOXGUESTSESSION pSession); +int VGDrvCommonIoCtl(uintptr_t iFunction, PVBOXGUESTDEVEXT pDevExt, PVBOXGUESTSESSION pSession, + PVBGLREQHDR pReqHdr, size_t cbReq); + +/** + * ISR callback for notifying threads polling for mouse events. + * + * This is called at the end of the ISR, after leaving the event spinlock, if + * VMMDEV_EVENT_MOUSE_POSITION_CHANGED was raised by the host. + * + * @param pDevExt The device extension. + */ +void VGDrvNativeISRMousePollEvent(PVBOXGUESTDEVEXT pDevExt); + +/** + * Hook for handling OS specfic options from the host. + * + * @returns true if handled, false if not. + * @param pDevExt The device extension. + * @param pszName The option name. + * @param pszValue The option value. + */ +bool VGDrvNativeProcessOption(PVBOXGUESTDEVEXT pDevExt, const char *pszName, const char *pszValue); + + +#ifdef VBOX_WITH_DPC_LATENCY_CHECKER +int VGDrvNtIOCtl_DpcLatencyChecker(void); +#endif + +#ifdef VBOXGUEST_MOUSE_NOTIFY_CAN_PREEMPT +int VGDrvNativeSetMouseNotifyCallback(PVBOXGUESTDEVEXT pDevExt, PVBGLIOCSETMOUSENOTIFYCALLBACK pNotify); +#endif + +RT_C_DECLS_END + +#endif /* !GA_INCLUDED_SRC_common_VBoxGuest_VBoxGuestInternal_h */ + |