Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 789 insertions, 0 deletions

diff --git a/src/VBox/Additions/common/VBoxGuest/VBoxGuest-freebsd.c b/src/VBox/Additions/common/VBoxGuest/VBoxGuest-freebsd.c
new file mode 100644
index 00000000..02b16566
--- /dev/null
+++ b/src/VBox/Additions/common/VBoxGuest/VBoxGuest-freebsd.c
@@ -0,0 +1,789 @@
+/* $Id: VBoxGuest-freebsd.c $ */
+/** @file
+ * VirtualBox Guest Additions Driver for FreeBSD.
+ */
+
+/*
+ * Copyright (C) 2007-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE 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.
+ */
+
+/** @todo r=bird: This must merge with SUPDrv-freebsd.c before long. The two
+ * source files should only differ on prefixes and the extra bits wrt to the
+ * pci device. I.e. it should be diffable so that fixes to one can easily be
+ * applied to the other. */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <sys/param.h>
+#undef PVM
+#include <sys/types.h>
+#include <sys/module.h>
+#include <sys/systm.h>
+#include <sys/errno.h>
+#include <sys/kernel.h>
+#include <sys/fcntl.h>
+#include <sys/conf.h>
+#include <sys/uio.h>
+#include <sys/bus.h>
+#include <sys/poll.h>
+#include <sys/selinfo.h>
+#include <sys/queue.h>
+#include <sys/lock.h>
+#include <sys/lockmgr.h>
+#include <sys/malloc.h>
+#include <sys/file.h>
+#include <sys/rman.h>
+#include <machine/bus.h>
+#include <machine/resource.h>
+#include <dev/pci/pcivar.h>
+#include <dev/pci/pcireg.h>
+
+#include "VBoxGuestInternal.h"
+#include <VBox/version.h>
+#include <VBox/log.h>
+#include <iprt/assert.h>
+#include <iprt/initterm.h>
+#include <iprt/process.h>
+#include <iprt/string.h>
+#include <iprt/mem.h>
+#include <iprt/asm.h>
+
+
+/*********************************************************************************************************************************
+*   Defined Constants And Macros                                                                                                 *
+*********************************************************************************************************************************/
+/** The module name. */
+#define DEVICE_NAME  "vboxguest"
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+struct VBoxGuestDeviceState
+{
+    /** Resource ID of the I/O port */
+    int                iIOPortResId;
+    /** Pointer to the I/O port resource. */
+    struct resource   *pIOPortRes;
+    /** Start address of the IO Port. */
+    uint16_t           uIOPortBase;
+    /** Resource ID of the MMIO area */
+    int                iVMMDevMemResId;
+    /** Pointer to the MMIO resource. */
+    struct resource   *pVMMDevMemRes;
+    /** Handle of the MMIO resource. */
+    bus_space_handle_t VMMDevMemHandle;
+    /** Size of the memory area. */
+    bus_size_t         VMMDevMemSize;
+    /** Mapping of the register space */
+    void              *pMMIOBase;
+    /** IRQ number */
+    int                iIrqResId;
+    /** IRQ resource handle. */
+    struct resource   *pIrqRes;
+    /** Pointer to the IRQ handler. */
+    void              *pfnIrqHandler;
+    /** VMMDev version */
+    uint32_t           u32Version;
+};
+
+
+/*********************************************************************************************************************************
+*   Internal Functions                                                                                                           *
+*********************************************************************************************************************************/
+/*
+ * Character device file handlers.
+ */
+static d_fdopen_t vgdrvFreeBSDOpen;
+static d_close_t  vgdrvFreeBSDClose;
+static d_ioctl_t  vgdrvFreeBSDIOCtl;
+static int        vgdrvFreeBSDIOCtlSlow(PVBOXGUESTSESSION pSession, u_long ulCmd, caddr_t pvData, struct thread *pTd);
+static d_write_t  vgdrvFreeBSDWrite;
+static d_read_t   vgdrvFreeBSDRead;
+static d_poll_t   vgdrvFreeBSDPoll;
+
+/*
+ * IRQ related functions.
+ */
+static void vgdrvFreeBSDRemoveIRQ(device_t pDevice, void *pvState);
+static int  vgdrvFreeBSDAddIRQ(device_t pDevice, void *pvState);
+static int  vgdrvFreeBSDISR(void *pvState);
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+static MALLOC_DEFINE(M_VBOXGUEST, "vboxguest", "VirtualBox Guest Device Driver");
+
+#ifndef D_NEEDMINOR
+# define D_NEEDMINOR 0
+#endif
+
+/*
+ * The /dev/vboxguest character device entry points.
+ */
+static struct cdevsw    g_vgdrvFreeBSDChrDevSW =
+{
+    .d_version =        D_VERSION,
+    .d_flags =          D_TRACKCLOSE | D_NEEDMINOR,
+    .d_fdopen =         vgdrvFreeBSDOpen,
+    .d_close =          vgdrvFreeBSDClose,
+    .d_ioctl =          vgdrvFreeBSDIOCtl,
+    .d_read =           vgdrvFreeBSDRead,
+    .d_write =          vgdrvFreeBSDWrite,
+    .d_poll =           vgdrvFreeBSDPoll,
+    .d_name =           "vboxguest"
+};
+
+/** Device extention & session data association structure. */
+static VBOXGUESTDEVEXT      g_DevExt;
+
+/** List of cloned device. Managed by the kernel. */
+static struct clonedevs    *g_pvgdrvFreeBSDClones;
+/** The dev_clone event handler tag. */
+static eventhandler_tag     g_vgdrvFreeBSDEHTag;
+/** Reference counter */
+static volatile uint32_t    cUsers;
+/** selinfo structure used for polling. */
+static struct selinfo       g_SelInfo;
+
+/**
+ * DEVFS event handler.
+ */
+static void vgdrvFreeBSDClone(void *pvArg, struct ucred *pCred, char *pszName, int cchName, struct cdev **ppDev)
+{
+    int iUnit;
+    int rc;
+
+    Log(("vgdrvFreeBSDClone: pszName=%s ppDev=%p\n", pszName, ppDev));
+
+    /*
+     * One device node per user, si_drv1 points to the session.
+     * /dev/vboxguest<N> where N = {0...255}.
+     */
+    if (!ppDev)
+        return;
+    if (strcmp(pszName, "vboxguest") == 0)
+        iUnit =  -1;
+    else if (dev_stdclone(pszName, NULL, "vboxguest", &iUnit) != 1)
+        return;
+    if (iUnit >= 256)
+    {
+        Log(("vgdrvFreeBSDClone: iUnit=%d >= 256 - rejected\n", iUnit));
+        return;
+    }
+
+    Log(("vgdrvFreeBSDClone: pszName=%s iUnit=%d\n", pszName, iUnit));
+
+    rc = clone_create(&g_pvgdrvFreeBSDClones, &g_vgdrvFreeBSDChrDevSW, &iUnit, ppDev, 0);
+    Log(("vgdrvFreeBSDClone: clone_create -> %d; iUnit=%d\n", rc, iUnit));
+    if (rc)
+    {
+        *ppDev = make_dev(&g_vgdrvFreeBSDChrDevSW,
+                          iUnit,
+                          UID_ROOT,
+                          GID_WHEEL,
+                          0664,
+                          "vboxguest%d", iUnit);
+        if (*ppDev)
+        {
+            dev_ref(*ppDev);
+            (*ppDev)->si_flags |= SI_CHEAPCLONE;
+            Log(("vgdrvFreeBSDClone: Created *ppDev=%p iUnit=%d si_drv1=%p si_drv2=%p\n",
+                     *ppDev, iUnit, (*ppDev)->si_drv1, (*ppDev)->si_drv2));
+            (*ppDev)->si_drv1 = (*ppDev)->si_drv2 = NULL;
+        }
+        else
+            Log(("vgdrvFreeBSDClone: make_dev iUnit=%d failed\n", iUnit));
+    }
+    else
+        Log(("vgdrvFreeBSDClone: Existing *ppDev=%p iUnit=%d si_drv1=%p si_drv2=%p\n",
+             *ppDev, iUnit, (*ppDev)->si_drv1, (*ppDev)->si_drv2));
+}
+
+/**
+ * File open handler
+ *
+ */
+#if __FreeBSD_version >= 700000
+static int vgdrvFreeBSDOpen(struct cdev *pDev, int fOpen, struct thread *pTd, struct file *pFd)
+#else
+static int vgdrvFreeBSDOpen(struct cdev *pDev, int fOpen, struct thread *pTd)
+#endif
+{
+    int                 rc;
+    PVBOXGUESTSESSION   pSession;
+    uint32_t            fRequestor;
+    struct ucred       *pCred = curthread->td_ucred;
+    if (!pCred)
+        pCred = curproc->p_ucred;
+
+    LogFlow(("vgdrvFreeBSDOpen:\n"));
+
+    /*
+     * Try grab it (we don't grab the giant, remember).
+     */
+    if (!ASMAtomicCmpXchgPtr(&pDev->si_drv1, (void *)0x42, NULL))
+        return EBUSY;
+
+    /*
+     * Create a new session.
+     */
+    fRequestor = VMMDEV_REQUESTOR_USERMODE | VMMDEV_REQUESTOR_TRUST_NOT_GIVEN;
+    if (pCred && pCred->cr_uid == 0)
+        fRequestor |= VMMDEV_REQUESTOR_USR_ROOT;
+    else
+        fRequestor |= VMMDEV_REQUESTOR_USR_USER;
+    if (pCred && groupmember(0, pCred))
+        fRequestor |= VMMDEV_REQUESTOR_GRP_WHEEL;
+    fRequestor |= VMMDEV_REQUESTOR_NO_USER_DEVICE; /** @todo implement /dev/vboxuser
+    if (!fUnrestricted)
+        fRequestor |= VMMDEV_REQUESTOR_USER_DEVICE; */
+    fRequestor |= VMMDEV_REQUESTOR_CON_DONT_KNOW; /** @todo see if we can figure out console relationship of pProc. */
+    rc = VGDrvCommonCreateUserSession(&g_DevExt, fRequestor, &pSession);
+    if (RT_SUCCESS(rc))
+    {
+        if (ASMAtomicCmpXchgPtr(&pDev->si_drv1, pSession, (void *)0x42))
+        {
+            Log(("vgdrvFreeBSDOpen: success - g_DevExt=%p pSession=%p rc=%d pid=%d\n", &g_DevExt, pSession, rc, (int)RTProcSelf()));
+            ASMAtomicIncU32(&cUsers);
+            return 0;
+        }
+
+        VGDrvCommonCloseSession(&g_DevExt, pSession);
+    }
+
+    LogRel(("vgdrvFreeBSDOpen: failed. rc=%d\n", rc));
+    return RTErrConvertToErrno(rc);
+}
+
+/**
+ * File close handler
+ *
+ */
+static int vgdrvFreeBSDClose(struct cdev *pDev, int fFile, int DevType, struct thread *pTd)
+{
+    PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)pDev->si_drv1;
+    Log(("vgdrvFreeBSDClose: fFile=%#x pSession=%p\n", fFile, pSession));
+
+    /*
+     * Close the session if it's still hanging on to the device...
+     */
+    if (VALID_PTR(pSession))
+    {
+        VGDrvCommonCloseSession(&g_DevExt, pSession);
+        if (!ASMAtomicCmpXchgPtr(&pDev->si_drv1, NULL, pSession))
+            Log(("vgdrvFreeBSDClose: si_drv1=%p expected %p!\n", pDev->si_drv1, pSession));
+        ASMAtomicDecU32(&cUsers);
+        /* Don't use destroy_dev here because it may sleep resulting in a hanging user process. */
+        destroy_dev_sched(pDev);
+    }
+    else
+        Log(("vgdrvFreeBSDClose: si_drv1=%p!\n", pSession));
+    return 0;
+}
+
+
+/**
+ * I/O control request.
+ *
+ * @returns depends...
+ * @param   pDev        The device.
+ * @param   ulCmd       The command.
+ * @param   pvData      Pointer to the data.
+ * @param   fFile       The file descriptor flags.
+ * @param   pTd         The calling thread.
+ */
+static int vgdrvFreeBSDIOCtl(struct cdev *pDev, u_long ulCmd, caddr_t pvData, int fFile, struct thread *pTd)
+{
+    PVBOXGUESTSESSION pSession;
+    devfs_get_cdevpriv((void **)&pSession);
+
+    /*
+     * Deal with the fast ioctl path first.
+     */
+    if (VBGL_IOCTL_IS_FAST(ulCmd))
+        return VGDrvCommonIoCtlFast(ulCmd, &g_DevExt, pSession);
+
+    return vgdrvFreeBSDIOCtlSlow(pSession, ulCmd, pvData, pTd);
+}
+
+
+/**
+ * Deal with the 'slow' I/O control requests.
+ *
+ * @returns 0 on success, appropriate errno on failure.
+ * @param   pSession    The session.
+ * @param   ulCmd       The command.
+ * @param   pvData      The request data.
+ * @param   pTd         The calling thread.
+ */
+static int vgdrvFreeBSDIOCtlSlow(PVBOXGUESTSESSION pSession, u_long ulCmd, caddr_t pvData, struct thread *pTd)
+{
+    PVBGLREQHDR pHdr;
+    uint32_t    cbReq = IOCPARM_LEN(ulCmd);
+    void       *pvUser = NULL;
+
+    /*
+     * Buffered request?
+     */
+    if ((IOC_DIRMASK & ulCmd) == IOC_INOUT)
+    {
+        pHdr = (PVBGLREQHDR)pvData;
+        if (RT_UNLIKELY(cbReq < sizeof(*pHdr)))
+        {
+            LogRel(("vgdrvFreeBSDIOCtlSlow: cbReq=%#x < %#x; ulCmd=%#lx\n", cbReq, (int)sizeof(*pHdr), ulCmd));
+            return EINVAL;
+        }
+        if (RT_UNLIKELY(pHdr->uVersion != VBGLREQHDR_VERSION))
+        {
+            LogRel(("vgdrvFreeBSDIOCtlSlow: bad uVersion=%#x; ulCmd=%#lx\n", pHdr->uVersion, ulCmd));
+            return EINVAL;
+        }
+        if (RT_UNLIKELY(   RT_MAX(pHdr->cbIn, pHdr->cbOut) != cbReq
+                        || pHdr->cbIn < sizeof(*pHdr)
+                        || (pHdr->cbOut < sizeof(*pHdr) && pHdr->cbOut != 0)))
+        {
+            LogRel(("vgdrvFreeBSDIOCtlSlow: max(%#x,%#x) != %#x; ulCmd=%#lx\n", pHdr->cbIn, pHdr->cbOut, cbReq, ulCmd));
+            return EINVAL;
+        }
+    }
+    /*
+     * Big unbuffered request?
+     */
+    else if ((IOC_DIRMASK & ulCmd) == IOC_VOID && !cbReq)
+    {
+        /*
+         * Read the header, validate it and figure out how much that needs to be buffered.
+         */
+        VBGLREQHDR Hdr;
+        pvUser = *(void **)pvData;
+        int rc = copyin(pvUser, &Hdr, sizeof(Hdr));
+        if (RT_UNLIKELY(rc))
+        {
+            LogRel(("vgdrvFreeBSDIOCtlSlow: copyin(%p,Hdr,) -> %#x; ulCmd=%#lx\n", pvUser, rc, ulCmd));
+            return rc;
+        }
+        if (RT_UNLIKELY(Hdr.uVersion != VBGLREQHDR_VERSION))
+        {
+            LogRel(("vgdrvFreeBSDIOCtlSlow: bad uVersion=%#x; ulCmd=%#lx\n", Hdr.uVersion, ulCmd));
+            return EINVAL;
+        }
+        cbReq = RT_MAX(Hdr.cbIn, Hdr.cbOut);
+        if (RT_UNLIKELY(   Hdr.cbIn < sizeof(Hdr)
+                        || (Hdr.cbOut < sizeof(Hdr) && Hdr.cbOut != 0)
+                        || cbReq > _1M*16))
+        {
+            LogRel(("vgdrvFreeBSDIOCtlSlow: max(%#x,%#x); ulCmd=%#lx\n", Hdr.cbIn, Hdr.cbOut, ulCmd));
+            return EINVAL;
+        }
+
+        /*
+         * Allocate buffer and copy in the data.
+         */
+        pHdr = (PVBGLREQHDR)RTMemTmpAlloc(cbReq);
+        if (RT_UNLIKELY(!pHdr))
+        {
+            LogRel(("vgdrvFreeBSDIOCtlSlow: failed to allocate buffer of %d bytes; ulCmd=%#lx\n", cbReq, ulCmd));
+            return ENOMEM;
+        }
+        rc = copyin(pvUser, pHdr, Hdr.cbIn);
+        if (RT_UNLIKELY(rc))
+        {
+            LogRel(("vgdrvFreeBSDIOCtlSlow: copyin(%p,%p,%#x) -> %#x; ulCmd=%#lx\n",
+                        pvUser, pHdr, Hdr.cbIn, rc, ulCmd));
+            RTMemTmpFree(pHdr);
+            return rc;
+        }
+        if (Hdr.cbIn < cbReq)
+            RT_BZERO((uint8_t *)pHdr + Hdr.cbIn, cbReq - Hdr.cbIn);
+    }
+    else
+    {
+        Log(("vgdrvFreeBSDIOCtlSlow: huh? cbReq=%#x ulCmd=%#lx\n", cbReq, ulCmd));
+        return EINVAL;
+    }
+
+    /*
+     * Process the IOCtl.
+     */
+    int rc = VGDrvCommonIoCtl(ulCmd, &g_DevExt, pSession, pHdr, cbReq);
+    if (RT_LIKELY(!rc))
+    {
+        /*
+         * If unbuffered, copy back the result before returning.
+         */
+        if (pvUser)
+        {
+            uint32_t cbOut = pHdr->cbOut;
+            if (cbOut > cbReq)
+            {
+                LogRel(("vgdrvFreeBSDIOCtlSlow: too much output! %#x > %#x; uCmd=%#lx!\n", cbOut, cbReq, ulCmd));
+                cbOut = cbReq;
+            }
+            rc = copyout(pHdr, pvUser, cbOut);
+            if (RT_UNLIKELY(rc))
+                LogRel(("vgdrvFreeBSDIOCtlSlow: copyout(%p,%p,%#x) -> %d; uCmd=%#lx!\n", pHdr, pvUser, cbOut, rc, ulCmd));
+
+            Log(("vgdrvFreeBSDIOCtlSlow: returns %d / %d ulCmd=%lx\n", 0, pHdr->rc, ulCmd));
+
+            /* cleanup */
+            RTMemTmpFree(pHdr);
+        }
+    }
+    else
+    {
+        /*
+         * The request failed, just clean up.
+         */
+        if (pvUser)
+            RTMemTmpFree(pHdr);
+
+        Log(("vgdrvFreeBSDIOCtlSlow: ulCmd=%lx pData=%p failed, rc=%d\n", ulCmd, pvData, rc));
+        rc = EINVAL;
+    }
+
+    return rc;
+}
+
+
+/**
+ * @note This code is duplicated on other platforms with variations, so please
+ *       keep them all up to date when making changes!
+ */
+int VBOXCALL VBoxGuestIDC(void *pvSession, uintptr_t uReq, PVBGLREQHDR pReqHdr, size_t cbReq)
+{
+    /*
+     * Simple request validation (common code does the rest).
+     */
+    int rc;
+    if (   RT_VALID_PTR(pReqHdr)
+        && cbReq >= sizeof(*pReqHdr))
+    {
+        /*
+         * All requests except the connect one requires a valid session.
+         */
+        PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)pvSession;
+        if (pSession)
+        {
+            if (   RT_VALID_PTR(pSession)
+                && pSession->pDevExt == &g_DevExt)
+                rc = VGDrvCommonIoCtl(uReq, &g_DevExt, pSession, pReqHdr, cbReq);
+            else
+                rc = VERR_INVALID_HANDLE;
+        }
+        else if (uReq == VBGL_IOCTL_IDC_CONNECT)
+        {
+            rc = VGDrvCommonCreateKernelSession(&g_DevExt, &pSession);
+            if (RT_SUCCESS(rc))
+            {
+                rc = VGDrvCommonIoCtl(uReq, &g_DevExt, pSession, pReqHdr, cbReq);
+                if (RT_FAILURE(rc))
+                    VGDrvCommonCloseSession(&g_DevExt, pSession);
+            }
+        }
+        else
+            rc = VERR_INVALID_HANDLE;
+    }
+    else
+        rc = VERR_INVALID_POINTER;
+    return rc;
+}
+
+
+static int vgdrvFreeBSDPoll(struct cdev *pDev, int fEvents, struct thread *td)
+{
+    int fEventsProcessed;
+
+    LogFlow(("vgdrvFreeBSDPoll: fEvents=%d\n", fEvents));
+
+    PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)pDev->si_drv1;
+    if (RT_UNLIKELY(!VALID_PTR(pSession))) {
+        Log(("vgdrvFreeBSDPoll: no state data for %s\n", devtoname(pDev)));
+        return (fEvents & (POLLHUP|POLLIN|POLLRDNORM|POLLOUT|POLLWRNORM));
+    }
+
+    uint32_t u32CurSeq = ASMAtomicUoReadU32(&g_DevExt.u32MousePosChangedSeq);
+    if (pSession->u32MousePosChangedSeq != u32CurSeq)
+    {
+        fEventsProcessed = fEvents & (POLLIN | POLLRDNORM);
+        pSession->u32MousePosChangedSeq = u32CurSeq;
+    }
+    else
+    {
+        fEventsProcessed = 0;
+
+        selrecord(td, &g_SelInfo);
+    }
+
+    return fEventsProcessed;
+}
+
+static int vgdrvFreeBSDWrite(struct cdev *pDev, struct uio *pUio, int fIo)
+{
+    return 0;
+}
+
+static int vgdrvFreeBSDRead(struct cdev *pDev, struct uio *pUio, int fIo)
+{
+    return 0;
+}
+
+static int vgdrvFreeBSDDetach(device_t pDevice)
+{
+    struct VBoxGuestDeviceState *pState = device_get_softc(pDevice);
+
+    if (cUsers > 0)
+        return EBUSY;
+
+    /*
+     * Reverse what we did in vgdrvFreeBSDAttach.
+     */
+    if (g_vgdrvFreeBSDEHTag != NULL)
+        EVENTHANDLER_DEREGISTER(dev_clone, g_vgdrvFreeBSDEHTag);
+
+    clone_cleanup(&g_pvgdrvFreeBSDClones);
+
+    vgdrvFreeBSDRemoveIRQ(pDevice, pState);
+
+    if (pState->pVMMDevMemRes)
+        bus_release_resource(pDevice, SYS_RES_MEMORY, pState->iVMMDevMemResId, pState->pVMMDevMemRes);
+    if (pState->pIOPortRes)
+        bus_release_resource(pDevice, SYS_RES_IOPORT, pState->iIOPortResId, pState->pIOPortRes);
+
+    VGDrvCommonDeleteDevExt(&g_DevExt);
+
+    RTR0Term();
+
+    return 0;
+}
+
+
+/**
+ * Interrupt service routine.
+ *
+ * @returns Whether the interrupt was from VMMDev.
+ * @param   pvState Opaque pointer to the device state.
+ */
+static int vgdrvFreeBSDISR(void *pvState)
+{
+    LogFlow(("vgdrvFreeBSDISR: pvState=%p\n", pvState));
+
+    bool fOurIRQ = VGDrvCommonISR(&g_DevExt);
+
+    return fOurIRQ ? 0 : 1;
+}
+
+void VGDrvNativeISRMousePollEvent(PVBOXGUESTDEVEXT pDevExt)
+{
+    LogFlow(("VGDrvNativeISRMousePollEvent:\n"));
+
+    /*
+     * Wake up poll waiters.
+     */
+    selwakeup(&g_SelInfo);
+}
+
+
+bool VGDrvNativeProcessOption(PVBOXGUESTDEVEXT pDevExt, const char *pszName, const char *pszValue)
+{
+    RT_NOREF(pDevExt); RT_NOREF(pszName); RT_NOREF(pszValue);
+    return false;
+}
+
+
+/**
+ * Sets IRQ for VMMDev.
+ *
+ * @returns FreeBSD error code.
+ * @param   pDevice  Pointer to the device info structure.
+ * @param   pvState  Pointer to the state info structure.
+ */
+static int vgdrvFreeBSDAddIRQ(device_t pDevice, void *pvState)
+{
+    int iResId = 0;
+    int rc = 0;
+    struct VBoxGuestDeviceState *pState = (struct VBoxGuestDeviceState *)pvState;
+
+    pState->pIrqRes = bus_alloc_resource_any(pDevice, SYS_RES_IRQ, &iResId, RF_SHAREABLE | RF_ACTIVE);
+
+#if __FreeBSD_version >= 700000
+    rc = bus_setup_intr(pDevice, pState->pIrqRes, INTR_TYPE_BIO | INTR_MPSAFE, NULL, (driver_intr_t *)vgdrvFreeBSDISR, pState,
+                        &pState->pfnIrqHandler);
+#else
+    rc = bus_setup_intr(pDevice, pState->pIrqRes, INTR_TYPE_BIO, (driver_intr_t *)vgdrvFreeBSDISR, pState, &pState->pfnIrqHandler);
+#endif
+
+    if (rc)
+    {
+        pState->pfnIrqHandler = NULL;
+        return VERR_DEV_IO_ERROR;
+    }
+
+    pState->iIrqResId = iResId;
+
+    return VINF_SUCCESS;
+}
+
+/**
+ * Removes IRQ for VMMDev.
+ *
+ * @param   pDevice  Pointer to the device info structure.
+ * @param   pvState  Opaque pointer to the state info structure.
+ */
+static void vgdrvFreeBSDRemoveIRQ(device_t pDevice, void *pvState)
+{
+    struct VBoxGuestDeviceState *pState = (struct VBoxGuestDeviceState *)pvState;
+
+    if (pState->pIrqRes)
+    {
+        bus_teardown_intr(pDevice, pState->pIrqRes, pState->pfnIrqHandler);
+        bus_release_resource(pDevice, SYS_RES_IRQ, 0, pState->pIrqRes);
+    }
+}
+
+static int vgdrvFreeBSDAttach(device_t pDevice)
+{
+    int rc;
+    int iResId;
+    struct VBoxGuestDeviceState *pState;
+
+    cUsers = 0;
+
+    /*
+     * Initialize IPRT R0 driver, which internally calls OS-specific r0 init.
+     */
+    rc = RTR0Init(0);
+    if (RT_FAILURE(rc))
+    {
+        LogFunc(("RTR0Init failed.\n"));
+        return ENXIO;
+    }
+
+    pState = device_get_softc(pDevice);
+
+    /*
+     * Allocate I/O port resource.
+     */
+    iResId                 = PCIR_BAR(0);
+    pState->pIOPortRes     = bus_alloc_resource_any(pDevice, SYS_RES_IOPORT, &iResId, RF_ACTIVE);
+    pState->uIOPortBase    = rman_get_start(pState->pIOPortRes);
+    pState->iIOPortResId   = iResId;
+    if (pState->uIOPortBase)
+    {
+        /*
+         * Map the MMIO region.
+         */
+        iResId                   = PCIR_BAR(1);
+        pState->pVMMDevMemRes    = bus_alloc_resource_any(pDevice, SYS_RES_MEMORY, &iResId, RF_ACTIVE);
+        pState->VMMDevMemHandle  = rman_get_bushandle(pState->pVMMDevMemRes);
+        pState->VMMDevMemSize    = rman_get_size(pState->pVMMDevMemRes);
+
+        pState->pMMIOBase        = rman_get_virtual(pState->pVMMDevMemRes);
+        pState->iVMMDevMemResId  = iResId;
+        if (pState->pMMIOBase)
+        {
+            /*
+             * Call the common device extension initializer.
+             */
+            rc = VGDrvCommonInitDevExt(&g_DevExt, pState->uIOPortBase,
+                                       pState->pMMIOBase, pState->VMMDevMemSize,
+#if ARCH_BITS == 64
+                                       VBOXOSTYPE_FreeBSD_x64,
+#else
+                                       VBOXOSTYPE_FreeBSD,
+#endif
+                                       VMMDEV_EVENT_MOUSE_POSITION_CHANGED);
+            if (RT_SUCCESS(rc))
+            {
+                /*
+                 * Add IRQ of VMMDev.
+                 */
+                rc = vgdrvFreeBSDAddIRQ(pDevice, pState);
+                if (RT_SUCCESS(rc))
+                {
+                    /*
+                     * Read host configuration.
+                     */
+                    VGDrvCommonProcessOptionsFromHost(&g_DevExt);
+
+                    /*
+                     * Configure device cloning.
+                     */
+                    clone_setup(&g_pvgdrvFreeBSDClones);
+                    g_vgdrvFreeBSDEHTag = EVENTHANDLER_REGISTER(dev_clone, vgdrvFreeBSDClone, 0, 1000);
+                    if (g_vgdrvFreeBSDEHTag)
+                    {
+                        printf(DEVICE_NAME ": loaded successfully\n");
+                        return 0;
+                    }
+
+                    printf(DEVICE_NAME ": EVENTHANDLER_REGISTER(dev_clone,,,) failed\n");
+                    clone_cleanup(&g_pvgdrvFreeBSDClones);
+                    vgdrvFreeBSDRemoveIRQ(pDevice, pState);
+                }
+                else
+                    printf((DEVICE_NAME ": VGDrvCommonInitDevExt failed.\n"));
+                VGDrvCommonDeleteDevExt(&g_DevExt);
+            }
+            else
+                printf((DEVICE_NAME ": vgdrvFreeBSDAddIRQ failed.\n"));
+        }
+        else
+            printf((DEVICE_NAME ": MMIO region setup failed.\n"));
+    }
+    else
+        printf((DEVICE_NAME ": IOport setup failed.\n"));
+
+    RTR0Term();
+    return ENXIO;
+}
+
+static int vgdrvFreeBSDProbe(device_t pDevice)
+{
+    if ((pci_get_vendor(pDevice) == VMMDEV_VENDORID) && (pci_get_device(pDevice) == VMMDEV_DEVICEID))
+        return 0;
+
+    return ENXIO;
+}
+
+static device_method_t vgdrvFreeBSDMethods[] =
+{
+    /* Device interface. */
+    DEVMETHOD(device_probe,  vgdrvFreeBSDProbe),
+    DEVMETHOD(device_attach, vgdrvFreeBSDAttach),
+    DEVMETHOD(device_detach, vgdrvFreeBSDDetach),
+    {0,0}
+};
+
+static driver_t vgdrvFreeBSDDriver =
+{
+    DEVICE_NAME,
+    vgdrvFreeBSDMethods,
+    sizeof(struct VBoxGuestDeviceState),
+};
+
+static devclass_t vgdrvFreeBSDClass;
+
+DRIVER_MODULE(vboxguest, pci, vgdrvFreeBSDDriver, vgdrvFreeBSDClass, 0, 0);
+MODULE_VERSION(vboxguest, 1);
+