diff options
Diffstat (limited to 'src/VBox/Additions/common/VBoxGuest/VBoxGuest-netbsd.c')
| -rw-r--r-- | src/VBox/Additions/common/VBoxGuest/VBoxGuest-netbsd.c | 1094 |
1 files changed, 1094 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/VBoxGuest/VBoxGuest-netbsd.c b/src/VBox/Additions/common/VBoxGuest/VBoxGuest-netbsd.c new file mode 100644 index 00000000..cd60e4aa --- /dev/null +++ b/src/VBox/Additions/common/VBoxGuest/VBoxGuest-netbsd.c @@ -0,0 +1,1094 @@ +/* $Id: VBoxGuest-netbsd.c $ */ +/** @file + * VirtualBox Guest Additions Driver for NetBSD. + */ + +/* + * Copyright (C) 2007-2022 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 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/select.h> +#include <sys/conf.h> +#include <sys/kernel.h> +#include <sys/kmem.h> +#include <sys/module.h> +#include <sys/device.h> +#include <sys/bus.h> +#include <sys/poll.h> +#include <sys/proc.h> +#include <sys/kauth.h> +#include <sys/stat.h> +#include <sys/selinfo.h> +#include <sys/queue.h> +#include <sys/lock.h> +#include <sys/types.h> +#include <sys/conf.h> +#include <sys/malloc.h> +#include <sys/uio.h> +#include <sys/file.h> +#include <sys/filedesc.h> +#include <sys/vfs_syscalls.h> +#include <dev/pci/pcivar.h> +#include <dev/pci/pcireg.h> +#include <dev/pci/pcidevs.h> + +#include <dev/wscons/wsconsio.h> +#include <dev/wscons/wsmousevar.h> +#include <dev/wscons/tpcalibvar.h> + +#ifdef PVM +# undef PVM +#endif +#include "VBoxGuestInternal.h" +#include <VBox/log.h> +#include <iprt/err.h> +#include <iprt/assert.h> +#include <iprt/initterm.h> +#include <iprt/process.h> +#include <iprt/mem.h> +#include <iprt/asm.h> + + +/********************************************************************************************************************************* +* Defined Constants And Macros * +*********************************************************************************************************************************/ +/** The module name. */ +#define DEVICE_NAME "vboxguest" + + +/********************************************************************************************************************************* +* Structures and Typedefs * +*********************************************************************************************************************************/ +typedef struct VBoxGuestDeviceState +{ + device_t sc_dev; + pci_chipset_tag_t sc_pc; + + bus_space_tag_t sc_iot; + bus_space_handle_t sc_ioh; + bus_addr_t sc_iobase; + bus_size_t sc_iosize; + + bus_space_tag_t sc_memt; + bus_space_handle_t sc_memh; + + /** Size of the memory area. */ + bus_size_t sc_memsize; + + /** IRQ resource handle. */ + pci_intr_handle_t ih; + /** Pointer to the IRQ handler. */ + void *pfnIrqHandler; + + /** Controller features, limits and status. */ + u_int vboxguest_state; + + device_t sc_wsmousedev; + VMMDevReqMouseStatus *sc_vmmmousereq; + PVBOXGUESTSESSION sc_session; + struct tpcalib_softc sc_tpcalib; +} vboxguest_softc; + + +struct vboxguest_fdata +{ + vboxguest_softc *sc; + PVBOXGUESTSESSION session; +}; + +#define VBOXGUEST_STATE_INITOK 1 << 0 + + +/********************************************************************************************************************************* +* Internal Functions * +*********************************************************************************************************************************/ +/* + * Driver(9) autoconf machinery. + */ +static int VBoxGuestNetBSDMatch(device_t parent, cfdata_t match, void *aux); +static void VBoxGuestNetBSDAttach(device_t parent, device_t self, void *aux); +static void VBoxGuestNetBSDWsmAttach(vboxguest_softc *sc); +static int VBoxGuestNetBSDDetach(device_t self, int flags); + +/* + * IRQ related functions. + */ +static int VBoxGuestNetBSDAddIRQ(vboxguest_softc *sc, struct pci_attach_args *pa); +static void VBoxGuestNetBSDRemoveIRQ(vboxguest_softc *sc); +static int VBoxGuestNetBSDISR(void *pvState); + +/* + * Character device file handlers. + */ +static int VBoxGuestNetBSDOpen(dev_t device, int flags, int fmt, struct lwp *process); +static int VBoxGuestNetBSDClose(struct file *fp); +static int VBoxGuestNetBSDIOCtl(struct file *fp, u_long cmd, void *addr); +static int VBoxGuestNetBSDIOCtlSlow(struct vboxguest_fdata *fdata, u_long command, void *data); +static int VBoxGuestNetBSDPoll(struct file *fp, int events); + +/* + * wsmouse(4) accessops + */ +static int VBoxGuestNetBSDWsmEnable(void *cookie); +static void VBoxGuestNetBSDWsmDisable(void *cookie); +static int VBoxGuestNetBSDWsmIOCtl(void *cookie, u_long cmd, void *data, int flag, struct lwp *l); + +static int VBoxGuestNetBSDSetMouseStatus(vboxguest_softc *sc, uint32_t fStatus); + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ +extern struct cfdriver vboxguest_cd; /* CFDRIVER_DECL */ +extern struct cfattach vboxguest_ca; /* CFATTACH_DECL */ + +/* + * The /dev/vboxguest character device entry points. + */ +static struct cdevsw g_VBoxGuestNetBSDChrDevSW = +{ + .d_open = VBoxGuestNetBSDOpen, + .d_close = noclose, + .d_read = noread, + .d_write = nowrite, + .d_ioctl = noioctl, + .d_stop = nostop, + .d_tty = notty, + .d_poll = nopoll, + .d_mmap = nommap, + .d_kqfilter = nokqfilter, +}; + +static const struct fileops vboxguest_fileops = { + .fo_read = fbadop_read, + .fo_write = fbadop_write, + .fo_ioctl = VBoxGuestNetBSDIOCtl, + .fo_fcntl = fnullop_fcntl, + .fo_poll = VBoxGuestNetBSDPoll, + .fo_stat = fbadop_stat, + .fo_close = VBoxGuestNetBSDClose, + .fo_kqfilter = fnullop_kqfilter, + .fo_restart = fnullop_restart +}; + + +const struct wsmouse_accessops vboxguest_wsm_accessops = { + VBoxGuestNetBSDWsmEnable, + VBoxGuestNetBSDWsmIOCtl, + VBoxGuestNetBSDWsmDisable, +}; + + +/* + * XXX: wsmux(4) doesn't properly handle the case when two mice with + * absolute position events but different calibration data are being + * multiplexed. Without GAs the absolute events will be reported + * through the tablet ums(4) device with the range of 32k, but with + * GAs the absolute events will be reported through the VMM device + * (wsmouse at vboxguest) and VMM uses the range of 64k. Which one + * responds to the calibration ioctl depends on the order of + * attachment. On boot kernel attaches ums first and GAs later, so + * it's VMM (this driver) that gets the ioctl. After save/restore the + * ums will be detached and re-attached and after that it's ums that + * will get the ioctl, but the events (with a wider range) will still + * come via the VMM, confusing X, wsmoused, etc. Hack around that by + * forcing the range here to match the tablet's range. + * + * We force VMM range into the ums range and rely on the fact that no + * actual calibration is done and both devices are used in the raw + * mode. See tpcalib_trans call below. + * + * Cf. src/VBox/Devices/Input/UsbMouse.cpp + */ +#define USB_TABLET_RANGE_MIN 0 +#define USB_TABLET_RANGE_MAX 0x7fff + +static struct wsmouse_calibcoords vboxguest_wsm_default_calib = { + .minx = USB_TABLET_RANGE_MIN, // VMMDEV_MOUSE_RANGE_MIN, + .miny = USB_TABLET_RANGE_MIN, // VMMDEV_MOUSE_RANGE_MIN, + .maxx = USB_TABLET_RANGE_MAX, // VMMDEV_MOUSE_RANGE_MAX, + .maxy = USB_TABLET_RANGE_MAX, // VMMDEV_MOUSE_RANGE_MAX, + .samplelen = WSMOUSE_CALIBCOORDS_RESET, +}; + +/** Device extention & session data association structure. */ +static VBOXGUESTDEVEXT g_DevExt; + +static vboxguest_softc *g_SC; + +/** Reference counter */ +static volatile uint32_t cUsers; +/** selinfo structure used for polling. */ +static struct selinfo g_SelInfo; + + +CFATTACH_DECL_NEW(vboxguest, sizeof(vboxguest_softc), + VBoxGuestNetBSDMatch, VBoxGuestNetBSDAttach, VBoxGuestNetBSDDetach, NULL); + + +static int VBoxGuestNetBSDMatch(device_t parent, cfdata_t match, void *aux) +{ + const struct pci_attach_args *pa = aux; + + if (RT_UNLIKELY(g_SC != NULL)) /* should not happen */ + return 0; + + if ( PCI_VENDOR(pa->pa_id) == VMMDEV_VENDORID + && PCI_PRODUCT(pa->pa_id) == VMMDEV_DEVICEID) + { + return 1; + } + + return 0; +} + + +static void VBoxGuestNetBSDAttach(device_t parent, device_t self, void *aux) +{ + int rc = VINF_SUCCESS; + int iResId = 0; + vboxguest_softc *sc; + struct pci_attach_args *pa = aux; + bus_space_tag_t iot, memt; + bus_space_handle_t ioh, memh; + bus_dma_segment_t seg; + int ioh_valid, memh_valid; + + KASSERT(g_SC == NULL); + + cUsers = 0; + + aprint_normal(": VirtualBox Guest\n"); + + sc = device_private(self); + sc->sc_dev = self; + + /* + * Initialize IPRT R0 driver, which internally calls OS-specific r0 init. + */ + rc = RTR0Init(0); + if (RT_FAILURE(rc)) + { + LogFunc(("RTR0Init failed.\n")); + aprint_error_dev(sc->sc_dev, "RTR0Init failed\n"); + return; + } + + sc->sc_pc = pa->pa_pc; + + /* + * Allocate I/O port resource. + */ + ioh_valid = (pci_mapreg_map(pa, PCI_BAR0, + PCI_MAPREG_TYPE_IO, 0, + &sc->sc_iot, &sc->sc_ioh, + &sc->sc_iobase, &sc->sc_iosize) == 0); + + if (ioh_valid) + { + + /* + * Map the MMIO region. + */ + memh_valid = (pci_mapreg_map(pa, PCI_BAR1, + PCI_MAPREG_TYPE_MEM, BUS_SPACE_MAP_LINEAR, + &sc->sc_memt, &sc->sc_memh, + NULL, &sc->sc_memsize) == 0); + if (memh_valid) + { + /* + * Call the common device extension initializer. + */ + rc = VGDrvCommonInitDevExt(&g_DevExt, sc->sc_iobase, + bus_space_vaddr(sc->sc_memt, sc->sc_memh), + sc->sc_memsize, +#if ARCH_BITS == 64 + VBOXOSTYPE_NetBSD_x64, +#else + VBOXOSTYPE_NetBSD, +#endif + VMMDEV_EVENT_MOUSE_POSITION_CHANGED); + if (RT_SUCCESS(rc)) + { + /* + * Add IRQ of VMMDev. + */ + rc = VBoxGuestNetBSDAddIRQ(sc, pa); + if (RT_SUCCESS(rc)) + { + sc->vboxguest_state |= VBOXGUEST_STATE_INITOK; + + /* + * Read host configuration. + */ + VGDrvCommonProcessOptionsFromHost(&g_DevExt); + + /* + * Attach wsmouse. + */ + VBoxGuestNetBSDWsmAttach(sc); + + g_SC = sc; + return; + } + VGDrvCommonDeleteDevExt(&g_DevExt); + } + else + { + aprint_error_dev(sc->sc_dev, "init failed\n"); + } + bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize); + } + else + { + aprint_error_dev(sc->sc_dev, "MMIO mapping failed\n"); + } + bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_iosize); + } + else + { + aprint_error_dev(sc->sc_dev, "IO mapping failed\n"); + } + + RTR0Term(); + return; +} + + +/** + * Sets IRQ for VMMDev. + * + * @returns NetBSD error code. + * @param sc Pointer to the state info structure. + * @param pa Pointer to the PCI attach arguments. + */ +static int VBoxGuestNetBSDAddIRQ(vboxguest_softc *sc, struct pci_attach_args *pa) +{ + int iResId = 0; + int rc = 0; + const char *intrstr; +#if __NetBSD_Prereq__(6, 99, 39) + char intstrbuf[100]; +#endif + + LogFlow((DEVICE_NAME ": %s\n", __func__)); + + if (pci_intr_map(pa, &sc->ih)) + { + aprint_error_dev(sc->sc_dev, "couldn't map interrupt.\n"); + return VERR_DEV_IO_ERROR; + } + + intrstr = pci_intr_string(sc->sc_pc, sc->ih +#if __NetBSD_Prereq__(6, 99, 39) + , intstrbuf, sizeof(intstrbuf) +#endif + ); + aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr); + + sc->pfnIrqHandler = pci_intr_establish(sc->sc_pc, sc->ih, IPL_BIO, VBoxGuestNetBSDISR, sc); + if (sc->pfnIrqHandler == NULL) + { + aprint_error_dev(sc->sc_dev, "couldn't establish interrupt\n"); + return VERR_DEV_IO_ERROR; + } + + return VINF_SUCCESS; +} + + +/* + * Optionally attach wsmouse(4) device as a child. + */ +static void VBoxGuestNetBSDWsmAttach(vboxguest_softc *sc) +{ + struct wsmousedev_attach_args am = { &vboxguest_wsm_accessops, sc }; + + PVBOXGUESTSESSION session = NULL; + VMMDevReqMouseStatus *req = NULL; + int rc; + + rc = VGDrvCommonCreateKernelSession(&g_DevExt, &session); + if (RT_FAILURE(rc)) + goto fail; + + rc = VbglR0GRAlloc((VMMDevRequestHeader **)&req, sizeof(*req), + VMMDevReq_GetMouseStatus); + if (RT_FAILURE(rc)) + goto fail; + +#if __NetBSD_Prereq__(9,99,88) + sc->sc_wsmousedev = config_found(sc->sc_dev, &am, wsmousedevprint, + CFARGS(.iattr = "wsmousedev")); +#elif __NetBSD_Prereq__(9,99,82) + sc->sc_wsmousedev = config_found(sc->sc_dev, &am, wsmousedevprint, + CFARG_IATTR, "wsmousedev", + CFARG_EOL); +#else + sc->sc_wsmousedev = config_found_ia(sc->sc_dev, "wsmousedev", + &am, wsmousedevprint); +#endif + + if (sc->sc_wsmousedev == NULL) + goto fail; + + sc->sc_session = session; + sc->sc_vmmmousereq = req; + + tpcalib_init(&sc->sc_tpcalib); + tpcalib_ioctl(&sc->sc_tpcalib, WSMOUSEIO_SCALIBCOORDS, + &vboxguest_wsm_default_calib, 0, 0); + return; + + fail: + if (session != NULL) + VGDrvCommonCloseSession(&g_DevExt, session); + if (req != NULL) + VbglR0GRFree((VMMDevRequestHeader *)req); +} + + +static int VBoxGuestNetBSDDetach(device_t self, int flags) +{ + vboxguest_softc *sc; + sc = device_private(self); + + LogFlow((DEVICE_NAME ": %s\n", __func__)); + + if (cUsers > 0) + return EBUSY; + + if ((sc->vboxguest_state & VBOXGUEST_STATE_INITOK) == 0) + return 0; + + /* + * Reverse what we did in VBoxGuestNetBSDAttach. + */ + if (sc->sc_vmmmousereq != NULL) + VbglR0GRFree((VMMDevRequestHeader *)sc->sc_vmmmousereq); + + VBoxGuestNetBSDRemoveIRQ(sc); + + VGDrvCommonDeleteDevExt(&g_DevExt); + + bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize); + bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_iosize); + + RTR0Term(); + + return config_detach_children(self, flags); +} + + +/** + * Removes IRQ for VMMDev. + * + * @param sc Opaque pointer to the state info structure. + */ +static void VBoxGuestNetBSDRemoveIRQ(vboxguest_softc *sc) +{ + LogFlow((DEVICE_NAME ": %s\n", __func__)); + + if (sc->pfnIrqHandler) + { + pci_intr_disestablish(sc->sc_pc, sc->pfnIrqHandler); + } +} + + +/** + * Interrupt service routine. + * + * @returns Whether the interrupt was from VMMDev. + * @param pvState Opaque pointer to the device state. + */ +static int VBoxGuestNetBSDISR(void *pvState) +{ + LogFlow((DEVICE_NAME ": %s: pvState=%p\n", __func__, pvState)); + + bool fOurIRQ = VGDrvCommonISR(&g_DevExt); + + return fOurIRQ ? 1 : 0; +} + + +/* + * Called by VGDrvCommonISR() if mouse position changed + */ +void VGDrvNativeISRMousePollEvent(PVBOXGUESTDEVEXT pDevExt) +{ + vboxguest_softc *sc = g_SC; + + LogFlow((DEVICE_NAME ": %s\n", __func__)); + + /* + * Wake up poll waiters. + */ + selnotify(&g_SelInfo, 0, 0); + + if (sc->sc_vmmmousereq != NULL) { + int x, y; + int rc; + + sc->sc_vmmmousereq->mouseFeatures = 0; + sc->sc_vmmmousereq->pointerXPos = 0; + sc->sc_vmmmousereq->pointerYPos = 0; + + rc = VbglR0GRPerform(&sc->sc_vmmmousereq->header); + if (RT_FAILURE(rc)) + return; + + /* XXX: see the comment for vboxguest_wsm_default_calib */ + int rawx = (unsigned)sc->sc_vmmmousereq->pointerXPos >> 1; + int rawy = (unsigned)sc->sc_vmmmousereq->pointerYPos >> 1; + tpcalib_trans(&sc->sc_tpcalib, rawx, rawy, &x, &y); + + wsmouse_input(sc->sc_wsmousedev, + 0, /* buttons */ + x, y, + 0, 0, /* z, w */ + WSMOUSE_INPUT_ABSOLUTE_X | WSMOUSE_INPUT_ABSOLUTE_Y); + } +} + + +bool VGDrvNativeProcessOption(PVBOXGUESTDEVEXT pDevExt, const char *pszName, const char *pszValue) +{ + RT_NOREF(pDevExt); RT_NOREF(pszName); RT_NOREF(pszValue); + return false; +} + + +static int VBoxGuestNetBSDSetMouseStatus(vboxguest_softc *sc, uint32_t fStatus) +{ + VBGLIOCSETMOUSESTATUS Req; + int rc; + + VBGLREQHDR_INIT(&Req.Hdr, SET_MOUSE_STATUS); + Req.u.In.fStatus = fStatus; + rc = VGDrvCommonIoCtl(VBGL_IOCTL_SET_MOUSE_STATUS, + &g_DevExt, + sc->sc_session, + &Req.Hdr, sizeof(Req)); + if (RT_SUCCESS(rc)) + rc = Req.Hdr.rc; + + return rc; +} + + +static int +VBoxGuestNetBSDWsmEnable(void *cookie) +{ + vboxguest_softc *sc = cookie; + int rc; + + rc = VBoxGuestNetBSDSetMouseStatus(sc, VMMDEV_MOUSE_GUEST_CAN_ABSOLUTE + | VMMDEV_MOUSE_NEW_PROTOCOL); + if (RT_FAILURE(rc)) + return RTErrConvertToErrno(rc); + + return 0; +} + + +static void +VBoxGuestNetBSDWsmDisable(void *cookie) +{ + vboxguest_softc *sc = cookie; + VBoxGuestNetBSDSetMouseStatus(sc, 0); +} + + +static int +VBoxGuestNetBSDWsmIOCtl(void *cookie, u_long cmd, void *data, int flag, struct lwp *l) +{ + vboxguest_softc *sc = cookie; + + switch (cmd) { + case WSMOUSEIO_GTYPE: + *(u_int *)data = WSMOUSE_TYPE_TPANEL; + break; + + case WSMOUSEIO_SCALIBCOORDS: + case WSMOUSEIO_GCALIBCOORDS: + return tpcalib_ioctl(&sc->sc_tpcalib, cmd, data, flag, l); + + default: + return EPASSTHROUGH; + } + return 0; +} + + +/** + * File open handler + * + */ +static int VBoxGuestNetBSDOpen(dev_t device, int flags, int fmt, struct lwp *pLwp) +{ + vboxguest_softc *sc; + struct vboxguest_fdata *fdata; + file_t *fp; + int fd, error; + + LogFlow((DEVICE_NAME ": %s\n", __func__)); + + if ((sc = device_lookup_private(&vboxguest_cd, minor(device))) == NULL) + { + printf("device_lookup_private failed\n"); + return (ENXIO); + } + + if ((sc->vboxguest_state & VBOXGUEST_STATE_INITOK) == 0) + { + aprint_error_dev(sc->sc_dev, "device not configured\n"); + return (ENXIO); + } + + fdata = kmem_alloc(sizeof(*fdata), KM_SLEEP); + if (fdata != NULL) + { + fdata->sc = sc; + + error = fd_allocfile(&fp, &fd); + if (error == 0) + { + /* + * Create a new session. + */ + struct kauth_cred *pCred = pLwp->l_cred; + int fHaveCred = (pCred != NULL && pCred != NOCRED && pCred != FSCRED); + uint32_t fRequestor; + int fIsWheel; + int rc; + + fRequestor = VMMDEV_REQUESTOR_USERMODE | VMMDEV_REQUESTOR_TRUST_NOT_GIVEN; + + /* uid */ + if (fHaveCred && kauth_cred_geteuid(pCred) == (uid_t)0) + fRequestor |= VMMDEV_REQUESTOR_USR_ROOT; + else + fRequestor |= VMMDEV_REQUESTOR_USR_USER; + + /* gid */ + if (fHaveCred + && (kauth_cred_getegid(pCred) == (gid_t)0 + || (kauth_cred_ismember_gid(pCred, 0, &fIsWheel) == 0 + && fIsWheel))) + fRequestor |= VMMDEV_REQUESTOR_GRP_WHEEL; + +#if 0 /** @todo implement /dev/vboxuser */ + if (!fUnrestricted) + fRequestor |= VMMDEV_REQUESTOR_USER_DEVICE; +#else + fRequestor |= VMMDEV_REQUESTOR_NO_USER_DEVICE; +#endif + + /** @todo can we find out if pLwp is on the console? */ + fRequestor |= VMMDEV_REQUESTOR_CON_DONT_KNOW; + + rc = VGDrvCommonCreateUserSession(&g_DevExt, fRequestor, &fdata->session); + if (RT_SUCCESS(rc)) + { + ASMAtomicIncU32(&cUsers); + return fd_clone(fp, fd, flags, &vboxguest_fileops, fdata); + } + + aprint_error_dev(sc->sc_dev, "VBox session creation failed\n"); + closef(fp); /* ??? */ + error = RTErrConvertToErrno(rc); + } + kmem_free(fdata, sizeof(*fdata)); + } + else + error = ENOMEM; + return error; +} + +/** + * File close handler + * + */ +static int VBoxGuestNetBSDClose(struct file *fp) +{ + struct vboxguest_fdata *fdata = fp->f_data; + vboxguest_softc *sc = fdata->sc; + + LogFlow((DEVICE_NAME ": %s\n", __func__)); + + VGDrvCommonCloseSession(&g_DevExt, fdata->session); + ASMAtomicDecU32(&cUsers); + + kmem_free(fdata, sizeof(*fdata)); + + return 0; +} + +/** + * IOCTL handler + * + */ +static int VBoxGuestNetBSDIOCtl(struct file *fp, u_long command, void *data) +{ + struct vboxguest_fdata *fdata = fp->f_data; + + if (VBGL_IOCTL_IS_FAST(command)) + return VGDrvCommonIoCtlFast(command, &g_DevExt, fdata->session); + + return VBoxGuestNetBSDIOCtlSlow(fdata, command, data); +} + +static int VBoxGuestNetBSDIOCtlSlow(struct vboxguest_fdata *fdata, u_long command, void *data) +{ + vboxguest_softc *sc = fdata->sc; + size_t cbReq = IOCPARM_LEN(command); + PVBGLREQHDR pHdr = NULL; + void *pvUser = NULL; + int err, rc; + + LogFlow(("%s: command=%#lx data=%p\n", __func__, command, data)); + + /* + * Buffered request? + */ + if ((command & IOC_DIRMASK) == IOC_INOUT) + { + /* will be validated by VGDrvCommonIoCtl() */ + pHdr = (PVBGLREQHDR)data; + } + + /* + * Big unbuffered request? "data" is the userland pointer. + */ + else if ((command & IOC_DIRMASK) == IOC_VOID && cbReq != 0) + { + /* + * Read the header, validate it and figure out how much that + * needs to be buffered. + */ + VBGLREQHDR Hdr; + + if (RT_UNLIKELY(cbReq < sizeof(Hdr))) + return ENOTTY; + + pvUser = data; + err = copyin(pvUser, &Hdr, sizeof(Hdr)); + if (RT_UNLIKELY(err != 0)) + return err; + + if (RT_UNLIKELY(Hdr.uVersion != VBGLREQHDR_VERSION)) + return ENOTTY; + + if (cbReq > 16 * _1M) + return EINVAL; + + if (Hdr.cbOut == 0) + Hdr.cbOut = Hdr.cbIn; + + if (RT_UNLIKELY( Hdr.cbIn < sizeof(Hdr) || Hdr.cbIn > cbReq + || Hdr.cbOut < sizeof(Hdr) || Hdr.cbOut > cbReq)) + return EINVAL; + + /* + * Allocate buffer and copy in the data. + */ + cbReq = RT_MAX(Hdr.cbIn, Hdr.cbOut); + + pHdr = (PVBGLREQHDR)RTMemTmpAlloc(cbReq); + if (RT_UNLIKELY(pHdr == NULL)) + { + LogRel(("%s: command=%#lx data=%p: unable to allocate %zu bytes\n", + __func__, command, data, cbReq)); + return ENOMEM; + } + + err = copyin(pvUser, pHdr, Hdr.cbIn); + if (err != 0) + { + RTMemTmpFree(pHdr); + return err; + } + + if (Hdr.cbIn < cbReq) + memset((uint8_t *)pHdr + Hdr.cbIn, '\0', cbReq - Hdr.cbIn); + } + + /* + * Process the IOCtl. + */ + rc = VGDrvCommonIoCtl(command, &g_DevExt, fdata->session, pHdr, cbReq); + if (RT_SUCCESS(rc)) + { + err = 0; + + /* + * If unbuffered, copy back the result before returning. + */ + if (pvUser != NULL) + { + size_t cbOut = pHdr->cbOut; + if (cbOut > cbReq) + { + LogRel(("%s: command=%#lx data=%p: too much output: %zu > %zu\n", + __func__, command, data, cbOut, cbReq)); + cbOut = cbReq; + } + + err = copyout(pHdr, pvUser, cbOut); + RTMemTmpFree(pHdr); + } + } + else + { + LogRel(("%s: command=%#lx data=%p: error %Rrc\n", + __func__, command, data, rc)); + + if (pvUser != NULL) + RTMemTmpFree(pHdr); + + err = RTErrConvertToErrno(rc); + } + + return err; +} + +static int VBoxGuestNetBSDPoll(struct file *fp, int events) +{ + struct vboxguest_fdata *fdata = fp->f_data; + vboxguest_softc *sc = fdata->sc; + + int rc = 0; + int events_processed; + + uint32_t u32CurSeq; + + LogFlow((DEVICE_NAME ": %s\n", __func__)); + + u32CurSeq = ASMAtomicUoReadU32(&g_DevExt.u32MousePosChangedSeq); + if (fdata->session->u32MousePosChangedSeq != u32CurSeq) + { + events_processed = events & (POLLIN | POLLRDNORM); + fdata->session->u32MousePosChangedSeq = u32CurSeq; + } + else + { + events_processed = 0; + + selrecord(curlwp, &g_SelInfo); + } + + return events_processed; +} + + +/** + * @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; +} + + +MODULE(MODULE_CLASS_DRIVER, vboxguest, "pci"); + +/* + * XXX: See netbsd/vboxguest.ioconf for the details. +*/ +#if 0 +#include "ioconf.c" +#else + +static const struct cfiattrdata wsmousedevcf_iattrdata = { + "wsmousedev", 1, { + { "mux", "0", 0 }, + } +}; + +/* device vboxguest: wsmousedev */ +static const struct cfiattrdata * const vboxguest_attrs[] = { &wsmousedevcf_iattrdata, NULL }; +CFDRIVER_DECL(vboxguest, DV_DULL, vboxguest_attrs); + +static struct cfdriver * const cfdriver_ioconf_vboxguest[] = { + &vboxguest_cd, NULL +}; + + +static const struct cfparent vboxguest_pspec = { + "pci", "pci", DVUNIT_ANY +}; +static int vboxguest_loc[] = { -1, -1 }; + + +static const struct cfparent wsmousedev_pspec = { + "wsmousedev", "vboxguest", DVUNIT_ANY +}; +static int wsmousedev_loc[] = { 0 }; + + +static struct cfdata cfdata_ioconf_vboxguest[] = { + /* vboxguest0 at pci? dev ? function ? */ + { + .cf_name = "vboxguest", + .cf_atname = "vboxguest", + .cf_unit = 0, /* Only unit 0 is ever used */ + .cf_fstate = FSTATE_NOTFOUND, + .cf_loc = vboxguest_loc, + .cf_flags = 0, + .cf_pspec = &vboxguest_pspec, + }, + + /* wsmouse* at vboxguest? */ + { "wsmouse", "wsmouse", 0, FSTATE_STAR, wsmousedev_loc, 0, &wsmousedev_pspec }, + + { NULL, NULL, 0, 0, NULL, 0, NULL } +}; + +static struct cfattach * const vboxguest_cfattachinit[] = { + &vboxguest_ca, NULL +}; + +static const struct cfattachinit cfattach_ioconf_vboxguest[] = { + { "vboxguest", vboxguest_cfattachinit }, + { NULL, NULL } +}; +#endif + + +static int +vboxguest_modcmd(modcmd_t cmd, void *opaque) +{ + devmajor_t bmajor, cmajor; +#if !__NetBSD_Prereq__(8,99,46) + register_t retval; +#endif + int error; + + LogFlow((DEVICE_NAME ": %s\n", __func__)); + + switch (cmd) + { + case MODULE_CMD_INIT: + error = config_init_component(cfdriver_ioconf_vboxguest, + cfattach_ioconf_vboxguest, + cfdata_ioconf_vboxguest); + if (error) + break; + + bmajor = cmajor = NODEVMAJOR; + error = devsw_attach("vboxguest", + NULL, &bmajor, + &g_VBoxGuestNetBSDChrDevSW, &cmajor); + if (error) + { + if (error == EEXIST) + error = 0; /* maybe built-in ... improve eventually */ + else + break; + } + + error = do_sys_mknod(curlwp, "/dev/vboxguest", + 0666|S_IFCHR, makedev(cmajor, 0), +#if !__NetBSD_Prereq__(8,99,46) + &retval, +#endif + UIO_SYSSPACE); + if (error == EEXIST) { + error = 0; + + /* + * Since NetBSD doesn't yet have a major reserved for + * vboxguest, the (first free) major we get will + * change when new devices are added, so an existing + * /dev/vboxguest may now point to some other device, + * creating confusion (tripped me up a few times). + */ + aprint_normal("vboxguest: major %d:" + " check existing /dev/vboxguest\n", cmajor); + } + break; + + case MODULE_CMD_FINI: + error = config_fini_component(cfdriver_ioconf_vboxguest, + cfattach_ioconf_vboxguest, + cfdata_ioconf_vboxguest); + if (error) + break; + + devsw_detach(NULL, &g_VBoxGuestNetBSDChrDevSW); + break; + + default: + return ENOTTY; + } + return error; +} |