VBoxGuest-netbsd.c@ 85271

Last change on this file since 85271 was 82968, checked in by vboxsync, 5 years ago
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1	/* $Id: VBoxGuest-netbsd.c 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* VirtualBox Guest Additions Driver for NetBSD.
4	*/
5
6	/*
7	* Copyright (C) 2007-2020 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#include <sys/param.h>
32	#include <sys/systm.h>
33	#include <sys/select.h>
34	#include <sys/conf.h>
35	#include <sys/kernel.h>
36	#include <sys/kmem.h>
37	#include <sys/module.h>
38	#include <sys/device.h>
39	#include <sys/bus.h>
40	#include <sys/poll.h>
41	#include <sys/proc.h>
42	#include <sys/kauth.h>
43	#include <sys/stat.h>
44	#include <sys/selinfo.h>
45	#include <sys/queue.h>
46	#include <sys/lock.h>
47	#include <sys/types.h>
48	#include <sys/conf.h>
49	#include <sys/malloc.h>
50	#include <sys/uio.h>
51	#include <sys/file.h>
52	#include <sys/filedesc.h>
53	#include <sys/vfs_syscalls.h>
54	#include <dev/pci/pcivar.h>
55	#include <dev/pci/pcireg.h>
56	#include <dev/pci/pcidevs.h>
57
58	#include <dev/wscons/wsconsio.h>
59	#include <dev/wscons/wsmousevar.h>
60	#include <dev/wscons/tpcalibvar.h>
61
62	#ifdef PVM
63	# undef PVM
64	#endif
65	#include "VBoxGuestInternal.h"
66	#include <VBox/log.h>
67	#include <iprt/err.h>
68	#include <iprt/assert.h>
69	#include <iprt/initterm.h>
70	#include <iprt/process.h>
71	#include <iprt/mem.h>
72	#include <iprt/asm.h>
73
74
75	/*********************************************************************************************************************************
76	* Defined Constants And Macros *
77	*********************************************************************************************************************************/
78	/** The module name. */
79	#define DEVICE_NAME "vboxguest"
80
81
82	/*********************************************************************************************************************************
83	* Structures and Typedefs *
84	*********************************************************************************************************************************/
85	typedef struct VBoxGuestDeviceState
86	{
87	device_t sc_dev;
88	pci_chipset_tag_t sc_pc;
89
90	bus_space_tag_t sc_iot;
91	bus_space_handle_t sc_ioh;
92	bus_addr_t sc_iobase;
93	bus_size_t sc_iosize;
94
95	bus_space_tag_t sc_memt;
96	bus_space_handle_t sc_memh;
97
98	/** Size of the memory area. */
99	bus_size_t sc_memsize;
100
101	/** IRQ resource handle. */
102	pci_intr_handle_t ih;
103	/** Pointer to the IRQ handler. */
104	void *pfnIrqHandler;
105
106	/** Controller features, limits and status. */
107	u_int vboxguest_state;
108
109	device_t sc_wsmousedev;
110	VMMDevReqMouseStatus *sc_vmmmousereq;
111	PVBOXGUESTSESSION sc_session;
112	struct tpcalib_softc sc_tpcalib;
113	} vboxguest_softc;
114
115
116	struct vboxguest_fdata
117	{
118	vboxguest_softc *sc;
119	PVBOXGUESTSESSION session;
120	};
121
122	#define VBOXGUEST_STATE_INITOK 1 << 0
123
124
125	/*********************************************************************************************************************************
126	* Internal Functions *
127	*********************************************************************************************************************************/
128	/*
129	* Driver(9) autoconf machinery.
130	*/
131	static int VBoxGuestNetBSDMatch(device_t parent, cfdata_t match, void *aux);
132	static void VBoxGuestNetBSDAttach(device_t parent, device_t self, void *aux);
133	static void VBoxGuestNetBSDWsmAttach(vboxguest_softc *sc);
134	static int VBoxGuestNetBSDDetach(device_t self, int flags);
135
136	/*
137	* IRQ related functions.
138	*/
139	static int VBoxGuestNetBSDAddIRQ(vboxguest_softc sc, struct pci_attach_args pa);
140	static void VBoxGuestNetBSDRemoveIRQ(vboxguest_softc *sc);
141	static int VBoxGuestNetBSDISR(void *pvState);
142
143	/*
144	* Character device file handlers.
145	*/
146	static int VBoxGuestNetBSDOpen(dev_t device, int flags, int fmt, struct lwp *process);
147	static int VBoxGuestNetBSDClose(struct file *fp);
148	static int VBoxGuestNetBSDIOCtl(struct file fp, u_long cmd, void addr);
149	static int VBoxGuestNetBSDIOCtlSlow(struct vboxguest_fdata fdata, u_long command, void data);
150	static int VBoxGuestNetBSDPoll(struct file *fp, int events);
151
152	/*
153	* wsmouse(4) accessops
154	*/
155	static int VBoxGuestNetBSDWsmEnable(void *cookie);
156	static void VBoxGuestNetBSDWsmDisable(void *cookie);
157	static int VBoxGuestNetBSDWsmIOCtl(void cookie, u_long cmd, void data, int flag, struct lwp *l);
158
159	static int VBoxGuestNetBSDSetMouseStatus(vboxguest_softc *sc, uint32_t fStatus);
160
161
162	/*********************************************************************************************************************************
163	* Global Variables *
164	*********************************************************************************************************************************/
165	extern struct cfdriver vboxguest_cd; /* CFDRIVER_DECL */
166	extern struct cfattach vboxguest_ca; /* CFATTACH_DECL */
167
168	/*
169	* The /dev/vboxguest character device entry points.
170	*/
171	static struct cdevsw g_VBoxGuestNetBSDChrDevSW =
172	{
173	VBoxGuestNetBSDOpen,
174	noclose,
175	noread,
176	nowrite,
177	noioctl,
178	nostop,
179	notty,
180	nopoll,
181	nommap,
182	nokqfilter,
183	};
184
185	static const struct fileops vboxguest_fileops = {
186	.fo_read = fbadop_read,
187	.fo_write = fbadop_write,
188	.fo_ioctl = VBoxGuestNetBSDIOCtl,
189	.fo_fcntl = fnullop_fcntl,
190	.fo_poll = VBoxGuestNetBSDPoll,
191	.fo_stat = fbadop_stat,
192	.fo_close = VBoxGuestNetBSDClose,
193	.fo_kqfilter = fnullop_kqfilter,
194	.fo_restart = fnullop_restart
195	};
196
197
198	const struct wsmouse_accessops vboxguest_wsm_accessops = {
199	VBoxGuestNetBSDWsmEnable,
200	VBoxGuestNetBSDWsmIOCtl,
201	VBoxGuestNetBSDWsmDisable,
202	};
203
204
205	static struct wsmouse_calibcoords vboxguest_wsm_default_calib = {
206	.minx = VMMDEV_MOUSE_RANGE_MIN,
207	.miny = VMMDEV_MOUSE_RANGE_MIN,
208	.maxx = VMMDEV_MOUSE_RANGE_MAX,
209	.maxy = VMMDEV_MOUSE_RANGE_MAX,
210	.samplelen = WSMOUSE_CALIBCOORDS_RESET,
211	};
212
213	/** Device extention & session data association structure. */
214	static VBOXGUESTDEVEXT g_DevExt;
215
216	static vboxguest_softc *g_SC;
217
218	/** Reference counter */
219	static volatile uint32_t cUsers;
220	/** selinfo structure used for polling. */
221	static struct selinfo g_SelInfo;
222
223
224	CFATTACH_DECL_NEW(vboxguest, sizeof(vboxguest_softc),
225	VBoxGuestNetBSDMatch, VBoxGuestNetBSDAttach, VBoxGuestNetBSDDetach, NULL);
226
227
228	static int VBoxGuestNetBSDMatch(device_t parent, cfdata_t match, void *aux)
229	{
230	const struct pci_attach_args *pa = aux;
231
232	if (RT_UNLIKELY(g_SC != NULL)) /* should not happen */
233	return 0;
234
235	if ( PCI_VENDOR(pa->pa_id) == VMMDEV_VENDORID
236	&& PCI_PRODUCT(pa->pa_id) == VMMDEV_DEVICEID)
237	{
238	return 1;
239	}
240
241	return 0;
242	}
243
244
245	static void VBoxGuestNetBSDAttach(device_t parent, device_t self, void *aux)
246	{
247	int rc = VINF_SUCCESS;
248	int iResId = 0;
249	vboxguest_softc *sc;
250	struct pci_attach_args *pa = aux;
251	bus_space_tag_t iot, memt;
252	bus_space_handle_t ioh, memh;
253	bus_dma_segment_t seg;
254	int ioh_valid, memh_valid;
255
256	KASSERT(g_SC == NULL);
257
258	cUsers = 0;
259
260	aprint_normal(": VirtualBox Guest\n");
261
262	sc = device_private(self);
263	sc->sc_dev = self;
264
265	/*
266	* Initialize IPRT R0 driver, which internally calls OS-specific r0 init.
267	*/
268	rc = RTR0Init(0);
269	if (RT_FAILURE(rc))
270	{
271	LogFunc(("RTR0Init failed.\n"));
272	aprint_error_dev(sc->sc_dev, "RTR0Init failed\n");
273	return;
274	}
275
276	sc->sc_pc = pa->pa_pc;
277
278	/*
279	* Allocate I/O port resource.
280	*/
281	ioh_valid = (pci_mapreg_map(pa, PCI_BAR0,
282	PCI_MAPREG_TYPE_IO, 0,
283	&sc->sc_iot, &sc->sc_ioh,
284	&sc->sc_iobase, &sc->sc_iosize) == 0);
285
286	if (ioh_valid)
287	{
288
289	/*
290	* Map the MMIO region.
291	*/
292	memh_valid = (pci_mapreg_map(pa, PCI_BAR1,
293	PCI_MAPREG_TYPE_MEM, BUS_SPACE_MAP_LINEAR,
294	&sc->sc_memt, &sc->sc_memh,
295	NULL, &sc->sc_memsize) == 0);
296	if (memh_valid)
297	{
298	/*
299	* Call the common device extension initializer.
300	*/
301	rc = VGDrvCommonInitDevExt(&g_DevExt, sc->sc_iobase,
302	bus_space_vaddr(sc->sc_memt, sc->sc_memh),
303	sc->sc_memsize,
304	#if ARCH_BITS == 64
305	VBOXOSTYPE_NetBSD_x64,
306	#else
307	VBOXOSTYPE_NetBSD,
308	#endif
309	VMMDEV_EVENT_MOUSE_POSITION_CHANGED);
310	if (RT_SUCCESS(rc))
311	{
312	/*
313	* Add IRQ of VMMDev.
314	*/
315	rc = VBoxGuestNetBSDAddIRQ(sc, pa);
316	if (RT_SUCCESS(rc))
317	{
318	sc->vboxguest_state \|= VBOXGUEST_STATE_INITOK;
319
320	/*
321	* Read host configuration.
322	*/
323	VGDrvCommonProcessOptionsFromHost(&g_DevExt);
324
325	/*
326	* Attach wsmouse.
327	*/
328	VBoxGuestNetBSDWsmAttach(sc);
329
330	g_SC = sc;
331	return;
332	}
333	VGDrvCommonDeleteDevExt(&g_DevExt);
334	}
335	else
336	{
337	aprint_error_dev(sc->sc_dev, "init failed\n");
338	}
339	bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize);
340	}
341	else
342	{
343	aprint_error_dev(sc->sc_dev, "MMIO mapping failed\n");
344	}
345	bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_iosize);
346	}
347	else
348	{
349	aprint_error_dev(sc->sc_dev, "IO mapping failed\n");
350	}
351
352	RTR0Term();
353	return;
354	}
355
356
357	/**
358	* Sets IRQ for VMMDev.
359	*
360	* @returns NetBSD error code.
361	* @param sc Pointer to the state info structure.
362	* @param pa Pointer to the PCI attach arguments.
363	*/
364	static int VBoxGuestNetBSDAddIRQ(vboxguest_softc sc, struct pci_attach_args pa)
365	{
366	int iResId = 0;
367	int rc = 0;
368	const char *intrstr;
369	#if __NetBSD_Prereq__(6, 99, 39)
370	char intstrbuf[100];
371	#endif
372
373	LogFlow((DEVICE_NAME ": %s\n", __func__));
374
375	if (pci_intr_map(pa, &sc->ih))
376	{
377	aprint_error_dev(sc->sc_dev, "couldn't map interrupt.\n");
378	return VERR_DEV_IO_ERROR;
379	}
380
381	intrstr = pci_intr_string(sc->sc_pc, sc->ih
382	#if __NetBSD_Prereq__(6, 99, 39)
383	, intstrbuf, sizeof(intstrbuf)
384	#endif
385	);
386	aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
387
388	sc->pfnIrqHandler = pci_intr_establish(sc->sc_pc, sc->ih, IPL_BIO, VBoxGuestNetBSDISR, sc);
389	if (sc->pfnIrqHandler == NULL)
390	{
391	aprint_error_dev(sc->sc_dev, "couldn't establish interrupt\n");
392	return VERR_DEV_IO_ERROR;
393	}
394
395	return VINF_SUCCESS;
396	}
397
398
399	/*
400	* Optionally attach wsmouse(4) device as a child.
401	*/
402	static void VBoxGuestNetBSDWsmAttach(vboxguest_softc *sc)
403	{
404	struct wsmousedev_attach_args am = { &vboxguest_wsm_accessops, sc };
405
406	PVBOXGUESTSESSION session = NULL;
407	VMMDevReqMouseStatus *req = NULL;
408	int rc;
409
410	rc = VGDrvCommonCreateKernelSession(&g_DevExt, &session);
411	if (RT_FAILURE(rc))
412	goto fail;
413
414	rc = VbglR0GRAlloc((VMMDevRequestHeader *)&req, sizeof(req),
415	VMMDevReq_GetMouseStatus);
416	if (RT_FAILURE(rc))
417	goto fail;
418
419	sc->sc_wsmousedev = config_found_ia(sc->sc_dev, "wsmousedev", &am, wsmousedevprint);
420	if (sc->sc_wsmousedev == NULL)
421	goto fail;
422
423	sc->sc_session = session;
424	sc->sc_vmmmousereq = req;
425
426	tpcalib_init(&sc->sc_tpcalib);
427	tpcalib_ioctl(&sc->sc_tpcalib, WSMOUSEIO_SCALIBCOORDS,
428	&vboxguest_wsm_default_calib, 0, 0);
429	return;
430
431	fail:
432	if (session != NULL)
433	VGDrvCommonCloseSession(&g_DevExt, session);
434	if (req != NULL)
435	VbglR0GRFree((VMMDevRequestHeader *)req);
436	}
437
438
439	static int VBoxGuestNetBSDDetach(device_t self, int flags)
440	{
441	vboxguest_softc *sc;
442	sc = device_private(self);
443
444	LogFlow((DEVICE_NAME ": %s\n", __func__));
445
446	if (cUsers > 0)
447	return EBUSY;
448
449	if ((sc->vboxguest_state & VBOXGUEST_STATE_INITOK) == 0)
450	return 0;
451
452	/*
453	* Reverse what we did in VBoxGuestNetBSDAttach.
454	*/
455	if (sc->sc_vmmmousereq != NULL)
456	VbglR0GRFree((VMMDevRequestHeader *)sc->sc_vmmmousereq);
457
458	VBoxGuestNetBSDRemoveIRQ(sc);
459
460	VGDrvCommonDeleteDevExt(&g_DevExt);
461
462	bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize);
463	bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_iosize);
464
465	RTR0Term();
466
467	return config_detach_children(self, flags);
468	}
469
470
471	/**
472	* Removes IRQ for VMMDev.
473	*
474	* @param sc Opaque pointer to the state info structure.
475	*/
476	static void VBoxGuestNetBSDRemoveIRQ(vboxguest_softc *sc)
477	{
478	LogFlow((DEVICE_NAME ": %s\n", __func__));
479
480	if (sc->pfnIrqHandler)
481	{
482	pci_intr_disestablish(sc->sc_pc, sc->pfnIrqHandler);
483	}
484	}
485
486
487	/**
488	* Interrupt service routine.
489	*
490	* @returns Whether the interrupt was from VMMDev.
491	* @param pvState Opaque pointer to the device state.
492	*/
493	static int VBoxGuestNetBSDISR(void *pvState)
494	{
495	LogFlow((DEVICE_NAME ": %s: pvState=%p\n", __func__, pvState));
496
497	bool fOurIRQ = VGDrvCommonISR(&g_DevExt);
498
499	return fOurIRQ ? 1 : 0;
500	}
501
502
503	/*
504	* Called by VGDrvCommonISR() if mouse position changed
505	*/
506	void VGDrvNativeISRMousePollEvent(PVBOXGUESTDEVEXT pDevExt)
507	{
508	vboxguest_softc *sc = g_SC;
509
510	LogFlow((DEVICE_NAME ": %s\n", __func__));
511
512	/*
513	* Wake up poll waiters.
514	*/
515	selnotify(&g_SelInfo, 0, 0);
516
517	if (sc->sc_vmmmousereq != NULL) {
518	int x, y;
519	int rc;
520
521	sc->sc_vmmmousereq->mouseFeatures = 0;
522	sc->sc_vmmmousereq->pointerXPos = 0;
523	sc->sc_vmmmousereq->pointerYPos = 0;
524
525	rc = VbglR0GRPerform(&sc->sc_vmmmousereq->header);
526	if (RT_FAILURE(rc))
527	return;
528
529	tpcalib_trans(&sc->sc_tpcalib,
530	sc->sc_vmmmousereq->pointerXPos,
531	sc->sc_vmmmousereq->pointerYPos,
532	&x, &y);
533
534	wsmouse_input(sc->sc_wsmousedev,
535	0, /* buttons */
536	x, y,
537	0, 0, /* z, w */
538	WSMOUSE_INPUT_ABSOLUTE_X \| WSMOUSE_INPUT_ABSOLUTE_Y);
539	}
540	}
541
542
543	bool VGDrvNativeProcessOption(PVBOXGUESTDEVEXT pDevExt, const char pszName, const char pszValue)
544	{
545	RT_NOREF(pDevExt); RT_NOREF(pszName); RT_NOREF(pszValue);
546	return false;
547	}
548
549
550	static int VBoxGuestNetBSDSetMouseStatus(vboxguest_softc *sc, uint32_t fStatus)
551	{
552	VBGLIOCSETMOUSESTATUS Req;
553	int rc;
554
555	VBGLREQHDR_INIT(&Req.Hdr, SET_MOUSE_STATUS);
556	Req.u.In.fStatus = fStatus;
557	rc = VGDrvCommonIoCtl(VBGL_IOCTL_SET_MOUSE_STATUS,
558	&g_DevExt,
559	sc->sc_session,
560	&Req.Hdr, sizeof(Req));
561	if (RT_SUCCESS(rc))
562	rc = Req.Hdr.rc;
563
564	return rc;
565	}
566
567
568	static int
569	VBoxGuestNetBSDWsmEnable(void *cookie)
570	{
571	vboxguest_softc *sc = cookie;
572	int rc;
573
574	rc = VBoxGuestNetBSDSetMouseStatus(sc, VMMDEV_MOUSE_GUEST_CAN_ABSOLUTE
575	\| VMMDEV_MOUSE_NEW_PROTOCOL);
576	if (RT_FAILURE(rc))
577	return RTErrConvertToErrno(rc);
578
579	return 0;
580	}
581
582
583	static void
584	VBoxGuestNetBSDWsmDisable(void *cookie)
585	{
586	vboxguest_softc *sc = cookie;
587	VBoxGuestNetBSDSetMouseStatus(sc, 0);
588	}
589
590
591	static int
592	VBoxGuestNetBSDWsmIOCtl(void cookie, u_long cmd, void data, int flag, struct lwp *l)
593	{
594	vboxguest_softc *sc = cookie;
595
596	switch (cmd) {
597	case WSMOUSEIO_GTYPE:
598	(u_int )data = WSMOUSE_TYPE_TPANEL;
599	break;
600
601	case WSMOUSEIO_SCALIBCOORDS:
602	case WSMOUSEIO_GCALIBCOORDS:
603	return tpcalib_ioctl(&sc->sc_tpcalib, cmd, data, flag, l);
604
605	default:
606	return EPASSTHROUGH;
607	}
608	return 0;
609	}
610
611
612	/**
613	* File open handler
614	*
615	*/
616	static int VBoxGuestNetBSDOpen(dev_t device, int flags, int fmt, struct lwp *pLwp)
617	{
618	vboxguest_softc *sc;
619	struct vboxguest_fdata *fdata;
620	file_t *fp;
621	int fd, error;
622
623	LogFlow((DEVICE_NAME ": %s\n", __func__));
624
625	if ((sc = device_lookup_private(&vboxguest_cd, minor(device))) == NULL)
626	{
627	printf("device_lookup_private failed\n");
628	return (ENXIO);
629	}
630
631	if ((sc->vboxguest_state & VBOXGUEST_STATE_INITOK) == 0)
632	{
633	aprint_error_dev(sc->sc_dev, "device not configured\n");
634	return (ENXIO);
635	}
636
637	fdata = kmem_alloc(sizeof(*fdata), KM_SLEEP);
638	if (fdata != NULL)
639	{
640	fdata->sc = sc;
641
642	error = fd_allocfile(&fp, &fd);
643	if (error == 0)
644	{
645	/*
646	* Create a new session.
647	*/
648	struct kauth_cred *pCred = pLwp->l_cred;
649	int fHaveCred = (pCred != NULL && pCred != NOCRED && pCred != FSCRED);
650	uint32_t fRequestor;
651	int fIsWheel;
652	int rc;
653
654	fRequestor = VMMDEV_REQUESTOR_USERMODE \| VMMDEV_REQUESTOR_TRUST_NOT_GIVEN;
655
656	/* uid */
657	if (fHaveCred && kauth_cred_geteuid(pCred) == (uid_t)0)
658	fRequestor \|= VMMDEV_REQUESTOR_USR_ROOT;
659	else
660	fRequestor \|= VMMDEV_REQUESTOR_USR_USER;
661
662	/* gid */
663	if (fHaveCred
664	&& (kauth_cred_getegid(pCred) == (gid_t)0
665	\|\| (kauth_cred_ismember_gid(pCred, 0, &fIsWheel) == 0
666	&& fIsWheel)))
667	fRequestor \|= VMMDEV_REQUESTOR_GRP_WHEEL;
668
669	#if 0 /** @todo implement /dev/vboxuser */
670	if (!fUnrestricted)
671	fRequestor \|= VMMDEV_REQUESTOR_USER_DEVICE;
672	#else
673	fRequestor \|= VMMDEV_REQUESTOR_NO_USER_DEVICE;
674	#endif
675
676	/** @todo can we find out if pLwp is on the console? */
677	fRequestor \|= VMMDEV_REQUESTOR_CON_DONT_KNOW;
678
679	rc = VGDrvCommonCreateUserSession(&g_DevExt, fRequestor, &fdata->session);
680	if (RT_SUCCESS(rc))
681	{
682	ASMAtomicIncU32(&cUsers);
683	return fd_clone(fp, fd, flags, &vboxguest_fileops, fdata);
684	}
685
686	aprint_error_dev(sc->sc_dev, "VBox session creation failed\n");
687	closef(fp); /* ??? */
688	error = RTErrConvertToErrno(rc);
689	}
690	kmem_free(fdata, sizeof(*fdata));
691	}
692	else
693	error = ENOMEM;
694	return error;
695	}
696
697	/**
698	* File close handler
699	*
700	*/
701	static int VBoxGuestNetBSDClose(struct file *fp)
702	{
703	struct vboxguest_fdata *fdata = fp->f_data;
704	vboxguest_softc *sc = fdata->sc;
705
706	LogFlow((DEVICE_NAME ": %s\n", __func__));
707
708	VGDrvCommonCloseSession(&g_DevExt, fdata->session);
709	ASMAtomicDecU32(&cUsers);
710
711	kmem_free(fdata, sizeof(*fdata));
712
713	return 0;
714	}
715
716	/**
717	* IOCTL handler
718	*
719	*/
720	static int VBoxGuestNetBSDIOCtl(struct file fp, u_long command, void data)
721	{
722	struct vboxguest_fdata *fdata = fp->f_data;
723
724	if (VBGL_IOCTL_IS_FAST(command))
725	return VGDrvCommonIoCtlFast(command, &g_DevExt, fdata->session);
726
727	return VBoxGuestNetBSDIOCtlSlow(fdata, command, data);
728	}
729
730	static int VBoxGuestNetBSDIOCtlSlow(struct vboxguest_fdata fdata, u_long command, void data)
731	{
732	vboxguest_softc *sc = fdata->sc;
733	size_t cbReq = IOCPARM_LEN(command);
734	PVBGLREQHDR pHdr = NULL;
735	void *pvUser = NULL;
736	int err, rc;
737
738	LogFlow(("%s: command=%#lx data=%p\n", __func__, command, data));
739
740	/*
741	* Buffered request?
742	*/
743	if ((command & IOC_DIRMASK) == IOC_INOUT)
744	{
745	/* will be validated by VGDrvCommonIoCtl() */
746	pHdr = (PVBGLREQHDR)data;
747	}
748
749	/*
750	* Big unbuffered request? "data" is the userland pointer.
751	*/
752	else if ((command & IOC_DIRMASK) == IOC_VOID && cbReq != 0)
753	{
754	/*
755	* Read the header, validate it and figure out how much that
756	* needs to be buffered.
757	*/
758	VBGLREQHDR Hdr;
759
760	if (RT_UNLIKELY(cbReq < sizeof(Hdr)))
761	return ENOTTY;
762
763	pvUser = data;
764	err = copyin(pvUser, &Hdr, sizeof(Hdr));
765	if (RT_UNLIKELY(err != 0))
766	return err;
767
768	if (RT_UNLIKELY(Hdr.uVersion != VBGLREQHDR_VERSION))
769	return ENOTTY;
770
771	if (cbReq > 16 * _1M)
772	return EINVAL;
773
774	if (Hdr.cbOut == 0)
775	Hdr.cbOut = Hdr.cbIn;
776
777	if (RT_UNLIKELY( Hdr.cbIn < sizeof(Hdr) \|\| Hdr.cbIn > cbReq
778	\|\| Hdr.cbOut < sizeof(Hdr) \|\| Hdr.cbOut > cbReq))
779	return EINVAL;
780
781	/*
782	* Allocate buffer and copy in the data.
783	*/
784	cbReq = RT_MAX(Hdr.cbIn, Hdr.cbOut);
785
786	pHdr = (PVBGLREQHDR)RTMemTmpAlloc(cbReq);
787	if (RT_UNLIKELY(pHdr == NULL))
788	{
789	LogRel(("%s: command=%#lx data=%p: unable to allocate %zu bytes\n",
790	__func__, command, data, cbReq));
791	return ENOMEM;
792	}
793
794	err = copyin(pvUser, pHdr, Hdr.cbIn);
795	if (err != 0)
796	{
797	RTMemTmpFree(pHdr);
798	return err;
799	}
800
801	if (Hdr.cbIn < cbReq)
802	memset((uint8_t *)pHdr + Hdr.cbIn, '\0', cbReq - Hdr.cbIn);
803	}
804
805	/*
806	* Process the IOCtl.
807	*/
808	rc = VGDrvCommonIoCtl(command, &g_DevExt, fdata->session, pHdr, cbReq);
809	if (RT_SUCCESS(rc))
810	{
811	err = 0;
812
813	/*
814	* If unbuffered, copy back the result before returning.
815	*/
816	if (pvUser != NULL)
817	{
818	size_t cbOut = pHdr->cbOut;
819	if (cbOut > cbReq)
820	{
821	LogRel(("%s: command=%#lx data=%p: too much output: %zu > %zu\n",
822	__func__, command, data, cbOut, cbReq));
823	cbOut = cbReq;
824	}
825
826	err = copyout(pHdr, pvUser, cbOut);
827	RTMemTmpFree(pHdr);
828	}
829	}
830	else
831	{
832	LogRel(("%s: command=%#lx data=%p: error %Rrc\n",
833	__func__, command, data, rc));
834
835	if (pvUser != NULL)
836	RTMemTmpFree(pHdr);
837
838	err = RTErrConvertToErrno(rc);
839	}
840
841	return err;
842	}
843
844	static int VBoxGuestNetBSDPoll(struct file *fp, int events)
845	{
846	struct vboxguest_fdata *fdata = fp->f_data;
847	vboxguest_softc *sc = fdata->sc;
848
849	int rc = 0;
850	int events_processed;
851
852	uint32_t u32CurSeq;
853
854	LogFlow((DEVICE_NAME ": %s\n", __func__));
855
856	u32CurSeq = ASMAtomicUoReadU32(&g_DevExt.u32MousePosChangedSeq);
857	if (fdata->session->u32MousePosChangedSeq != u32CurSeq)
858	{
859	events_processed = events & (POLLIN \| POLLRDNORM);
860	fdata->session->u32MousePosChangedSeq = u32CurSeq;
861	}
862	else
863	{
864	events_processed = 0;
865
866	selrecord(curlwp, &g_SelInfo);
867	}
868
869	return events_processed;
870	}
871
872
873	/**
874	* @note This code is duplicated on other platforms with variations, so please
875	* keep them all up to date when making changes!
876	*/
877	int VBOXCALL VBoxGuestIDC(void *pvSession, uintptr_t uReq, PVBGLREQHDR pReqHdr, size_t cbReq)
878	{
879	/*
880	* Simple request validation (common code does the rest).
881	*/
882	int rc;
883	if ( RT_VALID_PTR(pReqHdr)
884	&& cbReq >= sizeof(*pReqHdr))
885	{
886	/*
887	* All requests except the connect one requires a valid session.
888	*/
889	PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)pvSession;
890	if (pSession)
891	{
892	if ( RT_VALID_PTR(pSession)
893	&& pSession->pDevExt == &g_DevExt)
894	rc = VGDrvCommonIoCtl(uReq, &g_DevExt, pSession, pReqHdr, cbReq);
895	else
896	rc = VERR_INVALID_HANDLE;
897	}
898	else if (uReq == VBGL_IOCTL_IDC_CONNECT)
899	{
900	rc = VGDrvCommonCreateKernelSession(&g_DevExt, &pSession);
901	if (RT_SUCCESS(rc))
902	{
903	rc = VGDrvCommonIoCtl(uReq, &g_DevExt, pSession, pReqHdr, cbReq);
904	if (RT_FAILURE(rc))
905	VGDrvCommonCloseSession(&g_DevExt, pSession);
906	}
907	}
908	else
909	rc = VERR_INVALID_HANDLE;
910	}
911	else
912	rc = VERR_INVALID_POINTER;
913	return rc;
914	}
915
916
917	MODULE(MODULE_CLASS_DRIVER, vboxguest, "pci");
918
919	/*
920	* XXX: See netbsd/vboxguest.ioconf for the details.
921	*/
922	#if 0
923	#include "ioconf.c"
924	#else
925
926	static const struct cfiattrdata wsmousedevcf_iattrdata = {
927	"wsmousedev", 1, {
928	{ "mux", "0", 0 },
929	}
930	};
931
932	/* device vboxguest: wsmousedev */
933	static const struct cfiattrdata * const vboxguest_attrs[] = { &wsmousedevcf_iattrdata, NULL };
934	CFDRIVER_DECL(vboxguest, DV_DULL, vboxguest_attrs);
935
936	static struct cfdriver * const cfdriver_ioconf_vboxguest[] = {
937	&vboxguest_cd, NULL
938	};
939
940
941	static const struct cfparent vboxguest_pspec = {
942	"pci", "pci", DVUNIT_ANY
943	};
944	static int vboxguest_loc[] = { -1, -1 };
945
946
947	static const struct cfparent wsmousedev_pspec = {
948	"wsmousedev", "vboxguest", DVUNIT_ANY
949	};
950	static int wsmousedev_loc[] = { 0 };
951
952
953	static struct cfdata cfdata_ioconf_vboxguest[] = {
954	/* vboxguest0 at pci? dev ? function ? */
955	{
956	.cf_name = "vboxguest",
957	.cf_atname = "vboxguest",
958	.cf_unit = 0, /* Only unit 0 is ever used */
959	.cf_fstate = FSTATE_NOTFOUND,
960	.cf_loc = vboxguest_loc,
961	.cf_flags = 0,
962	.cf_pspec = &vboxguest_pspec,
963	},
964
965	/* wsmouse* at vboxguest? */
966	{ "wsmouse", "wsmouse", 0, FSTATE_STAR, wsmousedev_loc, 0, &wsmousedev_pspec },
967
968	{ NULL, NULL, 0, 0, NULL, 0, NULL }
969	};
970
971	static struct cfattach * const vboxguest_cfattachinit[] = {
972	&vboxguest_ca, NULL
973	};
974
975	static const struct cfattachinit cfattach_ioconf_vboxguest[] = {
976	{ "vboxguest", vboxguest_cfattachinit },
977	{ NULL, NULL }
978	};
979	#endif
980
981
982	static int
983	vboxguest_modcmd(modcmd_t cmd, void *opaque)
984	{
985	devmajor_t bmajor, cmajor;
986	#if !__NetBSD_Prereq__(8,99,46)
987	register_t retval;
988	#endif
989	int error;
990
991	LogFlow((DEVICE_NAME ": %s\n", __func__));
992
993	switch (cmd)
994	{
995	case MODULE_CMD_INIT:
996	error = config_init_component(cfdriver_ioconf_vboxguest,
997	cfattach_ioconf_vboxguest,
998	cfdata_ioconf_vboxguest);
999	if (error)
1000	break;
1001
1002	bmajor = cmajor = NODEVMAJOR;
1003	error = devsw_attach("vboxguest",
1004	NULL, &bmajor,
1005	&g_VBoxGuestNetBSDChrDevSW, &cmajor);
1006	if (error)
1007	{
1008	if (error == EEXIST)
1009	error = 0; /* maybe built-in ... improve eventually */
1010	else
1011	break;
1012	}
1013
1014	error = do_sys_mknod(curlwp, "/dev/vboxguest",
1015	0666\|S_IFCHR, makedev(cmajor, 0),
1016	#if !__NetBSD_Prereq__(8,99,46)
1017	&retval,
1018	#endif
1019	UIO_SYSSPACE);
1020	if (error == EEXIST)
1021	error = 0;
1022	break;
1023
1024	case MODULE_CMD_FINI:
1025	error = config_fini_component(cfdriver_ioconf_vboxguest,
1026	cfattach_ioconf_vboxguest,
1027	cfdata_ioconf_vboxguest);
1028	if (error)
1029	break;
1030
1031	devsw_detach(NULL, &g_VBoxGuestNetBSDChrDevSW);
1032	break;
1033
1034	default:
1035	return ENOTTY;
1036	}
1037	return error;
1038	}

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source: vbox/trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-netbsd.c@ 85271

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