VBoxGuest-netbsd.c@ 70066

Last change on this file since 70066 was 70066, checked in by vboxsync, 7 years ago
VBoxGuest: Enabled VGDrvCommonProcessOptionsFromHost for all but linux and freebsd.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 26.4 KB

Line
1	/* $Id: VBoxGuest-netbsd.c 70066 2017-12-11 16:33:05Z vboxsync $ */
2	/** @file
3	* VirtualBox Guest Additions Driver for NetBSD.
4	*/
5
6	/*
7	* Copyright (C) 2007-2017 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.215389.xyz. 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/stat.h>
43	#include <sys/selinfo.h>
44	#include <sys/queue.h>
45	#include <sys/lock.h>
46	#include <sys/types.h>
47	#include <sys/conf.h>
48	#include <sys/malloc.h>
49	#include <sys/uio.h>
50	#include <sys/file.h>
51	#include <sys/filedesc.h>
52	#include <sys/vfs_syscalls.h>
53	#include <dev/pci/pcivar.h>
54	#include <dev/pci/pcireg.h>
55	#include <dev/pci/pcidevs.h>
56
57	#include <dev/wscons/wsconsio.h>
58	#include <dev/wscons/wsmousevar.h>
59	#include <dev/wscons/tpcalibvar.h>
60
61	#ifdef PVM
62	# undef PVM
63	#endif
64	#include "VBoxGuestInternal.h"
65	#include <VBox/log.h>
66	#include <iprt/assert.h>
67	#include <iprt/initterm.h>
68	#include <iprt/process.h>
69	#include <iprt/mem.h>
70	#include <iprt/asm.h>
71
72
73	/*********************************************************************************************************************************
74	* Defined Constants And Macros *
75	*********************************************************************************************************************************/
76	/** The module name. */
77	#define DEVICE_NAME "vboxguest"
78
79
80	/*********************************************************************************************************************************
81	* Structures and Typedefs *
82	*********************************************************************************************************************************/
83	typedef struct VBoxGuestDeviceState
84	{
85	device_t sc_dev;
86	pci_chipset_tag_t sc_pc;
87
88	bus_space_tag_t sc_iot;
89	bus_space_handle_t sc_ioh;
90	bus_addr_t sc_iobase;
91	bus_size_t sc_iosize;
92
93	bus_space_tag_t sc_memt;
94	bus_space_handle_t sc_memh;
95
96	/** Size of the memory area. */
97	bus_size_t sc_memsize;
98
99	/** IRQ resource handle. */
100	pci_intr_handle_t ih;
101	/** Pointer to the IRQ handler. */
102	void *pfnIrqHandler;
103
104	/** Controller features, limits and status. */
105	u_int vboxguest_state;
106
107	device_t sc_wsmousedev;
108	VMMDevReqMouseStatus *sc_vmmmousereq;
109	PVBOXGUESTSESSION sc_session;
110	struct tpcalib_softc sc_tpcalib;
111	} vboxguest_softc;
112
113
114	struct vboxguest_fdata
115	{
116	vboxguest_softc *sc;
117	PVBOXGUESTSESSION session;
118	};
119
120	#define VBOXGUEST_STATE_INITOK 1 << 0
121
122
123	/*********************************************************************************************************************************
124	* Internal Functions *
125	*********************************************************************************************************************************/
126	/*
127	* Driver(9) autoconf machinery.
128	*/
129	static int VBoxGuestNetBSDMatch(device_t parent, cfdata_t match, void *aux);
130	static void VBoxGuestNetBSDAttach(device_t parent, device_t self, void *aux);
131	static void VBoxGuestNetBSDWsmAttach(vboxguest_softc *sc);
132	static int VBoxGuestNetBSDDetach(device_t self, int flags);
133
134	/*
135	* IRQ related functions.
136	*/
137	static int VBoxGuestNetBSDAddIRQ(vboxguest_softc sc, struct pci_attach_args pa);
138	static void VBoxGuestNetBSDRemoveIRQ(vboxguest_softc *sc);
139	static int VBoxGuestNetBSDISR(void *pvState);
140
141	/*
142	* Character device file handlers.
143	*/
144	static int VBoxGuestNetBSDOpen(dev_t device, int flags, int fmt, struct lwp *process);
145	static int VBoxGuestNetBSDClose(struct file *fp);
146	static int VBoxGuestNetBSDIOCtl(struct file fp, u_long cmd, void addr);
147	static int VBoxGuestNetBSDIOCtlSlow(struct vboxguest_fdata fdata, u_long command, void data);
148	static int VBoxGuestNetBSDPoll(struct file *fp, int events);
149
150	/*
151	* wsmouse(4) accessops
152	*/
153	static int VBoxGuestNetBSDWsmEnable(void *cookie);
154	static void VBoxGuestNetBSDWsmDisable(void *cookie);
155	static int VBoxGuestNetBSDWsmIOCtl(void cookie, u_long cmd, void data, int flag, struct lwp *l);
156
157	static int VBoxGuestNetBSDSetMouseStatus(vboxguest_softc *sc, uint32_t fStatus);
158
159
160	/*********************************************************************************************************************************
161	* Global Variables *
162	*********************************************************************************************************************************/
163	extern struct cfdriver vboxguest_cd; /* CFDRIVER_DECL */
164	extern struct cfattach vboxguest_ca; /* CFATTACH_DECL */
165
166	/*
167	* The /dev/vboxguest character device entry points.
168	*/
169	static struct cdevsw g_VBoxGuestNetBSDChrDevSW =
170	{
171	VBoxGuestNetBSDOpen,
172	noclose,
173	noread,
174	nowrite,
175	noioctl,
176	nostop,
177	notty,
178	nopoll,
179	nommap,
180	nokqfilter,
181	};
182
183	static const struct fileops vboxguest_fileops = {
184	.fo_read = fbadop_read,
185	.fo_write = fbadop_write,
186	.fo_ioctl = VBoxGuestNetBSDIOCtl,
187	.fo_fcntl = fnullop_fcntl,
188	.fo_poll = VBoxGuestNetBSDPoll,
189	.fo_stat = fbadop_stat,
190	.fo_close = VBoxGuestNetBSDClose,
191	.fo_kqfilter = fnullop_kqfilter,
192	.fo_restart = fnullop_restart
193	};
194
195
196	const struct wsmouse_accessops vboxguest_wsm_accessops = {
197	VBoxGuestNetBSDWsmEnable,
198	VBoxGuestNetBSDWsmIOCtl,
199	VBoxGuestNetBSDWsmDisable,
200	};
201
202
203	static struct wsmouse_calibcoords vboxguest_wsm_default_calib = {
204	.minx = VMMDEV_MOUSE_RANGE_MIN,
205	.miny = VMMDEV_MOUSE_RANGE_MIN,
206	.maxx = VMMDEV_MOUSE_RANGE_MAX,
207	.maxy = VMMDEV_MOUSE_RANGE_MAX,
208	.samplelen = WSMOUSE_CALIBCOORDS_RESET,
209	};
210
211	/** Device extention & session data association structure. */
212	static VBOXGUESTDEVEXT g_DevExt;
213
214	static vboxguest_softc *g_SC;
215
216	/** Reference counter */
217	static volatile uint32_t cUsers;
218	/** selinfo structure used for polling. */
219	static struct selinfo g_SelInfo;
220
221
222	CFATTACH_DECL_NEW(vboxguest, sizeof(vboxguest_softc),
223	VBoxGuestNetBSDMatch, VBoxGuestNetBSDAttach, VBoxGuestNetBSDDetach, NULL);
224
225
226	static int VBoxGuestNetBSDMatch(device_t parent, cfdata_t match, void *aux)
227	{
228	const struct pci_attach_args *pa = aux;
229
230	if (RT_UNLIKELY(g_SC != NULL)) /* should not happen */
231	return 0;
232
233	if ( PCI_VENDOR(pa->pa_id) == VMMDEV_VENDORID
234	&& PCI_PRODUCT(pa->pa_id) == VMMDEV_DEVICEID)
235	{
236	return 1;
237	}
238
239	return 0;
240	}
241
242
243	static void VBoxGuestNetBSDAttach(device_t parent, device_t self, void *aux)
244	{
245	int rc = VINF_SUCCESS;
246	int iResId = 0;
247	vboxguest_softc *sc;
248	struct pci_attach_args *pa = aux;
249	bus_space_tag_t iot, memt;
250	bus_space_handle_t ioh, memh;
251	bus_dma_segment_t seg;
252	int ioh_valid, memh_valid;
253
254	KASSERT(g_SC == NULL);
255
256	cUsers = 0;
257
258	aprint_normal(": VirtualBox Guest\n");
259
260	sc = device_private(self);
261	sc->sc_dev = self;
262
263	/*
264	* Initialize IPRT R0 driver, which internally calls OS-specific r0 init.
265	*/
266	rc = RTR0Init(0);
267	if (RT_FAILURE(rc))
268	{
269	LogFunc(("RTR0Init failed.\n"));
270	aprint_error_dev(sc->sc_dev, "RTR0Init failed\n");
271	return;
272	}
273
274	sc->sc_pc = pa->pa_pc;
275
276	/*
277	* Allocate I/O port resource.
278	*/
279	ioh_valid = (pci_mapreg_map(pa, PCI_BAR0,
280	PCI_MAPREG_TYPE_IO, 0,
281	&sc->sc_iot, &sc->sc_ioh,
282	&sc->sc_iobase, &sc->sc_iosize) == 0);
283
284	if (ioh_valid)
285	{
286
287	/*
288	* Map the MMIO region.
289	*/
290	memh_valid = (pci_mapreg_map(pa, PCI_BAR1,
291	PCI_MAPREG_TYPE_MEM, BUS_SPACE_MAP_LINEAR,
292	&sc->sc_memt, &sc->sc_memh,
293	NULL, &sc->sc_memsize) == 0);
294	if (memh_valid)
295	{
296	/*
297	* Call the common device extension initializer.
298	*/
299	rc = VGDrvCommonInitDevExt(&g_DevExt, sc->sc_iobase,
300	bus_space_vaddr(sc->sc_memt, sc->sc_memh),
301	sc->sc_memsize,
302	#if ARCH_BITS == 64
303	VBOXOSTYPE_NetBSD_x64,
304	#else
305	VBOXOSTYPE_NetBSD,
306	#endif
307	VMMDEV_EVENT_MOUSE_POSITION_CHANGED);
308	if (RT_SUCCESS(rc))
309	{
310	/*
311	* Add IRQ of VMMDev.
312	*/
313	rc = VBoxGuestNetBSDAddIRQ(sc, pa);
314	if (RT_SUCCESS(rc))
315	{
316	sc->vboxguest_state \|= VBOXGUEST_STATE_INITOK;
317	VBoxGuestNetBSDWsmAttach(sc);
318
319	g_SC = sc;
320	return;
321	}
322	VGDrvCommonDeleteDevExt(&g_DevExt);
323	}
324	else
325	{
326	aprint_error_dev(sc->sc_dev, "init failed\n");
327	}
328	bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize);
329	}
330	else
331	{
332	aprint_error_dev(sc->sc_dev, "MMIO mapping failed\n");
333	}
334	bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_iosize);
335	}
336	else
337	{
338	aprint_error_dev(sc->sc_dev, "IO mapping failed\n");
339	}
340
341	RTR0Term();
342	return;
343	}
344
345
346	/**
347	* Sets IRQ for VMMDev.
348	*
349	* @returns NetBSD error code.
350	* @param sc Pointer to the state info structure.
351	* @param pa Pointer to the PCI attach arguments.
352	*/
353	static int VBoxGuestNetBSDAddIRQ(vboxguest_softc sc, struct pci_attach_args pa)
354	{
355	int iResId = 0;
356	int rc = 0;
357	const char *intrstr;
358	#if __NetBSD_Prereq__(6, 99, 39)
359	char intstrbuf[100];
360	#endif
361
362	LogFlow((DEVICE_NAME ": %s\n", __func__));
363
364	if (pci_intr_map(pa, &sc->ih))
365	{
366	aprint_error_dev(sc->sc_dev, "couldn't map interrupt.\n");
367	return VERR_DEV_IO_ERROR;
368	}
369
370	intrstr = pci_intr_string(sc->sc_pc, sc->ih
371	#if __NetBSD_Prereq__(6, 99, 39)
372	, intstrbuf, sizeof(intstrbuf)
373	#endif
374	);
375	aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
376
377	sc->pfnIrqHandler = pci_intr_establish(sc->sc_pc, sc->ih, IPL_BIO, VBoxGuestNetBSDISR, sc);
378	if (sc->pfnIrqHandler == NULL)
379	{
380	aprint_error_dev(sc->sc_dev, "couldn't establish interrupt\n");
381	return VERR_DEV_IO_ERROR;
382	}
383
384	return VINF_SUCCESS;
385	}
386
387
388	/*
389	* Optionally attach wsmouse(4) device as a child.
390	*/
391	static void VBoxGuestNetBSDWsmAttach(vboxguest_softc *sc)
392	{
393	struct wsmousedev_attach_args am = { &vboxguest_wsm_accessops, sc };
394
395	PVBOXGUESTSESSION session = NULL;
396	VMMDevReqMouseStatus *req = NULL;
397	int rc;
398
399	rc = VGDrvCommonCreateKernelSession(&g_DevExt, &session);
400	if (RT_FAILURE(rc))
401	goto fail;
402
403	rc = VbglR0GRAlloc((VMMDevRequestHeader *)&req, sizeof(req),
404	VMMDevReq_GetMouseStatus);
405	if (RT_FAILURE(rc))
406	goto fail;
407
408	sc->sc_wsmousedev = config_found_ia(sc->sc_dev, "wsmousedev", &am, wsmousedevprint);
409	if (sc->sc_wsmousedev == NULL)
410	goto fail;
411
412	sc->sc_session = session;
413	sc->sc_vmmmousereq = req;
414
415	tpcalib_init(&sc->sc_tpcalib);
416	tpcalib_ioctl(&sc->sc_tpcalib, WSMOUSEIO_SCALIBCOORDS,
417	&vboxguest_wsm_default_calib, 0, 0);
418	return;
419
420	fail:
421	if (session != NULL)
422	VGDrvCommonCloseSession(&g_DevExt, session);
423	if (req != NULL)
424	VbglR0GRFree((VMMDevRequestHeader *)req);
425	}
426
427
428	static int VBoxGuestNetBSDDetach(device_t self, int flags)
429	{
430	vboxguest_softc *sc;
431	sc = device_private(self);
432
433	LogFlow((DEVICE_NAME ": %s\n", __func__));
434
435	if (cUsers > 0)
436	return EBUSY;
437
438	if ((sc->vboxguest_state & VBOXGUEST_STATE_INITOK) == 0)
439	return 0;
440
441	/*
442	* Reverse what we did in VBoxGuestNetBSDAttach.
443	*/
444	if (sc->sc_vmmmousereq != NULL)
445	VbglR0GRFree((VMMDevRequestHeader *)sc->sc_vmmmousereq);
446
447	VBoxGuestNetBSDRemoveIRQ(sc);
448
449	VGDrvCommonDeleteDevExt(&g_DevExt);
450
451	bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize);
452	bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_iosize);
453
454	RTR0Term();
455
456	return config_detach_children(self, flags);
457	}
458
459
460	/**
461	* Removes IRQ for VMMDev.
462	*
463	* @param vboxguest Opaque pointer to the state info structure.
464	*/
465	static void VBoxGuestNetBSDRemoveIRQ(vboxguest_softc *sc)
466	{
467	LogFlow((DEVICE_NAME ": %s\n", __func__));
468
469	if (sc->pfnIrqHandler)
470	{
471	pci_intr_disestablish(sc->sc_pc, sc->pfnIrqHandler);
472	}
473	}
474
475
476	/**
477	* Interrupt service routine.
478	*
479	* @returns Whether the interrupt was from VMMDev.
480	* @param pvState Opaque pointer to the device state.
481	*/
482	static int VBoxGuestNetBSDISR(void *pvState)
483	{
484	LogFlow((DEVICE_NAME ": %s: pvState=%p\n", __func__, pvState));
485
486	bool fOurIRQ = VGDrvCommonISR(&g_DevExt);
487
488	return fOurIRQ ? 1 : 0;
489	}
490
491
492	/*
493	* Called by VGDrvCommonISR() if mouse position changed
494	*/
495	void VGDrvNativeISRMousePollEvent(PVBOXGUESTDEVEXT pDevExt)
496	{
497	vboxguest_softc *sc = g_SC;
498
499	LogFlow((DEVICE_NAME ": %s\n", __func__));
500
501	/*
502	* Wake up poll waiters.
503	*/
504	selnotify(&g_SelInfo, 0, 0);
505
506	if (sc->sc_vmmmousereq != NULL) {
507	int x, y;
508	int rc;
509
510	sc->sc_vmmmousereq->mouseFeatures = 0;
511	sc->sc_vmmmousereq->pointerXPos = 0;
512	sc->sc_vmmmousereq->pointerYPos = 0;
513
514	rc = VbglR0GRPerform(&sc->sc_vmmmousereq->header);
515	if (RT_FAILURE(rc))
516	return;
517
518	tpcalib_trans(&sc->sc_tpcalib,
519	sc->sc_vmmmousereq->pointerXPos,
520	sc->sc_vmmmousereq->pointerYPos,
521	&x, &y);
522
523	wsmouse_input(sc->sc_wsmousedev,
524	0, /* buttons */
525	x, y,
526	0, 0, /* z, w */
527	WSMOUSE_INPUT_ABSOLUTE_X \| WSMOUSE_INPUT_ABSOLUTE_Y);
528	}
529	}
530
531
532	bool VGDrvNativeProcessOption(PVBOXGUESTDEVEXT pDevExt, const char pszName, const char pszValue)
533	{
534	RT_NOREF(pDevExt); RT_NOREF(pszName); RT_NOREF(pszValue);
535	return false;
536	}
537
538
539	static int VBoxGuestNetBSDSetMouseStatus(vboxguest_softc *sc, uint32_t fStatus)
540	{
541	VBGLIOCSETMOUSESTATUS Req;
542	int rc;
543
544	VBGLREQHDR_INIT(&Req.Hdr, SET_MOUSE_STATUS);
545	Req.u.In.fStatus = fStatus;
546	rc = VGDrvCommonIoCtl(VBGL_IOCTL_SET_MOUSE_STATUS,
547	&g_DevExt,
548	sc->sc_session,
549	&Req.Hdr, sizeof(Req));
550	if (RT_SUCCESS(rc))
551	rc = Req.Hdr.rc;
552
553	return rc;
554	}
555
556
557	static int
558	VBoxGuestNetBSDWsmEnable(void *cookie)
559	{
560	vboxguest_softc *sc = cookie;
561	int rc;
562
563	rc = VBoxGuestNetBSDSetMouseStatus(sc, VMMDEV_MOUSE_GUEST_CAN_ABSOLUTE
564	\| VMMDEV_MOUSE_NEW_PROTOCOL);
565	if (RT_FAILURE(rc))
566	return RTErrConvertToErrno(rc);
567
568	return 0;
569	}
570
571
572	static void
573	VBoxGuestNetBSDWsmDisable(void *cookie)
574	{
575	vboxguest_softc *sc = cookie;
576	VBoxGuestNetBSDSetMouseStatus(sc, 0);
577	}
578
579
580	static int
581	VBoxGuestNetBSDWsmIOCtl(void cookie, u_long cmd, void data, int flag, struct lwp *l)
582	{
583	vboxguest_softc *sc = cookie;
584
585	switch (cmd) {
586	case WSMOUSEIO_GTYPE:
587	(u_int )data = WSMOUSE_TYPE_TPANEL;
588	break;
589
590	case WSMOUSEIO_SCALIBCOORDS:
591	case WSMOUSEIO_GCALIBCOORDS:
592	return tpcalib_ioctl(&sc->sc_tpcalib, cmd, data, flag, l);
593
594	default:
595	return EPASSTHROUGH;
596	}
597	return 0;
598	}
599
600
601	/**
602	* File open handler
603	*
604	*/
605	static int VBoxGuestNetBSDOpen(dev_t device, int flags, int fmt, struct lwp *process)
606	{
607	int rc;
608	vboxguest_softc *sc;
609	struct vboxguest_fdata *fdata;
610	file_t *fp;
611	int fd, error;
612
613	LogFlow((DEVICE_NAME ": %s\n", __func__));
614
615	if ((sc = device_lookup_private(&vboxguest_cd, minor(device))) == NULL)
616	{
617	printf("device_lookup_private failed\n");
618	return (ENXIO);
619	}
620
621	if ((sc->vboxguest_state & VBOXGUEST_STATE_INITOK) == 0)
622	{
623	aprint_error_dev(sc->sc_dev, "device not configured\n");
624	return (ENXIO);
625	}
626
627	fdata = kmem_alloc(sizeof(*fdata), KM_SLEEP);
628	if (fdata == NULL)
629	{
630	return (ENOMEM);
631	}
632
633	fdata->sc = sc;
634
635	if ((error = fd_allocfile(&fp, &fd)) != 0)
636	{
637	kmem_free(fdata, sizeof(*fdata));
638	return error;
639	}
640
641	/*
642	* Create a new session.
643	*/
644	rc = VGDrvCommonCreateUserSession(&g_DevExt, &fdata->session);
645	if (! RT_SUCCESS(rc))
646	{
647	aprint_error_dev(sc->sc_dev, "VBox session creation failed\n");
648	closef(fp); /* ??? */
649	kmem_free(fdata, sizeof(*fdata));
650	return RTErrConvertToErrno(rc);
651	}
652	ASMAtomicIncU32(&cUsers);
653	return fd_clone(fp, fd, flags, &vboxguest_fileops, fdata);
654
655	}
656
657	/**
658	* File close handler
659	*
660	*/
661	static int VBoxGuestNetBSDClose(struct file *fp)
662	{
663	struct vboxguest_fdata *fdata = fp->f_data;
664	vboxguest_softc *sc = fdata->sc;
665
666	LogFlow((DEVICE_NAME ": %s\n", __func__));
667
668	VGDrvCommonCloseSession(&g_DevExt, fdata->session);
669	ASMAtomicDecU32(&cUsers);
670
671	kmem_free(fdata, sizeof(*fdata));
672
673	return 0;
674	}
675
676	/**
677	* IOCTL handler
678	*
679	*/
680	static int VBoxGuestNetBSDIOCtl(struct file fp, u_long command, void data)
681	{
682	struct vboxguest_fdata *fdata = fp->f_data;
683
684	if (VBGL_IOCTL_IS_FAST(command))
685	return VGDrvCommonIoCtlFast(command, &g_DevExt, fdata->session);
686
687	return VBoxGuestNetBSDIOCtlSlow(fdata, command, data);
688	}
689
690	static int VBoxGuestNetBSDIOCtlSlow(struct vboxguest_fdata fdata, u_long command, void data)
691	{
692	vboxguest_softc *sc = fdata->sc;
693	size_t cbReq = IOCPARM_LEN(command);
694	PVBGLREQHDR pHdr = NULL;
695	void *pvUser = NULL;
696	int err, rc;
697
698	LogFlow(("%s: command=%#lx data=%p\n", __func__, command, data));
699
700	/*
701	* Buffered request?
702	*/
703	if ((command & IOC_DIRMASK) == IOC_INOUT)
704	{
705	/* will be validated by VGDrvCommonIoCtl() */
706	pHdr = (PVBGLREQHDR)data;
707	}
708
709	/*
710	* Big unbuffered request? "data" is the userland pointer.
711	*/
712	else if ((command & IOC_DIRMASK) == IOC_VOID && cbReq != 0)
713	{
714	/*
715	* Read the header, validate it and figure out how much that
716	* needs to be buffered.
717	*/
718	VBGLREQHDR Hdr;
719
720	if (RT_UNLIKELY(cbReq < sizeof(Hdr)))
721	return ENOTTY;
722
723	pvUser = data;
724	err = copyin(pvUser, &Hdr, sizeof(Hdr));
725	if (RT_UNLIKELY(err != 0))
726	return err;
727
728	if (RT_UNLIKELY(Hdr.uVersion != VBGLREQHDR_VERSION))
729	return ENOTTY;
730
731	if (cbReq > 16 * _1M)
732	return EINVAL;
733
734	if (Hdr.cbOut == 0)
735	Hdr.cbOut = Hdr.cbIn;
736
737	if (RT_UNLIKELY( Hdr.cbIn < sizeof(Hdr) \|\| Hdr.cbIn > cbReq
738	\|\| Hdr.cbOut < sizeof(Hdr) \|\| Hdr.cbOut > cbReq))
739	return EINVAL;
740
741	/*
742	* Allocate buffer and copy in the data.
743	*/
744	cbReq = RT_MAX(Hdr.cbIn, Hdr.cbOut);
745
746	pHdr = (PVBGLREQHDR)RTMemTmpAlloc(cbReq);
747	if (RT_UNLIKELY(pHdr == NULL))
748	{
749	LogRel(("%s: command=%#lx data=%p: unable to allocate %zu bytes\n",
750	__func__, command, data, cbReq));
751	return ENOMEM;
752	}
753
754	err = copyin(pvUser, pHdr, Hdr.cbIn);
755	if (err != 0)
756	{
757	RTMemTmpFree(pHdr);
758	return err;
759	}
760
761	if (Hdr.cbIn < cbReq)
762	memset((uint8_t *)pHdr + Hdr.cbIn, '\0', cbReq - Hdr.cbIn);
763	}
764
765	/*
766	* Process the IOCtl.
767	*/
768	rc = VGDrvCommonIoCtl(command, &g_DevExt, fdata->session, pHdr, cbReq);
769	if (RT_SUCCESS(rc))
770	{
771	err = 0;
772
773	/*
774	* If unbuffered, copy back the result before returning.
775	*/
776	if (pvUser != NULL)
777	{
778	size_t cbOut = pHdr->cbOut;
779	if (cbOut > cbReq)
780	{
781	LogRel(("%s: command=%#lx data=%p: too much output: %zu > %zu\n",
782	__func__, command, data, cbOut, cbReq));
783	cbOut = cbReq;
784	}
785
786	err = copyout(pHdr, pvUser, cbOut);
787	RTMemTmpFree(pHdr);
788	}
789	}
790	else
791	{
792	LogRel(("%s: command=%#lx data=%p: error %Rrc\n",
793	__func__, command, data, rc));
794
795	if (pvUser != NULL)
796	RTMemTmpFree(pHdr);
797
798	err = RTErrConvertToErrno(rc);
799	}
800
801	return err;
802	}
803
804	static int VBoxGuestNetBSDPoll(struct file *fp, int events)
805	{
806	struct vboxguest_fdata *fdata = fp->f_data;
807	vboxguest_softc *sc = fdata->sc;
808
809	int rc = 0;
810	int events_processed;
811
812	uint32_t u32CurSeq;
813
814	LogFlow((DEVICE_NAME ": %s\n", __func__));
815
816	u32CurSeq = ASMAtomicUoReadU32(&g_DevExt.u32MousePosChangedSeq);
817	if (fdata->session->u32MousePosChangedSeq != u32CurSeq)
818	{
819	events_processed = events & (POLLIN \| POLLRDNORM);
820	fdata->session->u32MousePosChangedSeq = u32CurSeq;
821	}
822	else
823	{
824	events_processed = 0;
825
826	selrecord(curlwp, &g_SelInfo);
827	}
828
829	return events_processed;
830	}
831
832
833	/**
834	* @note This code is duplicated on other platforms with variations, so please
835	* keep them all up to date when making changes!
836	*/
837	int VBOXCALL VBoxGuestIDC(void *pvSession, uintptr_t uReq, PVBGLREQHDR pReqHdr, size_t cbReq)
838	{
839	/*
840	* Simple request validation (common code does the rest).
841	*/
842	int rc;
843	if ( RT_VALID_PTR(pReqHdr)
844	&& cbReq >= sizeof(*pReqHdr))
845	{
846	/*
847	* All requests except the connect one requires a valid session.
848	*/
849	PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)pvSession;
850	if (pSession)
851	{
852	if ( RT_VALID_PTR(pSession)
853	&& pSession->pDevExt == &g_DevExt)
854	rc = VGDrvCommonIoCtl(uReq, &g_DevExt, pSession, pReqHdr, cbReq);
855	else
856	rc = VERR_INVALID_HANDLE;
857	}
858	else if (uReq == VBGL_IOCTL_IDC_CONNECT)
859	{
860	rc = VGDrvCommonCreateKernelSession(&g_DevExt, &pSession);
861	if (RT_SUCCESS(rc))
862	{
863	rc = VGDrvCommonIoCtl(uReq, &g_DevExt, pSession, pReqHdr, cbReq);
864	if (RT_FAILURE(rc))
865	VGDrvCommonCloseSession(&g_DevExt, pSession);
866	}
867	}
868	else
869	rc = VERR_INVALID_HANDLE;
870	}
871	else
872	rc = VERR_INVALID_POINTER;
873	return rc;
874	}
875
876
877	MODULE(MODULE_CLASS_DRIVER, vboxguest, "pci");
878
879	static const struct cfiattrdata wsmousedevcf_iattrdata = {
880	"wsmousedev", 1, {
881	{ "mux", "0", 0 },
882	}
883	};
884
885	/* device vboxguest: wsmousedev */
886	static const struct cfiattrdata * const vboxguest_attrs[] = { &wsmousedevcf_iattrdata, NULL };
887	CFDRIVER_DECL(vboxguest, DV_DULL, vboxguest_attrs);
888
889	static struct cfdriver * const cfdriver_ioconf_vboxguest[] = {
890	&vboxguest_cd, NULL
891	};
892
893
894	static const struct cfparent vboxguest_pspec = {
895	"pci", "pci", DVUNIT_ANY
896	};
897	static int vboxguest_loc[] = { -1, -1 };
898
899
900	static const struct cfparent wsmousedev_pspec = {
901	"wsmousedev", "vboxguest", DVUNIT_ANY
902	};
903	static int wsmousedev_loc[] = { 0 };
904
905
906	static struct cfdata cfdata_ioconf_vboxguest[] = {
907	/* vboxguest0 at pci? dev ? function ? */
908	{
909	.cf_name = "vboxguest",
910	.cf_atname = "vboxguest",
911	.cf_unit = 0, /* Only unit 0 is ever used */
912	.cf_fstate = FSTATE_NOTFOUND,
913	.cf_loc = vboxguest_loc,
914	.cf_flags = 0,
915	.cf_pspec = &vboxguest_pspec,
916	},
917
918	/* wsmouse* at vboxguest? */
919	{ "wsmouse", "wsmouse", 0, FSTATE_STAR, wsmousedev_loc, 0, &wsmousedev_pspec },
920
921	{ NULL, NULL, 0, 0, NULL, 0, NULL }
922	};
923
924	static struct cfattach * const vboxguest_cfattachinit[] = {
925	&vboxguest_ca, NULL
926	};
927
928	static const struct cfattachinit cfattach_ioconf_vboxguest[] = {
929	{ "vboxguest", vboxguest_cfattachinit },
930	{ NULL, NULL }
931	};
932
933	static int
934	vboxguest_modcmd(modcmd_t cmd, void *opaque)
935	{
936	devmajor_t bmajor, cmajor;
937	register_t retval;
938	int error;
939
940	LogFlow((DEVICE_NAME ": %s\n", __func__));
941
942	switch (cmd)
943	{
944	case MODULE_CMD_INIT:
945	error = config_init_component(cfdriver_ioconf_vboxguest,
946	cfattach_ioconf_vboxguest,
947	cfdata_ioconf_vboxguest);
948	if (error)
949	break;
950
951	bmajor = cmajor = NODEVMAJOR;
952	error = devsw_attach("vboxguest",
953	NULL, &bmajor,
954	&g_VBoxGuestNetBSDChrDevSW, &cmajor);
955	if (error)
956	{
957	if (error == EEXIST)
958	error = 0; /* maybe built-in ... improve eventually */
959	else
960	break;
961	}
962
963	error = do_sys_mknod(curlwp, "/dev/vboxguest",
964	0666\|S_IFCHR, makedev(cmajor, 0),
965	&retval, UIO_SYSSPACE);
966	if (error == EEXIST)
967	error = 0;
968	break;
969
970	case MODULE_CMD_FINI:
971	error = config_fini_component(cfdriver_ioconf_vboxguest,
972	cfattach_ioconf_vboxguest,
973	cfdata_ioconf_vboxguest);
974	if (error)
975	break;
976
977	devsw_detach(NULL, &g_VBoxGuestNetBSDChrDevSW);
978	break;
979
980	default:
981	return ENOTTY;
982	}
983	return error;
984	}

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source: vbox/trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-netbsd.c@ 70066

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