VBoxGuest-netbsd.c@ 71146

Last change on this file since 71146 was 70873, checked in by vboxsync, 7 years ago
VMMDev,VBoxGuest: Classify who is calling the host (part 1). bugref:9105
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1	/* $Id: VBoxGuest-netbsd.c 70873 2018-02-05 18:13:55Z 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.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/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
318	/*
319	* Read host configuration.
320	*/
321	VGDrvCommonProcessOptionsFromHost(&g_DevExt);
322
323	/*
324	* Attach wsmouse.
325	*/
326	VBoxGuestNetBSDWsmAttach(sc);
327
328	g_SC = sc;
329	return;
330	}
331	VGDrvCommonDeleteDevExt(&g_DevExt);
332	}
333	else
334	{
335	aprint_error_dev(sc->sc_dev, "init failed\n");
336	}
337	bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize);
338	}
339	else
340	{
341	aprint_error_dev(sc->sc_dev, "MMIO mapping failed\n");
342	}
343	bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_iosize);
344	}
345	else
346	{
347	aprint_error_dev(sc->sc_dev, "IO mapping failed\n");
348	}
349
350	RTR0Term();
351	return;
352	}
353
354
355	/**
356	* Sets IRQ for VMMDev.
357	*
358	* @returns NetBSD error code.
359	* @param sc Pointer to the state info structure.
360	* @param pa Pointer to the PCI attach arguments.
361	*/
362	static int VBoxGuestNetBSDAddIRQ(vboxguest_softc sc, struct pci_attach_args pa)
363	{
364	int iResId = 0;
365	int rc = 0;
366	const char *intrstr;
367	#if __NetBSD_Prereq__(6, 99, 39)
368	char intstrbuf[100];
369	#endif
370
371	LogFlow((DEVICE_NAME ": %s\n", __func__));
372
373	if (pci_intr_map(pa, &sc->ih))
374	{
375	aprint_error_dev(sc->sc_dev, "couldn't map interrupt.\n");
376	return VERR_DEV_IO_ERROR;
377	}
378
379	intrstr = pci_intr_string(sc->sc_pc, sc->ih
380	#if __NetBSD_Prereq__(6, 99, 39)
381	, intstrbuf, sizeof(intstrbuf)
382	#endif
383	);
384	aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
385
386	sc->pfnIrqHandler = pci_intr_establish(sc->sc_pc, sc->ih, IPL_BIO, VBoxGuestNetBSDISR, sc);
387	if (sc->pfnIrqHandler == NULL)
388	{
389	aprint_error_dev(sc->sc_dev, "couldn't establish interrupt\n");
390	return VERR_DEV_IO_ERROR;
391	}
392
393	return VINF_SUCCESS;
394	}
395
396
397	/*
398	* Optionally attach wsmouse(4) device as a child.
399	*/
400	static void VBoxGuestNetBSDWsmAttach(vboxguest_softc *sc)
401	{
402	struct wsmousedev_attach_args am = { &vboxguest_wsm_accessops, sc };
403
404	PVBOXGUESTSESSION session = NULL;
405	VMMDevReqMouseStatus *req = NULL;
406	int rc;
407
408	rc = VGDrvCommonCreateKernelSession(&g_DevExt, &session);
409	if (RT_FAILURE(rc))
410	goto fail;
411
412	rc = VbglR0GRAlloc((VMMDevRequestHeader *)&req, sizeof(req),
413	VMMDevReq_GetMouseStatus);
414	if (RT_FAILURE(rc))
415	goto fail;
416
417	sc->sc_wsmousedev = config_found_ia(sc->sc_dev, "wsmousedev", &am, wsmousedevprint);
418	if (sc->sc_wsmousedev == NULL)
419	goto fail;
420
421	sc->sc_session = session;
422	sc->sc_vmmmousereq = req;
423
424	tpcalib_init(&sc->sc_tpcalib);
425	tpcalib_ioctl(&sc->sc_tpcalib, WSMOUSEIO_SCALIBCOORDS,
426	&vboxguest_wsm_default_calib, 0, 0);
427	return;
428
429	fail:
430	if (session != NULL)
431	VGDrvCommonCloseSession(&g_DevExt, session);
432	if (req != NULL)
433	VbglR0GRFree((VMMDevRequestHeader *)req);
434	}
435
436
437	static int VBoxGuestNetBSDDetach(device_t self, int flags)
438	{
439	vboxguest_softc *sc;
440	sc = device_private(self);
441
442	LogFlow((DEVICE_NAME ": %s\n", __func__));
443
444	if (cUsers > 0)
445	return EBUSY;
446
447	if ((sc->vboxguest_state & VBOXGUEST_STATE_INITOK) == 0)
448	return 0;
449
450	/*
451	* Reverse what we did in VBoxGuestNetBSDAttach.
452	*/
453	if (sc->sc_vmmmousereq != NULL)
454	VbglR0GRFree((VMMDevRequestHeader *)sc->sc_vmmmousereq);
455
456	VBoxGuestNetBSDRemoveIRQ(sc);
457
458	VGDrvCommonDeleteDevExt(&g_DevExt);
459
460	bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize);
461	bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_iosize);
462
463	RTR0Term();
464
465	return config_detach_children(self, flags);
466	}
467
468
469	/**
470	* Removes IRQ for VMMDev.
471	*
472	* @param sc Opaque pointer to the state info structure.
473	*/
474	static void VBoxGuestNetBSDRemoveIRQ(vboxguest_softc *sc)
475	{
476	LogFlow((DEVICE_NAME ": %s\n", __func__));
477
478	if (sc->pfnIrqHandler)
479	{
480	pci_intr_disestablish(sc->sc_pc, sc->pfnIrqHandler);
481	}
482	}
483
484
485	/**
486	* Interrupt service routine.
487	*
488	* @returns Whether the interrupt was from VMMDev.
489	* @param pvState Opaque pointer to the device state.
490	*/
491	static int VBoxGuestNetBSDISR(void *pvState)
492	{
493	LogFlow((DEVICE_NAME ": %s: pvState=%p\n", __func__, pvState));
494
495	bool fOurIRQ = VGDrvCommonISR(&g_DevExt);
496
497	return fOurIRQ ? 1 : 0;
498	}
499
500
501	/*
502	* Called by VGDrvCommonISR() if mouse position changed
503	*/
504	void VGDrvNativeISRMousePollEvent(PVBOXGUESTDEVEXT pDevExt)
505	{
506	vboxguest_softc *sc = g_SC;
507
508	LogFlow((DEVICE_NAME ": %s\n", __func__));
509
510	/*
511	* Wake up poll waiters.
512	*/
513	selnotify(&g_SelInfo, 0, 0);
514
515	if (sc->sc_vmmmousereq != NULL) {
516	int x, y;
517	int rc;
518
519	sc->sc_vmmmousereq->mouseFeatures = 0;
520	sc->sc_vmmmousereq->pointerXPos = 0;
521	sc->sc_vmmmousereq->pointerYPos = 0;
522
523	rc = VbglR0GRPerform(&sc->sc_vmmmousereq->header);
524	if (RT_FAILURE(rc))
525	return;
526
527	tpcalib_trans(&sc->sc_tpcalib,
528	sc->sc_vmmmousereq->pointerXPos,
529	sc->sc_vmmmousereq->pointerYPos,
530	&x, &y);
531
532	wsmouse_input(sc->sc_wsmousedev,
533	0, /* buttons */
534	x, y,
535	0, 0, /* z, w */
536	WSMOUSE_INPUT_ABSOLUTE_X \| WSMOUSE_INPUT_ABSOLUTE_Y);
537	}
538	}
539
540
541	bool VGDrvNativeProcessOption(PVBOXGUESTDEVEXT pDevExt, const char pszName, const char pszValue)
542	{
543	RT_NOREF(pDevExt); RT_NOREF(pszName); RT_NOREF(pszValue);
544	return false;
545	}
546
547
548	static int VBoxGuestNetBSDSetMouseStatus(vboxguest_softc *sc, uint32_t fStatus)
549	{
550	VBGLIOCSETMOUSESTATUS Req;
551	int rc;
552
553	VBGLREQHDR_INIT(&Req.Hdr, SET_MOUSE_STATUS);
554	Req.u.In.fStatus = fStatus;
555	rc = VGDrvCommonIoCtl(VBGL_IOCTL_SET_MOUSE_STATUS,
556	&g_DevExt,
557	sc->sc_session,
558	&Req.Hdr, sizeof(Req));
559	if (RT_SUCCESS(rc))
560	rc = Req.Hdr.rc;
561
562	return rc;
563	}
564
565
566	static int
567	VBoxGuestNetBSDWsmEnable(void *cookie)
568	{
569	vboxguest_softc *sc = cookie;
570	int rc;
571
572	rc = VBoxGuestNetBSDSetMouseStatus(sc, VMMDEV_MOUSE_GUEST_CAN_ABSOLUTE
573	\| VMMDEV_MOUSE_NEW_PROTOCOL);
574	if (RT_FAILURE(rc))
575	return RTErrConvertToErrno(rc);
576
577	return 0;
578	}
579
580
581	static void
582	VBoxGuestNetBSDWsmDisable(void *cookie)
583	{
584	vboxguest_softc *sc = cookie;
585	VBoxGuestNetBSDSetMouseStatus(sc, 0);
586	}
587
588
589	static int
590	VBoxGuestNetBSDWsmIOCtl(void cookie, u_long cmd, void data, int flag, struct lwp *l)
591	{
592	vboxguest_softc *sc = cookie;
593
594	switch (cmd) {
595	case WSMOUSEIO_GTYPE:
596	(u_int )data = WSMOUSE_TYPE_TPANEL;
597	break;
598
599	case WSMOUSEIO_SCALIBCOORDS:
600	case WSMOUSEIO_GCALIBCOORDS:
601	return tpcalib_ioctl(&sc->sc_tpcalib, cmd, data, flag, l);
602
603	default:
604	return EPASSTHROUGH;
605	}
606	return 0;
607	}
608
609
610	/**
611	* File open handler
612	*
613	*/
614	static int VBoxGuestNetBSDOpen(dev_t device, int flags, int fmt, struct lwp *process)
615	{
616	int rc;
617	vboxguest_softc *sc;
618	struct vboxguest_fdata *fdata;
619	file_t *fp;
620	int fd, error;
621
622	LogFlow((DEVICE_NAME ": %s\n", __func__));
623
624	if ((sc = device_lookup_private(&vboxguest_cd, minor(device))) == NULL)
625	{
626	printf("device_lookup_private failed\n");
627	return (ENXIO);
628	}
629
630	if ((sc->vboxguest_state & VBOXGUEST_STATE_INITOK) == 0)
631	{
632	aprint_error_dev(sc->sc_dev, "device not configured\n");
633	return (ENXIO);
634	}
635
636	fdata = kmem_alloc(sizeof(*fdata), KM_SLEEP);
637	if (fdata == NULL)
638	{
639	return (ENOMEM);
640	}
641
642	fdata->sc = sc;
643
644	if ((error = fd_allocfile(&fp, &fd)) != 0)
645	{
646	kmem_free(fdata, sizeof(*fdata));
647	return error;
648	}
649
650	/*
651	* Create a new session.
652	*/
653	rc = VGDrvCommonCreateUserSession(&g_DevExt, VMMDEV_REQUESTOR_USERMODE, &fdata->session);
654	if (! RT_SUCCESS(rc))
655	{
656	aprint_error_dev(sc->sc_dev, "VBox session creation failed\n");
657	closef(fp); /* ??? */
658	kmem_free(fdata, sizeof(*fdata));
659	return RTErrConvertToErrno(rc);
660	}
661	ASMAtomicIncU32(&cUsers);
662	return fd_clone(fp, fd, flags, &vboxguest_fileops, fdata);
663
664	}
665
666	/**
667	* File close handler
668	*
669	*/
670	static int VBoxGuestNetBSDClose(struct file *fp)
671	{
672	struct vboxguest_fdata *fdata = fp->f_data;
673	vboxguest_softc *sc = fdata->sc;
674
675	LogFlow((DEVICE_NAME ": %s\n", __func__));
676
677	VGDrvCommonCloseSession(&g_DevExt, fdata->session);
678	ASMAtomicDecU32(&cUsers);
679
680	kmem_free(fdata, sizeof(*fdata));
681
682	return 0;
683	}
684
685	/**
686	* IOCTL handler
687	*
688	*/
689	static int VBoxGuestNetBSDIOCtl(struct file fp, u_long command, void data)
690	{
691	struct vboxguest_fdata *fdata = fp->f_data;
692
693	if (VBGL_IOCTL_IS_FAST(command))
694	return VGDrvCommonIoCtlFast(command, &g_DevExt, fdata->session);
695
696	return VBoxGuestNetBSDIOCtlSlow(fdata, command, data);
697	}
698
699	static int VBoxGuestNetBSDIOCtlSlow(struct vboxguest_fdata fdata, u_long command, void data)
700	{
701	vboxguest_softc *sc = fdata->sc;
702	size_t cbReq = IOCPARM_LEN(command);
703	PVBGLREQHDR pHdr = NULL;
704	void *pvUser = NULL;
705	int err, rc;
706
707	LogFlow(("%s: command=%#lx data=%p\n", __func__, command, data));
708
709	/*
710	* Buffered request?
711	*/
712	if ((command & IOC_DIRMASK) == IOC_INOUT)
713	{
714	/* will be validated by VGDrvCommonIoCtl() */
715	pHdr = (PVBGLREQHDR)data;
716	}
717
718	/*
719	* Big unbuffered request? "data" is the userland pointer.
720	*/
721	else if ((command & IOC_DIRMASK) == IOC_VOID && cbReq != 0)
722	{
723	/*
724	* Read the header, validate it and figure out how much that
725	* needs to be buffered.
726	*/
727	VBGLREQHDR Hdr;
728
729	if (RT_UNLIKELY(cbReq < sizeof(Hdr)))
730	return ENOTTY;
731
732	pvUser = data;
733	err = copyin(pvUser, &Hdr, sizeof(Hdr));
734	if (RT_UNLIKELY(err != 0))
735	return err;
736
737	if (RT_UNLIKELY(Hdr.uVersion != VBGLREQHDR_VERSION))
738	return ENOTTY;
739
740	if (cbReq > 16 * _1M)
741	return EINVAL;
742
743	if (Hdr.cbOut == 0)
744	Hdr.cbOut = Hdr.cbIn;
745
746	if (RT_UNLIKELY( Hdr.cbIn < sizeof(Hdr) \|\| Hdr.cbIn > cbReq
747	\|\| Hdr.cbOut < sizeof(Hdr) \|\| Hdr.cbOut > cbReq))
748	return EINVAL;
749
750	/*
751	* Allocate buffer and copy in the data.
752	*/
753	cbReq = RT_MAX(Hdr.cbIn, Hdr.cbOut);
754
755	pHdr = (PVBGLREQHDR)RTMemTmpAlloc(cbReq);
756	if (RT_UNLIKELY(pHdr == NULL))
757	{
758	LogRel(("%s: command=%#lx data=%p: unable to allocate %zu bytes\n",
759	__func__, command, data, cbReq));
760	return ENOMEM;
761	}
762
763	err = copyin(pvUser, pHdr, Hdr.cbIn);
764	if (err != 0)
765	{
766	RTMemTmpFree(pHdr);
767	return err;
768	}
769
770	if (Hdr.cbIn < cbReq)
771	memset((uint8_t *)pHdr + Hdr.cbIn, '\0', cbReq - Hdr.cbIn);
772	}
773
774	/*
775	* Process the IOCtl.
776	*/
777	rc = VGDrvCommonIoCtl(command, &g_DevExt, fdata->session, pHdr, cbReq);
778	if (RT_SUCCESS(rc))
779	{
780	err = 0;
781
782	/*
783	* If unbuffered, copy back the result before returning.
784	*/
785	if (pvUser != NULL)
786	{
787	size_t cbOut = pHdr->cbOut;
788	if (cbOut > cbReq)
789	{
790	LogRel(("%s: command=%#lx data=%p: too much output: %zu > %zu\n",
791	__func__, command, data, cbOut, cbReq));
792	cbOut = cbReq;
793	}
794
795	err = copyout(pHdr, pvUser, cbOut);
796	RTMemTmpFree(pHdr);
797	}
798	}
799	else
800	{
801	LogRel(("%s: command=%#lx data=%p: error %Rrc\n",
802	__func__, command, data, rc));
803
804	if (pvUser != NULL)
805	RTMemTmpFree(pHdr);
806
807	err = RTErrConvertToErrno(rc);
808	}
809
810	return err;
811	}
812
813	static int VBoxGuestNetBSDPoll(struct file *fp, int events)
814	{
815	struct vboxguest_fdata *fdata = fp->f_data;
816	vboxguest_softc *sc = fdata->sc;
817
818	int rc = 0;
819	int events_processed;
820
821	uint32_t u32CurSeq;
822
823	LogFlow((DEVICE_NAME ": %s\n", __func__));
824
825	u32CurSeq = ASMAtomicUoReadU32(&g_DevExt.u32MousePosChangedSeq);
826	if (fdata->session->u32MousePosChangedSeq != u32CurSeq)
827	{
828	events_processed = events & (POLLIN \| POLLRDNORM);
829	fdata->session->u32MousePosChangedSeq = u32CurSeq;
830	}
831	else
832	{
833	events_processed = 0;
834
835	selrecord(curlwp, &g_SelInfo);
836	}
837
838	return events_processed;
839	}
840
841
842	/**
843	* @note This code is duplicated on other platforms with variations, so please
844	* keep them all up to date when making changes!
845	*/
846	int VBOXCALL VBoxGuestIDC(void *pvSession, uintptr_t uReq, PVBGLREQHDR pReqHdr, size_t cbReq)
847	{
848	/*
849	* Simple request validation (common code does the rest).
850	*/
851	int rc;
852	if ( RT_VALID_PTR(pReqHdr)
853	&& cbReq >= sizeof(*pReqHdr))
854	{
855	/*
856	* All requests except the connect one requires a valid session.
857	*/
858	PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)pvSession;
859	if (pSession)
860	{
861	if ( RT_VALID_PTR(pSession)
862	&& pSession->pDevExt == &g_DevExt)
863	rc = VGDrvCommonIoCtl(uReq, &g_DevExt, pSession, pReqHdr, cbReq);
864	else
865	rc = VERR_INVALID_HANDLE;
866	}
867	else if (uReq == VBGL_IOCTL_IDC_CONNECT)
868	{
869	rc = VGDrvCommonCreateKernelSession(&g_DevExt, &pSession);
870	if (RT_SUCCESS(rc))
871	{
872	rc = VGDrvCommonIoCtl(uReq, &g_DevExt, pSession, pReqHdr, cbReq);
873	if (RT_FAILURE(rc))
874	VGDrvCommonCloseSession(&g_DevExt, pSession);
875	}
876	}
877	else
878	rc = VERR_INVALID_HANDLE;
879	}
880	else
881	rc = VERR_INVALID_POINTER;
882	return rc;
883	}
884
885
886	MODULE(MODULE_CLASS_DRIVER, vboxguest, "pci");
887
888	/*
889	* XXX: See netbsd/vboxguest.ioconf for the details.
890	*/
891	#if 0
892	#include "ioconf.c"
893	#else
894
895	static const struct cfiattrdata wsmousedevcf_iattrdata = {
896	"wsmousedev", 1, {
897	{ "mux", "0", 0 },
898	}
899	};
900
901	/* device vboxguest: wsmousedev */
902	static const struct cfiattrdata * const vboxguest_attrs[] = { &wsmousedevcf_iattrdata, NULL };
903	CFDRIVER_DECL(vboxguest, DV_DULL, vboxguest_attrs);
904
905	static struct cfdriver * const cfdriver_ioconf_vboxguest[] = {
906	&vboxguest_cd, NULL
907	};
908
909
910	static const struct cfparent vboxguest_pspec = {
911	"pci", "pci", DVUNIT_ANY
912	};
913	static int vboxguest_loc[] = { -1, -1 };
914
915
916	static const struct cfparent wsmousedev_pspec = {
917	"wsmousedev", "vboxguest", DVUNIT_ANY
918	};
919	static int wsmousedev_loc[] = { 0 };
920
921
922	static struct cfdata cfdata_ioconf_vboxguest[] = {
923	/* vboxguest0 at pci? dev ? function ? */
924	{
925	.cf_name = "vboxguest",
926	.cf_atname = "vboxguest",
927	.cf_unit = 0, /* Only unit 0 is ever used */
928	.cf_fstate = FSTATE_NOTFOUND,
929	.cf_loc = vboxguest_loc,
930	.cf_flags = 0,
931	.cf_pspec = &vboxguest_pspec,
932	},
933
934	/* wsmouse* at vboxguest? */
935	{ "wsmouse", "wsmouse", 0, FSTATE_STAR, wsmousedev_loc, 0, &wsmousedev_pspec },
936
937	{ NULL, NULL, 0, 0, NULL, 0, NULL }
938	};
939
940	static struct cfattach * const vboxguest_cfattachinit[] = {
941	&vboxguest_ca, NULL
942	};
943
944	static const struct cfattachinit cfattach_ioconf_vboxguest[] = {
945	{ "vboxguest", vboxguest_cfattachinit },
946	{ NULL, NULL }
947	};
948	#endif
949
950
951	static int
952	vboxguest_modcmd(modcmd_t cmd, void *opaque)
953	{
954	devmajor_t bmajor, cmajor;
955	register_t retval;
956	int error;
957
958	LogFlow((DEVICE_NAME ": %s\n", __func__));
959
960	switch (cmd)
961	{
962	case MODULE_CMD_INIT:
963	error = config_init_component(cfdriver_ioconf_vboxguest,
964	cfattach_ioconf_vboxguest,
965	cfdata_ioconf_vboxguest);
966	if (error)
967	break;
968
969	bmajor = cmajor = NODEVMAJOR;
970	error = devsw_attach("vboxguest",
971	NULL, &bmajor,
972	&g_VBoxGuestNetBSDChrDevSW, &cmajor);
973	if (error)
974	{
975	if (error == EEXIST)
976	error = 0; /* maybe built-in ... improve eventually */
977	else
978	break;
979	}
980
981	error = do_sys_mknod(curlwp, "/dev/vboxguest",
982	0666\|S_IFCHR, makedev(cmajor, 0),
983	&retval, UIO_SYSSPACE);
984	if (error == EEXIST)
985	error = 0;
986	break;
987
988	case MODULE_CMD_FINI:
989	error = config_fini_component(cfdriver_ioconf_vboxguest,
990	cfattach_ioconf_vboxguest,
991	cfdata_ioconf_vboxguest);
992	if (error)
993	break;
994
995	devsw_detach(NULL, &g_VBoxGuestNetBSDChrDevSW);
996	break;
997
998	default:
999	return ENOTTY;
1000	}
1001	return error;
1002	}

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source: vbox/trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-netbsd.c@ 71146

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