VBoxGuest-netbsd.c@ 70059

Last change on this file since 70059 was 70059, checked in by vboxsync, 7 years ago
VBoxGuest-netbsd.c: oops, fix doxygen fallout from the renaming.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
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1	/* $Id: VBoxGuest-netbsd.c 70059 2017-12-11 15:11:15Z 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 ? 0 : 1;
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	static int VBoxGuestNetBSDSetMouseStatus(vboxguest_softc *sc, uint32_t fStatus)
533	{
534	VBGLIOCSETMOUSESTATUS Req;
535	int rc;
536
537	VBGLREQHDR_INIT(&Req.Hdr, SET_MOUSE_STATUS);
538	Req.u.In.fStatus = fStatus;
539	rc = VGDrvCommonIoCtl(VBGL_IOCTL_SET_MOUSE_STATUS,
540	&g_DevExt,
541	sc->sc_session,
542	&Req.Hdr, sizeof(Req));
543	if (RT_SUCCESS(rc))
544	rc = Req.Hdr.rc;
545
546	return rc;
547	}
548
549
550	static int
551	VBoxGuestNetBSDWsmEnable(void *cookie)
552	{
553	vboxguest_softc *sc = cookie;
554	int rc;
555
556	rc = VBoxGuestNetBSDSetMouseStatus(sc, VMMDEV_MOUSE_GUEST_CAN_ABSOLUTE
557	\| VMMDEV_MOUSE_NEW_PROTOCOL);
558	if (RT_FAILURE(rc))
559	return RTErrConvertToErrno(rc);
560
561	return 0;
562	}
563
564
565	static void
566	VBoxGuestNetBSDWsmDisable(void *cookie)
567	{
568	vboxguest_softc *sc = cookie;
569	VBoxGuestNetBSDSetMouseStatus(sc, 0);
570	}
571
572
573	static int
574	VBoxGuestNetBSDWsmIOCtl(void cookie, u_long cmd, void data, int flag, struct lwp *l)
575	{
576	vboxguest_softc *sc = cookie;
577
578	switch (cmd) {
579	case WSMOUSEIO_GTYPE:
580	(u_int )data = WSMOUSE_TYPE_TPANEL;
581	break;
582
583	case WSMOUSEIO_SCALIBCOORDS:
584	case WSMOUSEIO_GCALIBCOORDS:
585	return tpcalib_ioctl(&sc->sc_tpcalib, cmd, data, flag, l);
586
587	default:
588	return EPASSTHROUGH;
589	}
590	return 0;
591	}
592
593
594	/**
595	* File open handler
596	*
597	*/
598	static int VBoxGuestNetBSDOpen(dev_t device, int flags, int fmt, struct lwp *process)
599	{
600	int rc;
601	vboxguest_softc *sc;
602	struct vboxguest_fdata *fdata;
603	file_t *fp;
604	int fd, error;
605
606	LogFlow((DEVICE_NAME ": %s\n", __func__));
607
608	if ((sc = device_lookup_private(&vboxguest_cd, minor(device))) == NULL)
609	{
610	printf("device_lookup_private failed\n");
611	return (ENXIO);
612	}
613
614	if ((sc->vboxguest_state & VBOXGUEST_STATE_INITOK) == 0)
615	{
616	aprint_error_dev(sc->sc_dev, "device not configured\n");
617	return (ENXIO);
618	}
619
620	fdata = kmem_alloc(sizeof(*fdata), KM_SLEEP);
621	if (fdata == NULL)
622	{
623	return (ENOMEM);
624	}
625
626	fdata->sc = sc;
627
628	if ((error = fd_allocfile(&fp, &fd)) != 0)
629	{
630	kmem_free(fdata, sizeof(*fdata));
631	return error;
632	}
633
634	/*
635	* Create a new session.
636	*/
637	rc = VGDrvCommonCreateUserSession(&g_DevExt, &fdata->session);
638	if (! RT_SUCCESS(rc))
639	{
640	aprint_error_dev(sc->sc_dev, "VBox session creation failed\n");
641	closef(fp); /* ??? */
642	kmem_free(fdata, sizeof(*fdata));
643	return RTErrConvertToErrno(rc);
644	}
645	ASMAtomicIncU32(&cUsers);
646	return fd_clone(fp, fd, flags, &vboxguest_fileops, fdata);
647
648	}
649
650	/**
651	* File close handler
652	*
653	*/
654	static int VBoxGuestNetBSDClose(struct file *fp)
655	{
656	struct vboxguest_fdata *fdata = fp->f_data;
657	vboxguest_softc *sc = fdata->sc;
658
659	LogFlow((DEVICE_NAME ": %s\n", __func__));
660
661	VGDrvCommonCloseSession(&g_DevExt, fdata->session);
662	ASMAtomicDecU32(&cUsers);
663
664	kmem_free(fdata, sizeof(*fdata));
665
666	return 0;
667	}
668
669	/**
670	* IOCTL handler
671	*
672	*/
673	static int VBoxGuestNetBSDIOCtl(struct file fp, u_long command, void data)
674	{
675	struct vboxguest_fdata *fdata = fp->f_data;
676
677	if (VBGL_IOCTL_IS_FAST(command))
678	return VGDrvCommonIoCtlFast(command, &g_DevExt, fdata->session);
679
680	return VBoxGuestNetBSDIOCtlSlow(fdata, command, data);
681	}
682
683	static int VBoxGuestNetBSDIOCtlSlow(struct vboxguest_fdata fdata, u_long command, void data)
684	{
685	vboxguest_softc *sc = fdata->sc;
686	size_t cbReq = IOCPARM_LEN(command);
687	PVBGLREQHDR pHdr = NULL;
688	void *pvUser = NULL;
689	int err, rc;
690
691	LogFlow(("%s: command=%#lx data=%p\n", __func__, command, data));
692
693	/*
694	* Buffered request?
695	*/
696	if ((command & IOC_DIRMASK) == IOC_INOUT)
697	{
698	/* will be validated by VGDrvCommonIoCtl() */
699	pHdr = (PVBGLREQHDR)data;
700	}
701
702	/*
703	* Big unbuffered request? "data" is the userland pointer.
704	*/
705	else if ((command & IOC_DIRMASK) == IOC_VOID && cbReq != 0)
706	{
707	/*
708	* Read the header, validate it and figure out how much that
709	* needs to be buffered.
710	*/
711	VBGLREQHDR Hdr;
712
713	if (RT_UNLIKELY(cbReq < sizeof(Hdr)))
714	return ENOTTY;
715
716	pvUser = data;
717	err = copyin(pvUser, &Hdr, sizeof(Hdr));
718	if (RT_UNLIKELY(err != 0))
719	return err;
720
721	if (RT_UNLIKELY(Hdr.uVersion != VBGLREQHDR_VERSION))
722	return ENOTTY;
723
724	if (cbReq > 16 * _1M)
725	return EINVAL;
726
727	if (Hdr.cbOut == 0)
728	Hdr.cbOut = Hdr.cbIn;
729
730	if (RT_UNLIKELY( Hdr.cbIn < sizeof(Hdr) \|\| Hdr.cbIn > cbReq
731	\|\| Hdr.cbOut < sizeof(Hdr) \|\| Hdr.cbOut > cbReq))
732	return EINVAL;
733
734	/*
735	* Allocate buffer and copy in the data.
736	*/
737	cbReq = RT_MAX(Hdr.cbIn, Hdr.cbOut);
738
739	pHdr = (PVBGLREQHDR)RTMemTmpAlloc(cbReq);
740	if (RT_UNLIKELY(pHdr == NULL))
741	{
742	LogRel(("%s: command=%#lx data=%p: unable to allocate %zu bytes\n",
743	__func__, command, data, cbReq));
744	return ENOMEM;
745	}
746
747	err = copyin(pvUser, pHdr, Hdr.cbIn);
748	if (err != 0)
749	{
750	RTMemTmpFree(pHdr);
751	return err;
752	}
753
754	if (Hdr.cbIn < cbReq)
755	memset((uint8_t *)pHdr + Hdr.cbIn, '\0', cbReq - Hdr.cbIn);
756	}
757
758	/*
759	* Process the IOCtl.
760	*/
761	rc = VGDrvCommonIoCtl(command, &g_DevExt, fdata->session, pHdr, cbReq);
762	if (RT_SUCCESS(rc))
763	{
764	err = 0;
765
766	/*
767	* If unbuffered, copy back the result before returning.
768	*/
769	if (pvUser != NULL)
770	{
771	size_t cbOut = pHdr->cbOut;
772	if (cbOut > cbReq)
773	{
774	LogRel(("%s: command=%#lx data=%p: too much output: %zu > %zu\n",
775	__func__, command, data, cbOut, cbReq));
776	cbOut = cbReq;
777	}
778
779	err = copyout(pHdr, pvUser, cbOut);
780	RTMemTmpFree(pHdr);
781	}
782	}
783	else
784	{
785	LogRel(("%s: command=%#lx data=%p: error %Rrc\n",
786	__func__, command, data, rc));
787
788	if (pvUser != NULL)
789	RTMemTmpFree(pHdr);
790
791	err = RTErrConvertToErrno(rc);
792	}
793
794	return err;
795	}
796
797	static int VBoxGuestNetBSDPoll(struct file *fp, int events)
798	{
799	struct vboxguest_fdata *fdata = fp->f_data;
800	vboxguest_softc *sc = fdata->sc;
801
802	int rc = 0;
803	int events_processed;
804
805	uint32_t u32CurSeq;
806
807	LogFlow((DEVICE_NAME ": %s\n", __func__));
808
809	u32CurSeq = ASMAtomicUoReadU32(&g_DevExt.u32MousePosChangedSeq);
810	if (fdata->session->u32MousePosChangedSeq != u32CurSeq)
811	{
812	events_processed = events & (POLLIN \| POLLRDNORM);
813	fdata->session->u32MousePosChangedSeq = u32CurSeq;
814	}
815	else
816	{
817	events_processed = 0;
818
819	selrecord(curlwp, &g_SelInfo);
820	}
821
822	return events_processed;
823	}
824
825
826	/**
827	* @note This code is duplicated on other platforms with variations, so please
828	* keep them all up to date when making changes!
829	*/
830	int VBOXCALL VBoxGuestIDC(void *pvSession, uintptr_t uReq, PVBGLREQHDR pReqHdr, size_t cbReq)
831	{
832	/*
833	* Simple request validation (common code does the rest).
834	*/
835	int rc;
836	if ( RT_VALID_PTR(pReqHdr)
837	&& cbReq >= sizeof(*pReqHdr))
838	{
839	/*
840	* All requests except the connect one requires a valid session.
841	*/
842	PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)pvSession;
843	if (pSession)
844	{
845	if ( RT_VALID_PTR(pSession)
846	&& pSession->pDevExt == &g_DevExt)
847	rc = VGDrvCommonIoCtl(uReq, &g_DevExt, pSession, pReqHdr, cbReq);
848	else
849	rc = VERR_INVALID_HANDLE;
850	}
851	else if (uReq == VBGL_IOCTL_IDC_CONNECT)
852	{
853	rc = VGDrvCommonCreateKernelSession(&g_DevExt, &pSession);
854	if (RT_SUCCESS(rc))
855	{
856	rc = VGDrvCommonIoCtl(uReq, &g_DevExt, pSession, pReqHdr, cbReq);
857	if (RT_FAILURE(rc))
858	VGDrvCommonCloseSession(&g_DevExt, pSession);
859	}
860	}
861	else
862	rc = VERR_INVALID_HANDLE;
863	}
864	else
865	rc = VERR_INVALID_POINTER;
866	return rc;
867	}
868
869
870	MODULE(MODULE_CLASS_DRIVER, vboxguest, "pci");
871
872	static const struct cfiattrdata wsmousedevcf_iattrdata = {
873	"wsmousedev", 1, {
874	{ "mux", "0", 0 },
875	}
876	};
877
878	/* device vboxguest: wsmousedev */
879	static const struct cfiattrdata * const vboxguest_attrs[] = { &wsmousedevcf_iattrdata, NULL };
880	CFDRIVER_DECL(vboxguest, DV_DULL, vboxguest_attrs);
881
882	static struct cfdriver * const cfdriver_ioconf_vboxguest[] = {
883	&vboxguest_cd, NULL
884	};
885
886
887	static const struct cfparent vboxguest_pspec = {
888	"pci", "pci", DVUNIT_ANY
889	};
890	static int vboxguest_loc[] = { -1, -1 };
891
892
893	static const struct cfparent wsmousedev_pspec = {
894	"wsmousedev", "vboxguest", DVUNIT_ANY
895	};
896	static int wsmousedev_loc[] = { 0 };
897
898
899	static struct cfdata cfdata_ioconf_vboxguest[] = {
900	/* vboxguest0 at pci? dev ? function ? */
901	{
902	.cf_name = "vboxguest",
903	.cf_atname = "vboxguest",
904	.cf_unit = 0, /* Only unit 0 is ever used */
905	.cf_fstate = FSTATE_NOTFOUND,
906	.cf_loc = vboxguest_loc,
907	.cf_flags = 0,
908	.cf_pspec = &vboxguest_pspec,
909	},
910
911	/* wsmouse* at vboxguest? */
912	{ "wsmouse", "wsmouse", 0, FSTATE_STAR, wsmousedev_loc, 0, &wsmousedev_pspec },
913
914	{ NULL, NULL, 0, 0, NULL, 0, NULL }
915	};
916
917	static struct cfattach * const vboxguest_cfattachinit[] = {
918	&vboxguest_ca, NULL
919	};
920
921	static const struct cfattachinit cfattach_ioconf_vboxguest[] = {
922	{ "vboxguest", vboxguest_cfattachinit },
923	{ NULL, NULL }
924	};
925
926	static int
927	vboxguest_modcmd(modcmd_t cmd, void *opaque)
928	{
929	devmajor_t bmajor, cmajor;
930	register_t retval;
931	int error;
932
933	LogFlow((DEVICE_NAME ": %s\n", __func__));
934
935	switch (cmd)
936	{
937	case MODULE_CMD_INIT:
938	error = config_init_component(cfdriver_ioconf_vboxguest,
939	cfattach_ioconf_vboxguest,
940	cfdata_ioconf_vboxguest);
941	if (error)
942	break;
943
944	bmajor = cmajor = NODEVMAJOR;
945	error = devsw_attach("vboxguest",
946	NULL, &bmajor,
947	&g_VBoxGuestNetBSDChrDevSW, &cmajor);
948	if (error)
949	{
950	if (error == EEXIST)
951	error = 0; /* maybe built-in ... improve eventually */
952	else
953	break;
954	}
955
956	error = do_sys_mknod(curlwp, "/dev/vboxguest",
957	0666\|S_IFCHR, makedev(cmajor, 0),
958	&retval, UIO_SYSSPACE);
959	if (error == EEXIST)
960	error = 0;
961	break;
962
963	case MODULE_CMD_FINI:
964	error = config_fini_component(cfdriver_ioconf_vboxguest,
965	cfattach_ioconf_vboxguest,
966	cfdata_ioconf_vboxguest);
967	if (error)
968	break;
969
970	devsw_detach(NULL, &g_VBoxGuestNetBSDChrDevSW);
971	break;
972
973	default:
974	return ENOTTY;
975	}
976	return error;
977	}

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source: vbox/trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-netbsd.c@ 70059

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