VBoxGuest-netbsd.c@ 70048

Last change on this file since 70048 was 70048, checked in by vboxsync, 7 years ago
VBoxGuest-netbsd.c: give mem bus space members their usual names. Retire otherwise unused pMMIOBase (the actuall address is obtained via bus_space_vaddr).
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 26.2 KB

Line
1	/* $Id: VBoxGuest-netbsd.c 70048 2017-12-09 01:57:49Z 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_MAPREG_START, PCI_MAPREG_TYPE_IO, 0,
280	&sc->sc_iot, &sc->sc_ioh,
281	&sc->sc_iobase, &sc->sc_iosize) == 0);
282
283	if (ioh_valid)
284	{
285
286	/*
287	* Map the MMIO region.
288	*/
289	memh_valid = (pci_mapreg_map(pa, PCI_MAPREG_START+4, PCI_MAPREG_TYPE_MEM, BUS_SPACE_MAP_LINEAR,
290	&sc->sc_memt, &sc->sc_memh,
291	NULL, &sc->sc_memsize) == 0);
292	if (memh_valid)
293	{
294	/*
295	* Call the common device extension initializer.
296	*/
297	rc = VGDrvCommonInitDevExt(&g_DevExt, sc->sc_iobase,
298	bus_space_vaddr(sc->sc_memt, sc->sc_memh),
299	sc->sc_memsize,
300	#if ARCH_BITS == 64
301	VBOXOSTYPE_NetBSD_x64,
302	#else
303	VBOXOSTYPE_NetBSD,
304	#endif
305	VMMDEV_EVENT_MOUSE_POSITION_CHANGED);
306	if (RT_SUCCESS(rc))
307	{
308	/*
309	* Add IRQ of VMMDev.
310	*/
311	rc = VBoxGuestNetBSDAddIRQ(sc, pa);
312	if (RT_SUCCESS(rc))
313	{
314	sc->vboxguest_state \|= VBOXGUEST_STATE_INITOK;
315	VBoxGuestNetBSDWsmAttach(sc);
316
317	g_SC = sc;
318	return;
319	}
320	VGDrvCommonDeleteDevExt(&g_DevExt);
321	}
322	else
323	{
324	aprint_error_dev(sc->sc_dev, "init failed\n");
325	}
326	bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize);
327	}
328	else
329	{
330	aprint_error_dev(sc->sc_dev, "MMIO mapping failed\n");
331	}
332	bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_iosize);
333	}
334	else
335	{
336	aprint_error_dev(sc->sc_dev, "IO mapping failed\n");
337	}
338
339	RTR0Term();
340	return;
341	}
342
343
344	/**
345	* Sets IRQ for VMMDev.
346	*
347	* @returns NetBSD error code.
348	* @param vboxguest Pointer to the state info structure.
349	* @param pa Pointer to the PCI attach arguments.
350	*/
351	static int VBoxGuestNetBSDAddIRQ(vboxguest_softc sc, struct pci_attach_args pa)
352	{
353	int iResId = 0;
354	int rc = 0;
355	const char *intrstr;
356	#if __NetBSD_Prereq__(6, 99, 39)
357	char intstrbuf[100];
358	#endif
359
360	LogFlow((DEVICE_NAME ": %s\n", __func__));
361
362	if (pci_intr_map(pa, &sc->ih))
363	{
364	aprint_error_dev(sc->sc_dev, "couldn't map interrupt.\n");
365	return VERR_DEV_IO_ERROR;
366	}
367
368	intrstr = pci_intr_string(sc->sc_pc, sc->ih
369	#if __NetBSD_Prereq__(6, 99, 39)
370	, intstrbuf, sizeof(intstrbuf)
371	#endif
372	);
373	aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
374
375	sc->pfnIrqHandler = pci_intr_establish(sc->sc_pc, sc->ih, IPL_BIO, VBoxGuestNetBSDISR, sc);
376	if (sc->pfnIrqHandler == NULL)
377	{
378	aprint_error_dev(sc->sc_dev, "couldn't establish interrupt\n");
379	return VERR_DEV_IO_ERROR;
380	}
381
382	return VINF_SUCCESS;
383	}
384
385
386	/*
387	* Optionally attach wsmouse(4) device as a child.
388	*/
389	static void VBoxGuestNetBSDWsmAttach(vboxguest_softc *sc)
390	{
391	struct wsmousedev_attach_args am = { &vboxguest_wsm_accessops, sc };
392
393	PVBOXGUESTSESSION session = NULL;
394	VMMDevReqMouseStatus *req = NULL;
395	int rc;
396
397	rc = VGDrvCommonCreateKernelSession(&g_DevExt, &session);
398	if (RT_FAILURE(rc))
399	goto fail;
400
401	rc = VbglR0GRAlloc((VMMDevRequestHeader *)&req, sizeof(req),
402	VMMDevReq_GetMouseStatus);
403	if (RT_FAILURE(rc))
404	goto fail;
405
406	sc->sc_wsmousedev = config_found_ia(sc->sc_dev, "wsmousedev", &am, wsmousedevprint);
407	if (sc->sc_wsmousedev == NULL)
408	goto fail;
409
410	sc->sc_session = session;
411	sc->sc_vmmmousereq = req;
412
413	tpcalib_init(&sc->sc_tpcalib);
414	tpcalib_ioctl(&sc->sc_tpcalib, WSMOUSEIO_SCALIBCOORDS,
415	&vboxguest_wsm_default_calib, 0, 0);
416	return;
417
418	fail:
419	if (session != NULL)
420	VGDrvCommonCloseSession(&g_DevExt, session);
421	if (req != NULL)
422	VbglR0GRFree((VMMDevRequestHeader *)req);
423	}
424
425
426	static int VBoxGuestNetBSDDetach(device_t self, int flags)
427	{
428	vboxguest_softc *sc;
429	sc = device_private(self);
430
431	LogFlow((DEVICE_NAME ": %s\n", __func__));
432
433	if (cUsers > 0)
434	return EBUSY;
435
436	if ((sc->vboxguest_state & VBOXGUEST_STATE_INITOK) == 0)
437	return 0;
438
439	/*
440	* Reverse what we did in VBoxGuestNetBSDAttach.
441	*/
442	if (sc->sc_vmmmousereq != NULL)
443	VbglR0GRFree((VMMDevRequestHeader *)sc->sc_vmmmousereq);
444
445	VBoxGuestNetBSDRemoveIRQ(sc);
446
447	VGDrvCommonDeleteDevExt(&g_DevExt);
448
449	bus_space_unmap(sc->sc_memt, sc->sc_memh, sc->sc_memsize);
450	bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_iosize);
451
452	RTR0Term();
453
454	return config_detach_children(self, flags);
455	}
456
457
458	/**
459	* Removes IRQ for VMMDev.
460	*
461	* @param vboxguest Opaque pointer to the state info structure.
462	*/
463	static void VBoxGuestNetBSDRemoveIRQ(vboxguest_softc *sc)
464	{
465	LogFlow((DEVICE_NAME ": %s\n", __func__));
466
467	if (sc->pfnIrqHandler)
468	{
469	pci_intr_disestablish(sc->sc_pc, sc->pfnIrqHandler);
470	}
471	}
472
473
474	/**
475	* Interrupt service routine.
476	*
477	* @returns Whether the interrupt was from VMMDev.
478	* @param pvState Opaque pointer to the device state.
479	*/
480	static int VBoxGuestNetBSDISR(void *pvState)
481	{
482	LogFlow((DEVICE_NAME ": %s: pvState=%p\n", __func__, pvState));
483
484	bool fOurIRQ = VGDrvCommonISR(&g_DevExt);
485
486	return fOurIRQ ? 0 : 1;
487	}
488
489
490	/*
491	* Called by VGDrvCommonISR() if mouse position changed
492	*/
493	void VGDrvNativeISRMousePollEvent(PVBOXGUESTDEVEXT pDevExt)
494	{
495	vboxguest_softc *sc = g_SC;
496
497	LogFlow((DEVICE_NAME ": %s\n", __func__));
498
499	/*
500	* Wake up poll waiters.
501	*/
502	selnotify(&g_SelInfo, 0, 0);
503
504	if (sc->sc_vmmmousereq != NULL) {
505	int x, y;
506	int rc;
507
508	sc->sc_vmmmousereq->mouseFeatures = 0;
509	sc->sc_vmmmousereq->pointerXPos = 0;
510	sc->sc_vmmmousereq->pointerYPos = 0;
511
512	rc = VbglR0GRPerform(&sc->sc_vmmmousereq->header);
513	if (RT_FAILURE(rc))
514	return;
515
516	tpcalib_trans(&sc->sc_tpcalib,
517	sc->sc_vmmmousereq->pointerXPos,
518	sc->sc_vmmmousereq->pointerYPos,
519	&x, &y);
520
521	wsmouse_input(sc->sc_wsmousedev,
522	0, /* buttons */
523	x, y,
524	0, 0, /* z, w */
525	WSMOUSE_INPUT_ABSOLUTE_X \| WSMOUSE_INPUT_ABSOLUTE_Y);
526	}
527	}
528
529
530	static int VBoxGuestNetBSDSetMouseStatus(vboxguest_softc *sc, uint32_t fStatus)
531	{
532	VBGLIOCSETMOUSESTATUS Req;
533	int rc;
534
535	VBGLREQHDR_INIT(&Req.Hdr, SET_MOUSE_STATUS);
536	Req.u.In.fStatus = fStatus;
537	rc = VGDrvCommonIoCtl(VBGL_IOCTL_SET_MOUSE_STATUS,
538	&g_DevExt,
539	sc->sc_session,
540	&Req.Hdr, sizeof(Req));
541	if (RT_SUCCESS(rc))
542	rc = Req.Hdr.rc;
543
544	return rc;
545	}
546
547
548	static int
549	VBoxGuestNetBSDWsmEnable(void *cookie)
550	{
551	vboxguest_softc *sc = cookie;
552	int rc;
553
554	rc = VBoxGuestNetBSDSetMouseStatus(sc, VMMDEV_MOUSE_GUEST_CAN_ABSOLUTE
555	\| VMMDEV_MOUSE_NEW_PROTOCOL);
556	if (RT_FAILURE(rc))
557	return RTErrConvertToErrno(rc);
558
559	return 0;
560	}
561
562
563	static void
564	VBoxGuestNetBSDWsmDisable(void *cookie)
565	{
566	vboxguest_softc *sc = cookie;
567	VBoxGuestNetBSDSetMouseStatus(sc, 0);
568	}
569
570
571	static int
572	VBoxGuestNetBSDWsmIOCtl(void cookie, u_long cmd, void data, int flag, struct lwp *l)
573	{
574	vboxguest_softc *sc = cookie;
575
576	switch (cmd) {
577	case WSMOUSEIO_GTYPE:
578	(u_int )data = WSMOUSE_TYPE_TPANEL;
579	break;
580
581	case WSMOUSEIO_SCALIBCOORDS:
582	case WSMOUSEIO_GCALIBCOORDS:
583	return tpcalib_ioctl(&sc->sc_tpcalib, cmd, data, flag, l);
584
585	default:
586	return EPASSTHROUGH;
587	}
588	return 0;
589	}
590
591
592	/**
593	* File open handler
594	*
595	*/
596	static int VBoxGuestNetBSDOpen(dev_t device, int flags, int fmt, struct lwp *process)
597	{
598	int rc;
599	vboxguest_softc *sc;
600	struct vboxguest_fdata *fdata;
601	file_t *fp;
602	int fd, error;
603
604	LogFlow((DEVICE_NAME ": %s\n", __func__));
605
606	if ((sc = device_lookup_private(&vboxguest_cd, minor(device))) == NULL)
607	{
608	printf("device_lookup_private failed\n");
609	return (ENXIO);
610	}
611
612	if ((sc->vboxguest_state & VBOXGUEST_STATE_INITOK) == 0)
613	{
614	aprint_error_dev(sc->sc_dev, "device not configured\n");
615	return (ENXIO);
616	}
617
618	fdata = kmem_alloc(sizeof(*fdata), KM_SLEEP);
619	if (fdata == NULL)
620	{
621	return (ENOMEM);
622	}
623
624	fdata->sc = sc;
625
626	if ((error = fd_allocfile(&fp, &fd)) != 0)
627	{
628	kmem_free(fdata, sizeof(*fdata));
629	return error;
630	}
631
632	/*
633	* Create a new session.
634	*/
635	rc = VGDrvCommonCreateUserSession(&g_DevExt, &fdata->session);
636	if (! RT_SUCCESS(rc))
637	{
638	aprint_error_dev(sc->sc_dev, "VBox session creation failed\n");
639	closef(fp); /* ??? */
640	kmem_free(fdata, sizeof(*fdata));
641	return RTErrConvertToErrno(rc);
642	}
643	ASMAtomicIncU32(&cUsers);
644	return fd_clone(fp, fd, flags, &vboxguest_fileops, fdata);
645
646	}
647
648	/**
649	* File close handler
650	*
651	*/
652	static int VBoxGuestNetBSDClose(struct file *fp)
653	{
654	struct vboxguest_fdata *fdata = fp->f_data;
655	vboxguest_softc *sc = fdata->sc;
656
657	LogFlow((DEVICE_NAME ": %s\n", __func__));
658
659	VGDrvCommonCloseSession(&g_DevExt, fdata->session);
660	ASMAtomicDecU32(&cUsers);
661
662	kmem_free(fdata, sizeof(*fdata));
663
664	return 0;
665	}
666
667	/**
668	* IOCTL handler
669	*
670	*/
671	static int VBoxGuestNetBSDIOCtl(struct file fp, u_long command, void data)
672	{
673	struct vboxguest_fdata *fdata = fp->f_data;
674
675	if (VBGL_IOCTL_IS_FAST(command))
676	return VGDrvCommonIoCtlFast(command, &g_DevExt, fdata->session);
677
678	return VBoxGuestNetBSDIOCtlSlow(fdata, command, data);
679	}
680
681	static int VBoxGuestNetBSDIOCtlSlow(struct vboxguest_fdata fdata, u_long command, void data)
682	{
683	vboxguest_softc *sc = fdata->sc;
684	size_t cbReq = IOCPARM_LEN(command);
685	PVBGLREQHDR pHdr = NULL;
686	void *pvUser = NULL;
687	int err, rc;
688
689	LogFlow(("%s: command=%#lx data=%p\n", __func__, command, data));
690
691	/*
692	* Buffered request?
693	*/
694	if ((command & IOC_DIRMASK) == IOC_INOUT)
695	{
696	/* will be validated by VGDrvCommonIoCtl() */
697	pHdr = (PVBGLREQHDR)data;
698	}
699
700	/*
701	* Big unbuffered request? "data" is the userland pointer.
702	*/
703	else if ((command & IOC_DIRMASK) == IOC_VOID && cbReq != 0)
704	{
705	/*
706	* Read the header, validate it and figure out how much that
707	* needs to be buffered.
708	*/
709	VBGLREQHDR Hdr;
710
711	if (RT_UNLIKELY(cbReq < sizeof(Hdr)))
712	return ENOTTY;
713
714	pvUser = data;
715	err = copyin(pvUser, &Hdr, sizeof(Hdr));
716	if (RT_UNLIKELY(err != 0))
717	return err;
718
719	if (RT_UNLIKELY(Hdr.uVersion != VBGLREQHDR_VERSION))
720	return ENOTTY;
721
722	if (cbReq > 16 * _1M)
723	return EINVAL;
724
725	if (Hdr.cbOut == 0)
726	Hdr.cbOut = Hdr.cbIn;
727
728	if (RT_UNLIKELY( Hdr.cbIn < sizeof(Hdr) \|\| Hdr.cbIn > cbReq
729	\|\| Hdr.cbOut < sizeof(Hdr) \|\| Hdr.cbOut > cbReq))
730	return EINVAL;
731
732	/*
733	* Allocate buffer and copy in the data.
734	*/
735	cbReq = RT_MAX(Hdr.cbIn, Hdr.cbOut);
736
737	pHdr = (PVBGLREQHDR)RTMemTmpAlloc(cbReq);
738	if (RT_UNLIKELY(pHdr == NULL))
739	{
740	LogRel(("%s: command=%#lx data=%p: unable to allocate %zu bytes\n",
741	__func__, command, data, cbReq));
742	return ENOMEM;
743	}
744
745	err = copyin(pvUser, pHdr, Hdr.cbIn);
746	if (err != 0)
747	{
748	RTMemTmpFree(pHdr);
749	return err;
750	}
751
752	if (Hdr.cbIn < cbReq)
753	memset((uint8_t *)pHdr + Hdr.cbIn, '\0', cbReq - Hdr.cbIn);
754	}
755
756	/*
757	* Process the IOCtl.
758	*/
759	rc = VGDrvCommonIoCtl(command, &g_DevExt, fdata->session, pHdr, cbReq);
760	if (RT_SUCCESS(rc))
761	{
762	err = 0;
763
764	/*
765	* If unbuffered, copy back the result before returning.
766	*/
767	if (pvUser != NULL)
768	{
769	size_t cbOut = pHdr->cbOut;
770	if (cbOut > cbReq)
771	{
772	LogRel(("%s: command=%#lx data=%p: too much output: %zu > %zu\n",
773	__func__, command, data, cbOut, cbReq));
774	cbOut = cbReq;
775	}
776
777	err = copyout(pHdr, pvUser, cbOut);
778	RTMemTmpFree(pHdr);
779	}
780	}
781	else
782	{
783	LogRel(("%s: command=%#lx data=%p: error %Rrc\n",
784	__func__, command, data, rc));
785
786	if (pvUser != NULL)
787	RTMemTmpFree(pHdr);
788
789	err = RTErrConvertToErrno(rc);
790	}
791
792	return err;
793	}
794
795	static int VBoxGuestNetBSDPoll(struct file *fp, int events)
796	{
797	struct vboxguest_fdata *fdata = fp->f_data;
798	vboxguest_softc *sc = fdata->sc;
799
800	int rc = 0;
801	int events_processed;
802
803	uint32_t u32CurSeq;
804
805	LogFlow((DEVICE_NAME ": %s\n", __func__));
806
807	u32CurSeq = ASMAtomicUoReadU32(&g_DevExt.u32MousePosChangedSeq);
808	if (fdata->session->u32MousePosChangedSeq != u32CurSeq)
809	{
810	events_processed = events & (POLLIN \| POLLRDNORM);
811	fdata->session->u32MousePosChangedSeq = u32CurSeq;
812	}
813	else
814	{
815	events_processed = 0;
816
817	selrecord(curlwp, &g_SelInfo);
818	}
819
820	return events_processed;
821	}
822
823
824	/**
825	* @note This code is duplicated on other platforms with variations, so please
826	* keep them all up to date when making changes!
827	*/
828	int VBOXCALL VBoxGuestIDC(void *pvSession, uintptr_t uReq, PVBGLREQHDR pReqHdr, size_t cbReq)
829	{
830	/*
831	* Simple request validation (common code does the rest).
832	*/
833	int rc;
834	if ( RT_VALID_PTR(pReqHdr)
835	&& cbReq >= sizeof(*pReqHdr))
836	{
837	/*
838	* All requests except the connect one requires a valid session.
839	*/
840	PVBOXGUESTSESSION pSession = (PVBOXGUESTSESSION)pvSession;
841	if (pSession)
842	{
843	if ( RT_VALID_PTR(pSession)
844	&& pSession->pDevExt == &g_DevExt)
845	rc = VGDrvCommonIoCtl(uReq, &g_DevExt, pSession, pReqHdr, cbReq);
846	else
847	rc = VERR_INVALID_HANDLE;
848	}
849	else if (uReq == VBGL_IOCTL_IDC_CONNECT)
850	{
851	rc = VGDrvCommonCreateKernelSession(&g_DevExt, &pSession);
852	if (RT_SUCCESS(rc))
853	{
854	rc = VGDrvCommonIoCtl(uReq, &g_DevExt, pSession, pReqHdr, cbReq);
855	if (RT_FAILURE(rc))
856	VGDrvCommonCloseSession(&g_DevExt, pSession);
857	}
858	}
859	else
860	rc = VERR_INVALID_HANDLE;
861	}
862	else
863	rc = VERR_INVALID_POINTER;
864	return rc;
865	}
866
867
868	MODULE(MODULE_CLASS_DRIVER, vboxguest, "pci");
869
870	static const struct cfiattrdata wsmousedevcf_iattrdata = {
871	"wsmousedev", 1, {
872	{ "mux", "0", 0 },
873	}
874	};
875
876	/* device vboxguest: wsmousedev */
877	static const struct cfiattrdata * const vboxguest_attrs[] = { &wsmousedevcf_iattrdata, NULL };
878	CFDRIVER_DECL(vboxguest, DV_DULL, vboxguest_attrs);
879
880	static struct cfdriver * const cfdriver_ioconf_vboxguest[] = {
881	&vboxguest_cd, NULL
882	};
883
884
885	static const struct cfparent vboxguest_pspec = {
886	"pci", "pci", DVUNIT_ANY
887	};
888	static int vboxguest_loc[] = { -1, -1 };
889
890
891	static const struct cfparent wsmousedev_pspec = {
892	"wsmousedev", "vboxguest", DVUNIT_ANY
893	};
894	static int wsmousedev_loc[] = { 0 };
895
896
897	static struct cfdata cfdata_ioconf_vboxguest[] = {
898	/* vboxguest0 at pci? dev ? function ? */
899	{
900	.cf_name = "vboxguest",
901	.cf_atname = "vboxguest",
902	.cf_unit = 0, /* Only unit 0 is ever used */
903	.cf_fstate = FSTATE_NOTFOUND,
904	.cf_loc = vboxguest_loc,
905	.cf_flags = 0,
906	.cf_pspec = &vboxguest_pspec,
907	},
908
909	/* wsmouse* at vboxguest? */
910	{ "wsmouse", "wsmouse", 0, FSTATE_STAR, wsmousedev_loc, 0, &wsmousedev_pspec },
911
912	{ NULL, NULL, 0, 0, NULL, 0, NULL }
913	};
914
915	static struct cfattach * const vboxguest_cfattachinit[] = {
916	&vboxguest_ca, NULL
917	};
918
919	static const struct cfattachinit cfattach_ioconf_vboxguest[] = {
920	{ "vboxguest", vboxguest_cfattachinit },
921	{ NULL, NULL }
922	};
923
924	static int
925	vboxguest_modcmd(modcmd_t cmd, void *opaque)
926	{
927	devmajor_t bmajor, cmajor;
928	register_t retval;
929	int error;
930
931	LogFlow((DEVICE_NAME ": %s\n", __func__));
932
933	switch (cmd)
934	{
935	case MODULE_CMD_INIT:
936	error = config_init_component(cfdriver_ioconf_vboxguest,
937	cfattach_ioconf_vboxguest,
938	cfdata_ioconf_vboxguest);
939	if (error)
940	break;
941
942	bmajor = cmajor = NODEVMAJOR;
943	error = devsw_attach("vboxguest",
944	NULL, &bmajor,
945	&g_VBoxGuestNetBSDChrDevSW, &cmajor);
946	if (error)
947	{
948	if (error == EEXIST)
949	error = 0; /* maybe built-in ... improve eventually */
950	else
951	break;
952	}
953
954	error = do_sys_mknod(curlwp, "/dev/vboxguest",
955	0666\|S_IFCHR, makedev(cmajor, 0),
956	&retval, UIO_SYSSPACE);
957	if (error == EEXIST)
958	error = 0;
959	break;
960
961	case MODULE_CMD_FINI:
962	error = config_fini_component(cfdriver_ioconf_vboxguest,
963	cfattach_ioconf_vboxguest,
964	cfdata_ioconf_vboxguest);
965	if (error)
966	break;
967
968	devsw_detach(NULL, &g_VBoxGuestNetBSDChrDevSW);
969	break;
970
971	default:
972	return ENOTTY;
973	}
974	return error;
975	}

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/Additions/common/VBoxGuest/VBoxGuest-netbsd.c@ 70048

Download in other formats: