pnp.c@ 16774

Last change on this file since 16774 was 7261, checked in by vboxsync, 17 years ago
Additions/x11: ifdef-ed some unnecessary debug logging in the mouse drivers
Property svn:eol-style set to `native`
File size: 20.0 KB

Line
1	/*
2	* Copyright 1998 by Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
3	*
4	* Permission to use, copy, modify, distribute, and sell this software and its
5	* documentation for any purpose is hereby granted without fee, provided that
6	* the above copyright notice appear in all copies and that both that
7	* copyright notice and this permission notice appear in supporting
8	* documentation, and that the name of Kazutaka YOKOTA not be used in
9	* advertising or publicity pertaining to distribution of the software without
10	* specific, written prior permission. Kazutaka YOKOTA makes no representations
11	* about the suitability of this software for any purpose. It is provided
12	* "as is" without express or implied warranty.
13	*
14	* KAZUTAKA YOKOTA DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15	* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16	* EVENT SHALL KAZUTAKA YOKOTA BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17	* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18	* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19	* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
20	* PERFORMANCE OF THIS SOFTWARE.
21	*/
22
23	#ifdef HAVE_CONFIG_H
24	#include "config.h"
25	#endif
26
27	#define NEED_EVENTS
28	#include <stdio.h>
29	#include <X11/X.h>
30	#include <X11/Xproto.h>
31	#include "inputstr.h"
32	#include "scrnintstr.h"
33	#include "xf86.h"
34	#include "xf86Priv.h"
35	#include "xf86Xinput.h"
36	#include "xf86_OSproc.h"
37	#include "xf86OSmouse.h"
38	#include "mouse.h"
39	#include "mousePriv.h"
40
41	#ifdef MOUSEINITDEBUG
42	# define DEBUG
43	# define EXTMOUSEDEBUG
44	#endif
45
46	#ifdef VBOX
47	/* Xorg 7.1 does not include xf86_ansic.h anymore. Don't reinclude this
48	* file as it renamed ANSI C functions to xf86. /
49	extern void usleep(unsigned long);
50	extern int strncmp(const char,const char,size_t);
51	#endif
52
53	/* serial PnP ID string */
54	typedef struct {
55	int revision; /* PnP revision, 100 for 1.00 */
56	char eisaid; / EISA ID including mfr ID and product ID */
57	char serial; / serial No, optional */
58	char class; / device class, optional */
59	char compat; / list of compatible drivers, optional */
60	char description; / product description, optional */
61	int neisaid; /* length of the above fields... */
62	int nserial;
63	int nclass;
64	int ncompat;
65	int ndescription;
66	} pnpid_t;
67
68	/* symbol table entry */
69	typedef struct {
70	char *name;
71	MouseProtocolID val;
72	} symtab_t;
73
74	/* PnP EISA/product IDs */
75	static symtab_t pnpprod[] = {
76	{ "KML0001", PROT_THINKING }, /* Kensignton ThinkingMouse */
77	{ "MSH0001", PROT_IMSERIAL }, /* MS IntelliMouse */
78	{ "MSH0004", PROT_IMSERIAL }, /* MS IntelliMouse TrackBall */
79	{ "KYEEZ00", PROT_MS }, /* Genius EZScroll */
80	{ "KYE0001", PROT_MS }, /* Genius PnP Mouse */
81	{ "KYE0002", PROT_MS }, /* MouseSystem (Genius?) SmartScroll */
82	{ "KYE0003", PROT_IMSERIAL }, /* Genius NetMouse */
83	{ "LGI800C", PROT_IMSERIAL }, /* Logitech MouseMan (4 button model) */
84	{ "LGI8033", PROT_IMSERIAL }, /* Logitech Cordless MouseMan Wheel */
85	{ "LGI8050", PROT_IMSERIAL }, /* Logitech MouseMan+ */
86	{ "LGI8051", PROT_IMSERIAL }, /* Logitech FirstMouse+ */
87	{ "LGI8001", PROT_LOGIMAN }, /* Logitech serial */
88	{ "A4W0005", PROT_IMSERIAL }, /* A4 Tech 4D/4D+ Mouse */
89	{ "PEC9802", PROT_IMSERIAL }, /* 8D Scroll Mouse */
90
91	{ "PNP0F00", PROT_BM }, /* MS bus */
92	{ "PNP0F01", PROT_MS }, /* MS serial */
93	{ "PNP0F02", PROT_BM }, /* MS InPort */
94	{ "PNP0F03", PROT_PS2 }, /* MS PS/2 */
95	/*
96	* EzScroll returns PNP0F04 in the compatible device field; but it
97	* doesn't look compatible... XXX
98	*/
99	{ "PNP0F04", PROT_MSC }, /* MouseSystems */
100	{ "PNP0F05", PROT_MSC }, /* MouseSystems */
101	#ifdef notyet
102	{ "PNP0F06", PROT_??? }, /* Genius Mouse */
103	{ "PNP0F07", PROT_??? }, /* Genius Mouse */
104	#endif
105	{ "PNP0F08", PROT_LOGIMAN }, /* Logitech serial */
106	{ "PNP0F09", PROT_MS }, /* MS BallPoint serial */
107	{ "PNP0F0A", PROT_MS }, /* MS PnP serial */
108	{ "PNP0F0B", PROT_MS }, /* MS PnP BallPoint serial */
109	{ "PNP0F0C", PROT_MS }, /* MS serial comatible */
110	{ "PNP0F0D", PROT_BM }, /* MS InPort comatible */
111	{ "PNP0F0E", PROT_PS2 }, /* MS PS/2 comatible */
112	{ "PNP0F0F", PROT_MS }, /* MS BallPoint comatible */
113	#ifdef notyet
114	{ "PNP0F10", PROT_??? }, /* TI QuickPort */
115	#endif
116	{ "PNP0F11", PROT_BM }, /* MS bus comatible */
117	{ "PNP0F12", PROT_PS2 }, /* Logitech PS/2 */
118	{ "PNP0F13", PROT_PS2 }, /* PS/2 */
119	#ifdef notyet
120	{ "PNP0F14", PROT_??? }, /* MS Kids Mouse */
121	#endif
122	{ "PNP0F15", PROT_BM }, /* Logitech bus */
123	#ifdef notyet
124	{ "PNP0F16", PROT_??? }, /* Logitech SWIFT */
125	#endif
126	{ "PNP0F17", PROT_LOGIMAN }, /* Logitech serial compat */
127	{ "PNP0F18", PROT_BM }, /* Logitech bus compatible */
128	{ "PNP0F19", PROT_PS2 }, /* Logitech PS/2 compatible */
129	#ifdef notyet
130	{ "PNP0F1A", PROT_??? }, /* Logitech SWIFT compatible */
131	{ "PNP0F1B", PROT_??? }, /* HP Omnibook */
132	{ "PNP0F1C", PROT_??? }, /* Compaq LTE TrackBall PS/2 */
133	{ "PNP0F1D", PROT_??? }, /* Compaq LTE TrackBall serial */
134	{ "PNP0F1E", PROT_??? }, /* MS Kids Trackball */
135	#endif
136	{ NULL, PROT_UNKNOWN },
137	};
138
139	static const char *pnpSerial[] = {
140	"BaudRate", "1200",
141	"DataBits", "7",
142	"StopBits", "1",
143	"Parity", "None",
144	"FlowControl", "None",
145	"VTime", "0",
146	"VMin", "1",
147	NULL
148	};
149
150	static int pnpgets(InputInfoPtr, char , Bool prePNP);
151	static int pnpparse(InputInfoPtr, pnpid_t , char , int);
152	static MouseProtocolID prepnpparse(InputInfoPtr pInfo, char *buf);
153	static symtab_t pnpproto(pnpid_t );
154	static symtab_t gettoken(symtab_t , char *, int);
155	static MouseProtocolID getPs2ProtocolPnP(InputInfoPtr pInfo);
156	static MouseProtocolID probePs2ProtocolPnP(InputInfoPtr pInfo);
157
158	static MouseProtocolID
159	MouseGetSerialPnpProtocol(InputInfoPtr pInfo)
160	{
161	char buf[256]; /* PnP ID string may be up to 256 bytes long */
162	pnpid_t pnpid;
163	symtab_t *t;
164	int len;
165	Bool prePNP;
166
167	if ((len = pnpgets(pInfo, buf, &prePNP)) > 0)
168	{
169	if (!prePNP) {
170	if (pnpparse(pInfo, &pnpid, buf, len) &&
171	(t = pnpproto(&pnpid)) != NULL) {
172	xf86MsgVerb(X_INFO, 2, "%s: PnP-detected protocol ID: %d\n",
173	pInfo->name, t->val);
174	return (t->val);
175	}
176	} else
177	return prepnpparse(pInfo,buf);
178	}
179	return PROT_UNKNOWN;
180	}
181
182	MouseProtocolID
183	MouseGetPnpProtocol(InputInfoPtr pInfo)
184	{
185	MouseDevPtr pMse = pInfo->private;
186	mousePrivPtr mPriv = (mousePrivPtr)pMse->mousePriv;
187	MouseProtocolID val;
188	CARD32 last;
189
190	if ((val = MouseGetSerialPnpProtocol(pInfo)) != PROT_UNKNOWN) {
191	if (val == MouseGetSerialPnpProtocol(pInfo))
192	return val;
193	}
194
195	#if 1
196	last = mPriv->pnpLast;
197	mPriv->pnpLast = currentTime.milliseconds;
198
199	if (last) {
200	if (last - currentTime.milliseconds < 100
201	\|\| (mPriv->disablePnPauto
202	&& (last - currentTime.milliseconds < 10000))) {
203	#ifdef EXTMOUSEDEBUG
204	xf86ErrorF("Mouse: Disabling PnP\n");
205	#endif
206	mPriv->disablePnPauto = TRUE;
207	return PROT_UNKNOWN;
208	}
209	}
210
211	#ifdef EXTMOUSEDEBUG
212	if (mPriv->disablePnPauto)
213	xf86ErrorF("Mouse: Enabling PnP\n");
214	#endif
215	mPriv->disablePnPauto = FALSE;
216
217	if (mPriv->soft)
218	return getPs2ProtocolPnP(pInfo);
219	else
220	return probePs2ProtocolPnP(pInfo);
221	#else
222	return PROT_UNKNOWN;
223	#endif
224	}
225
226	/*
227	* Try to elicit a PnP ID as described in
228	* Microsoft, Hayes: "Plug and Play External COM Device Specification,
229	* rev 1.00", 1995.
230	*
231	* The routine does not fully implement the COM Enumerator as per Section
232	* 2.1 of the document. In particular, we don't have idle state in which
233	* the driver software monitors the com port for dynamic connection or
234	* removal of a device at the port, because `moused' simply quits if no
235	* device is found.
236	*
237	* In addition, as PnP COM device enumeration procedure slightly has
238	* changed since its first publication, devices which follow earlier
239	* revisions of the above spec. may fail to respond if the rev 1.0
240	* procedure is used. XXX
241	*/
242	static int
243	pnpgets(InputInfoPtr pInfo, char buf, Bool prePNP)
244	{
245	int i;
246	char c;
247	pointer pnpOpts;
248
249	#if 0
250	/*
251	* This is the procedure described in rev 1.0 of PnP COM device spec.
252	* Unfortunately, some devices which comform to earlier revisions of
253	* the spec gets confused and do not return the ID string...
254	*/
255
256	/* port initialization (2.1.2) */
257	if ((i = xf86GetSerialModemState(pInfo->fd)) == -1)
258	return 0;
259	i \|= XF86_M_DTR; /* DTR = 1 */
260	i &= ~XF86_M_RTS; /* RTS = 0 */
261	if (xf86SetSerialModemState(pInfo->fd, i) == -1)
262	goto disconnect_idle;
263	usleep(200000);
264	if ((i = xf86GetSerialModemState(pInfo->fd)) == -1 \|\|
265	(i & XF86_M_DSR) == 0)
266	goto disconnect_idle;
267
268	/* port setup, 1st phase (2.1.3) */
269	pnpOpts = xf86OptionListCreate(pnpSerial, -1, 1);
270	xf86SetSerial(pInfo->fd, pnpOpts);
271	i = TIOCM_DTR \| TIOCM_RTS; /* DTR = 0, RTS = 0 */
272	xf86SerialModemClearBits(pInfo->fd, i);
273	usleep(200000);
274	i = TIOCM_DTR; /* DTR = 1, RTS = 0 */
275	xf86SerialModemSetBits(pInfo->fd, i);
276	usleep(200000);
277
278	/* wait for response, 1st phase (2.1.4) */
279	xf86FlushInput(pInfo->fd);
280	i = TIOCM_RTS; /* DTR = 1, RTS = 1 */
281	xf86SerialModemSetBits(pInfo->fd, i);
282
283	/* try to read something */
284	if (xf86WaitForInput(pInfo->fd, 200000) <= 0) {
285
286	/* port setup, 2nd phase (2.1.5) */
287	i = TIOCM_DTR \| TIOCM_RTS; /* DTR = 0, RTS = 0 */
288	xf86SerialModemClearBits(pInfo->fd, i);
289	usleep(200000);
290
291	/* wait for respose, 2nd phase (2.1.6) */
292	xf86FlushInput(pInfo->fd);
293	i = TIOCM_DTR \| TIOCM_RTS; /* DTR = 1, RTS = 1 */
294	xf86SerialModemSetBits(pInfo->fd, i);
295
296	/* try to read something */
297	if (xf86WaitForInput(pInfo->fd, 200000) <= 0)
298	goto connect_idle;
299	}
300	#else
301	/*
302	* This is a simplified procedure; it simply toggles RTS.
303	*/
304
305	if ((i = xf86GetSerialModemState(pInfo->fd)) == -1)
306	return 0;
307	i \|= XF86_M_DTR; /* DTR = 1 */
308	i &= ~XF86_M_RTS; /* RTS = 0 */
309	if (xf86SetSerialModemState(pInfo->fd, i) == -1)
310	goto disconnect_idle;
311	usleep(200000);
312
313	pnpOpts = xf86OptionListCreate(pnpSerial, -1, 1);
314	xf86SetSerial(pInfo->fd, pnpOpts);
315
316	/* wait for respose */
317	xf86FlushInput(pInfo->fd);
318	i = XF86_M_DTR \| XF86_M_RTS; /* DTR = 1, RTS = 1 */
319	xf86SerialModemSetBits(pInfo->fd, i);
320
321	/* try to read something */
322	if (xf86WaitForInput(pInfo->fd, 200000) <= 0)
323	goto connect_idle;
324	#endif
325
326	/* collect PnP COM device ID (2.1.7) */
327	i = 0;
328	*prePNP = FALSE;
329
330	usleep(200000); /* the mouse must send `Begin ID' within 200msec */
331	while (xf86ReadSerial(pInfo->fd, &c, 1) == 1) {
332	/* we may see "M", or "M3..." before `Begin ID' */
333	if (c == 'M')
334	*prePNP = TRUE;
335
336	if ((c == 0x08) \|\| (c == 0x28)) { /* Begin ID */
337	*prePNP = FALSE;
338	buf[0] = c;
339	i = 1;
340	break;
341	}
342	if (*prePNP)
343	buf[i++] = c;
344
345	if (xf86WaitForInput(pInfo->fd, 200000) <= 0)
346	break;
347	}
348	if (i <= 0) {
349	/* we haven't seen `Begin ID' in time... */
350	goto connect_idle;
351	}
352	if (*prePNP)
353	return i;
354
355	++c; /* make it `End ID' */
356	for (;;) {
357	if (xf86WaitForInput(pInfo->fd, 200000) <= 0)
358	break;
359
360	xf86ReadSerial(pInfo->fd, &buf[i], 1);
361	if (buf[i++] == c) /* End ID */
362	break;
363	if (i >= 256)
364	break;
365	}
366	if (buf[i - 1] != c)
367	goto connect_idle;
368	return i;
369
370	/*
371	* According to PnP spec, we should set DTR = 1 and RTS = 0 while
372	* in idle state. But, `moused' shall set DTR = RTS = 1 and proceed,
373	* assuming there is something at the port even if it didn't
374	* respond to the PnP enumeration procedure.
375	*/
376	disconnect_idle:
377	i = XF86_M_DTR \| XF86_M_RTS; /* DTR = 1, RTS = 1 */
378	xf86SerialModemSetBits(pInfo->fd, i);
379	connect_idle:
380	return 0;
381	}
382
383	static int
384	pnpparse(InputInfoPtr pInfo, pnpid_t id, char buf, int len)
385	{
386	char s[3];
387	int offset;
388	int sum = 0;
389	int i, j;
390
391	id->revision = 0;
392	id->eisaid = NULL;
393	id->serial = NULL;
394	id->class = NULL;
395	id->compat = NULL;
396	id->description = NULL;
397	id->neisaid = 0;
398	id->nserial = 0;
399	id->nclass = 0;
400	id->ncompat = 0;
401	id->ndescription = 0;
402
403	offset = 0x28 - buf[0];
404
405	/* calculate checksum */
406	for (i = 0; i < len - 3; ++i) {
407	sum += buf[i];
408	buf[i] += offset;
409	}
410	sum += buf[len - 1];
411	for (; i < len; ++i)
412	buf[i] += offset;
413	xf86MsgVerb(X_INFO, 2, "%s: PnP ID string: `%.s'\n", pInfo->name,
414	len, len, buf);
415
416	/* revision */
417	buf[1] -= offset;
418	buf[2] -= offset;
419	id->revision = ((buf[1] & 0x3f) << 6) \| (buf[2] & 0x3f);
420	xf86MsgVerb(X_INFO, 2, "%s: PnP rev %d.%02d\n", pInfo->name,
421	id->revision / 100, id->revision % 100);
422
423	/* EISA vender and product ID */
424	id->eisaid = &buf[3];
425	id->neisaid = 7;
426
427	/* option strings */
428	i = 10;
429	if (buf[i] == '\\') {
430	/* device serial # */
431	for (j = ++i; i < len; ++i) {
432	if (buf[i] == '\\')
433	break;
434	}
435	if (i >= len)
436	i -= 3;
437	if (i - j == 8) {
438	id->serial = &buf[j];
439	id->nserial = 8;
440	}
441	}
442	if (buf[i] == '\\') {
443	/* PnP class */
444	for (j = ++i; i < len; ++i) {
445	if (buf[i] == '\\')
446	break;
447	}
448	if (i >= len)
449	i -= 3;
450	if (i > j + 1) {
451	id->class = &buf[j];
452	id->nclass = i - j;
453	}
454	}
455	if (buf[i] == '\\') {
456	/* compatible driver */
457	for (j = ++i; i < len; ++i) {
458	if (buf[i] == '\\')
459	break;
460	}
461	/*
462	* PnP COM spec prior to v0.96 allowed '*' in this field,
463	* it's not allowed now; just ignore it.
464	*/
465	if (buf[j] == '*')
466	++j;
467	if (i >= len)
468	i -= 3;
469	if (i > j + 1) {
470	id->compat = &buf[j];
471	id->ncompat = i - j;
472	}
473	}
474	if (buf[i] == '\\') {
475	/* product description */
476	for (j = ++i; i < len; ++i) {
477	if (buf[i] == ';')
478	break;
479	}
480	if (i >= len)
481	i -= 3;
482	if (i > j + 1) {
483	id->description = &buf[j];
484	id->ndescription = i - j;
485	}
486	}
487
488	/* checksum exists if there are any optional fields */
489	if ((id->nserial > 0) \|\| (id->nclass > 0)
490	\|\| (id->ncompat > 0) \|\| (id->ndescription > 0)) {
491	xf86MsgVerb(X_INFO, 4, "%s: PnP checksum: 0x%02X\n", pInfo->name, sum);
492	sprintf(s, "%02X", sum & 0x0ff);
493	if (strncmp(s, &buf[len - 3], 2) != 0) {
494	#if 0
495	/*
496	* Checksum error!!
497	* I found some mice do not comply with the PnP COM device
498	* spec regarding checksum... XXX
499	*/
500	return FALSE;
501	#endif
502	}
503	}
504
505	return TRUE;
506	}
507
508	/* We can only identify MS at the moment */
509	static MouseProtocolID
510	prepnpparse(InputInfoPtr pInfo, char *buf)
511	{
512	if (buf[0] == 'M' && buf[1] == '3')
513	return PROT_MS;
514	return PROT_UNKNOWN;
515	}
516
517
518	static symtab_t *
519	pnpproto(pnpid_t *id)
520	{
521	symtab_t *t;
522	int i, j;
523
524	if (id->nclass > 0)
525	if (strncmp(id->class, "MOUSE", id->nclass) != 0)
526	/* this is not a mouse! */
527	return NULL;
528
529	if (id->neisaid > 0) {
530	t = gettoken(pnpprod, id->eisaid, id->neisaid);
531	if (t->val != -1)
532	return t;
533	}
534
535	/*
536	* The 'Compatible drivers' field may contain more than one
537	* ID separated by ','.
538	*/
539	if (id->ncompat <= 0)
540	return NULL;
541	for (i = 0; i < id->ncompat; ++i) {
542	for (j = i; id->compat[i] != ','; ++i)
543	if (i >= id->ncompat)
544	break;
545	if (i > j) {
546	t = gettoken(pnpprod, id->compat + j, i - j);
547	if (t->val != -1)
548	return t;
549	}
550	}
551
552	return NULL;
553	}
554
555	/* name/val mapping */
556
557	static symtab_t *
558	gettoken(tab, s, len)
559	symtab_t *tab;
560	char *s;
561	int len;
562	{
563	int i;
564
565	for (i = 0; tab[i].name != NULL; ++i) {
566	if (strncmp(tab[i].name, s, len) == 0)
567	break;
568	}
569	return &tab[i];
570	}
571
572	/***************** PS/2 PnP probing **************/
573
574	static int
575	readMouse(InputInfoPtr pInfo, unsigned char *u)
576	{
577
578	if (xf86WaitForInput(pInfo->fd, 200000) <= 0)
579	return FALSE;
580
581	xf86ReadSerial(pInfo->fd, u, 1);
582	return TRUE;
583	}
584
585	static void
586	ps2DisableWrapMode(InputInfoPtr pInfo)
587	{
588	unsigned char reset_wrap_mode[] = { 0xEC };
589	ps2SendPacket(pInfo, reset_wrap_mode, sizeof(reset_wrap_mode));
590	}
591
592	Bool
593	ps2SendPacket(InputInfoPtr pInfo, unsigned char *bytes, int len)
594	{
595	unsigned char c;
596	int i,j;
597
598	#ifdef MOUSE_DEBUG
599	xf86ErrorF("Ps/2 data package:");
600	for (i = 0; i < len; i++)
601	xf86ErrorF(" %x", *(bytes + i));
602	xf86ErrorF("\n");
603	#endif
604
605	for (i = 0; i < len; i++) {
606	for (j = 0; j < 10; j++) {
607	xf86WriteSerial(pInfo->fd, bytes + i, 1);
608	usleep(10000);
609	if (!readMouse(pInfo,&c)) {
610	#ifdef MOUSE_DEBUG
611	xf86ErrorF("sending 0x%x to PS/2 unsuccessful\n",*(bytes + i));
612	#endif
613	return FALSE;
614	}
615	#ifdef MOUSE_DEBUG
616	xf86ErrorF("Recieved: 0x%x\n",c);
617	#endif
618	if (c == 0xFA) /* ACK */
619	break;
620
621	if (c == 0xFE) /* resend */
622	continue;
623
624
625	if (c == 0xFC) /* error */
626	return FALSE;
627
628	/* Some mice accidently enter wrap mode during init */
629	if (c == (bytes + i) / wrap mode */
630	&& ((bytes + i) != 0xEC)) / avoid recursion */
631	ps2DisableWrapMode(pInfo);
632
633	return FALSE;
634	}
635	if (j == 10)
636	return FALSE;
637	}
638
639	return TRUE;
640	}
641
642	static Bool
643	ps2DisableDataReporting(InputInfoPtr pInfo)
644	{
645	unsigned char packet[] = { 0xF5 };
646	return ps2SendPacket(pInfo, packet, sizeof(packet));
647	}
648
649	Bool
650	ps2EnableDataReporting(InputInfoPtr pInfo)
651	{
652	unsigned char packet[] = { 0xF4 };
653	return ps2SendPacket(pInfo, packet, sizeof(packet));
654	}
655
656	int
657	ps2GetDeviceID(InputInfoPtr pInfo)
658	{
659	unsigned char u;
660	unsigned char packet[] = { 0xf2 };
661
662	usleep(30000);
663	xf86FlushInput(pInfo->fd);
664	if (!ps2SendPacket(pInfo, packet, sizeof(packet)))
665	return -1;
666	while (1) {
667	if (!readMouse(pInfo,&u))
668	return -1;
669	if (u != 0xFA)
670	break;
671	}
672	#ifdef MOUSE_DEBUG
673	xf86ErrorF("Obtained Mouse Type: %x\n",u);
674	#endif
675	return (int) u;
676	}
677
678	Bool
679	ps2Reset(InputInfoPtr pInfo)
680	{
681	unsigned char u;
682	unsigned char packet[] = { 0xff };
683	unsigned char reply[] = { 0xaa, 0x00 };
684	unsigned int i;
685	#ifdef MOUSE_DEBUG
686	xf86ErrorF("PS/2 Mouse reset\n");
687	#endif
688	if (!ps2SendPacket(pInfo, packet, sizeof(packet)))
689	return FALSE;
690	/* we need a little delay here */
691	xf86WaitForInput(pInfo->fd, 500000);
692	for (i = 0; i < sizeof(reply) ; i++) {
693	if (!readMouse(pInfo,&u)) {
694	goto EXIT;
695	}
696	if (u != reply[i])
697	goto EXIT;
698	}
699	return TRUE;
700
701	EXIT:
702	xf86FlushInput(pInfo->fd);
703	return FALSE;
704	}
705
706	static MouseProtocolID
707	probePs2ProtocolPnP(InputInfoPtr pInfo)
708	{
709	unsigned char u;
710	MouseProtocolID ret = PROT_UNKNOWN;
711
712	xf86FlushInput(pInfo->fd);
713
714	ps2DisableDataReporting(pInfo);
715
716	if (ps2Reset(pInfo)) { /* Reset PS2 device */
717	unsigned char seq[] = { 243, 200, 243, 100, 243, 80 };
718	/* Try to identify Intelli Mouse */
719	if (ps2SendPacket(pInfo, seq, sizeof(seq))) {
720	u = ps2GetDeviceID(pInfo);
721	if (u == 0x03) {
722	/* found IntelliMouse now try IntelliExplorer */
723	unsigned char seq[] = { 243, 200, 243, 200, 243, 80 };
724	if (ps2SendPacket(pInfo,seq,sizeof(seq))) {
725	u = ps2GetDeviceID(pInfo);
726	if (u == 0x04)
727	ret = PROT_EXPPS2;
728	else
729	ret = PROT_IMPS2;
730	}
731	} else if (ps2Reset(pInfo)) /* reset again to find sane state */
732	ret = PROT_PS2;
733	}
734
735	if (ret != PROT_UNKNOWN)
736	ps2EnableDataReporting(pInfo);
737	}
738	return ret;
739	}
740
741	static struct ps2protos {
742	int Id;
743	MouseProtocolID protoID;
744	} ps2 [] = {
745	{ 0x0, PROT_PS2 },
746	{ 0x3, PROT_IMPS2 },
747	{ 0x4, PROT_EXPPS2 },
748	{ -1 , PROT_UNKNOWN }
749	};
750
751
752	static MouseProtocolID
753	getPs2ProtocolPnP(InputInfoPtr pInfo)
754	{
755	int Id;
756	int i;
757	MouseProtocolID proto;
758	int count = 4;
759
760	xf86FlushInput(pInfo->fd);
761
762	while (--count)
763	if (ps2DisableDataReporting(pInfo))
764	break;
765
766	if (!count) {
767	proto = PROT_UNKNOWN;
768	goto EXIT;
769	}
770
771	if ((Id = ps2GetDeviceID(pInfo)) == -1) {
772	proto = PROT_UNKNOWN;
773	goto EXIT;
774	}
775
776	if (-1 == ps2EnableDataReporting(pInfo)) {
777	proto = PROT_UNKNOWN;
778	goto EXIT;
779	}
780
781	for (i = 0; ps2[i].protoID != PROT_UNKNOWN; i++) {
782	if (ps2[i].Id == Id) {
783	xf86MsgVerb(X_PROBED,2,"Found PS/2 proto ID %x\n",Id);
784	proto = ps2[i].protoID;
785	goto EXIT;
786	}
787	}
788
789	proto = PROT_UNKNOWN;
790	xf86Msg(X_ERROR,"Found unknown PS/2 proto ID %x\n",Id);
791
792	EXIT:
793	xf86FlushInput(pInfo->fd);
794	return proto;
795	}
796

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source: vbox/trunk/src/VBox/Additions/x11/xmouse/xorg14/pnp.c@ 16774

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