pnp.c@ 16995

Last change on this file since 16995 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: 19.8 KB

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

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source: vbox/trunk/src/VBox/Additions/x11/vboxmouse/xorg70/pnp.c@ 16995

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