1/*
2 * Copyright 1992 by the University of Guelph
3 *
4 * Permission to use, copy and modify this
5 * software and its documentation for any purpose and without
6 * fee is hereby granted, provided that the above copyright
7 * notice appear in all copies and that both that copyright
8 * notice and this permission notice appear in supporting
9 * documentation.
10 * University of Guelph makes no representations about the suitability of
11 * this software for any purpose. It is provided "as is"
12 * without express or implied warranty.
13 */
14/*
15 * Driver for the Logitech and ATI Inport Bus mice for use with 386bsd and
16 * the X386 port, courtesy of
17 * Rick Macklem, rick@snowhite.cis.uoguelph.ca
18 * Caveats: The driver currently uses spltty(), but doesn't use any
19 * generic tty code. It could use splmse() (that only masks off the
20 * bus mouse interrupt, but that would require hacking in i386/isa/icu.s.
21 * (This may be worth the effort, since the Logitech generates 30/60
22 * interrupts/sec continuously while it is open.)
23 * NB: The ATI has NOT been tested yet!
24 */
25
26/*
27 * Modification history:
28 *
29 * Oct 19, 1992 -- E. Stark (stark@cs.sunysb.edu)
30 * fixes to make it work with Microsoft InPort busmouse
31 *
32 * Jan, 1993 -- E. Stark (stark@cs.sunysb.edu)
33 * added patches for new "select" interface
34 *
35 * May 4, 1993 -- E. Stark (stark@cs.sunysb.edu)
36 * changed position of some spl()'s in mseread
37 *
38 * October 8, 1993 -- E. Stark (stark@cs.sunysb.edu)
39 * limit maximum negative x/y value to -127 to work around XFree problem
40 * that causes spurious button pushes.
41 */
42
43#include "mse.h"
44#if NMSE > 0
45#include "param.h"
46#include "proc.h"
47#include "user.h"
48#include "buf.h"
49#include "systm.h"
50#include "kernel.h"
51#include "ioctl.h"
52#include "tty.h"
53#include "uio.h"
54
55#include "i386/isa/isa_device.h"
56#include "i386/isa/icu.h"
57
|
58int mseprobe(), mseattach(), mseintr();
|
58static int mseprobe(struct isa_device *);
59static int mseattach(struct isa_device *);
60void mseintr(int); |
61
62struct isa_driver msedriver = {
63 mseprobe, mseattach, "mse"
64};
65
66/*
67 * Software control structure for mouse. The sc_enablemouse(),
68 * sc_disablemouse() and sc_getmouse() routines must be called spl'd().
69 */
70#define PROTOBYTES 5
71struct mse_softc {
72 int sc_flags;
73 int sc_mousetype;
74 pid_t sc_selp;
75 u_int sc_port;
76 void (*sc_enablemouse)();
77 void (*sc_disablemouse)();
78 void (*sc_getmouse)();
79 int sc_deltax;
80 int sc_deltay;
81 int sc_obuttons;
82 int sc_buttons;
83 int sc_bytesread;
84 u_char sc_bytes[PROTOBYTES];
85} mse_sc[NMSE];
86
87/* Flags */
88#define MSESC_OPEN 0x1
89#define MSESC_WANT 0x2
90
91/* and Mouse Types */
92#define MSE_LOGITECH 0x1
93#define MSE_ATIINPORT 0x2
94
95#define MSE_PORTA 0
96#define MSE_PORTB 1
97#define MSE_PORTC 2
98#define MSE_PORTD 3
99
100#define MSE_UNIT(dev) (minor(dev) >> 1)
101#define MSE_NBLOCKIO(dev) (minor(dev) & 0x1)
102
103/*
104 * Logitech bus mouse definitions
105 */
106#define MSE_SETUP 0x91 /* What does this mean? */
107#define MSE_HOLD 0x80
108#define MSE_RXLOW 0x00
109#define MSE_RXHIGH 0x20
110#define MSE_RYLOW 0x40
111#define MSE_RYHIGH 0x60
112#define MSE_DISINTR 0x10
113#define MSE_INTREN 0x00
114
115static int mse_probelogi();
116static void mse_enablelogi(), mse_disablelogi(), mse_getlogi();
117
118/*
119 * ATI Inport mouse definitions
120 */
121#define MSE_INPORT_RESET 0x80
122#define MSE_INPORT_STATUS 0x00
123#define MSE_INPORT_DX 0x01
124#define MSE_INPORT_DY 0x02
125#define MSE_INPORT_MODE 0x07
126#define MSE_INPORT_HOLD 0x20
127#define MSE_INPORT_INTREN 0x09
128
129static int mse_probeati();
130static void mse_enableati(), mse_disableati(), mse_getati();
131
132#define MSEPRI (PZERO + 3)
133
134/*
135 * Table of mouse types.
136 * Keep the Logitech last, since I haven't figured out how to probe it
137 * properly yet. (Someday I'll have the documentation.)
138 */
139struct mse_types {
140 int m_type; /* Type of bus mouse */
141 int (*m_probe)(); /* Probe routine to test for it */
142 void (*m_enable)(); /* Start routine */
143 void (*m_disable)(); /* Disable interrupts routine */
144 void (*m_get)(); /* and get mouse status */
145} mse_types[] = {
146 { MSE_ATIINPORT, mse_probeati, mse_enableati, mse_disableati, mse_getati },
147 { MSE_LOGITECH, mse_probelogi, mse_enablelogi, mse_disablelogi, mse_getlogi },
148 { 0, },
149};
150
|
| 151int |
152mseprobe(idp)
153 register struct isa_device *idp;
154{
155 register struct mse_softc *sc = &mse_sc[idp->id_unit];
156 register int i;
157
158 /*
159 * Check for each mouse type in the table.
160 */
161 i = 0;
162 while (mse_types[i].m_type) {
163 if ((*mse_types[i].m_probe)(idp)) {
164 sc->sc_mousetype = mse_types[i].m_type;
165 sc->sc_enablemouse = mse_types[i].m_enable;
166 sc->sc_disablemouse = mse_types[i].m_disable;
167 sc->sc_getmouse = mse_types[i].m_get;
168 return (1);
169 }
170 i++;
171 }
172 return (0);
173}
174
|
| 175int |
176mseattach(idp)
177 struct isa_device *idp;
178{
179 struct mse_softc *sc = &mse_sc[idp->id_unit];
180
181 sc->sc_port = idp->id_iobase;
182 return (1);
183}
184
185/*
186 * Exclusive open the mouse, initialize it and enable interrupts.
187 */
|
| 188int |
189mseopen(dev, flag)
190 dev_t dev;
191 int flag;
192{
193 register struct mse_softc *sc;
194 int s;
195
196 if (MSE_UNIT(dev) >= NMSE)
197 return (ENXIO);
198 sc = &mse_sc[MSE_UNIT(dev)];
199 if (sc->sc_flags & MSESC_OPEN)
200 return (EBUSY);
201 sc->sc_flags |= MSESC_OPEN;
202 sc->sc_obuttons = sc->sc_buttons = 0x7;
203 sc->sc_deltax = sc->sc_deltay = 0;
204 sc->sc_bytesread = PROTOBYTES;
205
206 /*
207 * Initialize mouse interface and enable interrupts.
208 */
209 s = spltty();
210 (*sc->sc_enablemouse)(sc->sc_port);
211 splx(s);
212 return (0);
213}
214
215/*
216 * mseclose: just turn off mouse innterrupts.
217 */
|
| 218int |
219mseclose(dev, flag)
|
| 220 dev_t dev; |
221 int flag;
222{
223 struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)];
224 int s;
225
226 s = spltty();
227 (*sc->sc_disablemouse)(sc->sc_port);
228 sc->sc_flags &= ~MSESC_OPEN;
229 splx(s);
230 return(0);
231}
232
233/*
234 * mseread: return mouse info using the MSC serial protocol, but without
235 * using bytes 4 and 5.
236 * (Yes this is cheesy, but it makes the X386 server happy, so...)
237 */
|
| 238int |
239mseread(dev, uio)
240 dev_t dev;
241 struct uio *uio;
242{
243 register struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)];
244 int xfer, s, error;
245
246 /*
247 * If there are no protocol bytes to be read, set up a new protocol
248 * packet.
249 */
250 s = spltty(); /* XXX Should be its own spl, but where is imlXX() */
251 if (sc->sc_bytesread >= PROTOBYTES) {
252 while (sc->sc_deltax == 0 && sc->sc_deltay == 0 &&
253 (sc->sc_obuttons ^ sc->sc_buttons) == 0) {
254 if (MSE_NBLOCKIO(dev)) {
255 splx(s);
256 return (0);
257 }
258 sc->sc_flags |= MSESC_WANT;
259 if (error = tsleep((caddr_t)sc, MSEPRI | PCATCH,
260 "mseread", 0)) {
261 splx(s);
262 return (error);
263 }
264 }
265
266 /*
267 * Generate protocol bytes.
268 * For some reason X386 expects 5 bytes but never uses
269 * the fourth or fifth?
270 */
271 sc->sc_bytes[0] = 0x80 | (sc->sc_buttons & ~0xf8);
272 if (sc->sc_deltax > 127)
273 sc->sc_deltax = 127;
274 if (sc->sc_deltax < -127)
275 sc->sc_deltax = -127;
276 sc->sc_deltay = -sc->sc_deltay; /* Otherwise mousey goes wrong way */
277 if (sc->sc_deltay > 127)
278 sc->sc_deltay = 127;
279 if (sc->sc_deltay < -127)
280 sc->sc_deltay = -127;
281 sc->sc_bytes[1] = sc->sc_deltax;
282 sc->sc_bytes[2] = sc->sc_deltay;
283 sc->sc_bytes[3] = sc->sc_bytes[4] = 0;
284 sc->sc_obuttons = sc->sc_buttons;
285 sc->sc_deltax = sc->sc_deltay = 0;
286 sc->sc_bytesread = 0;
287 }
288 splx(s);
289 xfer = MIN(uio->uio_resid, PROTOBYTES - sc->sc_bytesread);
290 if (error = uiomove(&sc->sc_bytes[sc->sc_bytesread], xfer, uio))
291 return (error);
292 sc->sc_bytesread += xfer;
293 return(0);
294}
295
296/*
297 * mseselect: check for mouse input to be processed.
298 */
|
| 299int |
300mseselect(dev, rw, p)
301 dev_t dev;
302 int rw;
303 struct proc *p;
304{
305 register struct mse_softc *sc = &mse_sc[MSE_UNIT(dev)];
306 int s;
307
308 s = spltty();
309 if (sc->sc_bytesread != PROTOBYTES || sc->sc_deltax != 0 ||
310 sc->sc_deltay != 0 || (sc->sc_obuttons ^ sc->sc_buttons) != 0) {
311 splx(s);
312 return (1);
313 }
314
315 /*
316 * Since this is an exclusive open device, any previous proc.
317 * pointer is trash now, so we can just assign it.
318 */
319 sc->sc_selp = p->p_pid;
320 splx(s);
321 return (0);
322}
323
324/*
325 * mseintr: update mouse status. sc_deltax and sc_deltay are accumulative.
326 */
|
| 327void |
328mseintr(unit)
329 int unit;
330{
331 register struct mse_softc *sc = &mse_sc[unit];
332 pid_t p;
333
334#ifdef DEBUG
335 static int mse_intrcnt = 0;
336 if((mse_intrcnt++ % 10000) == 0)
337 printf("mseintr\n");
338#endif /* DEBUG */
339 if ((sc->sc_flags & MSESC_OPEN) == 0)
340 return;
341
342 (*sc->sc_getmouse)(sc->sc_port, &sc->sc_deltax, &sc->sc_deltay, &sc->sc_buttons);
343
344 /*
345 * If mouse state has changed, wake up anyone wanting to know.
346 */
347 if (sc->sc_deltax != 0 || sc->sc_deltay != 0 ||
348 (sc->sc_obuttons ^ sc->sc_buttons) != 0) {
349 if (sc->sc_flags & MSESC_WANT) {
350 sc->sc_flags &= ~MSESC_WANT;
351 wakeup((caddr_t)sc);
352 }
353 if (sc->sc_selp) {
354 p = sc->sc_selp;
355 sc->sc_selp = (pid_t)0;
356 selwakeup(p, 0);
357 }
358 }
359}
360
361/*
362 * Routines for the Logitech mouse.
363 */
364/*
365 * Test for a Logitech bus mouse and return 1 if it is.
366 * (until I know how to use the signature port properly, just disable
367 * interrupts and return 1)
368 */
369static int
370mse_probelogi(idp)
371 register struct isa_device *idp;
372{
373
374 outb(idp->id_iobase + MSE_PORTB, 0x55);
375 if (inb(idp->id_iobase + MSE_PORTB) == 0x55) {
376 outb(idp->id_iobase + MSE_PORTB, 0xaa);
377 if (inb(idp->id_iobase + MSE_PORTB) == 0xaa)
378 return (1);
379 }
380 return (0);
381}
382
383/*
384 * Initialize Logitech mouse and enable interrupts.
385 */
386static void
387mse_enablelogi(port)
388 register u_int port;
389{
390 int dx, dy, but;
391
392 outb(port + MSE_PORTD, MSE_SETUP);
393 mse_getlogi(port, &dx, &dy, &but);
394}
395
396/*
397 * Disable interrupts for Logitech mouse.
398 */
399static void
400mse_disablelogi(port)
401 register u_int port;
402{
403
404 outb(port + MSE_PORTC, MSE_DISINTR);
405}
406
407/*
408 * Get the current dx, dy and button up/down state.
409 */
410static void
411mse_getlogi(port, dx, dy, but)
412 register u_int port;
413 int *dx;
414 int *dy;
415 int *but;
416{
417 register char x, y;
418
419 outb(port + MSE_PORTC, MSE_HOLD | MSE_RXLOW);
420 x = inb(port + MSE_PORTA);
421 *but = (x >> 5) & 0x7;
422 x &= 0xf;
423 outb(port + MSE_PORTC, MSE_HOLD | MSE_RXHIGH);
424 x |= (inb(port + MSE_PORTA) << 4);
425 outb(port + MSE_PORTC, MSE_HOLD | MSE_RYLOW);
426 y = (inb(port + MSE_PORTA) & 0xf);
427 outb(port + MSE_PORTC, MSE_HOLD | MSE_RYHIGH);
428 y |= (inb(port + MSE_PORTA) << 4);
429 *dx += x;
430 *dy += y;
431 outb(port + MSE_PORTC, MSE_INTREN);
432}
433
434/*
435 * Routines for the ATI Inport bus mouse.
436 */
437/*
438 * Test for a ATI Inport bus mouse and return 1 if it is.
439 * (do not enable interrupts)
440 */
441static int
442mse_probeati(idp)
443 register struct isa_device *idp;
444{
445 int i;
446
447 for (i = 0; i < 2; i++)
448 if (inb(idp->id_iobase + MSE_PORTC) == 0xde)
449 return (1);
450 return (0);
451}
452
453/*
454 * Initialize ATI Inport mouse and enable interrupts.
455 */
456static void
457mse_enableati(port)
458 register u_int port;
459{
460
461 outb(port + MSE_PORTA, MSE_INPORT_RESET);
462 outb(port + MSE_PORTA, MSE_INPORT_MODE);
463 outb(port + MSE_PORTB, MSE_INPORT_INTREN);
464}
465
466/*
467 * Disable interrupts for ATI Inport mouse.
468 */
469static void
470mse_disableati(port)
471 register u_int port;
472{
473
474 outb(port + MSE_PORTA, MSE_INPORT_MODE);
475 outb(port + MSE_PORTB, 0);
476}
477
478/*
479 * Get current dx, dy and up/down button state.
480 */
481static void
482mse_getati(port, dx, dy, but)
483 register u_int port;
484 int *dx;
485 int *dy;
486 int *but;
487{
488 register char byte;
489
490 outb(port + MSE_PORTA, MSE_INPORT_MODE);
491 outb(port + MSE_PORTB, MSE_INPORT_HOLD);
492 outb(port + MSE_PORTA, MSE_INPORT_STATUS);
493 *but = ~(inb(port + MSE_PORTB) & 0x7);
494 outb(port + MSE_PORTA, MSE_INPORT_DX);
495 byte = inb(port + MSE_PORTB);
496 *dx += byte;
497 outb(port + MSE_PORTA, MSE_INPORT_DY);
498 byte = inb(port + MSE_PORTB);
499 *dy += byte;
500 outb(port + MSE_PORTA, MSE_INPORT_MODE);
501 outb(port + MSE_PORTB, MSE_INPORT_INTREN);
502}
503#endif /* NMSE */
|