xref: /netbsd-src/sys/dev/wscons/wsdisplay_compat_usl.c (revision de1dfb1250df962f1ff3a011772cf58e605aed11) 
1 /* $NetBSD: wsdisplay_compat_usl.c,v 1.25 2004/04/23 21:29:16 itojun Exp $ */
2 
3 /*
4  * Copyright (c) 1998
5  *	Matthias Drochner.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  *
27  */
28 
29 #include <sys/cdefs.h>
30 __KERNEL_RCSID(0, "$NetBSD: wsdisplay_compat_usl.c,v 1.25 2004/04/23 21:29:16 itojun Exp $");
31 
32 #include "opt_compat_freebsd.h"
33 #include "opt_compat_netbsd.h"
34 
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/callout.h>
38 #include <sys/ioctl.h>
39 #include <sys/kernel.h>
40 #include <sys/proc.h>
41 #include <sys/signalvar.h>
42 #include <sys/malloc.h>
43 #include <sys/errno.h>
44 
45 #include <dev/wscons/wsconsio.h>
46 #include <dev/wscons/wsdisplayvar.h>
47 #include <dev/wscons/wscons_callbacks.h>
48 #include <dev/wscons/wsdisplay_usl_io.h>
49 
50 #include "opt_wsdisplay_compat.h"
51 
52 struct usl_syncdata {
53 	struct wsscreen *s_scr;
54 	struct proc *s_proc;
55 	pid_t s_pid;
56 	int s_flags;
57 #define SF_DETACHPENDING 1
58 #define SF_ATTACHPENDING 2
59 	int s_acqsig, s_relsig;
60 	int s_frsig; /* unused */
61 	void (*s_callback)(void *, int, int);
62 	void *s_cbarg;
63 	struct callout s_attach_ch;
64 	struct callout s_detach_ch;
65 };
66 
67 static int usl_sync_init(struct wsscreen *, struct usl_syncdata **,
68 			      struct proc *, int, int, int);
69 static void usl_sync_done(struct usl_syncdata *);
70 static int usl_sync_check(struct usl_syncdata *);
71 static struct usl_syncdata *usl_sync_get(struct wsscreen *);
72 
73 static int usl_detachproc(void *, int, void (*)(void *, int, int), void *);
74 static int usl_detachack(struct usl_syncdata *, int);
75 static void usl_detachtimeout(void *);
76 static int usl_attachproc(void *, int, void (*)(void *, int, int), void *);
77 static int usl_attachack(struct usl_syncdata *, int);
78 static void usl_attachtimeout(void *);
79 
80 static const struct wscons_syncops usl_syncops = {
81 	usl_detachproc,
82 	usl_attachproc,
83 #define _usl_sync_check ((int (*)(void *))usl_sync_check)
84 	_usl_sync_check,
85 #define _usl_sync_destroy ((void (*)(void *))usl_sync_done)
86 	_usl_sync_destroy
87 };
88 
89 #ifndef WSCOMPAT_USL_SYNCTIMEOUT
90 #define WSCOMPAT_USL_SYNCTIMEOUT 5 /* seconds */
91 #endif
92 static int wscompat_usl_synctimeout = WSCOMPAT_USL_SYNCTIMEOUT;
93 
94 static int
95 usl_sync_init(struct wsscreen *scr, struct usl_syncdata **sdp,
96 	struct proc *p, int acqsig, int relsig, int frsig)
97 {
98 	struct usl_syncdata *sd;
99 	int res;
100 
101 	sd = malloc(sizeof(struct usl_syncdata), M_DEVBUF, M_WAITOK);
102 	if (!sd)
103 		return (ENOMEM);
104 	sd->s_scr = scr;
105 	sd->s_proc = p;
106 	sd->s_pid = p->p_pid;
107 	sd->s_flags = 0;
108 	sd->s_acqsig = acqsig;
109 	sd->s_relsig = relsig;
110 	sd->s_frsig = frsig;
111 	callout_init(&sd->s_attach_ch);
112 	callout_init(&sd->s_detach_ch);
113 	res = wsscreen_attach_sync(scr, &usl_syncops, sd);
114 	if (res) {
115 		free(sd, M_DEVBUF);
116 		return (res);
117 	}
118 	*sdp = sd;
119 	return (0);
120 }
121 
122 static void
123 usl_sync_done(struct usl_syncdata *sd)
124 {
125 	if (sd->s_flags & SF_DETACHPENDING) {
126 		callout_stop(&sd->s_detach_ch);
127 		(*sd->s_callback)(sd->s_cbarg, 0, 0);
128 	}
129 	if (sd->s_flags & SF_ATTACHPENDING) {
130 		callout_stop(&sd->s_attach_ch);
131 		(*sd->s_callback)(sd->s_cbarg, ENXIO, 0);
132 	}
133 	wsscreen_detach_sync(sd->s_scr);
134 	free(sd, M_DEVBUF);
135 }
136 
137 static int
138 usl_sync_check(struct usl_syncdata *sd)
139 {
140 	if (sd->s_proc == pfind(sd->s_pid))
141 		return (1);
142 	printf("usl_sync_check: process %d died\n", sd->s_pid);
143 	usl_sync_done(sd);
144 	return (0);
145 }
146 
147 static struct usl_syncdata *
148 usl_sync_get(struct wsscreen *scr)
149 {
150 	void *sd;
151 
152 	if (wsscreen_lookup_sync(scr, &usl_syncops, &sd))
153 		return (0);
154 	return (struct usl_syncdata *)sd;
155 }
156 
157 static int
158 usl_detachproc(void *cookie, int waitok, void (*callback)(void *, int, int),
159 	       void *cbarg)
160 {
161 	struct usl_syncdata *sd = cookie;
162 
163 	if (!usl_sync_check(sd))
164 		return (0);
165 
166 	/* we really need a callback */
167 	if (!callback)
168 		return (EINVAL);
169 
170 	/*
171 	 * Normally, this is called from the controlling process.
172 	 * Is is supposed to reply with a VT_RELDISP ioctl(), so
173 	 * it is not useful to tsleep() here.
174 	 */
175 	sd->s_callback = callback;
176 	sd->s_cbarg = cbarg;
177 	sd->s_flags |= SF_DETACHPENDING;
178 	psignal(sd->s_proc, sd->s_relsig);
179 	callout_reset(&sd->s_detach_ch, wscompat_usl_synctimeout * hz,
180 	    usl_detachtimeout, sd);
181 
182 	return (EAGAIN);
183 }
184 
185 static int
186 usl_detachack(struct usl_syncdata *sd, int ack)
187 {
188 	if (!(sd->s_flags & SF_DETACHPENDING)) {
189 		printf("usl_detachack: not detaching\n");
190 		return (EINVAL);
191 	}
192 
193 	callout_stop(&sd->s_detach_ch);
194 	sd->s_flags &= ~SF_DETACHPENDING;
195 
196 	if (sd->s_callback)
197 		(*sd->s_callback)(sd->s_cbarg, (ack ? 0 : EIO), 1);
198 
199 	return (0);
200 }
201 
202 static void
203 usl_detachtimeout(void *arg)
204 {
205 	struct usl_syncdata *sd = arg;
206 
207 	printf("usl_detachtimeout\n");
208 
209 	if (!(sd->s_flags & SF_DETACHPENDING)) {
210 		printf("usl_detachtimeout: not detaching\n");
211 		return;
212 	}
213 
214 	sd->s_flags &= ~SF_DETACHPENDING;
215 
216 	if (sd->s_callback)
217 		(*sd->s_callback)(sd->s_cbarg, EIO, 0);
218 
219 	(void) usl_sync_check(sd);
220 }
221 
222 static int
223 usl_attachproc(void *cookie, int waitok, void (*callback)(void *, int, int),
224 	       void *cbarg)
225 {
226 	struct usl_syncdata *sd = cookie;
227 
228 	if (!usl_sync_check(sd))
229 		return (0);
230 
231 	/* we really need a callback */
232 	if (!callback)
233 		return (EINVAL);
234 
235 	sd->s_callback = callback;
236 	sd->s_cbarg = cbarg;
237 	sd->s_flags |= SF_ATTACHPENDING;
238 	psignal(sd->s_proc, sd->s_acqsig);
239 	callout_reset(&sd->s_attach_ch, wscompat_usl_synctimeout * hz,
240 	    usl_attachtimeout, sd);
241 
242 	return (EAGAIN);
243 }
244 
245 static int
246 usl_attachack(struct usl_syncdata *sd, int ack)
247 {
248 	if (!(sd->s_flags & SF_ATTACHPENDING)) {
249 		printf("usl_attachack: not attaching\n");
250 		return (EINVAL);
251 	}
252 
253 	callout_stop(&sd->s_attach_ch);
254 	sd->s_flags &= ~SF_ATTACHPENDING;
255 
256 	if (sd->s_callback)
257 		(*sd->s_callback)(sd->s_cbarg, (ack ? 0 : EIO), 1);
258 
259 	return (0);
260 }
261 
262 static void
263 usl_attachtimeout(void *arg)
264 {
265 	struct usl_syncdata *sd = arg;
266 
267 	printf("usl_attachtimeout\n");
268 
269 	if (!(sd->s_flags & SF_ATTACHPENDING)) {
270 		printf("usl_attachtimeout: not attaching\n");
271 		return;
272 	}
273 
274 	sd->s_flags &= ~SF_ATTACHPENDING;
275 
276 	if (sd->s_callback)
277 		(*sd->s_callback)(sd->s_cbarg, EIO, 0);
278 
279 	(void) usl_sync_check(sd);
280 }
281 
282 int
283 wsdisplay_usl_ioctl1(struct wsdisplay_softc *sc, u_long cmd, caddr_t data,
284 		     int flag, struct proc *p)
285 {
286 	int idx, maxidx;
287 
288 	switch (cmd) {
289 	    case VT_OPENQRY:
290 		maxidx = wsdisplay_maxscreenidx(sc);
291 		for (idx = 0; idx <= maxidx; idx++) {
292 			if (wsdisplay_screenstate(sc, idx) == 0) {
293 				*(int *)data = idx + 1;
294 				return (0);
295 			}
296 		}
297 		return (ENXIO);
298 	    case VT_GETACTIVE:
299 		idx = wsdisplay_getactivescreen(sc);
300 		*(int *)data = idx + 1;
301 		return (0);
302 	    case VT_ACTIVATE:
303 		idx = *(int *)data - 1;
304 		if (idx < 0)
305 			return (EINVAL);
306 		return (wsdisplay_switch((struct device *)sc, idx, 1));
307 	    case VT_WAITACTIVE:
308 		idx = *(int *)data - 1;
309 		if (idx < 0)
310 			return (EINVAL);
311 		return (wsscreen_switchwait(sc, idx));
312 	    case VT_GETSTATE:
313 #define ss ((struct vt_stat *)data)
314 		idx = wsdisplay_getactivescreen(sc);
315 		ss->v_active = idx + 1;
316 		ss->v_state = 0;
317 		maxidx = wsdisplay_maxscreenidx(sc);
318 		for (idx = 0; idx <= maxidx; idx++)
319 			if (wsdisplay_screenstate(sc, idx) == EBUSY)
320 				ss->v_state |= (1 << (idx + 1));
321 #undef s
322 		return (0);
323 
324 #ifdef WSDISPLAY_COMPAT_PCVT
325 	    case VGAPCVTID:
326 #define id ((struct pcvtid *)data)
327 		strlcpy(id->name, "pcvt", sizeof(id->name));
328 		id->rmajor = 3;
329 		id->rminor = 32;
330 #undef id
331 		return (0);
332 #endif
333 #ifdef WSDISPLAY_COMPAT_SYSCONS
334 	    case CONS_GETVERS:
335 		*(int *)data = 0x200;    /* version 2.0 */
336 		return (0);
337 #endif
338 
339 	    default:
340 		return (EPASSTHROUGH);
341 	}
342 }
343 
344 int
345 wsdisplay_usl_ioctl2(struct wsdisplay_softc *sc, struct wsscreen *scr,
346 		     u_long cmd, caddr_t data, int flag, struct proc *p)
347 {
348 	int intarg, res;
349 	u_long req;
350 	void *arg;
351 	struct usl_syncdata *sd;
352 	struct wskbd_bell_data bd;
353 
354 	switch (cmd) {
355 	    case VT_SETMODE:
356 #define newmode ((struct vt_mode *)data)
357 		if (newmode->mode == VT_PROCESS) {
358 			res = usl_sync_init(scr, &sd, p, newmode->acqsig,
359 					    newmode->relsig, newmode->frsig);
360 			if (res)
361 				return (res);
362 		} else {
363 			sd = usl_sync_get(scr);
364 			if (sd)
365 				usl_sync_done(sd);
366 		}
367 #undef newmode
368 		return (0);
369 	    case VT_GETMODE:
370 #define cmode ((struct vt_mode *)data)
371 		sd = usl_sync_get(scr);
372 		if (sd) {
373 			cmode->mode = VT_PROCESS;
374 			cmode->relsig = sd->s_relsig;
375 			cmode->acqsig = sd->s_acqsig;
376 			cmode->frsig = sd->s_frsig;
377 		} else
378 			cmode->mode = VT_AUTO;
379 #undef cmode
380 		return (0);
381 	    case VT_RELDISP:
382 #define d (*(int *)data)
383 		sd = usl_sync_get(scr);
384 		if (!sd)
385 			return (EINVAL);
386 		switch (d) {
387 		    case VT_FALSE:
388 		    case VT_TRUE:
389 			return (usl_detachack(sd, (d == VT_TRUE)));
390 		    case VT_ACKACQ:
391 			return (usl_attachack(sd, 1));
392 		    default:
393 			return (EINVAL);
394 		}
395 #undef d
396 
397 	    case KDENABIO:
398 		if (suser(p->p_ucred, &p->p_acflag) || securelevel > 1)
399 			return (EPERM);
400 		/* FALLTHRU */
401 	    case KDDISABIO:
402 #if defined(__i386__)
403 #if defined(COMPAT_10) || defined(COMPAT_11) || defined(COMPAT_FREEBSD)
404 		{
405 			/* XXX NJWLWP */
406 		struct trapframe *fp = (struct trapframe *)curlwp->l_md.md_regs;
407 		if (cmd == KDENABIO)
408 			fp->tf_eflags |= PSL_IOPL;
409 		else
410 			fp->tf_eflags &= ~PSL_IOPL;
411 		}
412 #endif
413 #endif
414 		return (0);
415 	    case KDSETRAD:
416 		/* XXX ignore for now */
417 		return (0);
418 
419 	    default:
420 		return (EPASSTHROUGH);
421 
422 	    /*
423 	     * the following are converted to wsdisplay ioctls
424 	     */
425 	    case KDSETMODE:
426 		req = WSDISPLAYIO_SMODE;
427 #define d (*(int *)data)
428 		switch (d) {
429 		    case KD_GRAPHICS:
430 			intarg = WSDISPLAYIO_MODE_MAPPED;
431 			break;
432 		    case KD_TEXT:
433 			intarg = WSDISPLAYIO_MODE_EMUL;
434 			break;
435 		    default:
436 			return (EINVAL);
437 		}
438 #undef d
439 		arg = &intarg;
440 		break;
441 	    case KDMKTONE:
442 		req = WSKBDIO_COMPLEXBELL;
443 #define d (*(int *)data)
444 		if (d) {
445 #define PCVT_SYSBEEPF	1193182
446 			if (d >> 16) {
447 				bd.which = WSKBD_BELL_DOPERIOD;
448 				bd.period = d >> 16; /* ms */
449 			}
450 			else
451 				bd.which = 0;
452 			if (d & 0xffff) {
453 				bd.which |= WSKBD_BELL_DOPITCH;
454 				bd.pitch = PCVT_SYSBEEPF/(d & 0xffff); /* Hz */
455 			}
456 		} else
457 			bd.which = 0; /* default */
458 #undef d
459 		arg = &bd;
460 		break;
461 	    case KDSETLED:
462 		req = WSKBDIO_SETLEDS;
463 		intarg = 0;
464 #define d (*(int *)data)
465 		if (d & LED_CAP)
466 			intarg |= WSKBD_LED_CAPS;
467 		if (d & LED_NUM)
468 			intarg |= WSKBD_LED_NUM;
469 		if (d & LED_SCR)
470 			intarg |= WSKBD_LED_SCROLL;
471 #undef d
472 		arg = &intarg;
473 		break;
474 	    case KDGETLED:
475 		req = WSKBDIO_GETLEDS;
476 		arg = &intarg;
477 		break;
478 #ifdef WSDISPLAY_COMPAT_RAWKBD
479 	    case KDSKBMODE:
480 		req = WSKBDIO_SETMODE;
481 		switch (*(int *)data) {
482 		    case K_RAW:
483 			intarg = WSKBD_RAW;
484 			break;
485 		    case K_XLATE:
486 			intarg = WSKBD_TRANSLATED;
487 			break;
488 		    default:
489 			return (EINVAL);
490 		}
491 		arg = &intarg;
492 		break;
493 	    case KDGKBMODE:
494 		req = WSKBDIO_GETMODE;
495 		arg = &intarg;
496 		break;
497 #endif
498 	}
499 
500 	res = wsdisplay_internal_ioctl(sc, scr, req, arg, flag, p);
501 	if (res != EPASSTHROUGH)
502 		return (res);
503 
504 	switch (cmd) {
505 	    case KDGETLED:
506 #define d (*(int *)data)
507 		d = 0;
508 		if (intarg & WSKBD_LED_CAPS)
509 			d |= LED_CAP;
510 		if (intarg & WSKBD_LED_NUM)
511 			d |= LED_NUM;
512 		if (intarg & WSKBD_LED_SCROLL)
513 			d |= LED_SCR;
514 #undef d
515 		break;
516 #ifdef WSDISPLAY_COMPAT_RAWKBD
517 	    case KDGKBMODE:
518 		*(int *)data = (intarg == WSKBD_RAW ? K_RAW : K_XLATE);
519 		break;
520 #endif
521 	}
522 
523 	return (0);
524 }
525