grf.c revision 1.32 
1/*	$NetBSD: grf.c,v 1.32 1996/12/23 09:10:01 veego Exp $	*/
2
3/*
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1990 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 *    must display the following acknowledgement:
22 *	This product includes software developed by the University of
23 *	California, Berkeley and its contributors.
24 * 4. Neither the name of the University nor the names of its contributors
25 *    may be used to endorse or promote products derived from this software
26 *    without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 *
40 * from: Utah $Hdr: grf.c 1.31 91/01/21$
41 *
42 *	@(#)grf.c	7.8 (Berkeley) 5/7/91
43 */
44
45/*
46 * Graphics display driver for the Amiga
47 * This is the hardware-independent portion of the driver.
48 * Hardware access is through the grf_softc->g_mode routine.
49 */
50
51#include <sys/param.h>
52#include <sys/proc.h>
53#include <sys/ioctl.h>
54#include <sys/device.h>
55#include <sys/file.h>
56#include <sys/malloc.h>
57#include <sys/systm.h>
58#include <sys/vnode.h>
59#include <sys/mman.h>
60#include <sys/poll.h>
61#include <vm/vm.h>
62#include <vm/vm_kern.h>
63#include <vm/vm_page.h>
64#include <vm/vm_pager.h>
65#include <machine/cpu.h>
66#include <machine/fbio.h>
67#include <amiga/amiga/color.h>	/* DEBUG */
68#include <amiga/amiga/device.h>
69#include <amiga/dev/grfioctl.h>
70#include <amiga/dev/grfvar.h>
71#include <amiga/dev/itevar.h>
72#include <amiga/dev/viewioctl.h>
73
74#include <sys/conf.h>
75#include <machine/conf.h>
76
77#include "view.h"
78#include "grf.h"
79
80#if NGRF > 0
81#include "ite.h"
82#if NITE == 0
83#define	ite_on(u,f)
84#define	ite_off(u,f)
85#define ite_reinit(d)
86#endif
87
88int grfon __P((dev_t));
89int grfoff __P((dev_t));
90int grfsinfo __P((dev_t, struct grfdyninfo *));
91#ifdef BANKEDDEVPAGER
92int grfbanked_get __P((dev_t, off_t, int));
93int grfbanked_cur __P((dev_t));
94int grfbanked_set __P((dev_t, int));
95#endif
96
97void grfattach __P((struct device *, struct device *, void *));
98int grfmatch __P((struct device *, struct cfdata *, void *));
99int grfprint __P((void *, const char *));
100/*
101 * pointers to grf drivers device structs
102 */
103struct grf_softc *grfsp[NGRF];
104
105struct cfattach grf_ca = {
106	sizeof(struct device), grfmatch, grfattach
107};
108
109struct cfdriver grf_cd = {
110	NULL, "grf", DV_DULL, NULL, 0
111};
112
113/*
114 * only used in console init.
115 */
116static struct cfdata *cfdata;
117
118/*
119 * match if the unit of grf matches its perspective
120 * low level board driver.
121 */
122int
123grfmatch(pdp, cfp, auxp)
124	struct device *pdp;
125	struct cfdata *cfp;
126	void *auxp;
127{
128
129	if (cfp->cf_unit != ((struct grf_softc *)pdp)->g_unit)
130		return(0);
131	cfdata = cfp;
132	return(1);
133}
134
135/*
136 * attach.. plug pointer in and print some info.
137 * then try and attach an ite to us. note: dp is NULL
138 * durring console init.
139 */
140void
141grfattach(pdp, dp, auxp)
142	struct device *pdp, *dp;
143	void *auxp;
144{
145	struct grf_softc *gp;
146	int maj;
147
148	gp = (struct grf_softc *)pdp;
149	grfsp[gp->g_unit] = (struct grf_softc *)pdp;
150
151	/*
152	 * find our major device number
153	 */
154	for(maj = 0; maj < nchrdev; maj++)
155		if (cdevsw[maj].d_open == grfopen)
156			break;
157
158	gp->g_grfdev = makedev(maj, gp->g_unit);
159	if (dp != NULL) {
160		printf(": width %d height %d", gp->g_display.gd_dwidth,
161		    gp->g_display.gd_dheight);
162		if (gp->g_display.gd_colors == 2)
163			printf(" monochrome\n");
164		else
165			printf(" colors %d\n", gp->g_display.gd_colors);
166	}
167
168	/*
169	 * try and attach an ite
170	 */
171	amiga_config_found(cfdata, dp, gp, grfprint);
172}
173
174int
175grfprint(auxp, pnp)
176	void *auxp;
177	const char *pnp;
178{
179	if (pnp)
180		printf("ite at %s", pnp);
181	return(UNCONF);
182}
183
184/*ARGSUSED*/
185int
186grfopen(dev, flags, devtype, p)
187	dev_t dev;
188	int flags, devtype;
189	struct proc *p;
190{
191	struct grf_softc *gp;
192
193	if (GRFUNIT(dev) >= NGRF || (gp = grfsp[GRFUNIT(dev)]) == NULL)
194		return(ENXIO);
195
196	if ((gp->g_flags & GF_ALIVE) == 0)
197		return(ENXIO);
198
199	if ((gp->g_flags & (GF_OPEN|GF_EXCLUDE)) == (GF_OPEN|GF_EXCLUDE))
200		return(EBUSY);
201
202	return(0);
203}
204
205/*ARGSUSED*/
206int
207grfclose(dev, flags, mode, p)
208	dev_t dev;
209	int flags;
210	int mode;
211	struct proc *p;
212{
213	struct grf_softc *gp;
214
215	gp = grfsp[GRFUNIT(dev)];
216	(void)grfoff(dev);
217	gp->g_flags &= GF_ALIVE;
218	return(0);
219}
220
221/*ARGSUSED*/
222int
223grfioctl(dev, cmd, data, flag, p)
224	dev_t dev;
225	u_long cmd;
226	caddr_t data;
227	int flag;
228	struct proc *p;
229{
230	struct grf_softc *gp;
231	int error;
232
233	gp = grfsp[GRFUNIT(dev)];
234	error = 0;
235
236	switch (cmd) {
237	case OGRFIOCGINFO:
238	        /* argl.. no bank-member.. */
239	  	bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo)-4);
240		break;
241	case GRFIOCGINFO:
242		bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo));
243		break;
244	case GRFIOCON:
245		error = grfon(dev);
246		break;
247	case GRFIOCOFF:
248		error = grfoff(dev);
249		break;
250	case GRFIOCSINFO:
251		error = grfsinfo(dev, (struct grfdyninfo *) data);
252		break;
253	case GRFGETVMODE:
254		return(gp->g_mode(gp, GM_GRFGETVMODE, data, 0, 0));
255	case GRFSETVMODE:
256		error = gp->g_mode(gp, GM_GRFSETVMODE, data, 0, 0);
257		if (error == 0 && gp->g_itedev && !(gp->g_flags & GF_GRFON))
258			ite_reinit(gp->g_itedev);
259		break;
260	case GRFGETNUMVM:
261		return(gp->g_mode(gp, GM_GRFGETNUMVM, data, 0, 0));
262	/*
263	 * these are all hardware dependant, and have to be resolved
264	 * in the respective driver.
265	 */
266	case GRFIOCPUTCMAP:
267	case GRFIOCGETCMAP:
268	case GRFIOCSSPRITEPOS:
269	case GRFIOCGSPRITEPOS:
270	case GRFIOCSSPRITEINF:
271	case GRFIOCGSPRITEINF:
272	case GRFIOCGSPRITEMAX:
273	case GRFIOCBITBLT:
274    	case GRFIOCSETMON:
275	case GRFIOCBLANK:	/* blank ioctl, IOCON/OFF will turn ite on */
276	case GRFTOGGLE: /* Toggles between Cirrus boards and native ECS on
277                     Amiga. 15/11/94 ill */
278		/*
279		 * We need the minor dev number to get the overlay/image
280		 * information for grf_ul.
281		 */
282		return(gp->g_mode(gp, GM_GRFIOCTL, data, cmd, dev));
283
284	case FBIOSVIDEO:
285		return(gp->g_mode(gp, GM_GRFIOCTL, data, GRFIOCBLANK, dev));
286
287	default:
288#if NVIEW > 0
289		/*
290		 * check to see whether it's a command recognized by the
291		 * view code if the unit is 0
292		 * XXX
293		 */
294		if (GRFUNIT(dev) == 0)
295			return(viewioctl(dev, cmd, data, flag, p));
296#endif
297		error = EINVAL;
298		break;
299
300	}
301	return(error);
302}
303
304/*ARGSUSED*/
305int
306grfpoll(dev, events, p)
307	dev_t dev;
308	int events;
309	struct proc *p;
310{
311	return(events & (POLLOUT | POLLWRNORM));
312}
313
314/*
315 * map the contents of a graphics display card into process'
316 * memory space.
317 */
318int
319grfmmap(dev, off, prot)
320	dev_t dev;
321	int off, prot;
322{
323	struct grf_softc *gp;
324	struct grfinfo *gi;
325
326	gp = grfsp[GRFUNIT(dev)];
327	gi = &gp->g_display;
328
329	/*
330	 * control registers
331	 */
332	if (off >= 0 && off < gi->gd_regsize)
333		return(((u_int)gi->gd_regaddr + off) >> PGSHIFT);
334
335	/*
336	 * frame buffer
337	 */
338	if (off >= gi->gd_regsize && off < gi->gd_regsize+gi->gd_fbsize) {
339		off -= gi->gd_regsize;
340#ifdef BANKEDDEVPAGER
341		if (gi->gd_bank_size)
342			off %= gi->gd_bank_size;
343#endif
344		return(((u_int)gi->gd_fbaddr + off) >> PGSHIFT);
345	}
346	/* bogus */
347	return(-1);
348}
349
350int
351grfon(dev)
352	dev_t dev;
353{
354	struct grf_softc *gp;
355
356	gp = grfsp[GRFUNIT(dev)];
357
358	if (gp->g_flags & GF_GRFON)
359		return(0);
360
361	gp->g_flags |= GF_GRFON;
362	if (gp->g_itedev != NODEV)
363		ite_off(gp->g_itedev, 3);
364
365	return(gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVON : GM_GRFON,
366							NULL, 0, 0));
367}
368
369int
370grfoff(dev)
371	dev_t dev;
372{
373	struct grf_softc *gp;
374	int error;
375
376	gp = grfsp[GRFUNIT(dev)];
377
378	if ((gp->g_flags & GF_GRFON) == 0)
379		return(0);
380
381	gp->g_flags &= ~GF_GRFON;
382	error = gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF,
383							NULL, 0, 0);
384
385	/*
386	 * Closely tied together no X's
387	 */
388	if (gp->g_itedev != NODEV)
389		ite_on(gp->g_itedev, 2);
390
391	return(error);
392}
393
394int
395grfsinfo(dev, dyninfo)
396	dev_t dev;
397	struct grfdyninfo *dyninfo;
398{
399	struct grf_softc *gp;
400	int error;
401
402	gp = grfsp[GRFUNIT(dev)];
403	error = gp->g_mode(gp, GM_GRFCONFIG, dyninfo, 0, 0);
404
405	/*
406	 * Closely tied together no X's
407	 */
408	if (gp->g_itedev != NODEV)
409		ite_reinit(gp->g_itedev);
410	return(error);
411}
412
413#ifdef BANKEDDEVPAGER
414
415int
416grfbanked_get (dev, off, prot)
417     dev_t dev;
418     off_t off;
419     int   prot;
420{
421	struct grf_softc *gp;
422	struct grfinfo *gi;
423	int error, bank;
424
425	gp = grfsp[GRFUNIT(dev)];
426	gi = &gp->g_display;
427
428	off -= gi->gd_regsize;
429	if (off < 0 || off >= gi->gd_fbsize)
430		return -1;
431
432	error = gp->g_mode(gp, GM_GRFGETBANK, &bank, off, prot);
433	return error ? -1 : bank;
434}
435
436int
437grfbanked_cur (dev)
438	dev_t dev;
439{
440	struct grf_softc *gp;
441	int error, bank;
442
443	gp = grfsp[GRFUNIT(dev)];
444
445	error = gp->g_mode(gp, GM_GRFGETCURBANK, &bank, 0, 0);
446	return(error ? -1 : bank);
447}
448
449int
450grfbanked_set (dev, bank)
451	dev_t dev;
452	int bank;
453{
454	struct grf_softc *gp;
455
456	gp = grfsp[GRFUNIT(dev)];
457	return(gp->g_mode(gp, GM_GRFSETBANK, &bank, 0, 0) ? -1 : 0);
458}
459
460#endif /* BANKEDDEVPAGER */
461#endif	/* NGRF > 0 */
462