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grf.c revision 1.5 
      1 /*	$NetBSD: grf.c,v 1.5 1995/06/09 19:55:13 leo Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Leo Weppelman
      5  * Copyright (c) 1988 University of Utah.
      6  * Copyright (c) 1990 The Regents of the University of California.
      7  * All rights reserved.
      8  *
      9  * This code is derived from software contributed to Berkeley by
     10  * the Systems Programming Group of the University of Utah Computer
     11  * Science Department.
     12  *
     13  * Redistribution and use in source and binary forms, with or without
     14  * modification, are permitted provided that the following conditions
     15  * are met:
     16  * 1. Redistributions of source code must retain the above copyright
     17  *    notice, this list of conditions and the following disclaimer.
     18  * 2. Redistributions in binary form must reproduce the above copyright
     19  *    notice, this list of conditions and the following disclaimer in the
     20  *    documentation and/or other materials provided with the distribution.
     21  * 3. All advertising materials mentioning features or use of this software
     22  *    must display the following acknowledgement:
     23  *	This product includes software developed by the University of
     24  *	California, Berkeley and its contributors.
     25  * 4. Neither the name of the University nor the names of its contributors
     26  *    may be used to endorse or promote products derived from this software
     27  *    without specific prior written permission.
     28  *
     29  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     30  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     31  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     33  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     34  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     35  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     36  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     37  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     38  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     39  * SUCH DAMAGE.
     40  *
     41  * from: Utah $Hdr: grf.c 1.31 91/01/21$
     42  *
     43  *	@(#)grf.c	7.8 (Berkeley) 5/7/91
     44  */
     45 
     46 /*
     47  * Graphics display driver for the Atari
     48  * This is the hardware-independent portion of the driver.
     49  * Hardware access is through the grf_softc->g_mode routine.
     50  */
     51 
     52 #include <sys/param.h>
     53 #include <sys/proc.h>
     54 #include <sys/ioctl.h>
     55 #include <sys/device.h>
     56 #include <sys/file.h>
     57 #include <sys/malloc.h>
     58 #include <sys/conf.h>
     59 #include <sys/systm.h>
     60 #include <sys/vnode.h>
     61 #include <sys/mman.h>
     62 #include <vm/vm.h>
     63 #include <vm/vm_kern.h>
     64 #include <vm/vm_page.h>
     65 #include <vm/vm_pager.h>
     66 #include <machine/cpu.h>
     67 #include <atari/atari/device.h>
     68 #include <atari/dev/grfioctl.h>
     69 #include <atari/dev/grfabs_reg.h>
     70 #include <atari/dev/grfvar.h>
     71 #include <atari/dev/itevar.h>
     72 #include <atari/dev/viewioctl.h>
     73 #include <atari/dev/viewvar.h>
     74 
     75 #include "grf.h"
     76 #if NGRF > 0
     77 
     78 #include "ite.h"
     79 #if NITE == 0
     80 #define	ite_on(u,f)
     81 #define	ite_off(u,f)
     82 #define ite_reinit(d)
     83 #endif
     84 
     85 int grfopen __P((dev_t, int, int, struct proc *));
     86 int grfclose __P((dev_t, int));
     87 int grfioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
     88 int grfselect __P((dev_t, int));
     89 int grfmmap __P((dev_t, int, int));
     90 
     91 int grfon __P((dev_t));
     92 int grfoff __P((dev_t));
     93 int grfsinfo __P((dev_t, struct grfdyninfo *));
     94 #ifdef BANKEDDEVPAGER
     95 int grfbanked_get __P((dev_t, off_t, int));
     96 int grfbanked_cur __P((dev_t));
     97 int grfbanked_set __P((dev_t, int));
     98 #endif
     99 static void grf_viewsync __P((struct grf_softc *));
    100 static int  grf_mode __P((struct grf_softc *, int, void *, int, int));
    101 
    102 int grfbusprint __P((void *auxp, char *));
    103 int grfbusmatch __P((struct device *, struct cfdata *, void *));
    104 void grfbusattach __P((struct device *, struct device *, void *));
    105 
    106 void grfattach __P((struct device *, struct device *, void *));
    107 int grfmatch __P((struct device *, struct cfdata *, void *));
    108 int grfprint __P((void *, char *));
    109 /*
    110  * pointers to grf drivers device structs
    111  */
    112 struct grf_softc *grfsp[NGRF];
    113 
    114 
    115 struct cfdriver grfbuscd = {
    116 	NULL, "grfbus", (cfmatch_t)grfbusmatch, grfbusattach, DV_DULL,
    117 	sizeof(struct device)
    118 };
    119 
    120 struct cfdriver grfcd = {
    121 	NULL, "grf", (cfmatch_t)grfmatch, grfattach, DV_DULL,
    122 	sizeof(struct grf_softc), NULL, 0
    123 };
    124 
    125 /*
    126  * only used in console init.
    127  */
    128 static struct cfdata *cfdata_gbus  = NULL;
    129 static struct cfdata *cfdata_grf   = NULL;
    130 
    131 int
    132 grfbusmatch(pdp, cfp, auxp)
    133 struct device	*pdp;
    134 struct cfdata	*cfp;
    135 void		*auxp;
    136 {
    137 	if(strcmp(auxp, grfbuscd.cd_name))
    138 		return(0);
    139 
    140 	if((atari_realconfig == 0) || (cfdata_gbus == NULL)) {
    141 		/*
    142 		 * Probe layers we depend on
    143 		 */
    144 		if(grfabs_probe() == 0)
    145 			return(0);
    146 		viewprobe();
    147 
    148 		if(atari_realconfig == 0) {
    149 			/*
    150 			 * XXX: console init opens view 0
    151 			 */
    152 			if(viewopen(0, 0))
    153 				return(0);
    154 			cfdata_gbus = cfp;
    155 		}
    156 	}
    157 	return(1);	/* Always there	*/
    158 }
    159 
    160 void
    161 grfbusattach(pdp, dp, auxp)
    162 struct device	*pdp, *dp;
    163 void		*auxp;
    164 {
    165 	static  int	did_cons = 0;
    166 		int	i;
    167 
    168 	if(dp == NULL) { /* Console init	*/
    169 		did_cons = 1;
    170 		i = 0;
    171 		atari_config_found(cfdata_gbus, NULL, (void*)&i, grfbusprint);
    172 	}
    173 	else {
    174 		printf("\n");
    175 		for(i = 0; i < NGRF; i++) {
    176 			/*
    177 			 * Skip opening view[0] when we this is the console.
    178 			 */
    179 			if(!did_cons || (i > 0))
    180 			    if(viewopen(i, 0))
    181 				break;
    182 			config_found(dp, (void*)&i, grfbusprint);
    183 		}
    184 	}
    185 }
    186 
    187 int
    188 grfbusprint(auxp, name)
    189 void  *auxp;
    190 char  *name;
    191 {
    192 	if(name == NULL)
    193 		return(UNCONF);
    194 	return(QUIET);
    195 }
    196 
    197 
    198 int
    199 grfmatch(pdp, cfp, auxp)
    200 struct device	*pdp;
    201 struct cfdata	*cfp;
    202 void	*auxp;
    203 {
    204 	int	unit = *(int*)auxp;
    205 
    206 	/*
    207 	 * Match only on unit indicated by grfbus attach.
    208 	 */
    209 	if(cfp->cf_unit != unit)
    210 		return(0);
    211 
    212 	cfdata_grf = cfp;
    213 	return(1);
    214 }
    215 
    216 /*
    217  * attach: initialize the grf-structure and try to attach an ite to us.
    218  * note  : dp is NULL during early console init.
    219  */
    220 void
    221 grfattach(pdp, dp, auxp)
    222 struct device	*pdp, *dp;
    223 void		*auxp;
    224 {
    225 	static struct grf_softc		congrf;
    226 	       struct grf_softc		*gp;
    227 	       int			maj;
    228 
    229 	/*
    230 	 * find our major device number
    231 	 */
    232 	for(maj = 0; maj < nchrdev; maj++)
    233 		if (cdevsw[maj].d_open == grfopen)
    234 			break;
    235 
    236 	/*
    237 	 * Handle exeption case: early console init
    238 	 */
    239 	if(dp == NULL) {
    240 		congrf.g_unit    = 0;
    241 		congrf.g_grfdev  = makedev(maj, 0);
    242 		congrf.g_flags   = GF_ALIVE;
    243 		congrf.g_mode    = grf_mode;
    244 		congrf.g_conpri  = grfcc_cnprobe();
    245 		congrf.g_viewdev = congrf.g_unit;
    246 		grfcc_iteinit(&congrf);
    247 		grf_viewsync(&congrf);
    248 
    249 		/* Attach console ite */
    250 		atari_config_found(cfdata_grf, NULL, &congrf, grfprint);
    251 		return;
    252 	}
    253 
    254 	gp = (struct grf_softc *)dp;
    255 	gp->g_unit = gp->g_device.dv_unit;
    256 	grfsp[gp->g_unit] = gp;
    257 
    258 	if((cfdata_grf != NULL) && (gp->g_unit == 0)) {
    259 		/*
    260 		 * We inited earlier just copy the info, take care
    261 		 * not to copy the device struct though.
    262 		 */
    263 		bcopy(&congrf.g_display, &gp->g_display,
    264 			(char *)&gp[1] - (char *)&gp->g_display);
    265 	}
    266 	else {
    267 		gp->g_grfdev  = makedev(maj, gp->g_unit);
    268 		gp->g_flags   = GF_ALIVE;
    269 		gp->g_mode    = grf_mode;
    270 		gp->g_conpri  = 0;
    271 		gp->g_viewdev = gp->g_unit;
    272 		grfcc_iteinit(gp);
    273 		grf_viewsync(gp);
    274 	}
    275 
    276 	printf(": width %d height %d", gp->g_display.gd_dwidth,
    277 		    gp->g_display.gd_dheight);
    278 	if(gp->g_display.gd_colors == 2)
    279 		printf(" monochrome\n");
    280 	else printf(" colors %d\n", gp->g_display.gd_colors);
    281 
    282 	/*
    283 	 * try and attach an ite
    284 	 */
    285 	config_found(dp, gp, grfprint);
    286 }
    287 
    288 int
    289 grfprint(auxp, pnp)
    290 void *auxp;
    291 char *pnp;
    292 {
    293 	if(pnp)
    294 		printf("ite at %s", pnp);
    295 	return(UNCONF);
    296 }
    297 
    298 /*ARGSUSED*/
    299 int
    300 grfopen(dev, flags, devtype, p)
    301 	dev_t dev;
    302 	int flags, devtype;
    303 	struct proc *p;
    304 {
    305 	struct grf_softc *gp;
    306 
    307 	if (GRFUNIT(dev) >= NGRF)
    308 		return(ENXIO);
    309 
    310 	gp = grfsp[GRFUNIT(dev)];
    311 
    312 	if ((gp->g_flags & GF_ALIVE) == 0)
    313 		return(ENXIO);
    314 
    315 	if ((gp->g_flags & (GF_OPEN|GF_EXCLUDE)) == (GF_OPEN|GF_EXCLUDE))
    316 		return(EBUSY);
    317 
    318 	return(0);
    319 }
    320 
    321 /*ARGSUSED*/
    322 int
    323 grfclose(dev, flags)
    324 	dev_t dev;
    325 	int flags;
    326 {
    327 	struct grf_softc *gp;
    328 
    329 	gp = grfsp[GRFUNIT(dev)];
    330 	(void)grfoff(dev);
    331 	gp->g_flags &= GF_ALIVE;
    332 	return(0);
    333 }
    334 
    335 /*ARGSUSED*/
    336 int
    337 grfioctl(dev, cmd, data, flag, p)
    338 dev_t		dev;
    339 u_long		cmd;
    340 int		flag;
    341 caddr_t		data;
    342 struct proc	*p;
    343 {
    344 	struct grf_softc	*gp;
    345 	int			error;
    346 
    347 	gp = grfsp[GRFUNIT(dev)];
    348 	error = 0;
    349 
    350 	switch (cmd) {
    351 	case OGRFIOCGINFO:
    352 	        /* argl.. no bank-member.. */
    353 	  	bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo)-4);
    354 		break;
    355 	case GRFIOCGINFO:
    356 		bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo));
    357 		break;
    358 	case GRFIOCON:
    359 		error = grfon(dev);
    360 		break;
    361 	case GRFIOCOFF:
    362 		error = grfoff(dev);
    363 		break;
    364 	case GRFIOCSINFO:
    365 		error = grfsinfo(dev, (struct grfdyninfo *) data);
    366 		break;
    367 	case GRFGETVMODE:
    368 		return(gp->g_mode(gp, GM_GRFGETVMODE, data));
    369 	case GRFSETVMODE:
    370 		error = gp->g_mode(gp, GM_GRFSETVMODE, data);
    371 		if (error == 0 && gp->g_itedev)
    372 			ite_reinit(gp->g_itedev);
    373 		break;
    374 	case GRFGETNUMVM:
    375 		return(gp->g_mode(gp, GM_GRFGETNUMVM, data));
    376 	/*
    377 	 * these are all hardware dependant, and have to be resolved
    378 	 * in the respective driver.
    379 	 */
    380 	case GRFIOCPUTCMAP:
    381 	case GRFIOCGETCMAP:
    382 	case GRFIOCSSPRITEPOS:
    383 	case GRFIOCGSPRITEPOS:
    384 	case GRFIOCSSPRITEINF:
    385 	case GRFIOCGSPRITEINF:
    386 	case GRFIOCGSPRITEMAX:
    387 	default:
    388 		/*
    389 		 * check to see whether it's a command recognized by the
    390 		 * view code.
    391 		 */
    392 		return(viewioctl(gp->g_viewdev, cmd, data, flag, p));
    393 		error = EINVAL;
    394 		break;
    395 
    396 	}
    397 	return(error);
    398 }
    399 
    400 /*ARGSUSED*/
    401 int
    402 grfselect(dev, rw)
    403 	dev_t dev;
    404 	int rw;
    405 {
    406 	if (rw == FREAD)
    407 		return(0);
    408 	return(1);
    409 }
    410 
    411 /*
    412  * map the contents of a graphics display card into process'
    413  * memory space.
    414  */
    415 int
    416 grfmmap(dev, off, prot)
    417 dev_t	dev;
    418 int	off, prot;
    419 {
    420 	struct grf_softc	*gp;
    421 	struct grfinfo		*gi;
    422 
    423 	gp = grfsp[GRFUNIT(dev)];
    424 	gi = &gp->g_display;
    425 
    426 	/*
    427 	 * frame buffer
    428 	 */
    429 	if ((off >= 0) && (off < gi->gd_fbsize))
    430 		return (((u_int)gi->gd_fbaddr + off) >> PGSHIFT);
    431 	return(-1);
    432 }
    433 
    434 int
    435 grfon(dev)
    436 	dev_t dev;
    437 {
    438 	struct grf_softc *gp;
    439 
    440 	gp = grfsp[GRFUNIT(dev)];
    441 
    442 	if (gp->g_flags & GF_GRFON)
    443 		return(0);
    444 
    445 	gp->g_flags |= GF_GRFON;
    446 	if (gp->g_itedev != NODEV)
    447 		ite_off(gp->g_itedev, 3);
    448 
    449 	return(gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVON : GM_GRFON));
    450 }
    451 
    452 int
    453 grfoff(dev)
    454 	dev_t dev;
    455 {
    456 	struct grf_softc *gp;
    457 	int error;
    458 
    459 	gp = grfsp[GRFUNIT(dev)];
    460 
    461 	if ((gp->g_flags & GF_GRFON) == 0)
    462 		return(0);
    463 
    464 	gp->g_flags &= ~GF_GRFON;
    465 	error = gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF);
    466 
    467 	/*
    468 	 * Closely tied together no X's
    469 	 */
    470 	if (gp->g_itedev != NODEV)
    471 		ite_on(gp->g_itedev, 2);
    472 
    473 	return(error);
    474 }
    475 
    476 int
    477 grfsinfo(dev, dyninfo)
    478 	dev_t dev;
    479 	struct grfdyninfo *dyninfo;
    480 {
    481 	struct grf_softc *gp;
    482 	int error;
    483 
    484 	gp = grfsp[GRFUNIT(dev)];
    485 	error = gp->g_mode(gp, GM_GRFCONFIG, dyninfo);
    486 
    487 	/*
    488 	 * Closely tied together no X's
    489 	 */
    490 	if (gp->g_itedev != NODEV)
    491 		ite_reinit(gp->g_itedev);
    492 	return(error);
    493 }
    494 
    495 /*
    496  * Get the grf-info in sync with underlying view.
    497  */
    498 static void
    499 grf_viewsync(gp)
    500 struct grf_softc *gp;
    501 {
    502 	struct view_size	vs;
    503 	bmap_t			bm;
    504 	struct grfinfo		*gi;
    505 
    506 	gi = &gp->g_display;
    507 
    508 	viewioctl(gp->g_viewdev, VIOCGBMAP, &bm, 0, -1);
    509 
    510 	gp->g_data = (caddr_t) 0xDeadBeaf; /* not particularly clean.. */
    511 
    512 	gi->gd_fbaddr  = bm.hw_address;
    513 	gi->gd_fbsize  = bm.depth*bm.bytes_per_row*bm.rows;
    514 
    515 	if(viewioctl(gp->g_viewdev, VIOCGSIZE, &vs, 0, -1)) {
    516 		/*
    517 		 * fill in some default values...
    518 		 * XXX: Should _never_ happen
    519 		 */
    520 		vs.width  = 640;
    521 		vs.height = 400;
    522 		vs.depth  = 1;
    523 	}
    524 	gi->gd_colors = 1 << vs.depth;
    525 	gi->gd_planes = vs.depth;
    526 
    527 	gi->gd_fbwidth         = vs.width;
    528 	gi->gd_fbheight        = vs.height;
    529 	gi->gd_dyn.gdi_fbx     = 0;
    530 	gi->gd_dyn.gdi_fby     = 0;
    531 	gi->gd_dyn.gdi_dwidth  = vs.width;
    532 	gi->gd_dyn.gdi_dheight = vs.height;
    533 	gi->gd_dyn.gdi_dx      = 0;
    534 	gi->gd_dyn.gdi_dy      = 0;
    535 }
    536 
    537 /*
    538  * Change the mode of the display.
    539  * Right now all we can do is grfon/grfoff.
    540  * Return a UNIX error number or 0 for success.
    541  */
    542 /*ARGSUSED*/
    543 static int
    544 grf_mode(gp, cmd, arg, a2, a3)
    545 struct grf_softc	*gp;
    546 int			cmd, a2, a3;
    547 void			*arg;
    548 {
    549 	switch (cmd) {
    550 		case GM_GRFON:
    551 			/*
    552 			 * Get in sync with view, ite might have changed it.
    553 			 */
    554 			grf_viewsync(gp);
    555 			viewioctl(gp->g_viewdev, VIOCDISPLAY, NULL, 0, -1);
    556 			return(0);
    557 	case GM_GRFOFF:
    558 			viewioctl(gp->g_viewdev, VIOCREMOVE, NULL, 0, -1);
    559 			return(0);
    560 	case GM_GRFCONFIG:
    561 	default:
    562 			break;
    563 	}
    564 	return(EINVAL);
    565 }
    566 #endif	/* NGRF > 0 */
    567