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grf.c revision 1.8 
      1 /*	$NetBSD: grf.c,v 1.8 1996/03/17 01:26:47 thorpej 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 *, void *, 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 *, void *, void *));
    108 int grfprint __P((void *, char *));
    109 /*
    110  * pointers to grf drivers device structs
    111  */
    112 struct grf_softc *grfsp[NGRF];
    113 
    114 struct cfattach grfbus_ca = {
    115 	sizeof(struct device), grfbusmatch, grfbusattach
    116 };
    117 
    118 struct cfdriver grfbus_cd = {
    119 	NULL, "grfbus", DV_DULL, sizeof(struct device)
    120 };
    121 
    122 struct cfattach grf_ca = {
    123 	sizeof(struct grf_softc), grfmatch, grfattach
    124 };
    125 
    126 struct cfdriver grf_cd = {
    127 	NULL, "grf", DV_DULL, NULL, 0
    128 };
    129 
    130 /*
    131  * only used in console init.
    132  */
    133 static struct cfdata *cfdata_gbus  = NULL;
    134 static struct cfdata *cfdata_grf   = NULL;
    135 
    136 int
    137 grfbusmatch(pdp, match, auxp)
    138 struct device	*pdp;
    139 void		*match, *auxp;
    140 {
    141 	struct cfdata *cfp = match;
    142 
    143 	if(strcmp(auxp, grfbus_cd.cd_name))
    144 		return(0);
    145 
    146 	if((atari_realconfig == 0) || (cfdata_gbus == NULL)) {
    147 		/*
    148 		 * Probe layers we depend on
    149 		 */
    150 		if(grfabs_probe() == 0)
    151 			return(0);
    152 		viewprobe();
    153 
    154 		if(atari_realconfig == 0) {
    155 			/*
    156 			 * XXX: console init opens view 0
    157 			 */
    158 			if(viewopen(0, 0))
    159 				return(0);
    160 			cfdata_gbus = cfp;
    161 		}
    162 	}
    163 	return(1);	/* Always there	*/
    164 }
    165 
    166 void
    167 grfbusattach(pdp, dp, auxp)
    168 struct device	*pdp, *dp;
    169 void		*auxp;
    170 {
    171 	static  int	did_cons = 0;
    172 		int	i;
    173 
    174 	if(dp == NULL) { /* Console init	*/
    175 		did_cons = 1;
    176 		i = 0;
    177 		atari_config_found(cfdata_gbus, NULL, (void*)&i, grfbusprint);
    178 	}
    179 	else {
    180 		printf("\n");
    181 		for(i = 0; i < NGRF; i++) {
    182 			/*
    183 			 * Skip opening view[0] when we this is the console.
    184 			 */
    185 			if(!did_cons || (i > 0))
    186 			    if(viewopen(i, 0))
    187 				break;
    188 			config_found(dp, (void*)&i, grfbusprint);
    189 		}
    190 	}
    191 }
    192 
    193 int
    194 grfbusprint(auxp, name)
    195 void  *auxp;
    196 char  *name;
    197 {
    198 	if(name == NULL)
    199 		return(UNCONF);
    200 	return(QUIET);
    201 }
    202 
    203 
    204 int
    205 grfmatch(pdp, match, auxp)
    206 struct device	*pdp;
    207 void	*match, *auxp;
    208 {
    209 	int	unit = *(int*)auxp;
    210 	struct cfdata *cfp = match;
    211 
    212 	/*
    213 	 * Match only on unit indicated by grfbus attach.
    214 	 */
    215 	if(cfp->cf_unit != unit)
    216 		return(0);
    217 
    218 	cfdata_grf = cfp;
    219 	return(1);
    220 }
    221 
    222 /*
    223  * attach: initialize the grf-structure and try to attach an ite to us.
    224  * note  : dp is NULL during early console init.
    225  */
    226 void
    227 grfattach(pdp, dp, auxp)
    228 struct device	*pdp, *dp;
    229 void		*auxp;
    230 {
    231 	static struct grf_softc		congrf;
    232 	       struct grf_softc		*gp;
    233 	       int			maj;
    234 
    235 	/*
    236 	 * find our major device number
    237 	 */
    238 	for(maj = 0; maj < nchrdev; maj++)
    239 		if (cdevsw[maj].d_open == grfopen)
    240 			break;
    241 
    242 	/*
    243 	 * Handle exeption case: early console init
    244 	 */
    245 	if(dp == NULL) {
    246 		congrf.g_unit    = 0;
    247 		congrf.g_grfdev  = makedev(maj, 0);
    248 		congrf.g_flags   = GF_ALIVE;
    249 		congrf.g_mode    = grf_mode;
    250 		congrf.g_conpri  = grfcc_cnprobe();
    251 		congrf.g_viewdev = congrf.g_unit;
    252 		grfcc_iteinit(&congrf);
    253 		grf_viewsync(&congrf);
    254 
    255 		/* Attach console ite */
    256 		atari_config_found(cfdata_grf, NULL, &congrf, grfprint);
    257 		return;
    258 	}
    259 
    260 	gp = (struct grf_softc *)dp;
    261 	gp->g_unit = gp->g_device.dv_unit;
    262 	grfsp[gp->g_unit] = gp;
    263 
    264 	if((cfdata_grf != NULL) && (gp->g_unit == 0)) {
    265 		/*
    266 		 * We inited earlier just copy the info, take care
    267 		 * not to copy the device struct though.
    268 		 */
    269 		bcopy(&congrf.g_display, &gp->g_display,
    270 			(char *)&gp[1] - (char *)&gp->g_display);
    271 	}
    272 	else {
    273 		gp->g_grfdev  = makedev(maj, gp->g_unit);
    274 		gp->g_flags   = GF_ALIVE;
    275 		gp->g_mode    = grf_mode;
    276 		gp->g_conpri  = 0;
    277 		gp->g_viewdev = gp->g_unit;
    278 		grfcc_iteinit(gp);
    279 		grf_viewsync(gp);
    280 	}
    281 
    282 	printf(": width %d height %d", gp->g_display.gd_dwidth,
    283 		    gp->g_display.gd_dheight);
    284 	if(gp->g_display.gd_colors == 2)
    285 		printf(" monochrome\n");
    286 	else printf(" colors %d\n", gp->g_display.gd_colors);
    287 
    288 	/*
    289 	 * try and attach an ite
    290 	 */
    291 	config_found(dp, gp, grfprint);
    292 }
    293 
    294 int
    295 grfprint(auxp, pnp)
    296 void *auxp;
    297 char *pnp;
    298 {
    299 	if(pnp)
    300 		printf("ite at %s", pnp);
    301 	return(UNCONF);
    302 }
    303 
    304 /*ARGSUSED*/
    305 int
    306 grfopen(dev, flags, devtype, p)
    307 	dev_t dev;
    308 	int flags, devtype;
    309 	struct proc *p;
    310 {
    311 	struct grf_softc *gp;
    312 
    313 	if (GRFUNIT(dev) >= NGRF)
    314 		return(ENXIO);
    315 
    316 	gp = grfsp[GRFUNIT(dev)];
    317 
    318 	if ((gp->g_flags & GF_ALIVE) == 0)
    319 		return(ENXIO);
    320 
    321 	if ((gp->g_flags & (GF_OPEN|GF_EXCLUDE)) == (GF_OPEN|GF_EXCLUDE))
    322 		return(EBUSY);
    323 	grf_viewsync(gp);
    324 
    325 	return(0);
    326 }
    327 
    328 /*ARGSUSED*/
    329 int
    330 grfclose(dev, flags)
    331 	dev_t dev;
    332 	int flags;
    333 {
    334 	struct grf_softc *gp;
    335 
    336 	gp = grfsp[GRFUNIT(dev)];
    337 	(void)grfoff(dev);
    338 	gp->g_flags &= GF_ALIVE;
    339 	return(0);
    340 }
    341 
    342 /*ARGSUSED*/
    343 int
    344 grfioctl(dev, cmd, data, flag, p)
    345 dev_t		dev;
    346 u_long		cmd;
    347 int		flag;
    348 caddr_t		data;
    349 struct proc	*p;
    350 {
    351 	struct grf_softc	*gp;
    352 	int			error;
    353 
    354 	gp = grfsp[GRFUNIT(dev)];
    355 	error = 0;
    356 
    357 	switch (cmd) {
    358 	case OGRFIOCGINFO:
    359 	        /* argl.. no bank-member.. */
    360 	  	bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo)-4);
    361 		break;
    362 	case GRFIOCGINFO:
    363 		bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo));
    364 		break;
    365 	case GRFIOCON:
    366 		error = grfon(dev);
    367 		break;
    368 	case GRFIOCOFF:
    369 		error = grfoff(dev);
    370 		break;
    371 	case GRFIOCSINFO:
    372 		error = grfsinfo(dev, (struct grfdyninfo *) data);
    373 		break;
    374 	case GRFGETVMODE:
    375 		return(gp->g_mode(gp, GM_GRFGETVMODE, data, 0, 0));
    376 	case GRFSETVMODE:
    377 		error = gp->g_mode(gp, GM_GRFSETVMODE, data, 0, 0);
    378 		if (error == 0 && gp->g_itedev)
    379 			ite_reinit(gp->g_itedev);
    380 		break;
    381 	case GRFGETNUMVM:
    382 		return(gp->g_mode(gp, GM_GRFGETNUMVM, data, 0, 0));
    383 	/*
    384 	 * these are all hardware dependant, and have to be resolved
    385 	 * in the respective driver.
    386 	 */
    387 	case GRFIOCPUTCMAP:
    388 	case GRFIOCGETCMAP:
    389 	case GRFIOCSSPRITEPOS:
    390 	case GRFIOCGSPRITEPOS:
    391 	case GRFIOCSSPRITEINF:
    392 	case GRFIOCGSPRITEINF:
    393 	case GRFIOCGSPRITEMAX:
    394 	default:
    395 		/*
    396 		 * check to see whether it's a command recognized by the
    397 		 * view code.
    398 		 */
    399 		return(viewioctl(gp->g_viewdev, cmd, data, flag, p));
    400 		error = EINVAL;
    401 		break;
    402 
    403 	}
    404 	return(error);
    405 }
    406 
    407 /*ARGSUSED*/
    408 int
    409 grfselect(dev, rw)
    410 	dev_t dev;
    411 	int rw;
    412 {
    413 	if (rw == FREAD)
    414 		return(0);
    415 	return(1);
    416 }
    417 
    418 /*
    419  * map the contents of a graphics display card into process'
    420  * memory space.
    421  */
    422 int
    423 grfmmap(dev, off, prot)
    424 dev_t	dev;
    425 int	off, prot;
    426 {
    427 	struct grf_softc	*gp;
    428 	struct grfinfo		*gi;
    429 
    430 	gp = grfsp[GRFUNIT(dev)];
    431 	gi = &gp->g_display;
    432 
    433 	/*
    434 	 * frame buffer
    435 	 */
    436 	if ((off >= 0) && (off < gi->gd_fbsize))
    437 		return (((u_int)gi->gd_fbaddr + off) >> PGSHIFT);
    438 	return(-1);
    439 }
    440 
    441 int
    442 grfon(dev)
    443 	dev_t dev;
    444 {
    445 	struct grf_softc *gp;
    446 
    447 	gp = grfsp[GRFUNIT(dev)];
    448 
    449 	if (gp->g_flags & GF_GRFON)
    450 		return(0);
    451 
    452 	gp->g_flags |= GF_GRFON;
    453 	if (gp->g_itedev != NODEV)
    454 		ite_off(gp->g_itedev, 3);
    455 
    456 	return(gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVON : GM_GRFON,
    457 							NULL, 0, 0));
    458 }
    459 
    460 int
    461 grfoff(dev)
    462 	dev_t dev;
    463 {
    464 	struct grf_softc *gp;
    465 	int error;
    466 
    467 	gp = grfsp[GRFUNIT(dev)];
    468 
    469 	if ((gp->g_flags & GF_GRFON) == 0)
    470 		return(0);
    471 
    472 	gp->g_flags &= ~GF_GRFON;
    473 	error = gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF,
    474 						NULL, 0, 0);
    475 
    476 	/*
    477 	 * Closely tied together no X's
    478 	 */
    479 	if (gp->g_itedev != NODEV)
    480 		ite_on(gp->g_itedev, 2);
    481 
    482 	return(error);
    483 }
    484 
    485 int
    486 grfsinfo(dev, dyninfo)
    487 	dev_t dev;
    488 	struct grfdyninfo *dyninfo;
    489 {
    490 	struct grf_softc *gp;
    491 	int error;
    492 
    493 	gp = grfsp[GRFUNIT(dev)];
    494 	error = gp->g_mode(gp, GM_GRFCONFIG, dyninfo, 0, 0);
    495 
    496 	/*
    497 	 * Closely tied together no X's
    498 	 */
    499 	if (gp->g_itedev != NODEV)
    500 		ite_reinit(gp->g_itedev);
    501 	return(error);
    502 }
    503 
    504 /*
    505  * Get the grf-info in sync with underlying view.
    506  */
    507 static void
    508 grf_viewsync(gp)
    509 struct grf_softc *gp;
    510 {
    511 	struct view_size	vs;
    512 	bmap_t			bm;
    513 	struct grfinfo		*gi;
    514 
    515 	gi = &gp->g_display;
    516 
    517 	viewioctl(gp->g_viewdev, VIOCGBMAP, &bm, 0, -1);
    518 
    519 	gp->g_data = (caddr_t) 0xDeadBeaf; /* not particularly clean.. */
    520 
    521 	gi->gd_fbaddr  = bm.hw_address;
    522 	gi->gd_fbsize  = bm.depth*bm.bytes_per_row*bm.rows;
    523 
    524 	if(viewioctl(gp->g_viewdev, VIOCGSIZE, &vs, 0, -1)) {
    525 		/*
    526 		 * fill in some default values...
    527 		 * XXX: Should _never_ happen
    528 		 */
    529 		vs.width  = 640;
    530 		vs.height = 400;
    531 		vs.depth  = 1;
    532 	}
    533 	gi->gd_colors = 1 << vs.depth;
    534 	gi->gd_planes = vs.depth;
    535 
    536 	gi->gd_fbwidth         = vs.width;
    537 	gi->gd_fbheight        = vs.height;
    538 	gi->gd_dyn.gdi_fbx     = 0;
    539 	gi->gd_dyn.gdi_fby     = 0;
    540 	gi->gd_dyn.gdi_dwidth  = vs.width;
    541 	gi->gd_dyn.gdi_dheight = vs.height;
    542 	gi->gd_dyn.gdi_dx      = 0;
    543 	gi->gd_dyn.gdi_dy      = 0;
    544 }
    545 
    546 /*
    547  * Change the mode of the display.
    548  * Right now all we can do is grfon/grfoff.
    549  * Return a UNIX error number or 0 for success.
    550  */
    551 /*ARGSUSED*/
    552 static int
    553 grf_mode(gp, cmd, arg, a2, a3)
    554 struct grf_softc	*gp;
    555 int			cmd, a2, a3;
    556 void			*arg;
    557 {
    558 	switch (cmd) {
    559 		case GM_GRFON:
    560 			/*
    561 			 * Get in sync with view, ite might have changed it.
    562 			 */
    563 			grf_viewsync(gp);
    564 			viewioctl(gp->g_viewdev, VIOCDISPLAY, NULL, 0, -1);
    565 			return(0);
    566 	case GM_GRFOFF:
    567 			viewioctl(gp->g_viewdev, VIOCREMOVE, NULL, 0, -1);
    568 			return(0);
    569 	case GM_GRFCONFIG:
    570 	default:
    571 			break;
    572 	}
    573 	return(EINVAL);
    574 }
    575 #endif	/* NGRF > 0 */
    576