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grf.c revision 1.2 
      1 /*	$NetBSD: grf.c,v 1.2 1995/04/10 08:55:47 mycroft 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 	extern struct view_softc	views[];
    226 	static struct grf_softc		congrf;
    227 	       struct grf_softc		*gp;
    228 	       int			maj;
    229 
    230 	/*
    231 	 * find our major device number
    232 	 */
    233 	for(maj = 0; maj < nchrdev; maj++)
    234 		if (cdevsw[maj].d_open == grfopen)
    235 			break;
    236 
    237 	/*
    238 	 * Handle exeption case: early console init
    239 	 */
    240 	if(dp == NULL) {
    241 		congrf.g_unit    = 0;
    242 		congrf.g_grfdev  = makedev(maj, 0);
    243 		congrf.g_flags   = GF_ALIVE;
    244 		congrf.g_mode    = grf_mode;
    245 		congrf.g_conpri  = grfcc_cnprobe();
    246 		congrf.g_view    = views[0].view; /* XXX */
    247 		congrf.g_viewdev = congrf.g_unit;
    248 		grfcc_iteinit(&congrf);
    249 		grf_viewsync(&congrf);
    250 
    251 		/* Attach console ite */
    252 		atari_config_found(cfdata_grf, NULL, &congrf, grfprint);
    253 		return;
    254 	}
    255 
    256 	gp = (struct grf_softc *)dp;
    257 	gp->g_unit = gp->g_device.dv_unit;
    258 	grfsp[gp->g_unit] = gp;
    259 
    260 	if((cfdata_grf != NULL) && (gp->g_unit == 0)) {
    261 		/*
    262 		 * We inited earlier just copy the info, take care
    263 		 * not to copy the device struct though.
    264 		 */
    265 		bcopy(&congrf.g_display, &gp->g_display,
    266 			(char *)&gp[1] - (char *)&gp->g_display);
    267 	}
    268 	else {
    269 		gp->g_grfdev  = makedev(maj, gp->g_unit);
    270 		gp->g_flags   = GF_ALIVE;
    271 		gp->g_mode    = grf_mode;
    272 		gp->g_conpri  = 0;
    273 		gp->g_view    = views[gp->g_unit].view; /* XXX */
    274 		gp->g_viewdev = gp->g_unit;
    275 		grfcc_iteinit(gp);
    276 		grf_viewsync(gp);
    277 	}
    278 
    279 	printf(": width %d height %d", gp->g_display.gd_dwidth,
    280 		    gp->g_display.gd_dheight);
    281 	if(gp->g_display.gd_colors == 2)
    282 		printf(" monochrome\n");
    283 	else printf(" colors %d\n", gp->g_display.gd_colors);
    284 
    285 	/*
    286 	 * try and attach an ite
    287 	 */
    288 	config_found(dp, gp, grfprint);
    289 }
    290 
    291 int
    292 grfprint(auxp, pnp)
    293 void *auxp;
    294 char *pnp;
    295 {
    296 	if(pnp)
    297 		printf("ite at %s", pnp);
    298 	return(UNCONF);
    299 }
    300 
    301 /*ARGSUSED*/
    302 int
    303 grfopen(dev, flags, devtype, p)
    304 	dev_t dev;
    305 	int flags, devtype;
    306 	struct proc *p;
    307 {
    308 	struct grf_softc *gp;
    309 
    310 	if (GRFUNIT(dev) >= NGRF)
    311 		return(ENXIO);
    312 
    313 	gp = grfsp[GRFUNIT(dev)];
    314 
    315 	if ((gp->g_flags & GF_ALIVE) == 0)
    316 		return(ENXIO);
    317 
    318 	if ((gp->g_flags & (GF_OPEN|GF_EXCLUDE)) == (GF_OPEN|GF_EXCLUDE))
    319 		return(EBUSY);
    320 
    321 	return(0);
    322 }
    323 
    324 /*ARGSUSED*/
    325 int
    326 grfclose(dev, flags)
    327 	dev_t dev;
    328 	int flags;
    329 {
    330 	struct grf_softc *gp;
    331 
    332 	gp = grfsp[GRFUNIT(dev)];
    333 	(void)grfoff(dev);
    334 	gp->g_flags &= GF_ALIVE;
    335 	return(0);
    336 }
    337 
    338 /*ARGSUSED*/
    339 int
    340 grfioctl(dev, cmd, data, flag, p)
    341 dev_t		dev;
    342 u_long		cmd;
    343 int		flag;
    344 caddr_t		data;
    345 struct proc	*p;
    346 {
    347 	struct grf_softc	*gp;
    348 	int			error;
    349 
    350 	gp = grfsp[GRFUNIT(dev)];
    351 	error = 0;
    352 
    353 	switch (cmd) {
    354 	case OGRFIOCGINFO:
    355 	        /* argl.. no bank-member.. */
    356 	  	bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo)-4);
    357 		break;
    358 	case GRFIOCGINFO:
    359 		bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo));
    360 		break;
    361 	case GRFIOCON:
    362 		error = grfon(dev);
    363 		break;
    364 	case GRFIOCOFF:
    365 		error = grfoff(dev);
    366 		break;
    367 	case GRFIOCSINFO:
    368 		error = grfsinfo(dev, (struct grfdyninfo *) data);
    369 		break;
    370 	case GRFGETVMODE:
    371 		return(gp->g_mode(gp, GM_GRFGETVMODE, data));
    372 	case GRFSETVMODE:
    373 		error = gp->g_mode(gp, GM_GRFSETVMODE, data);
    374 		if (error == 0 && gp->g_itedev)
    375 			ite_reinit(gp->g_itedev);
    376 		break;
    377 	case GRFGETNUMVM:
    378 		return(gp->g_mode(gp, GM_GRFGETNUMVM, data));
    379 	/*
    380 	 * these are all hardware dependant, and have to be resolved
    381 	 * in the respective driver.
    382 	 */
    383 	case GRFIOCPUTCMAP:
    384 	case GRFIOCGETCMAP:
    385 	case GRFIOCSSPRITEPOS:
    386 	case GRFIOCGSPRITEPOS:
    387 	case GRFIOCSSPRITEINF:
    388 	case GRFIOCGSPRITEINF:
    389 	case GRFIOCGSPRITEMAX:
    390 	default:
    391 		/*
    392 		 * check to see whether it's a command recognized by the
    393 		 * view code.
    394 		 */
    395 		if(gp->g_view != NULL)
    396 			return(viewioctl(gp->g_viewdev, cmd, data, flag, p));
    397 		error = EINVAL;
    398 		break;
    399 
    400 	}
    401 	return(error);
    402 }
    403 
    404 /*ARGSUSED*/
    405 int
    406 grfselect(dev, rw)
    407 	dev_t dev;
    408 	int rw;
    409 {
    410 	if (rw == FREAD)
    411 		return(0);
    412 	return(1);
    413 }
    414 
    415 /*
    416  * map the contents of a graphics display card into process'
    417  * memory space.
    418  */
    419 int
    420 grfmmap(dev, off, prot)
    421 dev_t	dev;
    422 int	off, prot;
    423 {
    424 panic("No grfmmap\n"); /* LWP */
    425 }
    426 
    427 int
    428 grfon(dev)
    429 	dev_t dev;
    430 {
    431 	struct grf_softc *gp;
    432 
    433 	gp = grfsp[GRFUNIT(dev)];
    434 
    435 	if (gp->g_flags & GF_GRFON)
    436 		return(0);
    437 
    438 	gp->g_flags |= GF_GRFON;
    439 	if (gp->g_itedev != NODEV)
    440 		ite_off(gp->g_itedev, 3);
    441 
    442 	return(gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVON : GM_GRFON));
    443 }
    444 
    445 int
    446 grfoff(dev)
    447 	dev_t dev;
    448 {
    449 	struct grf_softc *gp;
    450 	int error;
    451 
    452 	gp = grfsp[GRFUNIT(dev)];
    453 
    454 	if ((gp->g_flags & GF_GRFON) == 0)
    455 		return(0);
    456 
    457 	gp->g_flags &= ~GF_GRFON;
    458 	error = gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF);
    459 
    460 	/*
    461 	 * Closely tied together no X's
    462 	 */
    463 	if (gp->g_itedev != NODEV)
    464 		ite_on(gp->g_itedev, 2);
    465 
    466 	return(error);
    467 }
    468 
    469 int
    470 grfsinfo(dev, dyninfo)
    471 	dev_t dev;
    472 	struct grfdyninfo *dyninfo;
    473 {
    474 	struct grf_softc *gp;
    475 	int error;
    476 
    477 	gp = grfsp[GRFUNIT(dev)];
    478 	error = gp->g_mode(gp, GM_GRFCONFIG, dyninfo);
    479 
    480 	/*
    481 	 * Closely tied together no X's
    482 	 */
    483 	if (gp->g_itedev != NODEV)
    484 		ite_reinit(gp->g_itedev);
    485 	return(error);
    486 }
    487 
    488 /*
    489  * Get the grf-info in sync with underlying view.
    490  */
    491 static void
    492 grf_viewsync(gp)
    493 struct grf_softc *gp;
    494 {
    495 	struct view_size	vs;
    496 	bmap_t			bm;
    497 	struct grfinfo		*gi;
    498 
    499 	gi = &gp->g_display;
    500 
    501 	viewioctl(gp->g_viewdev, VIOCGBMAP, &bm, 0, -1);
    502 
    503 	gp->g_data = (caddr_t) 0xDeadBeaf; /* not particularly clean.. */
    504 
    505 	gi->gd_fbaddr  = bm.hw_address;
    506 	gi->gd_fbsize  = bm.depth*bm.bytes_per_row*bm.rows;
    507 
    508 	if(viewioctl(gp->g_viewdev, VIOCGSIZE, &vs, 0, -1)) {
    509 		/*
    510 		 * fill in some default values...
    511 		 * XXX: Should _never_ happen
    512 		 */
    513 		vs.width  = 640;
    514 		vs.height = 400;
    515 		vs.depth  = 2;
    516 	}
    517 	gi->gd_colors = 1 << vs.depth;
    518 	gi->gd_planes = vs.depth;
    519 
    520 	gi->gd_fbwidth         = vs.width;
    521 	gi->gd_fbheight        = vs.height;
    522 	gi->gd_dyn.gdi_fbx     = 0;
    523 	gi->gd_dyn.gdi_fby     = 0;
    524 	gi->gd_dyn.gdi_dwidth  = vs.width;
    525 	gi->gd_dyn.gdi_dheight = vs.height;
    526 	gi->gd_dyn.gdi_dx      = 0;
    527 	gi->gd_dyn.gdi_dy      = 0;
    528 }
    529 
    530 /*
    531  * Change the mode of the display.
    532  * Right now all we can do is grfon/grfoff.
    533  * Return a UNIX error number or 0 for success.
    534  */
    535 /*ARGSUSED*/
    536 static int
    537 grf_mode(gp, cmd, arg, a2, a3)
    538 struct grf_softc	*gp;
    539 int			cmd, a2, a3;
    540 void			*arg;
    541 {
    542 	switch (cmd) {
    543 		case GM_GRFON:
    544 			/*
    545 			 * Get in sync with view, ite might have changed it.
    546 			 */
    547 			grf_viewsync(gp);
    548 			viewioctl(gp->g_viewdev, VIOCDISPLAY, NULL, 0, -1);
    549 			return(0);
    550 	case GM_GRFOFF:
    551 			viewioctl(gp->g_viewdev, VIOCREMOVE, NULL, 0, -1);
    552 			return(0);
    553 	case GM_GRFCONFIG:
    554 	default:
    555 			break;
    556 	}
    557 	return(EINVAL);
    558 }
    559 #endif	/* NGRF > 0 */
    560