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grf.c revision 1.21 
      1 /*	$NetBSD: grf.c,v 1.21 1998/01/12 18:04:04 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 <sys/poll.h>
     63 #include <vm/vm.h>
     64 #include <vm/vm_kern.h>
     65 #include <vm/vm_page.h>
     66 #include <vm/vm_pager.h>
     67 #include <machine/cpu.h>
     68 #include <atari/atari/device.h>
     69 #include <atari/dev/grfioctl.h>
     70 #include <atari/dev/grfabs_reg.h>
     71 #include <atari/dev/grfvar.h>
     72 #include <atari/dev/itevar.h>
     73 #include <atari/dev/viewioctl.h>
     74 #include <atari/dev/viewvar.h>
     75 
     76 #include "grfcc.h"
     77 #include "grfet.h"
     78 #define	NGRF	(NGRFCC + NGRFET)
     79 
     80 #if NGRF > 0
     81 
     82 #include "ite.h"
     83 #if NITE == 0
     84 #define	ite_on(u,f)
     85 #define	ite_off(u,f)
     86 #define ite_reinit(d)
     87 #endif
     88 
     89 int grfon __P((dev_t));
     90 int grfoff __P((dev_t));
     91 int grfsinfo __P((dev_t, struct grfdyninfo *));
     92 #ifdef BANKEDDEVPAGER
     93 int grfbanked_get __P((dev_t, off_t, int));
     94 int grfbanked_cur __P((dev_t));
     95 int grfbanked_set __P((dev_t, int));
     96 #endif
     97 
     98 int grfbusprint __P((void *auxp, const char *));
     99 int grfbusmatch __P((struct device *, struct cfdata *, void *));
    100 void grfbusattach __P((struct device *, struct device *, void *));
    101 
    102 /*
    103  * pointers to grf drivers device structs
    104  */
    105 struct grf_softc *grfsp[NGRF]; /* XXX */
    106 
    107 struct cfattach grfbus_ca = {
    108 	sizeof(struct device), grfbusmatch, grfbusattach
    109 };
    110 
    111 extern struct cfdriver grfbus_cd;
    112 
    113 /*
    114  * only used in console init.
    115  */
    116 static struct cfdata *cfdata_gbus  = NULL;
    117 
    118 int
    119 grfbusmatch(pdp, cfp, auxp)
    120 struct device	*pdp;
    121 struct cfdata	*cfp;
    122 void		*auxp;
    123 {
    124 	if(strcmp(auxp, grfbus_cd.cd_name))
    125 		return(0);
    126 
    127 	if(atari_realconfig == 0)
    128 		cfdata_gbus = cfp;
    129 	return(1);	/* Always there	*/
    130 }
    131 
    132 void
    133 grfbusattach(pdp, dp, auxp)
    134 struct device	*pdp, *dp;
    135 void		*auxp;
    136 {
    137     grf_auxp_t	grf_auxp;
    138 
    139     grf_auxp.busprint       = grfbusprint;
    140     grf_auxp.from_bus_match = 1;
    141 
    142     if(dp == NULL) /* Console init	*/
    143 	atari_config_found(cfdata_gbus, NULL, (void*)&grf_auxp, grfbusprint);
    144     else {
    145 	printf("\n");
    146 	config_found(dp, (void*)&grf_auxp, grfbusprint);
    147     }
    148 }
    149 
    150 int
    151 grfbusprint(auxp, name)
    152 void		*auxp;
    153 const char	*name;
    154 {
    155 	if(name == NULL)
    156 		return(UNCONF);
    157 	return(QUIET);
    158 }
    159 
    160 /*ARGSUSED*/
    161 int
    162 grfopen(dev, flags, devtype, p)
    163 	dev_t dev;
    164 	int flags, devtype;
    165 	struct proc *p;
    166 {
    167 	struct grf_softc *gp;
    168 
    169 	if (GRFUNIT(dev) >= NGRF)
    170 		return(ENXIO);
    171 
    172 	gp = grfsp[GRFUNIT(dev)];
    173 	if (gp == NULL)
    174 		return(ENXIO);
    175 
    176 	if ((gp->g_flags & GF_ALIVE) == 0)
    177 		return(ENXIO);
    178 
    179 	if ((gp->g_flags & (GF_OPEN|GF_EXCLUDE)) == (GF_OPEN|GF_EXCLUDE))
    180 		return(EBUSY);
    181 	grf_viewsync(gp);
    182 
    183 	return(0);
    184 }
    185 
    186 /*ARGSUSED*/
    187 int
    188 grfclose(dev, flags, mode, p)
    189 	dev_t		dev;
    190 	int		flags;
    191 	int		mode;
    192 	struct proc	*p;
    193 {
    194 	struct grf_softc *gp;
    195 
    196 	gp = grfsp[GRFUNIT(dev)];
    197 	(void)grfoff(dev);
    198 	gp->g_flags &= GF_ALIVE;
    199 	return(0);
    200 }
    201 
    202 /*ARGSUSED*/
    203 int
    204 grfioctl(dev, cmd, data, flag, p)
    205 dev_t		dev;
    206 u_long		cmd;
    207 int		flag;
    208 caddr_t		data;
    209 struct proc	*p;
    210 {
    211 	struct grf_softc	*gp;
    212 	int			error;
    213 
    214 	gp = grfsp[GRFUNIT(dev)];
    215 	error = 0;
    216 
    217 	switch (cmd) {
    218 	case OGRFIOCGINFO:
    219 	        /* argl.. no bank-member.. */
    220 	  	bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo)-4);
    221 		break;
    222 	case GRFIOCGINFO:
    223 		bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo));
    224 		break;
    225 	case GRFIOCON:
    226 		error = grfon(dev);
    227 		break;
    228 	case GRFIOCOFF:
    229 		error = grfoff(dev);
    230 		break;
    231 	case GRFIOCSINFO:
    232 		error = grfsinfo(dev, (struct grfdyninfo *) data);
    233 		break;
    234 	case GRFGETVMODE:
    235 		return(gp->g_mode(gp, GM_GRFGETVMODE, data, 0, 0));
    236 	case GRFSETVMODE:
    237 		error = gp->g_mode(gp, GM_GRFSETVMODE, data, 0, 0);
    238 		if (error == 0 && gp->g_itedev)
    239 			ite_reinit(gp->g_itedev);
    240 		break;
    241 	case GRFGETNUMVM:
    242 		return(gp->g_mode(gp, GM_GRFGETNUMVM, data, 0, 0));
    243 	/*
    244 	 * these are all hardware dependant, and have to be resolved
    245 	 * in the respective driver.
    246 	 */
    247 	case GRFIOCPUTCMAP:
    248 	case GRFIOCGETCMAP:
    249 	case GRFIOCSSPRITEPOS:
    250 	case GRFIOCGSPRITEPOS:
    251 	case GRFIOCSSPRITEINF:
    252 	case GRFIOCGSPRITEINF:
    253 	case GRFIOCGSPRITEMAX:
    254 	default:
    255 		/*
    256 		 * check to see whether it's a command recognized by the
    257 		 * view code.
    258 		 */
    259 		return(viewioctl(gp->g_viewdev, cmd, data, flag, p));
    260 		error = EINVAL;
    261 		break;
    262 
    263 	}
    264 	return(error);
    265 }
    266 
    267 /*ARGSUSED*/
    268 int
    269 grfpoll(dev, events, p)
    270 	dev_t		dev;
    271 	int		events;
    272 	struct proc	*p;
    273 {
    274 	int revents = 0;
    275 
    276 	if (events & (POLLOUT | POLLWRNORM))
    277 		revents |= events & (POLLOUT | POLLWRNORM);
    278 	return (revents);
    279 }
    280 
    281 /*
    282  * map the contents of a graphics display card into process'
    283  * memory space.
    284  */
    285 int
    286 grfmmap(dev, off, prot)
    287 dev_t	dev;
    288 int	off, prot;
    289 {
    290 	struct grf_softc	*gp;
    291 	struct grfinfo		*gi;
    292 
    293 	gp = grfsp[GRFUNIT(dev)];
    294 	gi = &gp->g_display;
    295 
    296 	/*
    297 	 * control registers
    298 	 */
    299 	if (off >= 0 && off < gi->gd_regsize)
    300 		return(((u_int)gi->gd_regaddr + off) >> PGSHIFT);
    301 
    302 	/*
    303 	 * frame buffer
    304 	 */
    305 	if ((off >= 0) && (off < gi->gd_fbsize))
    306 		return (((u_int)gi->gd_fbaddr + off) >> PGSHIFT);
    307 	return(-1);
    308 }
    309 
    310 int
    311 grfon(dev)
    312 	dev_t dev;
    313 {
    314 	struct grf_softc *gp;
    315 
    316 	gp = grfsp[GRFUNIT(dev)];
    317 
    318 	if (gp->g_flags & GF_GRFON)
    319 		return(0);
    320 
    321 	gp->g_flags |= GF_GRFON;
    322 	if (gp->g_itedev != NODEV)
    323 		ite_off(gp->g_itedev, 3);
    324 
    325 	return(gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVON : GM_GRFON,
    326 							NULL, 0, 0));
    327 }
    328 
    329 int
    330 grfoff(dev)
    331 	dev_t dev;
    332 {
    333 	struct grf_softc *gp;
    334 	int error;
    335 
    336 	gp = grfsp[GRFUNIT(dev)];
    337 
    338 	if ((gp->g_flags & GF_GRFON) == 0)
    339 		return(0);
    340 
    341 	gp->g_flags &= ~GF_GRFON;
    342 	error = gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF,
    343 						NULL, 0, 0);
    344 
    345 	/*
    346 	 * Closely tied together no X's
    347 	 */
    348 	if (gp->g_itedev != NODEV)
    349 		ite_on(gp->g_itedev, 2);
    350 
    351 	return(error);
    352 }
    353 
    354 int
    355 grfsinfo(dev, dyninfo)
    356 	dev_t dev;
    357 	struct grfdyninfo *dyninfo;
    358 {
    359 	struct grf_softc *gp;
    360 	int error;
    361 
    362 	gp = grfsp[GRFUNIT(dev)];
    363 	error = gp->g_mode(gp, GM_GRFCONFIG, dyninfo, 0, 0);
    364 
    365 	/*
    366 	 * Closely tied together no X's
    367 	 */
    368 	if (gp->g_itedev != NODEV)
    369 		ite_reinit(gp->g_itedev);
    370 	return(error);
    371 }
    372 
    373 /*
    374  * Get the grf-info in sync with underlying view.
    375  */
    376 void
    377 grf_viewsync(gp)
    378 struct grf_softc *gp;
    379 {
    380 	struct view_size	vs;
    381 	bmap_t			bm;
    382 	struct grfinfo		*gi;
    383 
    384 	gi = &gp->g_display;
    385 
    386 	viewioctl(gp->g_viewdev, VIOCGBMAP, (caddr_t)&bm, 0, NOPROC);
    387 
    388 	gp->g_data = (caddr_t) 0xDeadBeaf; /* not particularly clean.. */
    389 
    390 	gi->gd_fbaddr  = bm.hw_address;
    391 	gi->gd_fbsize  = bm.phys_mappable;
    392 	gi->gd_regaddr = bm.hw_regs;
    393 	gi->gd_regsize = bm.reg_size;
    394 
    395 	if(viewioctl(gp->g_viewdev, VIOCGSIZE, (caddr_t)&vs, 0, NOPROC)) {
    396 		/*
    397 		 * fill in some default values...
    398 		 * XXX: Should _never_ happen
    399 		 */
    400 		vs.width  = 640;
    401 		vs.height = 400;
    402 		vs.depth  = 1;
    403 	}
    404 	gi->gd_colors = 1 << vs.depth;
    405 	gi->gd_planes = vs.depth;
    406 
    407 	gi->gd_fbwidth         = vs.width;
    408 	gi->gd_fbheight        = vs.height;
    409 	gi->gd_dyn.gdi_fbx     = 0;
    410 	gi->gd_dyn.gdi_fby     = 0;
    411 	gi->gd_dyn.gdi_dwidth  = vs.width;
    412 	gi->gd_dyn.gdi_dheight = vs.height;
    413 	gi->gd_dyn.gdi_dx      = 0;
    414 	gi->gd_dyn.gdi_dy      = 0;
    415 }
    416 
    417 /*
    418  * Change the mode of the display.
    419  * Right now all we can do is grfon/grfoff.
    420  * Return a UNIX error number or 0 for success.
    421  */
    422 /*ARGSUSED*/
    423 int
    424 grf_mode(gp, cmd, arg, a2, a3)
    425 struct grf_softc	*gp;
    426 int			cmd, a2, a3;
    427 void			*arg;
    428 {
    429 	switch (cmd) {
    430 		case GM_GRFON:
    431 			/*
    432 			 * Get in sync with view, ite might have changed it.
    433 			 */
    434 			grf_viewsync(gp);
    435 			viewioctl(gp->g_viewdev, VIOCDISPLAY, NULL, 0, NOPROC);
    436 			return(0);
    437 	case GM_GRFOFF:
    438 			viewioctl(gp->g_viewdev, VIOCREMOVE, NULL, 0, NOPROC);
    439 			return(0);
    440 	case GM_GRFCONFIG:
    441 	default:
    442 			break;
    443 	}
    444 	return(EINVAL);
    445 }
    446 #endif	/* NGRF > 0 */
    447