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grf.c revision 1.32 
      1 /*	$NetBSD: grf.c,v 1.32 2003/07/15 01:19:49 lukem 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/cdefs.h>
     53 __KERNEL_RCSID(0, "$NetBSD: grf.c,v 1.32 2003/07/15 01:19:49 lukem Exp $");
     54 
     55 #include <sys/param.h>
     56 #include <sys/proc.h>
     57 #include <sys/ioctl.h>
     58 #include <sys/device.h>
     59 #include <sys/file.h>
     60 #include <sys/malloc.h>
     61 #include <sys/conf.h>
     62 #include <sys/systm.h>
     63 #include <sys/vnode.h>
     64 #include <sys/mman.h>
     65 
     66 #include <machine/cpu.h>
     67 
     68 #include <uvm/uvm_extern.h>
     69 
     70 #include <atari/atari/device.h>
     71 #include <atari/dev/grfioctl.h>
     72 #include <atari/dev/grfabs_reg.h>
     73 #include <atari/dev/grfvar.h>
     74 #include <atari/dev/itevar.h>
     75 #include <atari/dev/viewioctl.h>
     76 #include <atari/dev/viewvar.h>
     77 
     78 #include "grfcc.h"
     79 #include "grfet.h"
     80 #define	NGRF	(NGRFCC + NGRFET)
     81 
     82 #if NGRF > 0
     83 
     84 #include "ite.h"
     85 #if NITE == 0
     86 #define	ite_on(u,f)
     87 #define	ite_off(u,f)
     88 #define ite_reinit(d)
     89 #endif
     90 
     91 int grfon __P((dev_t));
     92 int grfoff __P((dev_t));
     93 int grfsinfo __P((dev_t, struct grfdyninfo *));
     94 
     95 int grfbusprint __P((void *auxp, const char *));
     96 int grfbusmatch __P((struct device *, struct cfdata *, void *));
     97 void grfbusattach __P((struct device *, struct device *, void *));
     98 
     99 /*
    100  * pointers to grf drivers device structs
    101  */
    102 struct grf_softc *grfsp[NGRF]; /* XXX */
    103 
    104 CFATTACH_DECL(grfbus, sizeof(struct device),
    105     grfbusmatch, grfbusattach, NULL, NULL);
    106 
    107 extern struct cfdriver grfbus_cd;
    108 
    109 dev_type_open(grfopen);
    110 dev_type_close(grfclose);
    111 dev_type_ioctl(grfioctl);
    112 dev_type_mmap(grfmmap);
    113 
    114 const struct cdevsw grf_cdevsw = {
    115 	grfopen, grfclose, noread, nowrite, grfioctl,
    116 	nostop, notty, nopoll, grfmmap, nokqfilter,
    117 };
    118 
    119 /*
    120  * only used in console init.
    121  */
    122 static struct cfdata *cfdata_gbus  = NULL;
    123 
    124 int
    125 grfbusmatch(pdp, cfp, auxp)
    126 struct device	*pdp;
    127 struct cfdata	*cfp;
    128 void		*auxp;
    129 {
    130 	if(strcmp(auxp, grfbus_cd.cd_name))
    131 		return(0);
    132 
    133 	if(atari_realconfig == 0)
    134 		cfdata_gbus = cfp;
    135 	return(1);	/* Always there	*/
    136 }
    137 
    138 void
    139 grfbusattach(pdp, dp, auxp)
    140 struct device	*pdp, *dp;
    141 void		*auxp;
    142 {
    143     grf_auxp_t	grf_auxp;
    144 
    145     grf_auxp.busprint       = grfbusprint;
    146     grf_auxp.from_bus_match = 1;
    147 
    148     if(dp == NULL) /* Console init	*/
    149 	atari_config_found(cfdata_gbus, NULL, (void*)&grf_auxp, grfbusprint);
    150     else {
    151 	printf("\n");
    152 	config_found(dp, (void*)&grf_auxp, grfbusprint);
    153     }
    154 }
    155 
    156 int
    157 grfbusprint(auxp, name)
    158 void		*auxp;
    159 const char	*name;
    160 {
    161 	if(name == NULL)
    162 		return(UNCONF);
    163 	return(QUIET);
    164 }
    165 
    166 /*ARGSUSED*/
    167 int
    168 grfopen(dev, flags, devtype, p)
    169 	dev_t dev;
    170 	int flags, devtype;
    171 	struct proc *p;
    172 {
    173 	struct grf_softc *gp;
    174 
    175 	if (GRFUNIT(dev) >= NGRF)
    176 		return(ENXIO);
    177 
    178 	gp = grfsp[GRFUNIT(dev)];
    179 	if (gp == NULL)
    180 		return(ENXIO);
    181 
    182 	if ((gp->g_flags & GF_ALIVE) == 0)
    183 		return(ENXIO);
    184 
    185 	if ((gp->g_flags & (GF_OPEN|GF_EXCLUDE)) == (GF_OPEN|GF_EXCLUDE))
    186 		return(EBUSY);
    187 	grf_viewsync(gp);
    188 
    189 	return(0);
    190 }
    191 
    192 /*ARGSUSED*/
    193 int
    194 grfclose(dev, flags, mode, p)
    195 	dev_t		dev;
    196 	int		flags;
    197 	int		mode;
    198 	struct proc	*p;
    199 {
    200 	struct grf_softc *gp;
    201 
    202 	gp = grfsp[GRFUNIT(dev)];
    203 	(void)grfoff(dev);
    204 	gp->g_flags &= GF_ALIVE;
    205 	return(0);
    206 }
    207 
    208 /*ARGSUSED*/
    209 int
    210 grfioctl(dev, cmd, data, flag, p)
    211 dev_t		dev;
    212 u_long		cmd;
    213 int		flag;
    214 caddr_t		data;
    215 struct proc	*p;
    216 {
    217 	struct grf_softc	*gp;
    218 	int			error;
    219 	extern const struct cdevsw view_cdevsw;
    220 
    221 	gp = grfsp[GRFUNIT(dev)];
    222 	error = 0;
    223 
    224 	switch (cmd) {
    225 	case OGRFIOCGINFO:
    226 	        /* argl.. no bank-member.. */
    227 	  	bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo)-4);
    228 		break;
    229 	case GRFIOCGINFO:
    230 		bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo));
    231 		break;
    232 	case GRFIOCON:
    233 		error = grfon(dev);
    234 		break;
    235 	case GRFIOCOFF:
    236 		error = grfoff(dev);
    237 		break;
    238 	case GRFIOCSINFO:
    239 		error = grfsinfo(dev, (struct grfdyninfo *) data);
    240 		break;
    241 	case GRFGETVMODE:
    242 		return(gp->g_mode(gp, GM_GRFGETVMODE, data, 0, 0));
    243 	case GRFSETVMODE:
    244 		error = gp->g_mode(gp, GM_GRFSETVMODE, data, 0, 0);
    245 		if (error == 0 && gp->g_itedev)
    246 			ite_reinit(gp->g_itedev);
    247 		break;
    248 	case GRFGETNUMVM:
    249 		return(gp->g_mode(gp, GM_GRFGETNUMVM, data, 0, 0));
    250 	/*
    251 	 * these are all hardware dependant, and have to be resolved
    252 	 * in the respective driver.
    253 	 */
    254 	case GRFIOCPUTCMAP:
    255 	case GRFIOCGETCMAP:
    256 	case GRFIOCSSPRITEPOS:
    257 	case GRFIOCGSPRITEPOS:
    258 	case GRFIOCSSPRITEINF:
    259 	case GRFIOCGSPRITEINF:
    260 	case GRFIOCGSPRITEMAX:
    261 	default:
    262 		/*
    263 		 * check to see whether it's a command recognized by the
    264 		 * view code.
    265 		 */
    266 		return((*view_cdevsw.d_ioctl)(gp->g_viewdev, cmd, data, flag,
    267 					      p));
    268 		error = EINVAL;
    269 		break;
    270 
    271 	}
    272 	return(error);
    273 }
    274 
    275 /*
    276  * map the contents of a graphics display card into process'
    277  * memory space.
    278  */
    279 paddr_t
    280 grfmmap(dev, off, prot)
    281 	dev_t	dev;
    282 	off_t	off;
    283 	int	prot;
    284 {
    285 	struct grf_softc	*gp;
    286 	struct grfinfo		*gi;
    287 	u_int			vgabase, linbase;
    288 
    289 	gp = grfsp[GRFUNIT(dev)];
    290 	gi = &gp->g_display;
    291 
    292 	vgabase = gi->gd_vgabase;
    293 	linbase = gi->gd_linbase;
    294 
    295 	/*
    296 	 * control registers
    297 	 */
    298 	if (off >= 0 && off < gi->gd_regsize)
    299 		return(((paddr_t)gi->gd_regaddr + off) >> PGSHIFT);
    300 
    301 	/*
    302 	 * VGA memory
    303 	 */
    304 	if (off >= vgabase && off < (vgabase + gi->gd_vgasize))
    305 		return(((paddr_t)gi->gd_vgaaddr - vgabase + off) >> PGSHIFT);
    306 
    307 	/*
    308 	 * frame buffer
    309 	 */
    310 	if (off >= linbase && off < (linbase + gi->gd_fbsize))
    311 		return(((paddr_t)gi->gd_fbaddr - linbase + off) >> PGSHIFT);
    312 	return(-1);
    313 }
    314 
    315 int
    316 grfon(dev)
    317 	dev_t dev;
    318 {
    319 	struct grf_softc *gp;
    320 
    321 	gp = grfsp[GRFUNIT(dev)];
    322 
    323 	if (gp->g_flags & GF_GRFON)
    324 		return(0);
    325 
    326 	gp->g_flags |= GF_GRFON;
    327 	if (gp->g_itedev != NODEV)
    328 		ite_off(gp->g_itedev, 3);
    329 
    330 	return(gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVON : GM_GRFON,
    331 							NULL, 0, 0));
    332 }
    333 
    334 int
    335 grfoff(dev)
    336 	dev_t dev;
    337 {
    338 	struct grf_softc *gp;
    339 	int error;
    340 
    341 	gp = grfsp[GRFUNIT(dev)];
    342 
    343 	if ((gp->g_flags & GF_GRFON) == 0)
    344 		return(0);
    345 
    346 	gp->g_flags &= ~GF_GRFON;
    347 	error = gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF,
    348 						NULL, 0, 0);
    349 
    350 	/*
    351 	 * Closely tied together no X's
    352 	 */
    353 	if (gp->g_itedev != NODEV)
    354 		ite_on(gp->g_itedev, 2);
    355 
    356 	return(error);
    357 }
    358 
    359 int
    360 grfsinfo(dev, dyninfo)
    361 	dev_t dev;
    362 	struct grfdyninfo *dyninfo;
    363 {
    364 	struct grf_softc *gp;
    365 	int error;
    366 
    367 	gp = grfsp[GRFUNIT(dev)];
    368 	error = gp->g_mode(gp, GM_GRFCONFIG, dyninfo, 0, 0);
    369 
    370 	/*
    371 	 * Closely tied together no X's
    372 	 */
    373 	if (gp->g_itedev != NODEV)
    374 		ite_reinit(gp->g_itedev);
    375 	return(error);
    376 }
    377 
    378 /*
    379  * Get the grf-info in sync with underlying view.
    380  */
    381 void
    382 grf_viewsync(gp)
    383 struct grf_softc *gp;
    384 {
    385 	struct view_size	vs;
    386 	bmap_t			bm;
    387 	struct grfinfo		*gi;
    388 	extern const struct cdevsw view_cdevsw;
    389 
    390 	gi = &gp->g_display;
    391 
    392 	(*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCGBMAP, (caddr_t)&bm,
    393 			       0, NOPROC);
    394 
    395 	gp->g_data = (caddr_t) 0xDeadBeaf; /* not particularly clean.. */
    396 
    397 	gi->gd_fbaddr  = bm.hw_address;
    398 	gi->gd_fbsize  = bm.phys_mappable;
    399 	gi->gd_linbase = bm.lin_base;
    400 	gi->gd_regaddr = bm.hw_regs;
    401 	gi->gd_regsize = bm.reg_size;
    402 	gi->gd_vgaaddr = bm.vga_address;
    403 	gi->gd_vgasize = bm.vga_mappable;
    404 	gi->gd_vgabase = bm.vga_base;
    405 
    406 	if((*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCGSIZE, (caddr_t)&vs, 0,
    407 				  NOPROC)) {
    408 		/*
    409 		 * fill in some default values...
    410 		 * XXX: Should _never_ happen
    411 		 */
    412 		vs.width  = 640;
    413 		vs.height = 400;
    414 		vs.depth  = 1;
    415 	}
    416 	gi->gd_colors = 1 << vs.depth;
    417 	gi->gd_planes = vs.depth;
    418 
    419 	gi->gd_fbwidth         = vs.width;
    420 	gi->gd_fbheight        = vs.height;
    421 	gi->gd_dyn.gdi_fbx     = 0;
    422 	gi->gd_dyn.gdi_fby     = 0;
    423 	gi->gd_dyn.gdi_dwidth  = vs.width;
    424 	gi->gd_dyn.gdi_dheight = vs.height;
    425 	gi->gd_dyn.gdi_dx      = 0;
    426 	gi->gd_dyn.gdi_dy      = 0;
    427 }
    428 
    429 /*
    430  * Change the mode of the display.
    431  * Right now all we can do is grfon/grfoff.
    432  * Return a UNIX error number or 0 for success.
    433  */
    434 /*ARGSUSED*/
    435 int
    436 grf_mode(gp, cmd, arg, a2, a3)
    437 struct grf_softc	*gp;
    438 int			cmd, a2, a3;
    439 void			*arg;
    440 {
    441 	extern const struct cdevsw view_cdevsw;
    442 
    443 	switch (cmd) {
    444 		case GM_GRFON:
    445 			/*
    446 			 * Get in sync with view, ite might have changed it.
    447 			 */
    448 			grf_viewsync(gp);
    449 			(*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCDISPLAY,
    450 					       NULL, 0, NOPROC);
    451 			return(0);
    452 	case GM_GRFOFF:
    453 			(*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCREMOVE,
    454 					       NULL, 0, NOPROC);
    455 			return(0);
    456 	case GM_GRFCONFIG:
    457 	default:
    458 			break;
    459 	}
    460 	return(EPASSTHROUGH);
    461 }
    462 #endif	/* NGRF > 0 */
    463