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grf.c revision 1.39 
      1 /*	$NetBSD: grf.c,v 1.39 2002/01/26 13:40:54 aymeric Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1988 University of Utah.
      5  * Copyright (c) 1990 The Regents of the University of California.
      6  * All rights reserved.
      7  *
      8  * This code is derived from software contributed to Berkeley by
      9  * the Systems Programming Group of the University of Utah Computer
     10  * Science Department.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. All advertising materials mentioning features or use of this software
     21  *    must display the following acknowledgement:
     22  *	This product includes software developed by the University of
     23  *	California, Berkeley and its contributors.
     24  * 4. Neither the name of the University nor the names of its contributors
     25  *    may be used to endorse or promote products derived from this software
     26  *    without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  * SUCH DAMAGE.
     39  *
     40  * from: Utah $Hdr: grf.c 1.31 91/01/21$
     41  *
     42  *	@(#)grf.c	7.8 (Berkeley) 5/7/91
     43  */
     44 
     45 /*
     46  * Graphics display driver for the Amiga
     47  * This is the hardware-independent portion of the driver.
     48  * Hardware access is through the grf_softc->g_mode routine.
     49  */
     50 
     51 #include <sys/param.h>
     52 #include <sys/proc.h>
     53 #include <sys/ioctl.h>
     54 #include <sys/device.h>
     55 #include <sys/file.h>
     56 #include <sys/malloc.h>
     57 #include <sys/systm.h>
     58 #include <sys/vnode.h>
     59 #include <sys/mman.h>
     60 #include <sys/poll.h>
     61 #include <uvm/uvm_extern.h>
     62 #include <machine/cpu.h>
     63 #include <dev/sun/fbio.h>
     64 #include <amiga/amiga/color.h>	/* DEBUG */
     65 #include <amiga/amiga/device.h>
     66 #include <amiga/dev/grfioctl.h>
     67 #include <amiga/dev/grfvar.h>
     68 #include <amiga/dev/itevar.h>
     69 #include <amiga/dev/viewioctl.h>
     70 
     71 #include <sys/conf.h>
     72 #include <machine/conf.h>
     73 
     74 #include "view.h"
     75 #include "grf.h"
     76 
     77 #if NGRF > 0
     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 grfon(dev_t);
     86 int grfoff(dev_t);
     87 int grfsinfo(dev_t, struct grfdyninfo *);
     88 #ifdef BANKEDDEVPAGER
     89 int grfbanked_get(dev_t, off_t, int);
     90 int grfbanked_cur(dev_t);
     91 int grfbanked_set(dev_t, int);
     92 #endif
     93 
     94 void grfattach(struct device *, struct device *, void *);
     95 int grfmatch(struct device *, struct cfdata *, void *);
     96 int grfprint(void *, const char *);
     97 /*
     98  * pointers to grf drivers device structs
     99  */
    100 struct grf_softc *grfsp[NGRF];
    101 
    102 struct cfattach grf_ca = {
    103 	sizeof(struct device), grfmatch, grfattach
    104 };
    105 
    106 /*
    107  * only used in console init.
    108  */
    109 static struct cfdata *cfdata;
    110 
    111 /*
    112  * match if the unit of grf matches its perspective
    113  * low level board driver.
    114  */
    115 int
    116 grfmatch(struct device *pdp, struct cfdata *cfp, void *auxp)
    117 {
    118 
    119 	if (cfp->cf_unit != ((struct grf_softc *)pdp)->g_unit)
    120 		return(0);
    121 	cfdata = cfp;
    122 	return(1);
    123 }
    124 
    125 /*
    126  * attach.. plug pointer in and print some info.
    127  * then try and attach an ite to us. note: dp is NULL
    128  * durring console init.
    129  */
    130 void
    131 grfattach(struct device *pdp, struct device *dp, void *auxp)
    132 {
    133 	struct grf_softc *gp;
    134 	int maj;
    135 
    136 	gp = (struct grf_softc *)pdp;
    137 	grfsp[gp->g_unit] = (struct grf_softc *)pdp;
    138 
    139 	/*
    140 	 * find our major device number
    141 	 */
    142 	for(maj = 0; maj < nchrdev; maj++)
    143 		if (cdevsw[maj].d_open == grfopen)
    144 			break;
    145 
    146 	gp->g_grfdev = makedev(maj, gp->g_unit);
    147 	if (dp != NULL) {
    148 		printf(": width %d height %d", gp->g_display.gd_dwidth,
    149 		    gp->g_display.gd_dheight);
    150 		if (gp->g_display.gd_colors == 2)
    151 			printf(" monochrome\n");
    152 		else
    153 			printf(" colors %d\n", gp->g_display.gd_colors);
    154 	}
    155 
    156 	/*
    157 	 * try and attach an ite
    158 	 */
    159 	amiga_config_found(cfdata, dp, gp, grfprint);
    160 }
    161 
    162 int
    163 grfprint(void *auxp, const char *pnp)
    164 {
    165 	if (pnp)
    166 		printf("ite at %s", pnp);
    167 	return(UNCONF);
    168 }
    169 
    170 /*ARGSUSED*/
    171 int
    172 grfopen(dev_t dev, int flags, int devtype, struct proc *p)
    173 {
    174 	struct grf_softc *gp;
    175 
    176 	if (GRFUNIT(dev) >= NGRF || (gp = grfsp[GRFUNIT(dev)]) == NULL)
    177 		return(ENXIO);
    178 
    179 	if ((gp->g_flags & GF_ALIVE) == 0)
    180 		return(ENXIO);
    181 
    182 	if ((gp->g_flags & (GF_OPEN|GF_EXCLUDE)) == (GF_OPEN|GF_EXCLUDE))
    183 		return(EBUSY);
    184 
    185 	return(0);
    186 }
    187 
    188 /*ARGSUSED*/
    189 int
    190 grfclose(dev_t dev, int flags, int mode, struct proc *p)
    191 {
    192 	struct grf_softc *gp;
    193 
    194 	gp = grfsp[GRFUNIT(dev)];
    195 	(void)grfoff(dev);
    196 	gp->g_flags &= GF_ALIVE;
    197 	return(0);
    198 }
    199 
    200 /*ARGSUSED*/
    201 int
    202 grfioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
    203 {
    204 	struct grf_softc *gp;
    205 	int error;
    206 
    207 	gp = grfsp[GRFUNIT(dev)];
    208 	error = 0;
    209 
    210 	switch (cmd) {
    211 	case OGRFIOCGINFO:
    212 	        /* argl.. no bank-member.. */
    213 	  	bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo)-4);
    214 		break;
    215 	case GRFIOCGINFO:
    216 		bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo));
    217 		break;
    218 	case GRFIOCON:
    219 		error = grfon(dev);
    220 		break;
    221 	case GRFIOCOFF:
    222 		error = grfoff(dev);
    223 		break;
    224 	case GRFIOCSINFO:
    225 		error = grfsinfo(dev, (struct grfdyninfo *) data);
    226 		break;
    227 	case GRFGETVMODE:
    228 		return(gp->g_mode(gp, GM_GRFGETVMODE, data, 0, 0));
    229 	case GRFSETVMODE:
    230 		error = gp->g_mode(gp, GM_GRFSETVMODE, data, 0, 0);
    231 		if (error == 0 && gp->g_itedev && !(gp->g_flags & GF_GRFON))
    232 			ite_reinit(gp->g_itedev);
    233 		break;
    234 	case GRFGETNUMVM:
    235 		return(gp->g_mode(gp, GM_GRFGETNUMVM, data, 0, 0));
    236 	/*
    237 	 * these are all hardware dependant, and have to be resolved
    238 	 * in the respective driver.
    239 	 */
    240 	case GRFIOCPUTCMAP:
    241 	case GRFIOCGETCMAP:
    242 	case GRFIOCSSPRITEPOS:
    243 	case GRFIOCGSPRITEPOS:
    244 	case GRFIOCSSPRITEINF:
    245 	case GRFIOCGSPRITEINF:
    246 	case GRFIOCGSPRITEMAX:
    247 	case GRFIOCBITBLT:
    248     	case GRFIOCSETMON:
    249 	case GRFTOGGLE: /* Toggles between Cirrus boards and native ECS on
    250                      Amiga. 15/11/94 ill */
    251 		/*
    252 		 * We need the minor dev number to get the overlay/image
    253 		 * information for grf_ul.
    254 		 */
    255 		return(gp->g_mode(gp, GM_GRFIOCTL, data, cmd, dev));
    256 
    257 	case GRFIOCBLANK:	/* blank ioctl, IOCON/OFF will turn ite on */
    258 	case FBIOSVIDEO:
    259 		error = gp->g_mode(gp, GM_GRFIOCTL, data, GRFIOCBLANK, dev);
    260 		if (!error)
    261 			gp->g_blank = *(int *)data;
    262 		return (error);
    263 
    264 	case FBIOGVIDEO:
    265 		*(int *)data = gp->g_blank;
    266 		return (0);
    267 
    268 	default:
    269 #if NVIEW > 0
    270 		/*
    271 		 * check to see whether it's a command recognized by the
    272 		 * view code if the unit is 0
    273 		 * XXX
    274 		 */
    275 		if (GRFUNIT(dev) == 0)
    276 			return(viewioctl(dev, cmd, data, flag, p));
    277 #endif
    278 		error = EINVAL;
    279 		break;
    280 
    281 	}
    282 	return(error);
    283 }
    284 
    285 /*ARGSUSED*/
    286 int
    287 grfpoll(dev_t dev, int events, struct proc *p)
    288 {
    289 	return(events & (POLLOUT | POLLWRNORM));
    290 }
    291 
    292 /*
    293  * map the contents of a graphics display card into process'
    294  * memory space.
    295  */
    296 paddr_t
    297 grfmmap(dev_t dev, off_t off, int prot)
    298 {
    299 	struct grf_softc *gp;
    300 	struct grfinfo *gi;
    301 
    302 	gp = grfsp[GRFUNIT(dev)];
    303 	gi = &gp->g_display;
    304 
    305 	/*
    306 	 * control registers
    307 	 */
    308 	if (off >= 0 && off < gi->gd_regsize)
    309 		return(((paddr_t)gi->gd_regaddr + off) >> PGSHIFT);
    310 
    311 	/*
    312 	 * frame buffer
    313 	 */
    314 	if (off >= gi->gd_regsize && off < gi->gd_regsize+gi->gd_fbsize) {
    315 		off -= gi->gd_regsize;
    316 #ifdef BANKEDDEVPAGER
    317 		if (gi->gd_bank_size)
    318 			off %= gi->gd_bank_size;
    319 #endif
    320 		return(((paddr_t)gi->gd_fbaddr + off) >> PGSHIFT);
    321 	}
    322 	/* bogus */
    323 	return(-1);
    324 }
    325 
    326 int
    327 grfon(dev_t dev)
    328 {
    329 	struct grf_softc *gp;
    330 
    331 	gp = grfsp[GRFUNIT(dev)];
    332 
    333 	if (gp->g_flags & GF_GRFON)
    334 		return(0);
    335 
    336 	gp->g_flags |= GF_GRFON;
    337 	if (gp->g_itedev != NODEV)
    338 		ite_off(gp->g_itedev, 3);
    339 
    340 	return(gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVON : GM_GRFON,
    341 							NULL, 0, 0));
    342 }
    343 
    344 int
    345 grfoff(dev_t dev)
    346 {
    347 	struct grf_softc *gp;
    348 	int error;
    349 
    350 	gp = grfsp[GRFUNIT(dev)];
    351 
    352 	if ((gp->g_flags & GF_GRFON) == 0)
    353 		return(0);
    354 
    355 	gp->g_flags &= ~GF_GRFON;
    356 	error = gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF,
    357 							NULL, 0, 0);
    358 
    359 	/*
    360 	 * Closely tied together no X's
    361 	 */
    362 	if (gp->g_itedev != NODEV)
    363 		ite_on(gp->g_itedev, 2);
    364 
    365 	return(error);
    366 }
    367 
    368 int
    369 grfsinfo(dev_t dev, struct grfdyninfo *dyninfo)
    370 {
    371 	struct grf_softc *gp;
    372 	int error;
    373 
    374 	gp = grfsp[GRFUNIT(dev)];
    375 	error = gp->g_mode(gp, GM_GRFCONFIG, dyninfo, 0, 0);
    376 
    377 	/*
    378 	 * Closely tied together no X's
    379 	 */
    380 	if (gp->g_itedev != NODEV)
    381 		ite_reinit(gp->g_itedev);
    382 	return(error);
    383 }
    384 
    385 #ifdef BANKEDDEVPAGER
    386 
    387 int
    388 grfbanked_get(dev_t dev, off_t off, int prot)
    389 {
    390 	struct grf_softc *gp;
    391 	struct grfinfo *gi;
    392 	int error, bank;
    393 
    394 	gp = grfsp[GRFUNIT(dev)];
    395 	gi = &gp->g_display;
    396 
    397 	off -= gi->gd_regsize;
    398 	if (off < 0 || off >= gi->gd_fbsize)
    399 		return -1;
    400 
    401 	error = gp->g_mode(gp, GM_GRFGETBANK, &bank, off, prot);
    402 	return error ? -1 : bank;
    403 }
    404 
    405 int
    406 grfbanked_cur(dev_t dev)
    407 {
    408 	struct grf_softc *gp;
    409 	int error, bank;
    410 
    411 	gp = grfsp[GRFUNIT(dev)];
    412 
    413 	error = gp->g_mode(gp, GM_GRFGETCURBANK, &bank, 0, 0);
    414 	return(error ? -1 : bank);
    415 }
    416 
    417 int
    418 grfbanked_set(dev_t dev, int bank)
    419 {
    420 	struct grf_softc *gp;
    421 
    422 	gp = grfsp[GRFUNIT(dev)];
    423 	return(gp->g_mode(gp, GM_GRFSETBANK, &bank, 0, 0) ? -1 : 0);
    424 }
    425 
    426 #endif /* BANKEDDEVPAGER */
    427 #endif	/* NGRF > 0 */
    428