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grf.c revision 1.47 
      1 /*	$NetBSD: grf.c,v 1.47 2011/06/30 20:09:21 wiz 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. Neither the name of the University nor the names of its contributors
     22  *    may be used to endorse or promote products derived from this software
     23  *    without specific prior written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     35  * SUCH DAMAGE.
     36  *
     37  * from: Utah $Hdr: grf.c 1.31 91/01/21$
     38  *
     39  *	@(#)grf.c	7.8 (Berkeley) 5/7/91
     40  */
     41 
     42 /*
     43  * Graphics display driver for the Atari
     44  * This is the hardware-independent portion of the driver.
     45  * Hardware access is through the grf_softc->g_mode routine.
     46  */
     47 
     48 #include <sys/cdefs.h>
     49 __KERNEL_RCSID(0, "$NetBSD: grf.c,v 1.47 2011/06/30 20:09:21 wiz Exp $");
     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/conf.h>
     58 #include <sys/systm.h>
     59 #include <sys/vnode.h>
     60 #include <sys/mman.h>
     61 
     62 #include <machine/cpu.h>
     63 
     64 #include <uvm/uvm_extern.h>
     65 
     66 #include <atari/atari/device.h>
     67 #include <atari/dev/grfioctl.h>
     68 #include <atari/dev/grfabs_reg.h>
     69 #include <atari/dev/grfvar.h>
     70 #include <atari/dev/itevar.h>
     71 #include <atari/dev/viewioctl.h>
     72 #include <atari/dev/viewvar.h>
     73 
     74 #include "ioconf.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(dev_t);
     90 int grfoff(dev_t);
     91 int grfsinfo(dev_t, struct grfdyninfo *);
     92 
     93 int grfbusprint(void *, const char *);
     94 int grfbusmatch(device_t, cfdata_t, void *);
     95 void grfbusattach(device_t, device_t, void *);
     96 
     97 /*
     98  * pointers to grf drivers device structs
     99  */
    100 struct grf_softc *grfsp[NGRF]; /* XXX */
    101 
    102 CFATTACH_DECL_NEW(grfbus, 0,
    103     grfbusmatch, grfbusattach, NULL, NULL);
    104 
    105 dev_type_open(grfopen);
    106 dev_type_close(grfclose);
    107 dev_type_ioctl(grfioctl);
    108 dev_type_mmap(grfmmap);
    109 
    110 const struct cdevsw grf_cdevsw = {
    111 	grfopen, grfclose, noread, nowrite, grfioctl,
    112 	nostop, notty, nopoll, grfmmap, nokqfilter,
    113 };
    114 
    115 /*
    116  * only used in console init.
    117  */
    118 static cfdata_t cfdata_gbus  = NULL;
    119 
    120 int
    121 grfbusmatch(device_t parent, cfdata_t cf, void *aux)
    122 {
    123 
    124 	if (strcmp(aux, grfbus_cd.cd_name))
    125 		return 0;
    126 
    127 	if (atari_realconfig == 0)
    128 		cfdata_gbus = cf;
    129 	return 1;	/* Always there	*/
    130 }
    131 
    132 void
    133 grfbusattach(device_t parent, device_t self, void *aux)
    134 {
    135 	grf_auxp_t	grf_auxp;
    136 
    137 	grf_auxp.busprint       = grfbusprint;
    138 	grf_auxp.from_bus_match = 1;
    139 
    140 	if (self == NULL) /* Console init	*/
    141 		atari_config_found(cfdata_gbus, NULL, &grf_auxp, grfbusprint);
    142 	else {
    143 		printf("\n");
    144 		config_found(self, &grf_auxp, grfbusprint);
    145 	}
    146 }
    147 
    148 int
    149 grfbusprint(void *aux, const char *name)
    150 {
    151 
    152 	if (name == NULL)
    153 		return UNCONF;
    154 	return QUIET;
    155 }
    156 
    157 /*ARGSUSED*/
    158 int
    159 grfopen(dev_t dev, int flags, int devtype, struct lwp *l)
    160 {
    161 	struct grf_softc *gp;
    162 
    163 	if (GRFUNIT(dev) >= NGRF)
    164 		return ENXIO;
    165 
    166 	gp = grfsp[GRFUNIT(dev)];
    167 	if (gp == NULL)
    168 		return ENXIO;
    169 
    170 	if ((gp->g_flags & GF_ALIVE) == 0)
    171 		return ENXIO;
    172 
    173 	if ((gp->g_flags & (GF_OPEN|GF_EXCLUDE)) == (GF_OPEN|GF_EXCLUDE))
    174 		return EBUSY;
    175 	grf_viewsync(gp);
    176 
    177 	return 0;
    178 }
    179 
    180 /*ARGSUSED*/
    181 int
    182 grfclose(dev_t dev, int flags, int mode, struct lwp *l)
    183 {
    184 	struct grf_softc *gp;
    185 
    186 	gp = grfsp[GRFUNIT(dev)];
    187 	(void)grfoff(dev);
    188 	gp->g_flags &= GF_ALIVE;
    189 	return 0;
    190 }
    191 
    192 /*ARGSUSED*/
    193 int
    194 grfioctl(dev_t dev, u_long cmd, void * data, int flag, struct lwp *l)
    195 {
    196 	struct grf_softc	*gp;
    197 	int			error;
    198 	extern const struct cdevsw view_cdevsw;
    199 
    200 	gp = grfsp[GRFUNIT(dev)];
    201 	error = 0;
    202 
    203 	switch (cmd) {
    204 	case OGRFIOCGINFO:
    205 	        /* argl.. no bank-member.. */
    206 	  	memcpy(data, (void *)&gp->g_display, sizeof(struct grfinfo)-4);
    207 		break;
    208 	case GRFIOCGINFO:
    209 		memcpy(data, (void *)&gp->g_display, sizeof(struct grfinfo));
    210 		break;
    211 	case GRFIOCON:
    212 		error = grfon(dev);
    213 		break;
    214 	case GRFIOCOFF:
    215 		error = grfoff(dev);
    216 		break;
    217 	case GRFIOCSINFO:
    218 		error = grfsinfo(dev, (struct grfdyninfo *) data);
    219 		break;
    220 	case GRFGETVMODE:
    221 		return gp->g_mode(gp, GM_GRFGETVMODE, data, 0, 0);
    222 	case GRFSETVMODE:
    223 		error = gp->g_mode(gp, GM_GRFSETVMODE, data, 0, 0);
    224 		if (error == 0 && gp->g_itedev)
    225 			ite_reinit(gp->g_itedev);
    226 		break;
    227 	case GRFGETNUMVM:
    228 		return gp->g_mode(gp, GM_GRFGETNUMVM, data, 0, 0);
    229 	/*
    230 	 * these are all hardware dependent, and have to be resolved
    231 	 * in the respective driver.
    232 	 */
    233 	case GRFIOCPUTCMAP:
    234 	case GRFIOCGETCMAP:
    235 	case GRFIOCSSPRITEPOS:
    236 	case GRFIOCGSPRITEPOS:
    237 	case GRFIOCSSPRITEINF:
    238 	case GRFIOCGSPRITEINF:
    239 	case GRFIOCGSPRITEMAX:
    240 	default:
    241 		/*
    242 		 * check to see whether it's a command recognized by the
    243 		 * view code.
    244 		 */
    245 		return (*view_cdevsw.d_ioctl)(gp->g_viewdev,
    246 		    cmd, data, flag, l);
    247 		error = EINVAL;
    248 		break;
    249 
    250 	}
    251 	return error;
    252 }
    253 
    254 /*
    255  * map the contents of a graphics display card into process'
    256  * memory space.
    257  */
    258 paddr_t
    259 grfmmap(dev_t dev, off_t off, int prot)
    260 {
    261 	struct grf_softc	*gp;
    262 	struct grfinfo		*gi;
    263 	u_int			vgabase, linbase;
    264 
    265 	gp = grfsp[GRFUNIT(dev)];
    266 	gi = &gp->g_display;
    267 
    268 	vgabase = gi->gd_vgabase;
    269 	linbase = gi->gd_linbase;
    270 
    271 	/*
    272 	 * control registers
    273 	 */
    274 	if (off >= 0 && off < gi->gd_regsize)
    275 		return ((paddr_t)gi->gd_regaddr + off) >> PGSHIFT;
    276 
    277 	/*
    278 	 * VGA memory
    279 	 */
    280 	if (off >= vgabase && off < (vgabase + gi->gd_vgasize))
    281 		return ((paddr_t)gi->gd_vgaaddr - vgabase + off) >> PGSHIFT;
    282 
    283 	/*
    284 	 * frame buffer
    285 	 */
    286 	if (off >= linbase && off < (linbase + gi->gd_fbsize))
    287 		return ((paddr_t)gi->gd_fbaddr - linbase + off) >> PGSHIFT;
    288 	return -1;
    289 }
    290 
    291 int
    292 grfon(dev_t dev)
    293 {
    294 	struct grf_softc *gp;
    295 
    296 	gp = grfsp[GRFUNIT(dev)];
    297 
    298 	if (gp->g_flags & GF_GRFON)
    299 		return 0;
    300 
    301 	gp->g_flags |= GF_GRFON;
    302 	if (gp->g_itedev != NODEV)
    303 		ite_off(gp->g_itedev, 3);
    304 
    305 	return gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVON : GM_GRFON,
    306 	    NULL, 0, 0);
    307 }
    308 
    309 int
    310 grfoff(dev_t dev)
    311 {
    312 	struct grf_softc *gp;
    313 	int error;
    314 
    315 	gp = grfsp[GRFUNIT(dev)];
    316 
    317 	if ((gp->g_flags & GF_GRFON) == 0)
    318 		return 0;
    319 
    320 	gp->g_flags &= ~GF_GRFON;
    321 	error = gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF,
    322 	    NULL, 0, 0);
    323 
    324 	/*
    325 	 * Closely tied together no X's
    326 	 */
    327 	if (gp->g_itedev != NODEV)
    328 		ite_on(gp->g_itedev, 2);
    329 
    330 	return error;
    331 }
    332 
    333 int
    334 grfsinfo(dev_t dev, struct grfdyninfo *dyninfo)
    335 {
    336 	struct grf_softc *gp;
    337 	int error;
    338 
    339 	gp = grfsp[GRFUNIT(dev)];
    340 	error = gp->g_mode(gp, GM_GRFCONFIG, dyninfo, 0, 0);
    341 
    342 	/*
    343 	 * Closely tied together no X's
    344 	 */
    345 	if (gp->g_itedev != NODEV)
    346 		ite_reinit(gp->g_itedev);
    347 	return error;
    348 }
    349 
    350 /*
    351  * Get the grf-info in sync with underlying view.
    352  */
    353 void
    354 grf_viewsync(struct grf_softc *gp)
    355 {
    356 	struct view_size	vs;
    357 	bmap_t			bm;
    358 	struct grfinfo		*gi;
    359 	extern const struct cdevsw view_cdevsw;
    360 
    361 	gi = &gp->g_display;
    362 
    363 	(*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCGBMAP, (void *)&bm,
    364 			       0, NOLWP);
    365 
    366 	gp->g_data = (void *) 0xDeadBeaf; /* not particularly clean.. */
    367 
    368 	gi->gd_fbaddr  = bm.hw_address;
    369 	gi->gd_fbsize  = bm.phys_mappable;
    370 	gi->gd_linbase = bm.lin_base;
    371 	gi->gd_regaddr = bm.hw_regs;
    372 	gi->gd_regsize = bm.reg_size;
    373 	gi->gd_vgaaddr = bm.vga_address;
    374 	gi->gd_vgasize = bm.vga_mappable;
    375 	gi->gd_vgabase = bm.vga_base;
    376 
    377 	if ((*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCGSIZE, (void *)&vs, 0,
    378 	    NOLWP)) {
    379 		/*
    380 		 * fill in some default values...
    381 		 * XXX: Should _never_ happen
    382 		 */
    383 		vs.width  = 640;
    384 		vs.height = 400;
    385 		vs.depth  = 1;
    386 	}
    387 	gi->gd_colors = 1 << vs.depth;
    388 	gi->gd_planes = vs.depth;
    389 
    390 	gi->gd_fbwidth         = vs.width;
    391 	gi->gd_fbheight        = vs.height;
    392 	gi->gd_dyn.gdi_fbx     = 0;
    393 	gi->gd_dyn.gdi_fby     = 0;
    394 	gi->gd_dyn.gdi_dwidth  = vs.width;
    395 	gi->gd_dyn.gdi_dheight = vs.height;
    396 	gi->gd_dyn.gdi_dx      = 0;
    397 	gi->gd_dyn.gdi_dy      = 0;
    398 }
    399 
    400 /*
    401  * Change the mode of the display.
    402  * Right now all we can do is grfon/grfoff.
    403  * Return a UNIX error number or 0 for success.
    404  */
    405 /*ARGSUSED*/
    406 int
    407 grf_mode(struct grf_softc *gp, int cmd, void *arg, int a2, int a3)
    408 {
    409 	extern const struct cdevsw view_cdevsw;
    410 
    411 	switch (cmd) {
    412 		case GM_GRFON:
    413 			/*
    414 			 * Get in sync with view, ite might have changed it.
    415 			 */
    416 			grf_viewsync(gp);
    417 			(*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCDISPLAY,
    418 					       NULL, 0, NOLWP);
    419 			return 0;
    420 	case GM_GRFOFF:
    421 			(*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCREMOVE,
    422 					       NULL, 0, NOLWP);
    423 			return 0;
    424 	case GM_GRFCONFIG:
    425 	default:
    426 			break;
    427 	}
    428 	return EPASSTHROUGH;
    429 }
    430 #endif	/* NGRF > 0 */
    431