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grf.c revision 1.48 
      1 /*	$NetBSD: grf.c,v 1.48 2014/03/16 05:20:23 dholland 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 1.48 2014/03/16 05:20:23 dholland 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 	.d_open = grfopen,
    112 	.d_close = grfclose,
    113 	.d_read = noread,
    114 	.d_write = nowrite,
    115 	.d_ioctl = grfioctl,
    116 	.d_stop = nostop,
    117 	.d_tty = notty,
    118 	.d_poll = nopoll,
    119 	.d_mmap = grfmmap,
    120 	.d_kqfilter = nokqfilter,
    121 	.d_flag = 0
    122 };
    123 
    124 /*
    125  * only used in console init.
    126  */
    127 static cfdata_t cfdata_gbus  = NULL;
    128 
    129 int
    130 grfbusmatch(device_t parent, cfdata_t cf, void *aux)
    131 {
    132 
    133 	if (strcmp(aux, grfbus_cd.cd_name))
    134 		return 0;
    135 
    136 	if (atari_realconfig == 0)
    137 		cfdata_gbus = cf;
    138 	return 1;	/* Always there	*/
    139 }
    140 
    141 void
    142 grfbusattach(device_t parent, device_t self, void *aux)
    143 {
    144 	grf_auxp_t	grf_auxp;
    145 
    146 	grf_auxp.busprint       = grfbusprint;
    147 	grf_auxp.from_bus_match = 1;
    148 
    149 	if (self == NULL) /* Console init	*/
    150 		atari_config_found(cfdata_gbus, NULL, &grf_auxp, grfbusprint);
    151 	else {
    152 		printf("\n");
    153 		config_found(self, &grf_auxp, grfbusprint);
    154 	}
    155 }
    156 
    157 int
    158 grfbusprint(void *aux, const char *name)
    159 {
    160 
    161 	if (name == NULL)
    162 		return UNCONF;
    163 	return QUIET;
    164 }
    165 
    166 /*ARGSUSED*/
    167 int
    168 grfopen(dev_t dev, int flags, int devtype, struct lwp *l)
    169 {
    170 	struct grf_softc *gp;
    171 
    172 	if (GRFUNIT(dev) >= NGRF)
    173 		return ENXIO;
    174 
    175 	gp = grfsp[GRFUNIT(dev)];
    176 	if (gp == 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 	grf_viewsync(gp);
    185 
    186 	return 0;
    187 }
    188 
    189 /*ARGSUSED*/
    190 int
    191 grfclose(dev_t dev, int flags, int mode, struct lwp *l)
    192 {
    193 	struct grf_softc *gp;
    194 
    195 	gp = grfsp[GRFUNIT(dev)];
    196 	(void)grfoff(dev);
    197 	gp->g_flags &= GF_ALIVE;
    198 	return 0;
    199 }
    200 
    201 /*ARGSUSED*/
    202 int
    203 grfioctl(dev_t dev, u_long cmd, void * data, int flag, struct lwp *l)
    204 {
    205 	struct grf_softc	*gp;
    206 	int			error;
    207 	extern const struct cdevsw view_cdevsw;
    208 
    209 	gp = grfsp[GRFUNIT(dev)];
    210 	error = 0;
    211 
    212 	switch (cmd) {
    213 	case OGRFIOCGINFO:
    214 	        /* argl.. no bank-member.. */
    215 	  	memcpy(data, (void *)&gp->g_display, sizeof(struct grfinfo)-4);
    216 		break;
    217 	case GRFIOCGINFO:
    218 		memcpy(data, (void *)&gp->g_display, sizeof(struct grfinfo));
    219 		break;
    220 	case GRFIOCON:
    221 		error = grfon(dev);
    222 		break;
    223 	case GRFIOCOFF:
    224 		error = grfoff(dev);
    225 		break;
    226 	case GRFIOCSINFO:
    227 		error = grfsinfo(dev, (struct grfdyninfo *) data);
    228 		break;
    229 	case GRFGETVMODE:
    230 		return gp->g_mode(gp, GM_GRFGETVMODE, data, 0, 0);
    231 	case GRFSETVMODE:
    232 		error = gp->g_mode(gp, GM_GRFSETVMODE, data, 0, 0);
    233 		if (error == 0 && gp->g_itedev)
    234 			ite_reinit(gp->g_itedev);
    235 		break;
    236 	case GRFGETNUMVM:
    237 		return gp->g_mode(gp, GM_GRFGETNUMVM, data, 0, 0);
    238 	/*
    239 	 * these are all hardware dependent, and have to be resolved
    240 	 * in the respective driver.
    241 	 */
    242 	case GRFIOCPUTCMAP:
    243 	case GRFIOCGETCMAP:
    244 	case GRFIOCSSPRITEPOS:
    245 	case GRFIOCGSPRITEPOS:
    246 	case GRFIOCSSPRITEINF:
    247 	case GRFIOCGSPRITEINF:
    248 	case GRFIOCGSPRITEMAX:
    249 	default:
    250 		/*
    251 		 * check to see whether it's a command recognized by the
    252 		 * view code.
    253 		 */
    254 		return (*view_cdevsw.d_ioctl)(gp->g_viewdev,
    255 		    cmd, data, flag, l);
    256 		error = EINVAL;
    257 		break;
    258 
    259 	}
    260 	return error;
    261 }
    262 
    263 /*
    264  * map the contents of a graphics display card into process'
    265  * memory space.
    266  */
    267 paddr_t
    268 grfmmap(dev_t dev, off_t off, int prot)
    269 {
    270 	struct grf_softc	*gp;
    271 	struct grfinfo		*gi;
    272 	u_int			vgabase, linbase;
    273 
    274 	gp = grfsp[GRFUNIT(dev)];
    275 	gi = &gp->g_display;
    276 
    277 	vgabase = gi->gd_vgabase;
    278 	linbase = gi->gd_linbase;
    279 
    280 	/*
    281 	 * control registers
    282 	 */
    283 	if (off >= 0 && off < gi->gd_regsize)
    284 		return ((paddr_t)gi->gd_regaddr + off) >> PGSHIFT;
    285 
    286 	/*
    287 	 * VGA memory
    288 	 */
    289 	if (off >= vgabase && off < (vgabase + gi->gd_vgasize))
    290 		return ((paddr_t)gi->gd_vgaaddr - vgabase + off) >> PGSHIFT;
    291 
    292 	/*
    293 	 * frame buffer
    294 	 */
    295 	if (off >= linbase && off < (linbase + gi->gd_fbsize))
    296 		return ((paddr_t)gi->gd_fbaddr - linbase + off) >> PGSHIFT;
    297 	return -1;
    298 }
    299 
    300 int
    301 grfon(dev_t dev)
    302 {
    303 	struct grf_softc *gp;
    304 
    305 	gp = grfsp[GRFUNIT(dev)];
    306 
    307 	if (gp->g_flags & GF_GRFON)
    308 		return 0;
    309 
    310 	gp->g_flags |= GF_GRFON;
    311 	if (gp->g_itedev != NODEV)
    312 		ite_off(gp->g_itedev, 3);
    313 
    314 	return gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVON : GM_GRFON,
    315 	    NULL, 0, 0);
    316 }
    317 
    318 int
    319 grfoff(dev_t dev)
    320 {
    321 	struct grf_softc *gp;
    322 	int error;
    323 
    324 	gp = grfsp[GRFUNIT(dev)];
    325 
    326 	if ((gp->g_flags & GF_GRFON) == 0)
    327 		return 0;
    328 
    329 	gp->g_flags &= ~GF_GRFON;
    330 	error = gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF,
    331 	    NULL, 0, 0);
    332 
    333 	/*
    334 	 * Closely tied together no X's
    335 	 */
    336 	if (gp->g_itedev != NODEV)
    337 		ite_on(gp->g_itedev, 2);
    338 
    339 	return error;
    340 }
    341 
    342 int
    343 grfsinfo(dev_t dev, struct grfdyninfo *dyninfo)
    344 {
    345 	struct grf_softc *gp;
    346 	int error;
    347 
    348 	gp = grfsp[GRFUNIT(dev)];
    349 	error = gp->g_mode(gp, GM_GRFCONFIG, dyninfo, 0, 0);
    350 
    351 	/*
    352 	 * Closely tied together no X's
    353 	 */
    354 	if (gp->g_itedev != NODEV)
    355 		ite_reinit(gp->g_itedev);
    356 	return error;
    357 }
    358 
    359 /*
    360  * Get the grf-info in sync with underlying view.
    361  */
    362 void
    363 grf_viewsync(struct grf_softc *gp)
    364 {
    365 	struct view_size	vs;
    366 	bmap_t			bm;
    367 	struct grfinfo		*gi;
    368 	extern const struct cdevsw view_cdevsw;
    369 
    370 	gi = &gp->g_display;
    371 
    372 	(*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCGBMAP, (void *)&bm,
    373 			       0, NOLWP);
    374 
    375 	gp->g_data = (void *) 0xDeadBeaf; /* not particularly clean.. */
    376 
    377 	gi->gd_fbaddr  = bm.hw_address;
    378 	gi->gd_fbsize  = bm.phys_mappable;
    379 	gi->gd_linbase = bm.lin_base;
    380 	gi->gd_regaddr = bm.hw_regs;
    381 	gi->gd_regsize = bm.reg_size;
    382 	gi->gd_vgaaddr = bm.vga_address;
    383 	gi->gd_vgasize = bm.vga_mappable;
    384 	gi->gd_vgabase = bm.vga_base;
    385 
    386 	if ((*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCGSIZE, (void *)&vs, 0,
    387 	    NOLWP)) {
    388 		/*
    389 		 * fill in some default values...
    390 		 * XXX: Should _never_ happen
    391 		 */
    392 		vs.width  = 640;
    393 		vs.height = 400;
    394 		vs.depth  = 1;
    395 	}
    396 	gi->gd_colors = 1 << vs.depth;
    397 	gi->gd_planes = vs.depth;
    398 
    399 	gi->gd_fbwidth         = vs.width;
    400 	gi->gd_fbheight        = vs.height;
    401 	gi->gd_dyn.gdi_fbx     = 0;
    402 	gi->gd_dyn.gdi_fby     = 0;
    403 	gi->gd_dyn.gdi_dwidth  = vs.width;
    404 	gi->gd_dyn.gdi_dheight = vs.height;
    405 	gi->gd_dyn.gdi_dx      = 0;
    406 	gi->gd_dyn.gdi_dy      = 0;
    407 }
    408 
    409 /*
    410  * Change the mode of the display.
    411  * Right now all we can do is grfon/grfoff.
    412  * Return a UNIX error number or 0 for success.
    413  */
    414 /*ARGSUSED*/
    415 int
    416 grf_mode(struct grf_softc *gp, int cmd, void *arg, int a2, int a3)
    417 {
    418 	extern const struct cdevsw view_cdevsw;
    419 
    420 	switch (cmd) {
    421 		case GM_GRFON:
    422 			/*
    423 			 * Get in sync with view, ite might have changed it.
    424 			 */
    425 			grf_viewsync(gp);
    426 			(*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCDISPLAY,
    427 					       NULL, 0, NOLWP);
    428 			return 0;
    429 	case GM_GRFOFF:
    430 			(*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCREMOVE,
    431 					       NULL, 0, NOLWP);
    432 			return 0;
    433 	case GM_GRFCONFIG:
    434 	default:
    435 			break;
    436 	}
    437 	return EPASSTHROUGH;
    438 }
    439 #endif	/* NGRF > 0 */
    440