cgtwo.c revision 1.12
1 /* $NetBSD: cgtwo.c,v 1.12 1996/03/17 02:00:54 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * from: @(#)cgthree.c 8.2 (Berkeley) 10/30/93 45 */ 46 47 /* 48 * color display (cgtwo) driver. 49 * 50 * Does not handle interrupts, even though they can occur. 51 * 52 * XXX should defer colormap updates to vertical retrace interrupts 53 */ 54 55 #include <sys/param.h> 56 #include <sys/systm.h> 57 #include <sys/buf.h> 58 #include <sys/device.h> 59 #include <sys/ioctl.h> 60 #include <sys/malloc.h> 61 #include <sys/mman.h> 62 #include <sys/tty.h> 63 64 #include <vm/vm.h> 65 66 #include <machine/fbio.h> 67 #include <machine/autoconf.h> 68 #include <machine/pmap.h> 69 #include <machine/fbvar.h> 70 #if defined(SUN4) 71 #include <machine/eeprom.h> 72 #endif 73 74 #include <machine/cgtworeg.h> 75 76 #include <sparc/dev/dev_conf.h> 77 78 /* per-display variables */ 79 struct cgtwo_softc { 80 struct device sc_dev; /* base device */ 81 struct fbdevice sc_fb; /* frame buffer device */ 82 struct rom_reg sc_phys; /* display RAM (phys addr) */ 83 int sc_bustype; /* type of bus we live on */ 84 volatile struct cg2statusreg *sc_reg; /* CG2 control registers */ 85 volatile u_short *sc_cmap; 86 #define sc_redmap(sc) ((sc)->sc_cmap) 87 #define sc_greenmap(sc) ((sc)->sc_cmap + CG2_CMSIZE) 88 #define sc_bluemap(sc) ((sc)->sc_cmap + 2 * CG2_CMSIZE) 89 }; 90 91 /* autoconfiguration driver */ 92 static void cgtwoattach(struct device *, struct device *, void *); 93 static int cgtwomatch(struct device *, void *, void *); 94 int cgtwoopen __P((dev_t, int, int, struct proc *)); 95 int cgtwoclose __P((dev_t, int, int, struct proc *)); 96 int cgtwoioctl __P((dev_t, u_long, caddr_t, int, struct proc *)); 97 int cgtwommap __P((dev_t, int, int)); 98 static void cgtwounblank __P((struct device *)); 99 int cgtwogetcmap __P((struct cgtwo_softc *, struct fbcmap *)); 100 int cgtwoputcmap __P((struct cgtwo_softc *, struct fbcmap *)); 101 102 struct cfattach cgtwo_ca = { 103 sizeof(struct cgtwo_softc), cgtwomatch, cgtwoattach 104 }; 105 106 struct cfdriver cgtwo_cd = { 107 NULL, "cgtwo", DV_DULL 108 }; 109 110 /* frame buffer generic driver */ 111 static struct fbdriver cgtwofbdriver = { 112 cgtwounblank, cgtwoopen, cgtwoclose, cgtwoioctl, cgtwommap 113 }; 114 115 extern int fbnode; 116 extern struct tty *fbconstty; 117 118 /* 119 * Match a cgtwo. 120 */ 121 int 122 cgtwomatch(parent, vcf, aux) 123 struct device *parent; 124 void *vcf, *aux; 125 { 126 struct cfdata *cf = vcf; 127 struct confargs *ca = aux; 128 struct romaux *ra = &ca->ca_ra; 129 caddr_t tmp; 130 131 /* 132 * Mask out invalid flags from the user. 133 */ 134 cf->cf_flags &= FB_USERMASK; 135 136 if (ca->ca_bustype != BUS_VME16) 137 return (0); 138 139 if (strcmp(cf->cf_driver->cd_name, ra->ra_name)) 140 return (0); 141 142 #if defined(SUN4) 143 if (!CPU_ISSUN4 || cf->cf_unit != 0) 144 return (0); 145 146 /* XXX - Must do our own mapping at CG2_CTLREG_OFF */ 147 bus_untmp(); 148 tmp = (caddr_t)bus_tmp(ra->ra_paddr + CG2_CTLREG_OFF, ca->ca_bustype); 149 if (probeget(tmp, 2) != -1) 150 return 1; 151 #endif 152 return 0; 153 } 154 155 /* 156 * Attach a display. We need to notice if it is the console, too. 157 */ 158 void 159 cgtwoattach(parent, self, args) 160 struct device *parent, *self; 161 void *args; 162 { 163 register struct cgtwo_softc *sc = (struct cgtwo_softc *)self; 164 register struct confargs *ca = args; 165 register int node = 0; 166 int isconsole = 0; 167 char *nam = NULL; 168 169 sc->sc_fb.fb_driver = &cgtwofbdriver; 170 sc->sc_fb.fb_device = &sc->sc_dev; 171 sc->sc_fb.fb_type.fb_type = FBTYPE_SUN2COLOR; 172 sc->sc_fb.fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 173 174 switch (ca->ca_bustype) { 175 case BUS_VME16: 176 node = 0; 177 nam = "cgtwo"; 178 break; 179 180 default: 181 panic("cgtwoattach: impossible bustype"); 182 /* NOTREACHED */ 183 } 184 185 sc->sc_fb.fb_type.fb_depth = 8; 186 fb_setsize(&sc->sc_fb, sc->sc_fb.fb_type.fb_depth, 187 1152, 900, node, ca->ca_bustype); 188 189 sc->sc_fb.fb_type.fb_cmsize = 256; 190 sc->sc_fb.fb_type.fb_size = roundup(CG2_MAPPED_SIZE, NBPG); 191 printf(": %s, %d x %d", nam, 192 sc->sc_fb.fb_type.fb_width, sc->sc_fb.fb_type.fb_height); 193 194 /* 195 * When the ROM has mapped in a cgtwo display, the address 196 * maps only the video RAM, so in any case we have to map the 197 * registers ourselves. We only need the video RAM if we are 198 * going to print characters via rconsole. 199 */ 200 #if defined(SUN4) 201 if (CPU_ISSUN4) { 202 struct eeprom *eep = (struct eeprom *)eeprom_va; 203 /* 204 * Assume this is the console if there's no eeprom info 205 * to be found. 206 */ 207 if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) 208 isconsole = (fbconstty != NULL); 209 else 210 isconsole = 0; 211 } 212 #endif 213 sc->sc_phys = ca->ca_ra.ra_reg[0]; 214 sc->sc_bustype = ca->ca_bustype; 215 216 if ((sc->sc_fb.fb_pixels = ca->ca_ra.ra_vaddr) == NULL && isconsole) { 217 /* this probably cannot happen, but what the heck */ 218 sc->sc_fb.fb_pixels = mapiodev(ca->ca_ra.ra_reg, CG2_PIXMAP_OFF, 219 CG2_PIXMAP_SIZE, 220 ca->ca_bustype); 221 } 222 #ifndef offsetof 223 #define offsetof(type, member) ((size_t)(&((type *)0)->member)) 224 #endif 225 226 sc->sc_reg = (volatile struct cg2statusreg *) 227 mapiodev(ca->ca_ra.ra_reg, 228 CG2_ROPMEM_OFF + offsetof(struct cg2fb, status.reg), 229 sizeof(struct cg2statusreg), ca->ca_bustype); 230 231 sc->sc_cmap = (volatile u_short *) 232 mapiodev(ca->ca_ra.ra_reg, 233 CG2_ROPMEM_OFF + offsetof(struct cg2fb, redmap[0]), 234 3 * CG2_CMSIZE, ca->ca_bustype); 235 236 if (isconsole) { 237 printf(" (console)\n"); 238 #ifdef RASTERCONSOLE 239 fbrcons_init(&sc->sc_fb); 240 #endif 241 } else 242 printf("\n"); 243 244 if (node == fbnode || CPU_ISSUN4) 245 fb_attach(&sc->sc_fb, isconsole); 246 } 247 248 int 249 cgtwoopen(dev, flags, mode, p) 250 dev_t dev; 251 int flags, mode; 252 struct proc *p; 253 { 254 int unit = minor(dev); 255 256 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 257 return (ENXIO); 258 return (0); 259 } 260 261 int 262 cgtwoclose(dev, flags, mode, p) 263 dev_t dev; 264 int flags, mode; 265 struct proc *p; 266 { 267 268 return (0); 269 } 270 271 int 272 cgtwoioctl(dev, cmd, data, flags, p) 273 dev_t dev; 274 u_long cmd; 275 register caddr_t data; 276 int flags; 277 struct proc *p; 278 { 279 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 280 register struct fbgattr *fba; 281 282 switch (cmd) { 283 284 case FBIOGTYPE: 285 *(struct fbtype *)data = sc->sc_fb.fb_type; 286 break; 287 288 case FBIOGATTR: 289 fba = (struct fbgattr *)data; 290 fba->real_type = sc->sc_fb.fb_type.fb_type; 291 fba->owner = 0; /* XXX ??? */ 292 fba->fbtype = sc->sc_fb.fb_type; 293 fba->sattr.flags = 0; 294 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 295 fba->sattr.dev_specific[0] = -1; 296 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 297 fba->emu_types[1] = -1; 298 break; 299 300 case FBIOGETCMAP: 301 return cgtwogetcmap(sc, (struct fbcmap *) data); 302 303 case FBIOPUTCMAP: 304 return cgtwoputcmap(sc, (struct fbcmap *) data); 305 306 case FBIOGVIDEO: 307 *(int *)data = sc->sc_reg->video_enab; 308 break; 309 310 case FBIOSVIDEO: 311 sc->sc_reg->video_enab = (*(int*)data) & 1; 312 break; 313 314 default: 315 return (ENOTTY); 316 } 317 return (0); 318 } 319 320 /* 321 * Undo the effect of an FBIOSVIDEO that turns the video off. 322 */ 323 static void 324 cgtwounblank(dev) 325 struct device *dev; 326 { 327 struct cgtwo_softc *sc = (struct cgtwo_softc *)dev; 328 sc->sc_reg->video_enab = 1; 329 } 330 331 /* 332 */ 333 int 334 cgtwogetcmap(sc, cmap) 335 register struct cgtwo_softc *sc; 336 register struct fbcmap *cmap; 337 { 338 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 339 int error, start, count, ecount; 340 register u_int i; 341 register volatile u_short *p; 342 343 start = cmap->index; 344 count = cmap->count; 345 ecount = start + count; 346 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 347 return (EINVAL); 348 349 /* XXX - Wait for retrace? */ 350 351 /* Copy hardware to local arrays. */ 352 p = &sc_redmap(sc)[start]; 353 for (i = start; i < ecount; i++) 354 red[i] = *p++; 355 p = &sc_greenmap(sc)[start]; 356 for (i = start; i < ecount; i++) 357 green[i] = *p++; 358 p = &sc_bluemap(sc)[start]; 359 for (i = start; i < ecount; i++) 360 blue[i] = *p++; 361 362 /* Copy local arrays to user space. */ 363 if ((error = copyout(red + start, cmap->red, count)) != 0) 364 return (error); 365 if ((error = copyout(green + start, cmap->green, count)) != 0) 366 return (error); 367 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 368 return (error); 369 370 return (0); 371 } 372 373 /* 374 */ 375 int 376 cgtwoputcmap(sc, cmap) 377 register struct cgtwo_softc *sc; 378 register struct fbcmap *cmap; 379 { 380 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 381 int error, start, count, ecount; 382 register u_int i; 383 register volatile u_short *p; 384 385 start = cmap->index; 386 count = cmap->count; 387 ecount = start + count; 388 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 389 return (EINVAL); 390 391 /* Copy from user space to local arrays. */ 392 if ((error = copyin(cmap->red, red + start, count)) != 0) 393 return (error); 394 if ((error = copyin(cmap->green, green + start, count)) != 0) 395 return (error); 396 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 397 return (error); 398 399 /* XXX - Wait for retrace? */ 400 401 /* Copy from local arrays to hardware. */ 402 p = &sc_redmap(sc)[start]; 403 for (i = start; i < ecount; i++) 404 *p++ = red[i]; 405 p = &sc_greenmap(sc)[start]; 406 for (i = start; i < ecount; i++) 407 *p++ = green[i]; 408 p = &sc_bluemap(sc)[start]; 409 for (i = start; i < ecount; i++) 410 *p++ = blue[i]; 411 412 return (0); 413 } 414 415 /* 416 * Return the address that would map the given device at the given 417 * offset, allowing for the given protection, or return -1 for error. 418 */ 419 int 420 cgtwommap(dev, off, prot) 421 dev_t dev; 422 int off, prot; 423 { 424 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 425 426 if (off & PGOFSET) 427 panic("cgtwommap"); 428 429 if ((unsigned)off >= sc->sc_fb.fb_type.fb_size) 430 return (-1); 431 432 return (REG2PHYS(&sc->sc_phys, off, PMAP_VME32/*sc->sc_bustype*/) | PMAP_NC); 433 } 434
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