cgtwo.c revision 1.2
1 /* $NetBSD: cgtwo.c,v 1.2 1995/10/02 09:07:04 pk 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/buf.h> 57 #include <sys/device.h> 58 #include <sys/ioctl.h> 59 #include <sys/malloc.h> 60 #include <sys/mman.h> 61 #include <sys/tty.h> 62 63 #include <vm/vm.h> 64 65 #include <machine/fbio.h> 66 #include <machine/autoconf.h> 67 #include <machine/pmap.h> 68 #include <machine/fbvar.h> 69 #if defined(SUN4) 70 #include <machine/eeprom.h> 71 #endif 72 73 #include <sparc/dev/cgtworeg.h> 74 #include <sparc/dev/sbusvar.h> 75 76 /* per-display variables */ 77 struct cgtwo_softc { 78 struct device sc_dev; /* base device */ 79 struct sbusdev sc_sd; /* sbus device */ 80 struct fbdevice sc_fb; /* frame buffer device */ 81 caddr_t sc_phys; /* display RAM (phys addr) */ 82 volatile struct cg2reg *sc_reg; /* CG2 control registers */ 83 }; 84 85 /* autoconfiguration driver */ 86 static void cgtwoattach(struct device *, struct device *, void *); 87 static int cgtwomatch(struct device *, void *, void *); 88 int cgtwoopen __P((dev_t, int, int, struct proc *)); 89 int cgtwoclose __P((dev_t, int, int, struct proc *)); 90 int cgtwoioctl __P((dev_t, u_long, caddr_t, int, struct proc *)); 91 int cgtwommap __P((dev_t, int, int)); 92 static void cgtwounblank(struct device *); 93 94 struct cfdriver cgtwocd = { 95 NULL, "cgtwo", cgtwomatch, cgtwoattach, 96 DV_DULL, sizeof(struct cgtwo_softc) 97 }; 98 99 /* frame buffer generic driver */ 100 static struct fbdriver cgtwofbdriver = { 101 cgtwounblank, cgtwoopen, cgtwoclose, cgtwoioctl, cgtwommap 102 }; 103 104 extern int fbnode; 105 extern struct tty *fbconstty; 106 extern int nullop(); 107 static int cgtwo_cnputc(); 108 109 static void cgtwoloadcmap __P((struct cgtwo_softc *, int, int)); 110 111 /* 112 * Match a cgtwo. 113 */ 114 int 115 cgtwomatch(parent, vcf, aux) 116 struct device *parent; 117 void *vcf, *aux; 118 { 119 struct cfdata *cf = vcf; 120 struct confargs *ca = aux; 121 struct romaux *ra = &ca->ca_ra; 122 int probe; 123 caddr_t tmp; 124 125 if (ca->ca_bustype != BUS_VME16) 126 return (0); 127 128 if (strcmp(cf->cf_driver->cd_name, ra->ra_name)) 129 return (0); 130 131 #if defined(SUN4) 132 if (cputyp != CPU_SUN4 || cf->cf_unit != 0) 133 return (0); 134 135 /* XXX - Must do our own mapping at CG2_CTLREG_OFF */ 136 bus_untmp(); 137 tmp = (caddr_t)bus_tmp(ra->ra_paddr + CG2_CTLREG_OFF, ca->ca_bustype); 138 if (probeget(tmp, 2) != -1) 139 return 1; 140 #endif 141 return 0; 142 } 143 144 /* 145 * Attach a display. We need to notice if it is the console, too. 146 */ 147 void 148 cgtwoattach(parent, self, args) 149 struct device *parent, *self; 150 void *args; 151 { 152 register struct cgtwo_softc *sc = (struct cgtwo_softc *)self; 153 register struct confargs *ca = args; 154 register int node, i; 155 register struct cgtwo_all *p; 156 int isconsole; 157 int sbus = 1; 158 char *nam; 159 160 sc->sc_fb.fb_driver = &cgtwofbdriver; 161 sc->sc_fb.fb_device = &sc->sc_dev; 162 /* 163 * The defaults below match my screen, but are not guaranteed 164 * to be correct as defaults go... 165 */ 166 sc->sc_fb.fb_type.fb_type = FBTYPE_SUN2COLOR; 167 switch (ca->ca_bustype) { 168 case BUS_OBIO: 169 case BUS_VME32: 170 case BUS_VME16: 171 sbus = node = 0; 172 sc->sc_fb.fb_type.fb_width = 1152; 173 sc->sc_fb.fb_type.fb_height = 900; 174 sc->sc_fb.fb_linebytes = 1152; 175 nam = "cgtwo"; 176 177 #if defined(SUN4) 178 if (cputyp==CPU_SUN4) { 179 struct eeprom *eep = (struct eeprom *)eeprom_va; 180 if (eep != NULL) { 181 switch (eep->eeScreenSize) { 182 case EE_SCR_1152X900: 183 /* Handled above. */ 184 break; 185 186 case EE_SCR_1024X1024: 187 sc->sc_fb.fb_type.fb_width = 1024; 188 sc->sc_fb.fb_type.fb_height = 1024; 189 sc->sc_fb.fb_linebytes = 128; 190 break; 191 192 case EE_SCR_1600X1280: 193 sc->sc_fb.fb_type.fb_width = 1600; 194 sc->sc_fb.fb_type.fb_height = 1280; 195 sc->sc_fb.fb_linebytes = 200; 196 break; 197 198 case EE_SCR_1440X1440: 199 sc->sc_fb.fb_type.fb_width = 1440; 200 sc->sc_fb.fb_type.fb_height = 1440; 201 sc->sc_fb.fb_linebytes = 180; 202 break; 203 204 default: 205 /* 206 * XXX: Do nothing, I guess. 207 * Should we print a warning about 208 * an unknown value? --thorpej 209 */ 210 break; 211 } 212 } 213 } 214 #endif 215 break; 216 #if 0 217 case BUS_SBUS: 218 node = ca->ca_ra.ra_node; 219 sc->sc_fb.fb_type.fb_width = getpropint(node, "width", 1152); 220 sc->sc_fb.fb_type.fb_height = getpropint(node, "height", 900); 221 sc->sc_fb.fb_linebytes = getpropint(node, "linebytes", 1152); 222 nam = getpropstring(node, "model"); 223 break; 224 #endif 225 } 226 227 sc->sc_fb.fb_type.fb_depth = 8; 228 sc->sc_fb.fb_type.fb_cmsize = 256; 229 sc->sc_fb.fb_type.fb_size = roundup(CG2_MAPPED_SIZE, NBPG); 230 printf(": %s, %d x %d", nam, 231 sc->sc_fb.fb_type.fb_width, sc->sc_fb.fb_type.fb_height); 232 233 /* 234 * When the ROM has mapped in a cgtwo display, the address 235 * maps only the video RAM, so in any case we have to map the 236 * registers ourselves. We only need the video RAM if we are 237 * going to print characters via rconsole. 238 */ 239 #if defined(SUN4) 240 if (cputyp == CPU_SUN4) { 241 struct eeprom *eep = (struct eeprom *)eeprom_va; 242 /* 243 * Assume this is the console if there's no eeprom info 244 * to be found. 245 */ 246 if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) 247 isconsole = (fbconstty != NULL); 248 else 249 isconsole = 0; 250 } 251 #endif 252 #if defined(SUN4C) || defined(SUN4M) 253 if (cputyp == CPU_SUN4C || cputyp == CPU_SUN4M) 254 isconsole = node == fbnode && fbconstty != NULL; 255 #endif 256 sc->sc_phys = (caddr_t)ca->ca_ra.ra_paddr; 257 if ((sc->sc_fb.fb_pixels = ca->ca_ra.ra_vaddr) == NULL && isconsole) { 258 /* this probably cannot happen, but what the heck */ 259 sc->sc_fb.fb_pixels = mapiodev(sc->sc_phys + CG2_PIXMAP_OFF, 260 CG2_PIXMAP_SIZE, 261 ca->ca_bustype); 262 } 263 sc->sc_reg = (volatile struct cg2reg *) 264 mapiodev((caddr_t)sc->sc_phys + CG2_CTLREG_OFF, CG2_CTLREG_SIZE, 265 ca->ca_bustype); 266 267 if (isconsole) { 268 printf(" (console)\n"); 269 #ifdef RCONSOLE 270 fbrcons_init(&sc->sc_fb); 271 #endif 272 } else 273 printf("\n"); 274 if (sbus) 275 sbus_establish(&sc->sc_sd, &sc->sc_dev); 276 if (node == fbnode) 277 fb_attach(&sc->sc_fb); 278 } 279 280 int 281 cgtwoopen(dev, flags, mode, p) 282 dev_t dev; 283 int flags, mode; 284 struct proc *p; 285 { 286 int unit = minor(dev); 287 288 if (unit >= cgtwocd.cd_ndevs || cgtwocd.cd_devs[unit] == NULL) 289 return (ENXIO); 290 return (0); 291 } 292 293 int 294 cgtwoclose(dev, flags, mode, p) 295 dev_t dev; 296 int flags, mode; 297 struct proc *p; 298 { 299 300 return (0); 301 } 302 303 int 304 cgtwoioctl(dev, cmd, data, flags, p) 305 dev_t dev; 306 u_long cmd; 307 register caddr_t data; 308 int flags; 309 struct proc *p; 310 { 311 register struct cgtwo_softc *sc = cgtwocd.cd_devs[minor(dev)]; 312 register struct fbgattr *fba; 313 int error; 314 315 switch (cmd) { 316 317 case FBIOGTYPE: 318 *(struct fbtype *)data = sc->sc_fb.fb_type; 319 break; 320 321 case FBIOGATTR: 322 fba = (struct fbgattr *)data; 323 fba->real_type = sc->sc_fb.fb_type.fb_type; 324 fba->owner = 0; /* XXX ??? */ 325 fba->fbtype = sc->sc_fb.fb_type; 326 fba->sattr.flags = 0; 327 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 328 fba->sattr.dev_specific[0] = -1; 329 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 330 fba->emu_types[1] = -1; 331 break; 332 333 case FBIOGETCMAP: 334 return cgtwogetcmap(sc, data); 335 336 case FBIOPUTCMAP: 337 return cgtwoputcmap(sc, data); 338 339 case FBIOGVIDEO: 340 *(int *)data = sc->sc_reg->status.video_enab; 341 break; 342 343 case FBIOSVIDEO: 344 sc->sc_reg->status.video_enab = (*(int*)data) & 1; 345 break; 346 347 default: 348 return (ENOTTY); 349 } 350 return (0); 351 } 352 353 /* 354 * Undo the effect of an FBIOSVIDEO that turns the video off. 355 */ 356 static void 357 cgtwounblank(dev) 358 struct device *dev; 359 { 360 struct cgtwo_softc *sc = (struct cgtwo_softc *)dev; 361 sc->sc_reg->status.video_enab = 1; 362 } 363 364 /* 365 */ 366 int 367 cgtwogetcmap(sc, cmap) 368 register struct cgtwo_softc *sc; 369 register struct fbcmap *cmap; 370 { 371 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 372 int error, start, count, ecount; 373 register u_int i; 374 register u_short *p; 375 376 start = cmap->index; 377 count = cmap->count; 378 ecount = start + count; 379 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 380 return (EINVAL); 381 382 /* XXX - Wait for retrace? */ 383 384 /* Copy hardware to local arrays. */ 385 p = &sc->sc_reg->redmap[start]; 386 for (i = start; i < ecount; i++) 387 red[i] = *p++; 388 p = &sc->sc_reg->greenmap[start]; 389 for (i = start; i < ecount; i++) 390 green[i] = *p++; 391 p = &sc->sc_reg->bluemap[start]; 392 for (i = start; i < ecount; i++) 393 blue[i] = *p++; 394 395 /* Copy local arrays to user space. */ 396 if ((error = copyout(red + start, cmap->red, count)) != 0) 397 return (error); 398 if ((error = copyout(green + start, cmap->green, count)) != 0) 399 return (error); 400 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 401 return (error); 402 403 return (0); 404 } 405 406 /* 407 */ 408 int 409 cgtwoputcmap(sc, cmap) 410 register struct cgtwo_softc *sc; 411 register struct fbcmap *cmap; 412 { 413 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 414 int error, start, count, ecount; 415 register u_int i; 416 register u_short *p; 417 418 start = cmap->index; 419 count = cmap->count; 420 ecount = start + count; 421 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 422 return (EINVAL); 423 424 /* Copy from user space to local arrays. */ 425 if ((error = copyin(cmap->red, red + start, count)) != 0) 426 return (error); 427 if ((error = copyin(cmap->green, green + start, count)) != 0) 428 return (error); 429 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 430 return (error); 431 432 /* XXX - Wait for retrace? */ 433 434 /* Copy from local arrays to hardware. */ 435 p = &sc->sc_reg->redmap[start]; 436 for (i = start; i < ecount; i++) 437 *p++ = red[i]; 438 p = &sc->sc_reg->greenmap[start]; 439 for (i = start; i < ecount; i++) 440 *p++ = green[i]; 441 p = &sc->sc_reg->bluemap[start]; 442 for (i = start; i < ecount; i++) 443 *p++ = blue[i]; 444 445 return (0); 446 } 447 448 /* 449 * Return the address that would map the given device at the given 450 * offset, allowing for the given protection, or return -1 for error. 451 */ 452 int 453 cgtwommap(dev, off, prot) 454 dev_t dev; 455 int off, prot; 456 { 457 register struct cgtwo_softc *sc = cgtwocd.cd_devs[minor(dev)]; 458 459 if (off & PGOFSET) 460 panic("cgtwommap"); 461 462 if ((unsigned)off >= sc->sc_fb.fb_type.fb_size) 463 return (-1); 464 465 return ((int)sc->sc_phys + off + PMAP_VME16 + PMAP_NC); 466 } 467
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