cgtwo.c revision 1.4
1 /* $NetBSD: cgtwo.c,v 1.4 1995/10/04 23:35:16 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 <machine/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 cg2statusreg *sc_reg; /* CG2 control registers */ 83 volatile u_short *sc_cmap; 84 #define sc_redmap(sc) ((sc)->sc_cmap) 85 #define sc_greenmap(sc) ((sc)->sc_cmap + CG2_CMSIZE) 86 #define sc_bluemap(sc) ((sc)->sc_cmap + 2 * CG2_CMSIZE) 87 }; 88 89 /* autoconfiguration driver */ 90 static void cgtwoattach(struct device *, struct device *, void *); 91 static int cgtwomatch(struct device *, void *, void *); 92 int cgtwoopen __P((dev_t, int, int, struct proc *)); 93 int cgtwoclose __P((dev_t, int, int, struct proc *)); 94 int cgtwoioctl __P((dev_t, u_long, caddr_t, int, struct proc *)); 95 int cgtwommap __P((dev_t, int, int)); 96 static void cgtwounblank(struct device *); 97 98 struct cfdriver cgtwocd = { 99 NULL, "cgtwo", cgtwomatch, cgtwoattach, 100 DV_DULL, sizeof(struct cgtwo_softc) 101 }; 102 103 /* frame buffer generic driver */ 104 static struct fbdriver cgtwofbdriver = { 105 cgtwounblank, cgtwoopen, cgtwoclose, cgtwoioctl, cgtwommap 106 }; 107 108 extern int fbnode; 109 extern struct tty *fbconstty; 110 extern int nullop(); 111 static int cgtwo_cnputc(); 112 113 static void cgtwoloadcmap __P((struct cgtwo_softc *, int, int)); 114 115 /* 116 * Match a cgtwo. 117 */ 118 int 119 cgtwomatch(parent, vcf, aux) 120 struct device *parent; 121 void *vcf, *aux; 122 { 123 struct cfdata *cf = vcf; 124 struct confargs *ca = aux; 125 struct romaux *ra = &ca->ca_ra; 126 int probe; 127 caddr_t tmp; 128 129 if (ca->ca_bustype != BUS_VME16) 130 return (0); 131 132 if (strcmp(cf->cf_driver->cd_name, ra->ra_name)) 133 return (0); 134 135 #if defined(SUN4) 136 if (cputyp != CPU_SUN4 || cf->cf_unit != 0) 137 return (0); 138 139 /* XXX - Must do our own mapping at CG2_CTLREG_OFF */ 140 bus_untmp(); 141 tmp = (caddr_t)bus_tmp(ra->ra_paddr + CG2_CTLREG_OFF, ca->ca_bustype); 142 if (probeget(tmp, 2) != -1) 143 return 1; 144 #endif 145 return 0; 146 } 147 148 /* 149 * Attach a display. We need to notice if it is the console, too. 150 */ 151 void 152 cgtwoattach(parent, self, args) 153 struct device *parent, *self; 154 void *args; 155 { 156 register struct cgtwo_softc *sc = (struct cgtwo_softc *)self; 157 register struct confargs *ca = args; 158 register int node, i; 159 register struct cgtwo_all *p; 160 int isconsole; 161 int sbus = 1; 162 char *nam; 163 164 sc->sc_fb.fb_driver = &cgtwofbdriver; 165 sc->sc_fb.fb_device = &sc->sc_dev; 166 /* 167 * The defaults below match my screen, but are not guaranteed 168 * to be correct as defaults go... 169 */ 170 sc->sc_fb.fb_type.fb_type = FBTYPE_SUN2COLOR; 171 switch (ca->ca_bustype) { 172 case BUS_OBIO: 173 case BUS_VME32: 174 case BUS_VME16: 175 sbus = node = 0; 176 sc->sc_fb.fb_type.fb_width = 1152; 177 sc->sc_fb.fb_type.fb_height = 900; 178 sc->sc_fb.fb_linebytes = 1152; 179 nam = "cgtwo"; 180 181 #if defined(SUN4) 182 if (cputyp==CPU_SUN4) { 183 struct eeprom *eep = (struct eeprom *)eeprom_va; 184 if (eep != NULL) { 185 switch (eep->eeScreenSize) { 186 case EE_SCR_1152X900: 187 /* Handled above. */ 188 break; 189 190 case EE_SCR_1024X1024: 191 sc->sc_fb.fb_type.fb_width = 1024; 192 sc->sc_fb.fb_type.fb_height = 1024; 193 sc->sc_fb.fb_linebytes = 128; 194 break; 195 196 case EE_SCR_1600X1280: 197 sc->sc_fb.fb_type.fb_width = 1600; 198 sc->sc_fb.fb_type.fb_height = 1280; 199 sc->sc_fb.fb_linebytes = 200; 200 break; 201 202 case EE_SCR_1440X1440: 203 sc->sc_fb.fb_type.fb_width = 1440; 204 sc->sc_fb.fb_type.fb_height = 1440; 205 sc->sc_fb.fb_linebytes = 180; 206 break; 207 208 default: 209 /* 210 * XXX: Do nothing, I guess. 211 * Should we print a warning about 212 * an unknown value? --thorpej 213 */ 214 break; 215 } 216 } 217 } 218 #endif 219 break; 220 #if 0 221 case BUS_SBUS: 222 node = ca->ca_ra.ra_node; 223 sc->sc_fb.fb_type.fb_width = getpropint(node, "width", 1152); 224 sc->sc_fb.fb_type.fb_height = getpropint(node, "height", 900); 225 sc->sc_fb.fb_linebytes = getpropint(node, "linebytes", 1152); 226 nam = getpropstring(node, "model"); 227 break; 228 #endif 229 } 230 231 sc->sc_fb.fb_type.fb_depth = 8; 232 sc->sc_fb.fb_type.fb_cmsize = 256; 233 sc->sc_fb.fb_type.fb_size = roundup(CG2_MAPPED_SIZE, NBPG); 234 printf(": %s, %d x %d", nam, 235 sc->sc_fb.fb_type.fb_width, sc->sc_fb.fb_type.fb_height); 236 237 /* 238 * When the ROM has mapped in a cgtwo display, the address 239 * maps only the video RAM, so in any case we have to map the 240 * registers ourselves. We only need the video RAM if we are 241 * going to print characters via rconsole. 242 */ 243 #if defined(SUN4) 244 if (cputyp == CPU_SUN4) { 245 struct eeprom *eep = (struct eeprom *)eeprom_va; 246 /* 247 * Assume this is the console if there's no eeprom info 248 * to be found. 249 */ 250 if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) 251 isconsole = (fbconstty != NULL); 252 else 253 isconsole = 0; 254 } 255 #endif 256 #if defined(SUN4C) || defined(SUN4M) 257 if (cputyp == CPU_SUN4C || cputyp == CPU_SUN4M) 258 isconsole = node == fbnode && fbconstty != NULL; 259 #endif 260 sc->sc_phys = (caddr_t)ca->ca_ra.ra_paddr; 261 if ((sc->sc_fb.fb_pixels = ca->ca_ra.ra_vaddr) == NULL && isconsole) { 262 /* this probably cannot happen, but what the heck */ 263 sc->sc_fb.fb_pixels = mapiodev(sc->sc_phys + CG2_PIXMAP_OFF, 264 CG2_PIXMAP_SIZE, 265 ca->ca_bustype); 266 } 267 #ifndef offsetof 268 #define offsetof(type, member) ((size_t)(&((type *)0)->member)) 269 #endif 270 271 sc->sc_reg = (volatile struct cg2statusreg *) 272 mapiodev((caddr_t)sc->sc_phys + 273 CG2_ROPMEM_OFF + offsetof(struct cg2fb, status.reg), 274 sizeof(struct cg2statusreg), ca->ca_bustype); 275 276 sc->sc_cmap = (volatile u_short *) 277 mapiodev((caddr_t)sc->sc_phys + 278 CG2_ROPMEM_OFF + offsetof(struct cg2fb, redmap[0]), 279 3 * CG2_CMSIZE, ca->ca_bustype); 280 281 if (isconsole) { 282 printf(" (console)\n"); 283 #ifdef RASTERCONSOLE 284 fbrcons_init(&sc->sc_fb); 285 #endif 286 } else 287 printf("\n"); 288 if (sbus) 289 sbus_establish(&sc->sc_sd, &sc->sc_dev); 290 if (node == fbnode) 291 fb_attach(&sc->sc_fb); 292 } 293 294 int 295 cgtwoopen(dev, flags, mode, p) 296 dev_t dev; 297 int flags, mode; 298 struct proc *p; 299 { 300 int unit = minor(dev); 301 302 if (unit >= cgtwocd.cd_ndevs || cgtwocd.cd_devs[unit] == NULL) 303 return (ENXIO); 304 return (0); 305 } 306 307 int 308 cgtwoclose(dev, flags, mode, p) 309 dev_t dev; 310 int flags, mode; 311 struct proc *p; 312 { 313 314 return (0); 315 } 316 317 int 318 cgtwoioctl(dev, cmd, data, flags, p) 319 dev_t dev; 320 u_long cmd; 321 register caddr_t data; 322 int flags; 323 struct proc *p; 324 { 325 register struct cgtwo_softc *sc = cgtwocd.cd_devs[minor(dev)]; 326 register struct fbgattr *fba; 327 int error; 328 329 switch (cmd) { 330 331 case FBIOGTYPE: 332 *(struct fbtype *)data = sc->sc_fb.fb_type; 333 break; 334 335 case FBIOGATTR: 336 fba = (struct fbgattr *)data; 337 fba->real_type = sc->sc_fb.fb_type.fb_type; 338 fba->owner = 0; /* XXX ??? */ 339 fba->fbtype = sc->sc_fb.fb_type; 340 fba->sattr.flags = 0; 341 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 342 fba->sattr.dev_specific[0] = -1; 343 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 344 fba->emu_types[1] = -1; 345 break; 346 347 case FBIOGETCMAP: 348 return cgtwogetcmap(sc, data); 349 350 case FBIOPUTCMAP: 351 return cgtwoputcmap(sc, data); 352 353 case FBIOGVIDEO: 354 *(int *)data = sc->sc_reg->video_enab; 355 break; 356 357 case FBIOSVIDEO: 358 sc->sc_reg->video_enab = (*(int*)data) & 1; 359 break; 360 361 default: 362 return (ENOTTY); 363 } 364 return (0); 365 } 366 367 /* 368 * Undo the effect of an FBIOSVIDEO that turns the video off. 369 */ 370 static void 371 cgtwounblank(dev) 372 struct device *dev; 373 { 374 struct cgtwo_softc *sc = (struct cgtwo_softc *)dev; 375 sc->sc_reg->video_enab = 1; 376 } 377 378 /* 379 */ 380 int 381 cgtwogetcmap(sc, cmap) 382 register struct cgtwo_softc *sc; 383 register struct fbcmap *cmap; 384 { 385 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 386 int error, start, count, ecount; 387 register u_int i; 388 register volatile u_short *p; 389 390 start = cmap->index; 391 count = cmap->count; 392 ecount = start + count; 393 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 394 return (EINVAL); 395 396 /* XXX - Wait for retrace? */ 397 398 /* Copy hardware to local arrays. */ 399 p = &sc_redmap(sc)[start]; 400 for (i = start; i < ecount; i++) 401 red[i] = *p++; 402 p = &sc_greenmap(sc)[start]; 403 for (i = start; i < ecount; i++) 404 green[i] = *p++; 405 p = &sc_bluemap(sc)[start]; 406 for (i = start; i < ecount; i++) 407 blue[i] = *p++; 408 409 /* Copy local arrays to user space. */ 410 if ((error = copyout(red + start, cmap->red, count)) != 0) 411 return (error); 412 if ((error = copyout(green + start, cmap->green, count)) != 0) 413 return (error); 414 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 415 return (error); 416 417 return (0); 418 } 419 420 /* 421 */ 422 int 423 cgtwoputcmap(sc, cmap) 424 register struct cgtwo_softc *sc; 425 register struct fbcmap *cmap; 426 { 427 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 428 int error, start, count, ecount; 429 register u_int i; 430 register volatile u_short *p; 431 432 start = cmap->index; 433 count = cmap->count; 434 ecount = start + count; 435 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 436 return (EINVAL); 437 438 /* Copy from user space to local arrays. */ 439 if ((error = copyin(cmap->red, red + start, count)) != 0) 440 return (error); 441 if ((error = copyin(cmap->green, green + start, count)) != 0) 442 return (error); 443 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 444 return (error); 445 446 /* XXX - Wait for retrace? */ 447 448 /* Copy from local arrays to hardware. */ 449 p = &sc_redmap(sc)[start]; 450 for (i = start; i < ecount; i++) 451 *p++ = red[i]; 452 p = &sc_greenmap(sc)[start]; 453 for (i = start; i < ecount; i++) 454 *p++ = green[i]; 455 p = &sc_bluemap(sc)[start]; 456 for (i = start; i < ecount; i++) 457 *p++ = blue[i]; 458 459 return (0); 460 } 461 462 /* 463 * Return the address that would map the given device at the given 464 * offset, allowing for the given protection, or return -1 for error. 465 */ 466 int 467 cgtwommap(dev, off, prot) 468 dev_t dev; 469 int off, prot; 470 { 471 register struct cgtwo_softc *sc = cgtwocd.cd_devs[minor(dev)]; 472 473 if (off & PGOFSET) 474 panic("cgtwommap"); 475 476 if ((unsigned)off >= sc->sc_fb.fb_type.fb_size) 477 return (-1); 478 479 return ((int)sc->sc_phys + off + PMAP_VME16 + PMAP_NC); 480 } 481
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