cgtwo.c revision 1.9
1 /* $NetBSD: cgtwo.c,v 1.9 1996/02/25 21:46:08 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 75 /* per-display variables */ 76 struct cgtwo_softc { 77 struct device sc_dev; /* base device */ 78 struct fbdevice sc_fb; /* frame buffer device */ 79 struct rom_reg sc_phys; /* display RAM (phys addr) */ 80 int sc_bustype; /* type of bus we live on */ 81 volatile struct cg2statusreg *sc_reg; /* CG2 control registers */ 82 volatile u_short *sc_cmap; 83 #define sc_redmap(sc) ((sc)->sc_cmap) 84 #define sc_greenmap(sc) ((sc)->sc_cmap + CG2_CMSIZE) 85 #define sc_bluemap(sc) ((sc)->sc_cmap + 2 * CG2_CMSIZE) 86 }; 87 88 /* autoconfiguration driver */ 89 static void cgtwoattach(struct device *, struct device *, void *); 90 static int cgtwomatch(struct device *, void *, void *); 91 int cgtwoopen __P((dev_t, int, int, struct proc *)); 92 int cgtwoclose __P((dev_t, int, int, struct proc *)); 93 int cgtwoioctl __P((dev_t, u_long, caddr_t, int, struct proc *)); 94 int cgtwommap __P((dev_t, int, int)); 95 static void cgtwounblank(struct device *); 96 97 struct cfdriver cgtwocd = { 98 NULL, "cgtwo", cgtwomatch, cgtwoattach, 99 DV_DULL, sizeof(struct cgtwo_softc) 100 }; 101 102 /* frame buffer generic driver */ 103 static struct fbdriver cgtwofbdriver = { 104 cgtwounblank, cgtwoopen, cgtwoclose, cgtwoioctl, cgtwommap 105 }; 106 107 extern int fbnode; 108 extern struct tty *fbconstty; 109 extern int nullop(); 110 static int cgtwo_cnputc(); 111 112 static void cgtwoloadcmap __P((struct cgtwo_softc *, int, int)); 113 114 /* 115 * Match a cgtwo. 116 */ 117 int 118 cgtwomatch(parent, vcf, aux) 119 struct device *parent; 120 void *vcf, *aux; 121 { 122 struct cfdata *cf = vcf; 123 struct confargs *ca = aux; 124 struct romaux *ra = &ca->ca_ra; 125 int probe; 126 caddr_t tmp; 127 128 if (ca->ca_bustype != BUS_VME16) 129 return (0); 130 131 if (strcmp(cf->cf_driver->cd_name, ra->ra_name)) 132 return (0); 133 134 #if defined(SUN4) 135 if (!CPU_ISSUN4 || cf->cf_unit != 0) 136 return (0); 137 138 /* XXX - Must do our own mapping at CG2_CTLREG_OFF */ 139 bus_untmp(); 140 tmp = (caddr_t)bus_tmp(ra->ra_paddr + CG2_CTLREG_OFF, ca->ca_bustype); 141 if (probeget(tmp, 2) != -1) 142 return 1; 143 #endif 144 return 0; 145 } 146 147 /* 148 * Attach a display. We need to notice if it is the console, too. 149 */ 150 void 151 cgtwoattach(parent, self, args) 152 struct device *parent, *self; 153 void *args; 154 { 155 register struct cgtwo_softc *sc = (struct cgtwo_softc *)self; 156 register struct confargs *ca = args; 157 register int node, i; 158 register struct cgtwo_all *p; 159 int isconsole; 160 char *nam; 161 162 sc->sc_fb.fb_driver = &cgtwofbdriver; 163 sc->sc_fb.fb_device = &sc->sc_dev; 164 sc->sc_fb.fb_type.fb_type = FBTYPE_SUN2COLOR; 165 sc->sc_fb.fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 166 167 switch (ca->ca_bustype) { 168 case BUS_VME16: 169 node = 0; 170 nam = "cgtwo"; 171 break; 172 173 default: 174 panic("cgtwoattach: impossible bustype"); 175 /* NOTREACHED */ 176 } 177 178 sc->sc_fb.fb_type.fb_depth = 8; 179 fb_setsize(&sc->sc_fb, sc->sc_fb.fb_type.fb_depth, 180 1152, 900, node, ca->ca_bustype); 181 182 sc->sc_fb.fb_type.fb_cmsize = 256; 183 sc->sc_fb.fb_type.fb_size = roundup(CG2_MAPPED_SIZE, NBPG); 184 printf(": %s, %d x %d", nam, 185 sc->sc_fb.fb_type.fb_width, sc->sc_fb.fb_type.fb_height); 186 187 /* 188 * When the ROM has mapped in a cgtwo display, the address 189 * maps only the video RAM, so in any case we have to map the 190 * registers ourselves. We only need the video RAM if we are 191 * going to print characters via rconsole. 192 */ 193 #if defined(SUN4) 194 if (CPU_ISSUN4) { 195 struct eeprom *eep = (struct eeprom *)eeprom_va; 196 /* 197 * Assume this is the console if there's no eeprom info 198 * to be found. 199 */ 200 if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) 201 isconsole = (fbconstty != NULL); 202 else 203 isconsole = 0; 204 } 205 #endif 206 sc->sc_phys = ca->ca_ra.ra_reg[0]; 207 sc->sc_bustype = ca->ca_bustype; 208 209 if ((sc->sc_fb.fb_pixels = ca->ca_ra.ra_vaddr) == NULL && isconsole) { 210 /* this probably cannot happen, but what the heck */ 211 sc->sc_fb.fb_pixels = mapiodev(ca->ca_ra.ra_reg, CG2_PIXMAP_OFF, 212 CG2_PIXMAP_SIZE, 213 ca->ca_bustype); 214 } 215 #ifndef offsetof 216 #define offsetof(type, member) ((size_t)(&((type *)0)->member)) 217 #endif 218 219 sc->sc_reg = (volatile struct cg2statusreg *) 220 mapiodev(ca->ca_ra.ra_reg, 221 CG2_ROPMEM_OFF + offsetof(struct cg2fb, status.reg), 222 sizeof(struct cg2statusreg), ca->ca_bustype); 223 224 sc->sc_cmap = (volatile u_short *) 225 mapiodev(ca->ca_ra.ra_reg, 226 CG2_ROPMEM_OFF + offsetof(struct cg2fb, redmap[0]), 227 3 * CG2_CMSIZE, ca->ca_bustype); 228 229 if (isconsole) { 230 printf(" (console)\n"); 231 #ifdef RASTERCONSOLE 232 fbrcons_init(&sc->sc_fb); 233 #endif 234 } else 235 printf("\n"); 236 237 if (node == fbnode || CPU_ISSUN4) 238 fb_attach(&sc->sc_fb, isconsole); 239 } 240 241 int 242 cgtwoopen(dev, flags, mode, p) 243 dev_t dev; 244 int flags, mode; 245 struct proc *p; 246 { 247 int unit = minor(dev); 248 249 if (unit >= cgtwocd.cd_ndevs || cgtwocd.cd_devs[unit] == NULL) 250 return (ENXIO); 251 return (0); 252 } 253 254 int 255 cgtwoclose(dev, flags, mode, p) 256 dev_t dev; 257 int flags, mode; 258 struct proc *p; 259 { 260 261 return (0); 262 } 263 264 int 265 cgtwoioctl(dev, cmd, data, flags, p) 266 dev_t dev; 267 u_long cmd; 268 register caddr_t data; 269 int flags; 270 struct proc *p; 271 { 272 register struct cgtwo_softc *sc = cgtwocd.cd_devs[minor(dev)]; 273 register struct fbgattr *fba; 274 int error; 275 276 switch (cmd) { 277 278 case FBIOGTYPE: 279 *(struct fbtype *)data = sc->sc_fb.fb_type; 280 break; 281 282 case FBIOGATTR: 283 fba = (struct fbgattr *)data; 284 fba->real_type = sc->sc_fb.fb_type.fb_type; 285 fba->owner = 0; /* XXX ??? */ 286 fba->fbtype = sc->sc_fb.fb_type; 287 fba->sattr.flags = 0; 288 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 289 fba->sattr.dev_specific[0] = -1; 290 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 291 fba->emu_types[1] = -1; 292 break; 293 294 case FBIOGETCMAP: 295 return cgtwogetcmap(sc, data); 296 297 case FBIOPUTCMAP: 298 return cgtwoputcmap(sc, data); 299 300 case FBIOGVIDEO: 301 *(int *)data = sc->sc_reg->video_enab; 302 break; 303 304 case FBIOSVIDEO: 305 sc->sc_reg->video_enab = (*(int*)data) & 1; 306 break; 307 308 default: 309 return (ENOTTY); 310 } 311 return (0); 312 } 313 314 /* 315 * Undo the effect of an FBIOSVIDEO that turns the video off. 316 */ 317 static void 318 cgtwounblank(dev) 319 struct device *dev; 320 { 321 struct cgtwo_softc *sc = (struct cgtwo_softc *)dev; 322 sc->sc_reg->video_enab = 1; 323 } 324 325 /* 326 */ 327 int 328 cgtwogetcmap(sc, cmap) 329 register struct cgtwo_softc *sc; 330 register struct fbcmap *cmap; 331 { 332 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 333 int error, start, count, ecount; 334 register u_int i; 335 register volatile u_short *p; 336 337 start = cmap->index; 338 count = cmap->count; 339 ecount = start + count; 340 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 341 return (EINVAL); 342 343 /* XXX - Wait for retrace? */ 344 345 /* Copy hardware to local arrays. */ 346 p = &sc_redmap(sc)[start]; 347 for (i = start; i < ecount; i++) 348 red[i] = *p++; 349 p = &sc_greenmap(sc)[start]; 350 for (i = start; i < ecount; i++) 351 green[i] = *p++; 352 p = &sc_bluemap(sc)[start]; 353 for (i = start; i < ecount; i++) 354 blue[i] = *p++; 355 356 /* Copy local arrays to user space. */ 357 if ((error = copyout(red + start, cmap->red, count)) != 0) 358 return (error); 359 if ((error = copyout(green + start, cmap->green, count)) != 0) 360 return (error); 361 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 362 return (error); 363 364 return (0); 365 } 366 367 /* 368 */ 369 int 370 cgtwoputcmap(sc, cmap) 371 register struct cgtwo_softc *sc; 372 register struct fbcmap *cmap; 373 { 374 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 375 int error, start, count, ecount; 376 register u_int i; 377 register volatile u_short *p; 378 379 start = cmap->index; 380 count = cmap->count; 381 ecount = start + count; 382 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 383 return (EINVAL); 384 385 /* Copy from user space to local arrays. */ 386 if ((error = copyin(cmap->red, red + start, count)) != 0) 387 return (error); 388 if ((error = copyin(cmap->green, green + start, count)) != 0) 389 return (error); 390 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 391 return (error); 392 393 /* XXX - Wait for retrace? */ 394 395 /* Copy from local arrays to hardware. */ 396 p = &sc_redmap(sc)[start]; 397 for (i = start; i < ecount; i++) 398 *p++ = red[i]; 399 p = &sc_greenmap(sc)[start]; 400 for (i = start; i < ecount; i++) 401 *p++ = green[i]; 402 p = &sc_bluemap(sc)[start]; 403 for (i = start; i < ecount; i++) 404 *p++ = blue[i]; 405 406 return (0); 407 } 408 409 /* 410 * Return the address that would map the given device at the given 411 * offset, allowing for the given protection, or return -1 for error. 412 */ 413 int 414 cgtwommap(dev, off, prot) 415 dev_t dev; 416 int off, prot; 417 { 418 register struct cgtwo_softc *sc = cgtwocd.cd_devs[minor(dev)]; 419 420 if (off & PGOFSET) 421 panic("cgtwommap"); 422 423 if ((unsigned)off >= sc->sc_fb.fb_type.fb_size) 424 return (-1); 425 426 return (REG2PHYS(&sc->sc_phys, off, PMAP_VME32/*sc->sc_bustype*/) | PMAP_NC); 427 } 428
Indexes created Thu Sep 25 08:09:54 GMT 2025