cgtwo.c revision 1.7
1 /* $NetBSD: cgtwo.c,v 1.7 1995/11/29 01:45:44 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 caddr_t sc_phys; /* display RAM (phys addr) */ 80 volatile struct cg2statusreg *sc_reg; /* CG2 control registers */ 81 volatile u_short *sc_cmap; 82 #define sc_redmap(sc) ((sc)->sc_cmap) 83 #define sc_greenmap(sc) ((sc)->sc_cmap + CG2_CMSIZE) 84 #define sc_bluemap(sc) ((sc)->sc_cmap + 2 * CG2_CMSIZE) 85 }; 86 87 /* autoconfiguration driver */ 88 static void cgtwoattach(struct device *, struct device *, void *); 89 static int cgtwomatch(struct device *, void *, void *); 90 int cgtwoopen __P((dev_t, int, int, struct proc *)); 91 int cgtwoclose __P((dev_t, int, int, struct proc *)); 92 int cgtwoioctl __P((dev_t, u_long, caddr_t, int, struct proc *)); 93 int cgtwommap __P((dev_t, int, int)); 94 static void cgtwounblank(struct device *); 95 96 struct cfdriver cgtwocd = { 97 NULL, "cgtwo", cgtwomatch, cgtwoattach, 98 DV_DULL, sizeof(struct cgtwo_softc) 99 }; 100 101 /* frame buffer generic driver */ 102 static struct fbdriver cgtwofbdriver = { 103 cgtwounblank, cgtwoopen, cgtwoclose, cgtwoioctl, cgtwommap 104 }; 105 106 extern int fbnode; 107 extern struct tty *fbconstty; 108 extern int nullop(); 109 static int cgtwo_cnputc(); 110 111 static void cgtwoloadcmap __P((struct cgtwo_softc *, int, int)); 112 113 /* 114 * Match a cgtwo. 115 */ 116 int 117 cgtwomatch(parent, vcf, aux) 118 struct device *parent; 119 void *vcf, *aux; 120 { 121 struct cfdata *cf = vcf; 122 struct confargs *ca = aux; 123 struct romaux *ra = &ca->ca_ra; 124 int probe; 125 caddr_t tmp; 126 127 if (ca->ca_bustype != BUS_VME16) 128 return (0); 129 130 if (strcmp(cf->cf_driver->cd_name, ra->ra_name)) 131 return (0); 132 133 #if defined(SUN4) 134 if (cputyp != CPU_SUN4 || cf->cf_unit != 0) 135 return (0); 136 137 /* XXX - Must do our own mapping at CG2_CTLREG_OFF */ 138 bus_untmp(); 139 tmp = (caddr_t)bus_tmp(ra->ra_paddr + CG2_CTLREG_OFF, ca->ca_bustype); 140 if (probeget(tmp, 2) != -1) 141 return 1; 142 #endif 143 return 0; 144 } 145 146 /* 147 * Attach a display. We need to notice if it is the console, too. 148 */ 149 void 150 cgtwoattach(parent, self, args) 151 struct device *parent, *self; 152 void *args; 153 { 154 register struct cgtwo_softc *sc = (struct cgtwo_softc *)self; 155 register struct confargs *ca = args; 156 register int node, i; 157 register struct cgtwo_all *p; 158 int isconsole; 159 char *nam; 160 161 sc->sc_fb.fb_driver = &cgtwofbdriver; 162 sc->sc_fb.fb_device = &sc->sc_dev; 163 sc->sc_fb.fb_type.fb_type = FBTYPE_SUN2COLOR; 164 sc->sc_fb.fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 165 166 switch (ca->ca_bustype) { 167 case BUS_VME16: 168 node = 0; 169 nam = "cgtwo"; 170 break; 171 172 default: 173 panic("cgtwoattach: impossible bustype"); 174 /* NOTREACHED */ 175 } 176 177 sc->sc_fb.fb_type.fb_depth = 8; 178 fb_setsize(&sc->sc_fb, sc->sc_fb.fb_type.fb_depth, 179 1152, 900, node, ca->ca_bustype); 180 181 sc->sc_fb.fb_type.fb_cmsize = 256; 182 sc->sc_fb.fb_type.fb_size = roundup(CG2_MAPPED_SIZE, NBPG); 183 printf(": %s, %d x %d", nam, 184 sc->sc_fb.fb_type.fb_width, sc->sc_fb.fb_type.fb_height); 185 186 /* 187 * When the ROM has mapped in a cgtwo display, the address 188 * maps only the video RAM, so in any case we have to map the 189 * registers ourselves. We only need the video RAM if we are 190 * going to print characters via rconsole. 191 */ 192 #if defined(SUN4) 193 if (cputyp == CPU_SUN4) { 194 struct eeprom *eep = (struct eeprom *)eeprom_va; 195 /* 196 * Assume this is the console if there's no eeprom info 197 * to be found. 198 */ 199 if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) 200 isconsole = (fbconstty != NULL); 201 else 202 isconsole = 0; 203 } 204 #endif 205 sc->sc_phys = (caddr_t)ca->ca_ra.ra_paddr; 206 if ((sc->sc_fb.fb_pixels = ca->ca_ra.ra_vaddr) == NULL && isconsole) { 207 /* this probably cannot happen, but what the heck */ 208 sc->sc_fb.fb_pixels = mapiodev(sc->sc_phys + CG2_PIXMAP_OFF, 209 CG2_PIXMAP_SIZE, 210 ca->ca_bustype); 211 } 212 #ifndef offsetof 213 #define offsetof(type, member) ((size_t)(&((type *)0)->member)) 214 #endif 215 216 sc->sc_reg = (volatile struct cg2statusreg *) 217 mapiodev((caddr_t)sc->sc_phys + 218 CG2_ROPMEM_OFF + offsetof(struct cg2fb, status.reg), 219 sizeof(struct cg2statusreg), ca->ca_bustype); 220 221 sc->sc_cmap = (volatile u_short *) 222 mapiodev((caddr_t)sc->sc_phys + 223 CG2_ROPMEM_OFF + offsetof(struct cg2fb, redmap[0]), 224 3 * CG2_CMSIZE, ca->ca_bustype); 225 226 if (isconsole) { 227 printf(" (console)\n"); 228 #ifdef RASTERCONSOLE 229 fbrcons_init(&sc->sc_fb); 230 #endif 231 } else 232 printf("\n"); 233 if (node == fbnode || cputyp == CPU_SUN4) 234 fb_attach(&sc->sc_fb, isconsole); 235 } 236 237 int 238 cgtwoopen(dev, flags, mode, p) 239 dev_t dev; 240 int flags, mode; 241 struct proc *p; 242 { 243 int unit = minor(dev); 244 245 if (unit >= cgtwocd.cd_ndevs || cgtwocd.cd_devs[unit] == NULL) 246 return (ENXIO); 247 return (0); 248 } 249 250 int 251 cgtwoclose(dev, flags, mode, p) 252 dev_t dev; 253 int flags, mode; 254 struct proc *p; 255 { 256 257 return (0); 258 } 259 260 int 261 cgtwoioctl(dev, cmd, data, flags, p) 262 dev_t dev; 263 u_long cmd; 264 register caddr_t data; 265 int flags; 266 struct proc *p; 267 { 268 register struct cgtwo_softc *sc = cgtwocd.cd_devs[minor(dev)]; 269 register struct fbgattr *fba; 270 int error; 271 272 switch (cmd) { 273 274 case FBIOGTYPE: 275 *(struct fbtype *)data = sc->sc_fb.fb_type; 276 break; 277 278 case FBIOGATTR: 279 fba = (struct fbgattr *)data; 280 fba->real_type = sc->sc_fb.fb_type.fb_type; 281 fba->owner = 0; /* XXX ??? */ 282 fba->fbtype = sc->sc_fb.fb_type; 283 fba->sattr.flags = 0; 284 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 285 fba->sattr.dev_specific[0] = -1; 286 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 287 fba->emu_types[1] = -1; 288 break; 289 290 case FBIOGETCMAP: 291 return cgtwogetcmap(sc, data); 292 293 case FBIOPUTCMAP: 294 return cgtwoputcmap(sc, data); 295 296 case FBIOGVIDEO: 297 *(int *)data = sc->sc_reg->video_enab; 298 break; 299 300 case FBIOSVIDEO: 301 sc->sc_reg->video_enab = (*(int*)data) & 1; 302 break; 303 304 default: 305 return (ENOTTY); 306 } 307 return (0); 308 } 309 310 /* 311 * Undo the effect of an FBIOSVIDEO that turns the video off. 312 */ 313 static void 314 cgtwounblank(dev) 315 struct device *dev; 316 { 317 struct cgtwo_softc *sc = (struct cgtwo_softc *)dev; 318 sc->sc_reg->video_enab = 1; 319 } 320 321 /* 322 */ 323 int 324 cgtwogetcmap(sc, cmap) 325 register struct cgtwo_softc *sc; 326 register struct fbcmap *cmap; 327 { 328 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 329 int error, start, count, ecount; 330 register u_int i; 331 register volatile u_short *p; 332 333 start = cmap->index; 334 count = cmap->count; 335 ecount = start + count; 336 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 337 return (EINVAL); 338 339 /* XXX - Wait for retrace? */ 340 341 /* Copy hardware to local arrays. */ 342 p = &sc_redmap(sc)[start]; 343 for (i = start; i < ecount; i++) 344 red[i] = *p++; 345 p = &sc_greenmap(sc)[start]; 346 for (i = start; i < ecount; i++) 347 green[i] = *p++; 348 p = &sc_bluemap(sc)[start]; 349 for (i = start; i < ecount; i++) 350 blue[i] = *p++; 351 352 /* Copy local arrays to user space. */ 353 if ((error = copyout(red + start, cmap->red, count)) != 0) 354 return (error); 355 if ((error = copyout(green + start, cmap->green, count)) != 0) 356 return (error); 357 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 358 return (error); 359 360 return (0); 361 } 362 363 /* 364 */ 365 int 366 cgtwoputcmap(sc, cmap) 367 register struct cgtwo_softc *sc; 368 register struct fbcmap *cmap; 369 { 370 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 371 int error, start, count, ecount; 372 register u_int i; 373 register volatile u_short *p; 374 375 start = cmap->index; 376 count = cmap->count; 377 ecount = start + count; 378 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 379 return (EINVAL); 380 381 /* Copy from user space to local arrays. */ 382 if ((error = copyin(cmap->red, red + start, count)) != 0) 383 return (error); 384 if ((error = copyin(cmap->green, green + start, count)) != 0) 385 return (error); 386 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 387 return (error); 388 389 /* XXX - Wait for retrace? */ 390 391 /* Copy from local arrays to hardware. */ 392 p = &sc_redmap(sc)[start]; 393 for (i = start; i < ecount; i++) 394 *p++ = red[i]; 395 p = &sc_greenmap(sc)[start]; 396 for (i = start; i < ecount; i++) 397 *p++ = green[i]; 398 p = &sc_bluemap(sc)[start]; 399 for (i = start; i < ecount; i++) 400 *p++ = blue[i]; 401 402 return (0); 403 } 404 405 /* 406 * Return the address that would map the given device at the given 407 * offset, allowing for the given protection, or return -1 for error. 408 */ 409 int 410 cgtwommap(dev, off, prot) 411 dev_t dev; 412 int off, prot; 413 { 414 register struct cgtwo_softc *sc = cgtwocd.cd_devs[minor(dev)]; 415 416 if (off & PGOFSET) 417 panic("cgtwommap"); 418 419 if ((unsigned)off >= sc->sc_fb.fb_type.fb_size) 420 return (-1); 421 422 return ((int)sc->sc_phys + off + PMAP_VME32 + PMAP_NC); 423 } 424
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