cgfour.c revision 1.36
1 /* $NetBSD: cgfour.c,v 1.36 2003/08/24 17:31:59 uwe Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1992, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * This software was developed by the Computer Systems Engineering group 44 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 45 * contributed to Berkeley. 46 * 47 * All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the University of 50 * California, Lawrence Berkeley Laboratory. 51 * 52 * Redistribution and use in source and binary forms, with or without 53 * modification, are permitted provided that the following conditions 54 * are met: 55 * 1. Redistributions of source code must retain the above copyright 56 * notice, this list of conditions and the following disclaimer. 57 * 2. Redistributions in binary form must reproduce the above copyright 58 * notice, this list of conditions and the following disclaimer in the 59 * documentation and/or other materials provided with the distribution. 60 * 3. Neither the name of the University nor the names of its contributors 61 * may be used to endorse or promote products derived from this software 62 * without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 65 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 66 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 67 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 68 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 69 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 70 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 72 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 73 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 74 * SUCH DAMAGE. 75 * 76 * from @(#)cgthree.c 8.2 (Berkeley) 10/30/93 77 */ 78 79 /* 80 * Copyright (c) 1995 Theo de Raadt. All rights reserved. 81 * 82 * All advertising materials mentioning features or use of this software 83 * must display the following acknowledgement: 84 * This product includes software developed by Theo de Raadt. 85 * 86 * This software was developed by the Computer Systems Engineering group 87 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 88 * contributed to Berkeley. 89 * 90 * All advertising materials mentioning features or use of this software 91 * must display the following acknowledgement: 92 * This product includes software developed by the University of 93 * California, Lawrence Berkeley Laboratory. 94 * 95 * Redistribution and use in source and binary forms, with or without 96 * modification, are permitted provided that the following conditions 97 * are met: 98 * 1. Redistributions of source code must retain the above copyright 99 * notice, this list of conditions and the following disclaimer. 100 * 2. Redistributions in binary form must reproduce the above copyright 101 * notice, this list of conditions and the following disclaimer in the 102 * documentation and/or other materials provided with the distribution. 103 * 3. All advertising materials mentioning features or use of this software 104 * must display the following acknowledgement: 105 * This product includes software developed by the University of 106 * California, Berkeley and its contributors. 107 * 4. Neither the name of the University nor the names of its contributors 108 * may be used to endorse or promote products derived from this software 109 * without specific prior written permission. 110 * 111 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 112 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 113 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 114 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 115 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 116 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 117 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 118 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 119 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 120 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 121 * SUCH DAMAGE. 122 * 123 * from @(#)cgthree.c 8.2 (Berkeley) 10/30/93 124 */ 125 126 /* 127 * color display (cgfour) driver. 128 * 129 * Does not handle interrupts, even though they can occur. 130 * 131 * XXX should defer colormap updates to vertical retrace interrupts 132 */ 133 134 #include <sys/cdefs.h> 135 __KERNEL_RCSID(0, "$NetBSD: cgfour.c,v 1.36 2003/08/24 17:31:59 uwe Exp $"); 136 137 #include "opt_rcons.h" 138 139 #include <sys/param.h> 140 #include <sys/systm.h> 141 #include <sys/buf.h> 142 #include <sys/device.h> 143 #include <sys/ioctl.h> 144 #include <sys/malloc.h> 145 #include <sys/mman.h> 146 #include <sys/tty.h> 147 #include <sys/conf.h> 148 149 #include <machine/autoconf.h> 150 #include <machine/eeprom.h> 151 152 #include <dev/sun/fbio.h> 153 #include <dev/sun/fbvar.h> 154 #include <dev/sun/btreg.h> 155 #include <dev/sun/btvar.h> 156 #include <dev/sun/pfourreg.h> 157 158 /* per-display variables */ 159 struct cgfour_softc { 160 struct device sc_dev; /* base device */ 161 struct fbdevice sc_fb; /* frame buffer device */ 162 bus_space_tag_t sc_bustag; 163 bus_addr_t sc_paddr; /* phys address for device mmap() */ 164 165 volatile struct fbcontrol *sc_fbc; /* Brooktree registers */ 166 union bt_cmap sc_cmap; /* Brooktree color map */ 167 }; 168 169 /* autoconfiguration driver */ 170 static void cgfourattach __P((struct device *, struct device *, void *)); 171 static int cgfourmatch __P((struct device *, struct cfdata *, void *)); 172 173 #if defined(SUN4) 174 static void cgfourunblank __P((struct device *)); 175 #endif 176 177 static int cg4_pfour_probe __P((void *, void *)); 178 179 CFATTACH_DECL(cgfour, sizeof(struct cgfour_softc), 180 cgfourmatch, cgfourattach, NULL, NULL); 181 182 extern struct cfdriver cgfour_cd; 183 184 dev_type_open(cgfouropen); 185 dev_type_ioctl(cgfourioctl); 186 dev_type_mmap(cgfourmmap); 187 188 const struct cdevsw cgfour_cdevsw = { 189 cgfouropen, nullclose, noread, nowrite, cgfourioctl, 190 nostop, notty, nopoll, cgfourmmap, nokqfilter, 191 }; 192 193 #if defined(SUN4) 194 /* frame buffer generic driver */ 195 static struct fbdriver cgfourfbdriver = { 196 cgfourunblank, cgfouropen, nullclose, cgfourioctl, nopoll, 197 cgfourmmap, nokqfilter 198 }; 199 200 static void cgfourloadcmap __P((struct cgfour_softc *, int, int)); 201 static int cgfour_get_video __P((struct cgfour_softc *)); 202 static void cgfour_set_video __P((struct cgfour_softc *, int)); 203 #endif 204 205 /* 206 * Match a cgfour. 207 */ 208 int 209 cgfourmatch(parent, cf, aux) 210 struct device *parent; 211 struct cfdata *cf; 212 void *aux; 213 { 214 union obio_attach_args *uoba = aux; 215 struct obio4_attach_args *oba; 216 217 if (uoba->uoba_isobio4 == 0) 218 return (0); 219 220 oba = &uoba->uoba_oba4; 221 return (bus_space_probe(oba->oba_bustag, oba->oba_paddr, 222 4, /* probe size */ 223 0, /* offset */ 224 0, /* flags */ 225 cg4_pfour_probe, NULL)); 226 } 227 228 int 229 cg4_pfour_probe(vaddr, arg) 230 void *vaddr; 231 void *arg; 232 { 233 234 return (fb_pfour_id(vaddr) == PFOUR_ID_COLOR8P1); 235 } 236 237 /* 238 * Attach a display. We need to notice if it is the console, too. 239 */ 240 void 241 cgfourattach(parent, self, aux) 242 struct device *parent, *self; 243 void *aux; 244 { 245 #if defined(SUN4) 246 struct cgfour_softc *sc = (struct cgfour_softc *)self; 247 union obio_attach_args *uoba = aux; 248 struct obio4_attach_args *oba = &uoba->uoba_oba4; 249 bus_space_handle_t bh; 250 volatile struct bt_regs *bt; 251 struct fbdevice *fb = &sc->sc_fb; 252 int ramsize, i, isconsole; 253 254 sc->sc_bustag = oba->oba_bustag; 255 sc->sc_paddr = (bus_addr_t)oba->oba_paddr; 256 257 /* Map the pfour register. */ 258 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 259 sizeof(u_int32_t), 260 BUS_SPACE_MAP_LINEAR, 261 &bh) != 0) { 262 printf("%s: cannot map control registers\n", self->dv_xname); 263 return; 264 } 265 fb->fb_pfour = (volatile u_int32_t *)bh; 266 267 fb->fb_driver = &cgfourfbdriver; 268 fb->fb_device = &sc->sc_dev; 269 fb->fb_type.fb_type = FBTYPE_SUN4COLOR; 270 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags & FB_USERMASK; 271 fb->fb_flags |= FB_PFOUR; 272 273 ramsize = PFOUR_COLOR_OFF_END - PFOUR_COLOR_OFF_OVERLAY; 274 275 fb->fb_type.fb_depth = 8; 276 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 277 278 fb->fb_type.fb_cmsize = 256; 279 fb->fb_type.fb_size = ramsize; 280 printf(": cgfour/p4, %d x %d", 281 fb->fb_type.fb_width, fb->fb_type.fb_height); 282 283 isconsole = 0; 284 285 if (CPU_ISSUN4) { 286 struct eeprom *eep = (struct eeprom *)eeprom_va; 287 288 /* 289 * Assume this is the console if there's no eeprom info 290 * to be found. 291 */ 292 if (eep == NULL || eep->eeConsole == EE_CONS_P4OPT) 293 isconsole = fb_is_console(0); 294 } 295 296 #if 0 297 /* 298 * We don't do any of the console handling here. Instead, 299 * we let the bwtwo driver pick up the overlay plane and 300 * use it instead. Rconsole should have better performance 301 * with the 1-bit depth. 302 * -- Jason R. Thorpe <thorpej (at) NetBSD.ORG> 303 */ 304 305 /* 306 * When the ROM has mapped in a cgfour display, the address 307 * maps only the video RAM, so in any case we have to map the 308 * registers ourselves. We only need the video RAM if we are 309 * going to print characters via rconsole. 310 */ 311 312 if (isconsole) { 313 /* XXX this is kind of a waste */ 314 fb->fb_pixels = mapiodev(ca->ca_ra.ra_reg, 315 PFOUR_COLOR_OFF_OVERLAY, ramsize); 316 } 317 #endif 318 319 /* Map the Brooktree. */ 320 if (bus_space_map(oba->oba_bustag, 321 oba->oba_paddr + PFOUR_COLOR_OFF_CMAP, 322 sizeof(struct fbcontrol), 323 BUS_SPACE_MAP_LINEAR, 324 &bh) != 0) { 325 printf("%s: cannot map control registers\n", self->dv_xname); 326 return; 327 } 328 sc->sc_fbc = (volatile struct fbcontrol *)bh; 329 330 /* grab initial (current) color map */ 331 bt = &sc->sc_fbc->fbc_dac; 332 bt->bt_addr = 0; 333 for (i = 0; i < 256 * 3 / 4; i++) 334 ((char *)&sc->sc_cmap)[i] = bt->bt_cmap >> 24; 335 336 BT_INIT(bt, 24); 337 338 #if 0 /* See above. */ 339 if (isconsole) { 340 printf(" (console)\n"); 341 #if defined(RASTERCONSOLE) && 0 /* XXX been told it doesn't work well. */ 342 fbrcons_init(fb); 343 #endif 344 } else 345 #endif /* 0 */ 346 printf("\n"); 347 348 /* 349 * Even though we're not using rconsole, we'd still like 350 * to notice if we're the console framebuffer. 351 */ 352 fb_attach(fb, isconsole); 353 #endif 354 } 355 356 int 357 cgfouropen(dev, flags, mode, p) 358 dev_t dev; 359 int flags, mode; 360 struct proc *p; 361 { 362 int unit = minor(dev); 363 364 if (unit >= cgfour_cd.cd_ndevs || cgfour_cd.cd_devs[unit] == NULL) 365 return (ENXIO); 366 return (0); 367 } 368 369 int 370 cgfourioctl(dev, cmd, data, flags, p) 371 dev_t dev; 372 u_long cmd; 373 caddr_t data; 374 int flags; 375 struct proc *p; 376 { 377 #if defined(SUN4) 378 struct cgfour_softc *sc = cgfour_cd.cd_devs[minor(dev)]; 379 struct fbgattr *fba; 380 int error; 381 382 switch (cmd) { 383 384 case FBIOGTYPE: 385 *(struct fbtype *)data = sc->sc_fb.fb_type; 386 break; 387 388 case FBIOGATTR: 389 fba = (struct fbgattr *)data; 390 fba->real_type = sc->sc_fb.fb_type.fb_type; 391 fba->owner = 0; /* XXX ??? */ 392 fba->fbtype = sc->sc_fb.fb_type; 393 fba->sattr.flags = 0; 394 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 395 fba->sattr.dev_specific[0] = -1; 396 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 397 fba->emu_types[1] = -1; 398 break; 399 400 case FBIOGETCMAP: 401 #define p ((struct fbcmap *)data) 402 return (bt_getcmap(p, &sc->sc_cmap, 256, 1)); 403 404 case FBIOPUTCMAP: 405 /* copy to software map */ 406 error = bt_putcmap(p, &sc->sc_cmap, 256, 1); 407 if (error) 408 return (error); 409 /* now blast them into the chip */ 410 /* XXX should use retrace interrupt */ 411 cgfourloadcmap(sc, p->index, p->count); 412 #undef p 413 break; 414 415 case FBIOGVIDEO: 416 *(int *)data = cgfour_get_video(sc); 417 break; 418 419 case FBIOSVIDEO: 420 cgfour_set_video(sc, *(int *)data); 421 break; 422 423 default: 424 return (ENOTTY); 425 } 426 #endif 427 return (0); 428 } 429 430 /* 431 * Return the address that would map the given device at the given 432 * offset, allowing for the given protection, or return -1 for error. 433 * 434 * the cg4 maps it's overlay plane for 128K, followed by the enable 435 * plane for 128K, followed by the colour plane (for as much colour 436 * as their is.) 437 * 438 * As well, mapping at an offset of 0x04000000 causes the cg4 to map 439 * only it's colour plane, at 0. 440 */ 441 paddr_t 442 cgfourmmap(dev, off, prot) 443 dev_t dev; 444 off_t off; 445 int prot; 446 { 447 struct cgfour_softc *sc = cgfour_cd.cd_devs[minor(dev)]; 448 off_t poff; 449 450 #define START_ENABLE (128*1024) 451 #define START_COLOR ((128*1024) + (128*1024)) 452 #define COLOR_SIZE (sc->sc_fb.fb_type.fb_width * \ 453 sc->sc_fb.fb_type.fb_height) 454 #define END_COLOR (START_COLOR + COLOR_SIZE) 455 #define NOOVERLAY (0x04000000) 456 457 if (off & PGOFSET) 458 panic("cgfourmap"); 459 460 if (off < 0) 461 return (-1); 462 else if ((u_int)off >= NOOVERLAY) { 463 off -= NOOVERLAY; 464 465 /* 466 * X11 maps a huge chunk of the frame buffer; far more than 467 * there really is. We compensate by double-mapping the 468 * first page for as many other pages as it wants 469 */ 470 while ((u_int)off >= COLOR_SIZE) 471 off -= COLOR_SIZE; /* XXX thorpej ??? */ 472 473 poff = off + PFOUR_COLOR_OFF_COLOR; 474 } else if ((u_int)off < START_ENABLE) { 475 /* 476 * in overlay plane 477 */ 478 poff = PFOUR_COLOR_OFF_OVERLAY + off; 479 } else if ((u_int)off < START_COLOR) { 480 /* 481 * in enable plane 482 */ 483 poff = (off - START_ENABLE) + PFOUR_COLOR_OFF_ENABLE; 484 } else if ((u_int)off < sc->sc_fb.fb_type.fb_size) { 485 /* 486 * in colour plane 487 */ 488 poff = (off - START_COLOR) + PFOUR_COLOR_OFF_COLOR; 489 } else 490 return (-1); 491 492 return (bus_space_mmap(sc->sc_bustag, 493 sc->sc_paddr, poff, 494 prot, BUS_SPACE_MAP_LINEAR)); 495 } 496 497 #if defined(SUN4) 498 /* 499 * Undo the effect of an FBIOSVIDEO that turns the video off. 500 */ 501 static void 502 cgfourunblank(dev) 503 struct device *dev; 504 { 505 506 cgfour_set_video((struct cgfour_softc *)dev, 1); 507 } 508 509 static int 510 cgfour_get_video(sc) 511 struct cgfour_softc *sc; 512 { 513 514 return (fb_pfour_get_video(&sc->sc_fb)); 515 } 516 517 static void 518 cgfour_set_video(sc, enable) 519 struct cgfour_softc *sc; 520 int enable; 521 { 522 523 fb_pfour_set_video(&sc->sc_fb, enable); 524 } 525 526 /* 527 * Load a subset of the current (new) colormap into the Brooktree DAC. 528 */ 529 static void 530 cgfourloadcmap(sc, start, ncolors) 531 struct cgfour_softc *sc; 532 int start, ncolors; 533 { 534 volatile struct bt_regs *bt; 535 u_int *ip, i; 536 int count; 537 538 ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */ 539 count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3; 540 bt = &sc->sc_fbc->fbc_dac; 541 bt->bt_addr = BT_D4M4(start) << 24; 542 while (--count >= 0) { 543 i = *ip++; 544 /* hardware that makes one want to pound boards with hammers */ 545 bt->bt_cmap = i; 546 bt->bt_cmap = i << 8; 547 bt->bt_cmap = i << 16; 548 bt->bt_cmap = i << 24; 549 } 550 } 551 #endif 552
Indexes created Thu Oct 02 14:10:14 GMT 2025