cgeight.c revision 1.36
1 /* $NetBSD: cgeight.c,v 1.36 2003/08/07 16:29:34 agc 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 81 * 82 * This software was developed by the Computer Systems Engineering group 83 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 84 * contributed to Berkeley. 85 * 86 * All advertising materials mentioning features or use of this software 87 * must display the following acknowledgement: 88 * This product includes software developed by the University of 89 * California, Lawrence Berkeley Laboratory. 90 * 91 * Redistribution and use in source and binary forms, with or without 92 * modification, are permitted provided that the following conditions 93 * are met: 94 * 1. Redistributions of source code must retain the above copyright 95 * notice, this list of conditions and the following disclaimer. 96 * 2. Redistributions in binary form must reproduce the above copyright 97 * notice, this list of conditions and the following disclaimer in the 98 * documentation and/or other materials provided with the distribution. 99 * 3. All advertising materials mentioning features or use of this software 100 * must display the following acknowledgement: 101 * This product includes software developed by the University of 102 * California, Berkeley and its contributors. 103 * 4. Neither the name of the University nor the names of its contributors 104 * may be used to endorse or promote products derived from this software 105 * without specific prior written permission. 106 * 107 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 108 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 109 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 110 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 111 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 112 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 113 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 114 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 115 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 116 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 117 * SUCH DAMAGE. 118 * 119 * from @(#)cgthree.c 8.2 (Berkeley) 10/30/93 120 */ 121 122 /* 123 * color display (cgeight) driver. 124 * 125 * Does not handle interrupts, even though they can occur. 126 * 127 * XXX should defer colormap updates to vertical retrace interrupts 128 */ 129 130 #include <sys/cdefs.h> 131 __KERNEL_RCSID(0, "$NetBSD: cgeight.c,v 1.36 2003/08/07 16:29:34 agc Exp $"); 132 133 #include <sys/param.h> 134 #include <sys/systm.h> 135 #include <sys/buf.h> 136 #include <sys/device.h> 137 #include <sys/ioctl.h> 138 #include <sys/malloc.h> 139 #include <sys/mman.h> 140 #include <sys/tty.h> 141 #include <sys/conf.h> 142 143 #include <uvm/uvm_extern.h> 144 145 #include <machine/autoconf.h> 146 #include <machine/eeprom.h> 147 148 #include <dev/sun/fbio.h> 149 #include <dev/sun/fbvar.h> 150 #include <dev/sun/btreg.h> 151 #include <dev/sun/btvar.h> 152 #include <dev/sun/pfourreg.h> 153 154 /* per-display variables */ 155 struct cgeight_softc { 156 struct device sc_dev; /* base device */ 157 struct fbdevice sc_fb; /* frame buffer device */ 158 bus_space_tag_t sc_bustag; 159 bus_addr_t sc_paddr; /* phys address for device mmap() */ 160 161 volatile struct fbcontrol *sc_fbc; /* Brooktree registers */ 162 union bt_cmap sc_cmap; /* Brooktree color map */ 163 }; 164 165 /* autoconfiguration driver */ 166 static void cgeightattach(struct device *, struct device *, void *); 167 static int cgeightmatch(struct device *, struct cfdata *, void *); 168 #if defined(SUN4) 169 static void cgeightunblank __P((struct device *)); 170 #endif 171 172 static int cg8_pfour_probe __P((void *, void *)); 173 174 CFATTACH_DECL(cgeight, sizeof(struct cgeight_softc), 175 cgeightmatch, cgeightattach, NULL, NULL); 176 177 extern struct cfdriver cgeight_cd; 178 179 dev_type_open(cgeightopen); 180 dev_type_ioctl(cgeightioctl); 181 dev_type_mmap(cgeightmmap); 182 183 const struct cdevsw cgeight_cdevsw = { 184 cgeightopen, nullclose, noread, nowrite, cgeightioctl, 185 nostop, notty, nopoll, cgeightmmap, nokqfilter 186 }; 187 188 #if defined(SUN4) 189 /* frame buffer generic driver */ 190 static struct fbdriver cgeightfbdriver = { 191 cgeightunblank, cgeightopen, nullclose, cgeightioctl, 192 nopoll, cgeightmmap, nokqfilter 193 }; 194 195 static void cgeightloadcmap __P((struct cgeight_softc *, int, int)); 196 static int cgeight_get_video __P((struct cgeight_softc *)); 197 static void cgeight_set_video __P((struct cgeight_softc *, int)); 198 #endif 199 200 /* 201 * Match a cgeight. 202 */ 203 int 204 cgeightmatch(parent, cf, aux) 205 struct device *parent; 206 struct cfdata *cf; 207 void *aux; 208 { 209 union obio_attach_args *uoba = aux; 210 struct obio4_attach_args *oba; 211 212 if (uoba->uoba_isobio4 == 0) 213 return (0); 214 215 oba = &uoba->uoba_oba4; 216 return (bus_space_probe(oba->oba_bustag, oba->oba_paddr, 217 4, /* probe size */ 218 0, /* offset */ 219 0, /* flags */ 220 cg8_pfour_probe, NULL)); 221 } 222 223 int 224 cg8_pfour_probe(vaddr, arg) 225 void *vaddr; 226 void *arg; 227 { 228 229 return (fb_pfour_id(vaddr) == PFOUR_ID_COLOR24); 230 } 231 232 /* 233 * Attach a display. We need to notice if it is the console, too. 234 */ 235 void 236 cgeightattach(parent, self, aux) 237 struct device *parent, *self; 238 void *aux; 239 { 240 #if defined(SUN4) 241 union obio_attach_args *uoba = aux; 242 struct obio4_attach_args *oba = &uoba->uoba_oba4; 243 struct cgeight_softc *sc = (struct cgeight_softc *)self; 244 struct fbdevice *fb = &sc->sc_fb; 245 bus_space_handle_t bh; 246 volatile struct bt_regs *bt; 247 int ramsize, i, isconsole; 248 249 sc->sc_bustag = oba->oba_bustag; 250 sc->sc_paddr = (bus_addr_t)oba->oba_paddr; 251 252 /* Map the pfour register. */ 253 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 254 sizeof(u_int32_t), 255 BUS_SPACE_MAP_LINEAR, 256 &bh) != 0) { 257 printf("%s: cannot map pfour register\n", self->dv_xname); 258 return; 259 } 260 fb->fb_pfour = (volatile u_int32_t *)bh; 261 262 fb->fb_driver = &cgeightfbdriver; 263 fb->fb_device = &sc->sc_dev; 264 fb->fb_type.fb_type = FBTYPE_MEMCOLOR; 265 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags & FB_USERMASK; 266 fb->fb_flags |= FB_PFOUR; 267 268 ramsize = PFOUR_COLOR_OFF_END - PFOUR_COLOR_OFF_OVERLAY; 269 270 fb->fb_type.fb_depth = 24; 271 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 272 273 sc->sc_fb.fb_type.fb_cmsize = 256; 274 sc->sc_fb.fb_type.fb_size = ramsize; 275 printf(": cgeight/p4, %d x %d", 276 fb->fb_type.fb_width, 277 fb->fb_type.fb_height); 278 279 isconsole = 0; 280 281 if (CPU_ISSUN4) { 282 struct eeprom *eep = (struct eeprom *)eeprom_va; 283 284 /* 285 * Assume this is the console if there's no eeprom info 286 * to be found. 287 */ 288 if (eep == NULL || eep->eeConsole == EE_CONS_P4OPT) 289 isconsole = fb_is_console(0); 290 } 291 292 #if 0 293 /* 294 * We don't do any of the console handling here. Instead, 295 * we let the bwtwo driver pick up the overlay plane and 296 * use it instead. Rconsole should have better performance 297 * with the 1-bit depth. 298 * -- Jason R. Thorpe <thorpej (at) NetBSD.ORG> 299 */ 300 301 /* 302 * When the ROM has mapped in a cgfour display, the address 303 * maps only the video RAM, so in any case we have to map the 304 * registers ourselves. We only need the video RAM if we are 305 * going to print characters via rconsole. 306 */ 307 308 if (isconsole) { 309 /* XXX this is kind of a waste */ 310 fb->fb_pixels = mapiodev(ca->ca_ra.ra_reg, 311 PFOUR_COLOR_OFF_OVERLAY, ramsize); 312 } 313 #endif 314 315 /* Map the Brooktree. */ 316 if (bus_space_map(oba->oba_bustag, 317 oba->oba_paddr + PFOUR_COLOR_OFF_CMAP, 318 sizeof(struct fbcontrol), 319 BUS_SPACE_MAP_LINEAR, 320 &bh) != 0) { 321 printf("%s: cannot map control registers\n", self->dv_xname); 322 return; 323 } 324 sc->sc_fbc = (volatile struct fbcontrol *)bh; 325 326 #if 0 /* XXX thorpej ??? */ 327 /* tell the enable plane to look at the mono image */ 328 memset(ca->ca_ra.ra_vaddr, 0xff, 329 sc->sc_fb.fb_type.fb_width * sc->sc_fb.fb_type.fb_height / 8); 330 #endif 331 332 /* grab initial (current) color map */ 333 bt = &sc->sc_fbc->fbc_dac; 334 bt->bt_addr = 0; 335 for (i = 0; i < 256 * 3 / 4; i++) 336 sc->sc_cmap.cm_chip[i] = bt->bt_cmap; 337 338 BT_INIT(bt, 0); 339 340 #if 0 /* see above */ 341 if (isconsole) { 342 printf(" (console)\n"); 343 #if defined(RASTERCONSOLE) && 0 /* XXX been told it doesn't work well. */ 344 fbrcons_init(fb); 345 #endif 346 } else 347 #endif /* 0 */ 348 printf("\n"); 349 350 /* 351 * Even though we're not using rconsole, we'd still like 352 * to notice if we're the console framebuffer. 353 */ 354 fb_attach(&sc->sc_fb, isconsole); 355 #endif 356 } 357 358 int 359 cgeightopen(dev, flags, mode, p) 360 dev_t dev; 361 int flags, mode; 362 struct proc *p; 363 { 364 int unit = minor(dev); 365 366 if (unit >= cgeight_cd.cd_ndevs || cgeight_cd.cd_devs[unit] == NULL) 367 return (ENXIO); 368 return (0); 369 } 370 371 int 372 cgeightioctl(dev, cmd, data, flags, p) 373 dev_t dev; 374 u_long cmd; 375 caddr_t data; 376 int flags; 377 struct proc *p; 378 { 379 #if defined(SUN4) 380 struct cgeight_softc *sc = cgeight_cd.cd_devs[minor(dev)]; 381 struct fbgattr *fba; 382 int error; 383 384 switch (cmd) { 385 386 case FBIOGTYPE: 387 *(struct fbtype *)data = sc->sc_fb.fb_type; 388 break; 389 390 case FBIOGATTR: 391 fba = (struct fbgattr *)data; 392 fba->real_type = sc->sc_fb.fb_type.fb_type; 393 fba->owner = 0; /* XXX ??? */ 394 fba->fbtype = sc->sc_fb.fb_type; 395 fba->sattr.flags = 0; 396 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 397 fba->sattr.dev_specific[0] = -1; 398 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 399 fba->emu_types[1] = -1; 400 break; 401 402 case FBIOGETCMAP: 403 #define p ((struct fbcmap *)data) 404 return (bt_getcmap(p, &sc->sc_cmap, 256, 1)); 405 406 case FBIOPUTCMAP: 407 /* copy to software map */ 408 error = bt_putcmap(p, &sc->sc_cmap, 256, 1); 409 if (error) 410 return (error); 411 /* now blast them into the chip */ 412 /* XXX should use retrace interrupt */ 413 cgeightloadcmap(sc, p->index, p->count); 414 #undef p 415 break; 416 417 case FBIOGVIDEO: 418 *(int *)data = cgeight_get_video(sc); 419 break; 420 421 case FBIOSVIDEO: 422 cgeight_set_video(sc, *(int *)data); 423 break; 424 425 default: 426 return (ENOTTY); 427 } 428 #endif 429 return (0); 430 } 431 432 /* 433 * Return the address that would map the given device at the given 434 * offset, allowing for the given protection, or return -1 for error. 435 * 436 * The cg8 maps it's overlay plane at 0 for 128K, followed by the 437 * enable plane for 128K, followed by the colour for as long as it 438 * goes. Starting at 8MB, it maps the ramdac for PAGE_SIZE, then the p4 439 * register for PAGE_SIZE, then the bootrom for 0x40000. 440 */ 441 paddr_t 442 cgeightmmap(dev, off, prot) 443 dev_t dev; 444 off_t off; 445 int prot; 446 { 447 struct cgeight_softc *sc = cgeight_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 * 3) 454 #define END_COLOR (START_COLOR + COLOR_SIZE) 455 #define START_SPECIAL 0x800000 456 #define PROMSIZE 0x40000 457 #define NOOVERLAY (0x04000000) 458 459 if (off & PGOFSET) 460 panic("cgeightmap"); 461 462 if (off < 0) 463 return (-1); 464 else if ((u_int)off >= NOOVERLAY) { 465 off -= NOOVERLAY; 466 467 /* 468 * X11 maps a huge chunk of the frame buffer; far more than 469 * there really is. We compensate by double-mapping the 470 * first page for as many other pages as it wants 471 */ 472 while ((u_int)off >= COLOR_SIZE) 473 off -= COLOR_SIZE; /* XXX thorpej ??? */ 474 475 poff = off + PFOUR_COLOR_OFF_COLOR; 476 } else if ((u_int)off < START_ENABLE) { 477 /* 478 * in overlay plane 479 */ 480 poff = PFOUR_COLOR_OFF_OVERLAY + off; 481 } else if ((u_int)off < START_COLOR) { 482 /* 483 * in enable plane 484 */ 485 poff = (off - START_ENABLE) + PFOUR_COLOR_OFF_ENABLE; 486 } else if ((u_int)off < sc->sc_fb.fb_type.fb_size) { 487 /* 488 * in colour plane 489 */ 490 poff = (off - START_COLOR) + PFOUR_COLOR_OFF_COLOR; 491 } else if ((u_int)off < START_SPECIAL) { 492 /* 493 * hole 494 */ 495 poff = 0; /* XXX */ 496 } else if ((u_int)off == START_SPECIAL) { 497 /* 498 * colour map (Brooktree) 499 */ 500 poff = PFOUR_COLOR_OFF_CMAP; 501 } else if ((u_int)off == START_SPECIAL + PAGE_SIZE) { 502 /* 503 * p4 register 504 */ 505 poff = 0; 506 } else if ((u_int)off > (START_SPECIAL + (PAGE_SIZE * 2)) && 507 (u_int) off < (START_SPECIAL + (PAGE_SIZE * 2) + PROMSIZE)) { 508 /* 509 * rom 510 */ 511 poff = 0x8000 + (off - (START_SPECIAL + (PAGE_SIZE * 2))); 512 } else 513 return (-1); 514 515 return (bus_space_mmap(sc->sc_bustag, 516 sc->sc_paddr, poff, 517 prot, BUS_SPACE_MAP_LINEAR)); 518 } 519 520 #if defined(SUN4) 521 /* 522 * Undo the effect of an FBIOSVIDEO that turns the video off. 523 */ 524 static void 525 cgeightunblank(dev) 526 struct device *dev; 527 { 528 529 cgeight_set_video((struct cgeight_softc *)dev, 1); 530 } 531 532 static int 533 cgeight_get_video(sc) 534 struct cgeight_softc *sc; 535 { 536 537 return (fb_pfour_get_video(&sc->sc_fb)); 538 } 539 540 static void 541 cgeight_set_video(sc, enable) 542 struct cgeight_softc *sc; 543 int enable; 544 { 545 546 fb_pfour_set_video(&sc->sc_fb, enable); 547 } 548 549 /* 550 * Load a subset of the current (new) colormap into the Brooktree DAC. 551 */ 552 static void 553 cgeightloadcmap(sc, start, ncolors) 554 register struct cgeight_softc *sc; 555 register int start, ncolors; 556 { 557 volatile struct bt_regs *bt; 558 u_int *ip; 559 int count; 560 561 ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */ 562 count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3; 563 bt = &sc->sc_fbc->fbc_dac; 564 bt->bt_addr = BT_D4M4(start); 565 while (--count >= 0) 566 bt->bt_cmap = *ip++; 567 } 568 #endif 569
Indexes created Mon Sep 29 21:09:56 GMT 2025