cgeight.c revision 1.40
1 /* $NetBSD: cgeight.c,v 1.40 2003/12/10 12:06:25 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. All rights reserved. 81 * 82 * Redistribution and use in source and binary forms, with or without 83 * modification, are permitted provided that the following conditions 84 * are met: 85 * 1. Redistributions of source code must retain the above copyright 86 * notice, this list of conditions and the following disclaimer. 87 * 2. Redistributions in binary form must reproduce the above copyright 88 * notice, this list of conditions and the following disclaimer in the 89 * documentation and/or other materials provided with the distribution. 90 * 91 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 92 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 93 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 94 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 95 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 96 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 97 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 98 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 99 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 100 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 101 */ 102 103 /* 104 * color display (cgeight) driver. 105 * 106 * Does not handle interrupts, even though they can occur. 107 * 108 * XXX should defer colormap updates to vertical retrace interrupts 109 */ 110 111 #include <sys/cdefs.h> 112 __KERNEL_RCSID(0, "$NetBSD: cgeight.c,v 1.40 2003/12/10 12:06:25 agc Exp $"); 113 114 #include <sys/param.h> 115 #include <sys/systm.h> 116 #include <sys/buf.h> 117 #include <sys/device.h> 118 #include <sys/ioctl.h> 119 #include <sys/malloc.h> 120 #include <sys/mman.h> 121 #include <sys/tty.h> 122 #include <sys/conf.h> 123 124 #include <uvm/uvm_extern.h> 125 126 #include <machine/autoconf.h> 127 #include <machine/eeprom.h> 128 129 #include <dev/sun/fbio.h> 130 #include <dev/sun/fbvar.h> 131 #include <dev/sun/btreg.h> 132 #include <dev/sun/btvar.h> 133 #include <dev/sun/pfourreg.h> 134 135 /* per-display variables */ 136 struct cgeight_softc { 137 struct device sc_dev; /* base device */ 138 struct fbdevice sc_fb; /* frame buffer device */ 139 bus_space_tag_t sc_bustag; 140 bus_addr_t sc_paddr; /* phys address for device mmap() */ 141 142 volatile struct fbcontrol *sc_fbc; /* Brooktree registers */ 143 union bt_cmap sc_cmap; /* Brooktree color map */ 144 }; 145 146 /* autoconfiguration driver */ 147 static void cgeightattach(struct device *, struct device *, void *); 148 static int cgeightmatch(struct device *, struct cfdata *, void *); 149 #if defined(SUN4) 150 static void cgeightunblank __P((struct device *)); 151 #endif 152 153 static int cg8_pfour_probe __P((void *, void *)); 154 155 CFATTACH_DECL(cgeight, sizeof(struct cgeight_softc), 156 cgeightmatch, cgeightattach, NULL, NULL); 157 158 extern struct cfdriver cgeight_cd; 159 160 dev_type_open(cgeightopen); 161 dev_type_ioctl(cgeightioctl); 162 dev_type_mmap(cgeightmmap); 163 164 const struct cdevsw cgeight_cdevsw = { 165 cgeightopen, nullclose, noread, nowrite, cgeightioctl, 166 nostop, notty, nopoll, cgeightmmap, nokqfilter 167 }; 168 169 #if defined(SUN4) 170 /* frame buffer generic driver */ 171 static struct fbdriver cgeightfbdriver = { 172 cgeightunblank, cgeightopen, nullclose, cgeightioctl, 173 nopoll, cgeightmmap, nokqfilter 174 }; 175 176 static void cgeightloadcmap __P((struct cgeight_softc *, int, int)); 177 static int cgeight_get_video __P((struct cgeight_softc *)); 178 static void cgeight_set_video __P((struct cgeight_softc *, int)); 179 #endif 180 181 /* 182 * Match a cgeight. 183 */ 184 int 185 cgeightmatch(parent, cf, aux) 186 struct device *parent; 187 struct cfdata *cf; 188 void *aux; 189 { 190 union obio_attach_args *uoba = aux; 191 struct obio4_attach_args *oba; 192 193 if (uoba->uoba_isobio4 == 0) 194 return (0); 195 196 oba = &uoba->uoba_oba4; 197 return (bus_space_probe(oba->oba_bustag, oba->oba_paddr, 198 4, /* probe size */ 199 0, /* offset */ 200 0, /* flags */ 201 cg8_pfour_probe, NULL)); 202 } 203 204 int 205 cg8_pfour_probe(vaddr, arg) 206 void *vaddr; 207 void *arg; 208 { 209 210 return (fb_pfour_id(vaddr) == PFOUR_ID_COLOR24); 211 } 212 213 /* 214 * Attach a display. We need to notice if it is the console, too. 215 */ 216 void 217 cgeightattach(parent, self, aux) 218 struct device *parent, *self; 219 void *aux; 220 { 221 #if defined(SUN4) 222 union obio_attach_args *uoba = aux; 223 struct obio4_attach_args *oba = &uoba->uoba_oba4; 224 struct cgeight_softc *sc = (struct cgeight_softc *)self; 225 struct fbdevice *fb = &sc->sc_fb; 226 bus_space_handle_t bh; 227 volatile struct bt_regs *bt; 228 int ramsize, i, isconsole; 229 230 sc->sc_bustag = oba->oba_bustag; 231 sc->sc_paddr = (bus_addr_t)oba->oba_paddr; 232 233 /* Map the pfour register. */ 234 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 235 sizeof(u_int32_t), 236 BUS_SPACE_MAP_LINEAR, 237 &bh) != 0) { 238 printf("%s: cannot map pfour register\n", self->dv_xname); 239 return; 240 } 241 fb->fb_pfour = (volatile u_int32_t *)bh; 242 243 fb->fb_driver = &cgeightfbdriver; 244 fb->fb_device = &sc->sc_dev; 245 fb->fb_type.fb_type = FBTYPE_MEMCOLOR; 246 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags & FB_USERMASK; 247 fb->fb_flags |= FB_PFOUR; 248 249 ramsize = PFOUR_COLOR_OFF_END - PFOUR_COLOR_OFF_OVERLAY; 250 251 fb->fb_type.fb_depth = 24; 252 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 253 254 sc->sc_fb.fb_type.fb_cmsize = 256; 255 sc->sc_fb.fb_type.fb_size = ramsize; 256 printf(": cgeight/p4, %d x %d", 257 fb->fb_type.fb_width, 258 fb->fb_type.fb_height); 259 260 isconsole = 0; 261 262 if (CPU_ISSUN4) { 263 struct eeprom *eep = (struct eeprom *)eeprom_va; 264 265 /* 266 * Assume this is the console if there's no eeprom info 267 * to be found. 268 */ 269 if (eep == NULL || eep->eeConsole == EE_CONS_P4OPT) 270 isconsole = fb_is_console(0); 271 } 272 273 #if 0 274 /* 275 * We don't do any of the console handling here. Instead, 276 * we let the bwtwo driver pick up the overlay plane and 277 * use it instead. Rconsole should have better performance 278 * with the 1-bit depth. 279 * -- Jason R. Thorpe <thorpej (at) NetBSD.org> 280 */ 281 282 /* 283 * When the ROM has mapped in a cgfour display, the address 284 * maps only the video RAM, so in any case we have to map the 285 * registers ourselves. We only need the video RAM if we are 286 * going to print characters via rconsole. 287 */ 288 289 if (isconsole) { 290 /* XXX this is kind of a waste */ 291 fb->fb_pixels = mapiodev(ca->ca_ra.ra_reg, 292 PFOUR_COLOR_OFF_OVERLAY, ramsize); 293 } 294 #endif 295 296 /* Map the Brooktree. */ 297 if (bus_space_map(oba->oba_bustag, 298 oba->oba_paddr + PFOUR_COLOR_OFF_CMAP, 299 sizeof(struct fbcontrol), 300 BUS_SPACE_MAP_LINEAR, 301 &bh) != 0) { 302 printf("%s: cannot map control registers\n", self->dv_xname); 303 return; 304 } 305 sc->sc_fbc = (volatile struct fbcontrol *)bh; 306 307 #if 0 /* XXX thorpej ??? */ 308 /* tell the enable plane to look at the mono image */ 309 memset(ca->ca_ra.ra_vaddr, 0xff, 310 sc->sc_fb.fb_type.fb_width * sc->sc_fb.fb_type.fb_height / 8); 311 #endif 312 313 /* grab initial (current) color map */ 314 bt = &sc->sc_fbc->fbc_dac; 315 bt->bt_addr = 0; 316 for (i = 0; i < 256 * 3 / 4; i++) 317 sc->sc_cmap.cm_chip[i] = bt->bt_cmap; 318 319 BT_INIT(bt, 0); 320 321 #if 0 /* see above */ 322 if (isconsole) { 323 printf(" (console)\n"); 324 #if defined(RASTERCONSOLE) && 0 /* XXX been told it doesn't work well. */ 325 fbrcons_init(fb); 326 #endif 327 } else 328 #endif /* 0 */ 329 printf("\n"); 330 331 /* 332 * Even though we're not using rconsole, we'd still like 333 * to notice if we're the console framebuffer. 334 */ 335 fb_attach(&sc->sc_fb, isconsole); 336 #endif 337 } 338 339 int 340 cgeightopen(dev, flags, mode, p) 341 dev_t dev; 342 int flags, mode; 343 struct proc *p; 344 { 345 int unit = minor(dev); 346 347 if (unit >= cgeight_cd.cd_ndevs || cgeight_cd.cd_devs[unit] == NULL) 348 return (ENXIO); 349 return (0); 350 } 351 352 int 353 cgeightioctl(dev, cmd, data, flags, p) 354 dev_t dev; 355 u_long cmd; 356 caddr_t data; 357 int flags; 358 struct proc *p; 359 { 360 #if defined(SUN4) 361 struct cgeight_softc *sc = cgeight_cd.cd_devs[minor(dev)]; 362 struct fbgattr *fba; 363 int error; 364 365 switch (cmd) { 366 367 case FBIOGTYPE: 368 *(struct fbtype *)data = sc->sc_fb.fb_type; 369 break; 370 371 case FBIOGATTR: 372 fba = (struct fbgattr *)data; 373 fba->real_type = sc->sc_fb.fb_type.fb_type; 374 fba->owner = 0; /* XXX ??? */ 375 fba->fbtype = sc->sc_fb.fb_type; 376 fba->sattr.flags = 0; 377 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 378 fba->sattr.dev_specific[0] = -1; 379 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 380 fba->emu_types[1] = -1; 381 break; 382 383 case FBIOGETCMAP: 384 #define p ((struct fbcmap *)data) 385 return (bt_getcmap(p, &sc->sc_cmap, 256, 1)); 386 387 case FBIOPUTCMAP: 388 /* copy to software map */ 389 error = bt_putcmap(p, &sc->sc_cmap, 256, 1); 390 if (error) 391 return (error); 392 /* now blast them into the chip */ 393 /* XXX should use retrace interrupt */ 394 cgeightloadcmap(sc, p->index, p->count); 395 #undef p 396 break; 397 398 case FBIOGVIDEO: 399 *(int *)data = cgeight_get_video(sc); 400 break; 401 402 case FBIOSVIDEO: 403 cgeight_set_video(sc, *(int *)data); 404 break; 405 406 default: 407 return (ENOTTY); 408 } 409 #endif 410 return (0); 411 } 412 413 /* 414 * Return the address that would map the given device at the given 415 * offset, allowing for the given protection, or return -1 for error. 416 * 417 * The cg8 maps it's overlay plane at 0 for 128K, followed by the 418 * enable plane for 128K, followed by the colour for as long as it 419 * goes. Starting at 8MB, it maps the ramdac for PAGE_SIZE, then the p4 420 * register for PAGE_SIZE, then the bootrom for 0x40000. 421 */ 422 paddr_t 423 cgeightmmap(dev, off, prot) 424 dev_t dev; 425 off_t off; 426 int prot; 427 { 428 struct cgeight_softc *sc = cgeight_cd.cd_devs[minor(dev)]; 429 off_t poff; 430 431 #define START_ENABLE (128*1024) 432 #define START_COLOR ((128*1024) + (128*1024)) 433 #define COLOR_SIZE (sc->sc_fb.fb_type.fb_width * \ 434 sc->sc_fb.fb_type.fb_height * 3) 435 #define END_COLOR (START_COLOR + COLOR_SIZE) 436 #define START_SPECIAL 0x800000 437 #define PROMSIZE 0x40000 438 #define NOOVERLAY (0x04000000) 439 440 if (off & PGOFSET) 441 panic("cgeightmap"); 442 443 if (off < 0) 444 return (-1); 445 else if ((u_int)off >= NOOVERLAY) { 446 off -= NOOVERLAY; 447 448 /* 449 * X11 maps a huge chunk of the frame buffer; far more than 450 * there really is. We compensate by double-mapping the 451 * first page for as many other pages as it wants 452 */ 453 while ((u_int)off >= COLOR_SIZE) 454 off -= COLOR_SIZE; /* XXX thorpej ??? */ 455 456 poff = off + PFOUR_COLOR_OFF_COLOR; 457 } else if ((u_int)off < START_ENABLE) { 458 /* 459 * in overlay plane 460 */ 461 poff = PFOUR_COLOR_OFF_OVERLAY + off; 462 } else if ((u_int)off < START_COLOR) { 463 /* 464 * in enable plane 465 */ 466 poff = (off - START_ENABLE) + PFOUR_COLOR_OFF_ENABLE; 467 } else if ((u_int)off < sc->sc_fb.fb_type.fb_size) { 468 /* 469 * in colour plane 470 */ 471 poff = (off - START_COLOR) + PFOUR_COLOR_OFF_COLOR; 472 } else if ((u_int)off < START_SPECIAL) { 473 /* 474 * hole 475 */ 476 poff = 0; /* XXX */ 477 } else if ((u_int)off == START_SPECIAL) { 478 /* 479 * colour map (Brooktree) 480 */ 481 poff = PFOUR_COLOR_OFF_CMAP; 482 } else if ((u_int)off == START_SPECIAL + PAGE_SIZE) { 483 /* 484 * p4 register 485 */ 486 poff = 0; 487 } else if ((u_int)off > (START_SPECIAL + (PAGE_SIZE * 2)) && 488 (u_int) off < (START_SPECIAL + (PAGE_SIZE * 2) + PROMSIZE)) { 489 /* 490 * rom 491 */ 492 poff = 0x8000 + (off - (START_SPECIAL + (PAGE_SIZE * 2))); 493 } else 494 return (-1); 495 496 return (bus_space_mmap(sc->sc_bustag, 497 sc->sc_paddr, poff, 498 prot, BUS_SPACE_MAP_LINEAR)); 499 } 500 501 #if defined(SUN4) 502 /* 503 * Undo the effect of an FBIOSVIDEO that turns the video off. 504 */ 505 static void 506 cgeightunblank(dev) 507 struct device *dev; 508 { 509 510 cgeight_set_video((struct cgeight_softc *)dev, 1); 511 } 512 513 static int 514 cgeight_get_video(sc) 515 struct cgeight_softc *sc; 516 { 517 518 return (fb_pfour_get_video(&sc->sc_fb)); 519 } 520 521 static void 522 cgeight_set_video(sc, enable) 523 struct cgeight_softc *sc; 524 int enable; 525 { 526 527 fb_pfour_set_video(&sc->sc_fb, enable); 528 } 529 530 /* 531 * Load a subset of the current (new) colormap into the Brooktree DAC. 532 */ 533 static void 534 cgeightloadcmap(sc, start, ncolors) 535 register struct cgeight_softc *sc; 536 register int start, ncolors; 537 { 538 volatile struct bt_regs *bt; 539 u_int *ip; 540 int count; 541 542 ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */ 543 count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3; 544 bt = &sc->sc_fbc->fbc_dac; 545 bt->bt_addr = BT_D4M4(start); 546 while (--count >= 0) 547 bt->bt_cmap = *ip++; 548 } 549 #endif 550
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