1 /* $NetBSD: cgeight.c,v 1.42 2005/12/11 12:19:05 christos 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 1.42 2005/12/11 12:19:05 christos 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(struct device *); 151 #endif 152 153 static int cg8_pfour_probe(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(struct cgeight_softc *, int, int); 177 static int cgeight_get_video(struct cgeight_softc *); 178 static void cgeight_set_video(struct cgeight_softc *, int); 179 #endif 180 181 /* 182 * Match a cgeight. 183 */ 184 static int 185 cgeightmatch(struct device *parent, struct cfdata *cf, void *aux) 186 { 187 union obio_attach_args *uoba = aux; 188 struct obio4_attach_args *oba; 189 190 if (uoba->uoba_isobio4 == 0) 191 return (0); 192 193 oba = &uoba->uoba_oba4; 194 return (bus_space_probe(oba->oba_bustag, oba->oba_paddr, 195 4, /* probe size */ 196 0, /* offset */ 197 0, /* flags */ 198 cg8_pfour_probe, NULL)); 199 } 200 201 static int 202 cg8_pfour_probe(void *vaddr, void *arg) 203 { 204 205 return (fb_pfour_id(vaddr) == PFOUR_ID_COLOR24); 206 } 207 208 /* 209 * Attach a display. We need to notice if it is the console, too. 210 */ 211 static void 212 cgeightattach(struct device *parent, struct device *self, void *aux) 213 { 214 #if defined(SUN4) 215 union obio_attach_args *uoba = aux; 216 struct obio4_attach_args *oba = &uoba->uoba_oba4; 217 struct cgeight_softc *sc = (struct cgeight_softc *)self; 218 struct fbdevice *fb = &sc->sc_fb; 219 bus_space_handle_t bh; 220 volatile struct bt_regs *bt; 221 int ramsize, i, isconsole; 222 223 sc->sc_bustag = oba->oba_bustag; 224 sc->sc_paddr = (bus_addr_t)oba->oba_paddr; 225 226 /* Map the pfour register. */ 227 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 228 sizeof(uint32_t), 229 BUS_SPACE_MAP_LINEAR, 230 &bh) != 0) { 231 printf("%s: cannot map pfour register\n", self->dv_xname); 232 return; 233 } 234 fb->fb_pfour = (volatile uint32_t *)bh; 235 236 fb->fb_driver = &cgeightfbdriver; 237 fb->fb_device = &sc->sc_dev; 238 fb->fb_type.fb_type = FBTYPE_MEMCOLOR; 239 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags & FB_USERMASK; 240 fb->fb_flags |= FB_PFOUR; 241 242 ramsize = PFOUR_COLOR_OFF_END - PFOUR_COLOR_OFF_OVERLAY; 243 244 fb->fb_type.fb_depth = 24; 245 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 246 247 sc->sc_fb.fb_type.fb_cmsize = 256; 248 sc->sc_fb.fb_type.fb_size = ramsize; 249 printf(": cgeight/p4, %d x %d", 250 fb->fb_type.fb_width, 251 fb->fb_type.fb_height); 252 253 isconsole = 0; 254 255 if (CPU_ISSUN4) { 256 struct eeprom *eep = (struct eeprom *)eeprom_va; 257 258 /* 259 * Assume this is the console if there's no eeprom info 260 * to be found. 261 */ 262 if (eep == NULL || eep->eeConsole == EE_CONS_P4OPT) 263 isconsole = fb_is_console(0); 264 } 265 266 #if 0 267 /* 268 * We don't do any of the console handling here. Instead, 269 * we let the bwtwo driver pick up the overlay plane and 270 * use it instead. Rconsole should have better performance 271 * with the 1-bit depth. 272 * -- Jason R. Thorpe <thorpej@NetBSD.org> 273 */ 274 275 /* 276 * When the ROM has mapped in a cgfour display, the address 277 * maps only the video RAM, so in any case we have to map the 278 * registers ourselves. We only need the video RAM if we are 279 * going to print characters via rconsole. 280 */ 281 282 if (isconsole) { 283 /* XXX this is kind of a waste */ 284 fb->fb_pixels = mapiodev(ca->ca_ra.ra_reg, 285 PFOUR_COLOR_OFF_OVERLAY, ramsize); 286 } 287 #endif 288 289 /* Map the Brooktree. */ 290 if (bus_space_map(oba->oba_bustag, 291 oba->oba_paddr + PFOUR_COLOR_OFF_CMAP, 292 sizeof(struct fbcontrol), 293 BUS_SPACE_MAP_LINEAR, 294 &bh) != 0) { 295 printf("%s: cannot map control registers\n", self->dv_xname); 296 return; 297 } 298 sc->sc_fbc = (volatile struct fbcontrol *)bh; 299 300 #if 0 /* XXX thorpej ??? */ 301 /* tell the enable plane to look at the mono image */ 302 memset(ca->ca_ra.ra_vaddr, 0xff, 303 sc->sc_fb.fb_type.fb_width * sc->sc_fb.fb_type.fb_height / 8); 304 #endif 305 306 /* grab initial (current) color map */ 307 bt = &sc->sc_fbc->fbc_dac; 308 bt->bt_addr = 0; 309 for (i = 0; i < 256 * 3 / 4; i++) 310 sc->sc_cmap.cm_chip[i] = bt->bt_cmap; 311 312 BT_INIT(bt, 0); 313 314 #if 0 /* see above */ 315 if (isconsole) { 316 printf(" (console)\n"); 317 #if defined(RASTERCONSOLE) && 0 /* XXX been told it doesn't work well. */ 318 fbrcons_init(fb); 319 #endif 320 } else 321 #endif /* 0 */ 322 printf("\n"); 323 324 /* 325 * Even though we're not using rconsole, we'd still like 326 * to notice if we're the console framebuffer. 327 */ 328 fb_attach(&sc->sc_fb, isconsole); 329 #endif 330 } 331 332 int 333 cgeightopen(dev_t dev, int flags, int mode, struct lwp *l) 334 { 335 int unit = minor(dev); 336 337 if (unit >= cgeight_cd.cd_ndevs || cgeight_cd.cd_devs[unit] == NULL) 338 return (ENXIO); 339 return (0); 340 } 341 342 int 343 cgeightioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct lwp *l) 344 { 345 #if defined(SUN4) 346 struct cgeight_softc *sc = cgeight_cd.cd_devs[minor(dev)]; 347 struct fbgattr *fba; 348 int error; 349 350 switch (cmd) { 351 352 case FBIOGTYPE: 353 *(struct fbtype *)data = sc->sc_fb.fb_type; 354 break; 355 356 case FBIOGATTR: 357 fba = (struct fbgattr *)data; 358 fba->real_type = sc->sc_fb.fb_type.fb_type; 359 fba->owner = 0; /* XXX ??? */ 360 fba->fbtype = sc->sc_fb.fb_type; 361 fba->sattr.flags = 0; 362 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 363 fba->sattr.dev_specific[0] = -1; 364 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 365 fba->emu_types[1] = -1; 366 break; 367 368 case FBIOGETCMAP: 369 #define p ((struct fbcmap *)data) 370 return (bt_getcmap(p, &sc->sc_cmap, 256, 1)); 371 372 case FBIOPUTCMAP: 373 /* copy to software map */ 374 error = bt_putcmap(p, &sc->sc_cmap, 256, 1); 375 if (error) 376 return (error); 377 /* now blast them into the chip */ 378 /* XXX should use retrace interrupt */ 379 cgeightloadcmap(sc, p->index, p->count); 380 #undef p 381 break; 382 383 case FBIOGVIDEO: 384 *(int *)data = cgeight_get_video(sc); 385 break; 386 387 case FBIOSVIDEO: 388 cgeight_set_video(sc, *(int *)data); 389 break; 390 391 default: 392 return (ENOTTY); 393 } 394 #endif /* SUN4 */ 395 396 return (0); 397 } 398 399 /* 400 * Return the address that would map the given device at the given 401 * offset, allowing for the given protection, or return -1 for error. 402 * 403 * The cg8 maps it's overlay plane at 0 for 128K, followed by the 404 * enable plane for 128K, followed by the colour for as long as it 405 * goes. Starting at 8MB, it maps the ramdac for PAGE_SIZE, then the p4 406 * register for PAGE_SIZE, then the bootrom for 0x40000. 407 */ 408 paddr_t 409 cgeightmmap(dev_t dev, off_t off, int prot) 410 { 411 struct cgeight_softc *sc = cgeight_cd.cd_devs[minor(dev)]; 412 off_t poff; 413 414 #define START_ENABLE (128*1024) 415 #define START_COLOR ((128*1024) + (128*1024)) 416 #define COLOR_SIZE (sc->sc_fb.fb_type.fb_width * \ 417 sc->sc_fb.fb_type.fb_height * 3) 418 #define END_COLOR (START_COLOR + COLOR_SIZE) 419 #define START_SPECIAL 0x800000 420 #define PROMSIZE 0x40000 421 #define NOOVERLAY (0x04000000) 422 423 if (off & PGOFSET) 424 panic("cgeightmap"); 425 426 if (off < 0) 427 return (-1); 428 else if ((u_int)off >= NOOVERLAY) { 429 off -= NOOVERLAY; 430 431 /* 432 * X11 maps a huge chunk of the frame buffer; far more than 433 * there really is. We compensate by double-mapping the 434 * first page for as many other pages as it wants 435 */ 436 while ((u_int)off >= COLOR_SIZE) 437 off -= COLOR_SIZE; /* XXX thorpej ??? */ 438 439 poff = off + PFOUR_COLOR_OFF_COLOR; 440 } else if ((u_int)off < START_ENABLE) { 441 /* 442 * in overlay plane 443 */ 444 poff = PFOUR_COLOR_OFF_OVERLAY + off; 445 } else if ((u_int)off < START_COLOR) { 446 /* 447 * in enable plane 448 */ 449 poff = (off - START_ENABLE) + PFOUR_COLOR_OFF_ENABLE; 450 } else if ((u_int)off < sc->sc_fb.fb_type.fb_size) { 451 /* 452 * in colour plane 453 */ 454 poff = (off - START_COLOR) + PFOUR_COLOR_OFF_COLOR; 455 } else if ((u_int)off < START_SPECIAL) { 456 /* 457 * hole 458 */ 459 poff = 0; /* XXX */ 460 } else if ((u_int)off == START_SPECIAL) { 461 /* 462 * colour map (Brooktree) 463 */ 464 poff = PFOUR_COLOR_OFF_CMAP; 465 } else if ((u_int)off == START_SPECIAL + PAGE_SIZE) { 466 /* 467 * p4 register 468 */ 469 poff = 0; 470 } else if ((u_int)off > (START_SPECIAL + (PAGE_SIZE * 2)) && 471 (u_int) off < (START_SPECIAL + (PAGE_SIZE * 2) + PROMSIZE)) { 472 /* 473 * rom 474 */ 475 poff = 0x8000 + (off - (START_SPECIAL + (PAGE_SIZE * 2))); 476 } else 477 return (-1); 478 479 return (bus_space_mmap(sc->sc_bustag, 480 sc->sc_paddr, poff, 481 prot, BUS_SPACE_MAP_LINEAR)); 482 } 483 484 #if defined(SUN4) 485 /* 486 * Undo the effect of an FBIOSVIDEO that turns the video off. 487 */ 488 static void 489 cgeightunblank(struct device *dev) 490 { 491 492 cgeight_set_video((struct cgeight_softc *)dev, 1); 493 } 494 495 static int 496 cgeight_get_video(struct cgeight_softc *sc) 497 { 498 499 return (fb_pfour_get_video(&sc->sc_fb)); 500 } 501 502 static void 503 cgeight_set_video(struct cgeight_softc *sc, int enable) 504 { 505 506 fb_pfour_set_video(&sc->sc_fb, enable); 507 } 508 509 /* 510 * Load a subset of the current (new) colormap into the Brooktree DAC. 511 */ 512 static void 513 cgeightloadcmap(struct cgeight_softc *sc, int start, int ncolors) 514 { 515 volatile struct bt_regs *bt; 516 u_int *ip; 517 int count; 518 519 ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */ 520 count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3; 521 bt = &sc->sc_fbc->fbc_dac; 522 bt->bt_addr = BT_D4M4(start); 523 while (--count >= 0) 524 bt->bt_cmap = *ip++; 525 } 526 #endif /* SUN4 */ 527