1 /* $NetBSD: cgeight.c,v 1.45 2008/04/28 20:23:35 martin 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1992, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * This software was developed by the Computer Systems Engineering group 37 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 38 * contributed to Berkeley. 39 * 40 * All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by the University of 43 * California, Lawrence Berkeley Laboratory. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. Neither the name of the University nor the names of its contributors 54 * may be used to endorse or promote products derived from this software 55 * without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 59 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 60 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 61 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 62 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 63 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 64 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 65 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 67 * SUCH DAMAGE. 68 * 69 * from @(#)cgthree.c 8.2 (Berkeley) 10/30/93 70 */ 71 72 /* 73 * Copyright (c) 1995 Theo de Raadt. All rights reserved. 74 * 75 * Redistribution and use in source and binary forms, with or without 76 * modification, are permitted provided that the following conditions 77 * are met: 78 * 1. Redistributions of source code must retain the above copyright 79 * notice, this list of conditions and the following disclaimer. 80 * 2. Redistributions in binary form must reproduce the above copyright 81 * notice, this list of conditions and the following disclaimer in the 82 * documentation and/or other materials provided with the distribution. 83 * 84 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 85 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 86 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 87 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 88 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 89 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 90 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 91 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 92 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 93 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 94 */ 95 96 /* 97 * color display (cgeight) driver. 98 * 99 * Does not handle interrupts, even though they can occur. 100 * 101 * XXX should defer colormap updates to vertical retrace interrupts 102 */ 103 104 #include <sys/cdefs.h> 105 __KERNEL_RCSID(0, "$NetBSD: cgeight.c,v 1.45 2008/04/28 20:23:35 martin Exp $"); 106 107 #include <sys/param.h> 108 #include <sys/systm.h> 109 #include <sys/buf.h> 110 #include <sys/device.h> 111 #include <sys/ioctl.h> 112 #include <sys/malloc.h> 113 #include <sys/mman.h> 114 #include <sys/tty.h> 115 #include <sys/conf.h> 116 117 #include <uvm/uvm_extern.h> 118 119 #include <machine/autoconf.h> 120 #include <machine/eeprom.h> 121 122 #include <dev/sun/fbio.h> 123 #include <dev/sun/fbvar.h> 124 #include <dev/sun/btreg.h> 125 #include <dev/sun/btvar.h> 126 #include <dev/sun/pfourreg.h> 127 128 /* per-display variables */ 129 struct cgeight_softc { 130 struct device sc_dev; /* base device */ 131 struct fbdevice sc_fb; /* frame buffer device */ 132 bus_space_tag_t sc_bustag; 133 bus_addr_t sc_paddr; /* phys address for device mmap() */ 134 135 volatile struct fbcontrol *sc_fbc; /* Brooktree registers */ 136 union bt_cmap sc_cmap; /* Brooktree color map */ 137 }; 138 139 /* autoconfiguration driver */ 140 static void cgeightattach(struct device *, struct device *, void *); 141 static int cgeightmatch(struct device *, struct cfdata *, void *); 142 #if defined(SUN4) 143 static void cgeightunblank(struct device *); 144 #endif 145 146 static int cg8_pfour_probe(void *, void *); 147 148 CFATTACH_DECL(cgeight, sizeof(struct cgeight_softc), 149 cgeightmatch, cgeightattach, NULL, NULL); 150 151 extern struct cfdriver cgeight_cd; 152 153 dev_type_open(cgeightopen); 154 dev_type_ioctl(cgeightioctl); 155 dev_type_mmap(cgeightmmap); 156 157 const struct cdevsw cgeight_cdevsw = { 158 cgeightopen, nullclose, noread, nowrite, cgeightioctl, 159 nostop, notty, nopoll, cgeightmmap, nokqfilter 160 }; 161 162 #if defined(SUN4) 163 /* frame buffer generic driver */ 164 static struct fbdriver cgeightfbdriver = { 165 cgeightunblank, cgeightopen, nullclose, cgeightioctl, 166 nopoll, cgeightmmap, nokqfilter 167 }; 168 169 static void cgeightloadcmap(struct cgeight_softc *, int, int); 170 static int cgeight_get_video(struct cgeight_softc *); 171 static void cgeight_set_video(struct cgeight_softc *, int); 172 #endif 173 174 /* 175 * Match a cgeight. 176 */ 177 static int 178 cgeightmatch(struct device *parent, struct cfdata *cf, void *aux) 179 { 180 union obio_attach_args *uoba = aux; 181 struct obio4_attach_args *oba; 182 183 if (uoba->uoba_isobio4 == 0) 184 return (0); 185 186 oba = &uoba->uoba_oba4; 187 return (bus_space_probe(oba->oba_bustag, oba->oba_paddr, 188 4, /* probe size */ 189 0, /* offset */ 190 0, /* flags */ 191 cg8_pfour_probe, NULL)); 192 } 193 194 static int 195 cg8_pfour_probe(void *vaddr, void *arg) 196 { 197 198 return (fb_pfour_id(vaddr) == PFOUR_ID_COLOR24); 199 } 200 201 /* 202 * Attach a display. We need to notice if it is the console, too. 203 */ 204 static void 205 cgeightattach(struct device *parent, struct device *self, void *aux) 206 { 207 #if defined(SUN4) 208 union obio_attach_args *uoba = aux; 209 struct obio4_attach_args *oba = &uoba->uoba_oba4; 210 struct cgeight_softc *sc = (struct cgeight_softc *)self; 211 struct fbdevice *fb = &sc->sc_fb; 212 bus_space_handle_t bh; 213 volatile struct bt_regs *bt; 214 int ramsize, i, isconsole; 215 216 sc->sc_bustag = oba->oba_bustag; 217 sc->sc_paddr = (bus_addr_t)oba->oba_paddr; 218 219 /* Map the pfour register. */ 220 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 221 sizeof(uint32_t), 222 BUS_SPACE_MAP_LINEAR, 223 &bh) != 0) { 224 printf("%s: cannot map pfour register\n", self->dv_xname); 225 return; 226 } 227 fb->fb_pfour = (volatile uint32_t *)bh; 228 229 fb->fb_driver = &cgeightfbdriver; 230 fb->fb_device = &sc->sc_dev; 231 fb->fb_type.fb_type = FBTYPE_MEMCOLOR; 232 fb->fb_flags = device_cfdata(&sc->sc_dev)->cf_flags & FB_USERMASK; 233 fb->fb_flags |= FB_PFOUR; 234 235 ramsize = PFOUR_COLOR_OFF_END - PFOUR_COLOR_OFF_OVERLAY; 236 237 fb->fb_type.fb_depth = 24; 238 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 239 240 sc->sc_fb.fb_type.fb_cmsize = 256; 241 sc->sc_fb.fb_type.fb_size = ramsize; 242 printf(": cgeight/p4, %d x %d", 243 fb->fb_type.fb_width, 244 fb->fb_type.fb_height); 245 246 isconsole = 0; 247 248 if (CPU_ISSUN4) { 249 struct eeprom *eep = (struct eeprom *)eeprom_va; 250 251 /* 252 * Assume this is the console if there's no eeprom info 253 * to be found. 254 */ 255 if (eep == NULL || eep->eeConsole == EE_CONS_P4OPT) 256 isconsole = fb_is_console(0); 257 } 258 259 #if 0 260 /* 261 * We don't do any of the console handling here. Instead, 262 * we let the bwtwo driver pick up the overlay plane and 263 * use it instead. Rconsole should have better performance 264 * with the 1-bit depth. 265 * -- Jason R. Thorpe <thorpej@NetBSD.org> 266 */ 267 268 /* 269 * When the ROM has mapped in a cgfour display, the address 270 * maps only the video RAM, so in any case we have to map the 271 * registers ourselves. We only need the video RAM if we are 272 * going to print characters via rconsole. 273 */ 274 275 if (isconsole) { 276 /* XXX this is kind of a waste */ 277 fb->fb_pixels = mapiodev(ca->ca_ra.ra_reg, 278 PFOUR_COLOR_OFF_OVERLAY, ramsize); 279 } 280 #endif 281 282 /* Map the Brooktree. */ 283 if (bus_space_map(oba->oba_bustag, 284 oba->oba_paddr + PFOUR_COLOR_OFF_CMAP, 285 sizeof(struct fbcontrol), 286 BUS_SPACE_MAP_LINEAR, 287 &bh) != 0) { 288 printf("%s: cannot map control registers\n", self->dv_xname); 289 return; 290 } 291 sc->sc_fbc = (volatile struct fbcontrol *)bh; 292 293 #if 0 /* XXX thorpej ??? */ 294 /* tell the enable plane to look at the mono image */ 295 memset(ca->ca_ra.ra_vaddr, 0xff, 296 sc->sc_fb.fb_type.fb_width * sc->sc_fb.fb_type.fb_height / 8); 297 #endif 298 299 /* grab initial (current) color map */ 300 bt = &sc->sc_fbc->fbc_dac; 301 bt->bt_addr = 0; 302 for (i = 0; i < 256 * 3 / 4; i++) 303 sc->sc_cmap.cm_chip[i] = bt->bt_cmap; 304 305 BT_INIT(bt, 0); 306 307 #if 0 /* see above */ 308 if (isconsole) { 309 printf(" (console)\n"); 310 #if defined(RASTERCONSOLE) && 0 /* XXX been told it doesn't work well. */ 311 fbrcons_init(fb); 312 #endif 313 } else 314 #endif /* 0 */ 315 printf("\n"); 316 317 /* 318 * Even though we're not using rconsole, we'd still like 319 * to notice if we're the console framebuffer. 320 */ 321 fb_attach(&sc->sc_fb, isconsole); 322 #endif 323 } 324 325 int 326 cgeightopen(dev_t dev, int flags, int mode, struct lwp *l) 327 { 328 int unit = minor(dev); 329 330 if (unit >= cgeight_cd.cd_ndevs || cgeight_cd.cd_devs[unit] == NULL) 331 return (ENXIO); 332 return (0); 333 } 334 335 int 336 cgeightioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 337 { 338 #if defined(SUN4) 339 struct cgeight_softc *sc = cgeight_cd.cd_devs[minor(dev)]; 340 struct fbgattr *fba; 341 int error; 342 343 switch (cmd) { 344 345 case FBIOGTYPE: 346 *(struct fbtype *)data = sc->sc_fb.fb_type; 347 break; 348 349 case FBIOGATTR: 350 fba = (struct fbgattr *)data; 351 fba->real_type = sc->sc_fb.fb_type.fb_type; 352 fba->owner = 0; /* XXX ??? */ 353 fba->fbtype = sc->sc_fb.fb_type; 354 fba->sattr.flags = 0; 355 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 356 fba->sattr.dev_specific[0] = -1; 357 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 358 fba->emu_types[1] = -1; 359 break; 360 361 case FBIOGETCMAP: 362 #define p ((struct fbcmap *)data) 363 return (bt_getcmap(p, &sc->sc_cmap, 256, 1)); 364 365 case FBIOPUTCMAP: 366 /* copy to software map */ 367 error = bt_putcmap(p, &sc->sc_cmap, 256, 1); 368 if (error) 369 return (error); 370 /* now blast them into the chip */ 371 /* XXX should use retrace interrupt */ 372 cgeightloadcmap(sc, p->index, p->count); 373 #undef p 374 break; 375 376 case FBIOGVIDEO: 377 *(int *)data = cgeight_get_video(sc); 378 break; 379 380 case FBIOSVIDEO: 381 cgeight_set_video(sc, *(int *)data); 382 break; 383 384 default: 385 return (ENOTTY); 386 } 387 #endif /* SUN4 */ 388 389 return (0); 390 } 391 392 /* 393 * Return the address that would map the given device at the given 394 * offset, allowing for the given protection, or return -1 for error. 395 * 396 * The cg8 maps it's overlay plane at 0 for 128K, followed by the 397 * enable plane for 128K, followed by the colour for as long as it 398 * goes. Starting at 8MB, it maps the ramdac for PAGE_SIZE, then the p4 399 * register for PAGE_SIZE, then the bootrom for 0x40000. 400 */ 401 paddr_t 402 cgeightmmap(dev_t dev, off_t off, int prot) 403 { 404 struct cgeight_softc *sc = cgeight_cd.cd_devs[minor(dev)]; 405 off_t poff; 406 407 #define START_ENABLE (128*1024) 408 #define START_COLOR ((128*1024) + (128*1024)) 409 #define COLOR_SIZE (sc->sc_fb.fb_type.fb_width * \ 410 sc->sc_fb.fb_type.fb_height * 3) 411 #define END_COLOR (START_COLOR + COLOR_SIZE) 412 #define START_SPECIAL 0x800000 413 #define PROMSIZE 0x40000 414 #define NOOVERLAY (0x04000000) 415 416 if (off & PGOFSET) 417 panic("cgeightmap"); 418 419 if (off < 0) 420 return (-1); 421 else if ((u_int)off >= NOOVERLAY) { 422 off -= NOOVERLAY; 423 424 /* 425 * X11 maps a huge chunk of the frame buffer; far more than 426 * there really is. We compensate by double-mapping the 427 * first page for as many other pages as it wants 428 */ 429 while ((u_int)off >= COLOR_SIZE) 430 off -= COLOR_SIZE; /* XXX thorpej ??? */ 431 432 poff = off + PFOUR_COLOR_OFF_COLOR; 433 } else if ((u_int)off < START_ENABLE) { 434 /* 435 * in overlay plane 436 */ 437 poff = PFOUR_COLOR_OFF_OVERLAY + off; 438 } else if ((u_int)off < START_COLOR) { 439 /* 440 * in enable plane 441 */ 442 poff = (off - START_ENABLE) + PFOUR_COLOR_OFF_ENABLE; 443 } else if ((u_int)off < sc->sc_fb.fb_type.fb_size) { 444 /* 445 * in colour plane 446 */ 447 poff = (off - START_COLOR) + PFOUR_COLOR_OFF_COLOR; 448 } else if ((u_int)off < START_SPECIAL) { 449 /* 450 * hole 451 */ 452 poff = 0; /* XXX */ 453 } else if ((u_int)off == START_SPECIAL) { 454 /* 455 * colour map (Brooktree) 456 */ 457 poff = PFOUR_COLOR_OFF_CMAP; 458 } else if ((u_int)off == START_SPECIAL + PAGE_SIZE) { 459 /* 460 * p4 register 461 */ 462 poff = 0; 463 } else if ((u_int)off > (START_SPECIAL + (PAGE_SIZE * 2)) && 464 (u_int) off < (START_SPECIAL + (PAGE_SIZE * 2) + PROMSIZE)) { 465 /* 466 * rom 467 */ 468 poff = 0x8000 + (off - (START_SPECIAL + (PAGE_SIZE * 2))); 469 } else 470 return (-1); 471 472 return (bus_space_mmap(sc->sc_bustag, 473 sc->sc_paddr, poff, 474 prot, BUS_SPACE_MAP_LINEAR)); 475 } 476 477 #if defined(SUN4) 478 /* 479 * Undo the effect of an FBIOSVIDEO that turns the video off. 480 */ 481 static void 482 cgeightunblank(struct device *dev) 483 { 484 485 cgeight_set_video((struct cgeight_softc *)dev, 1); 486 } 487 488 static int 489 cgeight_get_video(struct cgeight_softc *sc) 490 { 491 492 return (fb_pfour_get_video(&sc->sc_fb)); 493 } 494 495 static void 496 cgeight_set_video(struct cgeight_softc *sc, int enable) 497 { 498 499 fb_pfour_set_video(&sc->sc_fb, enable); 500 } 501 502 /* 503 * Load a subset of the current (new) colormap into the Brooktree DAC. 504 */ 505 static void 506 cgeightloadcmap(struct cgeight_softc *sc, int start, int ncolors) 507 { 508 volatile struct bt_regs *bt; 509 u_int *ip; 510 int count; 511 512 ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */ 513 count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3; 514 bt = &sc->sc_fbc->fbc_dac; 515 bt->bt_addr = BT_D4M4(start); 516 while (--count >= 0) 517 bt->bt_cmap = *ip++; 518 } 519 #endif /* SUN4 */ 520