1/* $NetBSD: cgeight.c,v 1.46 2008/06/11 21:25:31 drochner 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 1.46 2008/06/11 21:25:31 drochner 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 */ 129struct cgeight_softc { 130 struct fbdevice sc_fb; /* frame buffer device */ 131 bus_space_tag_t sc_bustag; 132 bus_addr_t sc_paddr; /* phys address for device mmap() */ 133 134 volatile struct fbcontrol *sc_fbc; /* Brooktree registers */ 135 union bt_cmap sc_cmap; /* Brooktree color map */ 136}; 137 138/* autoconfiguration driver */ 139static void cgeightattach(device_t, device_t, void *); 140static int cgeightmatch(device_t, cfdata_t, void *); 141#if defined(SUN4) 142static void cgeightunblank(device_t); 143#endif 144 145static int cg8_pfour_probe(void *, void *); 146 147CFATTACH_DECL_NEW(cgeight, sizeof(struct cgeight_softc), 148 cgeightmatch, cgeightattach, NULL, NULL); 149 150extern struct cfdriver cgeight_cd; 151 152dev_type_open(cgeightopen); 153dev_type_ioctl(cgeightioctl); 154dev_type_mmap(cgeightmmap); 155 156const struct cdevsw cgeight_cdevsw = { 157 cgeightopen, nullclose, noread, nowrite, cgeightioctl, 158 nostop, notty, nopoll, cgeightmmap, nokqfilter 159}; 160 161#if defined(SUN4) 162/* frame buffer generic driver */ 163static struct fbdriver cgeightfbdriver = { 164 cgeightunblank, cgeightopen, nullclose, cgeightioctl, 165 nopoll, cgeightmmap, nokqfilter 166}; 167 168static void cgeightloadcmap(struct cgeight_softc *, int, int); 169static int cgeight_get_video(struct cgeight_softc *); 170static void cgeight_set_video(struct cgeight_softc *, int); 171#endif 172 173/* 174 * Match a cgeight. 175 */ 176static int 177cgeightmatch(device_t parent, cfdata_t cf, void *aux) 178{ 179 union obio_attach_args *uoba = aux; 180 struct obio4_attach_args *oba; 181 182 if (uoba->uoba_isobio4 == 0) 183 return (0); 184 185 oba = &uoba->uoba_oba4; 186 return (bus_space_probe(oba->oba_bustag, oba->oba_paddr, 187 4, /* probe size */ 188 0, /* offset */ 189 0, /* flags */ 190 cg8_pfour_probe, NULL)); 191} 192 193static int 194cg8_pfour_probe(void *vaddr, void *arg) 195{ 196 197 return (fb_pfour_id(vaddr) == PFOUR_ID_COLOR24); 198} 199 200/* 201 * Attach a display. We need to notice if it is the console, too. 202 */ 203static void 204cgeightattach(device_t parent, device_t self, void *aux) 205{ 206#if defined(SUN4) 207 union obio_attach_args *uoba = aux; 208 struct obio4_attach_args *oba = &uoba->uoba_oba4; 209 struct cgeight_softc *sc = device_private(self); 210 struct fbdevice *fb = &sc->sc_fb; 211 bus_space_handle_t bh; 212 volatile struct bt_regs *bt; 213 int ramsize, i, isconsole; 214 215 sc->sc_bustag = oba->oba_bustag; 216 sc->sc_paddr = (bus_addr_t)oba->oba_paddr; 217 218 /* Map the pfour register. */ 219 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 220 sizeof(uint32_t), 221 BUS_SPACE_MAP_LINEAR, 222 &bh) != 0) { 223 printf("%s: cannot map pfour register\n", 224 device_xname(self)); 225 return; 226 } 227 fb->fb_pfour = (volatile uint32_t *)bh; 228 229 fb->fb_driver = &cgeightfbdriver; 230 fb->fb_device = self; 231 fb->fb_type.fb_type = FBTYPE_MEMCOLOR; 232 fb->fb_flags = device_cfdata(self)->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", 289 device_xname(self)); 290 return; 291 } 292 sc->sc_fbc = (volatile struct fbcontrol *)bh; 293 294#if 0 /* XXX thorpej ??? */ 295 /* tell the enable plane to look at the mono image */ 296 memset(ca->ca_ra.ra_vaddr, 0xff, 297 sc->sc_fb.fb_type.fb_width * sc->sc_fb.fb_type.fb_height / 8); 298#endif 299 300 /* grab initial (current) color map */ 301 bt = &sc->sc_fbc->fbc_dac; 302 bt->bt_addr = 0; 303 for (i = 0; i < 256 * 3 / 4; i++) 304 sc->sc_cmap.cm_chip[i] = bt->bt_cmap; 305 306 BT_INIT(bt, 0); 307 308#if 0 /* see above */ 309 if (isconsole) { 310 printf(" (console)\n"); 311#if defined(RASTERCONSOLE) && 0 /* XXX been told it doesn't work well. */ 312 fbrcons_init(fb); 313#endif 314 } else 315#endif /* 0 */ 316 printf("\n"); 317 318 /* 319 * Even though we're not using rconsole, we'd still like 320 * to notice if we're the console framebuffer. 321 */ 322 fb_attach(&sc->sc_fb, isconsole); 323#endif 324} 325 326int 327cgeightopen(dev_t dev, int flags, int mode, struct lwp *l) 328{ 329 int unit = minor(dev); 330 331 if (device_lookup(&cgeight_cd, unit) == NULL) 332 return (ENXIO); 333 return (0); 334} 335 336int 337cgeightioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 338{ 339#if defined(SUN4) 340 struct cgeight_softc *sc = device_lookup_private(&cgeight_cd, 341 minor(dev)); 342 struct fbgattr *fba; 343 int error; 344 345 switch (cmd) { 346 347 case FBIOGTYPE: 348 *(struct fbtype *)data = sc->sc_fb.fb_type; 349 break; 350 351 case FBIOGATTR: 352 fba = (struct fbgattr *)data; 353 fba->real_type = sc->sc_fb.fb_type.fb_type; 354 fba->owner = 0; /* XXX ??? */ 355 fba->fbtype = sc->sc_fb.fb_type; 356 fba->sattr.flags = 0; 357 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 358 fba->sattr.dev_specific[0] = -1; 359 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 360 fba->emu_types[1] = -1; 361 break; 362 363 case FBIOGETCMAP: 364#define p ((struct fbcmap *)data) 365 return (bt_getcmap(p, &sc->sc_cmap, 256, 1)); 366 367 case FBIOPUTCMAP: 368 /* copy to software map */ 369 error = bt_putcmap(p, &sc->sc_cmap, 256, 1); 370 if (error) 371 return (error); 372 /* now blast them into the chip */ 373 /* XXX should use retrace interrupt */ 374 cgeightloadcmap(sc, p->index, p->count); 375#undef p 376 break; 377 378 case FBIOGVIDEO: 379 *(int *)data = cgeight_get_video(sc); 380 break; 381 382 case FBIOSVIDEO: 383 cgeight_set_video(sc, *(int *)data); 384 break; 385 386 default: 387 return (ENOTTY); 388 } 389#endif /* SUN4 */ 390 391 return (0); 392} 393 394/* 395 * Return the address that would map the given device at the given 396 * offset, allowing for the given protection, or return -1 for error. 397 * 398 * The cg8 maps it's overlay plane at 0 for 128K, followed by the 399 * enable plane for 128K, followed by the colour for as long as it 400 * goes. Starting at 8MB, it maps the ramdac for PAGE_SIZE, then the p4 401 * register for PAGE_SIZE, then the bootrom for 0x40000. 402 */ 403paddr_t 404cgeightmmap(dev_t dev, off_t off, int prot) 405{ 406 struct cgeight_softc *sc = device_lookup_private(&cgeight_cd, 407 minor(dev)); 408 off_t poff; 409 410#define START_ENABLE (128*1024) 411#define START_COLOR ((128*1024) + (128*1024)) 412#define COLOR_SIZE (sc->sc_fb.fb_type.fb_width * \ 413 sc->sc_fb.fb_type.fb_height * 3) 414#define END_COLOR (START_COLOR + COLOR_SIZE) 415#define START_SPECIAL 0x800000 416#define PROMSIZE 0x40000 417#define NOOVERLAY (0x04000000) 418 419 if (off & PGOFSET) 420 panic("cgeightmap"); 421 422 if (off < 0) 423 return (-1); 424 else if ((u_int)off >= NOOVERLAY) { 425 off -= NOOVERLAY; 426 427 /* 428 * X11 maps a huge chunk of the frame buffer; far more than 429 * there really is. We compensate by double-mapping the 430 * first page for as many other pages as it wants 431 */ 432 while ((u_int)off >= COLOR_SIZE) 433 off -= COLOR_SIZE; /* XXX thorpej ??? */ 434 435 poff = off + PFOUR_COLOR_OFF_COLOR; 436 } else if ((u_int)off < START_ENABLE) { 437 /* 438 * in overlay plane 439 */ 440 poff = PFOUR_COLOR_OFF_OVERLAY + off; 441 } else if ((u_int)off < START_COLOR) { 442 /* 443 * in enable plane 444 */ 445 poff = (off - START_ENABLE) + PFOUR_COLOR_OFF_ENABLE; 446 } else if ((u_int)off < sc->sc_fb.fb_type.fb_size) { 447 /* 448 * in colour plane 449 */ 450 poff = (off - START_COLOR) + PFOUR_COLOR_OFF_COLOR; 451 } else if ((u_int)off < START_SPECIAL) { 452 /* 453 * hole 454 */ 455 poff = 0; /* XXX */ 456 } else if ((u_int)off == START_SPECIAL) { 457 /* 458 * colour map (Brooktree) 459 */ 460 poff = PFOUR_COLOR_OFF_CMAP; 461 } else if ((u_int)off == START_SPECIAL + PAGE_SIZE) { 462 /* 463 * p4 register 464 */ 465 poff = 0; 466 } else if ((u_int)off > (START_SPECIAL + (PAGE_SIZE * 2)) && 467 (u_int) off < (START_SPECIAL + (PAGE_SIZE * 2) + PROMSIZE)) { 468 /* 469 * rom 470 */ 471 poff = 0x8000 + (off - (START_SPECIAL + (PAGE_SIZE * 2))); 472 } else 473 return (-1); 474 475 return (bus_space_mmap(sc->sc_bustag, 476 sc->sc_paddr, poff, 477 prot, BUS_SPACE_MAP_LINEAR)); 478} 479 480#if defined(SUN4) 481/* 482 * Undo the effect of an FBIOSVIDEO that turns the video off. 483 */ 484static void 485cgeightunblank(device_t dev) 486{ 487 488 cgeight_set_video(device_private(dev), 1); 489} 490 491static int 492cgeight_get_video(struct cgeight_softc *sc) 493{ 494 495 return (fb_pfour_get_video(&sc->sc_fb)); 496} 497 498static void 499cgeight_set_video(struct cgeight_softc *sc, int enable) 500{ 501 502 fb_pfour_set_video(&sc->sc_fb, enable); 503} 504 505/* 506 * Load a subset of the current (new) colormap into the Brooktree DAC. 507 */ 508static void 509cgeightloadcmap(struct cgeight_softc *sc, int start, int ncolors) 510{ 511 volatile struct bt_regs *bt; 512 u_int *ip; 513 int count; 514 515 ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */ 516 count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3; 517 bt = &sc->sc_fbc->fbc_dac; 518 bt->bt_addr = BT_D4M4(start); 519 while (--count >= 0) 520 bt->bt_cmap = *ip++; 521} 522#endif /* SUN4 */ 523