1 /* $NetBSD: cgfour.c,v 1.52 2026/05/25 13:47:08 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 * 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 (cgfour) 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 "wsdisplay.h" 105 106 #include <sys/cdefs.h> 107 __KERNEL_RCSID(0, "$NetBSD: cgfour.c,v 1.52 2026/05/25 13:47:08 christos Exp $"); 108 109 #include <sys/param.h> 110 #include <sys/systm.h> 111 #include <sys/buf.h> 112 #include <sys/device.h> 113 #include <sys/ioctl.h> 114 #include <sys/mman.h> 115 #include <sys/tty.h> 116 #include <sys/conf.h> 117 118 #include <machine/autoconf.h> 119 #include <machine/eeprom.h> 120 121 #include <dev/sun/fbio.h> 122 #include <dev/sun/fbvar.h> 123 #include <dev/sun/btreg.h> 124 #include <dev/sun/btvar.h> 125 #include <dev/sun/pfourreg.h> 126 127 #if NWSDISPLAY > 0 128 #include <dev/wscons/wsconsio.h> 129 #include <dev/wscons/wsdisplay_vconsvar.h> 130 #include <dev/wsfont/wsfont.h> 131 #include <dev/rasops/rasops.h> 132 133 #include "opt_wsemul.h" 134 #endif 135 136 #define CGFOUR_OVERLAY_SIZE 0x20000 137 #define CGFOUR_RAM_SIZE 0x100000 /* All our cgfour's are 1MB */ 138 139 /* per-display variables */ 140 struct cgfour_softc { 141 struct fbdevice sc_fb; /* frame buffer device */ 142 bus_space_tag_t sc_bustag; 143 bus_addr_t sc_paddr; /* phys address for device mmap() */ 144 145 volatile struct fbcontrol *sc_fbc; /* Brooktree registers */ 146 #if NWSDISPLAY > 0 147 uint32_t sc_width; 148 uint32_t sc_height; /* display width / height */ 149 uint32_t sc_stride; 150 int sc_mode; 151 struct vcons_data sc_vd; 152 char *sc_overlay; 153 char *sc_enable; 154 #endif 155 union bt_cmap sc_cmap; /* Brooktree color map */ 156 }; 157 158 /* autoconfiguration driver */ 159 static int cgfourmatch(device_t, cfdata_t, void *); 160 static void cgfourattach(device_t, device_t, void *); 161 162 #if defined(SUN4) 163 static void cgfourunblank(device_t); 164 #endif 165 166 static int cg4_pfour_probe(void *, void *); 167 168 CFATTACH_DECL_NEW(cgfour, sizeof(struct cgfour_softc), 169 cgfourmatch, cgfourattach, NULL, NULL); 170 171 extern struct cfdriver cgfour_cd; 172 173 dev_type_open(cgfouropen); 174 dev_type_ioctl(cgfourioctl); 175 dev_type_mmap(cgfourmmap); 176 177 const struct cdevsw cgfour_cdevsw = { 178 .d_open = cgfouropen, 179 .d_close = nullclose, 180 .d_read = noread, 181 .d_write = nowrite, 182 .d_ioctl = cgfourioctl, 183 .d_stop = nostop, 184 .d_tty = notty, 185 .d_poll = nopoll, 186 .d_mmap = cgfourmmap, 187 .d_kqfilter = nokqfilter, 188 .d_discard = nodiscard, 189 .d_flag = 0 190 }; 191 192 #if defined(SUN4) 193 /* frame buffer generic driver */ 194 static struct fbdriver cgfourfbdriver = { 195 cgfourunblank, cgfouropen, nullclose, cgfourioctl, nopoll, 196 cgfourmmap, nokqfilter 197 }; 198 199 static void cgfourloadcmap(struct cgfour_softc *, int, int); 200 static int cgfour_get_video(struct cgfour_softc *); 201 static void cgfour_set_video(struct cgfour_softc *, int); 202 203 #if NWSDISPLAY > 0 204 static void cgfour_setup_palette(struct cgfour_softc *); 205 206 struct wsscreen_descr cgfour_defaultscreen = { 207 "std", 208 0, 0, /* will be filled in -- XXX shouldn't, it's global */ 209 NULL, /* textops */ 210 8, 16, /* font width/height */ 211 WSSCREEN_WSCOLORS, /* capabilities */ 212 NULL /* modecookie */ 213 }; 214 215 static int cgfour_ioctl(void *, void *, u_long, void *, int, struct lwp *); 216 static paddr_t cgfour_mmap(void *, void *, off_t, int); 217 static void cgfour_init_screen(void *, struct vcons_screen *, int, long *); 218 static void cgfour_clear_screen(struct cgfour_softc *, int); 219 220 static int cgfour_putcmap(struct cgfour_softc *, struct wsdisplay_cmap *); 221 static int cgfour_getcmap(struct cgfour_softc *, struct wsdisplay_cmap *); 222 223 struct wsdisplay_accessops cgfour_accessops = { 224 .ioctl = cgfour_ioctl, 225 .mmap = cgfour_mmap, 226 .alloc_screen = NULL, 227 .free_screen = NULL, 228 .show_screen = NULL, 229 .load_font = NULL, 230 .pollc = NULL, 231 .scroll = NULL 232 }; 233 234 const struct wsscreen_descr *_cgfour_scrlist[] = { 235 &cgfour_defaultscreen 236 }; 237 238 struct wsscreen_list cgfour_screenlist = { 239 .nscreens = sizeof(_cgfour_scrlist) / sizeof(struct wsscreen_descr *), 240 .screens = _cgfour_scrlist 241 }; 242 243 static struct vcons_screen cgfour_console_screen; 244 #endif /* NWSDISPLAY > 0 */ 245 #endif /* SUN4 */ 246 /* 247 * Match a cgfour. 248 */ 249 static int 250 cgfourmatch(device_t parent, cfdata_t cf, void *aux) 251 { 252 union obio_attach_args *uoba = aux; 253 struct obio4_attach_args *oba; 254 255 if (uoba->uoba_isobio4 == 0) 256 return (0); 257 258 oba = &uoba->uoba_oba4; 259 return (bus_space_probe(oba->oba_bustag, oba->oba_paddr, 260 4, /* probe size */ 261 0, /* offset */ 262 0, /* flags */ 263 cg4_pfour_probe, NULL)); 264 } 265 266 static int 267 cg4_pfour_probe(void *vaddr, void *arg) 268 { 269 270 return (fb_pfour_id(vaddr) == PFOUR_ID_COLOR8P1); 271 } 272 273 /* 274 * Attach a display. We need to notice if it is the console, too. 275 */ 276 static void 277 cgfourattach(device_t parent, device_t self, void *aux) 278 { 279 #if defined(SUN4) 280 struct cgfour_softc *sc = device_private(self); 281 union obio_attach_args *uoba = aux; 282 struct obio4_attach_args *oba = &uoba->uoba_oba4; 283 bus_space_handle_t bh; 284 volatile struct bt_regs *bt; 285 struct fbdevice *fb = &sc->sc_fb; 286 int i, isconsole; 287 #if NWSDISPLAY > 0 288 struct wsemuldisplaydev_attach_args wsemul_aa; 289 struct rasops_info *ri = &cgfour_console_screen.scr_ri; 290 unsigned long defattr = 0; 291 #endif 292 sc->sc_bustag = oba->oba_bustag; 293 sc->sc_paddr = (bus_addr_t)oba->oba_paddr; 294 295 /* Map the pfour register. */ 296 if (bus_space_map(oba->oba_bustag, oba->oba_paddr, 297 sizeof(uint32_t), 298 BUS_SPACE_MAP_LINEAR, 299 &bh) != 0) { 300 printf("%s: cannot map control registers\n", 301 device_xname(self)); 302 return; 303 } 304 fb->fb_pfour = (volatile uint32_t *)bh; 305 306 fb->fb_driver = &cgfourfbdriver; 307 fb->fb_device = self; 308 fb->fb_type.fb_type = FBTYPE_SUN4COLOR; 309 fb->fb_flags = device_cfdata(self)->cf_flags & FB_USERMASK; 310 fb->fb_flags |= FB_PFOUR; 311 312 313 fb->fb_type.fb_depth = 8; 314 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 315 316 fb->fb_type.fb_cmsize = 256; 317 fb->fb_type.fb_size = CGFOUR_RAM_SIZE; 318 printf(": cgfour/p4, %d x %d", 319 fb->fb_type.fb_width, fb->fb_type.fb_height); 320 321 isconsole = 0; 322 323 if (CPU_ISSUN4) { 324 struct eeprom *eep = (struct eeprom *)eeprom_va; 325 326 /* 327 * Assume this is the console if there's no eeprom info 328 * to be found. 329 */ 330 if (eep == NULL || eep->eeConsole == EE_CONS_P4OPT) 331 isconsole = fb_is_console(0); 332 } 333 334 /* 335 * When the ROM has mapped in a cgfour display, the address 336 * maps only the video RAM, so in any case we have to map the 337 * registers ourselves. 338 */ 339 340 if (isconsole) { 341 /* Map the framebuffers. */ 342 if (bus_space_map(oba->oba_bustag, 343 oba->oba_paddr + PFOUR_COLOR_OFF_OVERLAY, 344 CGFOUR_OVERLAY_SIZE, 345 BUS_SPACE_MAP_LINEAR, 346 &bh) != 0) { 347 printf("%s: cannot map overlay plane\n", 348 device_xname(self)); 349 return; 350 } 351 sc->sc_overlay = (char *)bh; 352 353 if (bus_space_map(oba->oba_bustag, 354 oba->oba_paddr + PFOUR_COLOR_OFF_ENABLE, 355 CGFOUR_OVERLAY_SIZE, 356 BUS_SPACE_MAP_LINEAR, 357 &bh) != 0) { 358 printf("%s: cannot map enable plane\n", 359 device_xname(self)); 360 return; 361 } 362 sc->sc_enable = (char *)bh; 363 364 if (bus_space_map(oba->oba_bustag, 365 oba->oba_paddr + PFOUR_COLOR_OFF_COLOR, 366 CGFOUR_RAM_SIZE, 367 BUS_SPACE_MAP_LINEAR, 368 &bh) != 0) { 369 printf("%s: cannot map pixels\n", 370 device_xname(self)); 371 return; 372 } 373 fb->fb_pixels = (char *)bh; 374 } 375 376 /* Map the Brooktree. */ 377 if (bus_space_map(oba->oba_bustag, 378 oba->oba_paddr + PFOUR_COLOR_OFF_CMAP, 379 sizeof(struct fbcontrol), 380 BUS_SPACE_MAP_LINEAR, 381 &bh) != 0) { 382 printf("%s: cannot map control registers\n", 383 device_xname(self)); 384 return; 385 } 386 sc->sc_fbc = (volatile struct fbcontrol *)bh; 387 388 /* grab initial (current) color map */ 389 bt = &sc->sc_fbc->fbc_dac; 390 bt->bt_addr = 0; 391 for (i = 0; i < 256 * 3 / 4; i++) 392 ((char *)&sc->sc_cmap)[i] = bt->bt_cmap >> 24; 393 394 BT_INIT(bt, 24); 395 396 if (isconsole) { 397 printf(" (console)\n"); 398 } else 399 printf("\n"); 400 401 /* 402 * Even though we're not using rconsole, we'd still like 403 * to notice if we're the console framebuffer. 404 */ 405 fb_attach(fb, isconsole); 406 407 #if NWSDISPLAY > 0 408 sc->sc_width = fb->fb_type.fb_width; 409 sc->sc_stride = fb->fb_type.fb_width; 410 sc->sc_height = fb->fb_type.fb_height; 411 412 /* setup rasops and so on for wsdisplay */ 413 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 414 415 vcons_init(&sc->sc_vd, sc, &cgfour_defaultscreen, &cgfour_accessops); 416 sc->sc_vd.init_screen = cgfour_init_screen; 417 418 if (isconsole) { 419 /* we mess with cgfour_console_screen only once */ 420 vcons_init_screen(&sc->sc_vd, &cgfour_console_screen, 1, 421 &defattr); 422 cgfour_clear_screen(sc, (defattr >> 16) & 0xff); 423 cgfour_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 424 425 cgfour_defaultscreen.textops = &ri->ri_ops; 426 cgfour_defaultscreen.capabilities = ri->ri_caps; 427 cgfour_defaultscreen.nrows = ri->ri_rows; 428 cgfour_defaultscreen.ncols = ri->ri_cols; 429 SCREEN_VISIBLE(&cgfour_console_screen); 430 sc->sc_vd.active = &cgfour_console_screen; 431 wsdisplay_cnattach(&cgfour_defaultscreen, ri, 0, 0, defattr); 432 vcons_replay_msgbuf(&cgfour_console_screen); 433 } else { 434 /* 435 * we're not the console so we just clear the screen and don't 436 * set up any sort of text display 437 */ 438 } 439 440 /* Initialize the default color map. */ 441 cgfour_setup_palette(sc); 442 443 wsemul_aa.scrdata = &cgfour_screenlist; 444 wsemul_aa.console = isconsole; 445 wsemul_aa.accessops = &cgfour_accessops; 446 wsemul_aa.accesscookie = &sc->sc_vd; 447 config_found(self, &wsemul_aa, wsemuldisplaydevprint, 448 CFARGS_NONE); 449 #endif /* NWSDISPLAY > 0 */ 450 #endif /* SUN4 */ 451 } 452 453 int 454 cgfouropen(dev_t dev, int flags, int mode, struct lwp *l) 455 { 456 int unit = minor(dev); 457 458 if (device_lookup(&cgfour_cd, unit) == NULL) 459 return (ENXIO); 460 return (0); 461 } 462 463 int 464 cgfourioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 465 { 466 #if defined(SUN4) 467 struct cgfour_softc *sc = device_lookup_private(&cgfour_cd, minor(dev)); 468 struct fbgattr *fba; 469 int error; 470 471 switch (cmd) { 472 473 case FBIOGTYPE: 474 *(struct fbtype *)data = sc->sc_fb.fb_type; 475 break; 476 477 case FBIOGATTR: 478 fba = (struct fbgattr *)data; 479 fba->real_type = sc->sc_fb.fb_type.fb_type; 480 fba->owner = 0; /* XXX ??? */ 481 fba->fbtype = sc->sc_fb.fb_type; 482 fba->sattr.flags = 0; 483 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 484 fba->sattr.dev_specific[0] = -1; 485 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 486 fba->emu_types[1] = -1; 487 break; 488 489 case FBIOGETCMAP: 490 #define p ((struct fbcmap *)data) 491 return (bt_getcmap(p, &sc->sc_cmap, 256, 1)); 492 493 case FBIOPUTCMAP: 494 /* copy to software map */ 495 error = bt_putcmap(p, &sc->sc_cmap, 256, 1); 496 if (error) 497 return (error); 498 /* now blast them into the chip */ 499 /* XXX should use retrace interrupt */ 500 cgfourloadcmap(sc, p->index, p->count); 501 #undef p 502 break; 503 504 case FBIOGVIDEO: 505 *(int *)data = cgfour_get_video(sc); 506 break; 507 508 case FBIOSVIDEO: 509 cgfour_set_video(sc, *(int *)data); 510 break; 511 512 default: 513 return (ENOTTY); 514 } 515 #endif /* SUN4 */ 516 517 return (0); 518 } 519 520 /* 521 * Return the address that would map the given device at the given 522 * offset, allowing for the given protection, or return -1 for error. 523 * 524 * the cg4 maps its overlay plane for 128K, followed by the enable 525 * plane for 128K, followed by the colour plane (for as much colour 526 * as their is.) 527 * 528 * As well, mapping at an offset of 0x04000000 causes the cg4 to map 529 * only its colour plane, at 0. 530 */ 531 paddr_t 532 cgfourmmap(dev_t dev, off_t off, int prot) 533 { 534 struct cgfour_softc *sc = device_lookup_private(&cgfour_cd, minor(dev)); 535 off_t poff; 536 537 #define START_ENABLE (128*1024) 538 #define START_COLOR ((128*1024) + (128*1024)) 539 #define COLOR_SIZE (sc->sc_fb.fb_type.fb_width * \ 540 sc->sc_fb.fb_type.fb_height) 541 #define END_COLOR (START_COLOR + COLOR_SIZE) 542 #define NOOVERLAY (0x04000000) 543 544 if (off & PGOFSET) 545 panic("cgfourmap"); 546 547 if (off < 0) 548 return (-1); 549 else if ((u_int)off >= NOOVERLAY) { 550 off -= NOOVERLAY; 551 552 /* 553 * X11 maps a huge chunk of the frame buffer; far more than 554 * there really is. We compensate by double-mapping the 555 * first page for as many other pages as it wants 556 */ 557 while ((u_int)off >= COLOR_SIZE) 558 off -= COLOR_SIZE; /* XXX thorpej ??? */ 559 560 poff = off + PFOUR_COLOR_OFF_COLOR; 561 } else if ((u_int)off < START_ENABLE) { 562 /* 563 * in overlay plane 564 */ 565 poff = PFOUR_COLOR_OFF_OVERLAY + off; 566 } else if ((u_int)off < START_COLOR) { 567 /* 568 * in enable plane 569 */ 570 poff = (off - START_ENABLE) + PFOUR_COLOR_OFF_ENABLE; 571 } else if ((u_int)off < sc->sc_fb.fb_type.fb_size) { 572 /* 573 * in colour plane 574 */ 575 poff = (off - START_COLOR) + PFOUR_COLOR_OFF_COLOR; 576 } else 577 return (-1); 578 579 return (bus_space_mmap(sc->sc_bustag, 580 sc->sc_paddr, poff, 581 prot, BUS_SPACE_MAP_LINEAR)); 582 } 583 584 #if defined(SUN4) 585 /* 586 * Undo the effect of an FBIOSVIDEO that turns the video off. 587 */ 588 static void 589 cgfourunblank(device_t dev) 590 { 591 592 cgfour_set_video(device_private(dev), 1); 593 } 594 595 static int 596 cgfour_get_video(struct cgfour_softc *sc) 597 { 598 599 return (fb_pfour_get_video(&sc->sc_fb)); 600 } 601 602 static void 603 cgfour_set_video(struct cgfour_softc *sc, int enable) 604 { 605 606 fb_pfour_set_video(&sc->sc_fb, enable); 607 } 608 609 /* 610 * Load a subset of the current (new) colormap into the Brooktree DAC. 611 */ 612 static void 613 cgfourloadcmap(struct cgfour_softc *sc, int start, int ncolors) 614 { 615 volatile struct bt_regs *bt; 616 u_int *ip, i; 617 int count; 618 619 ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */ 620 count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3; 621 bt = &sc->sc_fbc->fbc_dac; 622 bt->bt_addr = BT_D4M4(start) << 24; 623 while (--count >= 0) { 624 i = *ip++; 625 /* hardware that makes one want to pound boards with hammers */ 626 bt->bt_cmap = i; 627 bt->bt_cmap = i << 8; 628 bt->bt_cmap = i << 16; 629 bt->bt_cmap = i << 24; 630 } 631 } 632 633 #if NWSDISPLAY > 0 634 static void 635 cgfour_setup_palette(struct cgfour_softc *sc) 636 { 637 int i, j; 638 639 j = 0; 640 for (i = 0; i < 256; i++) { 641 sc->sc_cmap.cm_map[i][0] = rasops_cmap[j]; 642 j++; 643 sc->sc_cmap.cm_map[i][1] = rasops_cmap[j]; 644 j++; 645 sc->sc_cmap.cm_map[i][2] = rasops_cmap[j]; 646 j++; 647 } 648 cgfourloadcmap(sc, 0, 256); 649 } 650 651 static int 652 cgfour_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 653 struct lwp *l) 654 { 655 /* we'll probably need to add more stuff here */ 656 struct vcons_data *vd = v; 657 struct cgfour_softc *sc = vd->cookie; 658 struct wsdisplay_fbinfo *wdf; 659 struct vcons_screen *ms = sc->sc_vd.active; 660 struct rasops_info *ri = &ms->scr_ri; 661 switch (cmd) { 662 case WSDISPLAYIO_GTYPE: 663 *(u_int *)data = WSDISPLAY_TYPE_SUNTCX; /* XXX */ 664 return 0; 665 case WSDISPLAYIO_GINFO: 666 wdf = (void *)data; 667 wdf->height = ri->ri_height; 668 wdf->width = ri->ri_width; 669 wdf->depth = 8; 670 wdf->cmsize = 256; 671 return 0; 672 673 case WSDISPLAYIO_GETCMAP: 674 return cgfour_getcmap(sc, 675 (struct wsdisplay_cmap *)data); 676 case WSDISPLAYIO_PUTCMAP: 677 return cgfour_putcmap(sc, 678 (struct wsdisplay_cmap *)data); 679 680 case WSDISPLAYIO_SMODE: 681 { 682 int new_mode = *(int *)data; 683 684 if (new_mode != sc->sc_mode) { 685 sc->sc_mode = new_mode; 686 if (new_mode == WSDISPLAYIO_MODE_EMUL) { 687 cgfour_setup_palette(sc); 688 cgfour_clear_screen(sc, 0xff); 689 vcons_redraw_screen(ms); 690 } 691 } 692 } 693 return 0; 694 case WSDISPLAYIO_GET_FBINFO: 695 { 696 struct wsdisplayio_fbinfo *fbi = data; 697 698 return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); 699 } 700 } 701 return EPASSTHROUGH; 702 } 703 704 static paddr_t 705 cgfour_mmap(void *v, void *vs, off_t offset, int prot) 706 { 707 struct vcons_data *vd = v; 708 struct cgfour_softc *sc = vd->cookie; 709 paddr_t cookie = -1; 710 711 switch (sc->sc_mode) { 712 case WSDISPLAYIO_MODE_DUMBFB: 713 if (offset >= 0 && offset <= sc->sc_fb.fb_type.fb_size) { 714 cookie = bus_space_mmap(sc->sc_bustag, 715 sc->sc_paddr, PFOUR_COLOR_OFF_COLOR + offset, 716 prot, BUS_SPACE_MAP_LINEAR); 717 } 718 break; 719 default: 720 break; 721 } 722 723 return cookie; 724 } 725 726 static int 727 cgfour_putcmap(struct cgfour_softc *sc, struct wsdisplay_cmap *cm) 728 { 729 u_int index = cm->index; 730 u_int count = cm->count; 731 int error,i; 732 if (index >= 256 || count > 256 || index + count > 256) 733 return EINVAL; 734 735 for (i = 0; i < count; i++) 736 { 737 error = copyin(&cm->red[i], 738 &sc->sc_cmap.cm_map[index + i][0], 1); 739 if (error) 740 return error; 741 error = copyin(&cm->green[i], 742 &sc->sc_cmap.cm_map[index + i][1], 743 1); 744 if (error) 745 return error; 746 error = copyin(&cm->blue[i], 747 &sc->sc_cmap.cm_map[index + i][2], 1); 748 if (error) 749 return error; 750 } 751 cgfourloadcmap(sc, index, count); 752 753 return 0; 754 } 755 756 static int 757 cgfour_getcmap(struct cgfour_softc *sc, struct wsdisplay_cmap *cm) 758 { 759 u_int index = cm->index; 760 u_int count = cm->count; 761 int error,i; 762 763 if (index >= 256 || count > 256 || index + count > 256) 764 return EINVAL; 765 766 for (i = 0; i < count; i++) 767 { 768 error = copyout(&sc->sc_cmap.cm_map[index + i][0], 769 &cm->red[i], 1); 770 if (error) 771 return error; 772 error = copyout(&sc->sc_cmap.cm_map[index + i][1], 773 &cm->green[i], 1); 774 if (error) 775 return error; 776 error = copyout(&sc->sc_cmap.cm_map[index + i][2], 777 &cm->blue[i], 1); 778 if (error) 779 return error; 780 } 781 782 return 0; 783 } 784 785 static void 786 cgfour_init_screen(void *cookie, struct vcons_screen *scr, 787 int existing, long *defattr) 788 { 789 struct cgfour_softc *sc = cookie; 790 struct rasops_info *ri = &scr->scr_ri; 791 792 scr->scr_flags |= VCONS_DONT_READ; 793 794 ri->ri_depth = 8; 795 ri->ri_width = sc->sc_width; 796 ri->ri_height = sc->sc_height; 797 ri->ri_stride = sc->sc_stride; 798 ri->ri_flg = RI_CENTER; 799 800 ri->ri_bits = sc->sc_fb.fb_pixels; 801 802 rasops_init(ri, 0, 0); 803 ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_REVERSE; 804 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 805 sc->sc_width / ri->ri_font->fontwidth); 806 807 ri->ri_hw = scr; 808 } 809 810 static void 811 cgfour_clear_screen(struct cgfour_softc *sc, int bg) 812 { 813 char *bits; 814 815 /* We can write a maximum of 4 bytes at a time to the framebuffer. */ 816 for (bits = (char *)sc->sc_enable; 817 bits < (char *)sc->sc_enable + CGFOUR_OVERLAY_SIZE; 818 bits += 4) 819 memset(bits, 0x00, 4); 820 821 for (bits = (char *)sc->sc_fb.fb_pixels; 822 bits < (char *)sc->sc_fb.fb_pixels + sc->sc_stride * sc->sc_height; 823 bits += 4) 824 memset(bits, bg, 4); 825 } 826 #endif /* NWSDISPLAY > 0 */ 827 #endif /* SUN4 */ 828
Indexes created Sun Oct 25 00:26:45 UTC 2026