1 /* $NetBSD: cgthree.c,v 1.28 2010/09/14 19:36:13 macallan Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 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 * color display (cgthree) driver. 34 * 35 * Does not handle interrupts, even though they can occur. 36 * 37 * XXX should defer colormap updates to vertical retrace interrupts 38 */ 39 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: cgthree.c,v 1.28 2010/09/14 19:36:13 macallan Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/buf.h> 46 #include <sys/device.h> 47 #include <sys/ioctl.h> 48 #include <sys/malloc.h> 49 #include <sys/mman.h> 50 #include <sys/tty.h> 51 #include <sys/conf.h> 52 53 #include <sys/bus.h> 54 #include <machine/autoconf.h> 55 56 #include <dev/sun/fbio.h> 57 #include <dev/sun/fbvar.h> 58 59 #include <dev/sun/btreg.h> 60 #include <dev/sun/btvar.h> 61 #include <dev/sun/cgthreereg.h> 62 #include <dev/sun/cgthreevar.h> 63 64 #if NWSDISPLAY > 0 65 #include <dev/wscons/wsconsio.h> 66 #include <dev/wsfont/wsfont.h> 67 #include <dev/rasops/rasops.h> 68 69 #include "opt_wsemul.h" 70 #endif 71 72 #include "ioconf.h" 73 74 static void cgthreeunblank(device_t); 75 static void cgthreeloadcmap(struct cgthree_softc *, int, int); 76 static void cgthree_set_video(struct cgthree_softc *, int); 77 static int cgthree_get_video(struct cgthree_softc *); 78 79 dev_type_open(cgthreeopen); 80 dev_type_ioctl(cgthreeioctl); 81 dev_type_mmap(cgthreemmap); 82 83 const struct cdevsw cgthree_cdevsw = { 84 cgthreeopen, nullclose, noread, nowrite, cgthreeioctl, 85 nostop, notty, nopoll, cgthreemmap, nokqfilter, D_OTHER 86 }; 87 88 /* frame buffer generic driver */ 89 static struct fbdriver cgthreefbdriver = { 90 cgthreeunblank, cgthreeopen, nullclose, cgthreeioctl, nopoll, 91 cgthreemmap, nokqfilter 92 }; 93 94 /* Video control parameters */ 95 struct cg3_videoctrl { 96 unsigned char sense; /* Monitor sense value */ 97 unsigned char vctrl[12]; 98 } cg3_videoctrl[] = { 99 /* Missing entries: sense 0x10, 0x30, 0x50 */ 100 { 0x40, /* this happens to be my 19'' 1152x900 gray-scale monitor */ 101 {0xbb, 0x2b, 0x3, 0xb, 0xb3, 0x3, 0xaf, 0x2b, 0x2, 0xa, 0xff, 0x1} 102 }, 103 { 0x00, /* default? must be last */ 104 {0xbb, 0x2b, 0x3, 0xb, 0xb3, 0x3, 0xaf, 0x2b, 0x2, 0xa, 0xff, 0x1} 105 } 106 }; 107 108 #if NWSDISPLAY > 0 109 #ifdef RASTERCONSOLE 110 #error RASTERCONSOLE and wsdisplay are mutually exclusive 111 #endif 112 113 static void cg3_setup_palette(struct cgthree_softc *); 114 115 struct wsscreen_descr cgthree_defaultscreen = { 116 "std", 117 0, 0, /* will be filled in -- XXX shouldn't, it's global */ 118 NULL, /* textops */ 119 8, 16, /* font width/height */ 120 WSSCREEN_WSCOLORS, /* capabilities */ 121 NULL /* modecookie */ 122 }; 123 124 static int cgthree_ioctl(void *, void *, u_long, void *, int, struct lwp *); 125 static paddr_t cgthree_mmap(void *, void *, off_t, int); 126 static void cgthree_init_screen(void *, struct vcons_screen *, int, long *); 127 128 int cgthree_putcmap(struct cgthree_softc *, struct wsdisplay_cmap *); 129 int cgthree_getcmap(struct cgthree_softc *, struct wsdisplay_cmap *); 130 131 struct wsdisplay_accessops cgthree_accessops = { 132 cgthree_ioctl, 133 cgthree_mmap, 134 NULL, /* alloc_screen */ 135 NULL, /* free_screen */ 136 NULL, /* show_screen */ 137 NULL, /* load_font */ 138 NULL, /* pollc */ 139 NULL /* scroll */ 140 }; 141 142 const struct wsscreen_descr *_cgthree_scrlist[] = { 143 &cgthree_defaultscreen 144 }; 145 146 struct wsscreen_list cgthree_screenlist = { 147 sizeof(_cgthree_scrlist) / sizeof(struct wsscreen_descr *), 148 _cgthree_scrlist 149 }; 150 151 152 extern const u_char rasops_cmap[768]; 153 154 static struct vcons_screen cg3_console_screen; 155 #endif /* NWSDISPLAY > 0 */ 156 157 void 158 cgthreeattach(struct cgthree_softc *sc, const char *name, int isconsole) 159 { 160 int i; 161 struct fbdevice *fb = &sc->sc_fb; 162 #if NWSDISPLAY > 0 163 struct wsemuldisplaydev_attach_args aa; 164 struct rasops_info *ri = &cg3_console_screen.scr_ri; 165 unsigned long defattr; 166 #endif 167 volatile struct fbcontrol *fbc = sc->sc_fbc; 168 volatile struct bt_regs *bt = &fbc->fbc_dac; 169 170 fb->fb_driver = &cgthreefbdriver; 171 fb->fb_type.fb_cmsize = 256; 172 fb->fb_type.fb_size = fb->fb_type.fb_height * fb->fb_linebytes; 173 printf(": %s, %d x %d", name, 174 fb->fb_type.fb_width, fb->fb_type.fb_height); 175 176 /* Transfer video magic to board, if it's not running */ 177 if ((fbc->fbc_ctrl & FBC_TIMING) == 0) { 178 int sense = (fbc->fbc_status & FBS_MSENSE); 179 /* Search table for video timings fitting this monitor */ 180 for (i = 0; i < sizeof(cg3_videoctrl)/sizeof(cg3_videoctrl[0]); 181 i++) { 182 int j; 183 if (sense != cg3_videoctrl[i].sense) 184 continue; 185 186 printf(" setting video ctrl"); 187 for (j = 0; j < 12; j++) 188 fbc->fbc_vcontrol[j] = 189 cg3_videoctrl[i].vctrl[j]; 190 fbc->fbc_ctrl |= FBC_TIMING; 191 break; 192 } 193 } 194 195 /* make sure we are not blanked */ 196 cgthree_set_video(sc, 1); 197 BT_INIT(bt, 0); 198 199 if (isconsole) { 200 printf(" (console)\n"); 201 #ifdef RASTERCONSOLE 202 fbrcons_init(fb); 203 #endif 204 } else 205 printf("\n"); 206 207 fb_attach(fb, isconsole); 208 209 #if NWSDISPLAY > 0 210 sc->sc_width = fb->fb_type.fb_width; 211 sc->sc_stride = fb->fb_type.fb_width; 212 sc->sc_height = fb->fb_type.fb_height; 213 214 /* setup rasops and so on for wsdisplay */ 215 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 216 217 vcons_init(&sc->vd, sc, &cgthree_defaultscreen, &cgthree_accessops); 218 sc->vd.init_screen = cgthree_init_screen; 219 220 if(isconsole) { 221 /* we mess with cg3_console_screen only once */ 222 vcons_init_screen(&sc->vd, &cg3_console_screen, 1, 223 &defattr); 224 memset(sc->sc_fb.fb_pixels, (defattr >> 16) & 0xff, 225 sc->sc_stride * sc->sc_height); 226 cg3_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 227 228 cgthree_defaultscreen.textops = &ri->ri_ops; 229 cgthree_defaultscreen.capabilities = ri->ri_caps; 230 cgthree_defaultscreen.nrows = ri->ri_rows; 231 cgthree_defaultscreen.ncols = ri->ri_cols; 232 sc->vd.active = &cg3_console_screen; 233 wsdisplay_cnattach(&cgthree_defaultscreen, ri, 0, 0, defattr); 234 vcons_replay_msgbuf(&cg3_console_screen); 235 } else { 236 /* 237 * we're not the console so we just clear the screen and don't 238 * set up any sort of text display 239 */ 240 } 241 242 /* Initialize the default color map. */ 243 cg3_setup_palette(sc); 244 245 aa.scrdata = &cgthree_screenlist; 246 aa.console = isconsole; 247 aa.accessops = &cgthree_accessops; 248 aa.accesscookie = &sc->vd; 249 config_found(sc->sc_dev, &aa, wsemuldisplaydevprint); 250 #else 251 /* Initialize the default color map. */ 252 bt_initcmap(&sc->sc_cmap, 256); 253 cgthreeloadcmap(sc, 0, 256); 254 #endif 255 256 } 257 258 259 int 260 cgthreeopen(dev_t dev, int flags, int mode, struct lwp *l) 261 { 262 int unit = minor(dev); 263 264 if (device_lookup(&cgthree_cd, unit) == NULL) 265 return (ENXIO); 266 return (0); 267 } 268 269 int 270 cgthreeioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 271 { 272 struct cgthree_softc *sc = device_lookup_private(&cgthree_cd, 273 minor(dev)); 274 struct fbgattr *fba; 275 int error; 276 277 switch (cmd) { 278 279 case FBIOGTYPE: 280 *(struct fbtype *)data = sc->sc_fb.fb_type; 281 break; 282 283 case FBIOGATTR: 284 fba = (struct fbgattr *)data; 285 fba->real_type = sc->sc_fb.fb_type.fb_type; 286 fba->owner = 0; /* XXX ??? */ 287 fba->fbtype = sc->sc_fb.fb_type; 288 fba->sattr.flags = 0; 289 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 290 fba->sattr.dev_specific[0] = -1; 291 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 292 fba->emu_types[1] = -1; 293 break; 294 295 case FBIOGETCMAP: 296 #define p ((struct fbcmap *)data) 297 return (bt_getcmap(p, &sc->sc_cmap, 256, 1)); 298 299 case FBIOPUTCMAP: 300 /* copy to software map */ 301 error = bt_putcmap(p, &sc->sc_cmap, 256, 1); 302 if (error) 303 return (error); 304 /* now blast them into the chip */ 305 /* XXX should use retrace interrupt */ 306 cgthreeloadcmap(sc, p->index, p->count); 307 #undef p 308 break; 309 310 case FBIOGVIDEO: 311 *(int *)data = cgthree_get_video(sc); 312 break; 313 314 case FBIOSVIDEO: 315 cgthree_set_video(sc, *(int *)data); 316 break; 317 318 default: 319 return (ENOTTY); 320 } 321 return (0); 322 } 323 324 /* 325 * Undo the effect of an FBIOSVIDEO that turns the video off. 326 */ 327 static void 328 cgthreeunblank(device_t self) 329 { 330 struct cgthree_softc *sc = device_private(self); 331 332 cgthree_set_video(sc, 1); 333 } 334 335 static void 336 cgthree_set_video(struct cgthree_softc *sc, int enable) 337 { 338 339 if (enable) 340 sc->sc_fbc->fbc_ctrl |= FBC_VENAB; 341 else 342 sc->sc_fbc->fbc_ctrl &= ~FBC_VENAB; 343 } 344 345 static int 346 cgthree_get_video(struct cgthree_softc *sc) 347 { 348 349 return ((sc->sc_fbc->fbc_ctrl & FBC_VENAB) != 0); 350 } 351 352 /* 353 * Load a subset of the current (new) colormap into the Brooktree DAC. 354 */ 355 static void 356 cgthreeloadcmap(struct cgthree_softc *sc, int start, int ncolors) 357 { 358 volatile struct bt_regs *bt; 359 u_int *ip; 360 int count; 361 362 ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */ 363 count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3; 364 bt = &sc->sc_fbc->fbc_dac; 365 bt->bt_addr = BT_D4M4(start); 366 while (--count >= 0) 367 bt->bt_cmap = *ip++; 368 } 369 370 /* 371 * Return the address that would map the given device at the given 372 * offset, allowing for the given protection, or return -1 for error. 373 * 374 * The cg3 is mapped starting at 256KB, for pseudo-compatibility with 375 * the cg4 (which had an overlay plane in the first 128K and an enable 376 * plane in the next 128K). X11 uses only 256k+ region but tries to 377 * map the whole thing, so we repeatedly map the first 256K to the 378 * first page of the color screen. If someone tries to use the overlay 379 * and enable regions, they will get a surprise.... 380 * 381 * As well, mapping at an offset of 0x04000000 causes the cg3 to be 382 * mapped in flat mode without the cg4 emulation. 383 */ 384 paddr_t 385 cgthreemmap(dev_t dev, off_t off, int prot) 386 { 387 struct cgthree_softc *sc = device_lookup_private(&cgthree_cd, 388 minor(dev)); 389 390 #define START (128*1024 + 128*1024) 391 #define NOOVERLAY (0x04000000) 392 393 if (off & PGOFSET) 394 panic("cgthreemmap"); 395 if (off < 0) 396 return (-1); 397 if ((u_int)off >= NOOVERLAY) 398 off -= NOOVERLAY; 399 else if ((u_int)off >= START) 400 off -= START; 401 else 402 off = 0; 403 404 if (off >= sc->sc_fb.fb_type.fb_size) 405 return (-1); 406 407 return (bus_space_mmap(sc->sc_bustag, 408 sc->sc_paddr, CG3REG_MEM + off, 409 prot, BUS_SPACE_MAP_LINEAR)); 410 } 411 412 #if NWSDISPLAY > 0 413 414 static void 415 cg3_setup_palette(struct cgthree_softc *sc) 416 { 417 int i, j; 418 419 j = 0; 420 for (i = 0; i < 256; i++) { 421 sc->sc_cmap.cm_map[i][0] = rasops_cmap[j]; 422 j++; 423 sc->sc_cmap.cm_map[i][1] = rasops_cmap[j]; 424 j++; 425 sc->sc_cmap.cm_map[i][2] = rasops_cmap[j]; 426 j++; 427 } 428 cgthreeloadcmap(sc, 0, 256); 429 } 430 431 int 432 cgthree_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 433 struct lwp *l) 434 { 435 /* we'll probably need to add more stuff here */ 436 struct vcons_data *vd = v; 437 struct cgthree_softc *sc = vd->cookie; 438 struct wsdisplay_fbinfo *wdf; 439 struct rasops_info *ri = &sc->sc_fb.fb_rinfo; 440 struct vcons_screen *ms = sc->vd.active; 441 switch (cmd) { 442 case WSDISPLAYIO_GTYPE: 443 *(u_int *)data = WSDISPLAY_TYPE_SUNTCX; 444 return 0; 445 case WSDISPLAYIO_GINFO: 446 wdf = (void *)data; 447 wdf->height = ri->ri_height; 448 wdf->width = ri->ri_width; 449 wdf->depth = ri->ri_depth; 450 wdf->cmsize = 256; 451 return 0; 452 453 case WSDISPLAYIO_GETCMAP: 454 return cgthree_getcmap(sc, 455 (struct wsdisplay_cmap *)data); 456 case WSDISPLAYIO_PUTCMAP: 457 return cgthree_putcmap(sc, 458 (struct wsdisplay_cmap *)data); 459 460 case WSDISPLAYIO_SMODE: 461 { 462 int new_mode = *(int*)data; 463 if (new_mode != sc->sc_mode) 464 { 465 sc->sc_mode = new_mode; 466 if(new_mode == WSDISPLAYIO_MODE_EMUL) 467 { 468 cg3_setup_palette(sc); 469 vcons_redraw_screen(ms); 470 } 471 } 472 } 473 } 474 return EPASSTHROUGH; 475 } 476 477 paddr_t 478 cgthree_mmap(void *v, void *vs, off_t offset, int prot) 479 { 480 /* I'm not at all sure this is the right thing to do */ 481 return cgthreemmap(0, offset, prot); /* assume minor dev 0 for now */ 482 } 483 484 int 485 cgthree_putcmap(struct cgthree_softc *sc, struct wsdisplay_cmap *cm) 486 { 487 u_int index = cm->index; 488 u_int count = cm->count; 489 int error,i; 490 if (index >= 256 || count > 256 || index + count > 256) 491 return EINVAL; 492 493 for (i = 0; i < count; i++) 494 { 495 error = copyin(&cm->red[i], 496 &sc->sc_cmap.cm_map[index + i][0], 1); 497 if (error) 498 return error; 499 error = copyin(&cm->green[i], 500 &sc->sc_cmap.cm_map[index + i][1], 501 1); 502 if (error) 503 return error; 504 error = copyin(&cm->blue[i], 505 &sc->sc_cmap.cm_map[index + i][2], 1); 506 if (error) 507 return error; 508 } 509 cgthreeloadcmap(sc, index, count); 510 511 return 0; 512 } 513 514 int 515 cgthree_getcmap(struct cgthree_softc *sc, struct wsdisplay_cmap *cm) 516 { 517 u_int index = cm->index; 518 u_int count = cm->count; 519 int error,i; 520 521 if (index >= 256 || count > 256 || index + count > 256) 522 return EINVAL; 523 524 for (i = 0; i < count; i++) 525 { 526 error = copyout(&sc->sc_cmap.cm_map[index + i][0], 527 &cm->red[i], 1); 528 if (error) 529 return error; 530 error = copyout(&sc->sc_cmap.cm_map[index + i][1], 531 &cm->green[i], 1); 532 if (error) 533 return error; 534 error = copyout(&sc->sc_cmap.cm_map[index + i][2], 535 &cm->blue[i], 1); 536 if (error) 537 return error; 538 } 539 540 return 0; 541 } 542 543 void 544 cgthree_init_screen(void *cookie, struct vcons_screen *scr, 545 int existing, long *defattr) 546 { 547 struct cgthree_softc *sc = cookie; 548 struct rasops_info *ri = &scr->scr_ri; 549 550 scr->scr_flags |= VCONS_DONT_READ; 551 552 ri->ri_depth = 8; 553 ri->ri_width = sc->sc_width; 554 ri->ri_height = sc->sc_height; 555 ri->ri_stride = sc->sc_stride; 556 ri->ri_flg = RI_CENTER; 557 558 ri->ri_bits = sc->sc_fb.fb_pixels; 559 560 rasops_init(ri, sc->sc_height/8, sc->sc_width/8); 561 ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_REVERSE; 562 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 563 sc->sc_width / ri->ri_font->fontwidth); 564 565 ri->ri_hw = scr; 566 } 567 568 #endif /* NWSDISPLAY > 0 */ 569