fb.c revision 1.29
1 /* $NetBSD: fb.c,v 1.29 2009/03/14 15:36:21 dsl Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)fb.c 8.1 (Berkeley) 6/11/93 41 */ 42 43 /* 44 * /dev/fb (indirect frame buffer driver). This is gross; we should 45 * just build cdevsw[] dynamically. 46 */ 47 48 #include <sys/cdefs.h> 49 __KERNEL_RCSID(0, "$NetBSD: fb.c,v 1.29 2009/03/14 15:36:21 dsl Exp $"); 50 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/device.h> 54 #include <sys/proc.h> 55 #include <sys/conf.h> 56 #include <sys/malloc.h> 57 #include <sys/types.h> 58 59 #include <machine/promlib.h> 60 #include <machine/autoconf.h> 61 #include <machine/kbd.h> 62 #include <machine/eeprom.h> 63 #include <sparc/dev/cons.h> 64 65 #include <dev/sun/fbio.h> 66 #include <dev/sun/fbvar.h> 67 68 #include "kbd.h" 69 #include "pfour.h" 70 71 72 struct fbdevlist { 73 struct fbdevice *fb_dev; 74 struct fbdevlist *fb_next; 75 }; 76 77 static struct fbdevlist fblist = { 78 NULL, 79 NULL, 80 }; 81 82 dev_type_open(fbopen); 83 dev_type_close(fbclose); 84 dev_type_ioctl(fbioctl); 85 dev_type_poll(fbpoll); 86 dev_type_mmap(fbmmap); 87 dev_type_kqfilter(fbkqfilter); 88 89 const struct cdevsw fb_cdevsw = { 90 fbopen, fbclose, noread, nowrite, fbioctl, 91 nostop, notty, fbpoll, fbmmap, fbkqfilter, D_OTHER 92 }; 93 94 void 95 fb_unblank() 96 { 97 98 struct fbdevlist *fbl = &fblist; 99 100 while (fbl != NULL && fbl->fb_dev != NULL) { 101 (*fbl->fb_dev->fb_driver->fbd_unblank)(fbl->fb_dev->fb_device); 102 fbl = fbl->fb_next; 103 } 104 } 105 106 /* 107 * Helper function for frame buffer devices. Decides whether 108 * the device can be the console output device according to 109 * PROM info. The result from this function may not be conclusive 110 * on machines with old PROMs; in that case, drivers should consult 111 * other sources of configuration information (e.g. EEPROM entries). 112 */ 113 int 114 fb_is_console(int node) 115 { 116 #if !defined(SUN4U) 117 int fbnode; 118 119 switch (prom_version()) { 120 case PROM_OLDMON: 121 /* `node' is not valid; just check for any fb device */ 122 return (prom_stdout() == PROMDEV_SCREEN); 123 124 case PROM_OBP_V0: 125 /* 126 * First, check if prom_stdout() represents a frame buffer, 127 * then match on the `fb' property on the root node, if any. 128 */ 129 if (prom_stdout() != PROMDEV_SCREEN) 130 return (0); 131 132 fbnode = prom_getpropint(findroot(), "fb", 0); 133 return (fbnode == 0 || node == fbnode); 134 135 case PROM_OBP_V2: 136 case PROM_OBP_V3: 137 case PROM_OPENFIRM: 138 /* Just match the nodes */ 139 return (node == prom_stdout_node); 140 } 141 142 return (0); 143 #else 144 return (node == prom_stdout_node); 145 #endif 146 } 147 148 void 149 fb_attach(struct fbdevice *fb, int isconsole) 150 { 151 static int seen_force = 0; 152 int nfb = 0; 153 struct fbdevlist *fbl = &fblist; 154 155 /* 156 * Check to see if we're being forced into /dev/fb0, or if we're 157 * the console. If we are, then move/replace the current fb0. 158 */ 159 if ((fb->fb_flags & FB_FORCE || (isconsole && !seen_force)) && 160 fblist.fb_dev != NULL) { 161 while (fbl->fb_next != NULL) { 162 fbl = fbl->fb_next; 163 nfb++; 164 } 165 if ((fbl->fb_next = malloc(sizeof (struct fbdevlist), 166 M_DEVBUF, M_NOWAIT)) == NULL) 167 printf("%s: replacing %s at /dev/fb0\n", 168 device_xname(fb->fb_device), 169 device_xname(fblist.fb_dev->fb_device)); 170 else { 171 fbl = fbl->fb_next; 172 nfb++; 173 fbl->fb_dev = fblist.fb_dev; 174 fbl->fb_next = NULL; 175 printf("%s: moved to /dev/fb%d\n", 176 device_xname(fbl->fb_dev->fb_device), nfb); 177 printf("%s: attached to /dev/fb0\n", 178 device_xname(fb->fb_device)); 179 } 180 fblist.fb_dev = fb; 181 if (fb->fb_flags & FB_FORCE) 182 seen_force = 1; 183 /* Add to end of fb list. */ 184 } else { 185 if (fblist.fb_dev != NULL) { 186 while (fbl->fb_next != NULL) { 187 fbl = fbl->fb_next; 188 nfb++; 189 } 190 if ((fbl->fb_next = malloc(sizeof (struct fbdevlist), 191 M_DEVBUF, M_NOWAIT)) == NULL) { 192 aprint_error_dev(fb->fb_device, "no space to attach after /dev/fb%d\n", 193 nfb); 194 return; 195 } 196 fbl = fbl->fb_next; 197 nfb++; 198 } 199 fbl->fb_dev = fb; 200 fbl->fb_next = NULL; 201 printf("%s: attached to /dev/fb%d\n", 202 device_xname(fbl->fb_dev->fb_device), nfb); 203 } 204 } 205 206 int 207 fbopen(dev, flags, mode, l) 208 dev_t dev; 209 int flags, mode; 210 struct lwp *l; 211 { 212 int unit, nunit; 213 struct fbdevlist *fbl = &fblist; 214 215 unit = minor(dev); 216 while (unit-- && fbl != NULL) 217 fbl = fbl->fb_next; 218 if (fbl == NULL || fbl->fb_dev == NULL) 219 return (ENXIO); 220 221 nunit = device_unit(fbl->fb_dev->fb_device); 222 return (fbl->fb_dev->fb_driver->fbd_open)(makedev(0, nunit), flags, 223 mode, l); 224 } 225 226 int 227 fbclose(dev, flags, mode, l) 228 dev_t dev; 229 int flags, mode; 230 struct lwp *l; 231 { 232 int unit, nunit; 233 struct fbdevlist *fbl = &fblist; 234 235 unit = minor(dev); 236 while (unit-- && fbl != NULL) 237 fbl = fbl->fb_next; 238 if (fbl == NULL || fbl->fb_dev == NULL) 239 return (ENXIO); 240 241 nunit = device_unit(fbl->fb_dev->fb_device); 242 return (fbl->fb_dev->fb_driver->fbd_close)(makedev(0, nunit), flags, 243 mode, l); 244 } 245 246 int 247 fbioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 248 { 249 int unit, nunit; 250 struct fbdevlist *fbl = &fblist; 251 252 unit = minor(dev); 253 while (unit-- && fbl != NULL) 254 fbl = fbl->fb_next; 255 if (fbl == NULL || fbl->fb_dev == NULL) 256 return (ENXIO); 257 258 nunit = device_unit(fbl->fb_dev->fb_device); 259 return (fbl->fb_dev->fb_driver->fbd_ioctl)(makedev(0, nunit), cmd, 260 data, flags, l); 261 } 262 263 int 264 fbpoll(dev_t dev, int events, struct lwp *l) 265 { 266 int unit, nunit; 267 struct fbdevlist *fbl = &fblist; 268 269 unit = minor(dev); 270 while (unit-- && fbl != NULL) 271 fbl = fbl->fb_next; 272 if (fbl == NULL || fbl->fb_dev == NULL) 273 return (ENXIO); 274 275 nunit = device_unit(fbl->fb_dev->fb_device); 276 return (fbl->fb_dev->fb_driver->fbd_poll)(makedev(0, nunit), events, 277 l); 278 } 279 280 int 281 fbkqfilter(dev_t dev, struct knote *kn) 282 { 283 int unit, nunit; 284 struct fbdevlist *fbl = &fblist; 285 286 unit = minor(dev); 287 while (unit-- && fbl != NULL) 288 fbl = fbl->fb_next; 289 if (fbl == NULL || fbl->fb_dev == NULL) 290 return (ENXIO); 291 292 nunit = device_unit(fbl->fb_dev->fb_device); 293 return (fbl->fb_dev->fb_driver->fbd_kqfilter)(makedev(0, nunit), kn); 294 } 295 296 paddr_t 297 fbmmap(dev_t dev, off_t off, int prot) 298 { 299 int unit, nunit; 300 struct fbdevlist *fbl = &fblist; 301 302 unit = minor(dev); 303 while (unit-- && fbl != NULL) 304 fbl = fbl->fb_next; 305 if (fbl == NULL || fbl->fb_dev == NULL) 306 return (ENXIO); 307 308 nunit = device_unit(fbl->fb_dev->fb_device); 309 paddr_t (*map)(dev_t, off_t, int) = fbl->fb_dev->fb_driver->fbd_mmap; 310 311 if (map == NULL) 312 return (-1); 313 return (map(makedev(0, nunit), off, prot)); 314 } 315 316 void 317 fb_setsize_obp(fb, depth, def_width, def_height, node) 318 struct fbdevice *fb; 319 int depth, def_width, def_height, node; 320 { 321 fb->fb_type.fb_width = prom_getpropint(node, "width", def_width); 322 fb->fb_type.fb_height = prom_getpropint(node, "height", def_height); 323 fb->fb_linebytes = prom_getpropint(node, "linebytes", 324 (fb->fb_type.fb_width * depth) / 8); 325 } 326 327 void 328 fb_setsize_eeprom(fb, depth, def_width, def_height) 329 struct fbdevice *fb; 330 int depth, def_width, def_height; 331 { 332 #if !defined(SUN4U) 333 struct eeprom *eep = (struct eeprom *)eeprom_va; 334 335 if (!CPU_ISSUN4) { 336 printf("fb_setsize_eeprom: not sun4\n"); 337 return; 338 } 339 340 /* Set up some defaults. */ 341 fb->fb_type.fb_width = def_width; 342 fb->fb_type.fb_height = def_height; 343 344 if (fb->fb_flags & FB_PFOUR) { 345 #if NPFOUR > 0 346 fb_setsize_pfour(fb); 347 #endif 348 } else if (eep != NULL) { 349 switch (eep->eeScreenSize) { 350 case EE_SCR_1152X900: 351 fb->fb_type.fb_width = 1152; 352 fb->fb_type.fb_height = 900; 353 break; 354 355 case EE_SCR_1024X1024: 356 fb->fb_type.fb_width = 1024; 357 fb->fb_type.fb_height = 1024; 358 break; 359 360 case EE_SCR_1600X1280: 361 fb->fb_type.fb_width = 1600; 362 fb->fb_type.fb_height = 1280; 363 break; 364 365 case EE_SCR_1440X1440: 366 fb->fb_type.fb_width = 1440; 367 fb->fb_type.fb_height = 1440; 368 break; 369 370 default: 371 /* 372 * XXX: Do nothing, I guess. 373 * Should we print a warning about 374 * an unknown value? --thorpej 375 */ 376 break; 377 } 378 } 379 380 fb->fb_linebytes = (fb->fb_type.fb_width * depth) / 8; 381 #endif /* !SUN4U */ 382 } 383 384 385 386 #ifdef RASTERCONSOLE 387 static void fb_bell(int); 388 389 static void 390 fb_bell(int on) 391 { 392 #if NKBD > 0 393 kbd_bell(on); 394 #endif 395 } 396 397 void 398 fbrcons_init(struct fbdevice *fb) 399 { 400 struct rconsole *rc = &fb->fb_rcons; 401 struct rasops_info *ri = &fb->fb_rinfo; 402 int maxrow, maxcol; 403 #if !defined(RASTERCONS_FULLSCREEN) 404 int *row, *col; 405 #endif 406 407 /* Set up what rasops needs to know about */ 408 bzero(ri, sizeof *ri); 409 ri->ri_stride = fb->fb_linebytes; 410 ri->ri_bits = (void *)fb->fb_pixels; 411 ri->ri_depth = fb->fb_type.fb_depth; 412 ri->ri_width = fb->fb_type.fb_width; 413 ri->ri_height = fb->fb_type.fb_height; 414 maxrow = 5000; 415 maxcol = 5000; 416 417 #if !defined(RASTERCONS_FULLSCREEN) 418 #if !defined(SUN4U) 419 if (CPU_ISSUN4) { 420 struct eeprom *eep = (struct eeprom *)eeprom_va; 421 422 if (eep == NULL) { 423 maxcol = 80; 424 maxrow = 34; 425 } else { 426 maxcol = eep->eeTtyCols; 427 maxrow = eep->eeTtyRows; 428 } 429 } 430 #endif /* !SUN4U */ 431 if (!CPU_ISSUN4) { 432 char buf[6+1]; /* Enough for six digits */ 433 maxcol = (prom_getoption("screen-#columns", buf, sizeof buf) == 0) 434 ? strtoul(buf, NULL, 10) 435 : 80; 436 437 maxrow = (prom_getoption("screen-#rows", buf, sizeof buf) != 0) 438 ? strtoul(buf, NULL, 10) 439 : 34; 440 441 } 442 #endif /* !RASTERCONS_FULLSCREEN */ 443 /* 444 * - force monochrome output 445 * - eraserows() hack to clear the *entire* display 446 * - cursor is currently enabled 447 * - center output 448 */ 449 ri->ri_flg = RI_FULLCLEAR | RI_CURSOR | RI_CENTER; 450 451 /* Get operations set and connect to rcons */ 452 if (rasops_init(ri, maxrow, maxcol)) 453 panic("fbrcons_init: rasops_init failed!"); 454 455 if (ri->ri_depth == 8) { 456 int i; 457 for (i = 0; i < 16; i++) { 458 459 /* 460 * Cmap entries are repeated four times in the 461 * 32 bit wide `devcmap' entries for optimization 462 * purposes; see rasops(9) 463 */ 464 #define I_TO_DEVCMAP(i) ((i) | ((i)<<8) | ((i)<<16) | ((i)<<24)) 465 466 /* 467 * Use existing colormap entries for black and white 468 */ 469 if ((i & 7) == WSCOL_BLACK) { 470 ri->ri_devcmap[i] = I_TO_DEVCMAP(255); 471 continue; 472 } 473 474 if ((i & 7) == WSCOL_WHITE) { 475 ri->ri_devcmap[i] = I_TO_DEVCMAP(0); 476 continue; 477 } 478 /* 479 * Other entries refer to ANSI map, which for now 480 * is setup in bt_subr.c 481 */ 482 ri->ri_devcmap[i] = I_TO_DEVCMAP(i + 1); 483 #undef I_TO_DEVCMAP 484 } 485 } 486 487 rc->rc_row = rc->rc_col = 0; 488 #if !defined(RASTERCONS_FULLSCREEN) 489 /* Determine addresses of prom emulator row and column */ 490 if (!CPU_ISSUN4 && !romgetcursoraddr(&row, &col)) { 491 rc->rc_row = *row; 492 rc->rc_col = *col; 493 } 494 #endif 495 ri->ri_crow = rc->rc_row; 496 ri->ri_ccol = rc->rc_col; 497 498 rc->rc_ops = &ri->ri_ops; 499 rc->rc_cookie = ri; 500 rc->rc_bell = fb_bell; 501 rc->rc_maxcol = ri->ri_cols; 502 rc->rc_maxrow = ri->ri_rows; 503 rc->rc_width = ri->ri_emuwidth; 504 rc->rc_height = ri->ri_emuheight; 505 rc->rc_deffgcolor = WSCOL_BLACK; 506 rc->rc_defbgcolor = WSCOL_WHITE; 507 rcons_init(rc, 0); 508 509 /* Hook up virtual console */ 510 v_putc = rcons_cnputc; 511 } 512 513 int 514 fbrcons_rows() 515 { 516 return ((fblist.fb_dev != NULL) ? 517 fblist.fb_dev->fb_rcons.rc_maxrow : 0); 518 } 519 520 int 521 fbrcons_cols() 522 { 523 return ((fblist.fb_dev != NULL) ? 524 fblist.fb_dev->fb_rcons.rc_maxcol : 0); 525 } 526 #endif /* RASTERCONSOLE */ 527
Indexes created Wed Sep 24 05:09:52 GMT 2025