fb.c revision 1.5
1 /* $NetBSD: fb.c,v 1.5 2001/11/12 08:14:30 uwe 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. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * @(#)fb.c 8.1 (Berkeley) 6/11/93 45 */ 46 47 /* 48 * /dev/fb (indirect frame buffer driver). This is gross; we should 49 * just build cdevsw[] dynamically. 50 */ 51 52 #include <sys/param.h> 53 #include <sys/systm.h> 54 #include <sys/device.h> 55 #include <sys/proc.h> 56 #include <sys/conf.h> 57 58 #include <machine/autoconf.h> 59 #include <machine/kbd.h> 60 #include <machine/conf.h> 61 #include <machine/eeprom.h> 62 #include <sparc/dev/cons.h> 63 64 #include <dev/sun/fbio.h> 65 #include <dev/sun/fbvar.h> 66 67 #include "kbd.h" 68 #include "pfour.h" 69 70 static struct fbdevice *devfb; 71 72 void 73 fb_unblank() 74 { 75 76 if (devfb) 77 (*devfb->fb_driver->fbd_unblank)(devfb->fb_device); 78 } 79 80 /* 81 * Helper function for frame buffer devices. Decides whether 82 * the device can be the console output device according to 83 * PROM info. The result from this function may not be conclusive 84 * on machines with old PROMs; in that case, drivers should consult 85 * other sources of configuration information (e.g. EEPROM entries). 86 */ 87 #if defined(SUN4U) 88 /* Temporary special case for sun4u */ 89 int 90 fb_is_console(node) 91 int node; 92 { 93 extern int fbnode; 94 return (node == fbnode); 95 } 96 #else 97 int 98 fb_is_console(node) 99 int node; 100 { 101 int fbnode; 102 103 switch (prom_version()) { 104 case PROM_OLDMON: 105 /* `node' is not valid; just check for any fb device */ 106 return (prom_stdout() == PROMDEV_SCREEN); 107 108 case PROM_OBP_V0: 109 /* 110 * First, check if prom_stdout() represents a frame buffer, 111 * then match on the `fb' property on the root node, if any. 112 */ 113 if (prom_stdout() != PROMDEV_SCREEN) 114 return (0); 115 116 fbnode = PROM_getpropint(findroot(), "fb", 0); 117 return (fbnode == 0 || node == fbnode); 118 119 case PROM_OBP_V2: 120 case PROM_OBP_V3: 121 case PROM_OPENFIRM: 122 /* Just match the nodes */ 123 return (node == prom_stdout_node); 124 } 125 126 return (0); 127 } 128 #endif /* SUN4U */ 129 130 void 131 fb_attach(fb, isconsole) 132 struct fbdevice *fb; 133 int isconsole; 134 { 135 static int no_replace, seen_force; 136 137 /* 138 * We've already had a framebuffer forced into /dev/fb. Don't 139 * allow any more, even if this is the console. 140 */ 141 if (seen_force) { 142 if (devfb) { /* sanity */ 143 printf("%s: /dev/fb already full\n", 144 fb->fb_device->dv_xname); 145 return; 146 } else 147 seen_force = 0; 148 } 149 150 /* 151 * Check to see if we're being forced into /dev/fb. 152 */ 153 if (fb->fb_flags & FB_FORCE) { 154 if (devfb) 155 printf("%s: forcefully replacing %s\n", 156 fb->fb_device->dv_xname, 157 devfb->fb_device->dv_xname); 158 devfb = fb; 159 seen_force = no_replace = 1; 160 goto attached; 161 } 162 163 /* 164 * Check to see if we're the console. If we are, then replace 165 * any currently existing framebuffer. 166 */ 167 if (isconsole) { 168 if (devfb) 169 printf("%s: replacing %s\n", fb->fb_device->dv_xname, 170 devfb->fb_device->dv_xname); 171 devfb = fb; 172 no_replace = 1; 173 goto attached; 174 } 175 176 /* 177 * For the final case, we check to see if we can replace an 178 * existing framebuffer, if not, say so and return. 179 */ 180 if (no_replace) { 181 if (devfb) { /* sanity */ 182 printf("%s: /dev/fb already full\n", 183 fb->fb_device->dv_xname); 184 return; 185 } else 186 no_replace = 0; 187 } 188 189 if (devfb) 190 printf("%s: replacing %s\n", fb->fb_device->dv_xname, 191 devfb->fb_device->dv_xname); 192 devfb = fb; 193 194 attached: 195 printf("%s: attached to /dev/fb\n", devfb->fb_device->dv_xname); 196 } 197 198 int 199 fbopen(dev, flags, mode, p) 200 dev_t dev; 201 int flags, mode; 202 struct proc *p; 203 { 204 205 if (devfb == NULL) 206 return (ENXIO); 207 return (devfb->fb_driver->fbd_open)(dev, flags, mode, p); 208 } 209 210 int 211 fbclose(dev, flags, mode, p) 212 dev_t dev; 213 int flags, mode; 214 struct proc *p; 215 { 216 217 return (devfb->fb_driver->fbd_close)(dev, flags, mode, p); 218 } 219 220 int 221 fbioctl(dev, cmd, data, flags, p) 222 dev_t dev; 223 u_long cmd; 224 caddr_t data; 225 int flags; 226 struct proc *p; 227 { 228 229 return (devfb->fb_driver->fbd_ioctl)(dev, cmd, data, flags, p); 230 } 231 232 int 233 fbpoll(dev, events, p) 234 dev_t dev; 235 int events; 236 struct proc *p; 237 { 238 239 return (devfb->fb_driver->fbd_poll)(dev, events, p); 240 } 241 242 paddr_t 243 fbmmap(dev, off, prot) 244 dev_t dev; 245 off_t off; 246 int prot; 247 { 248 paddr_t (*map)__P((dev_t, off_t, int)) = devfb->fb_driver->fbd_mmap; 249 250 if (map == NULL) 251 return (-1); 252 return (map(dev, off, prot)); 253 } 254 255 void 256 fb_setsize_obp(fb, depth, def_width, def_height, node) 257 struct fbdevice *fb; 258 int depth, def_width, def_height, node; 259 { 260 fb->fb_type.fb_width = PROM_getpropint(node, "width", def_width); 261 fb->fb_type.fb_height = PROM_getpropint(node, "height", def_height); 262 fb->fb_linebytes = PROM_getpropint(node, "linebytes", 263 (fb->fb_type.fb_width * depth) / 8); 264 } 265 266 void 267 fb_setsize_eeprom(fb, depth, def_width, def_height) 268 struct fbdevice *fb; 269 int depth, def_width, def_height; 270 { 271 #if defined(SUN4) 272 struct eeprom *eep = (struct eeprom *)eeprom_va; 273 274 if (!CPU_ISSUN4) { 275 printf("fb_setsize_eeprom: not sun4\n"); 276 return; 277 } 278 279 /* Set up some defaults. */ 280 fb->fb_type.fb_width = def_width; 281 fb->fb_type.fb_height = def_height; 282 283 if (fb->fb_flags & FB_PFOUR) { 284 #if NPFOUR > 0 285 fb_setsize_pfour(fb); 286 #endif 287 } else if (eep != NULL) { 288 switch (eep->eeScreenSize) { 289 case EE_SCR_1152X900: 290 fb->fb_type.fb_width = 1152; 291 fb->fb_type.fb_height = 900; 292 break; 293 294 case EE_SCR_1024X1024: 295 fb->fb_type.fb_width = 1024; 296 fb->fb_type.fb_height = 1024; 297 break; 298 299 case EE_SCR_1600X1280: 300 fb->fb_type.fb_width = 1600; 301 fb->fb_type.fb_height = 1280; 302 break; 303 304 case EE_SCR_1440X1440: 305 fb->fb_type.fb_width = 1440; 306 fb->fb_type.fb_height = 1440; 307 break; 308 309 default: 310 /* 311 * XXX: Do nothing, I guess. 312 * Should we print a warning about 313 * an unknown value? --thorpej 314 */ 315 break; 316 } 317 } 318 319 fb->fb_linebytes = (fb->fb_type.fb_width * depth) / 8; 320 #endif /* SUN4 */ 321 } 322 323 324 325 #ifdef RASTERCONSOLE 326 #include <machine/kbd.h> 327 328 static void fb_bell __P((int)); 329 330 #if !defined(RASTERCONS_FULLSCREEN) 331 static int a2int __P((char *, int)); 332 333 static int 334 a2int(cp, deflt) 335 register char *cp; 336 register int deflt; 337 { 338 register int i = 0; 339 340 if (*cp == '\0') 341 return (deflt); 342 while (*cp != '\0') 343 i = i * 10 + *cp++ - '0'; 344 return (i); 345 } 346 #endif 347 348 static void 349 fb_bell(on) 350 int on; 351 { 352 #if NKBD > 0 353 (void)kbd_docmd(on?KBD_CMD_BELL:KBD_CMD_NOBELL, 0); 354 #endif 355 } 356 357 void 358 fbrcons_init(fb) 359 struct fbdevice *fb; 360 { 361 struct rconsole *rc = &fb->fb_rcons; 362 struct rasops_info *ri = &fb->fb_rinfo; 363 int maxrow, maxcol; 364 #if !defined(RASTERCONS_FULLSCREEN) 365 int *row, *col; 366 #endif 367 368 /* Set up what rasops needs to know about */ 369 bzero(ri, sizeof *ri); 370 ri->ri_stride = fb->fb_linebytes; 371 ri->ri_bits = (caddr_t)fb->fb_pixels; 372 ri->ri_depth = fb->fb_type.fb_depth; 373 ri->ri_width = fb->fb_type.fb_width; 374 ri->ri_height = fb->fb_type.fb_height; 375 maxrow = 5000; 376 maxcol = 5000; 377 378 #if !defined(RASTERCONS_FULLSCREEN) 379 #if defined(SUN4) 380 if (CPU_ISSUN4) { 381 struct eeprom *eep = (struct eeprom *)eeprom_va; 382 383 if (eep == NULL) { 384 maxcol = 80; 385 maxrow = 34; 386 } else { 387 maxcol = eep->eeTtyCols; 388 maxrow = eep->eeTtyRows; 389 } 390 } 391 #endif /* SUN4 */ 392 if (!CPU_ISSUN4) { 393 maxcol = 394 a2int(PROM_getpropstring(optionsnode, "screen-#columns"), 80); 395 maxrow = 396 a2int(PROM_getpropstring(optionsnode, "screen-#rows"), 34); 397 } 398 #endif /* !RASTERCONS_FULLSCREEN */ 399 /* 400 * - force monochrome output 401 * - eraserows() hack to clear the *entire* display 402 * - cursor is currently enabled 403 * - center output 404 */ 405 ri->ri_flg = RI_FULLCLEAR | RI_CURSOR | RI_CENTER; 406 407 /* Get operations set and connect to rcons */ 408 if (rasops_init(ri, maxrow, maxcol)) 409 panic("fbrcons_init: rasops_init failed!"); 410 411 if (ri->ri_depth == 8) { 412 int i; 413 for (i = 0; i < 16; i++) { 414 415 /* 416 * Cmap entries are repeated four times in the 417 * 32 bit wide `devcmap' entries for optimization 418 * purposes; see rasops(9) 419 */ 420 #define I_TO_DEVCMAP(i) ((i) | ((i)<<8) | ((i)<<16) | ((i)<<24)) 421 422 /* 423 * Use existing colormap entries for black and white 424 */ 425 if ((i & 7) == WSCOL_BLACK) { 426 ri->ri_devcmap[i] = I_TO_DEVCMAP(255); 427 continue; 428 } 429 430 if ((i & 7) == WSCOL_WHITE) { 431 ri->ri_devcmap[i] = I_TO_DEVCMAP(0); 432 continue; 433 } 434 /* 435 * Other entries refer to ANSI map, which for now 436 * is setup in bt_subr.c 437 */ 438 ri->ri_devcmap[i] = I_TO_DEVCMAP(i + 1); 439 #undef I_TO_DEVCMAP 440 } 441 } 442 443 rc->rc_row = rc->rc_col = 0; 444 #if !defined(RASTERCONS_FULLSCREEN) 445 /* Determine addresses of prom emulator row and column */ 446 if (!CPU_ISSUN4 && !romgetcursoraddr(&row, &col)) { 447 rc->rc_row = *row; 448 rc->rc_col = *col; 449 } 450 #endif 451 ri->ri_crow = rc->rc_row; 452 ri->ri_ccol = rc->rc_col; 453 454 rc->rc_ops = &ri->ri_ops; 455 rc->rc_cookie = ri; 456 rc->rc_bell = fb_bell; 457 rc->rc_maxcol = ri->ri_cols; 458 rc->rc_maxrow = ri->ri_rows; 459 rc->rc_width = ri->ri_emuwidth; 460 rc->rc_height = ri->ri_emuheight; 461 rc->rc_deffgcolor = WSCOL_BLACK; 462 rc->rc_defbgcolor = WSCOL_WHITE; 463 rcons_init(rc, 0); 464 465 /* Hook up virtual console */ 466 v_putc = rcons_cnputc; 467 } 468 469 int 470 fbrcons_rows() 471 { 472 return (devfb ? devfb->fb_rcons.rc_maxrow : 0); 473 } 474 475 int 476 fbrcons_cols() 477 { 478 return (devfb ? devfb->fb_rcons.rc_maxcol : 0); 479 } 480 #endif /* RASTERCONSOLE */ 481
Indexes created Tue Sep 23 07:09:52 GMT 2025