fb.c revision 1.33.10.1
1 /* $NetBSD: fb.c,v 1.33.10.1 2014/05/22 11:40:36 yamt 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 1.33.10.1 2014/05/22 11:40:36 yamt 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 .d_open = fbopen, 91 .d_close = fbclose, 92 .d_read = noread, 93 .d_write = nowrite, 94 .d_ioctl = fbioctl, 95 .d_stop = nostop, 96 .d_tty = notty, 97 .d_poll = fbpoll, 98 .d_mmap = fbmmap, 99 .d_kqfilter = fbkqfilter, 100 .d_flag = D_OTHER 101 }; 102 103 void 104 fb_unblank(void) 105 { 106 107 struct fbdevlist *fbl = &fblist; 108 109 while (fbl != NULL && fbl->fb_dev != NULL) { 110 (*fbl->fb_dev->fb_driver->fbd_unblank)(fbl->fb_dev->fb_device); 111 fbl = fbl->fb_next; 112 } 113 } 114 115 /* 116 * Helper function for frame buffer devices. Decides whether 117 * the device can be the console output device according to 118 * PROM info. The result from this function may not be conclusive 119 * on machines with old PROMs; in that case, drivers should consult 120 * other sources of configuration information (e.g. EEPROM entries). 121 */ 122 int 123 fb_is_console(int node) 124 { 125 #if !defined(SUN4U) 126 int fbnode; 127 128 switch (prom_version()) { 129 case PROM_OLDMON: 130 /* `node' is not valid; just check for any fb device */ 131 return (prom_stdout() == PROMDEV_SCREEN); 132 133 case PROM_OBP_V0: 134 /* 135 * First, check if prom_stdout() represents a frame buffer, 136 * then match on the `fb' property on the root node, if any. 137 */ 138 if (prom_stdout() != PROMDEV_SCREEN) 139 return (0); 140 141 fbnode = prom_getpropint(findroot(), "fb", 0); 142 return (fbnode == 0 || node == fbnode); 143 144 case PROM_OBP_V2: 145 case PROM_OBP_V3: 146 case PROM_OPENFIRM: 147 /* Just match the nodes */ 148 return (node == prom_stdout_node); 149 } 150 151 return (0); 152 #else 153 return (node == prom_stdout_node); 154 #endif 155 } 156 157 void 158 fb_attach(struct fbdevice *fb, int isconsole) 159 { 160 static int seen_force = 0; 161 int nfb = 0; 162 struct fbdevlist *fbl = &fblist; 163 164 /* 165 * Check to see if we're being forced into /dev/fb0, or if we're 166 * the console. If we are, then move/replace the current fb0. 167 */ 168 if ((fb->fb_flags & FB_FORCE || (isconsole && !seen_force)) && 169 fblist.fb_dev != NULL) { 170 while (fbl->fb_next != NULL) { 171 fbl = fbl->fb_next; 172 nfb++; 173 } 174 if ((fbl->fb_next = malloc(sizeof (struct fbdevlist), 175 M_DEVBUF, M_NOWAIT)) == NULL) 176 printf("%s: replacing %s at /dev/fb0\n", 177 device_xname(fb->fb_device), 178 device_xname(fblist.fb_dev->fb_device)); 179 else { 180 fbl = fbl->fb_next; 181 nfb++; 182 fbl->fb_dev = fblist.fb_dev; 183 fbl->fb_next = NULL; 184 aprint_normal_dev(fbl->fb_dev->fb_device, 185 "moved to /dev/fb%d\n", nfb); 186 aprint_normal_dev(fbl->fb_dev->fb_device, 187 "attached to /dev/fb0\n"); 188 } 189 fblist.fb_dev = fb; 190 if (fb->fb_flags & FB_FORCE) 191 seen_force = 1; 192 /* Add to end of fb list. */ 193 } else { 194 if (fblist.fb_dev != NULL) { 195 while (fbl->fb_next != NULL) { 196 fbl = fbl->fb_next; 197 nfb++; 198 } 199 if ((fbl->fb_next = malloc(sizeof (struct fbdevlist), 200 M_DEVBUF, M_NOWAIT)) == NULL) { 201 aprint_error_dev(fb->fb_device, 202 "no space to attach after /dev/fb%d\n", 203 nfb); 204 return; 205 } 206 fbl = fbl->fb_next; 207 nfb++; 208 } 209 fbl->fb_dev = fb; 210 fbl->fb_next = NULL; 211 aprint_normal_dev(fbl->fb_dev->fb_device, 212 "attached to /dev/fb%d\n", nfb); 213 } 214 } 215 216 int 217 fbopen(dev_t dev, int flags, int mode, struct lwp *l) 218 { 219 int unit, nunit; 220 struct fbdevlist *fbl = &fblist; 221 222 unit = minor(dev); 223 while (unit-- && fbl != NULL) 224 fbl = fbl->fb_next; 225 if (fbl == NULL || fbl->fb_dev == NULL) 226 return (ENXIO); 227 228 nunit = device_unit(fbl->fb_dev->fb_device); 229 return (fbl->fb_dev->fb_driver->fbd_open)(makedev(0, nunit), flags, 230 mode, l); 231 } 232 233 int 234 fbclose(dev_t dev, int flags, int mode, struct lwp *l) 235 { 236 int unit, nunit; 237 struct fbdevlist *fbl = &fblist; 238 239 unit = minor(dev); 240 while (unit-- && fbl != NULL) 241 fbl = fbl->fb_next; 242 if (fbl == NULL || fbl->fb_dev == NULL) 243 return (ENXIO); 244 245 nunit = device_unit(fbl->fb_dev->fb_device); 246 return (fbl->fb_dev->fb_driver->fbd_close)(makedev(0, nunit), flags, 247 mode, l); 248 } 249 250 int 251 fbioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 252 { 253 int unit, nunit; 254 struct fbdevlist *fbl = &fblist; 255 256 unit = minor(dev); 257 while (unit-- && fbl != NULL) 258 fbl = fbl->fb_next; 259 if (fbl == NULL || fbl->fb_dev == NULL) 260 return (ENXIO); 261 262 nunit = device_unit(fbl->fb_dev->fb_device); 263 return (fbl->fb_dev->fb_driver->fbd_ioctl)(makedev(0, nunit), cmd, 264 data, flags, l); 265 } 266 267 int 268 fbpoll(dev_t dev, int events, struct lwp *l) 269 { 270 int unit, nunit; 271 struct fbdevlist *fbl = &fblist; 272 273 unit = minor(dev); 274 while (unit-- && fbl != NULL) 275 fbl = fbl->fb_next; 276 if (fbl == NULL || fbl->fb_dev == NULL) 277 return (ENXIO); 278 279 nunit = device_unit(fbl->fb_dev->fb_device); 280 return (fbl->fb_dev->fb_driver->fbd_poll)(makedev(0, nunit), events, 281 l); 282 } 283 284 int 285 fbkqfilter(dev_t dev, struct knote *kn) 286 { 287 int unit, nunit; 288 struct fbdevlist *fbl = &fblist; 289 290 unit = minor(dev); 291 while (unit-- && fbl != NULL) 292 fbl = fbl->fb_next; 293 if (fbl == NULL || fbl->fb_dev == NULL) 294 return (ENXIO); 295 296 nunit = device_unit(fbl->fb_dev->fb_device); 297 return (fbl->fb_dev->fb_driver->fbd_kqfilter)(makedev(0, nunit), kn); 298 } 299 300 paddr_t 301 fbmmap(dev_t dev, off_t off, int prot) 302 { 303 int unit, nunit; 304 struct fbdevlist *fbl = &fblist; 305 306 unit = minor(dev); 307 while (unit-- && fbl != NULL) 308 fbl = fbl->fb_next; 309 if (fbl == NULL || fbl->fb_dev == NULL) 310 return (ENXIO); 311 312 nunit = device_unit(fbl->fb_dev->fb_device); 313 paddr_t (*map)(dev_t, off_t, int) = fbl->fb_dev->fb_driver->fbd_mmap; 314 315 if (map == NULL) 316 return (-1); 317 return (map(makedev(0, nunit), off, prot)); 318 } 319 320 void 321 fb_setsize_obp(struct fbdevice *fb, int depth, int def_width, int def_height, int node) 322 { 323 fb->fb_type.fb_width = prom_getpropint(node, "width", def_width); 324 fb->fb_type.fb_height = prom_getpropint(node, "height", def_height); 325 fb->fb_linebytes = prom_getpropint(node, "linebytes", 326 (fb->fb_type.fb_width * depth) / 8); 327 } 328 329 void 330 fb_setsize_eeprom(struct fbdevice *fb, int depth, int def_width, int 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 memset(ri, 0, 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(void) 515 { 516 return ((fblist.fb_dev != NULL) ? 517 fblist.fb_dev->fb_rcons.rc_maxrow : 0); 518 } 519 520 int 521 fbrcons_cols(void) 522 { 523 return ((fblist.fb_dev != NULL) ? 524 fblist.fb_dev->fb_rcons.rc_maxcol : 0); 525 } 526 #endif /* RASTERCONSOLE */ 527
Indexes created Wed Oct 15 16:09:53 GMT 2025