fb.c revision 1.33.20.1
1 /* $NetBSD: fb.c,v 1.33.20.1 2014/08/20 00:03:50 tls 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 1.33.20.1 2014/08/20 00:03:50 tls 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_discard = nodiscard, 101 .d_flag = D_OTHER 102 }; 103 104 void 105 fb_unblank(void) 106 { 107 108 struct fbdevlist *fbl = &fblist; 109 110 while (fbl != NULL && fbl->fb_dev != NULL) { 111 (*fbl->fb_dev->fb_driver->fbd_unblank)(fbl->fb_dev->fb_device); 112 fbl = fbl->fb_next; 113 } 114 } 115 116 /* 117 * Helper function for frame buffer devices. Decides whether 118 * the device can be the console output device according to 119 * PROM info. The result from this function may not be conclusive 120 * on machines with old PROMs; in that case, drivers should consult 121 * other sources of configuration information (e.g. EEPROM entries). 122 */ 123 int 124 fb_is_console(int node) 125 { 126 #if !defined(SUN4U) 127 int fbnode; 128 129 switch (prom_version()) { 130 case PROM_OLDMON: 131 /* `node' is not valid; just check for any fb device */ 132 return (prom_stdout() == PROMDEV_SCREEN); 133 134 case PROM_OBP_V0: 135 /* 136 * First, check if prom_stdout() represents a frame buffer, 137 * then match on the `fb' property on the root node, if any. 138 */ 139 if (prom_stdout() != PROMDEV_SCREEN) 140 return (0); 141 142 fbnode = prom_getpropint(findroot(), "fb", 0); 143 return (fbnode == 0 || node == fbnode); 144 145 case PROM_OBP_V2: 146 case PROM_OBP_V3: 147 case PROM_OPENFIRM: 148 /* Just match the nodes */ 149 return (node == prom_stdout_node); 150 } 151 152 return (0); 153 #else 154 return (node == prom_stdout_node); 155 #endif 156 } 157 158 void 159 fb_attach(struct fbdevice *fb, int isconsole) 160 { 161 static int seen_force = 0; 162 int nfb = 0; 163 struct fbdevlist *fbl = &fblist; 164 165 /* 166 * Check to see if we're being forced into /dev/fb0, or if we're 167 * the console. If we are, then move/replace the current fb0. 168 */ 169 if ((fb->fb_flags & FB_FORCE || (isconsole && !seen_force)) && 170 fblist.fb_dev != NULL) { 171 while (fbl->fb_next != NULL) { 172 fbl = fbl->fb_next; 173 nfb++; 174 } 175 if ((fbl->fb_next = malloc(sizeof (struct fbdevlist), 176 M_DEVBUF, M_NOWAIT)) == NULL) 177 printf("%s: replacing %s at /dev/fb0\n", 178 device_xname(fb->fb_device), 179 device_xname(fblist.fb_dev->fb_device)); 180 else { 181 fbl = fbl->fb_next; 182 nfb++; 183 fbl->fb_dev = fblist.fb_dev; 184 fbl->fb_next = NULL; 185 aprint_normal_dev(fbl->fb_dev->fb_device, 186 "moved to /dev/fb%d\n", nfb); 187 aprint_normal_dev(fbl->fb_dev->fb_device, 188 "attached to /dev/fb0\n"); 189 } 190 fblist.fb_dev = fb; 191 if (fb->fb_flags & FB_FORCE) 192 seen_force = 1; 193 /* Add to end of fb list. */ 194 } else { 195 if (fblist.fb_dev != NULL) { 196 while (fbl->fb_next != NULL) { 197 fbl = fbl->fb_next; 198 nfb++; 199 } 200 if ((fbl->fb_next = malloc(sizeof (struct fbdevlist), 201 M_DEVBUF, M_NOWAIT)) == NULL) { 202 aprint_error_dev(fb->fb_device, 203 "no space to attach after /dev/fb%d\n", 204 nfb); 205 return; 206 } 207 fbl = fbl->fb_next; 208 nfb++; 209 } 210 fbl->fb_dev = fb; 211 fbl->fb_next = NULL; 212 aprint_normal_dev(fbl->fb_dev->fb_device, 213 "attached to /dev/fb%d\n", nfb); 214 } 215 } 216 217 int 218 fbopen(dev_t dev, int flags, int mode, struct lwp *l) 219 { 220 int unit, nunit; 221 struct fbdevlist *fbl = &fblist; 222 223 unit = minor(dev); 224 while (unit-- && fbl != NULL) 225 fbl = fbl->fb_next; 226 if (fbl == NULL || fbl->fb_dev == NULL) 227 return (ENXIO); 228 229 nunit = device_unit(fbl->fb_dev->fb_device); 230 return (fbl->fb_dev->fb_driver->fbd_open)(makedev(0, nunit), flags, 231 mode, l); 232 } 233 234 int 235 fbclose(dev_t dev, int flags, int mode, struct lwp *l) 236 { 237 int unit, nunit; 238 struct fbdevlist *fbl = &fblist; 239 240 unit = minor(dev); 241 while (unit-- && fbl != NULL) 242 fbl = fbl->fb_next; 243 if (fbl == NULL || fbl->fb_dev == NULL) 244 return (ENXIO); 245 246 nunit = device_unit(fbl->fb_dev->fb_device); 247 return (fbl->fb_dev->fb_driver->fbd_close)(makedev(0, nunit), flags, 248 mode, l); 249 } 250 251 int 252 fbioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 253 { 254 int unit, nunit; 255 struct fbdevlist *fbl = &fblist; 256 257 unit = minor(dev); 258 while (unit-- && fbl != NULL) 259 fbl = fbl->fb_next; 260 if (fbl == NULL || fbl->fb_dev == NULL) 261 return (ENXIO); 262 263 nunit = device_unit(fbl->fb_dev->fb_device); 264 return (fbl->fb_dev->fb_driver->fbd_ioctl)(makedev(0, nunit), cmd, 265 data, flags, l); 266 } 267 268 int 269 fbpoll(dev_t dev, int events, struct lwp *l) 270 { 271 int unit, nunit; 272 struct fbdevlist *fbl = &fblist; 273 274 unit = minor(dev); 275 while (unit-- && fbl != NULL) 276 fbl = fbl->fb_next; 277 if (fbl == NULL || fbl->fb_dev == NULL) 278 return (ENXIO); 279 280 nunit = device_unit(fbl->fb_dev->fb_device); 281 return (fbl->fb_dev->fb_driver->fbd_poll)(makedev(0, nunit), events, 282 l); 283 } 284 285 int 286 fbkqfilter(dev_t dev, struct knote *kn) 287 { 288 int unit, nunit; 289 struct fbdevlist *fbl = &fblist; 290 291 unit = minor(dev); 292 while (unit-- && fbl != NULL) 293 fbl = fbl->fb_next; 294 if (fbl == NULL || fbl->fb_dev == NULL) 295 return (ENXIO); 296 297 nunit = device_unit(fbl->fb_dev->fb_device); 298 return (fbl->fb_dev->fb_driver->fbd_kqfilter)(makedev(0, nunit), kn); 299 } 300 301 paddr_t 302 fbmmap(dev_t dev, off_t off, int prot) 303 { 304 int unit, nunit; 305 struct fbdevlist *fbl = &fblist; 306 307 unit = minor(dev); 308 while (unit-- && fbl != NULL) 309 fbl = fbl->fb_next; 310 if (fbl == NULL || fbl->fb_dev == NULL) 311 return (ENXIO); 312 313 nunit = device_unit(fbl->fb_dev->fb_device); 314 paddr_t (*map)(dev_t, off_t, int) = fbl->fb_dev->fb_driver->fbd_mmap; 315 316 if (map == NULL) 317 return (-1); 318 return (map(makedev(0, nunit), off, prot)); 319 } 320 321 void 322 fb_setsize_obp(struct fbdevice *fb, int depth, int def_width, int def_height, int node) 323 { 324 fb->fb_type.fb_width = prom_getpropint(node, "width", def_width); 325 fb->fb_type.fb_height = prom_getpropint(node, "height", def_height); 326 fb->fb_linebytes = prom_getpropint(node, "linebytes", 327 (fb->fb_type.fb_width * depth) / 8); 328 } 329 330 void 331 fb_setsize_eeprom(struct fbdevice *fb, int depth, int def_width, int def_height) 332 { 333 #if !defined(SUN4U) 334 struct eeprom *eep = (struct eeprom *)eeprom_va; 335 336 if (!CPU_ISSUN4) { 337 printf("fb_setsize_eeprom: not sun4\n"); 338 return; 339 } 340 341 /* Set up some defaults. */ 342 fb->fb_type.fb_width = def_width; 343 fb->fb_type.fb_height = def_height; 344 345 if (fb->fb_flags & FB_PFOUR) { 346 #if NPFOUR > 0 347 fb_setsize_pfour(fb); 348 #endif 349 } else if (eep != NULL) { 350 switch (eep->eeScreenSize) { 351 case EE_SCR_1152X900: 352 fb->fb_type.fb_width = 1152; 353 fb->fb_type.fb_height = 900; 354 break; 355 356 case EE_SCR_1024X1024: 357 fb->fb_type.fb_width = 1024; 358 fb->fb_type.fb_height = 1024; 359 break; 360 361 case EE_SCR_1600X1280: 362 fb->fb_type.fb_width = 1600; 363 fb->fb_type.fb_height = 1280; 364 break; 365 366 case EE_SCR_1440X1440: 367 fb->fb_type.fb_width = 1440; 368 fb->fb_type.fb_height = 1440; 369 break; 370 371 default: 372 /* 373 * XXX: Do nothing, I guess. 374 * Should we print a warning about 375 * an unknown value? --thorpej 376 */ 377 break; 378 } 379 } 380 381 fb->fb_linebytes = (fb->fb_type.fb_width * depth) / 8; 382 #endif /* !SUN4U */ 383 } 384 385 386 387 #ifdef RASTERCONSOLE 388 static void fb_bell(int); 389 390 static void 391 fb_bell(int on) 392 { 393 #if NKBD > 0 394 kbd_bell(on); 395 #endif 396 } 397 398 void 399 fbrcons_init(struct fbdevice *fb) 400 { 401 struct rconsole *rc = &fb->fb_rcons; 402 struct rasops_info *ri = &fb->fb_rinfo; 403 int maxrow, maxcol; 404 #if !defined(RASTERCONS_FULLSCREEN) 405 int *row, *col; 406 #endif 407 408 /* Set up what rasops needs to know about */ 409 memset(ri, 0, sizeof *ri); 410 ri->ri_stride = fb->fb_linebytes; 411 ri->ri_bits = (void *)fb->fb_pixels; 412 ri->ri_depth = fb->fb_type.fb_depth; 413 ri->ri_width = fb->fb_type.fb_width; 414 ri->ri_height = fb->fb_type.fb_height; 415 maxrow = 5000; 416 maxcol = 5000; 417 418 #if !defined(RASTERCONS_FULLSCREEN) 419 #if !defined(SUN4U) 420 if (CPU_ISSUN4) { 421 struct eeprom *eep = (struct eeprom *)eeprom_va; 422 423 if (eep == NULL) { 424 maxcol = 80; 425 maxrow = 34; 426 } else { 427 maxcol = eep->eeTtyCols; 428 maxrow = eep->eeTtyRows; 429 } 430 } 431 #endif /* !SUN4U */ 432 if (!CPU_ISSUN4) { 433 char buf[6+1]; /* Enough for six digits */ 434 maxcol = (prom_getoption("screen-#columns", buf, sizeof buf) == 0) 435 ? strtoul(buf, NULL, 10) 436 : 80; 437 438 maxrow = (prom_getoption("screen-#rows", buf, sizeof buf) != 0) 439 ? strtoul(buf, NULL, 10) 440 : 34; 441 442 } 443 #endif /* !RASTERCONS_FULLSCREEN */ 444 /* 445 * - force monochrome output 446 * - eraserows() hack to clear the *entire* display 447 * - cursor is currently enabled 448 * - center output 449 */ 450 ri->ri_flg = RI_FULLCLEAR | RI_CURSOR | RI_CENTER; 451 452 /* Get operations set and connect to rcons */ 453 if (rasops_init(ri, maxrow, maxcol)) 454 panic("fbrcons_init: rasops_init failed!"); 455 456 if (ri->ri_depth == 8) { 457 int i; 458 for (i = 0; i < 16; i++) { 459 460 /* 461 * Cmap entries are repeated four times in the 462 * 32 bit wide `devcmap' entries for optimization 463 * purposes; see rasops(9) 464 */ 465 #define I_TO_DEVCMAP(i) ((i) | ((i)<<8) | ((i)<<16) | ((i)<<24)) 466 467 /* 468 * Use existing colormap entries for black and white 469 */ 470 if ((i & 7) == WSCOL_BLACK) { 471 ri->ri_devcmap[i] = I_TO_DEVCMAP(255); 472 continue; 473 } 474 475 if ((i & 7) == WSCOL_WHITE) { 476 ri->ri_devcmap[i] = I_TO_DEVCMAP(0); 477 continue; 478 } 479 /* 480 * Other entries refer to ANSI map, which for now 481 * is setup in bt_subr.c 482 */ 483 ri->ri_devcmap[i] = I_TO_DEVCMAP(i + 1); 484 #undef I_TO_DEVCMAP 485 } 486 } 487 488 rc->rc_row = rc->rc_col = 0; 489 #if !defined(RASTERCONS_FULLSCREEN) 490 /* Determine addresses of prom emulator row and column */ 491 if (!CPU_ISSUN4 && !romgetcursoraddr(&row, &col)) { 492 rc->rc_row = *row; 493 rc->rc_col = *col; 494 } 495 #endif 496 ri->ri_crow = rc->rc_row; 497 ri->ri_ccol = rc->rc_col; 498 499 rc->rc_ops = &ri->ri_ops; 500 rc->rc_cookie = ri; 501 rc->rc_bell = fb_bell; 502 rc->rc_maxcol = ri->ri_cols; 503 rc->rc_maxrow = ri->ri_rows; 504 rc->rc_width = ri->ri_emuwidth; 505 rc->rc_height = ri->ri_emuheight; 506 rc->rc_deffgcolor = WSCOL_BLACK; 507 rc->rc_defbgcolor = WSCOL_WHITE; 508 rcons_init(rc, 0); 509 510 /* Hook up virtual console */ 511 v_putc = rcons_cnputc; 512 } 513 514 int 515 fbrcons_rows(void) 516 { 517 return ((fblist.fb_dev != NULL) ? 518 fblist.fb_dev->fb_rcons.rc_maxrow : 0); 519 } 520 521 int 522 fbrcons_cols(void) 523 { 524 return ((fblist.fb_dev != NULL) ? 525 fblist.fb_dev->fb_rcons.rc_maxcol : 0); 526 } 527 #endif /* RASTERCONSOLE */ 528
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