1 /* $OpenBSD: fb.c,v 1.23 2011/04/07 15:30:16 miod Exp $ */ 2 /* $NetBSD: fb.c,v 1.23 1997/07/07 23:30:22 pk Exp $ */ 3 4 /* 5 * Copyright (c) 2002, 2004, 2008 Miodrag Vallat. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 21 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 23 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 26 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 * 29 * 30 * Copyright (c) 1992, 1993 31 * The Regents of the University of California. All rights reserved. 32 * 33 * This software was developed by the Computer Systems Engineering group 34 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 35 * contributed to Berkeley. 36 * 37 * All advertising materials mentioning features or use of this software 38 * must display the following acknowledgement: 39 * This product includes software developed by the University of 40 * California, Lawrence Berkeley Laboratory. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)fb.c 8.1 (Berkeley) 6/11/93 67 */ 68 69 /* 70 * Common wsdisplay framebuffer drivers helpers. 71 */ 72 73 #include <sys/param.h> 74 #include <sys/systm.h> 75 #include <sys/device.h> 76 #include <sys/proc.h> 77 #include <sys/conf.h> 78 79 #include <machine/autoconf.h> 80 #include <machine/conf.h> 81 #include <machine/openfirm.h> 82 83 #include <dev/wscons/wsdisplayvar.h> 84 #include <dev/rasops/rasops.h> 85 #include <machine/fbvar.h> 86 87 #include "wsdisplay.h" 88 89 /* 90 * Sun specific color indexes. 91 * Black is not really 7, but rather ~0; to fit within the 8 ANSI color 92 * palette we are using on console, we pick (~0) & 0x07 instead. 93 * This essentially swaps WSCOL_BLACK and WSCOL_WHITE. 94 */ 95 #define WSCOL_SUN_WHITE 0 96 #define WSCOL_SUN_BLACK 7 97 98 /* 99 * emergency unblank code 100 * XXX should be somewhat moved to wscons MI code 101 */ 102 103 void (*fb_burner)(void *, u_int, u_int); 104 void *fb_cookie; 105 106 void 107 fb_unblank() 108 { 109 if (fb_burner != NULL) 110 (*fb_burner)(fb_cookie, 1, 0); 111 } 112 113 #if NWSDISPLAY > 0 114 115 static int a2int(char *, int); 116 int fb_get_console_metrics(int *, int *, int *, int *); 117 void fb_initwsd(struct sunfb *); 118 void fb_updatecursor(struct rasops_info *); 119 120 int fb_alloc_screen(void *, const struct wsscreen_descr *, void **, 121 int *, int *, long *); 122 void fb_free_screen(void *, void *); 123 int fb_show_screen(void *, void *, int, void (*)(void *, int, int), 124 void *); 125 126 void 127 fb_setsize(struct sunfb *sf, int def_depth, int def_width, int def_height, 128 int node, int unused) 129 { 130 int def_linebytes; 131 132 sf->sf_depth = getpropint(node, "depth", def_depth); 133 sf->sf_width = getpropint(node, "width", def_width); 134 sf->sf_height = getpropint(node, "height", def_height); 135 136 def_linebytes = 137 roundup(sf->sf_width, sf->sf_depth) * sf->sf_depth / 8; 138 sf->sf_linebytes = getpropint(node, "linebytes", def_linebytes); 139 140 /* 141 * XXX If we are configuring a board in a wider depth level 142 * than the mode it is currently operating in, the PROM will 143 * return a linebytes property tied to the current depth value, 144 * which is NOT what we are relying upon! 145 */ 146 if (sf->sf_linebytes < (sf->sf_width * sf->sf_depth) / 8) 147 sf->sf_linebytes = def_linebytes; 148 149 sf->sf_fbsize = sf->sf_height * sf->sf_linebytes; 150 } 151 152 static int 153 a2int(char *cp, int deflt) 154 { 155 int i = 0; 156 157 if (*cp == '\0') 158 return (deflt); 159 while (*cp != '\0') 160 i = i * 10 + *cp++ - '0'; 161 return (i); 162 } 163 164 /* setup the embedded wsscreen_descr structure from rasops settings */ 165 void 166 fb_initwsd(struct sunfb *sf) 167 { 168 strlcpy(sf->sf_wsd.name, "std", sizeof(sf->sf_wsd.name)); 169 sf->sf_wsd.capabilities = sf->sf_ro.ri_caps; 170 sf->sf_wsd.nrows = sf->sf_ro.ri_rows; 171 sf->sf_wsd.ncols = sf->sf_ro.ri_cols; 172 sf->sf_wsd.textops = &sf->sf_ro.ri_ops; 173 } 174 175 void 176 fb_updatecursor(struct rasops_info *ri) 177 { 178 struct sunfb *sf = (struct sunfb *)ri->ri_hw; 179 180 if (sf->sf_crowp != NULL) 181 *sf->sf_crowp = ri->ri_crow; 182 if (sf->sf_ccolp != NULL) 183 *sf->sf_ccolp = ri->ri_ccol; 184 } 185 186 void 187 fbwscons_init(struct sunfb *sf, int flags, int isconsole) 188 { 189 struct rasops_info *ri = &sf->sf_ro; 190 int cols, rows, fw, fh, wt, wl; 191 192 /* ri_hw and ri_bits must have already been setup by caller */ 193 ri->ri_flg = RI_FULLCLEAR | flags; 194 ri->ri_depth = sf->sf_depth; 195 ri->ri_stride = sf->sf_linebytes; 196 ri->ri_width = sf->sf_width; 197 ri->ri_height = sf->sf_height; 198 199 rows = a2int(getpropstring(optionsnode, "screen-#rows"), 34); 200 cols = a2int(getpropstring(optionsnode, "screen-#columns"), 80); 201 202 /* 203 * If the framebuffer width is under 960 pixels, rasops will 204 * switch from the 12x22 font to the more adequate 8x16 font 205 * here. 206 * If we are the console device, we need to adjust two things: 207 * - the display row should be overrided from the current PROM 208 * metrics, since it will not match the PROM reality anymore. 209 * - the screen needs to be cleared. 210 * 211 * However, to accomodate laptops with specific small fonts, 212 * it is necessary to compare the resolution with the actual 213 * font metrics. 214 */ 215 216 if (isconsole) { 217 if (fb_get_console_metrics(&fw, &fh, &wt, &wl) != 0) { 218 /* 219 * Assume a 12x22 prom font and a centered 220 * 80x34 console window. 221 */ 222 fw = 12; fh = 22; 223 wt = wl = 0; 224 } else { 225 /* 226 * Make sure window-top and window-left 227 * values are consistent with the font metrics. 228 */ 229 if (wt <= 0 || wt > sf->sf_height - rows * fh || 230 wl <= 0 || wl > sf->sf_width - cols * fw) 231 wt = wl = 0; 232 } 233 if (wt == 0 /* || wl == 0 */) { 234 ri->ri_flg |= RI_CENTER; 235 236 /* 237 * Since the console window might not be 238 * centered (e.g. on a 1280x1024 vigra 239 * VS-12 frame buffer), have rasops 240 * clear the margins even if the screen is 241 * not cleared. 242 */ 243 ri->ri_flg |= RI_CLEARMARGINS; 244 } 245 246 if (ri->ri_wsfcookie != 0) { 247 /* driver handles font issues. do nothing. */ 248 } else { 249 /* 250 * If the PROM uses a different font than the 251 * one we are expecting it to use, or if the 252 * display is shorter than 960 pixels wide, 253 * we'll force a screen clear. 254 */ 255 if (fw != 12 || sf->sf_width < 12 * 80) 256 ri->ri_flg |= RI_CLEAR | RI_CENTER; 257 } 258 } else { 259 ri->ri_flg |= RI_CLEAR | RI_CENTER; 260 } 261 262 /* ifb(4) doesn't set ri_bits at the moment */ 263 if (ri->ri_bits == NULL) 264 ri->ri_flg &= ~(RI_CLEAR | RI_CLEARMARGINS); 265 266 rasops_init(ri, rows, cols); 267 268 /* 269 * If this is the console display and there is no font change, 270 * adjust our terminal window to the position of the PROM 271 * window - in case it is not exactly centered. 272 */ 273 if ((ri->ri_flg & RI_CENTER) == 0) { 274 /* code above made sure wt and wl are initialized */ 275 ri->ri_bits += wt * ri->ri_stride; 276 if (ri->ri_depth >= 8) /* for 15bpp to compute ok */ 277 ri->ri_bits += wl * ri->ri_pelbytes; 278 else 279 ri->ri_bits += (wl * ri->ri_depth) >> 3; 280 281 ri->ri_xorigin = wl; 282 ri->ri_yorigin = wt; 283 } 284 285 if (sf->sf_depth == 8) { 286 /* 287 * If we are running with an indexed palette, compensate 288 * the swap of black and white through ri_devcmap. 289 */ 290 ri->ri_devcmap[WSCOL_SUN_BLACK] = 0; 291 ri->ri_devcmap[WSCOL_SUN_WHITE] = 0xffffffff; 292 } else if (sf->sf_depth > 8) { 293 /* 294 * If we are running on a direct color frame buffer, 295 * make the ``normal'' white the same as the highlighted 296 * white. 297 */ 298 ri->ri_devcmap[WSCOL_WHITE] = ri->ri_devcmap[WSCOL_WHITE + 8]; 299 } 300 } 301 302 void 303 fbwscons_console_init(struct sunfb *sf, int row) 304 { 305 struct rasops_info *ri = &sf->sf_ro; 306 long defattr; 307 308 if (romgetcursoraddr(&sf->sf_crowp, &sf->sf_ccolp)) 309 sf->sf_ccolp = sf->sf_crowp = NULL; 310 if (sf->sf_ccolp != NULL) 311 ri->ri_ccol = *sf->sf_ccolp; 312 313 if (ri->ri_flg & RI_CLEAR) { 314 /* 315 * If we have cleared the screen, this is because either 316 * we are not the console display, or the font has been 317 * changed. 318 * In this case, choose not to keep pointers to the PROM 319 * cursor position, as the values are likely to be inaccurate 320 * upon shutdown... 321 */ 322 sf->sf_crowp = sf->sf_ccolp = NULL; 323 row = 0; 324 } 325 326 if (row < 0) /* no override */ { 327 if (sf->sf_crowp != NULL) 328 ri->ri_crow = *sf->sf_crowp; 329 else 330 /* assume last row */ 331 ri->ri_crow = ri->ri_rows - 1; 332 } else { 333 ri->ri_crow = row; 334 } 335 336 /* 337 * Scale back rows and columns if the font would not otherwise 338 * fit on this display. Without this we would panic later. 339 */ 340 if (ri->ri_crow >= ri->ri_rows) 341 ri->ri_crow = ri->ri_rows - 1; 342 if (ri->ri_ccol >= ri->ri_cols) 343 ri->ri_ccol = ri->ri_cols - 1; 344 345 /* 346 * Take care of updating the PROM cursor position as well if we can. 347 */ 348 if (ri->ri_updatecursor != NULL && 349 (sf->sf_ccolp != NULL || sf->sf_crowp != NULL)) 350 ri->ri_updatecursor = fb_updatecursor; 351 352 if (ISSET(ri->ri_caps, WSSCREEN_WSCOLORS)) 353 ri->ri_ops.alloc_attr(ri, 354 WSCOL_BLACK, WSCOL_WHITE, WSATTR_WSCOLORS, &defattr); 355 else 356 ri->ri_ops.alloc_attr(ri, 0, 0, 0, &defattr); 357 358 fb_initwsd(sf); 359 wsdisplay_cnattach(&sf->sf_wsd, ri, ri->ri_ccol, ri->ri_crow, defattr); 360 } 361 362 void 363 fbwscons_setcolormap(struct sunfb *sf, 364 void (*setcolor)(void *, u_int, u_int8_t, u_int8_t, u_int8_t)) 365 { 366 int i; 367 const u_char *color; 368 369 if (sf->sf_depth <= 8 && setcolor != NULL) { 370 for (i = 0; i < 16; i++) { 371 color = &rasops_cmap[i * 3]; 372 setcolor(sf, i, color[0], color[1], color[2]); 373 } 374 for (i = 240; i < 256; i++) { 375 color = &rasops_cmap[i * 3]; 376 setcolor(sf, i, color[0], color[1], color[2]); 377 } 378 /* 379 * Compensate for BoW default hardware palette: existing 380 * output (which we do not want to affect) is black on 381 * white with color index 0 being white and 0xff being 382 * black. 383 */ 384 setcolor(sf, WSCOL_SUN_WHITE, 0xff, 0xff, 0xff); 385 setcolor(sf, 0xff ^ WSCOL_SUN_WHITE, 0, 0, 0); 386 setcolor(sf, WSCOL_SUN_BLACK, 0, 0, 0); 387 setcolor(sf, 0xff ^ (WSCOL_SUN_BLACK), 0xff, 0xff, 0xff); 388 } 389 } 390 391 void 392 fbwscons_attach(struct sunfb *sf, struct wsdisplay_accessops *op, int isconsole) 393 { 394 struct wsemuldisplaydev_attach_args waa; 395 396 if (isconsole == 0) { 397 /* done in wsdisplay_cnattach() earlier if console */ 398 fb_initwsd(sf); 399 } else { 400 /* remember screen burner routine */ 401 fb_burner = op->burn_screen; 402 fb_cookie = sf; 403 } 404 405 /* plug common wsdisplay_accessops if necessary */ 406 if (op->alloc_screen == NULL) { 407 op->alloc_screen = fb_alloc_screen; 408 op->free_screen = fb_free_screen; 409 op->show_screen = fb_show_screen; 410 } 411 412 sf->sf_scrlist[0] = &sf->sf_wsd; 413 sf->sf_wsl.nscreens = 1; 414 sf->sf_wsl.screens = (const struct wsscreen_descr **)sf->sf_scrlist; 415 416 waa.console = isconsole; 417 waa.scrdata = &sf->sf_wsl; 418 waa.accessops = op; 419 waa.accesscookie = sf; 420 waa.defaultscreens = 0; 421 config_found(&sf->sf_dev, &waa, wsemuldisplaydevprint); 422 } 423 424 /* 425 * Common wsdisplay_accessops routines. 426 */ 427 int 428 fb_alloc_screen(void *v, const struct wsscreen_descr *type, 429 void **cookiep, int *curxp, int *curyp, long *attrp) 430 { 431 struct sunfb *sf = v; 432 struct rasops_info *ri = &sf->sf_ro; 433 434 if (sf->sf_nscreens > 0) 435 return (ENOMEM); 436 437 *cookiep = ri; 438 *curyp = 0; 439 *curxp = 0; 440 if (ISSET(ri->ri_caps, WSSCREEN_WSCOLORS)) 441 ri->ri_ops.alloc_attr(ri, 442 WSCOL_BLACK, WSCOL_WHITE, WSATTR_WSCOLORS, attrp); 443 else 444 ri->ri_ops.alloc_attr(ri, 0, 0, 0, attrp); 445 sf->sf_nscreens++; 446 return (0); 447 } 448 449 void 450 fb_free_screen(void *v, void *cookie) 451 { 452 struct sunfb *sf = v; 453 454 sf->sf_nscreens--; 455 } 456 457 int 458 fb_show_screen(void *v, void *cookie, int waitok, void (*cb)(void *, int, int), 459 void *cbarg) 460 { 461 return (0); 462 } 463 464 int 465 fb_get_console_metrics(int *fontwidth, int *fontheight, int *wtop, int *wleft) 466 { 467 cell_t romheight, romwidth, windowtop, windowleft; 468 469 /* 470 * Get the PROM font metrics and address 471 */ 472 OF_interpret("stdout @ is my-self " 473 "addr char-height addr char-width " 474 "addr window-top addr window-left", 475 4, &windowleft, &windowtop, &romwidth, &romheight); 476 477 if (romheight == 0 || romwidth == 0 || 478 windowtop == 0 || windowleft == 0) 479 return (1); 480 481 *fontwidth = (int)*(uint64_t *)romwidth; 482 *fontheight = (int)*(uint64_t *)romheight; 483 *wtop = (int)*(uint64_t *)windowtop; 484 *wleft = (int)*(uint64_t *)windowleft; 485 486 return (0); 487 } 488 489 #endif /* NWSDISPLAY */ 490