genfb.c revision 1.67
1 /* $NetBSD: genfb.c,v 1.67 2019/07/29 14:07:37 rin Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 Michael Lorenz 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: genfb.c,v 1.67 2019/07/29 14:07:37 rin Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/device.h> 36 #include <sys/proc.h> 37 #include <sys/mutex.h> 38 #include <sys/ioctl.h> 39 #include <sys/kernel.h> 40 #include <sys/systm.h> 41 #include <sys/kmem.h> 42 43 #include <dev/wscons/wsconsio.h> 44 #include <dev/wscons/wsdisplayvar.h> 45 #include <dev/rasops/rasops.h> 46 #include <dev/wsfont/wsfont.h> 47 48 #include <dev/wscons/wsdisplay_vconsvar.h> 49 50 #include <dev/wsfb/genfbvar.h> 51 52 #include <dev/videomode/videomode.h> 53 #include <dev/videomode/edidvar.h> 54 55 #ifdef GENFB_DISABLE_TEXT 56 #include <sys/reboot.h> 57 #define DISABLESPLASH (boothowto & (RB_SINGLE | RB_USERCONF | RB_ASKNAME | \ 58 AB_VERBOSE | AB_DEBUG) ) 59 #endif 60 61 #ifdef _KERNEL_OPT 62 #include "opt_genfb.h" 63 #include "opt_wsfb.h" 64 #include "opt_rasops.h" 65 #endif 66 67 #ifdef GENFB_DEBUG 68 #define GPRINTF panic 69 #else 70 #define GPRINTF aprint_debug 71 #endif 72 73 #define GENFB_BRIGHTNESS_STEP 15 74 #define GENFB_CHAR_WIDTH_MM 3 75 76 static int genfb_ioctl(void *, void *, u_long, void *, int, struct lwp *); 77 static paddr_t genfb_mmap(void *, void *, off_t, int); 78 static void genfb_pollc(void *, int); 79 80 static void genfb_init_screen(void *, struct vcons_screen *, int, long *); 81 static int genfb_calc_hsize(struct genfb_softc *); 82 static int genfb_calc_cols(struct genfb_softc *); 83 84 static int genfb_putcmap(struct genfb_softc *, struct wsdisplay_cmap *); 85 static int genfb_getcmap(struct genfb_softc *, struct wsdisplay_cmap *); 86 static int genfb_putpalreg(struct genfb_softc *, uint8_t, uint8_t, 87 uint8_t, uint8_t); 88 static void genfb_init_palette(struct genfb_softc *); 89 90 static void genfb_brightness_up(device_t); 91 static void genfb_brightness_down(device_t); 92 93 extern const u_char rasops_cmap[768]; 94 95 static int genfb_cnattach_called = 0; 96 static int genfb_enabled = 1; 97 98 static struct genfb_softc *genfb_softc = NULL; 99 100 void 101 genfb_init(struct genfb_softc *sc) 102 { 103 prop_dictionary_t dict; 104 uint64_t cmap_cb, pmf_cb, mode_cb, bl_cb, br_cb, fbaddr; 105 uint32_t fboffset; 106 bool console; 107 108 dict = device_properties(sc->sc_dev); 109 #ifdef GENFB_DEBUG 110 printf("%s", prop_dictionary_externalize(dict)); 111 #endif 112 prop_dictionary_get_bool(dict, "is_console", &console); 113 114 if (!prop_dictionary_get_uint32(dict, "width", &sc->sc_width)) { 115 GPRINTF("no width property\n"); 116 return; 117 } 118 if (!prop_dictionary_get_uint32(dict, "height", &sc->sc_height)) { 119 GPRINTF("no height property\n"); 120 return; 121 } 122 if (!prop_dictionary_get_uint32(dict, "depth", &sc->sc_depth)) { 123 GPRINTF("no depth property\n"); 124 return; 125 } 126 127 /* XXX should be a 64bit value */ 128 if (!prop_dictionary_get_uint32(dict, "address", &fboffset)) { 129 GPRINTF("no address property\n"); 130 return; 131 } 132 133 sc->sc_fboffset = fboffset; 134 135 sc->sc_fbaddr = NULL; 136 if (prop_dictionary_get_uint64(dict, "virtual_address", &fbaddr)) { 137 sc->sc_fbaddr = (void *)(uintptr_t)fbaddr; 138 } 139 140 sc->sc_shadowfb = NULL; 141 if (!prop_dictionary_get_bool(dict, "enable_shadowfb", 142 &sc->sc_enable_shadowfb)) 143 #ifdef GENFB_SHADOWFB 144 sc->sc_enable_shadowfb = true; 145 #else 146 sc->sc_enable_shadowfb = false; 147 #endif 148 149 if (!prop_dictionary_get_uint32(dict, "linebytes", &sc->sc_stride)) 150 sc->sc_stride = (sc->sc_width * sc->sc_depth) >> 3; 151 152 /* 153 * deal with a bug in the Raptor firmware which always sets 154 * stride = width even when depth != 8 155 */ 156 if (sc->sc_stride < sc->sc_width * (sc->sc_depth >> 3)) 157 sc->sc_stride = sc->sc_width * (sc->sc_depth >> 3); 158 159 sc->sc_fbsize = sc->sc_height * sc->sc_stride; 160 161 /* optional colour map callback */ 162 sc->sc_cmcb = NULL; 163 if (prop_dictionary_get_uint64(dict, "cmap_callback", &cmap_cb)) { 164 if (cmap_cb != 0) 165 sc->sc_cmcb = (void *)(vaddr_t)cmap_cb; 166 } 167 168 /* optional pmf callback */ 169 sc->sc_pmfcb = NULL; 170 if (prop_dictionary_get_uint64(dict, "pmf_callback", &pmf_cb)) { 171 if (pmf_cb != 0) 172 sc->sc_pmfcb = (void *)(vaddr_t)pmf_cb; 173 } 174 175 /* optional mode callback */ 176 sc->sc_modecb = NULL; 177 if (prop_dictionary_get_uint64(dict, "mode_callback", &mode_cb)) { 178 if (mode_cb != 0) 179 sc->sc_modecb = (void *)(vaddr_t)mode_cb; 180 } 181 182 /* optional backlight control callback */ 183 sc->sc_backlight = NULL; 184 if (prop_dictionary_get_uint64(dict, "backlight_callback", &bl_cb)) { 185 if (bl_cb != 0) { 186 sc->sc_backlight = (void *)(vaddr_t)bl_cb; 187 aprint_naive_dev(sc->sc_dev, 188 "enabling backlight control\n"); 189 } 190 } 191 192 /* optional brightness control callback */ 193 sc->sc_brightness = NULL; 194 if (prop_dictionary_get_uint64(dict, "brightness_callback", &br_cb)) { 195 if (br_cb != 0) { 196 sc->sc_brightness = (void *)(vaddr_t)br_cb; 197 aprint_naive_dev(sc->sc_dev, 198 "enabling brightness control\n"); 199 if (console && 200 sc->sc_brightness->gpc_upd_parameter != NULL) { 201 pmf_event_register(sc->sc_dev, 202 PMFE_DISPLAY_BRIGHTNESS_UP, 203 genfb_brightness_up, TRUE); 204 pmf_event_register(sc->sc_dev, 205 PMFE_DISPLAY_BRIGHTNESS_DOWN, 206 genfb_brightness_down, TRUE); 207 } 208 } 209 } 210 } 211 212 int 213 genfb_attach(struct genfb_softc *sc, struct genfb_ops *ops) 214 { 215 struct wsemuldisplaydev_attach_args aa; 216 prop_dictionary_t dict; 217 struct rasops_info *ri; 218 uint16_t crow; 219 long defattr; 220 bool console; 221 #ifdef SPLASHSCREEN 222 int i, j; 223 int error = ENXIO; 224 #endif 225 226 dict = device_properties(sc->sc_dev); 227 prop_dictionary_get_bool(dict, "is_console", &console); 228 229 if (prop_dictionary_get_uint16(dict, "cursor-row", &crow) == false) 230 crow = 0; 231 if (prop_dictionary_get_bool(dict, "clear-screen", &sc->sc_want_clear) 232 == false) 233 sc->sc_want_clear = true; 234 235 aprint_verbose_dev(sc->sc_dev, "framebuffer at %p, size %dx%d, depth %d, " 236 "stride %d\n", 237 sc->sc_fboffset ? (void *)(intptr_t)sc->sc_fboffset : sc->sc_fbaddr, 238 sc->sc_width, sc->sc_height, sc->sc_depth, sc->sc_stride); 239 240 sc->sc_defaultscreen_descr = (struct wsscreen_descr){ 241 "default", 242 0, 0, 243 NULL, 244 8, 16, 245 WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE | 246 WSSCREEN_RESIZE, 247 NULL 248 }; 249 sc->sc_screens[0] = &sc->sc_defaultscreen_descr; 250 sc->sc_screenlist = (struct wsscreen_list){1, sc->sc_screens}; 251 memcpy(&sc->sc_ops, ops, sizeof(struct genfb_ops)); 252 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 253 if (sc->sc_modecb != NULL) 254 sc->sc_modecb->gmc_setmode(sc, sc->sc_mode); 255 256 sc->sc_accessops.ioctl = genfb_ioctl; 257 sc->sc_accessops.mmap = genfb_mmap; 258 sc->sc_accessops.pollc = genfb_pollc; 259 260 if (sc->sc_enable_shadowfb) { 261 sc->sc_shadowfb = kmem_alloc(sc->sc_fbsize, KM_SLEEP); 262 if (sc->sc_want_clear == false) 263 memcpy(sc->sc_shadowfb, sc->sc_fbaddr, sc->sc_fbsize); 264 } 265 266 vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr, 267 &sc->sc_accessops); 268 sc->vd.init_screen = genfb_init_screen; 269 270 /* Do not print anything between this point and the screen 271 * clear operation below. Otherwise it will be lost. */ 272 273 ri = &sc->sc_console_screen.scr_ri; 274 275 vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, 276 &defattr); 277 sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 278 279 #ifdef SPLASHSCREEN 280 /* 281 * If system isn't going to go multiuser, or user has requested to see 282 * boot text, don't render splash screen immediately 283 */ 284 if (DISABLESPLASH) 285 #endif 286 vcons_redraw_screen(&sc->sc_console_screen); 287 288 sc->sc_defaultscreen_descr.textops = &ri->ri_ops; 289 sc->sc_defaultscreen_descr.capabilities = ri->ri_caps; 290 sc->sc_defaultscreen_descr.nrows = ri->ri_rows; 291 sc->sc_defaultscreen_descr.ncols = ri->ri_cols; 292 293 if (crow >= ri->ri_rows) { 294 crow = 0; 295 sc->sc_want_clear = 1; 296 } 297 298 if (console) 299 wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, crow, 300 defattr); 301 302 /* Clear the whole screen to bring it to a known state. */ 303 if (sc->sc_want_clear) 304 (*ri->ri_ops.eraserows)(ri, 0, ri->ri_rows, defattr); 305 306 #ifdef SPLASHSCREEN 307 j = 0; 308 for (i = 0; i < uimin(1 << sc->sc_depth, 256); i++) { 309 if (i >= SPLASH_CMAP_OFFSET && 310 i < SPLASH_CMAP_OFFSET + SPLASH_CMAP_SIZE) { 311 splash_get_cmap(i, 312 &sc->sc_cmap_red[i], 313 &sc->sc_cmap_green[i], 314 &sc->sc_cmap_blue[i]); 315 } else { 316 sc->sc_cmap_red[i] = rasops_cmap[j]; 317 sc->sc_cmap_green[i] = rasops_cmap[j + 1]; 318 sc->sc_cmap_blue[i] = rasops_cmap[j + 2]; 319 } 320 j += 3; 321 } 322 genfb_restore_palette(sc); 323 324 sc->sc_splash.si_depth = sc->sc_depth; 325 sc->sc_splash.si_bits = sc->sc_console_screen.scr_ri.ri_origbits; 326 sc->sc_splash.si_hwbits = sc->sc_fbaddr; 327 sc->sc_splash.si_width = sc->sc_width; 328 sc->sc_splash.si_height = sc->sc_height; 329 sc->sc_splash.si_stride = sc->sc_stride; 330 sc->sc_splash.si_fillrect = NULL; 331 if (!DISABLESPLASH) { 332 error = splash_render(&sc->sc_splash, 333 SPLASH_F_CENTER|SPLASH_F_FILL); 334 if (error) { 335 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 336 genfb_init_palette(sc); 337 vcons_replay_msgbuf(&sc->sc_console_screen); 338 } 339 } 340 #else 341 genfb_init_palette(sc); 342 if (console) 343 vcons_replay_msgbuf(&sc->sc_console_screen); 344 #endif 345 346 if (genfb_softc == NULL) 347 genfb_softc = sc; 348 349 aa.console = console; 350 aa.scrdata = &sc->sc_screenlist; 351 aa.accessops = &sc->sc_accessops; 352 aa.accesscookie = &sc->vd; 353 354 #ifdef GENFB_DISABLE_TEXT 355 if (!DISABLESPLASH && error == 0) 356 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 357 #endif 358 359 config_found_ia(sc->sc_dev, "wsemuldisplaydev", &aa, 360 wsemuldisplaydevprint); 361 362 return 0; 363 } 364 365 static int 366 genfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 367 struct lwp *l) 368 { 369 struct vcons_data *vd = v; 370 struct genfb_softc *sc = vd->cookie; 371 struct wsdisplay_fbinfo *wdf; 372 struct vcons_screen *ms = vd->active; 373 struct wsdisplay_param *param; 374 int new_mode, error, val, ret; 375 376 switch (cmd) { 377 case WSDISPLAYIO_GINFO: 378 if (ms == NULL) 379 return ENODEV; 380 wdf = (void *)data; 381 wdf->height = ms->scr_ri.ri_height; 382 wdf->width = ms->scr_ri.ri_width; 383 wdf->depth = ms->scr_ri.ri_depth; 384 wdf->cmsize = 256; 385 return 0; 386 387 case WSDISPLAYIO_GETCMAP: 388 return genfb_getcmap(sc, 389 (struct wsdisplay_cmap *)data); 390 391 case WSDISPLAYIO_PUTCMAP: 392 return genfb_putcmap(sc, 393 (struct wsdisplay_cmap *)data); 394 395 case WSDISPLAYIO_LINEBYTES: 396 *(u_int *)data = sc->sc_stride; 397 return 0; 398 399 case WSDISPLAYIO_SMODE: 400 new_mode = *(int *)data; 401 402 /* notify the bus backend */ 403 error = 0; 404 if (sc->sc_ops.genfb_ioctl) 405 error = sc->sc_ops.genfb_ioctl(sc, vs, 406 cmd, data, flag, l); 407 if (error && error != EPASSTHROUGH) 408 return error; 409 410 if (new_mode != sc->sc_mode) { 411 sc->sc_mode = new_mode; 412 if (sc->sc_modecb != NULL) 413 sc->sc_modecb->gmc_setmode(sc, 414 sc->sc_mode); 415 if (new_mode == WSDISPLAYIO_MODE_EMUL) { 416 genfb_restore_palette(sc); 417 vcons_redraw_screen(ms); 418 } 419 } 420 return 0; 421 422 case WSDISPLAYIO_SSPLASH: 423 #if defined(SPLASHSCREEN) 424 if(*(int *)data == 1) { 425 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 426 splash_render(&sc->sc_splash, 427 SPLASH_F_CENTER|SPLASH_F_FILL); 428 } else { 429 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 430 genfb_init_palette(sc); 431 } 432 vcons_redraw_screen(ms); 433 return 0; 434 #else 435 return ENODEV; 436 #endif 437 case WSDISPLAYIO_GETPARAM: 438 param = (struct wsdisplay_param *)data; 439 switch (param->param) { 440 case WSDISPLAYIO_PARAM_BRIGHTNESS: 441 if (sc->sc_brightness == NULL) 442 return EPASSTHROUGH; 443 param->min = 0; 444 param->max = 255; 445 return sc->sc_brightness->gpc_get_parameter( 446 sc->sc_brightness->gpc_cookie, 447 ¶m->curval); 448 case WSDISPLAYIO_PARAM_BACKLIGHT: 449 if (sc->sc_backlight == NULL) 450 return EPASSTHROUGH; 451 param->min = 0; 452 param->max = 1; 453 return sc->sc_backlight->gpc_get_parameter( 454 sc->sc_backlight->gpc_cookie, 455 ¶m->curval); 456 } 457 return EPASSTHROUGH; 458 459 case WSDISPLAYIO_SETPARAM: 460 param = (struct wsdisplay_param *)data; 461 switch (param->param) { 462 case WSDISPLAYIO_PARAM_BRIGHTNESS: 463 if (sc->sc_brightness == NULL) 464 return EPASSTHROUGH; 465 val = param->curval; 466 if (val < 0) val = 0; 467 if (val > 255) val = 255; 468 return sc->sc_brightness->gpc_set_parameter( 469 sc->sc_brightness->gpc_cookie, val); 470 case WSDISPLAYIO_PARAM_BACKLIGHT: 471 if (sc->sc_backlight == NULL) 472 return EPASSTHROUGH; 473 val = param->curval; 474 if (val < 0) val = 0; 475 if (val > 1) val = 1; 476 return sc->sc_backlight->gpc_set_parameter( 477 sc->sc_backlight->gpc_cookie, val); 478 } 479 return EPASSTHROUGH; 480 } 481 ret = EPASSTHROUGH; 482 if (sc->sc_ops.genfb_ioctl) 483 ret = sc->sc_ops.genfb_ioctl(sc, vs, cmd, data, flag, l); 484 if (ret != EPASSTHROUGH) 485 return ret; 486 /* 487 * XXX 488 * handle these only if there either is no ioctl() handler or it didn't 489 * know how to deal with them. This allows bus frontends to override 490 * them but still provides fallback implementations 491 */ 492 switch (cmd) { 493 case WSDISPLAYIO_GET_EDID: { 494 495 struct wsdisplayio_edid_info *d = data; 496 return wsdisplayio_get_edid(sc->sc_dev, d); 497 } 498 499 case WSDISPLAYIO_GET_FBINFO: { 500 struct wsdisplayio_fbinfo *fbi = data; 501 return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); 502 } 503 } 504 return EPASSTHROUGH; 505 } 506 507 static paddr_t 508 genfb_mmap(void *v, void *vs, off_t offset, int prot) 509 { 510 struct vcons_data *vd = v; 511 struct genfb_softc *sc = vd->cookie; 512 513 if (sc->sc_ops.genfb_mmap) 514 return sc->sc_ops.genfb_mmap(sc, vs, offset, prot); 515 516 return -1; 517 } 518 519 static void 520 genfb_pollc(void *v, int on) 521 { 522 struct vcons_data *vd = v; 523 struct genfb_softc *sc = vd->cookie; 524 525 if (sc == NULL) 526 return; 527 528 if (on) 529 genfb_enable_polling(sc->sc_dev); 530 else 531 genfb_disable_polling(sc->sc_dev); 532 } 533 534 static void 535 genfb_init_screen(void *cookie, struct vcons_screen *scr, 536 int existing, long *defattr) 537 { 538 struct genfb_softc *sc = cookie; 539 struct rasops_info *ri = &scr->scr_ri; 540 int wantcols; 541 542 ri->ri_depth = sc->sc_depth; 543 ri->ri_width = sc->sc_width; 544 ri->ri_height = sc->sc_height; 545 ri->ri_stride = sc->sc_stride; 546 ri->ri_flg = RI_CENTER; 547 if (sc->sc_want_clear) 548 ri->ri_flg |= RI_FULLCLEAR; 549 550 scr->scr_flags |= VCONS_LOADFONT; 551 552 if (sc->sc_shadowfb != NULL) { 553 ri->ri_hwbits = (char *)sc->sc_fbaddr; 554 ri->ri_bits = (char *)sc->sc_shadowfb; 555 } else { 556 ri->ri_bits = (char *)sc->sc_fbaddr; 557 scr->scr_flags |= VCONS_DONT_READ; 558 } 559 560 if (existing && sc->sc_want_clear) 561 ri->ri_flg |= RI_CLEAR; 562 563 if (ri->ri_depth == 32 || ri->ri_depth == 24) { 564 ri->ri_flg |= RI_ENABLE_ALPHA; 565 566 bool is_bgr = false; 567 prop_dictionary_get_bool(device_properties(sc->sc_dev), 568 "is_bgr", &is_bgr); 569 if (is_bgr) { 570 /* someone requested BGR */ 571 ri->ri_rnum = 8; 572 ri->ri_gnum = 8; 573 ri->ri_bnum = 8; 574 ri->ri_rpos = 0; 575 ri->ri_gpos = 8; 576 ri->ri_bpos = 16; 577 } else { 578 /* assume RGB */ 579 ri->ri_rnum = 8; 580 ri->ri_gnum = 8; 581 ri->ri_bnum = 8; 582 ri->ri_rpos = 16; 583 ri->ri_gpos = 8; 584 ri->ri_bpos = 0; 585 } 586 } 587 588 if (ri->ri_depth == 16 || ri->ri_depth == 15) 589 ri->ri_flg |= RI_ENABLE_ALPHA; 590 591 if (ri->ri_depth == 8 && sc->sc_cmcb != NULL) 592 ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB; 593 594 wantcols = genfb_calc_cols(sc); 595 596 rasops_init(ri, 0, wantcols); 597 ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE | 598 WSSCREEN_RESIZE; 599 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 600 sc->sc_width / ri->ri_font->fontwidth); 601 602 /* TODO: actually center output */ 603 ri->ri_hw = scr; 604 605 #ifdef GENFB_DISABLE_TEXT 606 if (scr == &sc->sc_console_screen && !DISABLESPLASH) 607 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 608 #endif 609 } 610 611 /* Returns the width of the display in millimeters, or 0 if not known. */ 612 static int 613 genfb_calc_hsize(struct genfb_softc *sc) 614 { 615 device_t dev = sc->sc_dev; 616 prop_dictionary_t dict = device_properties(dev); 617 prop_data_t edid_data; 618 struct edid_info edid; 619 const char *edid_ptr; 620 621 edid_data = prop_dictionary_get(dict, "EDID"); 622 if (edid_data == NULL || prop_data_size(edid_data) < 128) 623 return 0; 624 625 edid_ptr = prop_data_data_nocopy(edid_data); 626 if (edid_parse(__UNCONST(edid_ptr), &edid) != 0) 627 return 0; 628 629 return (int)edid.edid_max_hsize * 10; 630 } 631 632 /* Return the minimum number of character columns based on DPI */ 633 static int 634 genfb_calc_cols(struct genfb_softc *sc) 635 { 636 const int hsize = genfb_calc_hsize(sc); 637 638 return MAX(RASOPS_DEFAULT_WIDTH, hsize / GENFB_CHAR_WIDTH_MM); 639 } 640 641 static int 642 genfb_putcmap(struct genfb_softc *sc, struct wsdisplay_cmap *cm) 643 { 644 u_char *r, *g, *b; 645 u_int index = cm->index; 646 u_int count = cm->count; 647 int i, error; 648 u_char rbuf[256], gbuf[256], bbuf[256]; 649 650 #ifdef GENFB_DEBUG 651 aprint_debug("putcmap: %d %d\n",index, count); 652 #endif 653 if (index >= 256 || count > 256 || index + count > 256) 654 return EINVAL; 655 656 error = copyin(cm->red, &rbuf[index], count); 657 if (error) 658 return error; 659 error = copyin(cm->green, &gbuf[index], count); 660 if (error) 661 return error; 662 error = copyin(cm->blue, &bbuf[index], count); 663 if (error) 664 return error; 665 666 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 667 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 668 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 669 670 r = &sc->sc_cmap_red[index]; 671 g = &sc->sc_cmap_green[index]; 672 b = &sc->sc_cmap_blue[index]; 673 674 for (i = 0; i < count; i++) { 675 genfb_putpalreg(sc, index, *r, *g, *b); 676 index++; 677 r++, g++, b++; 678 } 679 return 0; 680 } 681 682 static int 683 genfb_getcmap(struct genfb_softc *sc, struct wsdisplay_cmap *cm) 684 { 685 u_int index = cm->index; 686 u_int count = cm->count; 687 int error; 688 689 if (index >= 256 || count > 256 || index + count > 256) 690 return EINVAL; 691 692 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 693 if (error) 694 return error; 695 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 696 if (error) 697 return error; 698 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 699 if (error) 700 return error; 701 702 return 0; 703 } 704 705 void 706 genfb_restore_palette(struct genfb_softc *sc) 707 { 708 int i; 709 710 if (sc->sc_depth <= 8) { 711 for (i = 0; i < (1 << sc->sc_depth); i++) { 712 genfb_putpalreg(sc, i, sc->sc_cmap_red[i], 713 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 714 } 715 } 716 } 717 718 static void 719 genfb_init_palette(struct genfb_softc *sc) 720 { 721 int i, j, tmp; 722 723 if (sc->sc_depth == 8) { 724 /* generate an r3g3b2 colour map */ 725 for (i = 0; i < 256; i++) { 726 tmp = i & 0xe0; 727 /* 728 * replicate bits so 0xe0 maps to a red value of 0xff 729 * in order to make white look actually white 730 */ 731 tmp |= (tmp >> 3) | (tmp >> 6); 732 sc->sc_cmap_red[i] = tmp; 733 734 tmp = (i & 0x1c) << 3; 735 tmp |= (tmp >> 3) | (tmp >> 6); 736 sc->sc_cmap_green[i] = tmp; 737 738 tmp = (i & 0x03) << 6; 739 tmp |= tmp >> 2; 740 tmp |= tmp >> 4; 741 sc->sc_cmap_blue[i] = tmp; 742 743 genfb_putpalreg(sc, i, sc->sc_cmap_red[i], 744 sc->sc_cmap_green[i], 745 sc->sc_cmap_blue[i]); 746 } 747 } else { 748 /* steal rasops' ANSI cmap */ 749 j = 0; 750 for (i = 0; i < 256; i++) { 751 sc->sc_cmap_red[i] = rasops_cmap[j]; 752 sc->sc_cmap_green[i] = rasops_cmap[j + 1]; 753 sc->sc_cmap_blue[i] = rasops_cmap[j + 2]; 754 j += 3; 755 } 756 } 757 } 758 759 static int 760 genfb_putpalreg(struct genfb_softc *sc, uint8_t idx, uint8_t r, uint8_t g, 761 uint8_t b) 762 { 763 764 if (sc->sc_cmcb) { 765 766 sc->sc_cmcb->gcc_set_mapreg(sc->sc_cmcb->gcc_cookie, 767 idx, r, g, b); 768 } 769 return 0; 770 } 771 772 void 773 genfb_cnattach(void) 774 { 775 genfb_cnattach_called = 1; 776 } 777 778 void 779 genfb_disable(void) 780 { 781 genfb_enabled = 0; 782 } 783 784 int 785 genfb_is_console(void) 786 { 787 return genfb_cnattach_called; 788 } 789 790 int 791 genfb_is_enabled(void) 792 { 793 return genfb_enabled; 794 } 795 796 int 797 genfb_borrow(bus_addr_t addr, bus_space_handle_t *hdlp) 798 { 799 struct genfb_softc *sc = genfb_softc; 800 801 if (sc && sc->sc_ops.genfb_borrow) 802 return sc->sc_ops.genfb_borrow(sc, addr, hdlp); 803 return 0; 804 } 805 806 static void 807 genfb_brightness_up(device_t dev) 808 { 809 struct genfb_softc *sc = device_private(dev); 810 811 KASSERT(sc->sc_brightness != NULL && 812 sc->sc_brightness->gpc_upd_parameter != NULL); 813 814 (void)sc->sc_brightness->gpc_upd_parameter( 815 sc->sc_brightness->gpc_cookie, GENFB_BRIGHTNESS_STEP); 816 } 817 818 static void 819 genfb_brightness_down(device_t dev) 820 { 821 struct genfb_softc *sc = device_private(dev); 822 823 KASSERT(sc->sc_brightness != NULL && 824 sc->sc_brightness->gpc_upd_parameter != NULL); 825 826 (void)sc->sc_brightness->gpc_upd_parameter( 827 sc->sc_brightness->gpc_cookie, - GENFB_BRIGHTNESS_STEP); 828 } 829 830 void 831 genfb_enable_polling(device_t dev) 832 { 833 struct genfb_softc *sc = device_private(dev); 834 835 if (sc->sc_console_screen.scr_vd) { 836 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 837 vcons_hard_switch(&sc->sc_console_screen); 838 vcons_enable_polling(&sc->vd); 839 if (sc->sc_ops.genfb_enable_polling) 840 (*sc->sc_ops.genfb_enable_polling)(sc); 841 } 842 } 843 844 void 845 genfb_disable_polling(device_t dev) 846 { 847 struct genfb_softc *sc = device_private(dev); 848 849 if (sc->sc_console_screen.scr_vd) { 850 if (sc->sc_ops.genfb_disable_polling) 851 (*sc->sc_ops.genfb_disable_polling)(sc); 852 vcons_disable_polling(&sc->vd); 853 } 854 } 855
Indexes created Tue Sep 23 14:10:03 GMT 2025