genfb.c revision 1.70
1 /* $NetBSD: genfb.c,v 1.70 2019/08/09 17:22:02 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 1.70 2019/08/09 17:22:02 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 aprint_verbose_dev(sc->sc_dev, 265 "shadow framebuffer enabled, size %zu KB\n", 266 sc->sc_fbsize >> 10); 267 } 268 269 vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr, 270 &sc->sc_accessops); 271 sc->vd.init_screen = genfb_init_screen; 272 273 /* Do not print anything between this point and the screen 274 * clear operation below. Otherwise it will be lost. */ 275 276 ri = &sc->sc_console_screen.scr_ri; 277 278 vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, 279 &defattr); 280 sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 281 282 #ifdef SPLASHSCREEN 283 /* 284 * If system isn't going to go multiuser, or user has requested to see 285 * boot text, don't render splash screen immediately 286 */ 287 if (DISABLESPLASH) 288 #endif 289 vcons_redraw_screen(&sc->sc_console_screen); 290 291 sc->sc_defaultscreen_descr.textops = &ri->ri_ops; 292 sc->sc_defaultscreen_descr.capabilities = ri->ri_caps; 293 sc->sc_defaultscreen_descr.nrows = ri->ri_rows; 294 sc->sc_defaultscreen_descr.ncols = ri->ri_cols; 295 296 if (crow >= ri->ri_rows) { 297 crow = 0; 298 sc->sc_want_clear = 1; 299 } 300 301 if (console) 302 wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, crow, 303 defattr); 304 305 /* Clear the whole screen to bring it to a known state. */ 306 if (sc->sc_want_clear) 307 (*ri->ri_ops.eraserows)(ri, 0, ri->ri_rows, defattr); 308 309 #ifdef SPLASHSCREEN 310 j = 0; 311 for (i = 0; i < uimin(1 << sc->sc_depth, 256); i++) { 312 if (i >= SPLASH_CMAP_OFFSET && 313 i < SPLASH_CMAP_OFFSET + SPLASH_CMAP_SIZE) { 314 splash_get_cmap(i, 315 &sc->sc_cmap_red[i], 316 &sc->sc_cmap_green[i], 317 &sc->sc_cmap_blue[i]); 318 } else { 319 sc->sc_cmap_red[i] = rasops_cmap[j]; 320 sc->sc_cmap_green[i] = rasops_cmap[j + 1]; 321 sc->sc_cmap_blue[i] = rasops_cmap[j + 2]; 322 } 323 j += 3; 324 } 325 genfb_restore_palette(sc); 326 327 sc->sc_splash.si_depth = sc->sc_depth; 328 sc->sc_splash.si_bits = sc->sc_console_screen.scr_ri.ri_origbits; 329 sc->sc_splash.si_hwbits = sc->sc_fbaddr; 330 sc->sc_splash.si_width = sc->sc_width; 331 sc->sc_splash.si_height = sc->sc_height; 332 sc->sc_splash.si_stride = sc->sc_stride; 333 sc->sc_splash.si_fillrect = NULL; 334 if (!DISABLESPLASH) { 335 error = splash_render(&sc->sc_splash, 336 SPLASH_F_CENTER|SPLASH_F_FILL); 337 if (error) { 338 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 339 genfb_init_palette(sc); 340 vcons_replay_msgbuf(&sc->sc_console_screen); 341 } 342 } 343 #else 344 genfb_init_palette(sc); 345 if (console) 346 vcons_replay_msgbuf(&sc->sc_console_screen); 347 #endif 348 349 if (genfb_softc == NULL) 350 genfb_softc = sc; 351 352 aa.console = console; 353 aa.scrdata = &sc->sc_screenlist; 354 aa.accessops = &sc->sc_accessops; 355 aa.accesscookie = &sc->vd; 356 357 #ifdef GENFB_DISABLE_TEXT 358 if (!DISABLESPLASH && error == 0) 359 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 360 #endif 361 362 config_found_ia(sc->sc_dev, "wsemuldisplaydev", &aa, 363 wsemuldisplaydevprint); 364 365 return 0; 366 } 367 368 static int 369 genfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 370 struct lwp *l) 371 { 372 struct vcons_data *vd = v; 373 struct genfb_softc *sc = vd->cookie; 374 struct wsdisplay_fbinfo *wdf; 375 struct vcons_screen *ms = vd->active; 376 struct wsdisplay_param *param; 377 int new_mode, error, val, ret; 378 379 switch (cmd) { 380 case WSDISPLAYIO_GINFO: 381 if (ms == NULL) 382 return ENODEV; 383 wdf = (void *)data; 384 wdf->height = ms->scr_ri.ri_height; 385 wdf->width = ms->scr_ri.ri_width; 386 wdf->depth = ms->scr_ri.ri_depth; 387 wdf->cmsize = 256; 388 return 0; 389 390 case WSDISPLAYIO_GETCMAP: 391 return genfb_getcmap(sc, 392 (struct wsdisplay_cmap *)data); 393 394 case WSDISPLAYIO_PUTCMAP: 395 return genfb_putcmap(sc, 396 (struct wsdisplay_cmap *)data); 397 398 case WSDISPLAYIO_LINEBYTES: 399 *(u_int *)data = sc->sc_stride; 400 return 0; 401 402 case WSDISPLAYIO_SMODE: 403 new_mode = *(int *)data; 404 405 /* notify the bus backend */ 406 error = 0; 407 if (sc->sc_ops.genfb_ioctl) 408 error = sc->sc_ops.genfb_ioctl(sc, vs, 409 cmd, data, flag, l); 410 if (error && error != EPASSTHROUGH) 411 return error; 412 413 if (new_mode != sc->sc_mode) { 414 sc->sc_mode = new_mode; 415 if (sc->sc_modecb != NULL) 416 sc->sc_modecb->gmc_setmode(sc, 417 sc->sc_mode); 418 if (new_mode == WSDISPLAYIO_MODE_EMUL) { 419 genfb_restore_palette(sc); 420 vcons_redraw_screen(ms); 421 } 422 } 423 return 0; 424 425 case WSDISPLAYIO_SSPLASH: 426 #if defined(SPLASHSCREEN) 427 if(*(int *)data == 1) { 428 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 429 splash_render(&sc->sc_splash, 430 SPLASH_F_CENTER|SPLASH_F_FILL); 431 } else { 432 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 433 genfb_init_palette(sc); 434 } 435 vcons_redraw_screen(ms); 436 return 0; 437 #else 438 return ENODEV; 439 #endif 440 case WSDISPLAYIO_GETPARAM: 441 param = (struct wsdisplay_param *)data; 442 switch (param->param) { 443 case WSDISPLAYIO_PARAM_BRIGHTNESS: 444 if (sc->sc_brightness == NULL) 445 return EPASSTHROUGH; 446 param->min = 0; 447 param->max = 255; 448 return sc->sc_brightness->gpc_get_parameter( 449 sc->sc_brightness->gpc_cookie, 450 ¶m->curval); 451 case WSDISPLAYIO_PARAM_BACKLIGHT: 452 if (sc->sc_backlight == NULL) 453 return EPASSTHROUGH; 454 param->min = 0; 455 param->max = 1; 456 return sc->sc_backlight->gpc_get_parameter( 457 sc->sc_backlight->gpc_cookie, 458 ¶m->curval); 459 } 460 return EPASSTHROUGH; 461 462 case WSDISPLAYIO_SETPARAM: 463 param = (struct wsdisplay_param *)data; 464 switch (param->param) { 465 case WSDISPLAYIO_PARAM_BRIGHTNESS: 466 if (sc->sc_brightness == NULL) 467 return EPASSTHROUGH; 468 val = param->curval; 469 if (val < 0) val = 0; 470 if (val > 255) val = 255; 471 return sc->sc_brightness->gpc_set_parameter( 472 sc->sc_brightness->gpc_cookie, val); 473 case WSDISPLAYIO_PARAM_BACKLIGHT: 474 if (sc->sc_backlight == NULL) 475 return EPASSTHROUGH; 476 val = param->curval; 477 if (val < 0) val = 0; 478 if (val > 1) val = 1; 479 return sc->sc_backlight->gpc_set_parameter( 480 sc->sc_backlight->gpc_cookie, val); 481 } 482 return EPASSTHROUGH; 483 } 484 ret = EPASSTHROUGH; 485 if (sc->sc_ops.genfb_ioctl) 486 ret = sc->sc_ops.genfb_ioctl(sc, vs, cmd, data, flag, l); 487 if (ret != EPASSTHROUGH) 488 return ret; 489 /* 490 * XXX 491 * handle these only if there either is no ioctl() handler or it didn't 492 * know how to deal with them. This allows bus frontends to override 493 * them but still provides fallback implementations 494 */ 495 switch (cmd) { 496 case WSDISPLAYIO_GET_EDID: { 497 498 struct wsdisplayio_edid_info *d = data; 499 return wsdisplayio_get_edid(sc->sc_dev, d); 500 } 501 502 case WSDISPLAYIO_GET_FBINFO: { 503 struct wsdisplayio_fbinfo *fbi = data; 504 return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); 505 } 506 } 507 return EPASSTHROUGH; 508 } 509 510 static paddr_t 511 genfb_mmap(void *v, void *vs, off_t offset, int prot) 512 { 513 struct vcons_data *vd = v; 514 struct genfb_softc *sc = vd->cookie; 515 516 if (sc->sc_ops.genfb_mmap) 517 return sc->sc_ops.genfb_mmap(sc, vs, offset, prot); 518 519 return -1; 520 } 521 522 static void 523 genfb_pollc(void *v, int on) 524 { 525 struct vcons_data *vd = v; 526 struct genfb_softc *sc = vd->cookie; 527 528 if (sc == NULL) 529 return; 530 531 if (on) 532 genfb_enable_polling(sc->sc_dev); 533 else 534 genfb_disable_polling(sc->sc_dev); 535 } 536 537 static void 538 genfb_init_screen(void *cookie, struct vcons_screen *scr, 539 int existing, long *defattr) 540 { 541 struct genfb_softc *sc = cookie; 542 struct rasops_info *ri = &scr->scr_ri; 543 int wantcols; 544 bool is_bgr; 545 546 ri->ri_depth = sc->sc_depth; 547 ri->ri_width = sc->sc_width; 548 ri->ri_height = sc->sc_height; 549 ri->ri_stride = sc->sc_stride; 550 ri->ri_flg = RI_CENTER; 551 if (sc->sc_want_clear) 552 ri->ri_flg |= RI_FULLCLEAR; 553 554 scr->scr_flags |= VCONS_LOADFONT; 555 556 if (sc->sc_shadowfb != NULL) { 557 ri->ri_hwbits = (char *)sc->sc_fbaddr; 558 ri->ri_bits = (char *)sc->sc_shadowfb; 559 } else { 560 ri->ri_bits = (char *)sc->sc_fbaddr; 561 scr->scr_flags |= VCONS_DONT_READ; 562 } 563 564 if (existing && sc->sc_want_clear) 565 ri->ri_flg |= RI_CLEAR; 566 567 switch (ri->ri_depth) { 568 case 32: 569 case 24: 570 ri->ri_flg |= RI_ENABLE_ALPHA; 571 572 is_bgr = false; 573 prop_dictionary_get_bool(device_properties(sc->sc_dev), 574 "is_bgr", &is_bgr); 575 if (is_bgr) { 576 /* someone requested BGR */ 577 ri->ri_rnum = 8; 578 ri->ri_gnum = 8; 579 ri->ri_bnum = 8; 580 ri->ri_rpos = 0; 581 ri->ri_gpos = 8; 582 ri->ri_bpos = 16; 583 } else { 584 /* assume RGB */ 585 ri->ri_rnum = 8; 586 ri->ri_gnum = 8; 587 ri->ri_bnum = 8; 588 ri->ri_rpos = 16; 589 ri->ri_gpos = 8; 590 ri->ri_bpos = 0; 591 } 592 break; 593 594 case 16: 595 case 15: 596 ri->ri_flg |= RI_ENABLE_ALPHA; 597 break; 598 599 case 8: 600 if (sc->sc_cmcb != NULL) 601 ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB; 602 break; 603 604 case 2: 605 ri->ri_flg |= RI_ENABLE_ALPHA; 606 break; 607 608 default: 609 break; 610 } 611 612 wantcols = genfb_calc_cols(sc); 613 614 rasops_init(ri, 0, wantcols); 615 ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE | 616 WSSCREEN_RESIZE; 617 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 618 sc->sc_width / ri->ri_font->fontwidth); 619 620 /* TODO: actually center output */ 621 ri->ri_hw = scr; 622 623 #ifdef GENFB_DISABLE_TEXT 624 if (scr == &sc->sc_console_screen && !DISABLESPLASH) 625 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 626 #endif 627 } 628 629 /* Returns the width of the display in millimeters, or 0 if not known. */ 630 static int 631 genfb_calc_hsize(struct genfb_softc *sc) 632 { 633 device_t dev = sc->sc_dev; 634 prop_dictionary_t dict = device_properties(dev); 635 prop_data_t edid_data; 636 struct edid_info edid; 637 const char *edid_ptr; 638 639 edid_data = prop_dictionary_get(dict, "EDID"); 640 if (edid_data == NULL || prop_data_size(edid_data) < 128) 641 return 0; 642 643 edid_ptr = prop_data_data_nocopy(edid_data); 644 if (edid_parse(__UNCONST(edid_ptr), &edid) != 0) 645 return 0; 646 647 return (int)edid.edid_max_hsize * 10; 648 } 649 650 /* Return the minimum number of character columns based on DPI */ 651 static int 652 genfb_calc_cols(struct genfb_softc *sc) 653 { 654 const int hsize = genfb_calc_hsize(sc); 655 656 return MAX(RASOPS_DEFAULT_WIDTH, hsize / GENFB_CHAR_WIDTH_MM); 657 } 658 659 static int 660 genfb_putcmap(struct genfb_softc *sc, struct wsdisplay_cmap *cm) 661 { 662 u_char *r, *g, *b; 663 u_int index = cm->index; 664 u_int count = cm->count; 665 int i, error; 666 u_char rbuf[256], gbuf[256], bbuf[256]; 667 668 #ifdef GENFB_DEBUG 669 aprint_debug("putcmap: %d %d\n",index, count); 670 #endif 671 if (index >= 256 || count > 256 || index + count > 256) 672 return EINVAL; 673 674 error = copyin(cm->red, &rbuf[index], count); 675 if (error) 676 return error; 677 error = copyin(cm->green, &gbuf[index], count); 678 if (error) 679 return error; 680 error = copyin(cm->blue, &bbuf[index], count); 681 if (error) 682 return error; 683 684 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 685 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 686 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 687 688 r = &sc->sc_cmap_red[index]; 689 g = &sc->sc_cmap_green[index]; 690 b = &sc->sc_cmap_blue[index]; 691 692 for (i = 0; i < count; i++) { 693 genfb_putpalreg(sc, index, *r, *g, *b); 694 index++; 695 r++, g++, b++; 696 } 697 return 0; 698 } 699 700 static int 701 genfb_getcmap(struct genfb_softc *sc, struct wsdisplay_cmap *cm) 702 { 703 u_int index = cm->index; 704 u_int count = cm->count; 705 int error; 706 707 if (index >= 256 || count > 256 || index + count > 256) 708 return EINVAL; 709 710 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 711 if (error) 712 return error; 713 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 714 if (error) 715 return error; 716 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 717 if (error) 718 return error; 719 720 return 0; 721 } 722 723 void 724 genfb_restore_palette(struct genfb_softc *sc) 725 { 726 int i; 727 728 if (sc->sc_depth <= 8) { 729 for (i = 0; i < (1 << sc->sc_depth); i++) { 730 genfb_putpalreg(sc, i, sc->sc_cmap_red[i], 731 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 732 } 733 } 734 } 735 736 static void 737 genfb_init_palette(struct genfb_softc *sc) 738 { 739 int i, j, tmp; 740 741 if (sc->sc_depth == 8) { 742 /* generate an r3g3b2 colour map */ 743 for (i = 0; i < 256; i++) { 744 tmp = i & 0xe0; 745 /* 746 * replicate bits so 0xe0 maps to a red value of 0xff 747 * in order to make white look actually white 748 */ 749 tmp |= (tmp >> 3) | (tmp >> 6); 750 sc->sc_cmap_red[i] = tmp; 751 752 tmp = (i & 0x1c) << 3; 753 tmp |= (tmp >> 3) | (tmp >> 6); 754 sc->sc_cmap_green[i] = tmp; 755 756 tmp = (i & 0x03) << 6; 757 tmp |= tmp >> 2; 758 tmp |= tmp >> 4; 759 sc->sc_cmap_blue[i] = tmp; 760 761 genfb_putpalreg(sc, i, sc->sc_cmap_red[i], 762 sc->sc_cmap_green[i], 763 sc->sc_cmap_blue[i]); 764 } 765 } else { 766 /* steal rasops' ANSI cmap */ 767 j = 0; 768 for (i = 0; i < 256; i++) { 769 sc->sc_cmap_red[i] = rasops_cmap[j]; 770 sc->sc_cmap_green[i] = rasops_cmap[j + 1]; 771 sc->sc_cmap_blue[i] = rasops_cmap[j + 2]; 772 j += 3; 773 } 774 } 775 } 776 777 static int 778 genfb_putpalreg(struct genfb_softc *sc, uint8_t idx, uint8_t r, uint8_t g, 779 uint8_t b) 780 { 781 782 if (sc->sc_cmcb) { 783 784 sc->sc_cmcb->gcc_set_mapreg(sc->sc_cmcb->gcc_cookie, 785 idx, r, g, b); 786 } 787 return 0; 788 } 789 790 void 791 genfb_cnattach(void) 792 { 793 genfb_cnattach_called = 1; 794 } 795 796 void 797 genfb_disable(void) 798 { 799 genfb_enabled = 0; 800 } 801 802 int 803 genfb_is_console(void) 804 { 805 return genfb_cnattach_called; 806 } 807 808 int 809 genfb_is_enabled(void) 810 { 811 return genfb_enabled; 812 } 813 814 int 815 genfb_borrow(bus_addr_t addr, bus_space_handle_t *hdlp) 816 { 817 struct genfb_softc *sc = genfb_softc; 818 819 if (sc && sc->sc_ops.genfb_borrow) 820 return sc->sc_ops.genfb_borrow(sc, addr, hdlp); 821 return 0; 822 } 823 824 static void 825 genfb_brightness_up(device_t dev) 826 { 827 struct genfb_softc *sc = device_private(dev); 828 829 KASSERT(sc->sc_brightness != NULL && 830 sc->sc_brightness->gpc_upd_parameter != NULL); 831 832 (void)sc->sc_brightness->gpc_upd_parameter( 833 sc->sc_brightness->gpc_cookie, GENFB_BRIGHTNESS_STEP); 834 } 835 836 static void 837 genfb_brightness_down(device_t dev) 838 { 839 struct genfb_softc *sc = device_private(dev); 840 841 KASSERT(sc->sc_brightness != NULL && 842 sc->sc_brightness->gpc_upd_parameter != NULL); 843 844 (void)sc->sc_brightness->gpc_upd_parameter( 845 sc->sc_brightness->gpc_cookie, - GENFB_BRIGHTNESS_STEP); 846 } 847 848 void 849 genfb_enable_polling(device_t dev) 850 { 851 struct genfb_softc *sc = device_private(dev); 852 853 if (sc->sc_console_screen.scr_vd) { 854 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 855 vcons_hard_switch(&sc->sc_console_screen); 856 vcons_enable_polling(&sc->vd); 857 if (sc->sc_ops.genfb_enable_polling) 858 (*sc->sc_ops.genfb_enable_polling)(sc); 859 } 860 } 861 862 void 863 genfb_disable_polling(device_t dev) 864 { 865 struct genfb_softc *sc = device_private(dev); 866 867 if (sc->sc_console_screen.scr_vd) { 868 if (sc->sc_ops.genfb_disable_polling) 869 (*sc->sc_ops.genfb_disable_polling)(sc); 870 vcons_disable_polling(&sc->vd); 871 } 872 } 873
Indexes created Tue Sep 23 07:09:52 GMT 2025