genfb.c revision 1.67.2.3
1 /* $NetBSD: genfb.c,v 1.67.2.3 2020/07/26 10:47:25 martin 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 1.67.2.3 2020/07/26 10:47:25 martin 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 uint64_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 if (!prop_dictionary_get_uint64(dict, "address", &fboffset)) { 128 GPRINTF("no address property\n"); 129 return; 130 } 131 132 sc->sc_fboffset = (bus_addr_t)fboffset; 133 134 sc->sc_fbaddr = NULL; 135 if (prop_dictionary_get_uint64(dict, "virtual_address", &fbaddr)) { 136 sc->sc_fbaddr = (void *)(uintptr_t)fbaddr; 137 } 138 139 sc->sc_shadowfb = NULL; 140 if (!prop_dictionary_get_bool(dict, "enable_shadowfb", 141 &sc->sc_enable_shadowfb)) 142 #ifdef GENFB_SHADOWFB 143 sc->sc_enable_shadowfb = true; 144 #else 145 sc->sc_enable_shadowfb = false; 146 #endif 147 148 if (!prop_dictionary_get_uint32(dict, "linebytes", &sc->sc_stride)) 149 sc->sc_stride = (sc->sc_width * sc->sc_depth) >> 3; 150 151 /* 152 * deal with a bug in the Raptor firmware which always sets 153 * stride = width even when depth != 8 154 */ 155 if (sc->sc_stride < sc->sc_width * (sc->sc_depth >> 3)) 156 sc->sc_stride = sc->sc_width * (sc->sc_depth >> 3); 157 158 sc->sc_fbsize = sc->sc_height * sc->sc_stride; 159 160 /* optional colour map callback */ 161 sc->sc_cmcb = NULL; 162 if (prop_dictionary_get_uint64(dict, "cmap_callback", &cmap_cb)) { 163 if (cmap_cb != 0) 164 sc->sc_cmcb = (void *)(vaddr_t)cmap_cb; 165 } 166 167 /* optional pmf callback */ 168 sc->sc_pmfcb = NULL; 169 if (prop_dictionary_get_uint64(dict, "pmf_callback", &pmf_cb)) { 170 if (pmf_cb != 0) 171 sc->sc_pmfcb = (void *)(vaddr_t)pmf_cb; 172 } 173 174 /* optional mode callback */ 175 sc->sc_modecb = NULL; 176 if (prop_dictionary_get_uint64(dict, "mode_callback", &mode_cb)) { 177 if (mode_cb != 0) 178 sc->sc_modecb = (void *)(vaddr_t)mode_cb; 179 } 180 181 /* optional backlight control callback */ 182 sc->sc_backlight = NULL; 183 if (prop_dictionary_get_uint64(dict, "backlight_callback", &bl_cb)) { 184 if (bl_cb != 0) { 185 sc->sc_backlight = (void *)(vaddr_t)bl_cb; 186 aprint_naive_dev(sc->sc_dev, 187 "enabling backlight control\n"); 188 } 189 } 190 191 /* optional brightness control callback */ 192 sc->sc_brightness = NULL; 193 if (prop_dictionary_get_uint64(dict, "brightness_callback", &br_cb)) { 194 if (br_cb != 0) { 195 sc->sc_brightness = (void *)(vaddr_t)br_cb; 196 aprint_naive_dev(sc->sc_dev, 197 "enabling brightness control\n"); 198 if (console && 199 sc->sc_brightness->gpc_upd_parameter != NULL) { 200 pmf_event_register(sc->sc_dev, 201 PMFE_DISPLAY_BRIGHTNESS_UP, 202 genfb_brightness_up, TRUE); 203 pmf_event_register(sc->sc_dev, 204 PMFE_DISPLAY_BRIGHTNESS_DOWN, 205 genfb_brightness_down, TRUE); 206 } 207 } 208 } 209 } 210 211 int 212 genfb_attach(struct genfb_softc *sc, struct genfb_ops *ops) 213 { 214 struct wsemuldisplaydev_attach_args aa; 215 prop_dictionary_t dict; 216 struct rasops_info *ri; 217 uint16_t crow; 218 long defattr; 219 bool console; 220 #ifdef SPLASHSCREEN 221 int i, j; 222 int error = ENXIO; 223 #endif 224 225 dict = device_properties(sc->sc_dev); 226 prop_dictionary_get_bool(dict, "is_console", &console); 227 228 if (prop_dictionary_get_uint16(dict, "cursor-row", &crow) == false) 229 crow = 0; 230 if (prop_dictionary_get_bool(dict, "clear-screen", &sc->sc_want_clear) 231 == false) 232 sc->sc_want_clear = true; 233 234 aprint_verbose_dev(sc->sc_dev, "framebuffer at %p, size %dx%d, depth %d, " 235 "stride %d\n", 236 sc->sc_fboffset ? (void *)(intptr_t)sc->sc_fboffset : sc->sc_fbaddr, 237 sc->sc_width, sc->sc_height, sc->sc_depth, sc->sc_stride); 238 239 sc->sc_defaultscreen_descr = (struct wsscreen_descr){ 240 "default", 241 0, 0, 242 NULL, 243 8, 16, 244 WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE | 245 WSSCREEN_RESIZE, 246 NULL 247 }; 248 sc->sc_screens[0] = &sc->sc_defaultscreen_descr; 249 sc->sc_screenlist = (struct wsscreen_list){1, sc->sc_screens}; 250 memcpy(&sc->sc_ops, ops, sizeof(struct genfb_ops)); 251 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 252 if (sc->sc_modecb != NULL) 253 sc->sc_modecb->gmc_setmode(sc, sc->sc_mode); 254 255 sc->sc_accessops.ioctl = genfb_ioctl; 256 sc->sc_accessops.mmap = genfb_mmap; 257 sc->sc_accessops.pollc = genfb_pollc; 258 259 if (sc->sc_enable_shadowfb) { 260 sc->sc_shadowfb = kmem_alloc(sc->sc_fbsize, KM_SLEEP); 261 if (sc->sc_want_clear == false) 262 memcpy(sc->sc_shadowfb, sc->sc_fbaddr, sc->sc_fbsize); 263 aprint_verbose_dev(sc->sc_dev, 264 "shadow framebuffer enabled, size %zu KB\n", 265 sc->sc_fbsize >> 10); 266 } 267 268 vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr, 269 &sc->sc_accessops); 270 sc->vd.init_screen = genfb_init_screen; 271 272 /* Do not print anything between this point and the screen 273 * clear operation below. Otherwise it will be lost. */ 274 275 ri = &sc->sc_console_screen.scr_ri; 276 277 vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, 278 &defattr); 279 sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 280 281 #ifdef SPLASHSCREEN 282 /* 283 * If system isn't going to go multiuser, or user has requested to see 284 * boot text, don't render splash screen immediately 285 */ 286 if (DISABLESPLASH) 287 #endif 288 vcons_redraw_screen(&sc->sc_console_screen); 289 290 sc->sc_defaultscreen_descr.textops = &ri->ri_ops; 291 sc->sc_defaultscreen_descr.capabilities = ri->ri_caps; 292 sc->sc_defaultscreen_descr.nrows = ri->ri_rows; 293 sc->sc_defaultscreen_descr.ncols = ri->ri_cols; 294 295 if (crow >= ri->ri_rows) { 296 crow = 0; 297 sc->sc_want_clear = 1; 298 } 299 300 if (console) 301 wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, crow, 302 defattr); 303 304 /* Clear the whole screen to bring it to a known state. */ 305 if (sc->sc_want_clear) 306 (*ri->ri_ops.eraserows)(ri, 0, ri->ri_rows, defattr); 307 308 #ifdef SPLASHSCREEN 309 j = 0; 310 for (i = 0; i < uimin(1 << sc->sc_depth, 256); i++) { 311 if (i >= SPLASH_CMAP_OFFSET && 312 i < SPLASH_CMAP_OFFSET + SPLASH_CMAP_SIZE) { 313 splash_get_cmap(i, 314 &sc->sc_cmap_red[i], 315 &sc->sc_cmap_green[i], 316 &sc->sc_cmap_blue[i]); 317 } else { 318 sc->sc_cmap_red[i] = rasops_cmap[j]; 319 sc->sc_cmap_green[i] = rasops_cmap[j + 1]; 320 sc->sc_cmap_blue[i] = rasops_cmap[j + 2]; 321 } 322 j += 3; 323 } 324 genfb_restore_palette(sc); 325 326 sc->sc_splash.si_depth = sc->sc_depth; 327 sc->sc_splash.si_bits = sc->sc_console_screen.scr_ri.ri_origbits; 328 sc->sc_splash.si_hwbits = sc->sc_fbaddr; 329 sc->sc_splash.si_width = sc->sc_width; 330 sc->sc_splash.si_height = sc->sc_height; 331 sc->sc_splash.si_stride = sc->sc_stride; 332 sc->sc_splash.si_fillrect = NULL; 333 if (!DISABLESPLASH) { 334 error = splash_render(&sc->sc_splash, 335 SPLASH_F_CENTER|SPLASH_F_FILL); 336 if (error) { 337 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 338 genfb_init_palette(sc); 339 vcons_replay_msgbuf(&sc->sc_console_screen); 340 } 341 } 342 #else 343 genfb_init_palette(sc); 344 if (console) 345 vcons_replay_msgbuf(&sc->sc_console_screen); 346 #endif 347 348 if (genfb_softc == NULL) 349 genfb_softc = sc; 350 351 aa.console = console; 352 aa.scrdata = &sc->sc_screenlist; 353 aa.accessops = &sc->sc_accessops; 354 aa.accesscookie = &sc->vd; 355 356 #ifdef GENFB_DISABLE_TEXT 357 if (!DISABLESPLASH && error == 0) 358 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 359 #endif 360 361 config_found_ia(sc->sc_dev, "wsemuldisplaydev", &aa, 362 wsemuldisplaydevprint); 363 364 return 0; 365 } 366 367 static int 368 genfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 369 struct lwp *l) 370 { 371 struct vcons_data *vd = v; 372 struct genfb_softc *sc = vd->cookie; 373 struct wsdisplay_fbinfo *wdf; 374 struct vcons_screen *ms = vd->active; 375 struct wsdisplay_param *param; 376 int new_mode, error, val, ret; 377 378 switch (cmd) { 379 case WSDISPLAYIO_GINFO: 380 if (ms == NULL) 381 return ENODEV; 382 wdf = (void *)data; 383 wdf->height = ms->scr_ri.ri_height; 384 wdf->width = ms->scr_ri.ri_width; 385 wdf->depth = ms->scr_ri.ri_depth; 386 wdf->cmsize = 256; 387 return 0; 388 389 case WSDISPLAYIO_GETCMAP: 390 return genfb_getcmap(sc, 391 (struct wsdisplay_cmap *)data); 392 393 case WSDISPLAYIO_PUTCMAP: 394 return genfb_putcmap(sc, 395 (struct wsdisplay_cmap *)data); 396 397 case WSDISPLAYIO_LINEBYTES: 398 *(u_int *)data = sc->sc_stride; 399 return 0; 400 401 case WSDISPLAYIO_SMODE: 402 new_mode = *(int *)data; 403 404 /* notify the bus backend */ 405 error = 0; 406 if (sc->sc_ops.genfb_ioctl) 407 error = sc->sc_ops.genfb_ioctl(sc, vs, 408 cmd, data, flag, l); 409 if (error && error != EPASSTHROUGH) 410 return error; 411 412 if (new_mode != sc->sc_mode) { 413 sc->sc_mode = new_mode; 414 if (sc->sc_modecb != NULL) 415 sc->sc_modecb->gmc_setmode(sc, 416 sc->sc_mode); 417 if (new_mode == WSDISPLAYIO_MODE_EMUL) { 418 genfb_restore_palette(sc); 419 vcons_redraw_screen(ms); 420 } 421 } 422 return 0; 423 424 case WSDISPLAYIO_SSPLASH: 425 #if defined(SPLASHSCREEN) 426 if(*(int *)data == 1) { 427 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 428 splash_render(&sc->sc_splash, 429 SPLASH_F_CENTER|SPLASH_F_FILL); 430 } else { 431 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 432 genfb_init_palette(sc); 433 } 434 vcons_redraw_screen(ms); 435 return 0; 436 #else 437 return ENODEV; 438 #endif 439 case WSDISPLAYIO_GETPARAM: 440 param = (struct wsdisplay_param *)data; 441 switch (param->param) { 442 case WSDISPLAYIO_PARAM_BRIGHTNESS: 443 if (sc->sc_brightness == NULL) 444 return EPASSTHROUGH; 445 param->min = 0; 446 param->max = 255; 447 return sc->sc_brightness->gpc_get_parameter( 448 sc->sc_brightness->gpc_cookie, 449 ¶m->curval); 450 case WSDISPLAYIO_PARAM_BACKLIGHT: 451 if (sc->sc_backlight == NULL) 452 return EPASSTHROUGH; 453 param->min = 0; 454 param->max = 1; 455 return sc->sc_backlight->gpc_get_parameter( 456 sc->sc_backlight->gpc_cookie, 457 ¶m->curval); 458 } 459 return EPASSTHROUGH; 460 461 case WSDISPLAYIO_SETPARAM: 462 param = (struct wsdisplay_param *)data; 463 switch (param->param) { 464 case WSDISPLAYIO_PARAM_BRIGHTNESS: 465 if (sc->sc_brightness == NULL) 466 return EPASSTHROUGH; 467 val = param->curval; 468 if (val < 0) val = 0; 469 if (val > 255) val = 255; 470 return sc->sc_brightness->gpc_set_parameter( 471 sc->sc_brightness->gpc_cookie, val); 472 case WSDISPLAYIO_PARAM_BACKLIGHT: 473 if (sc->sc_backlight == NULL) 474 return EPASSTHROUGH; 475 val = param->curval; 476 if (val < 0) val = 0; 477 if (val > 1) val = 1; 478 return sc->sc_backlight->gpc_set_parameter( 479 sc->sc_backlight->gpc_cookie, val); 480 } 481 return EPASSTHROUGH; 482 } 483 ret = EPASSTHROUGH; 484 if (sc->sc_ops.genfb_ioctl) 485 ret = sc->sc_ops.genfb_ioctl(sc, vs, cmd, data, flag, l); 486 if (ret != EPASSTHROUGH) 487 return ret; 488 /* 489 * XXX 490 * handle these only if there either is no ioctl() handler or it didn't 491 * know how to deal with them. This allows bus frontends to override 492 * them but still provides fallback implementations 493 */ 494 switch (cmd) { 495 case WSDISPLAYIO_GET_EDID: { 496 497 struct wsdisplayio_edid_info *d = data; 498 return wsdisplayio_get_edid(sc->sc_dev, d); 499 } 500 501 case WSDISPLAYIO_GET_FBINFO: { 502 struct wsdisplayio_fbinfo *fbi = data; 503 return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); 504 } 505 } 506 return EPASSTHROUGH; 507 } 508 509 static paddr_t 510 genfb_mmap(void *v, void *vs, off_t offset, int prot) 511 { 512 struct vcons_data *vd = v; 513 struct genfb_softc *sc = vd->cookie; 514 515 if (sc->sc_ops.genfb_mmap) 516 return sc->sc_ops.genfb_mmap(sc, vs, offset, prot); 517 518 return -1; 519 } 520 521 static void 522 genfb_pollc(void *v, int on) 523 { 524 struct vcons_data *vd = v; 525 struct genfb_softc *sc = vd->cookie; 526 527 if (sc == NULL) 528 return; 529 530 if (on) 531 genfb_enable_polling(sc->sc_dev); 532 else 533 genfb_disable_polling(sc->sc_dev); 534 } 535 536 static void 537 genfb_init_screen(void *cookie, struct vcons_screen *scr, 538 int existing, long *defattr) 539 { 540 struct genfb_softc *sc = cookie; 541 struct rasops_info *ri = &scr->scr_ri; 542 int wantcols; 543 bool is_bgr; 544 545 ri->ri_depth = sc->sc_depth; 546 ri->ri_width = sc->sc_width; 547 ri->ri_height = sc->sc_height; 548 ri->ri_stride = sc->sc_stride; 549 ri->ri_flg = RI_CENTER; 550 if (sc->sc_want_clear) 551 ri->ri_flg |= RI_FULLCLEAR; 552 553 scr->scr_flags |= VCONS_LOADFONT; 554 555 if (sc->sc_shadowfb != NULL) { 556 ri->ri_hwbits = (char *)sc->sc_fbaddr; 557 ri->ri_bits = (char *)sc->sc_shadowfb; 558 } else { 559 ri->ri_bits = (char *)sc->sc_fbaddr; 560 scr->scr_flags |= VCONS_DONT_READ; 561 } 562 563 if (existing && sc->sc_want_clear) 564 ri->ri_flg |= RI_CLEAR; 565 566 switch (ri->ri_depth) { 567 case 32: 568 case 24: 569 ri->ri_flg |= RI_ENABLE_ALPHA; 570 571 is_bgr = false; 572 prop_dictionary_get_bool(device_properties(sc->sc_dev), 573 "is_bgr", &is_bgr); 574 if (is_bgr) { 575 /* someone requested BGR */ 576 ri->ri_rnum = 8; 577 ri->ri_gnum = 8; 578 ri->ri_bnum = 8; 579 ri->ri_rpos = 0; 580 ri->ri_gpos = 8; 581 ri->ri_bpos = 16; 582 } else { 583 /* assume RGB */ 584 ri->ri_rnum = 8; 585 ri->ri_gnum = 8; 586 ri->ri_bnum = 8; 587 ri->ri_rpos = 16; 588 ri->ri_gpos = 8; 589 ri->ri_bpos = 0; 590 } 591 break; 592 593 case 16: 594 case 15: 595 ri->ri_flg |= RI_ENABLE_ALPHA; 596 break; 597 598 case 8: 599 if (sc->sc_cmcb != NULL) 600 ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB; 601 break; 602 603 case 2: 604 ri->ri_flg |= RI_ENABLE_ALPHA; 605 break; 606 607 default: 608 break; 609 } 610 611 wantcols = genfb_calc_cols(sc); 612 613 rasops_init(ri, 0, wantcols); 614 ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE | 615 WSSCREEN_RESIZE; 616 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 617 sc->sc_width / ri->ri_font->fontwidth); 618 619 /* TODO: actually center output */ 620 ri->ri_hw = scr; 621 622 #ifdef GENFB_DISABLE_TEXT 623 if (scr == &sc->sc_console_screen && !DISABLESPLASH) 624 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 625 #endif 626 } 627 628 /* Returns the width of the display in millimeters, or 0 if not known. */ 629 static int 630 genfb_calc_hsize(struct genfb_softc *sc) 631 { 632 device_t dev = sc->sc_dev; 633 prop_dictionary_t dict = device_properties(dev); 634 prop_data_t edid_data; 635 struct edid_info *edid; 636 const char *edid_ptr; 637 int hsize; 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 = kmem_alloc(sizeof(*edid), KM_SLEEP); 644 645 edid_ptr = prop_data_data_nocopy(edid_data); 646 if (edid_parse(__UNCONST(edid_ptr), edid) == 0) 647 hsize = (int)edid->edid_max_hsize * 10; 648 else 649 hsize = 0; 650 651 kmem_free(edid, sizeof(*edid)); 652 653 return hsize; 654 } 655 656 /* Return the minimum number of character columns based on DPI */ 657 static int 658 genfb_calc_cols(struct genfb_softc *sc) 659 { 660 const int hsize = genfb_calc_hsize(sc); 661 662 return MAX(RASOPS_DEFAULT_WIDTH, hsize / GENFB_CHAR_WIDTH_MM); 663 } 664 665 static int 666 genfb_putcmap(struct genfb_softc *sc, struct wsdisplay_cmap *cm) 667 { 668 u_char *r, *g, *b; 669 u_int index = cm->index; 670 u_int count = cm->count; 671 int i, error; 672 u_char rbuf[256], gbuf[256], bbuf[256]; 673 674 #ifdef GENFB_DEBUG 675 aprint_debug("putcmap: %d %d\n",index, count); 676 #endif 677 if (index >= 256 || count > 256 || index + count > 256) 678 return EINVAL; 679 680 error = copyin(cm->red, &rbuf[index], count); 681 if (error) 682 return error; 683 error = copyin(cm->green, &gbuf[index], count); 684 if (error) 685 return error; 686 error = copyin(cm->blue, &bbuf[index], count); 687 if (error) 688 return error; 689 690 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 691 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 692 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 693 694 r = &sc->sc_cmap_red[index]; 695 g = &sc->sc_cmap_green[index]; 696 b = &sc->sc_cmap_blue[index]; 697 698 for (i = 0; i < count; i++) { 699 genfb_putpalreg(sc, index, *r, *g, *b); 700 index++; 701 r++, g++, b++; 702 } 703 return 0; 704 } 705 706 static int 707 genfb_getcmap(struct genfb_softc *sc, struct wsdisplay_cmap *cm) 708 { 709 u_int index = cm->index; 710 u_int count = cm->count; 711 int error; 712 713 if (index >= 256 || count > 256 || index + count > 256) 714 return EINVAL; 715 716 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 717 if (error) 718 return error; 719 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 720 if (error) 721 return error; 722 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 723 if (error) 724 return error; 725 726 return 0; 727 } 728 729 void 730 genfb_restore_palette(struct genfb_softc *sc) 731 { 732 int i; 733 734 if (sc->sc_depth <= 8) { 735 for (i = 0; i < (1 << sc->sc_depth); i++) { 736 genfb_putpalreg(sc, i, sc->sc_cmap_red[i], 737 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 738 } 739 } 740 } 741 742 static void 743 genfb_init_palette(struct genfb_softc *sc) 744 { 745 int i, j, tmp; 746 747 if (sc->sc_depth == 8) { 748 /* generate an r3g3b2 colour map */ 749 for (i = 0; i < 256; i++) { 750 tmp = i & 0xe0; 751 /* 752 * replicate bits so 0xe0 maps to a red value of 0xff 753 * in order to make white look actually white 754 */ 755 tmp |= (tmp >> 3) | (tmp >> 6); 756 sc->sc_cmap_red[i] = tmp; 757 758 tmp = (i & 0x1c) << 3; 759 tmp |= (tmp >> 3) | (tmp >> 6); 760 sc->sc_cmap_green[i] = tmp; 761 762 tmp = (i & 0x03) << 6; 763 tmp |= tmp >> 2; 764 tmp |= tmp >> 4; 765 sc->sc_cmap_blue[i] = tmp; 766 767 genfb_putpalreg(sc, i, sc->sc_cmap_red[i], 768 sc->sc_cmap_green[i], 769 sc->sc_cmap_blue[i]); 770 } 771 } else { 772 /* steal rasops' ANSI cmap */ 773 j = 0; 774 for (i = 0; i < 256; i++) { 775 sc->sc_cmap_red[i] = rasops_cmap[j]; 776 sc->sc_cmap_green[i] = rasops_cmap[j + 1]; 777 sc->sc_cmap_blue[i] = rasops_cmap[j + 2]; 778 j += 3; 779 } 780 } 781 } 782 783 static int 784 genfb_putpalreg(struct genfb_softc *sc, uint8_t idx, uint8_t r, uint8_t g, 785 uint8_t b) 786 { 787 788 if (sc->sc_cmcb) { 789 790 sc->sc_cmcb->gcc_set_mapreg(sc->sc_cmcb->gcc_cookie, 791 idx, r, g, b); 792 } 793 return 0; 794 } 795 796 void 797 genfb_cnattach(void) 798 { 799 genfb_cnattach_called = 1; 800 } 801 802 void 803 genfb_disable(void) 804 { 805 genfb_enabled = 0; 806 } 807 808 int 809 genfb_is_console(void) 810 { 811 return genfb_cnattach_called; 812 } 813 814 int 815 genfb_is_enabled(void) 816 { 817 return genfb_enabled; 818 } 819 820 int 821 genfb_borrow(bus_addr_t addr, bus_space_handle_t *hdlp) 822 { 823 struct genfb_softc *sc = genfb_softc; 824 825 if (sc && sc->sc_ops.genfb_borrow) 826 return sc->sc_ops.genfb_borrow(sc, addr, hdlp); 827 return 0; 828 } 829 830 static void 831 genfb_brightness_up(device_t dev) 832 { 833 struct genfb_softc *sc = device_private(dev); 834 835 KASSERT(sc->sc_brightness != NULL && 836 sc->sc_brightness->gpc_upd_parameter != NULL); 837 838 (void)sc->sc_brightness->gpc_upd_parameter( 839 sc->sc_brightness->gpc_cookie, GENFB_BRIGHTNESS_STEP); 840 } 841 842 static void 843 genfb_brightness_down(device_t dev) 844 { 845 struct genfb_softc *sc = device_private(dev); 846 847 KASSERT(sc->sc_brightness != NULL && 848 sc->sc_brightness->gpc_upd_parameter != NULL); 849 850 (void)sc->sc_brightness->gpc_upd_parameter( 851 sc->sc_brightness->gpc_cookie, - GENFB_BRIGHTNESS_STEP); 852 } 853 854 void 855 genfb_enable_polling(device_t dev) 856 { 857 struct genfb_softc *sc = device_private(dev); 858 859 if (sc->sc_console_screen.scr_vd) { 860 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 861 vcons_hard_switch(&sc->sc_console_screen); 862 vcons_enable_polling(&sc->vd); 863 if (sc->sc_ops.genfb_enable_polling) 864 (*sc->sc_ops.genfb_enable_polling)(sc); 865 } 866 } 867 868 void 869 genfb_disable_polling(device_t dev) 870 { 871 struct genfb_softc *sc = device_private(dev); 872 873 if (sc->sc_console_screen.scr_vd) { 874 if (sc->sc_ops.genfb_disable_polling) 875 (*sc->sc_ops.genfb_disable_polling)(sc); 876 vcons_disable_polling(&sc->vd); 877 } 878 } 879
Indexes created Sun Oct 19 02:09:48 GMT 2025