genfb.c revision 1.58.2.1
1 /* $NetBSD: genfb.c,v 1.58.2.1 2017/03/20 06:57:39 pgoyette 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 1.58.2.1 2017/03/20 06:57:39 pgoyette 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 #ifdef GENFB_DISABLE_TEXT 53 #include <sys/reboot.h> 54 #define DISABLESPLASH (boothowto & (RB_SINGLE | RB_USERCONF | RB_ASKNAME | \ 55 AB_VERBOSE | AB_DEBUG) ) 56 #endif 57 58 #ifdef _KERNEL_OPT 59 #include "opt_genfb.h" 60 #include "opt_wsfb.h" 61 #endif 62 63 #ifdef GENFB_DEBUG 64 #define GPRINTF panic 65 #else 66 #define GPRINTF aprint_debug 67 #endif 68 69 #define GENFB_BRIGHTNESS_STEP 15 70 71 static int genfb_ioctl(void *, void *, u_long, void *, int, struct lwp *); 72 static paddr_t genfb_mmap(void *, void *, off_t, int); 73 static void genfb_pollc(void *, int); 74 75 static void genfb_init_screen(void *, struct vcons_screen *, int, long *); 76 77 static int genfb_putcmap(struct genfb_softc *, struct wsdisplay_cmap *); 78 static int genfb_getcmap(struct genfb_softc *, struct wsdisplay_cmap *); 79 static int genfb_putpalreg(struct genfb_softc *, uint8_t, uint8_t, 80 uint8_t, uint8_t); 81 static void genfb_init_palette(struct genfb_softc *); 82 83 static void genfb_brightness_up(device_t); 84 static void genfb_brightness_down(device_t); 85 86 extern const u_char rasops_cmap[768]; 87 88 static int genfb_cnattach_called = 0; 89 static int genfb_enabled = 1; 90 91 static struct genfb_softc *genfb_softc = NULL; 92 93 void 94 genfb_init(struct genfb_softc *sc) 95 { 96 prop_dictionary_t dict; 97 uint64_t cmap_cb, pmf_cb, mode_cb, bl_cb, br_cb, fbaddr; 98 uint32_t fboffset; 99 bool console; 100 101 dict = device_properties(sc->sc_dev); 102 #ifdef GENFB_DEBUG 103 printf("%s", prop_dictionary_externalize(dict)); 104 #endif 105 prop_dictionary_get_bool(dict, "is_console", &console); 106 107 if (!prop_dictionary_get_uint32(dict, "width", &sc->sc_width)) { 108 GPRINTF("no width property\n"); 109 return; 110 } 111 if (!prop_dictionary_get_uint32(dict, "height", &sc->sc_height)) { 112 GPRINTF("no height property\n"); 113 return; 114 } 115 if (!prop_dictionary_get_uint32(dict, "depth", &sc->sc_depth)) { 116 GPRINTF("no depth property\n"); 117 return; 118 } 119 120 /* XXX should be a 64bit value */ 121 if (!prop_dictionary_get_uint32(dict, "address", &fboffset)) { 122 GPRINTF("no address property\n"); 123 return; 124 } 125 126 sc->sc_fboffset = fboffset; 127 128 sc->sc_fbaddr = NULL; 129 if (prop_dictionary_get_uint64(dict, "virtual_address", &fbaddr)) { 130 sc->sc_fbaddr = (void *)(uintptr_t)fbaddr; 131 } 132 133 sc->sc_shadowfb = NULL; 134 if (!prop_dictionary_get_bool(dict, "enable_shadowfb", 135 &sc->sc_enable_shadowfb)) 136 #ifdef GENFB_SHADOWFB 137 sc->sc_enable_shadowfb = true; 138 #else 139 sc->sc_enable_shadowfb = false; 140 #endif 141 142 if (!prop_dictionary_get_uint32(dict, "linebytes", &sc->sc_stride)) 143 sc->sc_stride = (sc->sc_width * sc->sc_depth) >> 3; 144 145 /* 146 * deal with a bug in the Raptor firmware which always sets 147 * stride = width even when depth != 8 148 */ 149 if (sc->sc_stride < sc->sc_width * (sc->sc_depth >> 3)) 150 sc->sc_stride = sc->sc_width * (sc->sc_depth >> 3); 151 152 sc->sc_fbsize = sc->sc_height * sc->sc_stride; 153 154 /* optional colour map callback */ 155 sc->sc_cmcb = NULL; 156 if (prop_dictionary_get_uint64(dict, "cmap_callback", &cmap_cb)) { 157 if (cmap_cb != 0) 158 sc->sc_cmcb = (void *)(vaddr_t)cmap_cb; 159 } 160 161 /* optional pmf callback */ 162 sc->sc_pmfcb = NULL; 163 if (prop_dictionary_get_uint64(dict, "pmf_callback", &pmf_cb)) { 164 if (pmf_cb != 0) 165 sc->sc_pmfcb = (void *)(vaddr_t)pmf_cb; 166 } 167 168 /* optional mode callback */ 169 sc->sc_modecb = NULL; 170 if (prop_dictionary_get_uint64(dict, "mode_callback", &mode_cb)) { 171 if (mode_cb != 0) 172 sc->sc_modecb = (void *)(vaddr_t)mode_cb; 173 } 174 175 /* optional backlight control callback */ 176 sc->sc_backlight = NULL; 177 if (prop_dictionary_get_uint64(dict, "backlight_callback", &bl_cb)) { 178 if (bl_cb != 0) { 179 sc->sc_backlight = (void *)(vaddr_t)bl_cb; 180 aprint_naive_dev(sc->sc_dev, 181 "enabling backlight control\n"); 182 } 183 } 184 185 /* optional brightness control callback */ 186 sc->sc_brightness = NULL; 187 if (prop_dictionary_get_uint64(dict, "brightness_callback", &br_cb)) { 188 if (br_cb != 0) { 189 sc->sc_brightness = (void *)(vaddr_t)br_cb; 190 aprint_naive_dev(sc->sc_dev, 191 "enabling brightness control\n"); 192 if (console && 193 sc->sc_brightness->gpc_upd_parameter != NULL) { 194 pmf_event_register(sc->sc_dev, 195 PMFE_DISPLAY_BRIGHTNESS_UP, 196 genfb_brightness_up, TRUE); 197 pmf_event_register(sc->sc_dev, 198 PMFE_DISPLAY_BRIGHTNESS_DOWN, 199 genfb_brightness_down, TRUE); 200 } 201 } 202 } 203 } 204 205 int 206 genfb_attach(struct genfb_softc *sc, struct genfb_ops *ops) 207 { 208 struct wsemuldisplaydev_attach_args aa; 209 prop_dictionary_t dict; 210 struct rasops_info *ri; 211 uint16_t crow; 212 long defattr; 213 bool console; 214 #ifdef SPLASHSCREEN 215 int i, j; 216 int error = ENXIO; 217 #endif 218 219 dict = device_properties(sc->sc_dev); 220 prop_dictionary_get_bool(dict, "is_console", &console); 221 222 if (prop_dictionary_get_uint16(dict, "cursor-row", &crow) == false) 223 crow = 0; 224 if (prop_dictionary_get_bool(dict, "clear-screen", &sc->sc_want_clear) 225 == false) 226 sc->sc_want_clear = true; 227 228 aprint_verbose_dev(sc->sc_dev, "framebuffer at %p, size %dx%d, depth %d, " 229 "stride %d\n", 230 sc->sc_fboffset ? (void *)(intptr_t)sc->sc_fboffset : sc->sc_fbaddr, 231 sc->sc_width, sc->sc_height, sc->sc_depth, sc->sc_stride); 232 233 sc->sc_defaultscreen_descr = (struct wsscreen_descr){ 234 "default", 235 0, 0, 236 NULL, 237 8, 16, 238 WSSCREEN_WSCOLORS | WSSCREEN_HILIT, 239 NULL 240 }; 241 sc->sc_screens[0] = &sc->sc_defaultscreen_descr; 242 sc->sc_screenlist = (struct wsscreen_list){1, sc->sc_screens}; 243 memcpy(&sc->sc_ops, ops, sizeof(struct genfb_ops)); 244 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 245 if (sc->sc_modecb != NULL) 246 sc->sc_modecb->gmc_setmode(sc, sc->sc_mode); 247 248 sc->sc_accessops.ioctl = genfb_ioctl; 249 sc->sc_accessops.mmap = genfb_mmap; 250 sc->sc_accessops.pollc = genfb_pollc; 251 252 if (sc->sc_enable_shadowfb) { 253 sc->sc_shadowfb = kmem_alloc(sc->sc_fbsize, KM_SLEEP); 254 if (sc->sc_want_clear == false && sc->sc_shadowfb != NULL) 255 memcpy(sc->sc_shadowfb, sc->sc_fbaddr, sc->sc_fbsize); 256 } 257 258 vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr, 259 &sc->sc_accessops); 260 sc->vd.init_screen = genfb_init_screen; 261 262 /* Do not print anything between this point and the screen 263 * clear operation below. Otherwise it will be lost. */ 264 265 ri = &sc->sc_console_screen.scr_ri; 266 267 vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, 268 &defattr); 269 sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 270 271 #ifdef SPLASHSCREEN 272 /* 273 * If system isn't going to go multiuser, or user has requested to see 274 * boot text, don't render splash screen immediately 275 */ 276 if (DISABLESPLASH) 277 #endif 278 vcons_redraw_screen(&sc->sc_console_screen); 279 280 sc->sc_defaultscreen_descr.textops = &ri->ri_ops; 281 sc->sc_defaultscreen_descr.capabilities = ri->ri_caps; 282 sc->sc_defaultscreen_descr.nrows = ri->ri_rows; 283 sc->sc_defaultscreen_descr.ncols = ri->ri_cols; 284 285 if (crow >= ri->ri_rows) { 286 crow = 0; 287 sc->sc_want_clear = 1; 288 } 289 290 if (console) 291 wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, crow, 292 defattr); 293 294 /* Clear the whole screen to bring it to a known state. */ 295 if (sc->sc_want_clear) 296 (*ri->ri_ops.eraserows)(ri, 0, ri->ri_rows, defattr); 297 298 #ifdef SPLASHSCREEN 299 j = 0; 300 for (i = 0; i < min(1 << sc->sc_depth, 256); i++) { 301 if (i >= SPLASH_CMAP_OFFSET && 302 i < SPLASH_CMAP_OFFSET + SPLASH_CMAP_SIZE) { 303 splash_get_cmap(i, 304 &sc->sc_cmap_red[i], 305 &sc->sc_cmap_green[i], 306 &sc->sc_cmap_blue[i]); 307 } else { 308 sc->sc_cmap_red[i] = rasops_cmap[j]; 309 sc->sc_cmap_green[i] = rasops_cmap[j + 1]; 310 sc->sc_cmap_blue[i] = rasops_cmap[j + 2]; 311 } 312 j += 3; 313 } 314 genfb_restore_palette(sc); 315 316 sc->sc_splash.si_depth = sc->sc_depth; 317 sc->sc_splash.si_bits = sc->sc_console_screen.scr_ri.ri_origbits; 318 sc->sc_splash.si_hwbits = sc->sc_fbaddr; 319 sc->sc_splash.si_width = sc->sc_width; 320 sc->sc_splash.si_height = sc->sc_height; 321 sc->sc_splash.si_stride = sc->sc_stride; 322 sc->sc_splash.si_fillrect = NULL; 323 if (!DISABLESPLASH) { 324 error = splash_render(&sc->sc_splash, 325 SPLASH_F_CENTER|SPLASH_F_FILL); 326 if (error) { 327 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 328 genfb_init_palette(sc); 329 vcons_replay_msgbuf(&sc->sc_console_screen); 330 } 331 } 332 #else 333 genfb_init_palette(sc); 334 if (console) 335 vcons_replay_msgbuf(&sc->sc_console_screen); 336 #endif 337 338 if (genfb_softc == NULL) 339 genfb_softc = sc; 340 341 aa.console = console; 342 aa.scrdata = &sc->sc_screenlist; 343 aa.accessops = &sc->sc_accessops; 344 aa.accesscookie = &sc->vd; 345 346 #ifdef GENFB_DISABLE_TEXT 347 if (!DISABLESPLASH && error == 0) 348 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 349 #endif 350 351 config_found_ia(sc->sc_dev, "wsemuldisplaydev", &aa, 352 wsemuldisplaydevprint); 353 354 return 0; 355 } 356 357 static int 358 genfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 359 struct lwp *l) 360 { 361 struct vcons_data *vd = v; 362 struct genfb_softc *sc = vd->cookie; 363 struct wsdisplay_fbinfo *wdf; 364 struct vcons_screen *ms = vd->active; 365 struct wsdisplay_param *param; 366 int new_mode, error, val, ret; 367 368 switch (cmd) { 369 case WSDISPLAYIO_GINFO: 370 if (ms == NULL) 371 return ENODEV; 372 wdf = (void *)data; 373 wdf->height = ms->scr_ri.ri_height; 374 wdf->width = ms->scr_ri.ri_width; 375 wdf->depth = ms->scr_ri.ri_depth; 376 wdf->cmsize = 256; 377 return 0; 378 379 case WSDISPLAYIO_GETCMAP: 380 return genfb_getcmap(sc, 381 (struct wsdisplay_cmap *)data); 382 383 case WSDISPLAYIO_PUTCMAP: 384 return genfb_putcmap(sc, 385 (struct wsdisplay_cmap *)data); 386 387 case WSDISPLAYIO_LINEBYTES: 388 *(u_int *)data = sc->sc_stride; 389 return 0; 390 391 case WSDISPLAYIO_SMODE: 392 new_mode = *(int *)data; 393 394 /* notify the bus backend */ 395 error = 0; 396 if (sc->sc_ops.genfb_ioctl) 397 error = sc->sc_ops.genfb_ioctl(sc, vs, 398 cmd, data, flag, l); 399 if (error && error != EPASSTHROUGH) 400 return error; 401 402 if (new_mode != sc->sc_mode) { 403 sc->sc_mode = new_mode; 404 if (sc->sc_modecb != NULL) 405 sc->sc_modecb->gmc_setmode(sc, 406 sc->sc_mode); 407 if (new_mode == WSDISPLAYIO_MODE_EMUL) { 408 genfb_restore_palette(sc); 409 vcons_redraw_screen(ms); 410 } 411 } 412 return 0; 413 414 case WSDISPLAYIO_SSPLASH: 415 #if defined(SPLASHSCREEN) 416 if(*(int *)data == 1) { 417 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 418 splash_render(&sc->sc_splash, 419 SPLASH_F_CENTER|SPLASH_F_FILL); 420 } else { 421 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 422 genfb_init_palette(sc); 423 } 424 vcons_redraw_screen(ms); 425 return 0; 426 #else 427 return ENODEV; 428 #endif 429 case WSDISPLAYIO_GETPARAM: 430 param = (struct wsdisplay_param *)data; 431 switch (param->param) { 432 case WSDISPLAYIO_PARAM_BRIGHTNESS: 433 if (sc->sc_brightness == NULL) 434 return EPASSTHROUGH; 435 param->min = 0; 436 param->max = 255; 437 return sc->sc_brightness->gpc_get_parameter( 438 sc->sc_brightness->gpc_cookie, 439 ¶m->curval); 440 case WSDISPLAYIO_PARAM_BACKLIGHT: 441 if (sc->sc_backlight == NULL) 442 return EPASSTHROUGH; 443 param->min = 0; 444 param->max = 1; 445 return sc->sc_backlight->gpc_get_parameter( 446 sc->sc_backlight->gpc_cookie, 447 ¶m->curval); 448 } 449 return EPASSTHROUGH; 450 451 case WSDISPLAYIO_SETPARAM: 452 param = (struct wsdisplay_param *)data; 453 switch (param->param) { 454 case WSDISPLAYIO_PARAM_BRIGHTNESS: 455 if (sc->sc_brightness == NULL) 456 return EPASSTHROUGH; 457 val = param->curval; 458 if (val < 0) val = 0; 459 if (val > 255) val = 255; 460 return sc->sc_brightness->gpc_set_parameter( 461 sc->sc_brightness->gpc_cookie, val); 462 case WSDISPLAYIO_PARAM_BACKLIGHT: 463 if (sc->sc_backlight == NULL) 464 return EPASSTHROUGH; 465 val = param->curval; 466 if (val < 0) val = 0; 467 if (val > 1) val = 1; 468 return sc->sc_backlight->gpc_set_parameter( 469 sc->sc_backlight->gpc_cookie, val); 470 } 471 return EPASSTHROUGH; 472 } 473 ret = EPASSTHROUGH; 474 if (sc->sc_ops.genfb_ioctl) 475 ret = sc->sc_ops.genfb_ioctl(sc, vs, cmd, data, flag, l); 476 if (ret != EPASSTHROUGH) 477 return ret; 478 /* 479 * XXX 480 * handle these only if there either is no ioctl() handler or it didn't 481 * know how to deal with them. This allows bus frontends to override 482 * them but still provides fallback implementations 483 */ 484 switch (cmd) { 485 case WSDISPLAYIO_GET_EDID: { 486 487 struct wsdisplayio_edid_info *d = data; 488 return wsdisplayio_get_edid(sc->sc_dev, d); 489 } 490 491 case WSDISPLAYIO_GET_FBINFO: { 492 struct wsdisplayio_fbinfo *fbi = data; 493 return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); 494 } 495 } 496 return EPASSTHROUGH; 497 } 498 499 static paddr_t 500 genfb_mmap(void *v, void *vs, off_t offset, int prot) 501 { 502 struct vcons_data *vd = v; 503 struct genfb_softc *sc = vd->cookie; 504 505 if (sc->sc_ops.genfb_mmap) 506 return sc->sc_ops.genfb_mmap(sc, vs, offset, prot); 507 508 return -1; 509 } 510 511 static void 512 genfb_pollc(void *v, int on) 513 { 514 struct vcons_data *vd = v; 515 struct genfb_softc *sc = vd->cookie; 516 517 if (sc == NULL) 518 return; 519 520 if (on) 521 genfb_enable_polling(sc->sc_dev); 522 else 523 genfb_disable_polling(sc->sc_dev); 524 } 525 526 static void 527 genfb_init_screen(void *cookie, struct vcons_screen *scr, 528 int existing, long *defattr) 529 { 530 struct genfb_softc *sc = cookie; 531 struct rasops_info *ri = &scr->scr_ri; 532 533 ri->ri_depth = sc->sc_depth; 534 ri->ri_width = sc->sc_width; 535 ri->ri_height = sc->sc_height; 536 ri->ri_stride = sc->sc_stride; 537 ri->ri_flg = RI_CENTER; 538 if (sc->sc_want_clear) 539 ri->ri_flg |= RI_FULLCLEAR; 540 541 if (sc->sc_shadowfb != NULL) { 542 ri->ri_hwbits = (char *)sc->sc_fbaddr; 543 ri->ri_bits = (char *)sc->sc_shadowfb; 544 } else { 545 ri->ri_bits = (char *)sc->sc_fbaddr; 546 scr->scr_flags |= VCONS_DONT_READ; 547 } 548 549 if (existing && sc->sc_want_clear) { 550 ri->ri_flg |= RI_CLEAR; 551 } 552 553 if (ri->ri_depth == 32 || ri->ri_depth == 24) { 554 bool is_bgr = false; 555 556 if (ri->ri_depth == 32) { 557 ri->ri_flg |= RI_ENABLE_ALPHA; 558 } 559 prop_dictionary_get_bool(device_properties(sc->sc_dev), 560 "is_bgr", &is_bgr); 561 if (is_bgr) { 562 /* someone requested BGR */ 563 ri->ri_rnum = 8; 564 ri->ri_gnum = 8; 565 ri->ri_bnum = 8; 566 ri->ri_rpos = 0; 567 ri->ri_gpos = 8; 568 ri->ri_bpos = 16; 569 } else { 570 /* assume RGB */ 571 ri->ri_rnum = 8; 572 ri->ri_gnum = 8; 573 ri->ri_bnum = 8; 574 ri->ri_rpos = 16; 575 ri->ri_gpos = 8; 576 ri->ri_bpos = 0; 577 } 578 } 579 580 if (ri->ri_depth == 8 && sc->sc_cmcb != NULL) 581 ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB; 582 583 584 rasops_init(ri, 0, 0); 585 ri->ri_caps = WSSCREEN_WSCOLORS; 586 587 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 588 sc->sc_width / ri->ri_font->fontwidth); 589 590 /* TODO: actually center output */ 591 ri->ri_hw = scr; 592 593 #ifdef GENFB_DISABLE_TEXT 594 if (scr == &sc->sc_console_screen && !DISABLESPLASH) 595 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 596 #endif 597 } 598 599 static int 600 genfb_putcmap(struct genfb_softc *sc, struct wsdisplay_cmap *cm) 601 { 602 u_char *r, *g, *b; 603 u_int index = cm->index; 604 u_int count = cm->count; 605 int i, error; 606 u_char rbuf[256], gbuf[256], bbuf[256]; 607 608 #ifdef GENFB_DEBUG 609 aprint_debug("putcmap: %d %d\n",index, count); 610 #endif 611 if (cm->index >= 256 || cm->count > 256 || 612 (cm->index + cm->count) > 256) 613 return EINVAL; 614 error = copyin(cm->red, &rbuf[index], count); 615 if (error) 616 return error; 617 error = copyin(cm->green, &gbuf[index], count); 618 if (error) 619 return error; 620 error = copyin(cm->blue, &bbuf[index], count); 621 if (error) 622 return error; 623 624 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 625 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 626 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 627 628 r = &sc->sc_cmap_red[index]; 629 g = &sc->sc_cmap_green[index]; 630 b = &sc->sc_cmap_blue[index]; 631 632 for (i = 0; i < count; i++) { 633 genfb_putpalreg(sc, index, *r, *g, *b); 634 index++; 635 r++, g++, b++; 636 } 637 return 0; 638 } 639 640 static int 641 genfb_getcmap(struct genfb_softc *sc, struct wsdisplay_cmap *cm) 642 { 643 u_int index = cm->index; 644 u_int count = cm->count; 645 int error; 646 647 if (index >= 255 || count > 256 || index + count > 256) 648 return EINVAL; 649 650 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 651 if (error) 652 return error; 653 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 654 if (error) 655 return error; 656 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 657 if (error) 658 return error; 659 660 return 0; 661 } 662 663 void 664 genfb_restore_palette(struct genfb_softc *sc) 665 { 666 int i; 667 668 if (sc->sc_depth <= 8) { 669 for (i = 0; i < (1 << sc->sc_depth); i++) { 670 genfb_putpalreg(sc, i, sc->sc_cmap_red[i], 671 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 672 } 673 } 674 } 675 676 static void 677 genfb_init_palette(struct genfb_softc *sc) 678 { 679 int i, j, tmp; 680 681 if (sc->sc_depth == 8) { 682 /* generate an r3g3b2 colour map */ 683 for (i = 0; i < 256; i++) { 684 tmp = i & 0xe0; 685 /* 686 * replicate bits so 0xe0 maps to a red value of 0xff 687 * in order to make white look actually white 688 */ 689 tmp |= (tmp >> 3) | (tmp >> 6); 690 sc->sc_cmap_red[i] = tmp; 691 692 tmp = (i & 0x1c) << 3; 693 tmp |= (tmp >> 3) | (tmp >> 6); 694 sc->sc_cmap_green[i] = tmp; 695 696 tmp = (i & 0x03) << 6; 697 tmp |= tmp >> 2; 698 tmp |= tmp >> 4; 699 sc->sc_cmap_blue[i] = tmp; 700 701 genfb_putpalreg(sc, i, sc->sc_cmap_red[i], 702 sc->sc_cmap_green[i], 703 sc->sc_cmap_blue[i]); 704 } 705 } else { 706 /* steal rasops' ANSI cmap */ 707 j = 0; 708 for (i = 0; i < 256; i++) { 709 sc->sc_cmap_red[i] = rasops_cmap[j]; 710 sc->sc_cmap_green[i] = rasops_cmap[j + 1]; 711 sc->sc_cmap_blue[i] = rasops_cmap[j + 2]; 712 j += 3; 713 } 714 } 715 } 716 717 static int 718 genfb_putpalreg(struct genfb_softc *sc, uint8_t idx, uint8_t r, uint8_t g, 719 uint8_t b) 720 { 721 722 if (sc->sc_cmcb) { 723 724 sc->sc_cmcb->gcc_set_mapreg(sc->sc_cmcb->gcc_cookie, 725 idx, r, g, b); 726 } 727 return 0; 728 } 729 730 void 731 genfb_cnattach(void) 732 { 733 genfb_cnattach_called = 1; 734 } 735 736 void 737 genfb_disable(void) 738 { 739 genfb_enabled = 0; 740 } 741 742 int 743 genfb_is_console(void) 744 { 745 return genfb_cnattach_called; 746 } 747 748 int 749 genfb_is_enabled(void) 750 { 751 return genfb_enabled; 752 } 753 754 int 755 genfb_borrow(bus_addr_t addr, bus_space_handle_t *hdlp) 756 { 757 struct genfb_softc *sc = genfb_softc; 758 759 if (sc && sc->sc_ops.genfb_borrow) 760 return sc->sc_ops.genfb_borrow(sc, addr, hdlp); 761 return 0; 762 } 763 764 static void 765 genfb_brightness_up(device_t dev) 766 { 767 struct genfb_softc *sc = device_private(dev); 768 769 KASSERT(sc->sc_brightness != NULL && 770 sc->sc_brightness->gpc_upd_parameter != NULL); 771 772 (void)sc->sc_brightness->gpc_upd_parameter( 773 sc->sc_brightness->gpc_cookie, GENFB_BRIGHTNESS_STEP); 774 } 775 776 static void 777 genfb_brightness_down(device_t dev) 778 { 779 struct genfb_softc *sc = device_private(dev); 780 781 KASSERT(sc->sc_brightness != NULL && 782 sc->sc_brightness->gpc_upd_parameter != NULL); 783 784 (void)sc->sc_brightness->gpc_upd_parameter( 785 sc->sc_brightness->gpc_cookie, - GENFB_BRIGHTNESS_STEP); 786 } 787 788 void 789 genfb_enable_polling(device_t dev) 790 { 791 struct genfb_softc *sc = device_private(dev); 792 793 if (sc->sc_console_screen.scr_vd) { 794 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 795 vcons_hard_switch(&sc->sc_console_screen); 796 vcons_enable_polling(&sc->vd); 797 if (sc->sc_ops.genfb_enable_polling) 798 (*sc->sc_ops.genfb_enable_polling)(sc); 799 } 800 } 801 802 void 803 genfb_disable_polling(device_t dev) 804 { 805 struct genfb_softc *sc = device_private(dev); 806 807 if (sc->sc_console_screen.scr_vd) { 808 if (sc->sc_ops.genfb_disable_polling) 809 (*sc->sc_ops.genfb_disable_polling)(sc); 810 vcons_disable_polling(&sc->vd); 811 } 812 } 813
Indexes created Wed Oct 15 16:09:53 GMT 2025