genfb.c revision 1.82
1 /* $NetBSD: genfb.c,v 1.82 2021/04/24 23:37:00 thorpej 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 1.82 2021/04/24 23:37:00 thorpej 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 #include <sys/reboot.h> 43 44 #include <uvm/uvm_extern.h> 45 46 #include <dev/wscons/wsconsio.h> 47 #include <dev/wscons/wsdisplayvar.h> 48 #include <dev/rasops/rasops.h> 49 #include <dev/wsfont/wsfont.h> 50 51 #include <dev/wscons/wsdisplay_vconsvar.h> 52 53 #include <dev/wsfb/genfbvar.h> 54 55 #include <dev/videomode/videomode.h> 56 #include <dev/videomode/edidvar.h> 57 58 #ifdef GENFB_DISABLE_TEXT 59 #define DISABLESPLASH (boothowto & (RB_SINGLE | RB_USERCONF | RB_ASKNAME | \ 60 AB_VERBOSE | AB_DEBUG) ) 61 #endif 62 63 #ifdef _KERNEL_OPT 64 #include "opt_genfb.h" 65 #include "opt_wsfb.h" 66 #include "opt_rasops.h" 67 #endif 68 69 #ifdef GENFB_DEBUG 70 #define GPRINTF panic 71 #else 72 #define GPRINTF aprint_debug 73 #endif 74 75 #define GENFB_BRIGHTNESS_STEP 15 76 #define GENFB_CHAR_WIDTH_MM 3 77 78 static int genfb_ioctl(void *, void *, u_long, void *, int, struct lwp *); 79 static paddr_t genfb_mmap(void *, void *, off_t, int); 80 static void genfb_pollc(void *, int); 81 82 static void genfb_init_screen(void *, struct vcons_screen *, int, long *); 83 static int genfb_calc_hsize(struct genfb_softc *); 84 static int genfb_calc_cols(struct genfb_softc *); 85 86 static int genfb_putcmap(struct genfb_softc *, struct wsdisplay_cmap *); 87 static int genfb_getcmap(struct genfb_softc *, struct wsdisplay_cmap *); 88 static int genfb_putpalreg(struct genfb_softc *, uint8_t, uint8_t, 89 uint8_t, uint8_t); 90 static void genfb_init_palette(struct genfb_softc *); 91 92 static void genfb_brightness_up(device_t); 93 static void genfb_brightness_down(device_t); 94 95 #if GENFB_GLYPHCACHE > 0 96 static int genfb_setup_glyphcache(struct genfb_softc *, long); 97 static void genfb_putchar(void *, int, int, u_int, long); 98 #endif 99 100 extern const u_char rasops_cmap[768]; 101 102 static int genfb_cnattach_called = 0; 103 static int genfb_enabled = 1; 104 105 static struct genfb_softc *genfb_softc = NULL; 106 107 void 108 genfb_init(struct genfb_softc *sc) 109 { 110 prop_dictionary_t dict; 111 uint64_t cmap_cb, pmf_cb, mode_cb, bl_cb, br_cb, fbaddr; 112 uint64_t fboffset; 113 bool console; 114 115 dict = device_properties(sc->sc_dev); 116 #ifdef GENFB_DEBUG 117 printf("%s", prop_dictionary_externalize(dict)); 118 #endif 119 prop_dictionary_get_bool(dict, "is_console", &console); 120 121 if (!prop_dictionary_get_uint32(dict, "width", &sc->sc_width)) { 122 GPRINTF("no width property\n"); 123 return; 124 } 125 if (!prop_dictionary_get_uint32(dict, "height", &sc->sc_height)) { 126 GPRINTF("no height property\n"); 127 return; 128 } 129 if (!prop_dictionary_get_uint32(dict, "depth", &sc->sc_depth)) { 130 GPRINTF("no depth property\n"); 131 return; 132 } 133 134 if (!prop_dictionary_get_uint64(dict, "address", &fboffset)) { 135 GPRINTF("no address property\n"); 136 return; 137 } 138 139 sc->sc_fboffset = (bus_addr_t)fboffset; 140 141 sc->sc_fbaddr = NULL; 142 if (prop_dictionary_get_uint64(dict, "virtual_address", &fbaddr)) { 143 sc->sc_fbaddr = (void *)(uintptr_t)fbaddr; 144 } 145 146 sc->sc_shadowfb = NULL; 147 if (!prop_dictionary_get_bool(dict, "enable_shadowfb", 148 &sc->sc_enable_shadowfb)) 149 #ifdef GENFB_SHADOWFB 150 sc->sc_enable_shadowfb = true; 151 #else 152 sc->sc_enable_shadowfb = false; 153 #endif 154 155 if (!prop_dictionary_get_uint32(dict, "linebytes", &sc->sc_stride)) 156 sc->sc_stride = (sc->sc_width * sc->sc_depth) >> 3; 157 158 /* 159 * deal with a bug in the Raptor firmware which always sets 160 * stride = width even when depth != 8 161 */ 162 if (sc->sc_stride < sc->sc_width * (sc->sc_depth >> 3)) 163 sc->sc_stride = sc->sc_width * (sc->sc_depth >> 3); 164 165 sc->sc_fbsize = sc->sc_height * sc->sc_stride; 166 167 /* optional colour map callback */ 168 sc->sc_cmcb = NULL; 169 if (prop_dictionary_get_uint64(dict, "cmap_callback", &cmap_cb)) { 170 if (cmap_cb != 0) 171 sc->sc_cmcb = (void *)(vaddr_t)cmap_cb; 172 } 173 174 /* optional pmf callback */ 175 sc->sc_pmfcb = NULL; 176 if (prop_dictionary_get_uint64(dict, "pmf_callback", &pmf_cb)) { 177 if (pmf_cb != 0) 178 sc->sc_pmfcb = (void *)(vaddr_t)pmf_cb; 179 } 180 181 /* optional mode callback */ 182 sc->sc_modecb = NULL; 183 if (prop_dictionary_get_uint64(dict, "mode_callback", &mode_cb)) { 184 if (mode_cb != 0) 185 sc->sc_modecb = (void *)(vaddr_t)mode_cb; 186 } 187 188 /* optional backlight control callback */ 189 sc->sc_backlight = NULL; 190 if (prop_dictionary_get_uint64(dict, "backlight_callback", &bl_cb)) { 191 if (bl_cb != 0) { 192 sc->sc_backlight = (void *)(vaddr_t)bl_cb; 193 aprint_naive_dev(sc->sc_dev, 194 "enabling backlight control\n"); 195 } 196 } 197 198 /* optional brightness control callback */ 199 sc->sc_brightness = NULL; 200 if (prop_dictionary_get_uint64(dict, "brightness_callback", &br_cb)) { 201 if (br_cb != 0) { 202 sc->sc_brightness = (void *)(vaddr_t)br_cb; 203 aprint_naive_dev(sc->sc_dev, 204 "enabling brightness control\n"); 205 if (console && 206 sc->sc_brightness->gpc_upd_parameter != NULL) { 207 pmf_event_register(sc->sc_dev, 208 PMFE_DISPLAY_BRIGHTNESS_UP, 209 genfb_brightness_up, TRUE); 210 pmf_event_register(sc->sc_dev, 211 PMFE_DISPLAY_BRIGHTNESS_DOWN, 212 genfb_brightness_down, TRUE); 213 } 214 } 215 } 216 } 217 218 int 219 genfb_attach(struct genfb_softc *sc, struct genfb_ops *ops) 220 { 221 struct wsemuldisplaydev_attach_args aa; 222 prop_dictionary_t dict; 223 struct rasops_info *ri; 224 paddr_t fb_phys; 225 uint16_t crow; 226 long defattr; 227 bool console; 228 #ifdef SPLASHSCREEN 229 int i, j; 230 int error = ENXIO; 231 #endif 232 233 dict = device_properties(sc->sc_dev); 234 prop_dictionary_get_bool(dict, "is_console", &console); 235 236 if (prop_dictionary_get_uint16(dict, "cursor-row", &crow) == false) 237 crow = 0; 238 if (prop_dictionary_get_bool(dict, "clear-screen", &sc->sc_want_clear) 239 == false) 240 sc->sc_want_clear = true; 241 242 fb_phys = (paddr_t)sc->sc_fboffset; 243 if (fb_phys == 0) { 244 KASSERT(sc->sc_fbaddr != NULL); 245 (void)pmap_extract(pmap_kernel(), (vaddr_t)sc->sc_fbaddr, 246 &fb_phys); 247 } 248 249 aprint_verbose_dev(sc->sc_dev, "framebuffer at %p, size %dx%d, depth %d, " 250 "stride %d\n", 251 fb_phys ? (void *)(intptr_t)fb_phys : sc->sc_fbaddr, 252 sc->sc_width, sc->sc_height, sc->sc_depth, sc->sc_stride); 253 254 sc->sc_defaultscreen_descr = (struct wsscreen_descr){ 255 "default", 256 0, 0, 257 NULL, 258 8, 16, 259 WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE | 260 WSSCREEN_RESIZE, 261 NULL 262 }; 263 sc->sc_screens[0] = &sc->sc_defaultscreen_descr; 264 sc->sc_screenlist = (struct wsscreen_list){1, sc->sc_screens}; 265 memcpy(&sc->sc_ops, ops, sizeof(struct genfb_ops)); 266 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 267 if (sc->sc_modecb != NULL) 268 sc->sc_modecb->gmc_setmode(sc, sc->sc_mode); 269 270 sc->sc_accessops.ioctl = genfb_ioctl; 271 sc->sc_accessops.mmap = genfb_mmap; 272 sc->sc_accessops.pollc = genfb_pollc; 273 274 if (sc->sc_enable_shadowfb) { 275 sc->sc_shadowfb = kmem_alloc(sc->sc_fbsize, KM_SLEEP); 276 if (sc->sc_want_clear == false) 277 memcpy(sc->sc_shadowfb, sc->sc_fbaddr, sc->sc_fbsize); 278 aprint_verbose_dev(sc->sc_dev, 279 "shadow framebuffer enabled, size %zu KB\n", 280 sc->sc_fbsize >> 10); 281 } 282 283 vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr, 284 &sc->sc_accessops); 285 sc->vd.init_screen = genfb_init_screen; 286 287 /* Do not print anything between this point and the screen 288 * clear operation below. Otherwise it will be lost. */ 289 290 ri = &sc->sc_console_screen.scr_ri; 291 292 vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, 293 &defattr); 294 sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 295 296 #if GENFB_GLYPHCACHE > 0 297 genfb_setup_glyphcache(sc, defattr); 298 #endif 299 300 #ifdef SPLASHSCREEN 301 /* 302 * If system isn't going to go multiuser, or user has requested to see 303 * boot text, don't render splash screen immediately 304 */ 305 if (DISABLESPLASH) 306 #endif 307 vcons_redraw_screen(&sc->sc_console_screen); 308 309 sc->sc_defaultscreen_descr.textops = &ri->ri_ops; 310 sc->sc_defaultscreen_descr.capabilities = ri->ri_caps; 311 sc->sc_defaultscreen_descr.nrows = ri->ri_rows; 312 sc->sc_defaultscreen_descr.ncols = ri->ri_cols; 313 314 if (crow >= ri->ri_rows) { 315 crow = 0; 316 sc->sc_want_clear = 1; 317 } 318 319 if (console) 320 wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, crow, 321 defattr); 322 323 /* Clear the whole screen to bring it to a known state. */ 324 if (sc->sc_want_clear) 325 (*ri->ri_ops.eraserows)(ri, 0, ri->ri_rows, defattr); 326 327 #ifdef SPLASHSCREEN 328 j = 0; 329 for (i = 0; i < uimin(1 << sc->sc_depth, 256); i++) { 330 if (i >= SPLASH_CMAP_OFFSET && 331 i < SPLASH_CMAP_OFFSET + SPLASH_CMAP_SIZE) { 332 splash_get_cmap(i, 333 &sc->sc_cmap_red[i], 334 &sc->sc_cmap_green[i], 335 &sc->sc_cmap_blue[i]); 336 } else { 337 sc->sc_cmap_red[i] = rasops_cmap[j]; 338 sc->sc_cmap_green[i] = rasops_cmap[j + 1]; 339 sc->sc_cmap_blue[i] = rasops_cmap[j + 2]; 340 } 341 j += 3; 342 } 343 genfb_restore_palette(sc); 344 345 sc->sc_splash.si_depth = sc->sc_depth; 346 sc->sc_splash.si_bits = sc->sc_console_screen.scr_ri.ri_origbits; 347 sc->sc_splash.si_hwbits = sc->sc_fbaddr; 348 sc->sc_splash.si_width = sc->sc_width; 349 sc->sc_splash.si_height = sc->sc_height; 350 sc->sc_splash.si_stride = sc->sc_stride; 351 sc->sc_splash.si_fillrect = NULL; 352 if (!DISABLESPLASH) { 353 error = splash_render(&sc->sc_splash, 354 SPLASH_F_CENTER|SPLASH_F_FILL); 355 if (error) { 356 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 357 genfb_init_palette(sc); 358 vcons_replay_msgbuf(&sc->sc_console_screen); 359 } 360 } 361 #else 362 genfb_init_palette(sc); 363 if (console && (boothowto & (AB_SILENT|AB_QUIET)) == 0) 364 vcons_replay_msgbuf(&sc->sc_console_screen); 365 #endif 366 367 if (genfb_softc == NULL) 368 genfb_softc = sc; 369 370 aa.console = console; 371 aa.scrdata = &sc->sc_screenlist; 372 aa.accessops = &sc->sc_accessops; 373 aa.accesscookie = &sc->vd; 374 375 #ifdef GENFB_DISABLE_TEXT 376 if (!DISABLESPLASH && error == 0) 377 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 378 #endif 379 380 config_found(sc->sc_dev, &aa, wsemuldisplaydevprint, 381 CFARG_IATTR, "wsemuldisplaydev", 382 CFARG_EOL); 383 384 return 0; 385 } 386 387 static int 388 genfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 389 struct lwp *l) 390 { 391 struct vcons_data *vd = v; 392 struct genfb_softc *sc = vd->cookie; 393 struct wsdisplay_fbinfo *wdf; 394 struct vcons_screen *ms = vd->active; 395 struct wsdisplay_param *param; 396 int new_mode, error, val, ret; 397 398 switch (cmd) { 399 case WSDISPLAYIO_GINFO: 400 if (ms == NULL) 401 return ENODEV; 402 wdf = (void *)data; 403 wdf->height = ms->scr_ri.ri_height; 404 wdf->width = ms->scr_ri.ri_width; 405 wdf->depth = ms->scr_ri.ri_depth; 406 wdf->cmsize = 256; 407 return 0; 408 409 case WSDISPLAYIO_GETCMAP: 410 return genfb_getcmap(sc, 411 (struct wsdisplay_cmap *)data); 412 413 case WSDISPLAYIO_PUTCMAP: 414 return genfb_putcmap(sc, 415 (struct wsdisplay_cmap *)data); 416 417 case WSDISPLAYIO_LINEBYTES: 418 *(u_int *)data = sc->sc_stride; 419 return 0; 420 421 case WSDISPLAYIO_SMODE: 422 new_mode = *(int *)data; 423 424 /* notify the bus backend */ 425 error = 0; 426 if (sc->sc_ops.genfb_ioctl) 427 error = sc->sc_ops.genfb_ioctl(sc, vs, 428 cmd, data, flag, l); 429 if (error && error != EPASSTHROUGH) 430 return error; 431 432 if (new_mode != sc->sc_mode) { 433 sc->sc_mode = new_mode; 434 if (sc->sc_modecb != NULL) 435 sc->sc_modecb->gmc_setmode(sc, 436 sc->sc_mode); 437 if (new_mode == WSDISPLAYIO_MODE_EMUL) { 438 genfb_restore_palette(sc); 439 vcons_redraw_screen(ms); 440 } 441 } 442 return 0; 443 444 case WSDISPLAYIO_SSPLASH: 445 #if defined(SPLASHSCREEN) 446 if(*(int *)data == 1) { 447 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 448 splash_render(&sc->sc_splash, 449 SPLASH_F_CENTER|SPLASH_F_FILL); 450 } else { 451 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 452 genfb_init_palette(sc); 453 } 454 vcons_redraw_screen(ms); 455 return 0; 456 #else 457 return ENODEV; 458 #endif 459 case WSDISPLAYIO_GETPARAM: 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 param->min = 0; 466 param->max = 255; 467 return sc->sc_brightness->gpc_get_parameter( 468 sc->sc_brightness->gpc_cookie, 469 ¶m->curval); 470 case WSDISPLAYIO_PARAM_BACKLIGHT: 471 if (sc->sc_backlight == NULL) 472 return EPASSTHROUGH; 473 param->min = 0; 474 param->max = 1; 475 return sc->sc_backlight->gpc_get_parameter( 476 sc->sc_backlight->gpc_cookie, 477 ¶m->curval); 478 } 479 return EPASSTHROUGH; 480 481 case WSDISPLAYIO_SETPARAM: 482 param = (struct wsdisplay_param *)data; 483 switch (param->param) { 484 case WSDISPLAYIO_PARAM_BRIGHTNESS: 485 if (sc->sc_brightness == NULL) 486 return EPASSTHROUGH; 487 val = param->curval; 488 if (val < 0) val = 0; 489 if (val > 255) val = 255; 490 return sc->sc_brightness->gpc_set_parameter( 491 sc->sc_brightness->gpc_cookie, val); 492 case WSDISPLAYIO_PARAM_BACKLIGHT: 493 if (sc->sc_backlight == NULL) 494 return EPASSTHROUGH; 495 val = param->curval; 496 if (val < 0) val = 0; 497 if (val > 1) val = 1; 498 return sc->sc_backlight->gpc_set_parameter( 499 sc->sc_backlight->gpc_cookie, val); 500 } 501 return EPASSTHROUGH; 502 } 503 ret = EPASSTHROUGH; 504 if (sc->sc_ops.genfb_ioctl) 505 ret = sc->sc_ops.genfb_ioctl(sc, vs, cmd, data, flag, l); 506 if (ret != EPASSTHROUGH) 507 return ret; 508 /* 509 * XXX 510 * handle these only if there either is no ioctl() handler or it didn't 511 * know how to deal with them. This allows bus frontends to override 512 * them but still provides fallback implementations 513 */ 514 switch (cmd) { 515 case WSDISPLAYIO_GET_EDID: { 516 struct wsdisplayio_edid_info *d = data; 517 return wsdisplayio_get_edid(sc->sc_dev, d); 518 } 519 520 case WSDISPLAYIO_GET_FBINFO: { 521 struct wsdisplayio_fbinfo *fbi = data; 522 return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); 523 } 524 } 525 return EPASSTHROUGH; 526 } 527 528 static paddr_t 529 genfb_mmap(void *v, void *vs, off_t offset, int prot) 530 { 531 struct vcons_data *vd = v; 532 struct genfb_softc *sc = vd->cookie; 533 534 if (sc->sc_ops.genfb_mmap) 535 return sc->sc_ops.genfb_mmap(sc, vs, offset, prot); 536 537 return -1; 538 } 539 540 static void 541 genfb_pollc(void *v, int on) 542 { 543 struct vcons_data *vd = v; 544 struct genfb_softc *sc = vd->cookie; 545 546 if (sc == NULL) 547 return; 548 549 if (on) 550 genfb_enable_polling(sc->sc_dev); 551 else 552 genfb_disable_polling(sc->sc_dev); 553 } 554 555 static void 556 genfb_init_screen(void *cookie, struct vcons_screen *scr, 557 int existing, long *defattr) 558 { 559 struct genfb_softc *sc = cookie; 560 struct rasops_info *ri = &scr->scr_ri; 561 int wantcols; 562 bool is_bgr, is_swapped; 563 564 ri->ri_depth = sc->sc_depth; 565 ri->ri_width = sc->sc_width; 566 ri->ri_height = sc->sc_height; 567 ri->ri_stride = sc->sc_stride; 568 ri->ri_flg = RI_CENTER; 569 if (sc->sc_want_clear) 570 ri->ri_flg |= RI_FULLCLEAR; 571 572 scr->scr_flags |= VCONS_LOADFONT; 573 574 if (sc->sc_shadowfb != NULL) { 575 ri->ri_hwbits = (char *)sc->sc_fbaddr; 576 ri->ri_bits = (char *)sc->sc_shadowfb; 577 } else { 578 ri->ri_bits = (char *)sc->sc_fbaddr; 579 scr->scr_flags |= VCONS_DONT_READ; 580 } 581 582 if (existing && sc->sc_want_clear) 583 ri->ri_flg |= RI_CLEAR; 584 585 switch (ri->ri_depth) { 586 case 32: 587 case 24: 588 ri->ri_rnum = ri->ri_gnum = ri->ri_bnum = 8; 589 ri->ri_flg |= RI_ENABLE_ALPHA; 590 591 is_bgr = false; 592 prop_dictionary_get_bool(device_properties(sc->sc_dev), 593 "is_bgr", &is_bgr); 594 595 is_swapped = false; 596 prop_dictionary_get_bool(device_properties(sc->sc_dev), 597 "is_swapped", &is_swapped); 598 599 if (is_bgr) { 600 /* someone requested BGR */ 601 ri->ri_rpos = 0; 602 ri->ri_gpos = 8; 603 ri->ri_bpos = 16; 604 } else if (is_swapped) { 605 /* byte-swapped, must be 32 bpp */ 606 KASSERT(ri->ri_depth == 32); 607 ri->ri_rpos = 8; 608 ri->ri_gpos = 16; 609 ri->ri_bpos = 24; 610 } else { 611 /* assume RGB */ 612 ri->ri_rpos = 16; 613 ri->ri_gpos = 8; 614 ri->ri_bpos = 0; 615 } 616 break; 617 618 case 16: 619 case 15: 620 ri->ri_flg |= RI_ENABLE_ALPHA; 621 break; 622 623 case 8: 624 if (sc->sc_cmcb != NULL) 625 ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB; 626 break; 627 628 case 2: 629 ri->ri_flg |= RI_ENABLE_ALPHA; 630 break; 631 632 default: 633 break; 634 } 635 636 wantcols = genfb_calc_cols(sc); 637 638 rasops_init(ri, 0, wantcols); 639 ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE | 640 WSSCREEN_RESIZE; 641 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 642 sc->sc_width / ri->ri_font->fontwidth); 643 644 ri->ri_hw = scr; 645 #if GENFB_GLYPHCACHE > 0 646 sc->sc_putchar = ri->ri_ops.putchar; 647 ri->ri_ops.putchar = genfb_putchar; 648 #endif 649 #ifdef GENFB_DISABLE_TEXT 650 if (scr == &sc->sc_console_screen && !DISABLESPLASH) 651 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 652 #endif 653 } 654 655 /* Returns the width of the display in millimeters, or 0 if not known. */ 656 static int 657 genfb_calc_hsize(struct genfb_softc *sc) 658 { 659 device_t dev = sc->sc_dev; 660 prop_dictionary_t dict = device_properties(dev); 661 prop_data_t edid_data; 662 struct edid_info *edid; 663 const char *edid_ptr; 664 int hsize; 665 666 edid_data = prop_dictionary_get(dict, "EDID"); 667 if (edid_data == NULL || prop_data_size(edid_data) < 128) 668 return 0; 669 670 edid = kmem_alloc(sizeof(*edid), KM_SLEEP); 671 672 edid_ptr = prop_data_value(edid_data); 673 if (edid_parse(__UNCONST(edid_ptr), edid) == 0) 674 hsize = (int)edid->edid_max_hsize * 10; 675 else 676 hsize = 0; 677 678 kmem_free(edid, sizeof(*edid)); 679 680 return hsize; 681 } 682 683 /* Return the minimum number of character columns based on DPI */ 684 static int 685 genfb_calc_cols(struct genfb_softc *sc) 686 { 687 const int hsize = genfb_calc_hsize(sc); 688 689 return MAX(RASOPS_DEFAULT_WIDTH, hsize / GENFB_CHAR_WIDTH_MM); 690 } 691 692 static int 693 genfb_putcmap(struct genfb_softc *sc, struct wsdisplay_cmap *cm) 694 { 695 u_char *r, *g, *b; 696 u_int index = cm->index; 697 u_int count = cm->count; 698 int i, error; 699 u_char rbuf[256], gbuf[256], bbuf[256]; 700 701 #ifdef GENFB_DEBUG 702 aprint_debug("putcmap: %d %d\n",index, count); 703 #endif 704 if (index >= 256 || count > 256 || index + count > 256) 705 return EINVAL; 706 707 error = copyin(cm->red, &rbuf[index], count); 708 if (error) 709 return error; 710 error = copyin(cm->green, &gbuf[index], count); 711 if (error) 712 return error; 713 error = copyin(cm->blue, &bbuf[index], count); 714 if (error) 715 return error; 716 717 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 718 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 719 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 720 721 r = &sc->sc_cmap_red[index]; 722 g = &sc->sc_cmap_green[index]; 723 b = &sc->sc_cmap_blue[index]; 724 725 for (i = 0; i < count; i++) { 726 genfb_putpalreg(sc, index, *r, *g, *b); 727 index++; 728 r++, g++, b++; 729 } 730 return 0; 731 } 732 733 static int 734 genfb_getcmap(struct genfb_softc *sc, struct wsdisplay_cmap *cm) 735 { 736 u_int index = cm->index; 737 u_int count = cm->count; 738 int error; 739 740 if (index >= 256 || count > 256 || index + count > 256) 741 return EINVAL; 742 743 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 744 if (error) 745 return error; 746 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 747 if (error) 748 return error; 749 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 750 if (error) 751 return error; 752 753 return 0; 754 } 755 756 void 757 genfb_restore_palette(struct genfb_softc *sc) 758 { 759 int i; 760 761 if (sc->sc_depth <= 8) { 762 for (i = 0; i < (1 << sc->sc_depth); i++) { 763 genfb_putpalreg(sc, i, sc->sc_cmap_red[i], 764 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 765 } 766 } 767 } 768 769 static void 770 genfb_init_palette(struct genfb_softc *sc) 771 { 772 int i, j, tmp; 773 774 if (sc->sc_depth == 8) { 775 /* generate an r3g3b2 colour map */ 776 for (i = 0; i < 256; i++) { 777 tmp = i & 0xe0; 778 /* 779 * replicate bits so 0xe0 maps to a red value of 0xff 780 * in order to make white look actually white 781 */ 782 tmp |= (tmp >> 3) | (tmp >> 6); 783 sc->sc_cmap_red[i] = tmp; 784 785 tmp = (i & 0x1c) << 3; 786 tmp |= (tmp >> 3) | (tmp >> 6); 787 sc->sc_cmap_green[i] = tmp; 788 789 tmp = (i & 0x03) << 6; 790 tmp |= tmp >> 2; 791 tmp |= tmp >> 4; 792 sc->sc_cmap_blue[i] = tmp; 793 794 genfb_putpalreg(sc, i, sc->sc_cmap_red[i], 795 sc->sc_cmap_green[i], 796 sc->sc_cmap_blue[i]); 797 } 798 } else { 799 /* steal rasops' ANSI cmap */ 800 j = 0; 801 for (i = 0; i < 256; i++) { 802 sc->sc_cmap_red[i] = rasops_cmap[j]; 803 sc->sc_cmap_green[i] = rasops_cmap[j + 1]; 804 sc->sc_cmap_blue[i] = rasops_cmap[j + 2]; 805 j += 3; 806 } 807 } 808 } 809 810 static int 811 genfb_putpalreg(struct genfb_softc *sc, uint8_t idx, uint8_t r, uint8_t g, 812 uint8_t b) 813 { 814 815 if (sc->sc_cmcb) { 816 817 sc->sc_cmcb->gcc_set_mapreg(sc->sc_cmcb->gcc_cookie, 818 idx, r, g, b); 819 } 820 return 0; 821 } 822 823 void 824 genfb_cnattach(void) 825 { 826 genfb_cnattach_called = 1; 827 } 828 829 void 830 genfb_disable(void) 831 { 832 genfb_enabled = 0; 833 } 834 835 int 836 genfb_is_console(void) 837 { 838 return genfb_cnattach_called; 839 } 840 841 int 842 genfb_is_enabled(void) 843 { 844 return genfb_enabled; 845 } 846 847 int 848 genfb_borrow(bus_addr_t addr, bus_space_handle_t *hdlp) 849 { 850 struct genfb_softc *sc = genfb_softc; 851 852 if (sc && sc->sc_ops.genfb_borrow) 853 return sc->sc_ops.genfb_borrow(sc, addr, hdlp); 854 return 0; 855 } 856 857 static void 858 genfb_brightness_up(device_t dev) 859 { 860 struct genfb_softc *sc = device_private(dev); 861 862 KASSERT(sc->sc_brightness != NULL && 863 sc->sc_brightness->gpc_upd_parameter != NULL); 864 865 (void)sc->sc_brightness->gpc_upd_parameter( 866 sc->sc_brightness->gpc_cookie, GENFB_BRIGHTNESS_STEP); 867 } 868 869 static void 870 genfb_brightness_down(device_t dev) 871 { 872 struct genfb_softc *sc = device_private(dev); 873 874 KASSERT(sc->sc_brightness != NULL && 875 sc->sc_brightness->gpc_upd_parameter != NULL); 876 877 (void)sc->sc_brightness->gpc_upd_parameter( 878 sc->sc_brightness->gpc_cookie, - GENFB_BRIGHTNESS_STEP); 879 } 880 881 void 882 genfb_enable_polling(device_t dev) 883 { 884 struct genfb_softc *sc = device_private(dev); 885 886 if (sc->sc_console_screen.scr_vd) { 887 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 888 vcons_hard_switch(&sc->sc_console_screen); 889 vcons_enable_polling(&sc->vd); 890 if (sc->sc_ops.genfb_enable_polling) 891 (*sc->sc_ops.genfb_enable_polling)(sc); 892 } 893 } 894 895 void 896 genfb_disable_polling(device_t dev) 897 { 898 struct genfb_softc *sc = device_private(dev); 899 900 if (sc->sc_console_screen.scr_vd) { 901 if (sc->sc_ops.genfb_disable_polling) 902 (*sc->sc_ops.genfb_disable_polling)(sc); 903 vcons_disable_polling(&sc->vd); 904 } 905 } 906 907 #if GENFB_GLYPHCACHE > 0 908 #define GLYPHCACHESIZE ((GENFB_GLYPHCACHE) * 1024 * 1024) 909 910 static inline int 911 attr2idx(long attr) 912 { 913 if ((attr & 0xf0f00ff8) != 0) 914 return -1; 915 916 return (((attr >> 16) & 0x0f) | ((attr >> 20) & 0xf0)); 917 } 918 919 static int 920 genfb_setup_glyphcache(struct genfb_softc *sc, long defattr) 921 { 922 struct rasops_info *ri = &sc->sc_console_screen.scr_ri, 923 *cri = &sc->sc_cache_ri; 924 gc_bucket *b; 925 int i, usedcells = 0, idx, j; 926 927 sc->sc_cache = kmem_alloc(GLYPHCACHESIZE, KM_SLEEP); 928 929 /* 930 * now we build a mutant rasops_info for the cache - same pixel type 931 * and such as the real fb, but only one character per line for 932 * simplicity and locality 933 */ 934 memcpy(cri, ri, sizeof(struct rasops_info)); 935 cri->ri_ops.putchar = sc->sc_putchar; 936 cri->ri_width = ri->ri_font->fontwidth; 937 cri->ri_stride = ri->ri_xscale; 938 cri->ri_bits = sc->sc_cache; 939 cri->ri_hwbits = NULL; 940 cri->ri_origbits = sc->sc_cache; 941 cri->ri_cols = 1; 942 cri->ri_rows = GLYPHCACHESIZE / 943 (cri->ri_stride * cri->ri_font->fontheight); 944 cri->ri_xorigin = 0; 945 cri->ri_yorigin = 0; 946 cri->ri_xscale = ri->ri_xscale; 947 cri->ri_yscale = ri->ri_font->fontheight * ri->ri_xscale; 948 949 printf("size %d %d %d\n", GLYPHCACHESIZE, ri->ri_width, ri->ri_stride); 950 printf("cells: %d\n", cri->ri_rows); 951 sc->sc_nbuckets = uimin(256, cri->ri_rows / 223); 952 sc->sc_buckets = kmem_alloc(sizeof(gc_bucket) * sc->sc_nbuckets, KM_SLEEP); 953 printf("buckets: %d\n", sc->sc_nbuckets); 954 for (i = 0; i < sc->sc_nbuckets; i++) { 955 b = &sc->sc_buckets[i]; 956 b->gb_firstcell = usedcells; 957 b->gb_numcells = uimin(223, cri->ri_rows - usedcells); 958 usedcells += 223; 959 b->gb_usedcells = 0; 960 b->gb_index = -1; 961 for (j = 0; j < 223; j++) b->gb_map[j] = -1; 962 } 963 964 /* initialize the attribute map... */ 965 for (i = 0; i < 256; i++) { 966 sc->sc_attrmap[i] = -1; 967 } 968 969 /* first bucket goes to default attr */ 970 idx = attr2idx(defattr); 971 printf("defattr %08lx idx %x\n", defattr, idx); 972 973 if (idx >= 0) { 974 sc->sc_attrmap[idx] = 0; 975 sc->sc_buckets[0].gb_index = idx; 976 } 977 978 return 0; 979 } 980 981 static void 982 genfb_putchar(void *cookie, int row, int col, u_int c, long attr) 983 { 984 struct rasops_info *ri = cookie; 985 struct vcons_screen *scr = ri->ri_hw; 986 struct genfb_softc *sc = scr->scr_cookie; 987 uint8_t *src, *dst; 988 gc_bucket *b; 989 int i, idx, bi, cell; 990 991 attr &= ~WSATTR_USERMASK; 992 993 idx = attr2idx(attr); 994 if (c < 33 || c > 255 || idx < 0) goto nope; 995 996 /* look for a bucket with the right attribute */ 997 bi = sc->sc_attrmap[idx]; 998 if (bi == -1) { 999 /* nope, see if there's an empty one left */ 1000 bi = 1; 1001 while ((bi < sc->sc_nbuckets) && 1002 (sc->sc_buckets[bi].gb_index != -1)) { 1003 bi++; 1004 } 1005 if (bi < sc->sc_nbuckets) { 1006 /* found one -> grab it */ 1007 sc->sc_attrmap[idx] = bi; 1008 b = &sc->sc_buckets[bi]; 1009 b->gb_index = idx; 1010 b->gb_usedcells = 0; 1011 /* make sure this doesn't get evicted right away */ 1012 b->gb_lastread = time_uptime; 1013 } else { 1014 /* 1015 * still nothing 1016 * steal the least recently read bucket 1017 */ 1018 time_t moo = time_uptime; 1019 int oldest = 1; 1020 1021 for (i = 1; i < sc->sc_nbuckets; i++) { 1022 if (sc->sc_buckets[i].gb_lastread < moo) { 1023 oldest = i; 1024 moo = sc->sc_buckets[i].gb_lastread; 1025 } 1026 } 1027 1028 /* if we end up here all buckets must be in use */ 1029 b = &sc->sc_buckets[oldest]; 1030 sc->sc_attrmap[b->gb_index] = -1; 1031 b->gb_index = idx; 1032 b->gb_usedcells = 0; 1033 sc->sc_attrmap[idx] = oldest; 1034 /* now scrub it */ 1035 for (i = 0; i < 223; i++) 1036 b->gb_map[i] = -1; 1037 /* and set the time stamp */ 1038 b->gb_lastread = time_uptime; 1039 } 1040 } else { 1041 /* found one */ 1042 b = &sc->sc_buckets[bi]; 1043 } 1044 1045 /* see if there's room in the bucket */ 1046 if (b->gb_usedcells >= b->gb_numcells) goto nope; 1047 1048 cell = b->gb_map[c - 33]; 1049 if (cell == -1) { 1050 if (b->gb_usedcells >= b->gb_numcells) 1051 goto nope; 1052 cell = atomic_add_int_nv(&b->gb_usedcells, 1) - 1; 1053 b->gb_map[c - 33] = cell; 1054 cell += b->gb_firstcell; 1055 sc->sc_putchar(&sc->sc_cache_ri, cell, 0, c, attr); 1056 1057 } else 1058 cell += b->gb_firstcell; 1059 1060 src = sc->sc_cache + cell * sc->sc_cache_ri.ri_yscale; 1061 dst = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale; 1062 for (i = 0; i < ri->ri_font->fontheight; i++) { 1063 memcpy(dst, src, ri->ri_xscale); 1064 src += ri->ri_xscale; 1065 dst += ri->ri_stride; 1066 } 1067 b->gb_lastread = time_uptime; 1068 return; 1069 nope: 1070 sc->sc_putchar(cookie, row, col, c, attr); 1071 } 1072 1073 #endif 1074
Indexes created Sun Sep 28 12:09:53 GMT 2025