genfb.c revision 1.81
1 /* $NetBSD: genfb.c,v 1.81 2021/01/27 22:42:53 macallan 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 1.81 2021/01/27 22:42:53 macallan 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_ia(sc->sc_dev, "wsemuldisplaydev", &aa, 381 wsemuldisplaydevprint); 382 383 return 0; 384 } 385 386 static int 387 genfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 388 struct lwp *l) 389 { 390 struct vcons_data *vd = v; 391 struct genfb_softc *sc = vd->cookie; 392 struct wsdisplay_fbinfo *wdf; 393 struct vcons_screen *ms = vd->active; 394 struct wsdisplay_param *param; 395 int new_mode, error, val, ret; 396 397 switch (cmd) { 398 case WSDISPLAYIO_GINFO: 399 if (ms == NULL) 400 return ENODEV; 401 wdf = (void *)data; 402 wdf->height = ms->scr_ri.ri_height; 403 wdf->width = ms->scr_ri.ri_width; 404 wdf->depth = ms->scr_ri.ri_depth; 405 wdf->cmsize = 256; 406 return 0; 407 408 case WSDISPLAYIO_GETCMAP: 409 return genfb_getcmap(sc, 410 (struct wsdisplay_cmap *)data); 411 412 case WSDISPLAYIO_PUTCMAP: 413 return genfb_putcmap(sc, 414 (struct wsdisplay_cmap *)data); 415 416 case WSDISPLAYIO_LINEBYTES: 417 *(u_int *)data = sc->sc_stride; 418 return 0; 419 420 case WSDISPLAYIO_SMODE: 421 new_mode = *(int *)data; 422 423 /* notify the bus backend */ 424 error = 0; 425 if (sc->sc_ops.genfb_ioctl) 426 error = sc->sc_ops.genfb_ioctl(sc, vs, 427 cmd, data, flag, l); 428 if (error && error != EPASSTHROUGH) 429 return error; 430 431 if (new_mode != sc->sc_mode) { 432 sc->sc_mode = new_mode; 433 if (sc->sc_modecb != NULL) 434 sc->sc_modecb->gmc_setmode(sc, 435 sc->sc_mode); 436 if (new_mode == WSDISPLAYIO_MODE_EMUL) { 437 genfb_restore_palette(sc); 438 vcons_redraw_screen(ms); 439 } 440 } 441 return 0; 442 443 case WSDISPLAYIO_SSPLASH: 444 #if defined(SPLASHSCREEN) 445 if(*(int *)data == 1) { 446 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 447 splash_render(&sc->sc_splash, 448 SPLASH_F_CENTER|SPLASH_F_FILL); 449 } else { 450 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 451 genfb_init_palette(sc); 452 } 453 vcons_redraw_screen(ms); 454 return 0; 455 #else 456 return ENODEV; 457 #endif 458 case WSDISPLAYIO_GETPARAM: 459 param = (struct wsdisplay_param *)data; 460 switch (param->param) { 461 case WSDISPLAYIO_PARAM_BRIGHTNESS: 462 if (sc->sc_brightness == NULL) 463 return EPASSTHROUGH; 464 param->min = 0; 465 param->max = 255; 466 return sc->sc_brightness->gpc_get_parameter( 467 sc->sc_brightness->gpc_cookie, 468 ¶m->curval); 469 case WSDISPLAYIO_PARAM_BACKLIGHT: 470 if (sc->sc_backlight == NULL) 471 return EPASSTHROUGH; 472 param->min = 0; 473 param->max = 1; 474 return sc->sc_backlight->gpc_get_parameter( 475 sc->sc_backlight->gpc_cookie, 476 ¶m->curval); 477 } 478 return EPASSTHROUGH; 479 480 case WSDISPLAYIO_SETPARAM: 481 param = (struct wsdisplay_param *)data; 482 switch (param->param) { 483 case WSDISPLAYIO_PARAM_BRIGHTNESS: 484 if (sc->sc_brightness == NULL) 485 return EPASSTHROUGH; 486 val = param->curval; 487 if (val < 0) val = 0; 488 if (val > 255) val = 255; 489 return sc->sc_brightness->gpc_set_parameter( 490 sc->sc_brightness->gpc_cookie, val); 491 case WSDISPLAYIO_PARAM_BACKLIGHT: 492 if (sc->sc_backlight == NULL) 493 return EPASSTHROUGH; 494 val = param->curval; 495 if (val < 0) val = 0; 496 if (val > 1) val = 1; 497 return sc->sc_backlight->gpc_set_parameter( 498 sc->sc_backlight->gpc_cookie, val); 499 } 500 return EPASSTHROUGH; 501 } 502 ret = EPASSTHROUGH; 503 if (sc->sc_ops.genfb_ioctl) 504 ret = sc->sc_ops.genfb_ioctl(sc, vs, cmd, data, flag, l); 505 if (ret != EPASSTHROUGH) 506 return ret; 507 /* 508 * XXX 509 * handle these only if there either is no ioctl() handler or it didn't 510 * know how to deal with them. This allows bus frontends to override 511 * them but still provides fallback implementations 512 */ 513 switch (cmd) { 514 case WSDISPLAYIO_GET_EDID: { 515 struct wsdisplayio_edid_info *d = data; 516 return wsdisplayio_get_edid(sc->sc_dev, d); 517 } 518 519 case WSDISPLAYIO_GET_FBINFO: { 520 struct wsdisplayio_fbinfo *fbi = data; 521 return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); 522 } 523 } 524 return EPASSTHROUGH; 525 } 526 527 static paddr_t 528 genfb_mmap(void *v, void *vs, off_t offset, int prot) 529 { 530 struct vcons_data *vd = v; 531 struct genfb_softc *sc = vd->cookie; 532 533 if (sc->sc_ops.genfb_mmap) 534 return sc->sc_ops.genfb_mmap(sc, vs, offset, prot); 535 536 return -1; 537 } 538 539 static void 540 genfb_pollc(void *v, int on) 541 { 542 struct vcons_data *vd = v; 543 struct genfb_softc *sc = vd->cookie; 544 545 if (sc == NULL) 546 return; 547 548 if (on) 549 genfb_enable_polling(sc->sc_dev); 550 else 551 genfb_disable_polling(sc->sc_dev); 552 } 553 554 static void 555 genfb_init_screen(void *cookie, struct vcons_screen *scr, 556 int existing, long *defattr) 557 { 558 struct genfb_softc *sc = cookie; 559 struct rasops_info *ri = &scr->scr_ri; 560 int wantcols; 561 bool is_bgr, is_swapped; 562 563 ri->ri_depth = sc->sc_depth; 564 ri->ri_width = sc->sc_width; 565 ri->ri_height = sc->sc_height; 566 ri->ri_stride = sc->sc_stride; 567 ri->ri_flg = RI_CENTER; 568 if (sc->sc_want_clear) 569 ri->ri_flg |= RI_FULLCLEAR; 570 571 scr->scr_flags |= VCONS_LOADFONT; 572 573 if (sc->sc_shadowfb != NULL) { 574 ri->ri_hwbits = (char *)sc->sc_fbaddr; 575 ri->ri_bits = (char *)sc->sc_shadowfb; 576 } else { 577 ri->ri_bits = (char *)sc->sc_fbaddr; 578 scr->scr_flags |= VCONS_DONT_READ; 579 } 580 581 if (existing && sc->sc_want_clear) 582 ri->ri_flg |= RI_CLEAR; 583 584 switch (ri->ri_depth) { 585 case 32: 586 case 24: 587 ri->ri_rnum = ri->ri_gnum = ri->ri_bnum = 8; 588 ri->ri_flg |= RI_ENABLE_ALPHA; 589 590 is_bgr = false; 591 prop_dictionary_get_bool(device_properties(sc->sc_dev), 592 "is_bgr", &is_bgr); 593 594 is_swapped = false; 595 prop_dictionary_get_bool(device_properties(sc->sc_dev), 596 "is_swapped", &is_swapped); 597 598 if (is_bgr) { 599 /* someone requested BGR */ 600 ri->ri_rpos = 0; 601 ri->ri_gpos = 8; 602 ri->ri_bpos = 16; 603 } else if (is_swapped) { 604 /* byte-swapped, must be 32 bpp */ 605 KASSERT(ri->ri_depth == 32); 606 ri->ri_rpos = 8; 607 ri->ri_gpos = 16; 608 ri->ri_bpos = 24; 609 } else { 610 /* assume RGB */ 611 ri->ri_rpos = 16; 612 ri->ri_gpos = 8; 613 ri->ri_bpos = 0; 614 } 615 break; 616 617 case 16: 618 case 15: 619 ri->ri_flg |= RI_ENABLE_ALPHA; 620 break; 621 622 case 8: 623 if (sc->sc_cmcb != NULL) 624 ri->ri_flg |= RI_ENABLE_ALPHA | RI_8BIT_IS_RGB; 625 break; 626 627 case 2: 628 ri->ri_flg |= RI_ENABLE_ALPHA; 629 break; 630 631 default: 632 break; 633 } 634 635 wantcols = genfb_calc_cols(sc); 636 637 rasops_init(ri, 0, wantcols); 638 ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_UNDERLINE | 639 WSSCREEN_RESIZE; 640 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 641 sc->sc_width / ri->ri_font->fontwidth); 642 643 ri->ri_hw = scr; 644 #if GENFB_GLYPHCACHE > 0 645 sc->sc_putchar = ri->ri_ops.putchar; 646 ri->ri_ops.putchar = genfb_putchar; 647 #endif 648 #ifdef GENFB_DISABLE_TEXT 649 if (scr == &sc->sc_console_screen && !DISABLESPLASH) 650 SCREEN_DISABLE_DRAWING(&sc->sc_console_screen); 651 #endif 652 } 653 654 /* Returns the width of the display in millimeters, or 0 if not known. */ 655 static int 656 genfb_calc_hsize(struct genfb_softc *sc) 657 { 658 device_t dev = sc->sc_dev; 659 prop_dictionary_t dict = device_properties(dev); 660 prop_data_t edid_data; 661 struct edid_info *edid; 662 const char *edid_ptr; 663 int hsize; 664 665 edid_data = prop_dictionary_get(dict, "EDID"); 666 if (edid_data == NULL || prop_data_size(edid_data) < 128) 667 return 0; 668 669 edid = kmem_alloc(sizeof(*edid), KM_SLEEP); 670 671 edid_ptr = prop_data_value(edid_data); 672 if (edid_parse(__UNCONST(edid_ptr), edid) == 0) 673 hsize = (int)edid->edid_max_hsize * 10; 674 else 675 hsize = 0; 676 677 kmem_free(edid, sizeof(*edid)); 678 679 return hsize; 680 } 681 682 /* Return the minimum number of character columns based on DPI */ 683 static int 684 genfb_calc_cols(struct genfb_softc *sc) 685 { 686 const int hsize = genfb_calc_hsize(sc); 687 688 return MAX(RASOPS_DEFAULT_WIDTH, hsize / GENFB_CHAR_WIDTH_MM); 689 } 690 691 static int 692 genfb_putcmap(struct genfb_softc *sc, struct wsdisplay_cmap *cm) 693 { 694 u_char *r, *g, *b; 695 u_int index = cm->index; 696 u_int count = cm->count; 697 int i, error; 698 u_char rbuf[256], gbuf[256], bbuf[256]; 699 700 #ifdef GENFB_DEBUG 701 aprint_debug("putcmap: %d %d\n",index, count); 702 #endif 703 if (index >= 256 || count > 256 || index + count > 256) 704 return EINVAL; 705 706 error = copyin(cm->red, &rbuf[index], count); 707 if (error) 708 return error; 709 error = copyin(cm->green, &gbuf[index], count); 710 if (error) 711 return error; 712 error = copyin(cm->blue, &bbuf[index], count); 713 if (error) 714 return error; 715 716 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 717 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 718 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 719 720 r = &sc->sc_cmap_red[index]; 721 g = &sc->sc_cmap_green[index]; 722 b = &sc->sc_cmap_blue[index]; 723 724 for (i = 0; i < count; i++) { 725 genfb_putpalreg(sc, index, *r, *g, *b); 726 index++; 727 r++, g++, b++; 728 } 729 return 0; 730 } 731 732 static int 733 genfb_getcmap(struct genfb_softc *sc, struct wsdisplay_cmap *cm) 734 { 735 u_int index = cm->index; 736 u_int count = cm->count; 737 int error; 738 739 if (index >= 256 || count > 256 || index + count > 256) 740 return EINVAL; 741 742 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 743 if (error) 744 return error; 745 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 746 if (error) 747 return error; 748 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 749 if (error) 750 return error; 751 752 return 0; 753 } 754 755 void 756 genfb_restore_palette(struct genfb_softc *sc) 757 { 758 int i; 759 760 if (sc->sc_depth <= 8) { 761 for (i = 0; i < (1 << sc->sc_depth); i++) { 762 genfb_putpalreg(sc, i, sc->sc_cmap_red[i], 763 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 764 } 765 } 766 } 767 768 static void 769 genfb_init_palette(struct genfb_softc *sc) 770 { 771 int i, j, tmp; 772 773 if (sc->sc_depth == 8) { 774 /* generate an r3g3b2 colour map */ 775 for (i = 0; i < 256; i++) { 776 tmp = i & 0xe0; 777 /* 778 * replicate bits so 0xe0 maps to a red value of 0xff 779 * in order to make white look actually white 780 */ 781 tmp |= (tmp >> 3) | (tmp >> 6); 782 sc->sc_cmap_red[i] = tmp; 783 784 tmp = (i & 0x1c) << 3; 785 tmp |= (tmp >> 3) | (tmp >> 6); 786 sc->sc_cmap_green[i] = tmp; 787 788 tmp = (i & 0x03) << 6; 789 tmp |= tmp >> 2; 790 tmp |= tmp >> 4; 791 sc->sc_cmap_blue[i] = tmp; 792 793 genfb_putpalreg(sc, i, sc->sc_cmap_red[i], 794 sc->sc_cmap_green[i], 795 sc->sc_cmap_blue[i]); 796 } 797 } else { 798 /* steal rasops' ANSI cmap */ 799 j = 0; 800 for (i = 0; i < 256; i++) { 801 sc->sc_cmap_red[i] = rasops_cmap[j]; 802 sc->sc_cmap_green[i] = rasops_cmap[j + 1]; 803 sc->sc_cmap_blue[i] = rasops_cmap[j + 2]; 804 j += 3; 805 } 806 } 807 } 808 809 static int 810 genfb_putpalreg(struct genfb_softc *sc, uint8_t idx, uint8_t r, uint8_t g, 811 uint8_t b) 812 { 813 814 if (sc->sc_cmcb) { 815 816 sc->sc_cmcb->gcc_set_mapreg(sc->sc_cmcb->gcc_cookie, 817 idx, r, g, b); 818 } 819 return 0; 820 } 821 822 void 823 genfb_cnattach(void) 824 { 825 genfb_cnattach_called = 1; 826 } 827 828 void 829 genfb_disable(void) 830 { 831 genfb_enabled = 0; 832 } 833 834 int 835 genfb_is_console(void) 836 { 837 return genfb_cnattach_called; 838 } 839 840 int 841 genfb_is_enabled(void) 842 { 843 return genfb_enabled; 844 } 845 846 int 847 genfb_borrow(bus_addr_t addr, bus_space_handle_t *hdlp) 848 { 849 struct genfb_softc *sc = genfb_softc; 850 851 if (sc && sc->sc_ops.genfb_borrow) 852 return sc->sc_ops.genfb_borrow(sc, addr, hdlp); 853 return 0; 854 } 855 856 static void 857 genfb_brightness_up(device_t dev) 858 { 859 struct genfb_softc *sc = device_private(dev); 860 861 KASSERT(sc->sc_brightness != NULL && 862 sc->sc_brightness->gpc_upd_parameter != NULL); 863 864 (void)sc->sc_brightness->gpc_upd_parameter( 865 sc->sc_brightness->gpc_cookie, GENFB_BRIGHTNESS_STEP); 866 } 867 868 static void 869 genfb_brightness_down(device_t dev) 870 { 871 struct genfb_softc *sc = device_private(dev); 872 873 KASSERT(sc->sc_brightness != NULL && 874 sc->sc_brightness->gpc_upd_parameter != NULL); 875 876 (void)sc->sc_brightness->gpc_upd_parameter( 877 sc->sc_brightness->gpc_cookie, - GENFB_BRIGHTNESS_STEP); 878 } 879 880 void 881 genfb_enable_polling(device_t dev) 882 { 883 struct genfb_softc *sc = device_private(dev); 884 885 if (sc->sc_console_screen.scr_vd) { 886 SCREEN_ENABLE_DRAWING(&sc->sc_console_screen); 887 vcons_hard_switch(&sc->sc_console_screen); 888 vcons_enable_polling(&sc->vd); 889 if (sc->sc_ops.genfb_enable_polling) 890 (*sc->sc_ops.genfb_enable_polling)(sc); 891 } 892 } 893 894 void 895 genfb_disable_polling(device_t dev) 896 { 897 struct genfb_softc *sc = device_private(dev); 898 899 if (sc->sc_console_screen.scr_vd) { 900 if (sc->sc_ops.genfb_disable_polling) 901 (*sc->sc_ops.genfb_disable_polling)(sc); 902 vcons_disable_polling(&sc->vd); 903 } 904 } 905 906 #if GENFB_GLYPHCACHE > 0 907 #define GLYPHCACHESIZE ((GENFB_GLYPHCACHE) * 1024 * 1024) 908 909 static inline int 910 attr2idx(long attr) 911 { 912 if ((attr & 0xf0f00ff8) != 0) 913 return -1; 914 915 return (((attr >> 16) & 0x0f) | ((attr >> 20) & 0xf0)); 916 } 917 918 static int 919 genfb_setup_glyphcache(struct genfb_softc *sc, long defattr) 920 { 921 struct rasops_info *ri = &sc->sc_console_screen.scr_ri, 922 *cri = &sc->sc_cache_ri; 923 gc_bucket *b; 924 int i, usedcells = 0, idx, j; 925 926 sc->sc_cache = kmem_alloc(GLYPHCACHESIZE, KM_SLEEP); 927 928 /* 929 * now we build a mutant rasops_info for the cache - same pixel type 930 * and such as the real fb, but only one character per line for 931 * simplicity and locality 932 */ 933 memcpy(cri, ri, sizeof(struct rasops_info)); 934 cri->ri_ops.putchar = sc->sc_putchar; 935 cri->ri_width = ri->ri_font->fontwidth; 936 cri->ri_stride = ri->ri_xscale; 937 cri->ri_bits = sc->sc_cache; 938 cri->ri_hwbits = NULL; 939 cri->ri_origbits = sc->sc_cache; 940 cri->ri_cols = 1; 941 cri->ri_rows = GLYPHCACHESIZE / 942 (cri->ri_stride * cri->ri_font->fontheight); 943 cri->ri_xorigin = 0; 944 cri->ri_yorigin = 0; 945 cri->ri_xscale = ri->ri_xscale; 946 cri->ri_yscale = ri->ri_font->fontheight * ri->ri_xscale; 947 948 printf("size %d %d %d\n", GLYPHCACHESIZE, ri->ri_width, ri->ri_stride); 949 printf("cells: %d\n", cri->ri_rows); 950 sc->sc_nbuckets = uimin(256, cri->ri_rows / 223); 951 sc->sc_buckets = kmem_alloc(sizeof(gc_bucket) * sc->sc_nbuckets, KM_SLEEP); 952 printf("buckets: %d\n", sc->sc_nbuckets); 953 for (i = 0; i < sc->sc_nbuckets; i++) { 954 b = &sc->sc_buckets[i]; 955 b->gb_firstcell = usedcells; 956 b->gb_numcells = uimin(223, cri->ri_rows - usedcells); 957 usedcells += 223; 958 b->gb_usedcells = 0; 959 b->gb_index = -1; 960 for (j = 0; j < 223; j++) b->gb_map[j] = -1; 961 } 962 963 /* initialize the attribute map... */ 964 for (i = 0; i < 256; i++) { 965 sc->sc_attrmap[i] = -1; 966 } 967 968 /* first bucket goes to default attr */ 969 idx = attr2idx(defattr); 970 printf("defattr %08lx idx %x\n", defattr, idx); 971 972 if (idx >= 0) { 973 sc->sc_attrmap[idx] = 0; 974 sc->sc_buckets[0].gb_index = idx; 975 } 976 977 return 0; 978 } 979 980 static void 981 genfb_putchar(void *cookie, int row, int col, u_int c, long attr) 982 { 983 struct rasops_info *ri = cookie; 984 struct vcons_screen *scr = ri->ri_hw; 985 struct genfb_softc *sc = scr->scr_cookie; 986 uint8_t *src, *dst; 987 gc_bucket *b; 988 int i, idx, bi, cell; 989 990 attr &= ~WSATTR_USERMASK; 991 992 idx = attr2idx(attr); 993 if (c < 33 || c > 255 || idx < 0) goto nope; 994 995 /* look for a bucket with the right attribute */ 996 bi = sc->sc_attrmap[idx]; 997 if (bi == -1) { 998 /* nope, see if there's an empty one left */ 999 bi = 1; 1000 while ((bi < sc->sc_nbuckets) && 1001 (sc->sc_buckets[bi].gb_index != -1)) { 1002 bi++; 1003 } 1004 if (bi < sc->sc_nbuckets) { 1005 /* found one -> grab it */ 1006 sc->sc_attrmap[idx] = bi; 1007 b = &sc->sc_buckets[bi]; 1008 b->gb_index = idx; 1009 b->gb_usedcells = 0; 1010 /* make sure this doesn't get evicted right away */ 1011 b->gb_lastread = time_uptime; 1012 } else { 1013 /* 1014 * still nothing 1015 * steal the least recently read bucket 1016 */ 1017 time_t moo = time_uptime; 1018 int oldest = 1; 1019 1020 for (i = 1; i < sc->sc_nbuckets; i++) { 1021 if (sc->sc_buckets[i].gb_lastread < moo) { 1022 oldest = i; 1023 moo = sc->sc_buckets[i].gb_lastread; 1024 } 1025 } 1026 1027 /* if we end up here all buckets must be in use */ 1028 b = &sc->sc_buckets[oldest]; 1029 sc->sc_attrmap[b->gb_index] = -1; 1030 b->gb_index = idx; 1031 b->gb_usedcells = 0; 1032 sc->sc_attrmap[idx] = oldest; 1033 /* now scrub it */ 1034 for (i = 0; i < 223; i++) 1035 b->gb_map[i] = -1; 1036 /* and set the time stamp */ 1037 b->gb_lastread = time_uptime; 1038 } 1039 } else { 1040 /* found one */ 1041 b = &sc->sc_buckets[bi]; 1042 } 1043 1044 /* see if there's room in the bucket */ 1045 if (b->gb_usedcells >= b->gb_numcells) goto nope; 1046 1047 cell = b->gb_map[c - 33]; 1048 if (cell == -1) { 1049 if (b->gb_usedcells >= b->gb_numcells) 1050 goto nope; 1051 cell = atomic_add_int_nv(&b->gb_usedcells, 1) - 1; 1052 b->gb_map[c - 33] = cell; 1053 cell += b->gb_firstcell; 1054 sc->sc_putchar(&sc->sc_cache_ri, cell, 0, c, attr); 1055 1056 } else 1057 cell += b->gb_firstcell; 1058 1059 src = sc->sc_cache + cell * sc->sc_cache_ri.ri_yscale; 1060 dst = ri->ri_bits + row * ri->ri_yscale + col * ri->ri_xscale; 1061 for (i = 0; i < ri->ri_font->fontheight; i++) { 1062 memcpy(dst, src, ri->ri_xscale); 1063 src += ri->ri_xscale; 1064 dst += ri->ri_stride; 1065 } 1066 b->gb_lastread = time_uptime; 1067 return; 1068 nope: 1069 sc->sc_putchar(cookie, row, col, c, attr); 1070 } 1071 1072 #endif 1073
Indexes created Fri Sep 26 20:09:58 GMT 2025