voyagerfb.c revision 1.9
1 /* $NetBSD: voyagerfb.c,v 1.9 2011/11/08 07:05:06 macallan Exp $ */ 2 3 /* 4 * Copyright (c) 2009 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 AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * A console driver for Silicon Motion SM502 / Voyager GX graphics controllers 30 * tested on GDIUM only so far 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: voyagerfb.c,v 1.9 2011/11/08 07:05:06 macallan Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/device.h> 40 #include <sys/malloc.h> 41 #include <sys/lwp.h> 42 #include <sys/kauth.h> 43 44 #include <dev/videomode/videomode.h> 45 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pcireg.h> 48 #include <dev/pci/pcidevs.h> 49 #include <dev/pci/pciio.h> 50 #include <dev/ic/sm502reg.h> 51 52 #include <dev/wscons/wsdisplayvar.h> 53 #include <dev/wscons/wsconsio.h> 54 #include <dev/wsfont/wsfont.h> 55 #include <dev/rasops/rasops.h> 56 #include <dev/wscons/wsdisplay_vconsvar.h> 57 #include <dev/pci/wsdisplay_pci.h> 58 59 #include <dev/i2c/i2cvar.h> 60 #include <dev/pci/voyagervar.h> 61 62 #ifdef VOYAGERFB_DEBUG 63 #define DPRINTF aprint_error 64 #else 65 #define DPRINTF while (0) printf 66 #endif 67 68 /* there are probably gdium-specific */ 69 #define GPIO_BACKLIGHT 0x20000000 70 71 struct voyagerfb_softc { 72 device_t sc_dev; 73 74 pci_chipset_tag_t sc_pc; 75 pcitag_t sc_pcitag; 76 bus_space_tag_t sc_memt; 77 78 bus_space_handle_t sc_fbh; 79 bus_space_handle_t sc_regh; 80 bus_addr_t sc_fb, sc_reg; 81 bus_size_t sc_fbsize, sc_regsize; 82 83 int sc_width, sc_height, sc_depth, sc_stride; 84 int sc_locked; 85 void *sc_fbaddr; 86 struct vcons_screen sc_console_screen; 87 struct wsscreen_descr sc_defaultscreen_descr; 88 const struct wsscreen_descr *sc_screens[1]; 89 struct wsscreen_list sc_screenlist; 90 struct vcons_data vd; 91 uint8_t *sc_dataport; 92 int sc_mode; 93 int sc_bl_on, sc_bl_level; 94 void *sc_gpio_cookie; 95 96 /* cursor stuff */ 97 int sc_cur_x; 98 int sc_cur_y; 99 int sc_hot_x; 100 int sc_hot_y; 101 uint32_t sc_cursor_addr; 102 uint32_t *sc_cursor; 103 104 /* colour map */ 105 u_char sc_cmap_red[256]; 106 u_char sc_cmap_green[256]; 107 u_char sc_cmap_blue[256]; 108 }; 109 110 static int voyagerfb_match(device_t, cfdata_t, void *); 111 static void voyagerfb_attach(device_t, device_t, void *); 112 113 CFATTACH_DECL_NEW(voyagerfb, sizeof(struct voyagerfb_softc), 114 voyagerfb_match, voyagerfb_attach, NULL, NULL); 115 116 extern const u_char rasops_cmap[768]; 117 118 static int voyagerfb_ioctl(void *, void *, u_long, void *, int, 119 struct lwp *); 120 static paddr_t voyagerfb_mmap(void *, void *, off_t, int); 121 static void voyagerfb_init_screen(void *, struct vcons_screen *, int, 122 long *); 123 124 static int voyagerfb_putcmap(struct voyagerfb_softc *, 125 struct wsdisplay_cmap *); 126 static int voyagerfb_getcmap(struct voyagerfb_softc *, 127 struct wsdisplay_cmap *); 128 static void voyagerfb_restore_palette(struct voyagerfb_softc *); 129 static int voyagerfb_putpalreg(struct voyagerfb_softc *, int, uint8_t, 130 uint8_t, uint8_t); 131 132 static void voyagerfb_init(struct voyagerfb_softc *); 133 134 static void voyagerfb_rectfill(struct voyagerfb_softc *, int, int, int, int, 135 uint32_t); 136 static void voyagerfb_bitblt(struct voyagerfb_softc *, int, int, int, int, 137 int, int, int); 138 139 static void voyagerfb_cursor(void *, int, int, int); 140 static void voyagerfb_putchar(void *, int, int, u_int, long); 141 static void voyagerfb_copycols(void *, int, int, int, int); 142 static void voyagerfb_erasecols(void *, int, int, int, long); 143 static void voyagerfb_copyrows(void *, int, int, int); 144 static void voyagerfb_eraserows(void *, int, int, long); 145 146 static int voyagerfb_set_curpos(struct voyagerfb_softc *, int, int); 147 static int voyagerfb_gcursor(struct voyagerfb_softc *, struct wsdisplay_cursor *); 148 static int voyagerfb_scursor(struct voyagerfb_softc *, struct wsdisplay_cursor *); 149 150 struct wsdisplay_accessops voyagerfb_accessops = { 151 voyagerfb_ioctl, 152 voyagerfb_mmap, 153 NULL, /* alloc_screen */ 154 NULL, /* free_screen */ 155 NULL, /* show_screen */ 156 NULL, /* load_font */ 157 NULL, /* pollc */ 158 NULL /* scroll */ 159 }; 160 161 static void voyagerfb_setup_backlight(struct voyagerfb_softc *); 162 static void voyagerfb_brightness_up(device_t); 163 static void voyagerfb_brightness_down(device_t); 164 /* set backlight level */ 165 static void voyagerfb_set_backlight(struct voyagerfb_softc *, int); 166 /* turn backlight on and off without messing with the level */ 167 static void voyagerfb_switch_backlight(struct voyagerfb_softc *, int); 168 169 /* wait for FIFO empty so we can feed it another command */ 170 static inline void 171 voyagerfb_ready(struct voyagerfb_softc *sc) 172 { 173 do {} while ((bus_space_read_4(sc->sc_memt, sc->sc_regh, 174 SM502_SYSTEM_CTRL) & SM502_SYSCTL_FIFO_EMPTY) == 0); 175 } 176 177 /* wait for the drawing engine to be idle */ 178 static inline void 179 voyagerfb_wait(struct voyagerfb_softc *sc) 180 { 181 do {} while ((bus_space_read_4(sc->sc_memt, sc->sc_regh, 182 SM502_SYSTEM_CTRL) & SM502_SYSCTL_ENGINE_BUSY) != 0); 183 } 184 185 static int 186 voyagerfb_match(device_t parent, cfdata_t match, void *aux) 187 { 188 struct voyager_attach_args *vaa = (struct voyager_attach_args *)aux; 189 190 if (strcmp(vaa->vaa_name, "voyagerfb") == 0) return 100; 191 return 0; 192 } 193 194 static void 195 voyagerfb_attach(device_t parent, device_t self, void *aux) 196 { 197 struct voyagerfb_softc *sc = device_private(self); 198 struct voyager_attach_args *vaa = aux; 199 struct rasops_info *ri; 200 struct wsemuldisplaydev_attach_args aa; 201 prop_dictionary_t dict; 202 unsigned long defattr; 203 uint32_t reg; 204 bool is_console; 205 int i, j; 206 207 sc->sc_pc = vaa->vaa_pc; 208 sc->sc_pcitag = vaa->vaa_pcitag; 209 sc->sc_memt = vaa->vaa_tag; 210 sc->sc_dev = self; 211 212 aprint_normal("\n"); 213 214 dict = device_properties(self); 215 prop_dictionary_get_bool(dict, "is_console", &is_console); 216 217 sc->sc_fb = vaa->vaa_mem_pa; 218 sc->sc_fbh = vaa->vaa_memh; 219 sc->sc_fbsize = 16 * 1024 * 1024; 220 sc->sc_fbaddr = bus_space_vaddr(sc->sc_memt, sc->sc_fbh); 221 222 sc->sc_reg = vaa->vaa_reg_pa; 223 sc->sc_regh = vaa->vaa_regh; 224 sc->sc_regsize = 2 * 1024 * 1024; 225 sc->sc_dataport = bus_space_vaddr(sc->sc_memt, sc->sc_regh); 226 sc->sc_dataport += SM502_DATAPORT; 227 228 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, SM502_PANEL_DISP_CTRL); 229 switch (reg & SM502_PDC_DEPTH_MASK) { 230 case SM502_PDC_8BIT: 231 sc->sc_depth = 8; 232 break; 233 case SM502_PDC_16BIT: 234 sc->sc_depth = 16; 235 break; 236 case SM502_PDC_32BIT: 237 sc->sc_depth = 24; 238 break; 239 default: 240 panic("%s: unsupported depth", device_xname(self)); 241 } 242 sc->sc_stride = (bus_space_read_4(sc->sc_memt, sc->sc_regh, 243 SM502_PANEL_FB_OFFSET) & SM502_FBA_WIN_STRIDE_MASK) >> 16; 244 sc->sc_width = (bus_space_read_4(sc->sc_memt, sc->sc_regh, 245 SM502_PANEL_FB_WIDTH) & SM502_FBW_WIN_WIDTH_MASK) >> 16; 246 sc->sc_height = (bus_space_read_4(sc->sc_memt, sc->sc_regh, 247 SM502_PANEL_FB_HEIGHT) & SM502_FBH_WIN_HEIGHT_MASK) >> 16; 248 249 printf("%s: %d x %d, %d bit, stride %d\n", device_xname(self), 250 sc->sc_width, sc->sc_height, sc->sc_depth, sc->sc_stride); 251 /* 252 * XXX yeah, casting the fb address to uint32_t is formally wrong 253 * but as far as I know there are no SM502 with 64bit BARs 254 */ 255 aprint_normal("%s: %d MB aperture at 0x%08x\n", device_xname(self), 256 (int)(sc->sc_fbsize >> 20), (uint32_t)sc->sc_fb); 257 258 sc->sc_defaultscreen_descr = (struct wsscreen_descr){ 259 "default", 260 0, 0, 261 NULL, 262 8, 16, 263 WSSCREEN_WSCOLORS | WSSCREEN_HILIT, 264 NULL 265 }; 266 sc->sc_screens[0] = &sc->sc_defaultscreen_descr; 267 sc->sc_screenlist = (struct wsscreen_list){1, sc->sc_screens}; 268 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 269 sc->sc_locked = 0; 270 271 vcons_init(&sc->vd, sc, &sc->sc_defaultscreen_descr, 272 &voyagerfb_accessops); 273 sc->vd.init_screen = voyagerfb_init_screen; 274 275 /* backlight control */ 276 sc->sc_gpio_cookie = device_private(parent); 277 voyagerfb_setup_backlight(sc); 278 279 /* init engine here */ 280 sc->sc_depth = 8; 281 voyagerfb_init(sc); 282 283 ri = &sc->sc_console_screen.scr_ri; 284 285 if (is_console) { 286 vcons_init_screen(&sc->vd, &sc->sc_console_screen, 1, 287 &defattr); 288 sc->sc_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 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 wsdisplay_cnattach(&sc->sc_defaultscreen_descr, ri, 0, 0, 295 defattr); 296 } else { 297 /* 298 * since we're not the console we can postpone the rest 299 * until someone actually allocates a screen for us 300 */ 301 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 302 } 303 304 j = 0; 305 if (sc->sc_depth <= 8) { 306 for (i = 0; i < (1 << sc->sc_depth); i++) { 307 308 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 voyagerfb_putpalreg(sc, i, rasops_cmap[j], 312 rasops_cmap[j + 1], rasops_cmap[j + 2]); 313 j += 3; 314 } 315 } 316 317 voyagerfb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height, 318 ri->ri_devcmap[(defattr >> 16) & 0xff]); 319 320 if (is_console) 321 vcons_replay_msgbuf(&sc->sc_console_screen); 322 323 aa.console = is_console; 324 aa.scrdata = &sc->sc_screenlist; 325 aa.accessops = &voyagerfb_accessops; 326 aa.accesscookie = &sc->vd; 327 328 config_found(sc->sc_dev, &aa, wsemuldisplaydevprint); 329 } 330 331 static int 332 voyagerfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 333 struct lwp *l) 334 { 335 struct vcons_data *vd = v; 336 struct voyagerfb_softc *sc = vd->cookie; 337 struct wsdisplay_fbinfo *wdf; 338 struct vcons_screen *ms = vd->active; 339 struct wsdisplay_param *param; 340 341 switch (cmd) { 342 case WSDISPLAYIO_GTYPE: 343 *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; 344 return 0; 345 346 /* PCI config read/write passthrough. */ 347 case PCI_IOC_CFGREAD: 348 case PCI_IOC_CFGWRITE: 349 return pci_devioctl(sc->sc_pc, sc->sc_pcitag, 350 cmd, data, flag, l); 351 352 case WSDISPLAYIO_GET_BUSID: 353 return wsdisplayio_busid_pci(device_parent(sc->sc_dev), 354 sc->sc_pc, sc->sc_pcitag, data); 355 356 case WSDISPLAYIO_GINFO: 357 if (ms == NULL) 358 return ENODEV; 359 wdf = (void *)data; 360 wdf->height = ms->scr_ri.ri_height; 361 wdf->width = ms->scr_ri.ri_width; 362 wdf->depth = 32; 363 wdf->cmsize = 256; 364 return 0; 365 366 case WSDISPLAYIO_GETCMAP: 367 return voyagerfb_getcmap(sc, 368 (struct wsdisplay_cmap *)data); 369 370 case WSDISPLAYIO_PUTCMAP: 371 return voyagerfb_putcmap(sc, 372 (struct wsdisplay_cmap *)data); 373 374 case WSDISPLAYIO_LINEBYTES: 375 *(u_int *)data = sc->sc_stride; 376 return 0; 377 378 case WSDISPLAYIO_SMODE: { 379 int new_mode = *(int*)data; 380 if (new_mode != sc->sc_mode) { 381 sc->sc_mode = new_mode; 382 if(new_mode == WSDISPLAYIO_MODE_EMUL) { 383 sc->sc_depth = 8; 384 voyagerfb_init(sc); 385 voyagerfb_restore_palette(sc); 386 vcons_redraw_screen(ms); 387 } else { 388 sc->sc_depth = 32; 389 voyagerfb_init(sc); 390 } 391 } 392 } 393 return 0; 394 395 case WSDISPLAYIO_GVIDEO: 396 *(int *)data = sc->sc_bl_on ? WSDISPLAYIO_VIDEO_ON : 397 WSDISPLAYIO_VIDEO_OFF; 398 return 0; 399 400 case WSDISPLAYIO_SVIDEO: { 401 int new_bl = *(int *)data; 402 403 voyagerfb_switch_backlight(sc, new_bl); 404 } 405 return 0; 406 407 case WSDISPLAYIO_GETPARAM: 408 param = (struct wsdisplay_param *)data; 409 switch (param->param) { 410 case WSDISPLAYIO_PARAM_BRIGHTNESS: 411 param->min = 0; 412 param->max = 255; 413 param->curval = sc->sc_bl_level; 414 return 0; 415 case WSDISPLAYIO_PARAM_BACKLIGHT: 416 param->min = 0; 417 param->max = 1; 418 param->curval = sc->sc_bl_on; 419 return 0; 420 } 421 return EPASSTHROUGH; 422 423 case WSDISPLAYIO_SETPARAM: 424 param = (struct wsdisplay_param *)data; 425 switch (param->param) { 426 case WSDISPLAYIO_PARAM_BRIGHTNESS: 427 voyagerfb_set_backlight(sc, param->curval); 428 return 0; 429 case WSDISPLAYIO_PARAM_BACKLIGHT: 430 voyagerfb_switch_backlight(sc, param->curval); 431 return 0; 432 } 433 return EPASSTHROUGH; 434 435 case WSDISPLAYIO_GCURPOS: 436 { 437 struct wsdisplay_curpos *pos; 438 439 pos = (struct wsdisplay_curpos *)data; 440 pos->x = sc->sc_cur_x; 441 pos->y = sc->sc_cur_y; 442 } 443 return 0; 444 445 case WSDISPLAYIO_SCURPOS: 446 { 447 struct wsdisplay_curpos *pos; 448 449 pos = (struct wsdisplay_curpos *)data; 450 voyagerfb_set_curpos(sc, pos->x, pos->y); 451 } 452 return 0; 453 454 case WSDISPLAYIO_GCURMAX: 455 { 456 struct wsdisplay_curpos *pos; 457 458 pos = (struct wsdisplay_curpos *)data; 459 pos->x = 64; 460 pos->y = 64; 461 } 462 return 0; 463 464 case WSDISPLAYIO_GCURSOR: 465 { 466 struct wsdisplay_cursor *cu; 467 468 cu = (struct wsdisplay_cursor *)data; 469 return voyagerfb_gcursor(sc, cu); 470 } 471 472 case WSDISPLAYIO_SCURSOR: 473 { 474 struct wsdisplay_cursor *cu; 475 476 cu = (struct wsdisplay_cursor *)data; 477 return voyagerfb_scursor(sc, cu); 478 } 479 } 480 return EPASSTHROUGH; 481 } 482 483 static paddr_t 484 voyagerfb_mmap(void *v, void *vs, off_t offset, int prot) 485 { 486 struct vcons_data *vd = v; 487 struct voyagerfb_softc *sc = vd->cookie; 488 paddr_t pa; 489 490 /* 'regular' framebuffer mmap()ing */ 491 if (offset < sc->sc_fbsize) { 492 pa = bus_space_mmap(sc->sc_memt, sc->sc_fb + offset, 0, prot, 493 BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE); 494 return pa; 495 } 496 497 /* 498 * restrict all other mappings to processes with superuser privileges 499 * or the kernel itself 500 */ 501 if (kauth_authorize_generic(kauth_cred_get(), KAUTH_GENERIC_ISSUSER, 502 NULL) != 0) { 503 aprint_normal("%s: mmap() rejected.\n", 504 device_xname(sc->sc_dev)); 505 return -1; 506 } 507 508 if ((offset >= sc->sc_fb) && (offset < (sc->sc_fb + sc->sc_fbsize))) { 509 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 510 BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE); 511 return pa; 512 } 513 514 if ((offset >= sc->sc_reg) && 515 (offset < (sc->sc_reg + sc->sc_regsize))) { 516 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 0); 517 return pa; 518 } 519 520 return -1; 521 } 522 523 static void 524 voyagerfb_init_screen(void *cookie, struct vcons_screen *scr, 525 int existing, long *defattr) 526 { 527 struct voyagerfb_softc *sc = cookie; 528 struct rasops_info *ri = &scr->scr_ri; 529 530 ri->ri_depth = sc->sc_depth; 531 ri->ri_width = sc->sc_width; 532 ri->ri_height = sc->sc_height; 533 ri->ri_stride = sc->sc_stride; 534 ri->ri_flg = RI_CENTER | RI_FULLCLEAR; 535 536 ri->ri_bits = (char *)sc->sc_fbaddr; 537 538 if (existing) { 539 ri->ri_flg |= RI_CLEAR; 540 } 541 542 rasops_init(ri, sc->sc_height / 8, sc->sc_width / 8); 543 ri->ri_caps = WSSCREEN_WSCOLORS; 544 545 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 546 sc->sc_width / ri->ri_font->fontwidth); 547 548 ri->ri_hw = scr; 549 ri->ri_ops.copyrows = voyagerfb_copyrows; 550 ri->ri_ops.copycols = voyagerfb_copycols; 551 ri->ri_ops.eraserows = voyagerfb_eraserows; 552 ri->ri_ops.erasecols = voyagerfb_erasecols; 553 ri->ri_ops.cursor = voyagerfb_cursor; 554 ri->ri_ops.putchar = voyagerfb_putchar; 555 } 556 557 static int 558 voyagerfb_putcmap(struct voyagerfb_softc *sc, struct wsdisplay_cmap *cm) 559 { 560 u_char *r, *g, *b; 561 u_int index = cm->index; 562 u_int count = cm->count; 563 int i, error; 564 u_char rbuf[256], gbuf[256], bbuf[256]; 565 566 #ifdef VOYAGERFB_DEBUG 567 aprint_debug("putcmap: %d %d\n",index, count); 568 #endif 569 if (cm->index >= 256 || cm->count > 256 || 570 (cm->index + cm->count) > 256) 571 return EINVAL; 572 error = copyin(cm->red, &rbuf[index], count); 573 if (error) 574 return error; 575 error = copyin(cm->green, &gbuf[index], count); 576 if (error) 577 return error; 578 error = copyin(cm->blue, &bbuf[index], count); 579 if (error) 580 return error; 581 582 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 583 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 584 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 585 586 r = &sc->sc_cmap_red[index]; 587 g = &sc->sc_cmap_green[index]; 588 b = &sc->sc_cmap_blue[index]; 589 590 for (i = 0; i < count; i++) { 591 voyagerfb_putpalreg(sc, index, *r, *g, *b); 592 index++; 593 r++, g++, b++; 594 } 595 return 0; 596 } 597 598 static int 599 voyagerfb_getcmap(struct voyagerfb_softc *sc, struct wsdisplay_cmap *cm) 600 { 601 u_int index = cm->index; 602 u_int count = cm->count; 603 int error; 604 605 if (index >= 255 || count > 256 || index + count > 256) 606 return EINVAL; 607 608 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 609 if (error) 610 return error; 611 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 612 if (error) 613 return error; 614 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 615 if (error) 616 return error; 617 618 return 0; 619 } 620 621 static void 622 voyagerfb_restore_palette(struct voyagerfb_softc *sc) 623 { 624 int i; 625 626 for (i = 0; i < (1 << sc->sc_depth); i++) { 627 voyagerfb_putpalreg(sc, i, sc->sc_cmap_red[i], 628 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 629 } 630 } 631 632 static int 633 voyagerfb_putpalreg(struct voyagerfb_softc *sc, int idx, uint8_t r, 634 uint8_t g, uint8_t b) 635 { 636 uint32_t reg; 637 638 reg = (r << 16) | (g << 8) | b; 639 /* XXX we should probably write the CRT palette too */ 640 bus_space_write_4(sc->sc_memt, sc->sc_regh, 641 SM502_PALETTE_PANEL + (idx << 2), reg); 642 return 0; 643 } 644 645 static void 646 voyagerfb_init(struct voyagerfb_softc *sc) 647 { 648 int reg; 649 650 voyagerfb_wait(sc); 651 /* disable colour compare */ 652 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_COLOR_COMP_MASK, 0); 653 /* allow writes to all planes */ 654 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_PLANEMASK, 655 0xffffffff); 656 /* disable clipping */ 657 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_CLIP_TOP_LEFT, 0); 658 /* source and destination in local memory, no offset */ 659 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_SRC_BASE, 0); 660 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_DST_BASE, 0); 661 /* pitch is screen stride */ 662 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_PITCH, 663 sc->sc_width | (sc->sc_width << 16)); 664 /* window is screen width */ 665 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_WINDOW_WIDTH, 666 sc->sc_width | (sc->sc_width << 16)); 667 reg = bus_space_read_4(sc->sc_memt, sc->sc_regh, SM502_PANEL_DISP_CTRL); 668 reg &= ~SM502_PDC_DEPTH_MASK; 669 670 switch (sc->sc_depth) { 671 case 8: 672 bus_space_write_4(sc->sc_memt, sc->sc_regh, 673 SM502_STRETCH, SM502_STRETCH_8BIT); 674 sc->sc_stride = sc->sc_width; 675 reg |= SM502_PDC_8BIT; 676 break; 677 case 16: 678 bus_space_write_4(sc->sc_memt, sc->sc_regh, 679 SM502_STRETCH, SM502_STRETCH_16BIT); 680 sc->sc_stride = sc->sc_width << 1; 681 reg |= SM502_PDC_16BIT; 682 break; 683 case 24: 684 case 32: 685 bus_space_write_4(sc->sc_memt, sc->sc_regh, 686 SM502_STRETCH, SM502_STRETCH_32BIT); 687 sc->sc_stride = sc->sc_width << 2; 688 reg |= SM502_PDC_32BIT; 689 break; 690 } 691 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_PANEL_FB_OFFSET, 692 (sc->sc_stride << 16) | sc->sc_stride); 693 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_PANEL_DISP_CTRL, 694 reg); 695 696 /* put the cursor at the end of video memory */ 697 sc->sc_cursor_addr = 16 * 1024 * 1024 - 16 * 64; /* XXX */ 698 DPRINTF("%s: %08x\n", __func__, sc->sc_cursor_addr); 699 sc->sc_cursor = (uint32_t *)((uint8_t *)bus_space_vaddr(sc->sc_memt, sc->sc_fbh) 700 + sc->sc_cursor_addr); 701 #ifdef VOYAGERFB_DEBUG 702 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_PANEL_CRSR_XY, 0x00100010); 703 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_PANEL_CRSR_COL12, 0x0000ffff); 704 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_PANEL_CRSR_COL3, 0x0000f800); 705 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_PANEL_CRSR_ADDR, 706 SM502_CRSR_ENABLE | sc->sc_cursor_addr); 707 sc->sc_cursor[0] = 0x00000000; 708 sc->sc_cursor[1] = 0x00000000; 709 sc->sc_cursor[2] = 0xffffffff; 710 sc->sc_cursor[3] = 0xffffffff; 711 sc->sc_cursor[4] = 0xaaaaaaaa; 712 sc->sc_cursor[5] = 0xaaaaaaaa; 713 sc->sc_cursor[6] = 0xffffffff; 714 sc->sc_cursor[7] = 0x00000000; 715 #else 716 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_PANEL_CRSR_ADDR, 717 sc->sc_cursor_addr); 718 #endif 719 } 720 721 static void 722 voyagerfb_rectfill(struct voyagerfb_softc *sc, int x, int y, int wi, int he, 723 uint32_t colour) 724 { 725 726 voyagerfb_ready(sc); 727 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_CONTROL, 728 ROP_COPY | 729 SM502_CTRL_USE_ROP2 | 730 SM502_CTRL_CMD_RECTFILL | 731 SM502_CTRL_QUICKSTART_E); 732 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_FOREGROUND, 733 colour); 734 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_DST, 735 (x << 16) | y); 736 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_DIMENSION, 737 (wi << 16) | he); 738 } 739 740 static void 741 voyagerfb_bitblt(struct voyagerfb_softc *sc, int xs, int ys, int xd, int yd, 742 int wi, int he, int rop) 743 { 744 uint32_t cmd; 745 746 cmd = (rop & 0xf) | SM502_CTRL_USE_ROP2 | SM502_CTRL_CMD_BITBLT | 747 SM502_CTRL_QUICKSTART_E; 748 749 voyagerfb_ready(sc); 750 751 if (xd <= xs) { 752 /* left to right */ 753 } else { 754 /* 755 * According to the manual this flag reverses only the blitter's 756 * X direction. At least on my Gdium it also reverses the Y 757 * direction 758 */ 759 cmd |= SM502_CTRL_R_TO_L; 760 xs += wi - 1; 761 xd += wi - 1; 762 ys += he - 1; 763 yd += he - 1; 764 } 765 766 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_CONTROL, cmd); 767 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_SRC, 768 (xs << 16) | ys); 769 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_DST, 770 (xd << 16) | yd); 771 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_DIMENSION, 772 (wi << 16) | he); 773 } 774 775 static void 776 voyagerfb_cursor(void *cookie, int on, int row, int col) 777 { 778 struct rasops_info *ri = cookie; 779 struct vcons_screen *scr = ri->ri_hw; 780 struct voyagerfb_softc *sc = scr->scr_cookie; 781 int x, y, wi, he; 782 783 wi = ri->ri_font->fontwidth; 784 he = ri->ri_font->fontheight; 785 786 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 787 x = ri->ri_ccol * wi + ri->ri_xorigin; 788 y = ri->ri_crow * he + ri->ri_yorigin; 789 if (ri->ri_flg & RI_CURSOR) { 790 voyagerfb_bitblt(sc, x, y, x, y, wi, he, ROP_INVERT); 791 ri->ri_flg &= ~RI_CURSOR; 792 } 793 ri->ri_crow = row; 794 ri->ri_ccol = col; 795 if (on) { 796 x = ri->ri_ccol * wi + ri->ri_xorigin; 797 y = ri->ri_crow * he + ri->ri_yorigin; 798 voyagerfb_bitblt(sc, x, y, x, y, wi, he, ROP_INVERT); 799 ri->ri_flg |= RI_CURSOR; 800 } 801 } else { 802 scr->scr_ri.ri_crow = row; 803 scr->scr_ri.ri_ccol = col; 804 scr->scr_ri.ri_flg &= ~RI_CURSOR; 805 } 806 807 } 808 809 static inline void 810 voyagerfb_feed8(struct voyagerfb_softc *sc, uint8_t *data, int len) 811 { 812 uint32_t *port = (uint32_t *)sc->sc_dataport; 813 int i; 814 815 for (i = 0; i < ((len + 3) & 0xfffc); i++) { 816 *port = *data; 817 data++; 818 } 819 } 820 821 static inline void 822 voyagerfb_feed16(struct voyagerfb_softc *sc, uint16_t *data, int len) 823 { 824 uint32_t *port = (uint32_t *)sc->sc_dataport; 825 int i; 826 827 len = len << 1; 828 for (i = 0; i < ((len + 1) & 0xfffe); i++) { 829 *port = *data; 830 data++; 831 } 832 } 833 834 835 static void 836 voyagerfb_putchar(void *cookie, int row, int col, u_int c, long attr) 837 { 838 struct rasops_info *ri = cookie; 839 struct wsdisplay_font *font = PICK_FONT(ri, c); 840 struct vcons_screen *scr = ri->ri_hw; 841 struct voyagerfb_softc *sc = scr->scr_cookie; 842 uint32_t cmd; 843 844 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 845 int fg, bg, uc; 846 uint8_t *data; 847 int x, y, wi, he; 848 wi = font->fontwidth; 849 he = font->fontheight; 850 851 if (!CHAR_IN_FONT(c, font)) 852 return; 853 bg = ri->ri_devcmap[(attr >> 16) & 0x0f]; 854 fg = ri->ri_devcmap[(attr >> 24) & 0x0f]; 855 x = ri->ri_xorigin + col * wi; 856 y = ri->ri_yorigin + row * he; 857 if (c == 0x20) { 858 voyagerfb_rectfill(sc, x, y, wi, he, bg); 859 } else { 860 uc = c - font->firstchar; 861 data = (uint8_t *)font->data + uc * ri->ri_fontscale; 862 cmd = ROP_COPY | 863 SM502_CTRL_USE_ROP2 | 864 SM502_CTRL_CMD_HOSTWRT | 865 SM502_CTRL_HOSTBLT_MONO | 866 SM502_CTRL_QUICKSTART_E | 867 SM502_CTRL_MONO_PACK_32BIT; 868 voyagerfb_ready(sc); 869 bus_space_write_4(sc->sc_memt, sc->sc_regh, 870 SM502_CONTROL, cmd); 871 bus_space_write_4(sc->sc_memt, sc->sc_regh, 872 SM502_FOREGROUND, fg); 873 bus_space_write_4(sc->sc_memt, sc->sc_regh, 874 SM502_BACKGROUND, bg); 875 bus_space_write_4(sc->sc_memt, sc->sc_regh, 876 SM502_SRC, 0); 877 bus_space_write_4(sc->sc_memt, sc->sc_regh, 878 SM502_DST, (x << 16) | y); 879 bus_space_write_4(sc->sc_memt, sc->sc_regh, 880 SM502_DIMENSION, (wi << 16) | he); 881 /* now feed the data, padded to 32bit */ 882 switch (ri->ri_font->stride) { 883 case 1: 884 voyagerfb_feed8(sc, data, ri->ri_fontscale); 885 break; 886 case 2: 887 voyagerfb_feed16(sc, (uint16_t *)data, 888 ri->ri_fontscale); 889 break; 890 891 } 892 } 893 } 894 } 895 896 static void 897 voyagerfb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols) 898 { 899 struct rasops_info *ri = cookie; 900 struct vcons_screen *scr = ri->ri_hw; 901 struct voyagerfb_softc *sc = scr->scr_cookie; 902 int32_t xs, xd, y, width, height; 903 904 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 905 xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol; 906 xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol; 907 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 908 width = ri->ri_font->fontwidth * ncols; 909 height = ri->ri_font->fontheight; 910 voyagerfb_bitblt(sc, xs, y, xd, y, width, height, ROP_COPY); 911 } 912 } 913 914 static void 915 voyagerfb_erasecols(void *cookie, int row, int startcol, int ncols, 916 long fillattr) 917 { 918 struct rasops_info *ri = cookie; 919 struct vcons_screen *scr = ri->ri_hw; 920 struct voyagerfb_softc *sc = scr->scr_cookie; 921 int32_t x, y, width, height, fg, bg, ul; 922 923 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 924 x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol; 925 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 926 width = ri->ri_font->fontwidth * ncols; 927 height = ri->ri_font->fontheight; 928 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 929 930 voyagerfb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 931 } 932 } 933 934 static void 935 voyagerfb_copyrows(void *cookie, int srcrow, int dstrow, int nrows) 936 { 937 struct rasops_info *ri = cookie; 938 struct vcons_screen *scr = ri->ri_hw; 939 struct voyagerfb_softc *sc = scr->scr_cookie; 940 int32_t x, ys, yd, width, height; 941 int i; 942 943 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 944 x = ri->ri_xorigin; 945 ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow; 946 yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow; 947 width = ri->ri_emuwidth; 948 height = ri->ri_font->fontheight * nrows; 949 if ((nrows > 1) && (dstrow > srcrow)) { 950 /* 951 * the blitter can't do bottom-up copies so we have 952 * to copy line by line here 953 * should probably use a command sequence 954 */ 955 ys += (height - ri->ri_font->fontheight); 956 yd += (height - ri->ri_font->fontheight); 957 for (i = 0; i < nrows; i++) { 958 voyagerfb_bitblt(sc, x, ys, x, yd, width, 959 ri->ri_font->fontheight, ROP_COPY); 960 ys -= ri->ri_font->fontheight; 961 yd -= ri->ri_font->fontheight; 962 } 963 } else 964 voyagerfb_bitblt(sc, x, ys, x, yd, width, height, 965 ROP_COPY); 966 } 967 } 968 969 static void 970 voyagerfb_eraserows(void *cookie, int row, int nrows, long fillattr) 971 { 972 struct rasops_info *ri = cookie; 973 struct vcons_screen *scr = ri->ri_hw; 974 struct voyagerfb_softc *sc = scr->scr_cookie; 975 int32_t x, y, width, height, fg, bg, ul; 976 977 if ((sc->sc_locked == 0) && (sc->sc_mode == WSDISPLAYIO_MODE_EMUL)) { 978 x = ri->ri_xorigin; 979 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 980 width = ri->ri_emuwidth; 981 height = ri->ri_font->fontheight * nrows; 982 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 983 984 voyagerfb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 985 } 986 } 987 988 /* backlight control */ 989 static void 990 voyagerfb_setup_backlight(struct voyagerfb_softc *sc) 991 { 992 /* switch the pin to gpio mode if it isn't already */ 993 voyager_control_gpio(sc->sc_gpio_cookie, ~GPIO_BACKLIGHT, 0); 994 /* turn it on */ 995 voyager_write_gpio(sc->sc_gpio_cookie, 0xffffffff, GPIO_BACKLIGHT); 996 sc->sc_bl_on = 1; 997 sc->sc_bl_level = 255; 998 pmf_event_register(sc->sc_dev, PMFE_DISPLAY_BRIGHTNESS_UP, 999 voyagerfb_brightness_up, TRUE); 1000 pmf_event_register(sc->sc_dev, PMFE_DISPLAY_BRIGHTNESS_DOWN, 1001 voyagerfb_brightness_down, TRUE); 1002 } 1003 1004 static void 1005 voyagerfb_set_backlight(struct voyagerfb_softc *sc, int level) 1006 { 1007 1008 /* 1009 * should we do nothing when backlight is off, should we just store the 1010 * level and use it when turning back on or should we just flip sc_bl_on 1011 * and turn the backlight on? 1012 * For now turn it on so a crashed screensaver can't get the user stuck 1013 * with a dark screen as long as hotkeys work 1014 */ 1015 if (level > 255) level = 255; 1016 if (level < 0) level = 0; 1017 if (level == sc->sc_bl_level) 1018 return; 1019 sc->sc_bl_level = level; 1020 if (sc->sc_bl_on == 0) 1021 sc->sc_bl_on = 1; 1022 /* and here we would actually muck with the hardware */ 1023 if ((level == 0) || (level == 255)) { 1024 /* in these cases bypass the PWM and use the gpio */ 1025 voyager_control_gpio(sc->sc_gpio_cookie, ~GPIO_BACKLIGHT, 0); 1026 if (level == 0) { 1027 voyager_write_gpio(sc->sc_gpio_cookie, ~GPIO_BACKLIGHT, 0); 1028 } else { 1029 voyager_write_gpio(sc->sc_gpio_cookie, 0xffffffff, GPIO_BACKLIGHT); 1030 } 1031 } else { 1032 uint32_t pwm; 1033 1034 pwm = voyager_set_pwm(20000, level * 1000 / 256); 1035 pwm |= SM502_PWM_ENABLE; 1036 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_PWM0, pwm); 1037 1038 /* let the PWM take over */ 1039 voyager_control_gpio(sc->sc_gpio_cookie, 0xffffffff, GPIO_BACKLIGHT); 1040 } 1041 } 1042 1043 static void 1044 voyagerfb_switch_backlight(struct voyagerfb_softc *sc, int on) 1045 { 1046 1047 if (on == sc->sc_bl_on) 1048 return; 1049 sc->sc_bl_on = on; 1050 if (on) { 1051 int level = sc->sc_bl_level; 1052 1053 sc->sc_bl_level = -1; 1054 voyagerfb_set_backlight(sc, level); 1055 } else { 1056 voyager_control_gpio(sc->sc_gpio_cookie, ~GPIO_BACKLIGHT, 0); 1057 voyager_write_gpio(sc->sc_gpio_cookie, ~GPIO_BACKLIGHT, 0); 1058 } 1059 } 1060 1061 1062 static void 1063 voyagerfb_brightness_up(device_t dev) 1064 { 1065 struct voyagerfb_softc *sc = device_private(dev); 1066 1067 voyagerfb_set_backlight(sc, sc->sc_bl_level + 8); 1068 } 1069 1070 static void 1071 voyagerfb_brightness_down(device_t dev) 1072 { 1073 struct voyagerfb_softc *sc = device_private(dev); 1074 1075 voyagerfb_set_backlight(sc, sc->sc_bl_level - 8); 1076 } 1077 1078 static int 1079 voyagerfb_set_curpos(struct voyagerfb_softc *sc, int x, int y) 1080 { 1081 uint32_t val; 1082 int xx, yy; 1083 1084 sc->sc_cur_x = x; 1085 sc->sc_cur_y = y; 1086 1087 xx = x - sc->sc_hot_x; 1088 yy = y - sc->sc_hot_y; 1089 1090 if (xx < 0) xx = abs(xx) | 0x800; 1091 if (yy < 0) yy = abs(yy) | 0x800; 1092 1093 val = (xx & 0xffff) | (yy << 16); 1094 bus_space_write_4(sc->sc_memt, sc->sc_regh, SM502_PANEL_CRSR_XY, val); 1095 1096 return 0; 1097 } 1098 1099 static int 1100 voyagerfb_gcursor(struct voyagerfb_softc *sc, struct wsdisplay_cursor *cur) 1101 { 1102 /* do nothing for now */ 1103 return 0; 1104 } 1105 1106 static int 1107 voyagerfb_scursor(struct voyagerfb_softc *sc, struct wsdisplay_cursor *cur) 1108 { 1109 if (cur->which & WSDISPLAY_CURSOR_DOCUR) { 1110 1111 bus_space_write_4(sc->sc_memt, sc->sc_regh, 1112 SM502_PANEL_CRSR_ADDR, 1113 sc->sc_cursor_addr | (cur->enable ? SM502_CRSR_ENABLE : 0)); 1114 DPRINTF("%s: %08x\n", __func__, sc->sc_cursor_addr); 1115 } 1116 if (cur->which & WSDISPLAY_CURSOR_DOHOT) { 1117 1118 sc->sc_hot_x = cur->hot.x; 1119 sc->sc_hot_y = cur->hot.y; 1120 } 1121 if (cur->which & WSDISPLAY_CURSOR_DOPOS) { 1122 1123 voyagerfb_set_curpos(sc, cur->pos.x, cur->pos.y); 1124 } 1125 if (cur->which & WSDISPLAY_CURSOR_DOCMAP) { 1126 int i, idx; 1127 uint32_t val; 1128 1129 for (i = 0; i < cur->cmap.count; i++) { 1130 val = ((cur->cmap.red[i] & 0xf8) << 8) | 1131 ((cur->cmap.green[i] & 0xfc) << 3) | 1132 ((cur->cmap.blue[i] & 0xf8) >> 3); 1133 idx = i + cur->cmap.index; 1134 bus_space_write_2(sc->sc_memt, sc->sc_regh, 1135 SM502_PANEL_CRSR_COL12 + (idx << 1), 1136 val); 1137 /* 1138 * if userland doesn't try to set the 3rd colour we 1139 * assume it expects an X11-style 2 colour cursor 1140 * X should be our main user anyway 1141 */ 1142 if ((idx == 1) && 1143 ((cur->cmap.count + cur->cmap.index) < 3)) { 1144 bus_space_write_2(sc->sc_memt, sc->sc_regh, 1145 SM502_PANEL_CRSR_COL3, 1146 val); 1147 } 1148 DPRINTF("%s: %d %04x\n", __func__, i + cur->cmap.index, val); 1149 } 1150 } 1151 if (cur->which & WSDISPLAY_CURSOR_DOSHAPE) { 1152 1153 int i, j, cnt = 0; 1154 uint32_t latch = 0, omask; 1155 uint8_t imask; 1156 DPRINTF("%s: %d %d\n", __func__, cur->size.x, cur->size.y); 1157 for (i = 0; i < 256; i++) { 1158 omask = 0x00000001; 1159 imask = 0x01; 1160 cur->image[cnt] &= cur->mask[cnt]; 1161 for (j = 0; j < 8; j++) { 1162 if (cur->mask[cnt] & imask) 1163 latch |= omask; 1164 omask <<= 1; 1165 if (cur->image[cnt] & imask) 1166 latch |= omask; 1167 omask <<= 1; 1168 imask <<= 1; 1169 } 1170 cnt++; 1171 imask = 0x01; 1172 cur->image[cnt] &= cur->mask[cnt]; 1173 for (j = 0; j < 8; j++) { 1174 if (cur->mask[cnt] & imask) 1175 latch |= omask; 1176 omask <<= 1; 1177 if (cur->image[cnt] & imask) 1178 latch |= omask; 1179 omask <<= 1; 1180 imask <<= 1; 1181 } 1182 cnt++; 1183 sc->sc_cursor[i] = latch; 1184 latch = 0; 1185 } 1186 } 1187 return 0; 1188 } 1189
Indexes created Tue Sep 30 11:09:46 GMT 2025