ite_cc.c revision 1.42
1 /* $NetBSD: ite_cc.c,v 1.42 2021/04/27 14:48:29 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Leo Weppelman 5 * Copyright (c) 1994 Christian E. Hopps 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Christian E. Hopps. 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: ite_cc.c,v 1.42 2021/04/27 14:48:29 thorpej Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/conf.h> 39 #include <sys/proc.h> 40 #include <sys/ioctl.h> 41 #include <sys/tty.h> 42 #include <sys/systm.h> 43 #include <sys/queue.h> 44 #include <sys/termios.h> 45 #include <sys/malloc.h> 46 #include <sys/device.h> 47 #include <dev/cons.h> 48 #include <machine/cpu.h> 49 #include <atari/atari/device.h> 50 #include <atari/dev/itevar.h> 51 #include <atari/dev/iteioctl.h> 52 #include <atari/dev/grfioctl.h> 53 #include <atari/dev/grfabs_reg.h> 54 #include <atari/dev/grfvar.h> 55 #include <atari/dev/font.h> 56 #include <atari/dev/viewioctl.h> 57 #include <atari/dev/viewvar.h> 58 59 #include "grfcc.h" 60 61 /* 62 * This is what ip->priv points to; 63 * it contains local variables for custom-chip ites. 64 */ 65 struct ite_priv { 66 u_char **row_ptr; /* array of pointers into the bitmap */ 67 u_long row_bytes; 68 u_long cursor_opt; 69 u_short *column_offset; /* array of offsets for columns */ 70 u_int row_offset; /* the row offset */ 71 u_short width; /* the bitmap width */ 72 u_short underline; /* where the underline goes */ 73 u_short ft_x; /* the font width */ 74 u_short ft_y; /* the font height */ 75 u_char *font_cell[256];/* the font pointer */ 76 }; 77 typedef struct ite_priv ipriv_t; 78 79 /* 80 * We need the following space to get an ite-console setup before 81 * the VM-system is brought up. We setup for a 1280x960 monitor with 82 * an 8x8 font. 83 */ 84 #define CONS_MAXROW 120 /* Max. number of rows on console */ 85 #define CONS_MAXCOL 160 /* Max. number of columns on console */ 86 static u_short con_columns[CONS_MAXCOL]; 87 static u_char *con_rows[CONS_MAXROW]; 88 static ipriv_t con_ipriv; 89 90 extern font_info font_info_8x8; 91 extern font_info font_info_8x16; 92 93 static void view_init(struct ite_softc *); 94 static void view_deinit(struct ite_softc *); 95 static int itecc_ioctl(struct ite_softc *, u_long, void *, int, 96 struct lwp *); 97 static int ite_newsize(struct ite_softc *, struct itewinsize *); 98 static void cursor32(struct ite_softc *, int); 99 static void putc8(struct ite_softc *, int, int, int, int); 100 static void clear8(struct ite_softc *, int, int, int, int); 101 static void scroll8(struct ite_softc *, int, int, int, int); 102 static void scrollbmap(bmap_t *, u_short, u_short, u_short, u_short, 103 short, short); 104 105 /* 106 * grfcc config stuff 107 */ 108 static void grfccattach(device_t, device_t, void *); 109 static int grfccmatch(device_t, cfdata_t, void *); 110 static int grfccprint(void *, const char *); 111 112 CFATTACH_DECL_NEW(grfcc, sizeof(struct grf_softc), 113 grfccmatch, grfccattach, NULL, NULL); 114 115 /* 116 * only used in console init. 117 */ 118 static struct cfdata *cfdata_grf = NULL; 119 120 /* 121 * Probe functions we can use: 122 */ 123 #ifdef TT_VIDEO 124 void tt_probe_video(MODES *); 125 #endif /* TT_VIDEO */ 126 #ifdef FALCON_VIDEO 127 void falcon_probe_video(MODES *); 128 #endif /* FALCON_VIDEO */ 129 130 static int 131 grfccmatch(device_t parent, cfdata_t cf, void *aux) 132 { 133 static int did_consinit = 0; 134 static int must_probe = 1; 135 grf_auxp_t *grf_auxp = aux; 136 extern const struct cdevsw view_cdevsw; 137 138 if (must_probe) { 139 /* 140 * Check if the layers we depend on exist 141 */ 142 if (!(machineid & (ATARI_TT|ATARI_FALCON))) 143 return 0; 144 #ifdef TT_VIDEO 145 if ((machineid & ATARI_TT) && !grfabs_probe(&tt_probe_video)) 146 return 0; 147 #endif /* TT_VIDEO */ 148 #ifdef FALCON_VIDEO 149 if ((machineid & ATARI_FALCON) && 150 !grfabs_probe(&falcon_probe_video)) 151 return 0; 152 #endif /* FALCON_VIDEO */ 153 154 viewprobe(); 155 must_probe = 0; 156 } 157 158 if (atari_realconfig == 0) { 159 /* 160 * Early console init. Only match first unit. 161 */ 162 if (did_consinit) 163 return 0; 164 if ((*view_cdevsw.d_open)(cf->cf_unit, 0, 0, NULL)) 165 return 0; 166 cfdata_grf = cf; 167 did_consinit = 1; 168 return 1; 169 } 170 171 /* 172 * Normal config. When we are called directly from the grfbus, 173 * we only match the first unit. The attach function will call us for 174 * the other configured units. 175 */ 176 if (grf_auxp->from_bus_match && (did_consinit > 1)) 177 return 0; 178 179 if (!grf_auxp->from_bus_match && (grf_auxp->unit != cf->cf_unit)) 180 return 0; 181 182 /* 183 * Final constraint: each grf needs a view.... 184 */ 185 if ((cfdata_grf == NULL) || (did_consinit > 1)) { 186 if ((*view_cdevsw.d_open)(cf->cf_unit, 0, 0, NULL)) 187 return 0; 188 } 189 did_consinit = 2; 190 return 1; 191 } 192 193 /* 194 * attach: initialize the grf-structure and try to attach an ite to us. 195 * note : self is NULL during early console init. 196 */ 197 static void 198 grfccattach(device_t parent, device_t self, void *aux) 199 { 200 static struct grf_softc congrf; 201 static int first_attach = 1; 202 grf_auxp_t *grf_bus_auxp = aux; 203 grf_auxp_t grf_auxp; 204 struct grf_softc *sc; 205 int maj; 206 extern const struct cdevsw grf_cdevsw; 207 208 /* 209 * find our major device number 210 */ 211 maj = cdevsw_lookup_major(&grf_cdevsw); 212 213 /* 214 * Handle exception case: early console init 215 */ 216 if (self == NULL) { 217 struct device itedev; 218 219 memset(&itedev, 0, sizeof(itedev)); 220 itedev.dv_private = &congrf; 221 222 congrf.g_unit = cfdata_grf->cf_unit; 223 congrf.g_grfdev = makedev(maj, congrf.g_unit); 224 congrf.g_itedev = (dev_t)-1; 225 congrf.g_flags = GF_ALIVE; 226 congrf.g_mode = grf_mode; 227 congrf.g_conpri = grfcc_cnprobe(); 228 congrf.g_viewdev = congrf.g_unit; 229 grfcc_iteinit(&congrf); 230 grf_viewsync(&congrf); 231 232 /* Attach console ite */ 233 atari_config_found(cfdata_grf, &itedev, &congrf, grfccprint, 234 CFARG_EOL); 235 return; 236 } 237 238 sc = device_private(self); 239 sc->g_device = self; 240 sc->g_unit = device_unit(self); 241 grfsp[sc->g_unit] = sc; 242 243 if ((cfdata_grf != NULL) && (sc->g_unit == congrf.g_unit)) { 244 /* 245 * We inited earlier just copy the info, take care 246 * not to copy the device struct though. 247 */ 248 memcpy(&sc->g_display, &congrf.g_display, 249 (char *)&sc[1] - (char *)&sc->g_display); 250 } else { 251 sc->g_grfdev = makedev(maj, sc->g_unit); 252 sc->g_itedev = (dev_t)-1; 253 sc->g_flags = GF_ALIVE; 254 sc->g_mode = grf_mode; 255 sc->g_conpri = 0; 256 sc->g_viewdev = sc->g_unit; 257 grfcc_iteinit(sc); 258 grf_viewsync(sc); 259 } 260 261 printf(": width %d height %d", sc->g_display.gd_dwidth, 262 sc->g_display.gd_dheight); 263 if (sc->g_display.gd_colors == 2) 264 printf(" monochrome\n"); 265 else 266 printf(" colors %d\n", sc->g_display.gd_colors); 267 268 /* 269 * try and attach an ite 270 */ 271 config_found(self, sc /* XXX */, grfccprint, CFARG_EOL); 272 273 /* 274 * If attaching the first unit, go ahead and 'find' the rest of us 275 */ 276 if (first_attach) { 277 first_attach = 0; 278 grf_auxp.from_bus_match = 0; 279 for (grf_auxp.unit=1; grf_auxp.unit < NGRFCC; grf_auxp.unit++) { 280 config_found(parent, &grf_auxp, grf_bus_auxp->busprint, 281 CFARG_EOL); 282 } 283 } 284 } 285 286 static int 287 grfccprint(void *aux, const char *pnp) 288 { 289 290 if (pnp) 291 aprint_normal("ite at %s", pnp); 292 return UNCONF; 293 } 294 295 /* 296 * called from grf_cc to return console priority 297 */ 298 int 299 grfcc_cnprobe(void) 300 { 301 return CN_INTERNAL; 302 } 303 /* 304 * called from grf_cc to init ite portion of 305 * grf_softc struct 306 */ 307 void 308 grfcc_iteinit(struct grf_softc *sc) 309 { 310 311 sc->g_itecursor = cursor32; 312 sc->g_iteputc = putc8; 313 sc->g_iteclear = clear8; 314 sc->g_itescroll = scroll8; 315 sc->g_iteinit = view_init; 316 sc->g_itedeinit = view_deinit; 317 } 318 319 static void 320 view_deinit(struct ite_softc *ip) 321 { 322 ip->flags &= ~ITE_INITED; 323 } 324 325 static void 326 view_init(register struct ite_softc *ip) 327 { 328 struct itewinsize wsz; 329 ipriv_t *cci; 330 331 if ((cci = ip->priv) != NULL) 332 return; 333 334 ip->itexx_ioctl = itecc_ioctl; 335 336 #if defined(KFONT_8X8) 337 ip->font = font_info_8x8; 338 #else 339 ip->font = font_info_8x16; 340 #endif 341 342 /* Find the correct set of rendering routines for this font. */ 343 if (ip->font.width != 8) 344 panic("kernel font size not supported"); 345 346 if (!atari_realconfig) 347 ip->priv = cci = &con_ipriv; 348 else 349 ip->priv = cci = malloc(sizeof(*cci), M_DEVBUF, M_WAITOK); 350 if (cci == NULL) 351 panic("No memory for ite-view"); 352 memset(cci, 0, sizeof(*cci)); 353 354 cci->cursor_opt = 0; 355 cci->row_ptr = NULL; 356 cci->column_offset = NULL; 357 358 wsz.x = ite_default_x; 359 wsz.y = ite_default_y; 360 wsz.width = ite_default_width; 361 wsz.height = ite_default_height; 362 wsz.depth = ite_default_depth; 363 364 ite_newsize (ip, &wsz); 365 366 /* 367 * Only console will be turned on by default.. 368 */ 369 if (ip->flags & ITE_ISCONS) 370 ip->grf->g_mode(ip->grf, GM_GRFON, NULL, 0, 0); 371 } 372 373 static int 374 ite_newsize(struct ite_softc *ip, struct itewinsize *winsz) 375 { 376 struct view_size vs; 377 ipriv_t *cci = ip->priv; 378 u_long i, j; 379 int error = 0; 380 view_t *view; 381 extern const struct cdevsw view_cdevsw; 382 383 vs.x = winsz->x; 384 vs.y = winsz->y; 385 vs.width = winsz->width; 386 vs.height = winsz->height; 387 vs.depth = winsz->depth; 388 389 error = (*view_cdevsw.d_ioctl)(ip->grf->g_viewdev, VIOCSSIZE, 390 (void *)&vs, 0, NOLWP); 391 view = viewview(ip->grf->g_viewdev); 392 393 /* 394 * Reinitialize our structs 395 */ 396 ip->cols = view->display.width / ip->font.width; 397 ip->rows = view->display.height / ip->font.height; 398 399 /* 400 * save new values so that future opens use them 401 * this may not be correct when we implement Virtual Consoles 402 */ 403 ite_default_height = view->display.height; 404 ite_default_width = view->display.width; 405 ite_default_x = view->display.x; 406 ite_default_y = view->display.y; 407 ite_default_depth = view->bitmap->depth; 408 409 if (cci->row_ptr && (cci->row_ptr != con_rows)) { 410 free(cci->row_ptr, M_DEVBUF); 411 cci->row_ptr = NULL; 412 } 413 if (cci->column_offset && (cci->column_offset != con_columns)) { 414 free(cci->column_offset, M_DEVBUF); 415 cci->column_offset = NULL; 416 } 417 418 if (!atari_realconfig) { 419 cci->row_ptr = con_rows; 420 cci->column_offset = con_columns; 421 } else { 422 cci->row_ptr = malloc(sizeof(u_char *) * ip->rows, 423 M_DEVBUF, M_NOWAIT); 424 cci->column_offset = malloc(sizeof(u_int) * ip->cols, 425 M_DEVBUF, M_NOWAIT); 426 } 427 428 if (!cci->row_ptr || !cci->column_offset) 429 panic("No memory for ite-view"); 430 431 cci->width = view->bitmap->bytes_per_row << 3; 432 cci->underline = ip->font.baseline + 1; 433 cci->row_offset = view->bitmap->bytes_per_row; 434 cci->ft_x = ip->font.width; 435 cci->ft_y = ip->font.height; 436 cci->row_bytes = cci->row_offset * cci->ft_y; 437 cci->row_ptr[0] = view->bitmap->plane; 438 for (i = 1; i < ip->rows; i++) 439 cci->row_ptr[i] = cci->row_ptr[i - 1] + cci->row_bytes; 440 441 /* 442 * Initialize the column offsets to point at the correct location 443 * in the first plane. This definitely assumes a font width of 8! 444 */ 445 j = view->bitmap->depth * 2; 446 cci->column_offset[0] = 0; 447 for (i = 1; i < ip->cols; i++) 448 cci->column_offset[i] = ((i >> 1) * j) + (i & 1); 449 450 /* initialize the font cell pointers */ 451 cci->font_cell[ip->font.font_lo] = ip->font.font_p; 452 for (i = ip->font.font_lo + 1; i <= ip->font.font_hi; i++) 453 cci->font_cell[i] = cci->font_cell[i - 1] + ip->font.height; 454 455 return error; 456 } 457 458 int 459 itecc_ioctl(struct ite_softc *ip, u_long cmd, void * addr, int flag, 460 struct lwp *l) 461 { 462 struct winsize ws; 463 struct itewinsize *is; 464 int error = 0; 465 view_t *view = viewview(ip->grf->g_viewdev); 466 extern const struct cdevsw ite_cdevsw; 467 extern const struct cdevsw view_cdevsw; 468 469 switch (cmd) { 470 case ITEIOCSWINSZ: 471 is = (struct itewinsize *)addr; 472 473 if (ite_newsize(ip, is)) 474 error = ENOMEM; 475 else { 476 view = viewview(ip->grf->g_viewdev); 477 ws.ws_row = ip->rows; 478 ws.ws_col = ip->cols; 479 ws.ws_xpixel = view->display.width; 480 ws.ws_ypixel = view->display.height; 481 ite_reset(ip); 482 /* 483 * XXX tell tty about the change 484 * XXX this is messy, but works 485 */ 486 (*ite_cdevsw.d_ioctl)(ip->grf->g_itedev, TIOCSWINSZ, 487 (void *)&ws, 0, l); 488 } 489 break; 490 case VIOCSCMAP: 491 case VIOCGCMAP: 492 /* 493 * XXX watchout for that NOLWP. its not really the kernel 494 * XXX talking these two commands don't use the proc pointer 495 * XXX though. 496 */ 497 error = (*view_cdevsw.d_ioctl)(ip->grf->g_viewdev, cmd, addr, 498 flag, NOLWP); 499 break; 500 default: 501 error = EPASSTHROUGH; 502 break; 503 } 504 return error; 505 } 506 507 static void 508 cursor32(struct ite_softc *ip, int flag) 509 { 510 int cend; 511 u_char *pl; 512 ipriv_t *cci; 513 514 cci = ip->priv; 515 516 if (flag == END_CURSOROPT) 517 cci->cursor_opt--; 518 else if (flag == START_CURSOROPT) { 519 if (!cci->cursor_opt) 520 cursor32(ip, ERASE_CURSOR); 521 cci->cursor_opt++; 522 return; /* if we are already opted. */ 523 } 524 525 if (cci->cursor_opt) 526 return; /* if we are still nested. */ 527 /* else we draw the cursor. */ 528 529 if (flag != DRAW_CURSOR && flag != END_CURSOROPT) { 530 /* 531 * erase the cursor 532 */ 533 cend = ip->font.height - 1; 534 pl = cci->column_offset[ip->cursorx] 535 + cci->row_ptr[ip->cursory]; 536 __asm volatile 537 ("1: notb %0@ ; addaw %4,%0\n\t" 538 "dbra %1,1b" 539 : "=a" (pl), "=d" (cend) 540 : "0" (pl), "1" (cend), 541 "d" (cci->row_offset) 542 ); 543 } 544 545 if (flag != DRAW_CURSOR && flag != MOVE_CURSOR && flag != END_CURSOROPT) 546 return; 547 548 /* 549 * draw the cursor 550 */ 551 cend = uimin(ip->curx, ip->cols - 1); 552 if (flag == DRAW_CURSOR 553 && ip->cursorx == cend && ip->cursory == ip->cury) 554 return; 555 ip->cursorx = cend; 556 ip->cursory = ip->cury; 557 cend = ip->font.height - 1; 558 pl = cci->column_offset[ip->cursorx] 559 + cci->row_ptr[ip->cursory]; 560 561 __asm volatile 562 ("1: notb %0@ ; addaw %4,%0\n\t" 563 "dbra %1,1b" 564 : "=a" (pl), "=d" (cend) 565 : "0" (pl), "1" (cend), 566 "d" (cci->row_offset) 567 ); 568 } 569 570 static void 571 putc8(struct ite_softc *ip, int c, int dy, int dx, int mode) 572 { 573 ipriv_t *cci = (ipriv_t *)ip->priv; 574 u_char *pl = cci->column_offset[dx] + cci->row_ptr[dy]; 575 u_int fh = cci->ft_y; 576 u_int ro = cci->row_offset; 577 u_char eor_mask; 578 u_char bl, tmp, ul; 579 u_char *ft; 580 581 if (c < ip->font.font_lo || c > ip->font.font_hi) 582 return; 583 584 ft = cci->font_cell[c]; 585 586 if (!mode) { 587 while (fh--) { 588 *pl = *ft++; pl += ro; 589 } 590 return; 591 } 592 593 eor_mask = (mode & ATTR_INV) ? 0xff : 0x00; 594 bl = (mode & ATTR_BOLD) ? 1 : 0; 595 ul = (mode & ATTR_UL) ? fh - cci->underline : fh; 596 for (; fh--; pl += ro) { 597 if (fh != ul) { 598 tmp = *ft++; 599 if (bl) 600 tmp |= (tmp >> 1); 601 *pl = tmp ^ eor_mask; 602 } else { 603 *pl = 0xff ^ eor_mask; 604 ft++; 605 } 606 } 607 } 608 609 static void 610 clear8(struct ite_softc *ip, int sy, int sx, int h, int w) 611 { 612 ipriv_t *cci = (ipriv_t *) ip->priv; 613 view_t *v = viewview(ip->grf->g_viewdev); 614 bmap_t *bm = v->bitmap; 615 616 if ((sx == 0) && (w == ip->cols)) { 617 /* common case: clearing whole lines */ 618 while (h--) { 619 int i; 620 u_char *ptr = cci->row_ptr[sy]; 621 for (i = 0; i < ip->font.height; i++) { 622 memset(ptr, 0, bm->bytes_per_row); 623 ptr += bm->bytes_per_row; 624 } 625 sy++; 626 } 627 } else { 628 /* 629 * clearing only part of a line 630 * XXX could be optimized MUCH better, but is it worth the 631 * trouble? 632 */ 633 634 int i; 635 u_char *pls, *ple; 636 637 pls = cci->row_ptr[sy]; 638 ple = pls + cci->column_offset[sx + w - 1]; 639 pls = pls + cci->column_offset[sx]; 640 641 for (i = ((ip->font.height) * h) - 1; i >= 0; i--) { 642 u_char *p = pls; 643 while (p <= ple) 644 *p++ = 0; 645 pls += bm->bytes_per_row; 646 ple += bm->bytes_per_row; 647 } 648 } 649 } 650 651 /* Note: sx is only relevant for SCROLL_LEFT or SCROLL_RIGHT. */ 652 static void 653 scroll8(register struct ite_softc *ip, register int sy, int sx, int count, 654 int dir) 655 { 656 bmap_t *bm = viewview(ip->grf->g_viewdev)->bitmap; 657 u_char *pl = ((ipriv_t *)ip->priv)->row_ptr[sy]; 658 659 if (dir == SCROLL_UP) { 660 int dy = sy - count; 661 662 cursor32(ip, ERASE_CURSOR); 663 scrollbmap(bm, 0, dy * ip->font.height, bm->bytes_per_row >> 3, 664 (ip->bottom_margin - dy + 1) * ip->font.height, 665 0, -(count * ip->font.height)); 666 } else if (dir == SCROLL_DOWN) { 667 cursor32(ip, ERASE_CURSOR); 668 scrollbmap(bm, 0, sy * ip->font.height, bm->bytes_per_row >> 3, 669 (ip->bottom_margin - sy + 1) * ip->font.height, 670 0, count * ip->font.height); 671 } else if (dir == SCROLL_RIGHT) { 672 int sofs = (ip->cols - count) * ip->font.width; 673 int dofs = (ip->cols) * ip->font.width; 674 int i, j; 675 676 cursor32(ip, ERASE_CURSOR); 677 for (j = ip->font.height - 1; j >= 0; j--) { 678 int sofs2 = sofs, dofs2 = dofs; 679 for (i = (ip->cols - (sx + count)) - 1; i >= 0; i--) { 680 int t; 681 sofs2 -= ip->font.width; 682 dofs2 -= ip->font.width; 683 __asm("bfextu %1@{%2:%3}, %0" : "=d" (t) 684 : "a" (pl), "d" (sofs2), 685 "d" (ip->font.width)); 686 __asm("bfins %3, %0@{%1:%2}" : 687 : "a" (pl), "d" (dofs2), 688 "d" (ip->font.width), "d" (t)); 689 } 690 pl += bm->bytes_per_row; 691 } 692 } else { /* SCROLL_LEFT */ 693 int sofs = (sx) * ip->font.width; 694 int dofs = (sx - count) * ip->font.width; 695 int i, j; 696 697 cursor32(ip, ERASE_CURSOR); 698 for (j = ip->font.height - 1; j >= 0; j--) { 699 int sofs2 = sofs, dofs2 = dofs; 700 for (i = (ip->cols - sx) - 1; i >= 0; i--) { 701 int t; 702 703 __asm("bfextu %1@{%2:%3}, %0" : "=d" (t) 704 : "a" (pl), "d" (sofs2), 705 "d" (ip->font.width)); 706 __asm("bfins %3, %0@{%1:%2}" : 707 : "a" (pl), "d" (dofs2), 708 "d" (ip->font.width), "d" (t)); 709 sofs2 += ip->font.width; 710 dofs2 += ip->font.width; 711 } 712 pl += bm->bytes_per_row; 713 } 714 } 715 } 716 717 static void 718 scrollbmap (bmap_t *bm, u_short x, u_short y, u_short width, u_short height, 719 short dx, short dy) 720 { 721 u_short lwpr = bm->bytes_per_row >> 2; 722 723 if (dx) { 724 /* FIX: */ 725 panic ("delta x not supported in scroll bitmap yet."); 726 } 727 728 if (dy == 0) { 729 return; 730 } 731 if (dy > 0) { 732 u_long *pl = (u_long *)bm->plane; 733 u_long *src_y = pl + (lwpr * y); 734 u_long *dest_y = pl + (lwpr * (y + dy)); 735 u_long count = lwpr * (height - dy); 736 u_long *clr_y = src_y; 737 u_long clr_count = dest_y - src_y; 738 u_long bc, cbc; 739 740 src_y += count - 1; 741 dest_y += count - 1; 742 743 bc = count >> 4; 744 count &= 0xf; 745 746 while (bc--) { 747 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 748 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 749 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 750 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 751 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 752 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 753 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 754 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 755 } 756 while (count--) 757 *dest_y-- = *src_y--; 758 759 cbc = clr_count >> 4; 760 clr_count &= 0xf; 761 762 while (cbc--) { 763 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 764 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 765 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 766 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 767 } 768 while (clr_count--) 769 *clr_y++ = 0; 770 } else { 771 u_long *pl = (u_long *)bm->plane; 772 u_long *src_y = pl + (lwpr * (y - dy)); 773 u_long *dest_y = pl + (lwpr * y); 774 long count = lwpr * (height + dy); 775 u_long *clr_y = dest_y + count; 776 u_long clr_count = src_y - dest_y; 777 u_long bc, cbc; 778 779 bc = count >> 4; 780 count &= 0xf; 781 782 while (bc--) { 783 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 784 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 785 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 786 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 787 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 788 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 789 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 790 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 791 } 792 while (count--) 793 *dest_y++ = *src_y++; 794 795 cbc = clr_count >> 4; 796 clr_count &= 0xf; 797 798 while (cbc--) { 799 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 800 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 801 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 802 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 803 } 804 while (clr_count--) 805 *clr_y++ = 0; 806 } 807 } 808
Indexes created Sat Sep 27 14:09:57 GMT 2025