ite_cc.c revision 1.36
1 /* $NetBSD: ite_cc.c,v 1.36 2010/04/13 13:29:35 tsutsui 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 1.36 2010/04/13 13:29:35 tsutsui 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 void grfccattach(struct device *, struct device *, void *); 109 int grfccmatch(struct device *, struct cfdata *, void *); 110 int grfccprint(void *, const char *); 111 112 CFATTACH_DECL(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 int 131 grfccmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 132 { 133 static int did_consinit = 0; 134 static int must_probe = 1; 135 grf_auxp_t *grf_auxp = auxp; 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)(cfp->cf_unit, 0, 0, NULL)) 165 return 0; 166 cfdata_grf = cfp; 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 != cfp->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)(cfp->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 : dp is NULL during early console init. 196 */ 197 void 198 grfccattach(struct device *pdp, struct device *dp, void *auxp) 199 { 200 static struct grf_softc congrf; 201 static int first_attach = 1; 202 grf_auxp_t *grf_bus_auxp = auxp; 203 grf_auxp_t grf_auxp; 204 struct grf_softc *gp; 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 (dp == NULL) { 217 congrf.g_unit = cfdata_grf->cf_unit; 218 congrf.g_grfdev = makedev(maj, congrf.g_unit); 219 congrf.g_itedev = (dev_t)-1; 220 congrf.g_flags = GF_ALIVE; 221 congrf.g_mode = grf_mode; 222 congrf.g_conpri = grfcc_cnprobe(); 223 congrf.g_viewdev = congrf.g_unit; 224 grfcc_iteinit(&congrf); 225 grf_viewsync(&congrf); 226 227 /* Attach console ite */ 228 atari_config_found(cfdata_grf, NULL, &congrf, grfccprint); 229 return; 230 } 231 232 gp = (struct grf_softc *)dp; 233 gp->g_unit = device_unit(&gp->g_device); 234 grfsp[gp->g_unit] = gp; 235 236 if ((cfdata_grf != NULL) && (gp->g_unit == congrf.g_unit)) { 237 /* 238 * We inited earlier just copy the info, take care 239 * not to copy the device struct though. 240 */ 241 memcpy(&gp->g_display, &congrf.g_display, 242 (char *)&gp[1] - (char *)&gp->g_display); 243 } else { 244 gp->g_grfdev = makedev(maj, gp->g_unit); 245 gp->g_itedev = (dev_t)-1; 246 gp->g_flags = GF_ALIVE; 247 gp->g_mode = grf_mode; 248 gp->g_conpri = 0; 249 gp->g_viewdev = gp->g_unit; 250 grfcc_iteinit(gp); 251 grf_viewsync(gp); 252 } 253 254 printf(": width %d height %d", gp->g_display.gd_dwidth, 255 gp->g_display.gd_dheight); 256 if (gp->g_display.gd_colors == 2) 257 printf(" monochrome\n"); 258 else 259 printf(" colors %d\n", gp->g_display.gd_colors); 260 261 /* 262 * try and attach an ite 263 */ 264 config_found(dp, gp, grfccprint); 265 266 /* 267 * If attaching the first unit, go ahead and 'find' the rest of us 268 */ 269 if (first_attach) { 270 first_attach = 0; 271 grf_auxp.from_bus_match = 0; 272 for (grf_auxp.unit=1; grf_auxp.unit < NGRFCC; grf_auxp.unit++) { 273 config_found(pdp, &grf_auxp, grf_bus_auxp->busprint); 274 } 275 } 276 } 277 278 int 279 grfccprint(void *auxp, const char *pnp) 280 { 281 282 if (pnp) 283 aprint_normal("ite at %s", pnp); 284 return UNCONF; 285 } 286 287 /* 288 * called from grf_cc to return console priority 289 */ 290 int 291 grfcc_cnprobe(void) 292 { 293 return CN_INTERNAL; 294 } 295 /* 296 * called from grf_cc to init ite portion of 297 * grf_softc struct 298 */ 299 void 300 grfcc_iteinit(struct grf_softc *gp) 301 { 302 303 gp->g_itecursor = cursor32; 304 gp->g_iteputc = putc8; 305 gp->g_iteclear = clear8; 306 gp->g_itescroll = scroll8; 307 gp->g_iteinit = view_init; 308 gp->g_itedeinit = view_deinit; 309 } 310 311 static void 312 view_deinit(struct ite_softc *ip) 313 { 314 ip->flags &= ~ITE_INITED; 315 } 316 317 static void 318 view_init(register struct ite_softc *ip) 319 { 320 struct itewinsize wsz; 321 ipriv_t *cci; 322 323 if ((cci = ip->priv) != NULL) 324 return; 325 326 ip->itexx_ioctl = itecc_ioctl; 327 328 #if defined(KFONT_8X8) 329 ip->font = font_info_8x8; 330 #else 331 ip->font = font_info_8x16; 332 #endif 333 334 /* Find the correct set of rendering routines for this font. */ 335 if (ip->font.width != 8) 336 panic("kernel font size not supported"); 337 338 if (!atari_realconfig) 339 ip->priv = cci = &con_ipriv; 340 else 341 ip->priv = cci = malloc(sizeof(*cci), M_DEVBUF, M_WAITOK); 342 if (cci == NULL) 343 panic("No memory for ite-view"); 344 memset(cci, 0, sizeof(*cci)); 345 346 cci->cursor_opt = 0; 347 cci->row_ptr = NULL; 348 cci->column_offset = NULL; 349 350 wsz.x = ite_default_x; 351 wsz.y = ite_default_y; 352 wsz.width = ite_default_width; 353 wsz.height = ite_default_height; 354 wsz.depth = ite_default_depth; 355 356 ite_newsize (ip, &wsz); 357 358 /* 359 * Only console will be turned on by default.. 360 */ 361 if (ip->flags & ITE_ISCONS) 362 ip->grf->g_mode(ip->grf, GM_GRFON, NULL, 0, 0); 363 } 364 365 static int 366 ite_newsize(struct ite_softc *ip, struct itewinsize *winsz) 367 { 368 struct view_size vs; 369 ipriv_t *cci = ip->priv; 370 u_long i, j; 371 int error = 0; 372 view_t *view; 373 extern const struct cdevsw view_cdevsw; 374 375 vs.x = winsz->x; 376 vs.y = winsz->y; 377 vs.width = winsz->width; 378 vs.height = winsz->height; 379 vs.depth = winsz->depth; 380 381 error = (*view_cdevsw.d_ioctl)(ip->grf->g_viewdev, VIOCSSIZE, 382 (void *)&vs, 0, NOLWP); 383 view = viewview(ip->grf->g_viewdev); 384 385 /* 386 * Reinitialize our structs 387 */ 388 ip->cols = view->display.width / ip->font.width; 389 ip->rows = view->display.height / ip->font.height; 390 391 /* 392 * save new values so that future opens use them 393 * this may not be correct when we implement Virtual Consoles 394 */ 395 ite_default_height = view->display.height; 396 ite_default_width = view->display.width; 397 ite_default_x = view->display.x; 398 ite_default_y = view->display.y; 399 ite_default_depth = view->bitmap->depth; 400 401 if (cci->row_ptr && (cci->row_ptr != con_rows)) { 402 free(cci->row_ptr, M_DEVBUF); 403 cci->row_ptr = NULL; 404 } 405 if (cci->column_offset && (cci->column_offset != con_columns)) { 406 free(cci->column_offset, M_DEVBUF); 407 cci->column_offset = NULL; 408 } 409 410 if (!atari_realconfig) { 411 cci->row_ptr = con_rows; 412 cci->column_offset = con_columns; 413 } else { 414 cci->row_ptr = malloc(sizeof(u_char *) * ip->rows, 415 M_DEVBUF, M_NOWAIT); 416 cci->column_offset = malloc(sizeof(u_int) * ip->cols, 417 M_DEVBUF, M_NOWAIT); 418 } 419 420 if (!cci->row_ptr || !cci->column_offset) 421 panic("No memory for ite-view"); 422 423 cci->width = view->bitmap->bytes_per_row << 3; 424 cci->underline = ip->font.baseline + 1; 425 cci->row_offset = view->bitmap->bytes_per_row; 426 cci->ft_x = ip->font.width; 427 cci->ft_y = ip->font.height; 428 cci->row_bytes = cci->row_offset * cci->ft_y; 429 cci->row_ptr[0] = view->bitmap->plane; 430 for (i = 1; i < ip->rows; i++) 431 cci->row_ptr[i] = cci->row_ptr[i - 1] + cci->row_bytes; 432 433 /* 434 * Initialize the column offsets to point at the correct location 435 * in the first plane. This definitely assumes a font width of 8! 436 */ 437 j = view->bitmap->depth * 2; 438 cci->column_offset[0] = 0; 439 for (i = 1; i < ip->cols; i++) 440 cci->column_offset[i] = ((i >> 1) * j) + (i & 1); 441 442 /* initialize the font cell pointers */ 443 cci->font_cell[ip->font.font_lo] = ip->font.font_p; 444 for (i = ip->font.font_lo + 1; i <= ip->font.font_hi; i++) 445 cci->font_cell[i] = cci->font_cell[i - 1] + ip->font.height; 446 447 return error; 448 } 449 450 int 451 itecc_ioctl(struct ite_softc *ip, u_long cmd, void * addr, int flag, 452 struct lwp *l) 453 { 454 struct winsize ws; 455 struct itewinsize *is; 456 int error = 0; 457 view_t *view = viewview(ip->grf->g_viewdev); 458 extern const struct cdevsw ite_cdevsw; 459 extern const struct cdevsw view_cdevsw; 460 461 switch (cmd) { 462 case ITEIOCSWINSZ: 463 is = (struct itewinsize *)addr; 464 465 if (ite_newsize(ip, is)) 466 error = ENOMEM; 467 else { 468 view = viewview(ip->grf->g_viewdev); 469 ws.ws_row = ip->rows; 470 ws.ws_col = ip->cols; 471 ws.ws_xpixel = view->display.width; 472 ws.ws_ypixel = view->display.height; 473 ite_reset(ip); 474 /* 475 * XXX tell tty about the change 476 * XXX this is messy, but works 477 */ 478 (*ite_cdevsw.d_ioctl)(ip->grf->g_itedev, TIOCSWINSZ, 479 (void *)&ws, 0, l); 480 } 481 break; 482 case VIOCSCMAP: 483 case VIOCGCMAP: 484 /* 485 * XXX watchout for that NOLWP. its not really the kernel 486 * XXX talking these two commands don't use the proc pointer 487 * XXX though. 488 */ 489 error = (*view_cdevsw.d_ioctl)(ip->grf->g_viewdev, cmd, addr, 490 flag, NOLWP); 491 break; 492 default: 493 error = EPASSTHROUGH; 494 break; 495 } 496 return error; 497 } 498 499 static void 500 cursor32(struct ite_softc *ip, int flag) 501 { 502 int cend; 503 u_char *pl; 504 ipriv_t *cci; 505 506 cci = ip->priv; 507 508 if (flag == END_CURSOROPT) 509 cci->cursor_opt--; 510 else if (flag == START_CURSOROPT) { 511 if (!cci->cursor_opt) 512 cursor32(ip, ERASE_CURSOR); 513 cci->cursor_opt++; 514 return; /* if we are already opted. */ 515 } 516 517 if (cci->cursor_opt) 518 return; /* if we are still nested. */ 519 /* else we draw the cursor. */ 520 521 if (flag != DRAW_CURSOR && flag != END_CURSOROPT) { 522 /* 523 * erase the cursor 524 */ 525 cend = ip->font.height - 1; 526 pl = cci->column_offset[ip->cursorx] 527 + cci->row_ptr[ip->cursory]; 528 __asm volatile 529 ("1: notb %0@ ; addaw %4,%0\n\t" 530 "dbra %1,1b" 531 : "=a" (pl), "=d" (cend) 532 : "0" (pl), "1" (cend), 533 "d" (cci->row_offset) 534 ); 535 } 536 537 if (flag != DRAW_CURSOR && flag != MOVE_CURSOR && flag != END_CURSOROPT) 538 return; 539 540 /* 541 * draw the cursor 542 */ 543 cend = min(ip->curx, ip->cols - 1); 544 if (flag == DRAW_CURSOR 545 && ip->cursorx == cend && ip->cursory == ip->cury) 546 return; 547 ip->cursorx = cend; 548 ip->cursory = ip->cury; 549 cend = ip->font.height - 1; 550 pl = cci->column_offset[ip->cursorx] 551 + cci->row_ptr[ip->cursory]; 552 553 __asm volatile 554 ("1: notb %0@ ; addaw %4,%0\n\t" 555 "dbra %1,1b" 556 : "=a" (pl), "=d" (cend) 557 : "0" (pl), "1" (cend), 558 "d" (cci->row_offset) 559 ); 560 } 561 562 static void 563 putc8(struct ite_softc *ip, int c, int dy, int dx, int mode) 564 { 565 ipriv_t *cci = (ipriv_t *)ip->priv; 566 u_char *pl = cci->column_offset[dx] + cci->row_ptr[dy]; 567 u_int fh = cci->ft_y; 568 u_int ro = cci->row_offset; 569 u_char eor_mask; 570 u_char bl, tmp, ul; 571 u_char *ft; 572 573 if (c < ip->font.font_lo || c > ip->font.font_hi) 574 return; 575 576 ft = cci->font_cell[c]; 577 578 if (!mode) { 579 while (fh--) { 580 *pl = *ft++; pl += ro; 581 } 582 return; 583 } 584 585 eor_mask = (mode & ATTR_INV) ? 0xff : 0x00; 586 bl = (mode & ATTR_BOLD) ? 1 : 0; 587 ul = (mode & ATTR_UL) ? fh - cci->underline : fh; 588 for (; fh--; pl += ro) { 589 if (fh != ul) { 590 tmp = *ft++; 591 if (bl) 592 tmp |= (tmp >> 1); 593 *pl = tmp ^ eor_mask; 594 } else { 595 *pl = 0xff ^ eor_mask; 596 ft++; 597 } 598 } 599 } 600 601 static void 602 clear8(struct ite_softc *ip, int sy, int sx, int h, int w) 603 { 604 ipriv_t *cci = (ipriv_t *) ip->priv; 605 view_t *v = viewview(ip->grf->g_viewdev); 606 bmap_t *bm = v->bitmap; 607 608 if ((sx == 0) && (w == ip->cols)) { 609 /* common case: clearing whole lines */ 610 while (h--) { 611 int i; 612 u_char *ptr = cci->row_ptr[sy]; 613 for (i = 0; i < ip->font.height; i++) { 614 memset(ptr, 0, bm->bytes_per_row); 615 ptr += bm->bytes_per_row; 616 } 617 sy++; 618 } 619 } else { 620 /* 621 * clearing only part of a line 622 * XXX could be optimized MUCH better, but is it worth the 623 * trouble? 624 */ 625 626 int i; 627 u_char *pls, *ple; 628 629 pls = cci->row_ptr[sy]; 630 ple = pls + cci->column_offset[sx + w - 1]; 631 pls = pls + cci->column_offset[sx]; 632 633 for (i = ((ip->font.height) * h) - 1; i >= 0; i--) { 634 u_char *p = pls; 635 while (p <= ple) 636 *p++ = 0; 637 pls += bm->bytes_per_row; 638 ple += bm->bytes_per_row; 639 } 640 } 641 } 642 643 /* Note: sx is only relevant for SCROLL_LEFT or SCROLL_RIGHT. */ 644 static void 645 scroll8(register struct ite_softc *ip, register int sy, int sx, int count, 646 int dir) 647 { 648 bmap_t *bm = viewview(ip->grf->g_viewdev)->bitmap; 649 u_char *pl = ((ipriv_t *)ip->priv)->row_ptr[sy]; 650 651 if (dir == SCROLL_UP) { 652 int dy = sy - count; 653 654 cursor32(ip, ERASE_CURSOR); 655 scrollbmap(bm, 0, dy * ip->font.height, bm->bytes_per_row >> 3, 656 (ip->bottom_margin - dy + 1) * ip->font.height, 657 0, -(count * ip->font.height)); 658 } else if (dir == SCROLL_DOWN) { 659 cursor32(ip, ERASE_CURSOR); 660 scrollbmap(bm, 0, sy * ip->font.height, bm->bytes_per_row >> 3, 661 (ip->bottom_margin - sy + 1) * ip->font.height, 662 0, count * ip->font.height); 663 } else if (dir == SCROLL_RIGHT) { 664 int sofs = (ip->cols - count) * ip->font.width; 665 int dofs = (ip->cols) * ip->font.width; 666 int i, j; 667 668 cursor32(ip, ERASE_CURSOR); 669 for (j = ip->font.height - 1; j >= 0; j--) { 670 int sofs2 = sofs, dofs2 = dofs; 671 for (i = (ip->cols - (sx + count)) - 1; i >= 0; i--) { 672 int t; 673 sofs2 -= ip->font.width; 674 dofs2 -= ip->font.width; 675 __asm("bfextu %1@{%2:%3}, %0" : "=d" (t) 676 : "a" (pl), "d" (sofs2), 677 "d" (ip->font.width)); 678 __asm("bfins %3, %0@{%1:%2}" : 679 : "a" (pl), "d" (dofs2), 680 "d" (ip->font.width), "d" (t)); 681 } 682 pl += bm->bytes_per_row; 683 } 684 } else { /* SCROLL_LEFT */ 685 int sofs = (sx) * ip->font.width; 686 int dofs = (sx - count) * ip->font.width; 687 int i, j; 688 689 cursor32(ip, ERASE_CURSOR); 690 for (j = ip->font.height - 1; j >= 0; j--) { 691 int sofs2 = sofs, dofs2 = dofs; 692 for (i = (ip->cols - sx) - 1; i >= 0; i--) { 693 int t; 694 695 __asm("bfextu %1@{%2:%3}, %0" : "=d" (t) 696 : "a" (pl), "d" (sofs2), 697 "d" (ip->font.width)); 698 __asm("bfins %3, %0@{%1:%2}" : 699 : "a" (pl), "d" (dofs2), 700 "d" (ip->font.width), "d" (t)); 701 sofs2 += ip->font.width; 702 dofs2 += ip->font.width; 703 } 704 pl += bm->bytes_per_row; 705 } 706 } 707 } 708 709 static void 710 scrollbmap (bmap_t *bm, u_short x, u_short y, u_short width, u_short height, 711 short dx, short dy) 712 { 713 u_short lwpr = bm->bytes_per_row >> 2; 714 715 if (dx) { 716 /* FIX: */ 717 panic ("delta x not supported in scroll bitmap yet."); 718 } 719 720 if (dy == 0) { 721 return; 722 } 723 if (dy > 0) { 724 u_long *pl = (u_long *)bm->plane; 725 u_long *src_y = pl + (lwpr * y); 726 u_long *dest_y = pl + (lwpr * (y + dy)); 727 u_long count = lwpr * (height - dy); 728 u_long *clr_y = src_y; 729 u_long clr_count = dest_y - src_y; 730 u_long bc, cbc; 731 732 src_y += count - 1; 733 dest_y += count - 1; 734 735 bc = count >> 4; 736 count &= 0xf; 737 738 while (bc--) { 739 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 740 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 741 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 742 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 743 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 744 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 745 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 746 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 747 } 748 while (count--) 749 *dest_y-- = *src_y--; 750 751 cbc = clr_count >> 4; 752 clr_count &= 0xf; 753 754 while (cbc--) { 755 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 756 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 757 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 758 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 759 } 760 while (clr_count--) 761 *clr_y++ = 0; 762 } else { 763 u_long *pl = (u_long *)bm->plane; 764 u_long *src_y = pl + (lwpr * (y - dy)); 765 u_long *dest_y = pl + (lwpr * y); 766 long count = lwpr * (height + dy); 767 u_long *clr_y = dest_y + count; 768 u_long clr_count = src_y - dest_y; 769 u_long bc, cbc; 770 771 bc = count >> 4; 772 count &= 0xf; 773 774 while (bc--) { 775 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 776 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 777 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 778 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 779 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 780 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 781 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 782 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 783 } 784 while (count--) 785 *dest_y++ = *src_y++; 786 787 cbc = clr_count >> 4; 788 clr_count &= 0xf; 789 790 while (cbc--) { 791 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 792 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 793 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 794 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 795 } 796 while (clr_count--) 797 *clr_y++ = 0; 798 } 799 } 800
Indexes created Sat Sep 27 14:09:57 GMT 2025