ite_cc.c revision 1.29
1 /* $NetBSD: ite_cc.c,v 1.29 2009/03/14 15:36:03 dsl 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 1.29 2009/03/14 15:36:03 dsl 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(pdp, dp, auxp) 199 struct device *pdp, *dp; 200 void *auxp; 201 { 202 static struct grf_softc congrf; 203 static int first_attach = 1; 204 grf_auxp_t *grf_bus_auxp = auxp; 205 grf_auxp_t grf_auxp; 206 struct grf_softc *gp; 207 int maj; 208 extern const struct cdevsw grf_cdevsw; 209 210 /* 211 * find our major device number 212 */ 213 maj = cdevsw_lookup_major(&grf_cdevsw); 214 215 /* 216 * Handle exeption case: early console init 217 */ 218 if(dp == NULL) { 219 congrf.g_unit = cfdata_grf->cf_unit; 220 congrf.g_grfdev = makedev(maj, congrf.g_unit); 221 congrf.g_itedev = (dev_t)-1; 222 congrf.g_flags = GF_ALIVE; 223 congrf.g_mode = grf_mode; 224 congrf.g_conpri = grfcc_cnprobe(); 225 congrf.g_viewdev = congrf.g_unit; 226 grfcc_iteinit(&congrf); 227 grf_viewsync(&congrf); 228 229 /* Attach console ite */ 230 atari_config_found(cfdata_grf, NULL, &congrf, grfccprint); 231 return; 232 } 233 234 gp = (struct grf_softc *)dp; 235 gp->g_unit = device_unit(&gp->g_device); 236 grfsp[gp->g_unit] = gp; 237 238 if((cfdata_grf != NULL) && (gp->g_unit == congrf.g_unit)) { 239 /* 240 * We inited earlier just copy the info, take care 241 * not to copy the device struct though. 242 */ 243 bcopy(&congrf.g_display, &gp->g_display, 244 (char *)&gp[1] - (char *)&gp->g_display); 245 } 246 else { 247 gp->g_grfdev = makedev(maj, gp->g_unit); 248 gp->g_itedev = (dev_t)-1; 249 gp->g_flags = GF_ALIVE; 250 gp->g_mode = grf_mode; 251 gp->g_conpri = 0; 252 gp->g_viewdev = gp->g_unit; 253 grfcc_iteinit(gp); 254 grf_viewsync(gp); 255 } 256 257 printf(": width %d height %d", gp->g_display.gd_dwidth, 258 gp->g_display.gd_dheight); 259 if(gp->g_display.gd_colors == 2) 260 printf(" monochrome\n"); 261 else printf(" colors %d\n", gp->g_display.gd_colors); 262 263 /* 264 * try and attach an ite 265 */ 266 config_found(dp, gp, grfccprint); 267 268 /* 269 * If attaching the first unit, go ahead and 'find' the rest of us 270 */ 271 if (first_attach) { 272 first_attach = 0; 273 grf_auxp.from_bus_match = 0; 274 for (grf_auxp.unit=1; grf_auxp.unit < NGRFCC; grf_auxp.unit++) { 275 config_found(pdp, (void*)&grf_auxp, grf_bus_auxp->busprint); 276 } 277 } 278 } 279 280 int 281 grfccprint(void *auxp, const char *pnp) 282 { 283 if(pnp) 284 aprint_normal("ite at %s", pnp); 285 return(UNCONF); 286 } 287 288 /* 289 * called from grf_cc to return console priority 290 */ 291 int 292 grfcc_cnprobe() 293 { 294 return(CN_INTERNAL); 295 } 296 /* 297 * called from grf_cc to init ite portion of 298 * grf_softc struct 299 */ 300 void 301 grfcc_iteinit(struct grf_softc *gp) 302 { 303 304 gp->g_itecursor = cursor32; 305 gp->g_iteputc = putc8; 306 gp->g_iteclear = clear8; 307 gp->g_itescroll = scroll8; 308 gp->g_iteinit = view_init; 309 gp->g_itedeinit = view_deinit; 310 } 311 312 static void 313 view_deinit(struct ite_softc *ip) 314 { 315 ip->flags &= ~ITE_INITED; 316 } 317 318 static void 319 view_init(register struct ite_softc *ip) 320 { 321 struct itewinsize wsz; 322 ipriv_t *cci; 323 324 if((cci = ip->priv) != NULL) 325 return; 326 327 ip->itexx_ioctl = itecc_ioctl; 328 329 #if defined(KFONT_8X8) 330 ip->font = font_info_8x8; 331 #else 332 ip->font = font_info_8x16; 333 #endif 334 335 /* Find the correct set of rendering routines for this font. */ 336 if(ip->font.width != 8) 337 panic("kernel font size not supported"); 338 339 if(!atari_realconfig) 340 ip->priv = cci = &con_ipriv; 341 else ip->priv = cci = (ipriv_t*)malloc(sizeof(*cci), M_DEVBUF,M_WAITOK); 342 if(cci == NULL) 343 panic("No memory for ite-view"); 344 bzero(cci, 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 } 414 else { 415 cci->row_ptr = malloc(sizeof(u_char *) * ip->rows,M_DEVBUF,M_NOWAIT); 416 cci->column_offset = malloc(sizeof(u_int)*ip->cols,M_DEVBUF,M_NOWAIT); 417 } 418 419 if(!cci->row_ptr || !cci->column_offset) 420 panic("No memory for ite-view"); 421 422 cci->width = view->bitmap->bytes_per_row << 3; 423 cci->underline = ip->font.baseline + 1; 424 cci->row_offset = view->bitmap->bytes_per_row; 425 cci->ft_x = ip->font.width; 426 cci->ft_y = ip->font.height; 427 cci->row_bytes = cci->row_offset * cci->ft_y; 428 cci->row_ptr[0] = view->bitmap->plane; 429 for(i = 1; i < ip->rows; i++) 430 cci->row_ptr[i] = cci->row_ptr[i-1] + cci->row_bytes; 431 432 /* 433 * Initialize the column offsets to point at the correct location 434 * in the first plane. This definitely assumes a font width of 8! 435 */ 436 j = view->bitmap->depth * 2; 437 cci->column_offset[0] = 0; 438 for(i = 1; i < ip->cols; i++) 439 cci->column_offset[i] = ((i >> 1) * j) + (i & 1); 440 441 /* initialize the font cell pointers */ 442 cci->font_cell[ip->font.font_lo] = ip->font.font_p; 443 for(i = ip->font.font_lo+1; i <= ip->font.font_hi; i++) 444 cci->font_cell[i] = cci->font_cell[i-1] + ip->font.height; 445 446 return(error); 447 } 448 449 int 450 itecc_ioctl(struct ite_softc *ip, u_long cmd, void * addr, int flag, struct lwp *l) 451 { 452 struct winsize ws; 453 struct itewinsize *is; 454 int error = 0; 455 view_t *view = viewview(ip->grf->g_viewdev); 456 extern const struct cdevsw ite_cdevsw; 457 extern const struct cdevsw view_cdevsw; 458 459 switch (cmd) { 460 case ITEIOCSWINSZ: 461 is = (struct itewinsize *)addr; 462 463 if(ite_newsize(ip, is)) 464 error = ENOMEM; 465 else { 466 view = viewview(ip->grf->g_viewdev); 467 ws.ws_row = ip->rows; 468 ws.ws_col = ip->cols; 469 ws.ws_xpixel = view->display.width; 470 ws.ws_ypixel = view->display.height; 471 ite_reset(ip); 472 /* 473 * XXX tell tty about the change 474 * XXX this is messy, but works 475 */ 476 (*ite_cdevsw.d_ioctl)(ip->grf->g_itedev, TIOCSWINSZ, 477 (void *)&ws, 0, l); 478 } 479 break; 480 case VIOCSCMAP: 481 case VIOCGCMAP: 482 /* 483 * XXX watchout for that NOLWP. its not really the kernel 484 * XXX talking these two commands don't use the proc pointer 485 * XXX though. 486 */ 487 error = (*view_cdevsw.d_ioctl)(ip->grf->g_viewdev, cmd, addr, 488 flag, NOLWP); 489 break; 490 default: 491 error = EPASSTHROUGH; 492 break; 493 } 494 return (error); 495 } 496 497 static void 498 cursor32(struct ite_softc *ip, int flag) 499 { 500 int cend; 501 u_char *pl; 502 ipriv_t *cci; 503 504 cci = ip->priv; 505 506 if(flag == END_CURSOROPT) 507 cci->cursor_opt--; 508 else if(flag == START_CURSOROPT) { 509 if(!cci->cursor_opt) 510 cursor32(ip, ERASE_CURSOR); 511 cci->cursor_opt++; 512 return; /* if we are already opted. */ 513 } 514 515 if(cci->cursor_opt) 516 return; /* if we are still nested. */ 517 /* else we draw the cursor. */ 518 519 if(flag != DRAW_CURSOR && flag != END_CURSOROPT) { 520 /* 521 * erase the cursor 522 */ 523 cend = ip->font.height-1; 524 pl = cci->column_offset[ip->cursorx] 525 + cci->row_ptr[ip->cursory]; 526 __asm volatile 527 ("1: notb %0@ ; addaw %4,%0\n\t" 528 "dbra %1,1b" 529 : "=a" (pl), "=d" (cend) 530 : "0" (pl), "1" (cend), 531 "d" (cci->row_offset) 532 ); 533 } 534 535 if(flag != DRAW_CURSOR && flag != MOVE_CURSOR && flag != END_CURSOROPT) 536 return; 537 538 /* 539 * draw the cursor 540 */ 541 cend = min(ip->curx, ip->cols-1); 542 if (flag == DRAW_CURSOR 543 && ip->cursorx == cend && ip->cursory == ip->cury) 544 return; 545 ip->cursorx = cend; 546 ip->cursory = ip->cury; 547 cend = ip->font.height-1; 548 pl = cci->column_offset[ip->cursorx] 549 + cci->row_ptr[ip->cursory]; 550 551 __asm volatile 552 ("1: notb %0@ ; addaw %4,%0\n\t" 553 "dbra %1,1b" 554 : "=a" (pl), "=d" (cend) 555 : "0" (pl), "1" (cend), 556 "d" (cci->row_offset) 557 ); 558 } 559 560 static void 561 putc8(struct ite_softc *ip, int c, int dy, int dx, int mode) 562 { 563 register ipriv_t *cci = (ipriv_t *)ip->priv; 564 register u_char *pl = cci->column_offset[dx] + cci->row_ptr[dy]; 565 register u_int fh = cci->ft_y; 566 register u_int ro = cci->row_offset; 567 register u_char eor_mask; 568 register u_char bl, tmp, ul; 569 register u_char *ft; 570 571 if(c < ip->font.font_lo || c > ip->font.font_hi) 572 return; 573 574 ft = cci->font_cell[c]; 575 576 if(!mode) { 577 while(fh--) { 578 *pl = *ft++; pl += ro; 579 } 580 return; 581 } 582 583 eor_mask = (mode & ATTR_INV) ? 0xff : 0x00; 584 bl = (mode & ATTR_BOLD) ? 1 : 0; 585 ul = (mode & ATTR_UL) ? fh - cci->underline : fh; 586 for(; fh--; pl += ro) { 587 if(fh != ul) { 588 tmp = *ft++; 589 if(bl) 590 tmp |= (tmp >> 1); 591 *pl = tmp ^ eor_mask; 592 } 593 else { 594 *pl = 0xff ^ eor_mask; 595 ft++; 596 } 597 } 598 } 599 600 static void 601 clear8(struct ite_softc *ip, int sy, int sx, int h, int w) 602 { 603 ipriv_t *cci = (ipriv_t *) ip->priv; 604 view_t *v = viewview(ip->grf->g_viewdev); 605 bmap_t *bm = v->bitmap; 606 607 if((sx == 0) && (w == ip->cols)) { 608 /* common case: clearing whole lines */ 609 while (h--) { 610 int i; 611 u_char *ptr = cci->row_ptr[sy]; 612 for(i = 0; i < ip->font.height; i++) { 613 bzero(ptr, bm->bytes_per_row); 614 ptr += bm->bytes_per_row; 615 } 616 sy++; 617 } 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(ip, sy, sx, count, dir) 646 register struct ite_softc *ip; 647 register int sy; 648 int dir, sx, count; 649 { 650 bmap_t *bm = viewview(ip->grf->g_viewdev)->bitmap; 651 u_char *pl = ((ipriv_t *)ip->priv)->row_ptr[sy]; 652 653 if(dir == SCROLL_UP) { 654 int dy = sy - count; 655 656 cursor32(ip, ERASE_CURSOR); 657 scrollbmap(bm, 0, dy*ip->font.height, bm->bytes_per_row >> 3, 658 (ip->bottom_margin-dy+1)*ip->font.height, 659 0, -(count*ip->font.height)); 660 } 661 else if(dir == SCROLL_DOWN) { 662 cursor32(ip, ERASE_CURSOR); 663 scrollbmap(bm, 0, sy*ip->font.height, bm->bytes_per_row >> 3, 664 (ip->bottom_margin-sy+1)*ip->font.height, 665 0, count*ip->font.height); 666 } 667 else if(dir == SCROLL_RIGHT) { 668 int sofs = (ip->cols - count) * ip->font.width; 669 int dofs = (ip->cols) * ip->font.width; 670 int i, j; 671 672 cursor32(ip, ERASE_CURSOR); 673 for(j = ip->font.height-1; j >= 0; j--) { 674 int sofs2 = sofs, dofs2 = dofs; 675 for (i = (ip->cols - (sx + count))-1; i >= 0; i--) { 676 int t; 677 sofs2 -= ip->font.width; 678 dofs2 -= ip->font.width; 679 __asm("bfextu %1@{%2:%3},%0" : "=d" (t) 680 : "a" (pl), "d" (sofs2), "d" (ip->font.width)); 681 __asm("bfins %3,%0@{%1:%2}" : 682 : "a" (pl), "d" (dofs2), "d" (ip->font.width), 683 "d" (t)); 684 } 685 pl += bm->bytes_per_row; 686 } 687 } 688 else { /* SCROLL_LEFT */ 689 int sofs = (sx) * ip->font.width; 690 int dofs = (sx - count) * ip->font.width; 691 int i, j; 692 693 cursor32(ip, ERASE_CURSOR); 694 for(j = ip->font.height-1; j >= 0; j--) { 695 int sofs2 = sofs, dofs2 = dofs; 696 for(i = (ip->cols - sx)-1; i >= 0; i--) { 697 int t; 698 699 __asm("bfextu %1@{%2:%3},%0" : "=d" (t) 700 : "a" (pl), "d" (sofs2), "d" (ip->font.width)); 701 __asm("bfins %3,%0@{%1:%2}" 702 : : "a" (pl), "d" (dofs2),"d" (ip->font.width), 703 "d" (t)); 704 sofs2 += ip->font.width; 705 dofs2 += ip->font.width; 706 } 707 pl += bm->bytes_per_row; 708 } 709 } 710 } 711 712 static void 713 scrollbmap (bmap_t *bm, u_short x, u_short y, u_short width, u_short height, short dx, short dy) 714 { 715 u_short lwpr = bm->bytes_per_row >> 2; 716 717 if(dx) { 718 /* FIX: */ panic ("delta x not supported in scroll bitmap yet."); 719 } 720 721 if(dy == 0) { 722 return; 723 } 724 if(dy > 0) { 725 u_long *pl = (u_long *)bm->plane; 726 u_long *src_y = pl + (lwpr*y); 727 u_long *dest_y = pl + (lwpr*(y+dy)); 728 u_long count = lwpr*(height-dy); 729 u_long *clr_y = src_y; 730 u_long clr_count = dest_y - src_y; 731 u_long bc, cbc; 732 733 src_y += count - 1; 734 dest_y += count - 1; 735 736 bc = count >> 4; 737 count &= 0xf; 738 739 while (bc--) { 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 *dest_y-- = *src_y--; *dest_y-- = *src_y--; 748 } 749 while (count--) 750 *dest_y-- = *src_y--; 751 752 cbc = clr_count >> 4; 753 clr_count &= 0xf; 754 755 while (cbc--) { 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 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 760 } 761 while(clr_count--) 762 *clr_y++ = 0; 763 } 764 else { 765 u_long *pl = (u_long *)bm->plane; 766 u_long *src_y = pl + (lwpr*(y-dy)); 767 u_long *dest_y = pl + (lwpr*y); 768 long count = lwpr*(height + dy); 769 u_long *clr_y = dest_y + count; 770 u_long clr_count = src_y - dest_y; 771 u_long bc, cbc; 772 773 bc = count >> 4; 774 count &= 0xf; 775 776 while(bc--) { 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 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 784 *dest_y++ = *src_y++; *dest_y++ = *src_y++; 785 } 786 while(count--) 787 *dest_y++ = *src_y++; 788 789 cbc = clr_count >> 4; 790 clr_count &= 0xf; 791 792 while (cbc--) { 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 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 796 *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; *clr_y++ = 0; 797 } 798 while (clr_count--) 799 *clr_y++ = 0; 800 } 801 } 802
Indexes created Sat Sep 27 21:09:56 GMT 2025