igsfb.c revision 1.6
1 /* $NetBSD: igsfb.c,v 1.6 2002/09/24 18:17:24 uwe Exp $ */ 2 3 /* 4 * Copyright (c) 2002 Valeriy E. Ushakov 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 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 /* 31 * Integraphics Systems IGA 168x and CyberPro series. 32 * Only tested on IGA 1682 in Krups JavaStation-NC. 33 */ 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: igsfb.c,v 1.6 2002/09/24 18:17:24 uwe Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/device.h> 41 #include <sys/malloc.h> 42 #include <sys/ioctl.h> 43 #include <sys/buf.h> 44 #include <uvm/uvm_extern.h> 45 46 #include <machine/bus.h> 47 48 #include <dev/wscons/wsdisplayvar.h> 49 #include <dev/rasops/rasops.h> 50 #include <dev/wsfont/wsfont.h> 51 #include <dev/wscons/wsconsio.h> 52 53 #include <dev/ic/igsfbreg.h> 54 #include <dev/ic/igsfbvar.h> 55 56 57 /* 58 * wsscreen 59 */ 60 61 /* filled from rasops_info in igsfb_common_init */ 62 static struct wsscreen_descr igsfb_stdscreen = { 63 "std", /* name */ 64 0, 0, /* ncols, nrows */ 65 NULL, /* textops */ 66 0, 0, /* fontwidth, fontheight */ 67 0 /* capabilities */ 68 }; 69 70 static const struct wsscreen_descr *_igsfb_scrlist[] = { 71 &igsfb_stdscreen, 72 }; 73 74 static const struct wsscreen_list igsfb_screenlist = { 75 sizeof(_igsfb_scrlist) / sizeof(struct wsscreen_descr *), 76 _igsfb_scrlist 77 }; 78 79 80 /* 81 * wsdisplay_accessops 82 */ 83 84 static int igsfb_ioctl(void *, u_long, caddr_t, int, struct proc *); 85 static paddr_t igsfb_mmap(void *, off_t, int); 86 87 static int igsfb_alloc_screen(void *, const struct wsscreen_descr *, 88 void **, int *, int *, long *); 89 static void igsfb_free_screen(void *, void *); 90 static int igsfb_show_screen(void *, void *, int, 91 void (*) (void *, int, int), void *); 92 93 static const struct wsdisplay_accessops igsfb_accessops = { 94 igsfb_ioctl, 95 igsfb_mmap, 96 igsfb_alloc_screen, 97 igsfb_free_screen, 98 igsfb_show_screen, 99 NULL /* load_font */ 100 }; 101 102 103 /* 104 * internal functions 105 */ 106 static void igsfb_common_init(struct igsfb_softc *); 107 static void igsfb_init_bit_tables(struct igsfb_softc *); 108 static void igsfb_blank_screen(struct igsfb_softc *, int); 109 static int igsfb_get_cmap(struct igsfb_softc *, struct wsdisplay_cmap *); 110 static int igsfb_set_cmap(struct igsfb_softc *, struct wsdisplay_cmap *); 111 static void igsfb_update_cmap(struct igsfb_softc *sc, u_int, u_int); 112 static void igsfb_set_curpos(struct igsfb_softc *, 113 struct wsdisplay_curpos *); 114 static void igsfb_update_curpos(struct igsfb_softc *); 115 static int igsfb_get_cursor(struct igsfb_softc *, 116 struct wsdisplay_cursor *); 117 static int igsfb_set_cursor(struct igsfb_softc *, 118 struct wsdisplay_cursor *); 119 static void igsfb_update_cursor(struct igsfb_softc *, u_int); 120 static void igsfb_convert_cursor_data(struct igsfb_softc *, u_int, u_int); 121 122 /* 123 * bit expanders 124 */ 125 static u_int16_t igsfb_spread_bits_8(u_int8_t); 126 127 static struct igs_bittab *igsfb_bittab = NULL; 128 static struct igs_bittab *igsfb_bittab_bswap = NULL; 129 130 131 /* 132 * Finish off the attach. Bus specific attach method should have 133 * enabled io and memory accesses and mapped io and cop registers. 134 */ 135 void 136 igsfb_common_attach(sc, isconsole) 137 struct igsfb_softc *sc; 138 int isconsole; 139 { 140 bus_space_handle_t tmph; 141 u_int8_t *p; 142 int need_bswap; 143 char *bswap_msg; 144 bus_addr_t fbaddr; 145 bus_addr_t craddr; 146 off_t croffset; 147 struct rasops_info *ri; 148 struct wsemuldisplaydev_attach_args waa; 149 u_int8_t busctl, curctl; 150 151 busctl = igs_ext_read(sc->sc_iot, sc->sc_ioh, IGS_EXT_BUS_CTL); 152 if (busctl & 0x2) 153 sc->sc_vmemsz = 4 << 20; 154 else if (busctl & 0x1) 155 sc->sc_vmemsz = 2 << 20; 156 else 157 sc->sc_vmemsz = 1 << 20; 158 159 /* 160 * Check for endianness mismatch by writing a word at the end 161 * of video memory (off-screen) and reading it back byte-by-byte. 162 */ 163 if (bus_space_map(sc->sc_memt, 164 sc->sc_memaddr + sc->sc_vmemsz - sizeof(u_int32_t), 165 sizeof(u_int32_t), 166 sc->sc_memflags | BUS_SPACE_MAP_LINEAR, 167 &tmph) != 0) 168 { 169 printf("unable to map video memory for endianness test\n"); 170 return; 171 } 172 173 p = bus_space_vaddr(sc->sc_memt, tmph); 174 #if BYTE_ORDER == BIG_ENDIAN 175 *((u_int32_t *)p) = 0x12345678; 176 #else 177 *((u_int32_t *)p) = 0x78563412; 178 #endif 179 if (p[0] == 0x12 && p[1] == 0x34 && p[2] == 0x56 && p[3] == 0x78) 180 need_bswap = 0; 181 else 182 need_bswap = 1; 183 184 bus_space_unmap(sc->sc_memt, tmph, sizeof(u_int32_t)); 185 186 /* 187 * On CyberPro we can use magic bswap bit in linear address. 188 */ 189 fbaddr = sc->sc_memaddr; 190 if (need_bswap) 191 if (sc->sc_is2k) { 192 fbaddr |= IGS_MEM_BE_SELECT; 193 bswap_msg = ", hw bswap"; 194 } else { 195 sc->sc_hwflags |= IGSFB_HW_BSWAP; 196 bswap_msg = ", sw bswap"; /* sic! */ 197 } 198 else 199 bswap_msg = ""; 200 201 /* 202 * Don't map in all N megs, just the amount we need for wsscreen 203 */ 204 sc->sc_fbsz = 1024 * 768; /* XXX: 8bpp specific */ 205 if (bus_space_map(sc->sc_memt, fbaddr, sc->sc_fbsz, 206 sc->sc_memflags | BUS_SPACE_MAP_LINEAR, 207 &sc->sc_fbh) != 0) 208 { 209 bus_space_unmap(sc->sc_iot, sc->sc_ioh, IGS_REG_SIZE); 210 printf("unable to map framebuffer\n"); 211 return; 212 } 213 214 /* 215 * 1Kb for cursor sprite data at the very end of video memory 216 */ 217 croffset = sc->sc_vmemsz - IGS_CURSOR_DATA_SIZE; 218 craddr = fbaddr + croffset; 219 if (bus_space_map(sc->sc_memt, craddr, IGS_CURSOR_DATA_SIZE, 220 sc->sc_memflags | BUS_SPACE_MAP_LINEAR, 221 &sc->sc_crh) != 0) 222 { 223 bus_space_unmap(sc->sc_iot, sc->sc_ioh, IGS_REG_SIZE); 224 bus_space_unmap(sc->sc_memt, sc->sc_fbh, sc->sc_fbsz); 225 printf("unable to map cursor sprite region\n"); 226 return; 227 } 228 229 /* 230 * Tell device where cursor sprite data are located in linear 231 * space (it takes data offset in 1k units). 232 */ 233 croffset >>= 10; 234 igs_ext_write(sc->sc_iot, sc->sc_ioh, 235 IGS_EXT_SPRITE_DATA_LO, croffset & 0xff); 236 igs_ext_write(sc->sc_iot, sc->sc_ioh, 237 IGS_EXT_SPRITE_DATA_HI, (croffset >> 8) & 0xf); 238 239 memset(&sc->sc_cursor, 0, sizeof(struct igs_hwcursor)); 240 memset(bus_space_vaddr(sc->sc_memt, sc->sc_crh), 241 0xaa, IGS_CURSOR_DATA_SIZE); /* transparent */ 242 243 curctl = igs_ext_read(sc->sc_iot, sc->sc_ioh, IGS_EXT_SPRITE_CTL); 244 curctl |= IGS_EXT_SPRITE_64x64; 245 curctl &= ~IGS_EXT_SPRITE_VISIBLE; 246 igs_ext_write(sc->sc_iot, sc->sc_ioh, IGS_EXT_SPRITE_CTL, curctl); 247 248 /* bit expanders for cursor sprite data */ 249 igsfb_init_bit_tables(sc); 250 251 /* alloc and cross-link raster ops */ 252 ri = malloc(sizeof(struct rasops_info), M_DEVBUF, M_NOWAIT | M_ZERO); 253 if (ri == NULL) 254 panic("unable to allocate rasops"); 255 ri->ri_hw = sc; 256 sc->sc_ri = ri; 257 258 igsfb_common_init(sc); 259 260 /* 261 * XXX: console attachment needs rethinking 262 */ 263 if (isconsole) { 264 long defattr; 265 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 266 wsdisplay_cnattach(&igsfb_stdscreen, ri, 0, 0, defattr); 267 } 268 269 270 printf("%s: %dMB%s, %dx%d, %dbpp\n", 271 sc->sc_dev.dv_xname, 272 (u_int32_t)(sc->sc_vmemsz >> 20), 273 bswap_msg, 274 ri->ri_width, ri->ri_height, ri->ri_depth); 275 276 /* attach wsdisplay */ 277 waa.console = isconsole; 278 waa.scrdata = &igsfb_screenlist; 279 waa.accessops = &igsfb_accessops; 280 waa.accesscookie = sc; 281 282 config_found(&sc->sc_dev, &waa, wsemuldisplaydevprint); 283 } 284 285 286 /* 287 * Helper function for igsfb_init_bit_tables(). 288 */ 289 static u_int16_t 290 igsfb_spread_bits_8(b) 291 u_int8_t b; 292 { 293 u_int16_t s = b; 294 295 s = ((s & 0x00f0) << 4) | (s & 0x000f); 296 s = ((s & 0x0c0c) << 2) | (s & 0x0303); 297 s = ((s & 0x2222) << 1) | (s & 0x1111); 298 return (s); 299 } 300 301 302 /* 303 * Cursor sprite data are in 2bpp. Incoming image/mask are in 1bpp. 304 * Prebuild tables to expand 1bpp->2bpp with bswapping if neccessary. 305 */ 306 static void 307 igsfb_init_bit_tables(sc) 308 struct igsfb_softc *sc; 309 { 310 struct igs_bittab *tab; 311 u_int i; 312 313 if (sc->sc_hwflags & IGSFB_HW_BSWAP) { 314 if (igsfb_bittab_bswap == NULL) { 315 tab = malloc(sizeof(struct igs_bittab), 316 M_DEVBUF, M_NOWAIT); 317 for (i = 0; i < 256; ++i) { 318 u_int16_t s = igsfb_spread_bits_8(i); 319 tab->iexpand[i] = bswap16(s); 320 tab->mexpand[i] = bswap16((s << 1) | s); 321 } 322 igsfb_bittab_bswap = tab; 323 } 324 sc->sc_bittab = igsfb_bittab_bswap; 325 } else { 326 if (igsfb_bittab == NULL) { 327 tab = malloc(sizeof(struct igs_bittab), 328 M_DEVBUF, M_NOWAIT); 329 for (i = 0; i < 256; ++i) { 330 u_int16_t s = igsfb_spread_bits_8(i); 331 tab->iexpand[i] = s; 332 tab->mexpand[i] = (s << 1) | s; 333 } 334 igsfb_bittab = tab; 335 } 336 sc->sc_bittab = igsfb_bittab; 337 } 338 } 339 340 /* 341 * I/O and memory are mapped, video enabled, structures allocated. 342 */ 343 static void 344 igsfb_common_init(sc) 345 struct igsfb_softc *sc; 346 { 347 bus_space_tag_t iot = sc->sc_iot; 348 bus_space_handle_t ioh = sc->sc_ioh; 349 struct rasops_info *ri = sc->sc_ri; 350 int wsfcookie; 351 const u_int8_t *p; 352 int i; 353 354 sc->sc_blanked = 0; 355 356 ri->ri_flg = RI_CENTER | RI_CLEAR; 357 if (sc->sc_hwflags & IGSFB_HW_BSWAP) 358 ri->ri_flg |= RI_BSWAP; 359 360 /* XXX: deduce these from chip registers */ 361 ri->ri_depth = 8; 362 ri->ri_width = 1024; 363 ri->ri_height = 768; 364 365 ri->ri_stride = 1024; 366 ri->ri_bits = (u_char *)sc->sc_fbh; 367 368 /* 369 * Initialize wsfont related stuff. 370 */ 371 wsfont_init(); 372 373 /* prefer gallant that is identical to the one the prom uses */ 374 wsfcookie = wsfont_find("Gallant", 12, 22, 0, 375 WSDISPLAY_FONTORDER_L2R, 376 WSDISPLAY_FONTORDER_L2R); 377 if (wsfcookie <= 0) { 378 #ifdef DIAGNOSTIC 379 printf("%s: unable to find font Gallant 12x22\n", 380 sc->sc_dev.dv_xname); 381 #endif 382 /* any font at all? */ 383 wsfcookie = wsfont_find(NULL, 0, 0, 0, 384 WSDISPLAY_FONTORDER_L2R, 385 WSDISPLAY_FONTORDER_L2R); 386 } 387 388 if (wsfcookie <= 0) { 389 printf("%s: unable to find any fonts\n", sc->sc_dev.dv_xname); 390 return; 391 } 392 393 if (wsfont_lock(wsfcookie, &ri->ri_font) != 0) { 394 printf("%s: unable to lock font\n", sc->sc_dev.dv_xname); 395 return; 396 } 397 ri->ri_wsfcookie = wsfcookie; 398 399 400 /* 401 * Initialize colormap related stuff. 402 */ 403 404 /* ANSI color map */ 405 p = rasops_cmap; 406 for (i = 0; i < IGS_CMAP_SIZE; ++i, p += 3) { /* software copy */ 407 sc->sc_cmap.r[i] = p[0]; 408 sc->sc_cmap.g[i] = p[1]; 409 sc->sc_cmap.b[i] = p[2]; 410 } 411 igsfb_update_cmap(sc, 0, IGS_CMAP_SIZE); 412 413 /* set overscan color r/g/b (XXX: use defattr's rgb?) */ 414 igs_ext_write(iot, ioh, IGS_EXT_OVERSCAN_RED, 0); 415 igs_ext_write(iot, ioh, IGS_EXT_OVERSCAN_GREEN, 0); 416 igs_ext_write(iot, ioh, IGS_EXT_OVERSCAN_BLUE, 0); 417 418 419 /* TODO: compute term size based on font dimensions? */ 420 rasops_init(ri, 34, 80); 421 422 igsfb_stdscreen.nrows = ri->ri_rows; 423 igsfb_stdscreen.ncols = ri->ri_cols; 424 igsfb_stdscreen.textops = &ri->ri_ops; 425 igsfb_stdscreen.capabilities = ri->ri_caps; 426 } 427 428 429 /* 430 * wsdisplay_accessops: mmap() 431 * XXX: allow mmapping i/o mapped i/o regs if INSECURE??? 432 */ 433 static paddr_t 434 igsfb_mmap(v, offset, prot) 435 void *v; 436 off_t offset; 437 int prot; 438 { 439 struct igsfb_softc *sc = v; 440 441 if (offset >= sc->sc_memsz || offset < 0) 442 return (-1); 443 444 return (bus_space_mmap(sc->sc_memt, sc->sc_memaddr, offset, prot, 445 sc->sc_memflags | BUS_SPACE_MAP_LINEAR)); 446 } 447 448 449 /* 450 * wsdisplay_accessops: ioctl() 451 */ 452 static int 453 igsfb_ioctl(v, cmd, data, flag, p) 454 void *v; 455 u_long cmd; 456 caddr_t data; 457 int flag; 458 struct proc *p; 459 { 460 struct igsfb_softc *sc = v; 461 struct rasops_info *ri = sc->sc_ri; 462 int turnoff; 463 464 switch (cmd) { 465 466 case WSDISPLAYIO_GTYPE: 467 *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; 468 return (0); 469 470 case WSDISPLAYIO_GINFO: 471 #define wsd_fbip ((struct wsdisplay_fbinfo *)data) 472 wsd_fbip->height = ri->ri_height; 473 wsd_fbip->width = ri->ri_width; 474 wsd_fbip->depth = ri->ri_depth; 475 wsd_fbip->cmsize = IGS_CMAP_SIZE; 476 #undef wsd_fbip 477 return (0); 478 479 case WSDISPLAYIO_GVIDEO: 480 *(u_int *)data = sc->sc_blanked ? 481 WSDISPLAYIO_VIDEO_OFF : WSDISPLAYIO_VIDEO_ON; 482 return (0); 483 484 case WSDISPLAYIO_SVIDEO: 485 turnoff = (*(u_int *)data == WSDISPLAYIO_VIDEO_OFF); 486 if (sc->sc_blanked != turnoff) { 487 sc->sc_blanked = turnoff; 488 igsfb_blank_screen(sc, sc->sc_blanked); 489 } 490 return (0); 491 492 case WSDISPLAYIO_GETCMAP: 493 return (igsfb_get_cmap(sc, (struct wsdisplay_cmap *)data)); 494 495 case WSDISPLAYIO_PUTCMAP: 496 return (igsfb_set_cmap(sc, (struct wsdisplay_cmap *)data)); 497 498 case WSDISPLAYIO_GCURMAX: 499 ((struct wsdisplay_curpos *)data)->x = IGS_CURSOR_MAX_SIZE; 500 ((struct wsdisplay_curpos *)data)->y = IGS_CURSOR_MAX_SIZE; 501 return (0); 502 503 case WSDISPLAYIO_GCURPOS: 504 *(struct wsdisplay_curpos *)data = sc->sc_cursor.cc_pos; 505 return (0); 506 507 case WSDISPLAYIO_SCURPOS: 508 igsfb_set_curpos(sc, (struct wsdisplay_curpos *)data); 509 return (0); 510 511 case WSDISPLAYIO_GCURSOR: 512 return (igsfb_get_cursor(sc, (struct wsdisplay_cursor *)data)); 513 514 case WSDISPLAYIO_SCURSOR: 515 return (igsfb_set_cursor(sc, (struct wsdisplay_cursor *)data)); 516 } 517 518 return (EPASSTHROUGH); 519 } 520 521 522 /* 523 * wsdisplay_accessops: ioctl(WSDISPLAYIO_SVIDEO) 524 */ 525 static void 526 igsfb_blank_screen(sc, blank) 527 struct igsfb_softc *sc; 528 int blank; 529 { 530 531 igs_ext_write(sc->sc_iot, sc->sc_ioh, 532 IGS_EXT_SYNC_CTL, 533 blank ? IGS_EXT_SYNC_H0 | IGS_EXT_SYNC_V0 534 : 0); 535 } 536 537 538 /* 539 * wsdisplay_accessops: ioctl(WSDISPLAYIO_GETCMAP) 540 * Served from software cmap copy. 541 */ 542 static int 543 igsfb_get_cmap(sc, p) 544 struct igsfb_softc *sc; 545 struct wsdisplay_cmap *p; 546 { 547 u_int index = p->index, count = p->count; 548 549 if (index >= IGS_CMAP_SIZE || count > IGS_CMAP_SIZE - index) 550 return (EINVAL); 551 552 if (!uvm_useracc(p->red, count, B_WRITE) || 553 !uvm_useracc(p->green, count, B_WRITE) || 554 !uvm_useracc(p->blue, count, B_WRITE)) 555 return (EFAULT); 556 557 copyout(&sc->sc_cmap.r[index], p->red, count); 558 copyout(&sc->sc_cmap.g[index], p->green, count); 559 copyout(&sc->sc_cmap.b[index], p->blue, count); 560 561 return (0); 562 } 563 564 565 /* 566 * wsdisplay_accessops: ioctl(WSDISPLAYIO_SETCMAP) 567 * Set software cmap copy and propagate changed range to device. 568 */ 569 static int 570 igsfb_set_cmap(sc, p) 571 struct igsfb_softc *sc; 572 struct wsdisplay_cmap *p; 573 { 574 u_int index = p->index, count = p->count; 575 576 if (index >= IGS_CMAP_SIZE || count > IGS_CMAP_SIZE - index) 577 return (EINVAL); 578 579 if (!uvm_useracc(p->red, count, B_READ) || 580 !uvm_useracc(p->green, count, B_READ) || 581 !uvm_useracc(p->blue, count, B_READ)) 582 return (EFAULT); 583 584 copyin(p->red, &sc->sc_cmap.r[index], count); 585 copyin(p->green, &sc->sc_cmap.g[index], count); 586 copyin(p->blue, &sc->sc_cmap.b[index], count); 587 588 igsfb_update_cmap(sc, p->index, p->count); 589 590 return (0); 591 } 592 593 594 /* 595 * Propagate specified part of the software cmap copy to device. 596 */ 597 static void 598 igsfb_update_cmap(sc, index, count) 599 struct igsfb_softc *sc; 600 u_int index, count; 601 { 602 bus_space_tag_t t; 603 bus_space_handle_t h; 604 u_int last, i; 605 606 if (index >= IGS_CMAP_SIZE) 607 return; 608 609 last = index + count; 610 if (last > IGS_CMAP_SIZE) 611 last = IGS_CMAP_SIZE; 612 613 t = sc->sc_iot; 614 h = sc->sc_ioh; 615 616 /* start palette writing, index is autoincremented by hardware */ 617 bus_space_write_1(t, h, IGS_DAC_PEL_WRITE_IDX, index); 618 619 for (i = index; i < last; ++i) { 620 bus_space_write_1(t, h, IGS_DAC_PEL_DATA, sc->sc_cmap.r[i]); 621 bus_space_write_1(t, h, IGS_DAC_PEL_DATA, sc->sc_cmap.g[i]); 622 bus_space_write_1(t, h, IGS_DAC_PEL_DATA, sc->sc_cmap.b[i]); 623 } 624 } 625 626 627 /* 628 * wsdisplay_accessops: ioctl(WSDISPLAYIO_SCURPOS) 629 */ 630 static void 631 igsfb_set_curpos(sc, curpos) 632 struct igsfb_softc *sc; 633 struct wsdisplay_curpos *curpos; 634 { 635 struct rasops_info *ri = sc->sc_ri; 636 int x = curpos->x, y = curpos->y; 637 638 if (y < 0) 639 y = 0; 640 else if (y > ri->ri_height) 641 y = ri->ri_height; 642 if (x < 0) 643 x = 0; 644 else if (x > ri->ri_width) 645 x = ri->ri_width; 646 sc->sc_cursor.cc_pos.x = x; 647 sc->sc_cursor.cc_pos.y = y; 648 649 igsfb_update_curpos(sc); 650 } 651 652 653 static void 654 igsfb_update_curpos(sc) 655 struct igsfb_softc *sc; 656 { 657 bus_space_tag_t t; 658 bus_space_handle_t h; 659 int x, xoff, y, yoff; 660 661 xoff = 0; 662 x = sc->sc_cursor.cc_pos.x - sc->sc_cursor.cc_hot.x; 663 if (x < 0) { 664 x = 0; 665 xoff = -x; 666 } 667 668 yoff = 0; 669 y = sc->sc_cursor.cc_pos.y - sc->sc_cursor.cc_hot.y; 670 if (y < 0) { 671 y = 0; 672 yoff = -y; 673 } 674 675 t = sc->sc_iot; 676 h = sc->sc_ioh; 677 678 igs_ext_write(t, h, IGS_EXT_SPRITE_HSTART_LO, x & 0xff); 679 igs_ext_write(t, h, IGS_EXT_SPRITE_HSTART_HI, (x >> 8) & 0x07); 680 igs_ext_write(t, h, IGS_EXT_SPRITE_HPRESET, xoff & 0x3f); 681 682 igs_ext_write(t, h, IGS_EXT_SPRITE_VSTART_LO, y & 0xff); 683 igs_ext_write(t, h, IGS_EXT_SPRITE_VSTART_HI, (y >> 8) & 0x07); 684 igs_ext_write(t, h, IGS_EXT_SPRITE_VPRESET, yoff & 0x3f); 685 } 686 687 688 /* 689 * wsdisplay_accessops: ioctl(WSDISPLAYIO_GCURSOR) 690 */ 691 static int 692 igsfb_get_cursor(sc, p) 693 struct igsfb_softc *sc; 694 struct wsdisplay_cursor *p; 695 { 696 697 /* XXX: TODO */ 698 return (0); 699 } 700 701 702 /* 703 * wsdisplay_accessops: ioctl(WSDISPLAYIO_SCURSOR) 704 */ 705 static int 706 igsfb_set_cursor(sc, p) 707 struct igsfb_softc *sc; 708 struct wsdisplay_cursor *p; 709 { 710 struct igs_hwcursor *cc; 711 u_int v, index, count, icount, iwidth; 712 713 cc = &sc->sc_cursor; 714 v = p->which; 715 716 if (v & WSDISPLAY_CURSOR_DOCMAP) { 717 index = p->cmap.index; 718 count = p->cmap.count; 719 if (index >= 2 || (index + count) > 2) 720 return (EINVAL); 721 if (!uvm_useracc(p->cmap.red, count, B_READ) 722 || !uvm_useracc(p->cmap.green, count, B_READ) 723 || !uvm_useracc(p->cmap.blue, count, B_READ)) 724 return (EFAULT); 725 } 726 727 if (v & WSDISPLAY_CURSOR_DOSHAPE) { 728 if (p->size.x > IGS_CURSOR_MAX_SIZE 729 || p->size.y > IGS_CURSOR_MAX_SIZE) 730 return (EINVAL); 731 732 iwidth = (p->size.x + 7) >> 3; /* bytes per scan line */ 733 icount = iwidth * p->size.y; 734 if (!uvm_useracc(p->image, icount, B_READ) 735 || !uvm_useracc(p->mask, icount, B_READ)) 736 return (EFAULT); 737 } 738 739 /* XXX: verify that hot is within size, pos within screen? */ 740 741 /* arguments verified, do the processing */ 742 743 if (v & WSDISPLAY_CURSOR_DOCUR) 744 sc->sc_curenb = p->enable; 745 746 if (v & WSDISPLAY_CURSOR_DOPOS) 747 cc->cc_pos = p->pos; 748 749 if (v & WSDISPLAY_CURSOR_DOHOT) 750 cc->cc_hot = p->hot; 751 752 if (v & WSDISPLAY_CURSOR_DOCMAP) { 753 copyin(p->cmap.red, &cc->cc_color[index], count); 754 copyin(p->cmap.green, &cc->cc_color[index + 2], count); 755 copyin(p->cmap.blue, &cc->cc_color[index + 4], count); 756 } 757 758 if (v & WSDISPLAY_CURSOR_DOSHAPE) { 759 u_int trailing_bits; 760 761 copyin(p->image, cc->cc_image, icount); 762 copyin(p->mask, cc->cc_mask, icount); 763 cc->cc_size = p->size; 764 765 /* clear trailing bits in the "partial" mask bytes */ 766 trailing_bits = p->size.x & 0x07; 767 if (trailing_bits != 0) { 768 const u_int cutmask = ~((~0) << trailing_bits); 769 u_char *mp; 770 u_int i; 771 772 mp = cc->cc_mask + iwidth - 1; 773 for (i = 0; i < p->size.y; ++i) { 774 *mp &= cutmask; 775 mp += iwidth; 776 } 777 } 778 igsfb_convert_cursor_data(sc, iwidth, p->size.y); 779 } 780 781 igsfb_update_cursor(sc, v); 782 return (0); 783 } 784 785 786 /* 787 * Convert incoming 1bpp cursor image/mask into native 2bpp format. 788 */ 789 static void 790 igsfb_convert_cursor_data(sc, w, h) 791 struct igsfb_softc *sc; 792 u_int w, h; 793 { 794 struct igs_hwcursor *cc = &sc->sc_cursor; 795 struct igs_bittab *btab = sc->sc_bittab; 796 u_int8_t *ip, *mp; 797 u_int16_t *dp; 798 u_int line, i; 799 800 /* init sprite to be all transparent */ 801 memset(cc->cc_sprite, 0xaa, IGS_CURSOR_DATA_SIZE); 802 803 /* first scanline */ 804 ip = cc->cc_image; 805 mp = cc->cc_mask; 806 dp = cc->cc_sprite; 807 808 for (line = 0; line < h; ++line) { 809 for (i = 0; i < w; ++i) { 810 u_int16_t is = btab->iexpand[ip[i]]; 811 u_int16_t ms = btab->mexpand[mp[i]]; 812 813 /* NB: tables are pre-bswapped if needed */ 814 dp[i] = (0xaaaa & ~ms) | (is & ms); 815 } 816 817 /* next scanline */ 818 ip += w; 819 mp += w; 820 dp += 8; /* 2bpp, 8 pixels per short = 8 shorts */ 821 } 822 } 823 824 825 /* 826 * Propagate cursor changes to device. 827 * "which" is composed from WSDISPLAY_CURSOR_DO* bits. 828 */ 829 static void 830 igsfb_update_cursor(sc, which) 831 struct igsfb_softc *sc; 832 u_int which; 833 { 834 bus_space_tag_t iot = sc->sc_iot; 835 bus_space_handle_t ioh = sc->sc_ioh; 836 u_int8_t curctl; 837 838 /* 839 * We will need to tweak sprite control register for cursor 840 * visibility and cursor color map manipualtion. 841 */ 842 if (which & (WSDISPLAY_CURSOR_DOCUR | WSDISPLAY_CURSOR_DOCMAP)) { 843 curctl = igs_ext_read(iot, ioh, IGS_EXT_SPRITE_CTL); 844 } 845 846 if (which & WSDISPLAY_CURSOR_DOSHAPE) { 847 u_int8_t *dst = bus_space_vaddr(sc->sc_memt, sc->sc_crh); 848 849 /* 850 * memcpy between spaces of different endianness would 851 * be ... special. We cannot be sure if memset gonna 852 * push data in 4-byte chunks, we can't pre-bswap it, 853 * so do it byte-by-byte to preserve byte ordering. 854 */ 855 if (sc->sc_hwflags & IGSFB_HW_BSWAP) { 856 u_int8_t *src = (u_int8_t *)sc->sc_cursor.cc_sprite; 857 int i; 858 859 for (i = 0; i < 1024; ++i) 860 *dst++ = *src++; 861 } else { 862 memcpy(dst, sc->sc_cursor.cc_sprite, 1024); 863 } 864 } 865 866 if (which & (WSDISPLAY_CURSOR_DOPOS | WSDISPLAY_CURSOR_DOHOT)) { 867 /* code shared with WSDISPLAYIO_SCURPOS */ 868 igsfb_update_curpos(sc); 869 } 870 871 if (which & WSDISPLAY_CURSOR_DOCMAP) { 872 u_int8_t *p; 873 874 /* tell DAC we want access to the cursor palette */ 875 igs_ext_write(iot, ioh, IGS_EXT_SPRITE_CTL, 876 curctl | IGS_EXT_SPRITE_DAC_PEL); 877 878 p = sc->sc_cursor.cc_color; 879 880 bus_space_write_1(iot, ioh, IGS_DAC_PEL_WRITE_IDX, 0); 881 bus_space_write_1(iot, ioh, IGS_DAC_PEL_DATA, p[0]); 882 bus_space_write_1(iot, ioh, IGS_DAC_PEL_DATA, p[2]); 883 bus_space_write_1(iot, ioh, IGS_DAC_PEL_DATA, p[4]); 884 885 bus_space_write_1(iot, ioh, IGS_DAC_PEL_WRITE_IDX, 1); 886 bus_space_write_1(iot, ioh, IGS_DAC_PEL_DATA, p[1]); 887 bus_space_write_1(iot, ioh, IGS_DAC_PEL_DATA, p[3]); 888 bus_space_write_1(iot, ioh, IGS_DAC_PEL_DATA, p[5]); 889 890 /* restore access to normal palette */ 891 igs_ext_write(iot, ioh, IGS_EXT_SPRITE_CTL, curctl); 892 } 893 894 if (which & WSDISPLAY_CURSOR_DOCUR) { 895 if ((curctl & IGS_EXT_SPRITE_VISIBLE) == 0 896 && sc->sc_curenb) 897 igs_ext_write(iot, ioh, IGS_EXT_SPRITE_CTL, 898 curctl | IGS_EXT_SPRITE_VISIBLE); 899 else if ((curctl & IGS_EXT_SPRITE_VISIBLE) != 0 900 && !sc->sc_curenb) 901 igs_ext_write(iot, ioh, IGS_EXT_SPRITE_CTL, 902 curctl & ~IGS_EXT_SPRITE_VISIBLE); 903 } 904 } 905 906 907 /* 908 * wsdisplay_accessops: alloc_screen() 909 */ 910 static int 911 igsfb_alloc_screen(v, type, cookiep, curxp, curyp, attrp) 912 void *v; 913 const struct wsscreen_descr *type; 914 void **cookiep; 915 int *curxp, *curyp; 916 long *attrp; 917 { 918 919 /* TODO */ 920 return (ENOMEM); 921 } 922 923 924 /* 925 * wsdisplay_accessops: free_screen() 926 */ 927 static void 928 igsfb_free_screen(v, cookie) 929 void *v; 930 void *cookie; 931 { 932 933 /* TODO */ 934 return; 935 } 936 937 938 /* 939 * wsdisplay_accessops: show_screen() 940 */ 941 static int 942 igsfb_show_screen(v, cookie, waitok, cb, cbarg) 943 void *v; 944 void *cookie; 945 int waitok; 946 void (*cb)(void *, int, int); 947 void *cbarg; 948 { 949 950 return (0); 951 } 952
Indexes created Thu Sep 25 16:09:42 GMT 2025