1 /* $OpenBSD: bt463.c,v 1.13 2014/07/08 17:19:25 deraadt Exp $ */ 2 /* $NetBSD: bt463.c,v 1.2 2000/06/13 17:21:06 nathanw Exp $ */ 3 4 /*- 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 36 * All rights reserved. 37 * 38 * Author: Chris G. Demetriou 39 * 40 * Permission to use, copy, modify and distribute this software and 41 * its documentation is hereby granted, provided that both the copyright 42 * notice and this permission notice appear in all copies of the 43 * software, derivative works or modified versions, and any portions 44 * thereof, and that both notices appear in supporting documentation. 45 * 46 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 47 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 48 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 49 * 50 * Carnegie Mellon requests users of this software to return to 51 * 52 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 53 * School of Computer Science 54 * Carnegie Mellon University 55 * Pittsburgh PA 15213-3890 56 * 57 * any improvements or extensions that they make and grant Carnegie the 58 * rights to redistribute these changes. 59 */ 60 61 /* This code was derived from and originally located in sys/dev/pci/ 62 * NetBSD: tga_bt463.c,v 1.5 2000/03/04 10:27:59 elric Exp 63 */ 64 65 #include <sys/param.h> 66 #include <sys/systm.h> 67 #include <sys/device.h> 68 #include <sys/buf.h> 69 #include <sys/kernel.h> 70 #include <sys/malloc.h> 71 72 #include <dev/pci/pcivar.h> 73 #include <dev/pci/tgareg.h> 74 #include <dev/pci/tgavar.h> 75 #include <dev/ic/bt463reg.h> 76 #include <dev/ic/bt463var.h> 77 78 #include <dev/wscons/wsconsio.h> 79 80 /* 81 * Functions exported via the RAMDAC configuration table. 82 */ 83 void bt463_init(struct ramdac_cookie *); 84 int bt463_set_cmap(struct ramdac_cookie *, 85 struct wsdisplay_cmap *); 86 int bt463_get_cmap(struct ramdac_cookie *, 87 struct wsdisplay_cmap *); 88 int bt463_set_cursor(struct ramdac_cookie *, 89 struct wsdisplay_cursor *); 90 int bt463_get_cursor(struct ramdac_cookie *, 91 struct wsdisplay_cursor *); 92 int bt463_set_curpos(struct ramdac_cookie *, 93 struct wsdisplay_curpos *); 94 int bt463_get_curpos(struct ramdac_cookie *, 95 struct wsdisplay_curpos *); 96 int bt463_get_curmax(struct ramdac_cookie *, 97 struct wsdisplay_curpos *); 98 int bt463_check_curcmap(struct ramdac_cookie *, 99 struct wsdisplay_cursor *cursorp); 100 void bt463_set_curcmap(struct ramdac_cookie *, 101 struct wsdisplay_cursor *cursorp); 102 int bt463_get_curcmap(struct ramdac_cookie *, 103 struct wsdisplay_cursor *cursorp); 104 105 #ifdef BT463_DEBUG 106 int bt463_store(void *); 107 int bt463_debug(void *); 108 int bt463_readback(void *); 109 void bt463_copyback(void *); 110 #endif 111 112 struct ramdac_funcs bt463_funcsstruct = { 113 "Bt463", 114 bt463_register, 115 bt463_init, 116 bt463_set_cmap, 117 bt463_get_cmap, 118 bt463_set_cursor, 119 bt463_get_cursor, 120 bt463_set_curpos, 121 bt463_get_curpos, 122 bt463_get_curmax, 123 bt463_check_curcmap, 124 bt463_set_curcmap, 125 bt463_get_curcmap, 126 NULL, 127 }; 128 129 /* 130 * Private data. 131 */ 132 struct bt463data { 133 void *cookie; /* This is what is passed 134 * around, and is probably 135 * struct tga_devconfig * 136 */ 137 138 int (*ramdac_sched_update)(void *, void (*)(void *)); 139 void (*ramdac_wr)(void *, u_int, u_int8_t); 140 u_int8_t (*ramdac_rd)(void *, u_int); 141 142 int changed; /* what changed; see below */ 143 char curcmap_r[2]; /* cursor colormap */ 144 char curcmap_g[2]; 145 char curcmap_b[2]; 146 char cmap_r[BT463_NCMAP_ENTRIES]; /* colormap */ 147 char cmap_g[BT463_NCMAP_ENTRIES]; 148 char cmap_b[BT463_NCMAP_ENTRIES]; 149 int window_type[16]; /* 16 24-bit window type table entries */ 150 }; 151 152 /* When we're doing console initialization, there's no 153 * way to get our cookie back to the video card's softc 154 * before we call sched_update. So we stash it here, 155 * and bt463_update will look for it here first. 156 */ 157 static struct bt463data *console_data; 158 159 160 #define BTWREG(data, addr, val) do { bt463_wraddr((data), (addr)); \ 161 (data)->ramdac_wr((data)->cookie, BT463_REG_IREG_DATA, (val)); } while (0) 162 #define BTWNREG(data, val) (data)->ramdac_wr((data)->cookie, \ 163 BT463_REG_IREG_DATA, (val)) 164 #define BTRREG(data, addr) (bt463_wraddr((data), (addr)), \ 165 (data)->ramdac_rd((data)->cookie, BT463_REG_IREG_DATA)) 166 #define BTRNREG(data) ((data)->ramdac_rd((data)->cookie, BT463_REG_IREG_DATA)) 167 168 #define DATA_CURCMAP_CHANGED 0x01 /* cursor colormap changed */ 169 #define DATA_CMAP_CHANGED 0x02 /* colormap changed */ 170 #define DATA_WTYPE_CHANGED 0x04 /* window type table changed */ 171 #define DATA_ALL_CHANGED 0x07 172 173 /* 174 * Internal functions. 175 */ 176 inline void bt463_wraddr(struct bt463data *, u_int16_t); 177 178 void bt463_update(void *); 179 180 181 /*****************************************************************************/ 182 183 /* 184 * Functions exported via the RAMDAC configuration table. 185 */ 186 187 struct ramdac_funcs * 188 bt463_funcs(void) 189 { 190 return &bt463_funcsstruct; 191 } 192 193 struct ramdac_cookie * 194 bt463_register(v, sched_update, wr, rd) 195 void *v; 196 int (*sched_update)(void *, void (*)(void *)); 197 void (*wr)(void *, u_int, u_int8_t); 198 u_int8_t (*rd)(void *, u_int); 199 { 200 struct bt463data *data; 201 /* 202 * XXX -- comment out of date. rcd. 203 * If we should allocate a new private info struct, do so. 204 * Otherwise, use the one we have (if it's there), or 205 * use the temporary one on the stack. 206 */ 207 data = malloc(sizeof *data, M_DEVBUF, M_WAITOK); 208 /* XXX -- if !data */ 209 data->cookie = v; 210 data->ramdac_sched_update = sched_update; 211 data->ramdac_wr = wr; 212 data->ramdac_rd = rd; 213 return (struct ramdac_cookie *)data; 214 } 215 216 /* 217 * This function exists solely to provide a means to init 218 * the RAMDAC without first registering. It is useful for 219 * initializing the console early on. 220 */ 221 void 222 bt463_cninit(v, sched_update, wr, rd) 223 void *v; 224 int (*sched_update)(void *, void (*)(void *)); 225 void (*wr)(void *, u_int, u_int8_t); 226 u_int8_t (*rd)(void *, u_int); 227 { 228 struct bt463data tmp, *data = &tmp; 229 data->cookie = v; 230 data->ramdac_sched_update = sched_update; 231 data->ramdac_wr = wr; 232 data->ramdac_rd = rd; 233 /* Set up console_data so that when bt463_update is called back, 234 * it can use the right information. 235 */ 236 console_data = data; 237 bt463_init((struct ramdac_cookie *)data); 238 console_data = NULL; 239 } 240 241 void 242 bt463_init(rc) 243 struct ramdac_cookie *rc; 244 { 245 struct bt463data *data = (struct bt463data *)rc; 246 247 int i; 248 249 /* 250 * Init the BT463 for normal operation. 251 */ 252 253 254 /* 255 * Setup: 256 * reg 0: 4:1 multiplexing, 25/75 blink. 257 * reg 1: Overlay mapping: mapped to common palette, 258 * 14 window type entries, 24-plane configuration mode, 259 * 4 overlay planes, underlays disabled, no cursor. 260 * reg 2: sync-on-green enabled, pedestal enabled. 261 */ 262 263 BTWREG(data, BT463_IREG_COMMAND_0, 0x40); 264 BTWREG(data, BT463_IREG_COMMAND_1, 0x48); 265 BTWREG(data, BT463_IREG_COMMAND_2, 0xC0); 266 267 /* 268 * Initialize the read mask. 269 */ 270 bt463_wraddr(data, BT463_IREG_READ_MASK_P0_P7); 271 for (i = 0; i < 4; i++) 272 BTWNREG(data, 0xff); 273 274 /* 275 * Initialize the blink mask. 276 */ 277 bt463_wraddr(data, BT463_IREG_BLINK_MASK_P0_P7); 278 for (i = 0; i < 4; i++) 279 BTWNREG(data, 0); 280 281 282 /* 283 * Clear test register 284 */ 285 BTWREG(data, BT463_IREG_TEST, 0); 286 287 /* 288 * Initialize the RAMDAC info struct to hold all of our 289 * data, and fill it in. 290 */ 291 data->changed = DATA_ALL_CHANGED; 292 293 /* initial cursor colormap: 0 is black, 1 is white */ 294 data->curcmap_r[0] = data->curcmap_g[0] = data->curcmap_b[0] = 0; 295 data->curcmap_r[1] = data->curcmap_g[1] = data->curcmap_b[1] = 0xff; 296 297 /* Initial colormap: 0 is black, everything else is white */ 298 data->cmap_r[0] = data->cmap_g[0] = data->cmap_b[0] = 0; 299 for (i = 1; i < 256; i++) { 300 data->cmap_r[i] = rasops_cmap[3*i + 0]; 301 data->cmap_g[i] = rasops_cmap[3*i + 1]; 302 data->cmap_b[i] = rasops_cmap[3*i + 2]; 303 } 304 305 /* Initialize the window type table: 306 * 307 * Entry 0: 24-plane truecolor, overlays enabled, bypassed. 308 * 309 * Lookup table bypass: yes ( 1 << 23 & 0x800000) 800000 310 * Colormap address: 0x000 (0x000 << 17 & 0x7e0000) 0 311 * Overlay mask: 0xf ( 0xf << 13 & 0x01e000) 1e000 312 * Overlay location: P<27:24> ( 0 << 12 & 0x001000) 0 313 * Display mode: Truecolor ( 0 << 9 & 0x000e00) 000 314 * Number of planes: 8 ( 8 << 5 & 0x0001e0) 100 315 * Plane shift: 0 ( 0 << 0 & 0x00001f) 0 316 * -------- 317 * 0x81e100 318 */ 319 data->window_type[0] = 0x81e100; 320 321 /* Entry 1: 8-plane pseudocolor in the bottom 8 bits, 322 * overlays enabled, colormap starting at 0. 323 * 324 * Lookup table bypass: no ( 0 << 23 & 0x800000) 0 325 * Colormap address: 0x000 (0x000 << 17 & 0x7e0000) 0 326 * Overlay mask: 0xf ( 0xf << 13 & 0x01e000) 0x1e000 327 * Overlay location: P<27:24> ( 0 << 12 & 0x001000) 0 328 * Display mode: Pseudocolor ( 1 << 9 & 0x000e00) 0x200 329 * Number of planes: 8 ( 8 << 5 & 0x0001e0) 0x100 330 * Plane shift: 16 ( 0x10 << 0 & 0x00001f) 10 331 * -------- 332 * 0x01e310 333 */ 334 data->window_type[1] = 0x01e310; 335 336 /* The colormap interface to the world only supports one colormap, 337 * so having an entry for the 'alternate' colormap in the bt463 338 * probably isn't useful. 339 */ 340 341 /* Fill the remaining table entries with clones of entry 0 until we 342 * figure out a better use for them. 343 */ 344 345 for (i = 2; i < BT463_NWTYPE_ENTRIES; i++) { 346 data->window_type[i] = 0x81e100; 347 } 348 349 data->ramdac_sched_update(data->cookie, bt463_update); 350 351 } 352 353 int 354 bt463_set_cmap(rc, cmapp) 355 struct ramdac_cookie *rc; 356 struct wsdisplay_cmap *cmapp; 357 { 358 struct bt463data *data = (struct bt463data *)rc; 359 u_int count, index; 360 int s, error; 361 362 index = cmapp->index; 363 count = cmapp->count; 364 365 if (index >= BT463_NCMAP_ENTRIES || count > BT463_NCMAP_ENTRIES - index) 366 return (EINVAL); 367 368 s = spltty(); 369 370 if ((error = copyin(cmapp->red, &data->cmap_r[index], count)) != 0) { 371 splx(s); 372 return (error); 373 } 374 if ((error = copyin(cmapp->green, &data->cmap_g[index], count)) != 0) { 375 splx(s); 376 return (error); 377 } 378 if ((error = copyin(cmapp->blue, &data->cmap_b[index], count)) != 0) { 379 splx(s); 380 return (error); 381 } 382 383 data->changed |= DATA_CMAP_CHANGED; 384 385 data->ramdac_sched_update(data->cookie, bt463_update); 386 splx(s); 387 388 return (0); 389 } 390 391 int 392 bt463_get_cmap(rc, cmapp) 393 struct ramdac_cookie *rc; 394 struct wsdisplay_cmap *cmapp; 395 { 396 struct bt463data *data = (struct bt463data *)rc; 397 u_int count, index; 398 int error; 399 400 count = cmapp->count; 401 index = cmapp->index; 402 403 if (index >= BT463_NCMAP_ENTRIES || count > BT463_NCMAP_ENTRIES - index) 404 return (EINVAL); 405 406 error = copyout(&data->cmap_r[index], cmapp->red, count); 407 if (error) 408 return (error); 409 error = copyout(&data->cmap_g[index], cmapp->green, count); 410 if (error) 411 return (error); 412 error = copyout(&data->cmap_b[index], cmapp->blue, count); 413 return (error); 414 } 415 416 int 417 bt463_check_curcmap(rc, cursorp) 418 struct ramdac_cookie *rc; 419 struct wsdisplay_cursor *cursorp; 420 { 421 u_int index, count; 422 u_int8_t spare[2]; 423 int error; 424 425 index = cursorp->cmap.index; 426 count = cursorp->cmap.count; 427 428 if (index >= 2 || count > 2 - index) 429 return (EINVAL); 430 431 if ((error = copyin(&cursorp->cmap.red, &spare, count)) != 0) 432 return (error); 433 if ((error = copyin(&cursorp->cmap.green, &spare, count)) != 0) 434 return (error); 435 if ((error = copyin(&cursorp->cmap.blue, &spare, count)) != 0) 436 return (error); 437 438 return (0); 439 } 440 441 void 442 bt463_set_curcmap(rc, cursorp) 443 struct ramdac_cookie *rc; 444 struct wsdisplay_cursor *cursorp; 445 { 446 struct bt463data *data = (struct bt463data *)rc; 447 int count, index; 448 449 /* can't fail; parameters have already been checked. */ 450 count = cursorp->cmap.count; 451 index = cursorp->cmap.index; 452 copyin(cursorp->cmap.red, &data->curcmap_r[index], count); 453 copyin(cursorp->cmap.green, &data->curcmap_g[index], count); 454 copyin(cursorp->cmap.blue, &data->curcmap_b[index], count); 455 data->changed |= DATA_CURCMAP_CHANGED; 456 data->ramdac_sched_update(data->cookie, bt463_update); 457 } 458 459 int 460 bt463_get_curcmap(rc, cursorp) 461 struct ramdac_cookie *rc; 462 struct wsdisplay_cursor *cursorp; 463 { 464 struct bt463data *data = (struct bt463data *)rc; 465 int error; 466 467 cursorp->cmap.index = 0; /* DOCMAP */ 468 cursorp->cmap.count = 2; 469 if (cursorp->cmap.red != NULL) { 470 error = copyout(data->curcmap_r, cursorp->cmap.red, 2); 471 if (error) 472 return (error); 473 } 474 if (cursorp->cmap.green != NULL) { 475 error = copyout(data->curcmap_g, cursorp->cmap.green, 2); 476 if (error) 477 return (error); 478 } 479 if (cursorp->cmap.blue != NULL) { 480 error = copyout(data->curcmap_b, cursorp->cmap.blue, 2); 481 if (error) 482 return (error); 483 } 484 return (0); 485 } 486 487 488 /*****************************************************************************/ 489 490 /* 491 * Internal functions. 492 */ 493 494 #ifdef BT463_DEBUG 495 int bt463_store(void *v) 496 { 497 struct bt463data *data = (struct bt463data *)v; 498 499 data->changed = DATA_ALL_CHANGED; 500 data->ramdac_sched_update(data->cookie, bt463_update); 501 printf("Scheduled bt463 store\n"); 502 503 return 0; 504 } 505 506 507 int bt463_readback(void *v) 508 { 509 struct bt463data *data = (struct bt463data *)v; 510 511 data->ramdac_sched_update(data->cookie, bt463_copyback); 512 printf("Scheduled bt463 copyback\n"); 513 return 0; 514 } 515 516 int 517 bt463_debug(v) 518 void *v; 519 { 520 struct bt463data *data = (struct bt463data *)v; 521 int i; 522 u_int8_t val; 523 524 printf("BT463 main regs:\n"); 525 for (i = 0x200; i < 0x20F; i ++) { 526 val = BTRREG(data, i); 527 printf(" $%04x %02x\n", i, val); 528 } 529 530 printf("BT463 revision register:\n"); 531 val = BTRREG(data, 0x220); 532 printf(" $%04x %02x\n", 0x220, val); 533 534 printf("BT463 window type table (from softc):\n"); 535 536 for (i = 0; i < BT463_NWTYPE_ENTRIES; i++) { 537 printf("%02x %06x\n", i, data->window_type[i]); 538 } 539 540 return 0; 541 } 542 543 void 544 bt463_copyback(p) 545 void *p; 546 { 547 struct bt463data *data = (struct bt463data *)p; 548 int i; 549 550 for (i = 0; i < BT463_NWTYPE_ENTRIES; i++) { 551 bt463_wraddr(data, BT463_IREG_WINDOW_TYPE_TABLE + i); 552 data->window_type[i] = (BTRNREG(data) & 0xff); /* B0-7 */ 553 data->window_type[i] |= (BTRNREG(data) & 0xff) << 8; /* B8-15 */ 554 data->window_type[i] |= (BTRNREG(data) & 0xff) << 16; /* B16-23 */ 555 } 556 } 557 #endif 558 559 inline void 560 bt463_wraddr(data, ireg) 561 struct bt463data *data; 562 u_int16_t ireg; 563 { 564 data->ramdac_wr(data->cookie, BT463_REG_ADDR_LOW, ireg & 0xff); 565 data->ramdac_wr(data->cookie, BT463_REG_ADDR_HIGH, (ireg >> 8) & 0xff); 566 } 567 568 void 569 bt463_update(p) 570 void *p; 571 { 572 struct bt463data *data = (struct bt463data *)p; 573 int i, v; 574 575 if (console_data != NULL) { 576 /* The cookie passed in from sched_update is incorrect. Use the 577 * right one. 578 */ 579 data = console_data; 580 } 581 582 v = data->changed; 583 584 /* The Bt463 won't accept window type data except during a blanking 585 * interval, so we do this early in the interrupt. 586 * Blanking the screen might also be a good idea, but it can cause 587 * unpleasant flashing and is hard to do from this side of the 588 * ramdac interface. 589 */ 590 if (v & DATA_WTYPE_CHANGED) { 591 /* spit out the window type data */ 592 for (i = 0; i < BT463_NWTYPE_ENTRIES; i++) { 593 bt463_wraddr(data, BT463_IREG_WINDOW_TYPE_TABLE + i); 594 BTWNREG(data, (data->window_type[i]) & 0xff); /* B0-7 */ 595 BTWNREG(data, (data->window_type[i] >> 8) & 0xff); /* B8-15 */ 596 BTWNREG(data, (data->window_type[i] >> 16) & 0xff); /* B16-23 */ 597 } 598 } 599 600 if (v & DATA_CURCMAP_CHANGED) { 601 bt463_wraddr(data, BT463_IREG_CURSOR_COLOR_0); 602 /* spit out the cursor data */ 603 for (i = 0; i < 2; i++) { 604 BTWNREG(data, data->curcmap_r[i]); 605 BTWNREG(data, data->curcmap_g[i]); 606 BTWNREG(data, data->curcmap_b[i]); 607 } 608 } 609 610 if (v & DATA_CMAP_CHANGED) { 611 bt463_wraddr(data, BT463_IREG_CPALETTE_RAM); 612 /* spit out the colormap data */ 613 for (i = 0; i < BT463_NCMAP_ENTRIES; i++) { 614 data->ramdac_wr(data->cookie, BT463_REG_CMAP_DATA, 615 data->cmap_r[i]); 616 data->ramdac_wr(data->cookie, BT463_REG_CMAP_DATA, 617 data->cmap_g[i]); 618 data->ramdac_wr(data->cookie, BT463_REG_CMAP_DATA, 619 data->cmap_b[i]); 620 } 621 } 622 623 data->changed = 0; 624 } 625 626 int bt463_set_cursor (rc, cur) 627 struct ramdac_cookie *rc; 628 struct wsdisplay_cursor *cur; 629 { 630 struct bt463data *data = (struct bt463data *)rc; 631 return tga_builtin_set_cursor(data->cookie, cur); 632 } 633 634 int bt463_get_cursor (rc, cur) 635 struct ramdac_cookie *rc; 636 struct wsdisplay_cursor *cur; 637 { 638 struct bt463data *data = (struct bt463data *)rc; 639 return tga_builtin_get_cursor(data->cookie, cur); 640 } 641 642 int bt463_set_curpos (rc, cur) 643 struct ramdac_cookie *rc; 644 struct wsdisplay_curpos *cur; 645 { 646 struct bt463data *data = (struct bt463data *)rc; 647 return tga_builtin_set_curpos(data->cookie, cur); 648 } 649 650 int bt463_get_curpos (rc, cur) 651 struct ramdac_cookie *rc; 652 struct wsdisplay_curpos *cur; 653 { 654 struct bt463data *data = (struct bt463data *)rc; 655 return tga_builtin_get_curpos(data->cookie, cur); 656 } 657 658 int bt463_get_curmax (rc, cur) 659 struct ramdac_cookie *rc; 660 struct wsdisplay_curpos *cur; 661 { 662 struct bt463data *data = (struct bt463data *)rc; 663 return tga_builtin_get_curmax(data->cookie, cur); 664 } 665