fxr.watson.org: OPENBSD sys/dev/ic/ibm561.c

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1 /* $NetBSD: ibm561.c,v 1.1 2001/12/12 07:46:48 elric Exp $ */ 2 /* $OpenBSD: ibm561.c,v 1.5 2008/06/26 05:42:15 ray Exp $ */ 3 4 /*- 5 * Copyright (c) 2001 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Roland C. Dowdeswell of Ponte, Inc. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/device.h> 36 #include <sys/buf.h> 37 #include <sys/kernel.h> 38 #include <sys/malloc.h> 39 40 #include <uvm/uvm_extern.h> 41 42 #include <dev/pci/pcivar.h> 43 #include <dev/ic/ibm561reg.h> 44 #include <dev/ic/ibm561var.h> 45 #include <dev/ic/ramdac.h> 46 47 #include <dev/wscons/wsconsio.h> 48 49 /* 50 * Functions exported via the RAMDAC configuration table. 51 */ 52 void ibm561_init(struct ramdac_cookie *); 53 int ibm561_set_cmap(struct ramdac_cookie *, 54 struct wsdisplay_cmap *); 55 int ibm561_get_cmap(struct ramdac_cookie *, 56 struct wsdisplay_cmap *); 57 int ibm561_set_cursor(struct ramdac_cookie *, 58 struct wsdisplay_cursor *); 59 int ibm561_get_cursor(struct ramdac_cookie *, 60 struct wsdisplay_cursor *); 61 int ibm561_set_curpos(struct ramdac_cookie *, 62 struct wsdisplay_curpos *); 63 int ibm561_get_curpos(struct ramdac_cookie *, 64 struct wsdisplay_curpos *); 65 int ibm561_get_curmax(struct ramdac_cookie *, 66 struct wsdisplay_curpos *); 67 int ibm561_set_dotclock(struct ramdac_cookie *, 68 unsigned); 69 70 /* XXX const */ 71 struct ramdac_funcs ibm561_funcsstruct = { 72 "IBM561", 73 ibm561_register, 74 ibm561_init, 75 ibm561_set_cmap, 76 ibm561_get_cmap, 77 ibm561_set_cursor, 78 ibm561_get_cursor, 79 ibm561_set_curpos, 80 ibm561_get_curpos, 81 ibm561_get_curmax, 82 NULL, /* check_curcmap; not needed */ 83 NULL, /* set_curcmap; not needed */ 84 NULL, /* get_curcmap; not needed */ 85 ibm561_set_dotclock, 86 }; 87 88 /* 89 * Private data. 90 */ 91 struct ibm561data { 92 void *cookie; 93 94 int (*ramdac_sched_update)(void *, void (*)(void *)); 95 void (*ramdac_wr)(void *, u_int, u_int8_t); 96 u_int8_t (*ramdac_rd)(void *, u_int); 97 98 #define CHANGED_CURCMAP 0x0001 /* cursor cmap */ 99 #define CHANGED_CMAP 0x0002 /* color map */ 100 #define CHANGED_WTYPE 0x0004 /* window types */ 101 #define CHANGED_DOTCLOCK 0x0008 /* dot clock */ 102 #define CHANGED_ALL 0x000f /* or of all above */ 103 u_int8_t changed; 104 105 /* dotclock parameters */ 106 u_int8_t vco_div; 107 u_int8_t pll_ref; 108 u_int8_t div_dotclock; 109 110 /* colormaps et al. */ 111 u_int8_t curcmap_r[2]; 112 u_int8_t curcmap_g[2]; 113 u_int8_t curcmap_b[2]; 114 115 u_int8_t cmap_r[IBM561_NCMAP_ENTRIES]; 116 u_int8_t cmap_g[IBM561_NCMAP_ENTRIES]; 117 u_int8_t cmap_b[IBM561_NCMAP_ENTRIES]; 118 119 u_int16_t gamma_r[IBM561_NGAMMA_ENTRIES]; 120 u_int16_t gamma_g[IBM561_NGAMMA_ENTRIES]; 121 u_int16_t gamma_b[IBM561_NGAMMA_ENTRIES]; 122 123 u_int16_t wtype[IBM561_NWTYPES]; 124 }; 125 126 /* 127 * private functions 128 */ 129 void ibm561_update(void *); 130 static void ibm561_load_cmap(struct ibm561data *); 131 static void ibm561_load_dotclock(struct ibm561data *); 132 static void ibm561_regbegin(struct ibm561data *, u_int16_t); 133 static void ibm561_regcont(struct ibm561data *, u_int16_t, u_int8_t); 134 static void ibm561_regcont10bit(struct ibm561data *, u_int16_t, u_int16_t); 135 static void ibm561_regwr(struct ibm561data *, u_int16_t, u_int8_t); 136 137 struct ramdac_funcs * 138 ibm561_funcs(void) 139 { 140 return &ibm561_funcsstruct; 141 } 142 143 struct ibm561data ibm561_console_data; 144 145 struct ramdac_cookie * 146 ibm561_register(v, sched_update, wr, rd) 147 void *v; 148 int (*sched_update)(void *, void (*)(void *)); 149 void (*wr)(void *, u_int, u_int8_t); 150 u_int8_t (*rd)(void *, u_int); 151 { 152 struct ibm561data *data; 153 154 if (ibm561_console_data.cookie == NULL) { 155 data = malloc(sizeof *data, M_DEVBUF, M_WAITOK); 156 bzero(data, sizeof *data); 157 } else 158 data = &ibm561_console_data; 159 data->cookie = v; 160 data->ramdac_sched_update = sched_update; 161 data->ramdac_wr = wr; 162 data->ramdac_rd = rd; 163 return (struct ramdac_cookie *)data; 164 } 165 166 /* 167 * This function exists solely to provide a means to init 168 * the RAMDAC without first registering. It is useful for 169 * initializing the console early on. 170 */ 171 172 void 173 ibm561_cninit(v, sched_update, wr, rd, dotclock) 174 void *v; 175 int (*sched_update)(void *, void (*)(void *)); 176 void (*wr)(void *, u_int, u_int8_t); 177 u_int8_t (*rd)(void *, u_int); 178 u_int dotclock; 179 { 180 struct ibm561data *data = &ibm561_console_data; 181 data->cookie = v; 182 data->ramdac_sched_update = sched_update; 183 data->ramdac_wr = wr; 184 data->ramdac_rd = rd; 185 ibm561_set_dotclock((struct ramdac_cookie *)data, dotclock); 186 ibm561_init((struct ramdac_cookie *)data); 187 } 188 189 void 190 ibm561_init(rc) 191 struct ramdac_cookie *rc; 192 { 193 struct ibm561data *data = (struct ibm561data *)rc; 194 int i; 195 196 /* XXX this is _essential_ */ 197 198 ibm561_load_dotclock(data); 199 200 /* XXXrcd: bunch of magic of which I have no current clue */ 201 ibm561_regwr(data, IBM561_CONFIG_REG1, 0x2a); 202 ibm561_regwr(data, IBM561_CONFIG_REG3, 0x41); 203 ibm561_regwr(data, IBM561_CONFIG_REG4, 0x20); 204 205 /* initialize the card a bit */ 206 ibm561_regwr(data, IBM561_SYNC_CNTL, 0x1); 207 ibm561_regwr(data, IBM561_CONFIG_REG2, 0x19); 208 209 ibm561_regwr(data, IBM561_CONFIG_REG1, 0x2a); 210 ibm561_regwr(data, IBM561_CONFIG_REG4, 0x20); 211 212 ibm561_regbegin(data, IBM561_WAT_SEG_REG); 213 ibm561_regcont(data, IBM561_CMD, 0x00); 214 ibm561_regcont(data, IBM561_CMD, 0x00); 215 ibm561_regcont(data, IBM561_CMD, 0x00); 216 ibm561_regcont(data, IBM561_CMD, 0x00); 217 ibm561_regbegin(data, IBM561_CHROMAKEY0); 218 ibm561_regcont(data, IBM561_CMD, 0x00); 219 ibm561_regcont(data, IBM561_CMD, 0x00); 220 ibm561_regcont(data, IBM561_CMD, 0x00); 221 ibm561_regcont(data, IBM561_CMD, 0x00); 222 223 ibm561_regwr(data, IBM561_CURS_CNTL_REG, 0x00); /* XXX off? */ 224 225 /* cursor `hot spot' registers */ 226 ibm561_regbegin(data, IBM561_HOTSPOT_REG); 227 ibm561_regcont(data, IBM561_CMD, 0x00); 228 ibm561_regcont(data, IBM561_CMD, 0x00); 229 ibm561_regcont(data, IBM561_CMD, 0xff); 230 ibm561_regcont(data, IBM561_CMD, 0x00); 231 ibm561_regcont(data, IBM561_CMD, 0xff); 232 ibm561_regcont(data, IBM561_CMD, 0x00); 233 234 /* VRAM Mask Registers (diagnostics) */ 235 ibm561_regbegin(data, IBM561_VRAM_MASK_REG); 236 ibm561_regcont(data, IBM561_CMD, 0xff); 237 ibm561_regcont(data, IBM561_CMD, 0xff); 238 ibm561_regcont(data, IBM561_CMD, 0xff); 239 ibm561_regcont(data, IBM561_CMD, 0xff); 240 ibm561_regcont(data, IBM561_CMD, 0xff); 241 ibm561_regcont(data, IBM561_CMD, 0xff); 242 ibm561_regcont(data, IBM561_CMD, 0xff); 243 244 /* let's set up some decent default colour maps and gammas */ 245 for (i=0; i < IBM561_NCMAP_ENTRIES; i++) 246 data->cmap_r[i] = data->cmap_g[i] = data->cmap_b[i] = 0xff; 247 data->cmap_r[0] = data->cmap_g[0] = data->cmap_b[0] = 0x00; 248 data->cmap_r[256] = data->cmap_g[256] = data->cmap_b[256] = 0x00; 249 data->cmap_r[512] = data->cmap_g[512] = data->cmap_b[512] = 0x00; 250 data->cmap_r[768] = data->cmap_g[768] = data->cmap_b[768] = 0x00; 251 252 data->gamma_r[0] = data->gamma_g[0] = data->gamma_b[0] = 0x00; 253 for (i=0; i < IBM561_NGAMMA_ENTRIES; i++) 254 data->gamma_r[i] = data->gamma_g[i] = data->gamma_b[i] = 0xff; 255 256 for (i=0; i < IBM561_NWTYPES; i++) 257 data->wtype[i] = 0x0036; 258 data->wtype[1] = 0x0028; 259 260 /* the last step: */ 261 data->changed = CHANGED_ALL; 262 data->ramdac_sched_update(data->cookie, ibm561_update); 263 } 264 265 int 266 ibm561_set_cmap(rc, cmapp) 267 struct ramdac_cookie *rc; 268 struct wsdisplay_cmap *cmapp; 269 { 270 struct ibm561data *data = (struct ibm561data *)rc; 271 u_int count, index; 272 int error; 273 int s; 274 275 index = cmapp->index; 276 count = cmapp->count; 277 278 if (index >= IBM561_NCMAP_ENTRIES || 279 count > IBM561_NCMAP_ENTRIES - index) 280 return (EINVAL); 281 282 s = spltty(); 283 if ((error = copyin(cmapp->red, &data->cmap_r[index], count)) != 0) { 284 splx(s); 285 return (error); 286 } 287 if ((error = copyin(cmapp->green, &data->cmap_g[index], count)) != 0) { 288 splx(s); 289 return (error); 290 } 291 if ((error = copyin(cmapp->blue, &data->cmap_b[index], count)) != 0) { 292 splx(s); 293 return (error); 294 } 295 data->changed |= CHANGED_CMAP; 296 data->ramdac_sched_update(data->cookie, ibm561_update); 297 splx(s); 298 return (0); 299 } 300 301 int 302 ibm561_get_cmap(rc, cmapp) 303 struct ramdac_cookie *rc; 304 struct wsdisplay_cmap *cmapp; 305 { 306 struct ibm561data *data = (struct ibm561data *)rc; 307 u_int count, index; 308 int error; 309 310 if (cmapp->index >= IBM561_NCMAP_ENTRIES || 311 cmapp->count > IBM561_NCMAP_ENTRIES - cmapp->index) 312 return (EINVAL); 313 count = cmapp->count; 314 index = cmapp->index; 315 error = copyout(&data->cmap_r[index], cmapp->red, count); 316 if (error) 317 return (error); 318 error = copyout(&data->cmap_g[index], cmapp->green, count); 319 if (error) 320 return (error); 321 error = copyout(&data->cmap_b[index], cmapp->blue, count); 322 return (error); 323 } 324 325 /* 326 * XXX: 327 * I am leaving these functions returning EINVAL, as they are 328 * not strictly necessary for the correct functioning of the 329 * card and in fact are not used on the other TGA variants, except 330 * they are exported via ioctl(2) to userland, which does not in 331 * fact use them. 332 */ 333 334 int 335 ibm561_set_cursor(rc, cursorp) 336 struct ramdac_cookie *rc; 337 struct wsdisplay_cursor *cursorp; 338 { 339 return EINVAL; 340 } 341 342 int 343 ibm561_get_cursor(rc, cursorp) 344 struct ramdac_cookie *rc; 345 struct wsdisplay_cursor *cursorp; 346 { 347 return EINVAL; 348 } 349 350 int 351 ibm561_set_curpos(rc, curposp) 352 struct ramdac_cookie *rc; 353 struct wsdisplay_curpos *curposp; 354 { 355 return EINVAL; 356 } 357 358 int 359 ibm561_get_curpos(rc, curposp) 360 struct ramdac_cookie *rc; 361 struct wsdisplay_curpos *curposp; 362 { 363 return EINVAL; 364 } 365 366 int 367 ibm561_get_curmax(rc, curposp) 368 struct ramdac_cookie *rc; 369 struct wsdisplay_curpos *curposp; 370 { 371 return EINVAL; 372 } 373 374 int 375 ibm561_set_dotclock(rc, dotclock) 376 struct ramdac_cookie *rc; 377 unsigned dotclock; 378 { 379 struct ibm561data *data = (struct ibm561data *)rc; 380 381 /* XXXrcd: a couple of these are a little hazy, vis a vis 382 * check 175MHz and 202MHz, which are wrong... 383 */ 384 switch (dotclock) { 385 case 25175000: data->vco_div = 0x3e; data->pll_ref = 0x09; break; 386 case 31500000: data->vco_div = 0x17; data->pll_ref = 0x05; break; 387 case 40000000: data->vco_div = 0x42; data->pll_ref = 0x06; break; 388 case 50000000: data->vco_div = 0x45; data->pll_ref = 0x05; break; 389 case 65000000: data->vco_div = 0xac; data->pll_ref = 0x0c; break; 390 case 69000000: data->vco_div = 0xa9; data->pll_ref = 0x0b; break; 391 case 74000000: data->vco_div = 0x9c; data->pll_ref = 0x09; break; 392 case 75000000: data->vco_div = 0x93; data->pll_ref = 0x08; break; 393 case 103994000: data->vco_div = 0x96; data->pll_ref = 0x06; break; 394 case 108180000: data->vco_div = 0xb8; data->pll_ref = 0x08; break; 395 case 110000000: data->vco_div = 0xba; data->pll_ref = 0x08; break; 396 case 119840000: data->vco_div = 0x82; data->pll_ref = 0x04; break; 397 case 130808000: data->vco_div = 0xc8; data->pll_ref = 0x08; break; 398 case 135000000: data->vco_div = 0xc1; data->pll_ref = 0x07; break; 399 case 175000000: data->vco_div = 0xe2; data->pll_ref = 0x07; break; 400 case 202500000: data->vco_div = 0xe2; data->pll_ref = 0x07; break; 401 default: 402 return EINVAL; 403 } 404 405 data->div_dotclock = 0xb0; 406 data->changed |= CHANGED_DOTCLOCK; 407 return 0; 408 } 409 410 /* 411 * Internal Functions 412 */ 413 414 void 415 ibm561_update(vp) 416 void *vp; 417 { 418 struct ibm561data *data = (struct ibm561data *)vp; 419 int i; 420 421 /* XXX see comment above ibm561_cninit() */ 422 if (!data) 423 data = &ibm561_console_data; 424 425 if (data->changed & CHANGED_WTYPE) { 426 ibm561_regbegin(data, IBM561_FB_WINTYPE); 427 for (i=0; i < IBM561_NWTYPES; i++) 428 ibm561_regcont10bit(data, IBM561_CMD_FB_WAT, data->wtype[i]); 429 430 /* XXXrcd: quick hack here for AUX FB table */ 431 ibm561_regbegin(data, IBM561_AUXFB_WINTYPE); 432 for (i=0; i < IBM561_NWTYPES; i++) 433 ibm561_regcont(data, IBM561_CMD, 0x04); 434 435 /* XXXrcd: quick hack here for OL WAT table */ 436 ibm561_regbegin(data, IBM561_OL_WINTYPE); 437 for (i=0; i < IBM561_NWTYPES; i++) 438 ibm561_regcont10bit(data, IBM561_CMD_FB_WAT, 0x0231); 439 440 /* XXXrcd: quick hack here for AUX OL WAT table */ 441 ibm561_regbegin(data, IBM561_AUXOL_WINTYPE); 442 for (i=0; i < IBM561_NWTYPES; i++) 443 ibm561_regcont(data, IBM561_CMD, 0x0c); 444 } 445 446 if (data->changed & CHANGED_CMAP) 447 ibm561_load_cmap(data); 448 449 /* XXX: I am not sure in what situations it is safe to 450 * change the dotclock---hope this is good. 451 */ 452 if (data->changed & CHANGED_DOTCLOCK) 453 ibm561_load_dotclock(data); 454 } 455 456 static void 457 ibm561_load_cmap(struct ibm561data *data) 458 { 459 int i; 460 461 ibm561_regbegin(data, IBM561_CMAP_TABLE); 462 for (i=0; i < IBM561_NCMAP_ENTRIES; i++) { 463 ibm561_regcont(data, IBM561_CMD_CMAP, data->cmap_r[i]); 464 ibm561_regcont(data, IBM561_CMD_CMAP, data->cmap_g[i]); 465 ibm561_regcont(data, IBM561_CMD_CMAP, data->cmap_b[i]); 466 } 467 468 ibm561_regbegin(data, IBM561_RED_GAMMA_TABLE); 469 for (i=0; i < 256; i++) 470 ibm561_regcont10bit(data, IBM561_CMD_GAMMA, data->gamma_r[i]); 471 472 ibm561_regbegin(data, IBM561_GREEN_GAMMA_TABLE); 473 for (i=1; i < 256; i++) 474 ibm561_regcont10bit(data, IBM561_CMD_GAMMA, data->gamma_g[i]); 475 476 ibm561_regbegin(data, IBM561_BLUE_GAMMA_TABLE); 477 for (i=1; i < 256; i++) 478 ibm561_regcont10bit(data, IBM561_CMD_GAMMA, data->gamma_b[i]); 479 480 } 481 482 static void 483 ibm561_load_dotclock(struct ibm561data *data) 484 { 485 /* XXX 486 * we should probably be more pro-active here, but it shouldn't 487 * actually happen... 488 */ 489 if (!data->vco_div || !data->pll_ref || ! data->div_dotclock) { 490 panic("ibm561_load_dotclock: called uninitialized"); 491 } 492 493 ibm561_regwr(data, IBM561_PLL_VCO_DIV, data->vco_div); 494 ibm561_regwr(data, IBM561_PLL_REF_REG, data->pll_ref); 495 ibm561_regwr(data, IBM561_DIV_DOTCLCK, data->div_dotclock); 496 } 497 498 static void 499 ibm561_regcont10bit(struct ibm561data *data, u_int16_t reg, u_int16_t val) 500 { 501 data->ramdac_wr(data->cookie, IBM561_CMD_GAMMA, (val >> 2) & 0xff); 502 data->ramdac_wr(data->cookie, IBM561_CMD_GAMMA, (val & 0x3) << 6); 503 } 504 505 static void 506 ibm561_regbegin(struct ibm561data *data, u_int16_t reg) 507 { 508 data->ramdac_wr(data->cookie, IBM561_ADDR_LOW, reg & 0xff); 509 data->ramdac_wr(data->cookie, IBM561_ADDR_HIGH, (reg >> 8) & 0xff); 510 } 511 512 static void 513 ibm561_regcont(struct ibm561data *data, u_int16_t reg, u_int8_t val) 514 { 515 data->ramdac_wr(data->cookie, reg, val); 516 } 517 518 static void 519 ibm561_regwr(struct ibm561data *data, u_int16_t reg, u_int8_t val) 520 { 521 ibm561_regbegin(data, reg); 522 ibm561_regcont(data, IBM561_CMD, val); 523 }

FreeBSD/Linux Kernel Cross Reference sys/dev/ic/ibm561.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/ibm561.c