Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/ic/ibm561.c
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1 /* $NetBSD: ibm561.c,v 1.8 2008/04/28 20:23:50 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Roland C. Dowdeswell of Ponte, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: ibm561.c,v 1.8 2008/04/28 20:23:50 martin Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 #include <sys/buf.h> 39 #include <sys/kernel.h> 40 #include <sys/malloc.h> 41 42 #include <uvm/uvm_extern.h> 43 44 #include <dev/pci/pcivar.h> 45 #include <dev/ic/ibm561reg.h> 46 #include <dev/ic/ibm561var.h> 47 #include <dev/ic/ramdac.h> 48 49 #include <dev/wscons/wsconsio.h> 50 51 /* 52 * Functions exported via the RAMDAC configuration table. 53 */ 54 void ibm561_init(struct ramdac_cookie *); 55 int ibm561_set_cmap(struct ramdac_cookie *, struct wsdisplay_cmap *); 56 int ibm561_get_cmap(struct ramdac_cookie *, struct wsdisplay_cmap *); 57 int ibm561_set_cursor(struct ramdac_cookie *, struct wsdisplay_cursor *); 58 int ibm561_get_cursor(struct ramdac_cookie *, struct wsdisplay_cursor *); 59 int ibm561_set_curpos(struct ramdac_cookie *, struct wsdisplay_curpos *); 60 int ibm561_get_curpos(struct ramdac_cookie *, struct wsdisplay_curpos *); 61 int ibm561_get_curmax(struct ramdac_cookie *, struct wsdisplay_curpos *); 62 int ibm561_set_dotclock(struct ramdac_cookie *, unsigned); 63 64 /* XXX const */ 65 struct ramdac_funcs ibm561_funcsstruct = { 66 "IBM561", 67 ibm561_register, 68 ibm561_init, 69 ibm561_set_cmap, 70 ibm561_get_cmap, 71 ibm561_set_cursor, 72 ibm561_get_cursor, 73 ibm561_set_curpos, 74 ibm561_get_curpos, 75 ibm561_get_curmax, 76 NULL, /* check_curcmap; not needed */ 77 NULL, /* set_curcmap; not needed */ 78 NULL, /* get_curcmap; not needed */ 79 ibm561_set_dotclock, 80 }; 81 82 /* 83 * Private data. 84 */ 85 struct ibm561data { 86 void *cookie; 87 88 int (*ramdac_sched_update)(void *, void (*)(void *)); 89 void (*ramdac_wr)(void *, u_int, u_int8_t); 90 u_int8_t (*ramdac_rd)(void *, u_int); 91 92 #define CHANGED_CURCMAP 0x0001 /* cursor cmap */ 93 #define CHANGED_CMAP 0x0002 /* color map */ 94 #define CHANGED_WTYPE 0x0004 /* window types */ 95 #define CHANGED_DOTCLOCK 0x0008 /* dot clock */ 96 #define CHANGED_ALL 0x000f /* or of all above */ 97 u_int8_t changed; 98 99 /* dotclock parameters */ 100 u_int8_t vco_div; 101 u_int8_t pll_ref; 102 u_int8_t div_dotclock; 103 104 /* colormaps et al. */ 105 u_int8_t curcmap_r[2]; 106 u_int8_t curcmap_g[2]; 107 u_int8_t curcmap_b[2]; 108 109 u_int8_t cmap_r[IBM561_NCMAP_ENTRIES]; 110 u_int8_t cmap_g[IBM561_NCMAP_ENTRIES]; 111 u_int8_t cmap_b[IBM561_NCMAP_ENTRIES]; 112 113 u_int16_t gamma_r[IBM561_NGAMMA_ENTRIES]; 114 u_int16_t gamma_g[IBM561_NGAMMA_ENTRIES]; 115 u_int16_t gamma_b[IBM561_NGAMMA_ENTRIES]; 116 117 u_int16_t wtype[IBM561_NWTYPES]; 118 }; 119 120 /* 121 * private functions 122 */ 123 void ibm561_update(void *); 124 static void ibm561_load_cmap(struct ibm561data *); 125 static void ibm561_load_dotclock(struct ibm561data *); 126 static void ibm561_regbegin(struct ibm561data *, u_int16_t); 127 static void ibm561_regcont(struct ibm561data *, u_int16_t, u_int8_t); 128 static void ibm561_regcont10bit(struct ibm561data *, u_int16_t, u_int16_t); 129 static void ibm561_regwr(struct ibm561data *, u_int16_t, u_int8_t); 130 131 struct ramdac_funcs * 132 ibm561_funcs(void) 133 { 134 return &ibm561_funcsstruct; 135 } 136 137 struct ramdac_cookie * 138 ibm561_register(v, sched_update, wr, rd) 139 void *v; 140 int (*sched_update)(void *, void (*)(void *)); 141 void (*wr)(void *, u_int, u_int8_t); 142 u_int8_t (*rd)(void *, u_int); 143 { 144 struct ibm561data *data; 145 146 data = malloc(sizeof *data, M_DEVBUF, M_WAITOK|M_ZERO); 147 data->cookie = v; 148 data->ramdac_sched_update = sched_update; 149 data->ramdac_wr = wr; 150 data->ramdac_rd = rd; 151 return (struct ramdac_cookie *)data; 152 } 153 154 /* 155 * This function exists solely to provide a means to init 156 * the RAMDAC without first registering. It is useful for 157 * initializing the console early on. 158 */ 159 160 struct ibm561data *saved_console_data; 161 162 void 163 ibm561_cninit(v, sched_update, wr, rd, dotclock) 164 void *v; 165 int (*sched_update)(void *, void (*)(void *)); 166 void (*wr)(void *, u_int, u_int8_t); 167 u_int8_t (*rd)(void *, u_int); 168 u_int dotclock; 169 { 170 struct ibm561data tmp, *data = &tmp; 171 memset(data, 0x0, sizeof *data); 172 data->cookie = v; 173 data->ramdac_sched_update = sched_update; 174 data->ramdac_wr = wr; 175 data->ramdac_rd = rd; 176 ibm561_set_dotclock((struct ramdac_cookie *)data, dotclock); 177 saved_console_data = data; 178 ibm561_init((struct ramdac_cookie *)data); 179 saved_console_data = NULL; 180 } 181 182 void 183 ibm561_init(rc) 184 struct ramdac_cookie *rc; 185 { 186 struct ibm561data *data = (struct ibm561data *)rc; 187 int i; 188 189 /* XXX this is _essential_ */ 190 191 ibm561_load_dotclock(data); 192 193 /* XXXrcd: bunch of magic of which I have no current clue */ 194 ibm561_regwr(data, IBM561_CONFIG_REG1, 0x2a); 195 ibm561_regwr(data, IBM561_CONFIG_REG3, 0x41); 196 ibm561_regwr(data, IBM561_CONFIG_REG4, 0x20); 197 198 /* initialize the card a bit */ 199 ibm561_regwr(data, IBM561_SYNC_CNTL, 0x1); 200 ibm561_regwr(data, IBM561_CONFIG_REG2, 0x19); 201 202 ibm561_regwr(data, IBM561_CONFIG_REG1, 0x2a); 203 ibm561_regwr(data, IBM561_CONFIG_REG4, 0x20); 204 205 ibm561_regbegin(data, IBM561_WAT_SEG_REG); 206 ibm561_regcont(data, IBM561_CMD, 0x00); 207 ibm561_regcont(data, IBM561_CMD, 0x00); 208 ibm561_regcont(data, IBM561_CMD, 0x00); 209 ibm561_regcont(data, IBM561_CMD, 0x00); 210 ibm561_regbegin(data, IBM561_CHROMAKEY0); 211 ibm561_regcont(data, IBM561_CMD, 0x00); 212 ibm561_regcont(data, IBM561_CMD, 0x00); 213 ibm561_regcont(data, IBM561_CMD, 0x00); 214 ibm561_regcont(data, IBM561_CMD, 0x00); 215 216 ibm561_regwr(data, IBM561_CURS_CNTL_REG, 0x00); /* XXX off? */ 217 218 /* cursor `hot spot' registers */ 219 ibm561_regbegin(data, IBM561_HOTSPOT_REG); 220 ibm561_regcont(data, IBM561_CMD, 0x00); 221 ibm561_regcont(data, IBM561_CMD, 0x00); 222 ibm561_regcont(data, IBM561_CMD, 0xff); 223 ibm561_regcont(data, IBM561_CMD, 0x00); 224 ibm561_regcont(data, IBM561_CMD, 0xff); 225 ibm561_regcont(data, IBM561_CMD, 0x00); 226 227 /* VRAM Mask Registers (diagnostics) */ 228 ibm561_regbegin(data, IBM561_VRAM_MASK_REG); 229 ibm561_regcont(data, IBM561_CMD, 0xff); 230 ibm561_regcont(data, IBM561_CMD, 0xff); 231 ibm561_regcont(data, IBM561_CMD, 0xff); 232 ibm561_regcont(data, IBM561_CMD, 0xff); 233 ibm561_regcont(data, IBM561_CMD, 0xff); 234 ibm561_regcont(data, IBM561_CMD, 0xff); 235 ibm561_regcont(data, IBM561_CMD, 0xff); 236 237 /* let's set up some decent default colour maps and gammas */ 238 for (i=0; i < IBM561_NCMAP_ENTRIES; i++) 239 data->cmap_r[i] = data->cmap_g[i] = data->cmap_b[i] = 0xff; 240 data->cmap_r[0] = data->cmap_g[0] = data->cmap_b[0] = 0x00; 241 data->cmap_r[256] = data->cmap_g[256] = data->cmap_b[256] = 0x00; 242 data->cmap_r[512] = data->cmap_g[512] = data->cmap_b[512] = 0x00; 243 data->cmap_r[768] = data->cmap_g[768] = data->cmap_b[768] = 0x00; 244 245 data->gamma_r[0] = data->gamma_g[0] = data->gamma_b[0] = 0x00; 246 for (i=0; i < IBM561_NGAMMA_ENTRIES; i++) 247 data->gamma_r[i] = data->gamma_g[i] = data->gamma_b[i] = 0xff; 248 249 for (i=0; i < IBM561_NWTYPES; i++) 250 data->wtype[i] = 0x0036; 251 data->wtype[1] = 0x0028; 252 253 /* the last step: */ 254 data->changed = CHANGED_ALL; 255 data->ramdac_sched_update(data->cookie, ibm561_update); 256 } 257 258 int 259 ibm561_set_cmap(rc, cmapp) 260 struct ramdac_cookie *rc; 261 struct wsdisplay_cmap *cmapp; 262 { 263 struct ibm561data *data = (struct ibm561data *)rc; 264 u_int count, index; 265 uint8_t r[IBM561_NCMAP_ENTRIES]; 266 uint8_t g[IBM561_NCMAP_ENTRIES]; 267 uint8_t b[IBM561_NCMAP_ENTRIES]; 268 int s, error; 269 270 if (cmapp->index >= IBM561_NCMAP_ENTRIES || 271 cmapp->count > IBM561_NCMAP_ENTRIES - cmapp->index) 272 return (EINVAL); 273 274 index = cmapp->index; 275 count = cmapp->count; 276 error = copyin(cmapp->red, &r[index], count); 277 if (error) 278 return error; 279 error = copyin(cmapp->green, &g[index], count); 280 if (error) 281 return error; 282 error = copyin(cmapp->blue, &b[index], count); 283 if (error) 284 return error; 285 s = spltty(); 286 memcpy(&data->cmap_r[index], &r[index], count); 287 memcpy(&data->cmap_g[index], &g[index], count); 288 memcpy(&data->cmap_b[index], &b[index], count); 289 data->changed |= CHANGED_CMAP; 290 data->ramdac_sched_update(data->cookie, ibm561_update); 291 splx(s); 292 return (0); 293 } 294 295 int 296 ibm561_get_cmap(rc, cmapp) 297 struct ramdac_cookie *rc; 298 struct wsdisplay_cmap *cmapp; 299 { 300 struct ibm561data *data = (struct ibm561data *)rc; 301 u_int count, index; 302 int error; 303 304 if (cmapp->index >= IBM561_NCMAP_ENTRIES || 305 cmapp->count > IBM561_NCMAP_ENTRIES - cmapp->index) 306 return (EINVAL); 307 count = cmapp->count; 308 index = cmapp->index; 309 error = copyout(&data->cmap_r[index], cmapp->red, count); 310 if (error) 311 return (error); 312 error = copyout(&data->cmap_g[index], cmapp->green, count); 313 if (error) 314 return (error); 315 error = copyout(&data->cmap_b[index], cmapp->blue, count); 316 return (error); 317 } 318 319 /* 320 * XXX: 321 * I am leaving these functions returning EINVAL, as they are 322 * not strictly necessary for the correct functioning of the 323 * card and in fact are not used on the other TGA variants, except 324 * they are exported via ioctl(2) to userland, which does not in 325 * fact use them. 326 */ 327 328 int 329 ibm561_set_cursor(rc, cursorp) 330 struct ramdac_cookie *rc; 331 struct wsdisplay_cursor *cursorp; 332 { 333 return EINVAL; 334 } 335 336 int 337 ibm561_get_cursor(rc, cursorp) 338 struct ramdac_cookie *rc; 339 struct wsdisplay_cursor *cursorp; 340 { 341 return EINVAL; 342 } 343 344 int 345 ibm561_set_curpos(rc, curposp) 346 struct ramdac_cookie *rc; 347 struct wsdisplay_curpos *curposp; 348 { 349 return EINVAL; 350 } 351 352 int 353 ibm561_get_curpos(rc, curposp) 354 struct ramdac_cookie *rc; 355 struct wsdisplay_curpos *curposp; 356 { 357 return EINVAL; 358 } 359 360 int 361 ibm561_get_curmax(rc, curposp) 362 struct ramdac_cookie *rc; 363 struct wsdisplay_curpos *curposp; 364 { 365 return EINVAL; 366 } 367 368 int 369 ibm561_set_dotclock(rc, dotclock) 370 struct ramdac_cookie *rc; 371 unsigned dotclock; 372 { 373 struct ibm561data *data = (struct ibm561data *)rc; 374 375 /* XXXrcd: a couple of these are a little hazy, vis a vis 376 * check 175MHz and 202MHz, which are wrong... 377 */ 378 switch (dotclock) { 379 case 25175000: data->vco_div = 0x3e; data->pll_ref = 0x09; break; 380 case 31500000: data->vco_div = 0x17; data->pll_ref = 0x05; break; 381 case 40000000: data->vco_div = 0x42; data->pll_ref = 0x06; break; 382 case 50000000: data->vco_div = 0x45; data->pll_ref = 0x05; break; 383 case 65000000: data->vco_div = 0xac; data->pll_ref = 0x0c; break; 384 case 69000000: data->vco_div = 0xa9; data->pll_ref = 0x0b; break; 385 case 74000000: data->vco_div = 0x9c; data->pll_ref = 0x09; break; 386 case 75000000: data->vco_div = 0x93; data->pll_ref = 0x08; break; 387 case 103994000: data->vco_div = 0x96; data->pll_ref = 0x06; break; 388 case 108180000: data->vco_div = 0xb8; data->pll_ref = 0x08; break; 389 case 110000000: data->vco_div = 0xba; data->pll_ref = 0x08; break; 390 case 119840000: data->vco_div = 0x82; data->pll_ref = 0x04; break; 391 case 130808000: data->vco_div = 0xc8; data->pll_ref = 0x08; break; 392 case 135000000: data->vco_div = 0xc1; data->pll_ref = 0x07; break; 393 case 175000000: data->vco_div = 0xe2; data->pll_ref = 0x07; break; 394 case 202500000: data->vco_div = 0xe2; data->pll_ref = 0x07; break; 395 default: 396 return EINVAL; 397 } 398 399 data->div_dotclock = 0xb0; 400 data->changed |= CHANGED_DOTCLOCK; 401 return 0; 402 } 403 404 /* 405 * Internal Functions 406 */ 407 408 void 409 ibm561_update(vp) 410 void *vp; 411 { 412 struct ibm561data *data = (struct ibm561data *)vp; 413 int i; 414 415 /* XXX see comment above ibm561_cninit() */ 416 if (!data) 417 data = saved_console_data; 418 419 if (data->changed & CHANGED_WTYPE) { 420 ibm561_regbegin(data, IBM561_FB_WINTYPE); 421 for (i=0; i < IBM561_NWTYPES; i++) 422 ibm561_regcont10bit(data, IBM561_CMD_FB_WAT, data->wtype[i]); 423 424 /* XXXrcd: quick hack here for AUX FB table */ 425 ibm561_regbegin(data, IBM561_AUXFB_WINTYPE); 426 for (i=0; i < IBM561_NWTYPES; i++) 427 ibm561_regcont(data, IBM561_CMD, 0x04); 428 429 /* XXXrcd: quick hack here for OL WAT table */ 430 ibm561_regbegin(data, IBM561_OL_WINTYPE); 431 for (i=0; i < IBM561_NWTYPES; i++) 432 ibm561_regcont10bit(data, IBM561_CMD_FB_WAT, 0x0231); 433 434 /* XXXrcd: quick hack here for AUX OL WAT table */ 435 ibm561_regbegin(data, IBM561_AUXOL_WINTYPE); 436 for (i=0; i < IBM561_NWTYPES; i++) 437 ibm561_regcont(data, IBM561_CMD, 0x0c); 438 } 439 440 if (data->changed & CHANGED_CMAP) 441 ibm561_load_cmap(data); 442 443 /* XXX: I am not sure in what situations it is safe to 444 * change the dotclock---hope this is good. 445 */ 446 if (data->changed & CHANGED_DOTCLOCK) 447 ibm561_load_dotclock(data); 448 } 449 450 static void 451 ibm561_load_cmap(struct ibm561data *data) 452 { 453 int i; 454 455 ibm561_regbegin(data, IBM561_CMAP_TABLE); 456 for (i=0; i < IBM561_NCMAP_ENTRIES; i++) { 457 ibm561_regcont(data, IBM561_CMD_CMAP, data->cmap_r[i]); 458 ibm561_regcont(data, IBM561_CMD_CMAP, data->cmap_g[i]); 459 ibm561_regcont(data, IBM561_CMD_CMAP, data->cmap_b[i]); 460 } 461 462 ibm561_regbegin(data, IBM561_RED_GAMMA_TABLE); 463 for (i=0; i < 256; i++) 464 ibm561_regcont10bit(data, IBM561_CMD_GAMMA, data->gamma_r[i]); 465 466 ibm561_regbegin(data, IBM561_GREEN_GAMMA_TABLE); 467 for (i=1; i < 256; i++) 468 ibm561_regcont10bit(data, IBM561_CMD_GAMMA, data->gamma_g[i]); 469 470 ibm561_regbegin(data, IBM561_BLUE_GAMMA_TABLE); 471 for (i=1; i < 256; i++) 472 ibm561_regcont10bit(data, IBM561_CMD_GAMMA, data->gamma_b[i]); 473 474 } 475 476 static void 477 ibm561_load_dotclock(struct ibm561data *data) 478 { 479 /* XXX 480 * we should probably be more pro-active here, but it shouldn't 481 * actually happen... 482 */ 483 if (!data->vco_div || !data->pll_ref || ! data->div_dotclock) { 484 panic("ibm561_load_dotclock: called uninitialized"); 485 } 486 487 ibm561_regwr(data, IBM561_PLL_VCO_DIV, data->vco_div); 488 ibm561_regwr(data, IBM561_PLL_REF_REG, data->pll_ref); 489 ibm561_regwr(data, IBM561_DIV_DOTCLCK, data->div_dotclock); 490 } 491 492 static void 493 ibm561_regcont10bit(struct ibm561data *data, u_int16_t reg, u_int16_t val) 494 { 495 data->ramdac_wr(data->cookie, IBM561_CMD_GAMMA, (val >> 2) & 0xff); 496 data->ramdac_wr(data->cookie, IBM561_CMD_GAMMA, (val & 0x3) << 6); 497 } 498 499 static void 500 ibm561_regbegin(struct ibm561data *data, u_int16_t reg) 501 { 502 data->ramdac_wr(data->cookie, IBM561_ADDR_LOW, reg & 0xff); 503 data->ramdac_wr(data->cookie, IBM561_ADDR_HIGH, (reg >> 8) & 0xff); 504 } 505 506 static void 507 ibm561_regcont(struct ibm561data *data, u_int16_t reg, u_int8_t val) 508 { 509 data->ramdac_wr(data->cookie, reg, val); 510 } 511 512 static void 513 ibm561_regwr(struct ibm561data *data, u_int16_t reg, u_int8_t val) 514 { 515 ibm561_regbegin(data, reg); 516 ibm561_regcont(data, IBM561_CMD, val); 517 }
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