ibm561.c revision 1.8.14.1
1 /* $NetBSD: ibm561.c,v 1.8.14.1 2009/05/13 17:19:23 jym 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 1.8.14.1 2009/05/13 17:19:23 jym 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(struct ramdac_cookie *rc) 184 { 185 struct ibm561data *data = (struct ibm561data *)rc; 186 int i; 187 188 /* XXX this is _essential_ */ 189 190 ibm561_load_dotclock(data); 191 192 /* XXXrcd: bunch of magic of which I have no current clue */ 193 ibm561_regwr(data, IBM561_CONFIG_REG1, 0x2a); 194 ibm561_regwr(data, IBM561_CONFIG_REG3, 0x41); 195 ibm561_regwr(data, IBM561_CONFIG_REG4, 0x20); 196 197 /* initialize the card a bit */ 198 ibm561_regwr(data, IBM561_SYNC_CNTL, 0x1); 199 ibm561_regwr(data, IBM561_CONFIG_REG2, 0x19); 200 201 ibm561_regwr(data, IBM561_CONFIG_REG1, 0x2a); 202 ibm561_regwr(data, IBM561_CONFIG_REG4, 0x20); 203 204 ibm561_regbegin(data, IBM561_WAT_SEG_REG); 205 ibm561_regcont(data, IBM561_CMD, 0x00); 206 ibm561_regcont(data, IBM561_CMD, 0x00); 207 ibm561_regcont(data, IBM561_CMD, 0x00); 208 ibm561_regcont(data, IBM561_CMD, 0x00); 209 ibm561_regbegin(data, IBM561_CHROMAKEY0); 210 ibm561_regcont(data, IBM561_CMD, 0x00); 211 ibm561_regcont(data, IBM561_CMD, 0x00); 212 ibm561_regcont(data, IBM561_CMD, 0x00); 213 ibm561_regcont(data, IBM561_CMD, 0x00); 214 215 ibm561_regwr(data, IBM561_CURS_CNTL_REG, 0x00); /* XXX off? */ 216 217 /* cursor `hot spot' registers */ 218 ibm561_regbegin(data, IBM561_HOTSPOT_REG); 219 ibm561_regcont(data, IBM561_CMD, 0x00); 220 ibm561_regcont(data, IBM561_CMD, 0x00); 221 ibm561_regcont(data, IBM561_CMD, 0xff); 222 ibm561_regcont(data, IBM561_CMD, 0x00); 223 ibm561_regcont(data, IBM561_CMD, 0xff); 224 ibm561_regcont(data, IBM561_CMD, 0x00); 225 226 /* VRAM Mask Registers (diagnostics) */ 227 ibm561_regbegin(data, IBM561_VRAM_MASK_REG); 228 ibm561_regcont(data, IBM561_CMD, 0xff); 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); 235 236 /* let's set up some decent default colour maps and gammas */ 237 for (i=0; i < IBM561_NCMAP_ENTRIES; i++) 238 data->cmap_r[i] = data->cmap_g[i] = data->cmap_b[i] = 0xff; 239 data->cmap_r[0] = data->cmap_g[0] = data->cmap_b[0] = 0x00; 240 data->cmap_r[256] = data->cmap_g[256] = data->cmap_b[256] = 0x00; 241 data->cmap_r[512] = data->cmap_g[512] = data->cmap_b[512] = 0x00; 242 data->cmap_r[768] = data->cmap_g[768] = data->cmap_b[768] = 0x00; 243 244 data->gamma_r[0] = data->gamma_g[0] = data->gamma_b[0] = 0x00; 245 for (i=0; i < IBM561_NGAMMA_ENTRIES; i++) 246 data->gamma_r[i] = data->gamma_g[i] = data->gamma_b[i] = 0xff; 247 248 for (i=0; i < IBM561_NWTYPES; i++) 249 data->wtype[i] = 0x0036; 250 data->wtype[1] = 0x0028; 251 252 /* the last step: */ 253 data->changed = CHANGED_ALL; 254 data->ramdac_sched_update(data->cookie, ibm561_update); 255 } 256 257 int 258 ibm561_set_cmap(struct ramdac_cookie *rc, struct wsdisplay_cmap *cmapp) 259 { 260 struct ibm561data *data = (struct ibm561data *)rc; 261 u_int count, index; 262 uint8_t r[IBM561_NCMAP_ENTRIES]; 263 uint8_t g[IBM561_NCMAP_ENTRIES]; 264 uint8_t b[IBM561_NCMAP_ENTRIES]; 265 int s, error; 266 267 if (cmapp->index >= IBM561_NCMAP_ENTRIES || 268 cmapp->count > IBM561_NCMAP_ENTRIES - cmapp->index) 269 return (EINVAL); 270 271 index = cmapp->index; 272 count = cmapp->count; 273 error = copyin(cmapp->red, &r[index], count); 274 if (error) 275 return error; 276 error = copyin(cmapp->green, &g[index], count); 277 if (error) 278 return error; 279 error = copyin(cmapp->blue, &b[index], count); 280 if (error) 281 return error; 282 s = spltty(); 283 memcpy(&data->cmap_r[index], &r[index], count); 284 memcpy(&data->cmap_g[index], &g[index], count); 285 memcpy(&data->cmap_b[index], &b[index], count); 286 data->changed |= CHANGED_CMAP; 287 data->ramdac_sched_update(data->cookie, ibm561_update); 288 splx(s); 289 return (0); 290 } 291 292 int 293 ibm561_get_cmap(struct ramdac_cookie *rc, struct wsdisplay_cmap *cmapp) 294 { 295 struct ibm561data *data = (struct ibm561data *)rc; 296 u_int count, index; 297 int error; 298 299 if (cmapp->index >= IBM561_NCMAP_ENTRIES || 300 cmapp->count > IBM561_NCMAP_ENTRIES - cmapp->index) 301 return (EINVAL); 302 count = cmapp->count; 303 index = cmapp->index; 304 error = copyout(&data->cmap_r[index], cmapp->red, count); 305 if (error) 306 return (error); 307 error = copyout(&data->cmap_g[index], cmapp->green, count); 308 if (error) 309 return (error); 310 error = copyout(&data->cmap_b[index], cmapp->blue, count); 311 return (error); 312 } 313 314 /* 315 * XXX: 316 * I am leaving these functions returning EINVAL, as they are 317 * not strictly necessary for the correct functioning of the 318 * card and in fact are not used on the other TGA variants, except 319 * they are exported via ioctl(2) to userland, which does not in 320 * fact use them. 321 */ 322 323 int 324 ibm561_set_cursor(struct ramdac_cookie *rc, struct wsdisplay_cursor *cursorp) 325 { 326 return EINVAL; 327 } 328 329 int 330 ibm561_get_cursor(struct ramdac_cookie *rc, struct wsdisplay_cursor *cursorp) 331 { 332 return EINVAL; 333 } 334 335 int 336 ibm561_set_curpos(struct ramdac_cookie *rc, struct wsdisplay_curpos *curposp) 337 { 338 return EINVAL; 339 } 340 341 int 342 ibm561_get_curpos(struct ramdac_cookie *rc, struct wsdisplay_curpos *curposp) 343 { 344 return EINVAL; 345 } 346 347 int 348 ibm561_get_curmax(struct ramdac_cookie *rc, struct wsdisplay_curpos *curposp) 349 { 350 return EINVAL; 351 } 352 353 int 354 ibm561_set_dotclock(struct ramdac_cookie *rc, unsigned dotclock) 355 { 356 struct ibm561data *data = (struct ibm561data *)rc; 357 358 /* XXXrcd: a couple of these are a little hazy, vis a vis 359 * check 175MHz and 202MHz, which are wrong... 360 */ 361 switch (dotclock) { 362 case 25175000: data->vco_div = 0x3e; data->pll_ref = 0x09; break; 363 case 31500000: data->vco_div = 0x17; data->pll_ref = 0x05; break; 364 case 40000000: data->vco_div = 0x42; data->pll_ref = 0x06; break; 365 case 50000000: data->vco_div = 0x45; data->pll_ref = 0x05; break; 366 case 65000000: data->vco_div = 0xac; data->pll_ref = 0x0c; break; 367 case 69000000: data->vco_div = 0xa9; data->pll_ref = 0x0b; break; 368 case 74000000: data->vco_div = 0x9c; data->pll_ref = 0x09; break; 369 case 75000000: data->vco_div = 0x93; data->pll_ref = 0x08; break; 370 case 103994000: data->vco_div = 0x96; data->pll_ref = 0x06; break; 371 case 108180000: data->vco_div = 0xb8; data->pll_ref = 0x08; break; 372 case 110000000: data->vco_div = 0xba; data->pll_ref = 0x08; break; 373 case 119840000: data->vco_div = 0x82; data->pll_ref = 0x04; break; 374 case 130808000: data->vco_div = 0xc8; data->pll_ref = 0x08; break; 375 case 135000000: data->vco_div = 0xc1; data->pll_ref = 0x07; break; 376 case 175000000: data->vco_div = 0xe2; data->pll_ref = 0x07; break; 377 case 202500000: data->vco_div = 0xe2; data->pll_ref = 0x07; break; 378 default: 379 return EINVAL; 380 } 381 382 data->div_dotclock = 0xb0; 383 data->changed |= CHANGED_DOTCLOCK; 384 return 0; 385 } 386 387 /* 388 * Internal Functions 389 */ 390 391 void 392 ibm561_update(void *vp) 393 { 394 struct ibm561data *data = (struct ibm561data *)vp; 395 int i; 396 397 /* XXX see comment above ibm561_cninit() */ 398 if (!data) 399 data = saved_console_data; 400 401 if (data->changed & CHANGED_WTYPE) { 402 ibm561_regbegin(data, IBM561_FB_WINTYPE); 403 for (i=0; i < IBM561_NWTYPES; i++) 404 ibm561_regcont10bit(data, IBM561_CMD_FB_WAT, data->wtype[i]); 405 406 /* XXXrcd: quick hack here for AUX FB table */ 407 ibm561_regbegin(data, IBM561_AUXFB_WINTYPE); 408 for (i=0; i < IBM561_NWTYPES; i++) 409 ibm561_regcont(data, IBM561_CMD, 0x04); 410 411 /* XXXrcd: quick hack here for OL WAT table */ 412 ibm561_regbegin(data, IBM561_OL_WINTYPE); 413 for (i=0; i < IBM561_NWTYPES; i++) 414 ibm561_regcont10bit(data, IBM561_CMD_FB_WAT, 0x0231); 415 416 /* XXXrcd: quick hack here for AUX OL WAT table */ 417 ibm561_regbegin(data, IBM561_AUXOL_WINTYPE); 418 for (i=0; i < IBM561_NWTYPES; i++) 419 ibm561_regcont(data, IBM561_CMD, 0x0c); 420 } 421 422 if (data->changed & CHANGED_CMAP) 423 ibm561_load_cmap(data); 424 425 /* XXX: I am not sure in what situations it is safe to 426 * change the dotclock---hope this is good. 427 */ 428 if (data->changed & CHANGED_DOTCLOCK) 429 ibm561_load_dotclock(data); 430 } 431 432 static void 433 ibm561_load_cmap(struct ibm561data *data) 434 { 435 int i; 436 437 ibm561_regbegin(data, IBM561_CMAP_TABLE); 438 for (i=0; i < IBM561_NCMAP_ENTRIES; i++) { 439 ibm561_regcont(data, IBM561_CMD_CMAP, data->cmap_r[i]); 440 ibm561_regcont(data, IBM561_CMD_CMAP, data->cmap_g[i]); 441 ibm561_regcont(data, IBM561_CMD_CMAP, data->cmap_b[i]); 442 } 443 444 ibm561_regbegin(data, IBM561_RED_GAMMA_TABLE); 445 for (i=0; i < 256; i++) 446 ibm561_regcont10bit(data, IBM561_CMD_GAMMA, data->gamma_r[i]); 447 448 ibm561_regbegin(data, IBM561_GREEN_GAMMA_TABLE); 449 for (i=1; i < 256; i++) 450 ibm561_regcont10bit(data, IBM561_CMD_GAMMA, data->gamma_g[i]); 451 452 ibm561_regbegin(data, IBM561_BLUE_GAMMA_TABLE); 453 for (i=1; i < 256; i++) 454 ibm561_regcont10bit(data, IBM561_CMD_GAMMA, data->gamma_b[i]); 455 456 } 457 458 static void 459 ibm561_load_dotclock(struct ibm561data *data) 460 { 461 /* XXX 462 * we should probably be more pro-active here, but it shouldn't 463 * actually happen... 464 */ 465 if (!data->vco_div || !data->pll_ref || ! data->div_dotclock) { 466 panic("ibm561_load_dotclock: called uninitialized"); 467 } 468 469 ibm561_regwr(data, IBM561_PLL_VCO_DIV, data->vco_div); 470 ibm561_regwr(data, IBM561_PLL_REF_REG, data->pll_ref); 471 ibm561_regwr(data, IBM561_DIV_DOTCLCK, data->div_dotclock); 472 } 473 474 static void 475 ibm561_regcont10bit(struct ibm561data *data, u_int16_t reg, u_int16_t val) 476 { 477 data->ramdac_wr(data->cookie, IBM561_CMD_GAMMA, (val >> 2) & 0xff); 478 data->ramdac_wr(data->cookie, IBM561_CMD_GAMMA, (val & 0x3) << 6); 479 } 480 481 static void 482 ibm561_regbegin(struct ibm561data *data, u_int16_t reg) 483 { 484 data->ramdac_wr(data->cookie, IBM561_ADDR_LOW, reg & 0xff); 485 data->ramdac_wr(data->cookie, IBM561_ADDR_HIGH, (reg >> 8) & 0xff); 486 } 487 488 static void 489 ibm561_regcont(struct ibm561data *data, u_int16_t reg, u_int8_t val) 490 { 491 data->ramdac_wr(data->cookie, reg, val); 492 } 493 494 static void 495 ibm561_regwr(struct ibm561data *data, u_int16_t reg, u_int8_t val) 496 { 497 ibm561_regbegin(data, reg); 498 ibm561_regcont(data, IBM561_CMD, val); 499 } 500
Indexes created Mon Oct 13 05:10:05 GMT 2025