hw/blizzard.c

   1 /*
   2  * Epson S1D13744/S1D13745 (Blizzard/Hailstorm/Tornado) LCD/TV controller.
   3  *
   4  * Copyright (C) 2008 Nokia Corporation
   5  * Written by Andrzej Zaborowski <andrew@openedhand.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 or
  10  * (at your option) version 3 of the License.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include "qemu-common.h"
  22 #include "sysemu.h"
  23 #include "console.h"
  24 #include "devices.h"
  25 #include "vga_int.h"
  26 #include "pixel_ops.h"
  27
  28 typedef void (*blizzard_fn_t)(uint8_t *, const uint8_t *, unsigned int);
  29
  30 typedef struct {
  31     uint8_t reg;
  32     uint32_t addr;
  33     int swallow;
  34
  35     int pll;
  36     int pll_range;
  37     int pll_ctrl;
  38     uint8_t pll_mode;
  39     uint8_t clksel;
  40     int memenable;
  41     int memrefresh;
  42     uint8_t timing[3];
  43     int priority;
  44
  45     uint8_t lcd_config;
  46     int x;
  47     int y;
  48     int skipx;
  49     int skipy;
  50     uint8_t hndp;
  51     uint8_t vndp;
  52     uint8_t hsync;
  53     uint8_t vsync;
  54     uint8_t pclk;
  55     uint8_t u;
  56     uint8_t v;
  57     uint8_t yrc[2];
  58     int ix[2];
  59     int iy[2];
  60     int ox[2];
  61     int oy[2];
  62
  63     int enable;
  64     int blank;
  65     int bpp;
  66     int invalidate;
  67     int mx[2];
  68     int my[2];
  69     uint8_t mode;
  70     uint8_t effect;
  71     uint8_t iformat;
  72     uint8_t source;
  73     DisplayState *state;
  74     blizzard_fn_t *line_fn_tab[2];
  75     void *fb;
  76
  77     uint8_t hssi_config[3];
  78     uint8_t tv_config;
  79     uint8_t tv_timing[4];
  80     uint8_t vbi;
  81     uint8_t tv_x;
  82     uint8_t tv_y;
  83     uint8_t tv_test;
  84     uint8_t tv_filter_config;
  85     uint8_t tv_filter_idx;
  86     uint8_t tv_filter_coeff[0x20];
  87     uint8_t border_r;
  88     uint8_t border_g;
  89     uint8_t border_b;
  90     uint8_t gamma_config;
  91     uint8_t gamma_idx;
  92     uint8_t gamma_lut[0x100];
  93     uint8_t matrix_ena;
  94     uint8_t matrix_coeff[0x12];
  95     uint8_t matrix_r;
  96     uint8_t matrix_g;
  97     uint8_t matrix_b;
  98     uint8_t pm;
  99     uint8_t status;
 100     uint8_t rgbgpio_dir;
 101     uint8_t rgbgpio;
 102     uint8_t gpio_dir;
 103     uint8_t gpio;
 104     uint8_t gpio_edge[2];
 105     uint8_t gpio_irq;
 106     uint8_t gpio_pdown;
 107
 108     struct {
 109         int x;
 110         int y;
 111         int dx;
 112         int dy;
 113         int len;
 114         int buflen;
 115         void *buf;
 116         void *data;
 117         uint16_t *ptr;
 118         int angle;
 119         int pitch;
 120         blizzard_fn_t line_fn;
 121     } data;
 122 } BlizzardState;
 123
 124 /* Bytes(!) per pixel */
 125 static const int blizzard_iformat_bpp[0x10] = {
 126     0,
 127     2,  /* RGB 5:6:5*/
 128     3,  /* RGB 6:6:6 mode 1 */
 129     3,  /* RGB 8:8:8 mode 1 */
 130     0, 0,
 131     4,  /* RGB 6:6:6 mode 2 */
 132     4,  /* RGB 8:8:8 mode 2 */
 133     0,  /* YUV 4:2:2 */
 134     0,  /* YUV 4:2:0 */
 135     0, 0, 0, 0, 0, 0,
 136 };
 137
 138 static inline void blizzard_rgb2yuv(int r, int g, int b,
 139                 int *y, int *u, int *v)
 140 {
 141     *y = 0x10 + ((0x838 * r + 0x1022 * g + 0x322 * b) >> 13);
 142     *u = 0x80 + ((0xe0e * b - 0x04c1 * r - 0x94e * g) >> 13);
 143     *v = 0x80 + ((0xe0e * r - 0x0bc7 * g - 0x247 * b) >> 13);
 144 }
 145
 146 static void blizzard_window(BlizzardState *s)
 147 {
 148     uint8_t *src, *dst;
 149     int bypp[2];
 150     int bypl[3];
 151     int y;
 152     blizzard_fn_t fn = s->data.line_fn;
 153
 154     if (!fn)
 155         return;
 156     if (s->mx[0] > s->data.x)
 157         s->mx[0] = s->data.x;
 158     if (s->my[0] > s->data.y)
 159         s->my[0] = s->data.y;
 160     if (s->mx[1] < s->data.x + s->data.dx)
 161         s->mx[1] = s->data.x + s->data.dx;
 162     if (s->my[1] < s->data.y + s->data.dy)
 163         s->my[1] = s->data.y + s->data.dy;
 164
 165     bypp[0] = s->bpp;
 166     bypp[1] = (ds_get_bits_per_pixel(s->state) + 7) >> 3;
 167     bypl[0] = bypp[0] * s->data.pitch;
 168     bypl[1] = bypp[1] * s->x;
 169     bypl[2] = bypp[0] * s->data.dx;
 170
 171     src = s->data.data;
 172     dst = s->fb + bypl[1] * s->data.y + bypp[1] * s->data.x;
 173     for (y = s->data.dy; y > 0; y --, src += bypl[0], dst += bypl[1])
 174         fn(dst, src, bypl[2]);
 175 }
 176
 177 static int blizzard_transfer_setup(BlizzardState *s)
 178 {
 179     if (s->source > 3 || !s->bpp ||
 180                     s->ix[1] < s->ix[0] || s->iy[1] < s->iy[0])
 181         return 0;
 182
 183     s->data.angle = s->effect & 3;
 184     s->data.line_fn = s->line_fn_tab[!!s->data.angle][s->iformat];
 185     s->data.x = s->ix[0];
 186     s->data.y = s->iy[0];
 187     s->data.dx = s->ix[1] - s->ix[0] + 1;
 188     s->data.dy = s->iy[1] - s->iy[0] + 1;
 189     s->data.len = s->bpp * s->data.dx * s->data.dy;
 190     s->data.pitch = s->data.dx;
 191     if (s->data.len > s->data.buflen) {
 192         s->data.buf = qemu_realloc(s->data.buf, s->data.len);
 193         s->data.buflen = s->data.len;
 194     }
 195     s->data.ptr = s->data.buf;
 196     s->data.data = s->data.buf;
 197     s->data.len /= 2;
 198     return 1;
 199 }
 200
 201 static void blizzard_reset(BlizzardState *s)
 202 {
 203     s->reg = 0;
 204     s->swallow = 0;
 205
 206     s->pll = 9;
 207     s->pll_range = 1;
 208     s->pll_ctrl = 0x14;
 209     s->pll_mode = 0x32;
 210     s->clksel = 0x00;
 211     s->memenable = 0;
 212     s->memrefresh = 0x25c;
 213     s->timing[0] = 0x3f;
 214     s->timing[1] = 0x13;
 215     s->timing[2] = 0x21;
 216     s->priority = 0;
 217
 218     s->lcd_config = 0x74;
 219     s->x = 8;
 220     s->y = 1;
 221     s->skipx = 0;
 222     s->skipy = 0;
 223     s->hndp = 3;
 224     s->vndp = 2;
 225     s->hsync = 1;
 226     s->vsync = 1;
 227     s->pclk = 0x80;
 228
 229     s->ix[0] = 0;
 230     s->ix[1] = 0;
 231     s->iy[0] = 0;
 232     s->iy[1] = 0;
 233     s->ox[0] = 0;
 234     s->ox[1] = 0;
 235     s->oy[0] = 0;
 236     s->oy[1] = 0;
 237
 238     s->yrc[0] = 0x00;
 239     s->yrc[1] = 0x30;
 240     s->u = 0;
 241     s->v = 0;
 242
 243     s->iformat = 3;
 244     s->source = 0;
 245     s->bpp = blizzard_iformat_bpp[s->iformat];
 246
 247     s->hssi_config[0] = 0x00;
 248     s->hssi_config[1] = 0x00;
 249     s->hssi_config[2] = 0x01;
 250     s->tv_config = 0x00;
 251     s->tv_timing[0] = 0x00;
 252     s->tv_timing[1] = 0x00;
 253     s->tv_timing[2] = 0x00;
 254     s->tv_timing[3] = 0x00;
 255     s->vbi = 0x10;
 256     s->tv_x = 0x14;
 257     s->tv_y = 0x03;
 258     s->tv_test = 0x00;
 259     s->tv_filter_config = 0x80;
 260     s->tv_filter_idx = 0x00;
 261     s->border_r = 0x10;
 262     s->border_g = 0x80;
 263     s->border_b = 0x80;
 264     s->gamma_config = 0x00;
 265     s->gamma_idx = 0x00;
 266     s->matrix_ena = 0x00;
 267     memset(&s->matrix_coeff, 0, sizeof(s->matrix_coeff));
 268     s->matrix_r = 0x00;
 269     s->matrix_g = 0x00;
 270     s->matrix_b = 0x00;
 271     s->pm = 0x02;
 272     s->status = 0x00;
 273     s->rgbgpio_dir = 0x00;
 274     s->gpio_dir = 0x00;
 275     s->gpio_edge[0] = 0x00;
 276     s->gpio_edge[1] = 0x00;
 277     s->gpio_irq = 0x00;
 278     s->gpio_pdown = 0xff;
 279 }
 280
 281 static inline void blizzard_invalidate_display(void *opaque) {
 282     BlizzardState *s = (BlizzardState *) opaque;
 283
 284     s->invalidate = 1;
 285 }
 286
 287 static uint16_t blizzard_reg_read(void *opaque, uint8_t reg)
 288 {
 289     BlizzardState *s = (BlizzardState *) opaque;
 290
 291     switch (reg) {
 292     case 0x00:  /* Revision Code */
 293         return 0xa5;
 294
 295     case 0x02:  /* Configuration Readback */
 296         return 0x83;    /* Macrovision OK, CNF[2:0] = 3 */
 297
 298     case 0x04:  /* PLL M-Divider */
 299         return (s->pll - 1) | (1 << 7);
 300     case 0x06:  /* PLL Lock Range Control */
 301         return s->pll_range;
 302     case 0x08:  /* PLL Lock Synthesis Control 0 */
 303         return s->pll_ctrl & 0xff;
 304     case 0x0a:  /* PLL Lock Synthesis Control 1 */
 305         return s->pll_ctrl >> 8;
 306     case 0x0c:  /* PLL Mode Control 0 */
 307         return s->pll_mode;
 308
 309     case 0x0e:  /* Clock-Source Select */
 310         return s->clksel;
 311
 312     case 0x10:  /* Memory Controller Activate */
 313     case 0x14:  /* Memory Controller Bank 0 Status Flag */
 314         return s->memenable;
 315
 316     case 0x18:  /* Auto-Refresh Interval Setting 0 */
 317         return s->memrefresh & 0xff;
 318     case 0x1a:  /* Auto-Refresh Interval Setting 1 */
 319         return s->memrefresh >> 8;
 320
 321     case 0x1c:  /* Power-On Sequence Timing Control */
 322         return s->timing[0];
 323     case 0x1e:  /* Timing Control 0 */
 324         return s->timing[1];
 325     case 0x20:  /* Timing Control 1 */
 326         return s->timing[2];
 327
 328     case 0x24:  /* Arbitration Priority Control */
 329         return s->priority;
 330
 331     case 0x28:  /* LCD Panel Configuration */
 332         return s->lcd_config;
 333
 334     case 0x2a:  /* LCD Horizontal Display Width */
 335         return s->x >> 3;
 336     case 0x2c:  /* LCD Horizontal Non-display Period */
 337         return s->hndp;
 338     case 0x2e:  /* LCD Vertical Display Height 0 */
 339         return s->y & 0xff;
 340     case 0x30:  /* LCD Vertical Display Height 1 */
 341         return s->y >> 8;
 342     case 0x32:  /* LCD Vertical Non-display Period */
 343         return s->vndp;
 344     case 0x34:  /* LCD HS Pulse-width */
 345         return s->hsync;
 346     case 0x36:  /* LCd HS Pulse Start Position */
 347         return s->skipx >> 3;
 348     case 0x38:  /* LCD VS Pulse-width */
 349         return s->vsync;
 350     case 0x3a:  /* LCD VS Pulse Start Position */
 351         return s->skipy;
 352
 353     case 0x3c:  /* PCLK Polarity */
 354         return s->pclk;
 355
 356     case 0x3e:  /* High-speed Serial Interface Tx Configuration Port 0 */
 357         return s->hssi_config[0];
 358     case 0x40:  /* High-speed Serial Interface Tx Configuration Port 1 */
 359         return s->hssi_config[1];
 360     case 0x42:  /* High-speed Serial Interface Tx Mode */
 361         return s->hssi_config[2];
 362     case 0x44:  /* TV Display Configuration */
 363         return s->tv_config;
 364     case 0x46 ... 0x4c: /* TV Vertical Blanking Interval Data bits */
 365         return s->tv_timing[(reg - 0x46) >> 1];
 366     case 0x4e:  /* VBI: Closed Caption / XDS Control / Status */
 367         return s->vbi;
 368     case 0x50:  /* TV Horizontal Start Position */
 369         return s->tv_x;
 370     case 0x52:  /* TV Vertical Start Position */
 371         return s->tv_y;
 372     case 0x54:  /* TV Test Pattern Setting */
 373         return s->tv_test;
 374     case 0x56:  /* TV Filter Setting */
 375         return s->tv_filter_config;
 376     case 0x58:  /* TV Filter Coefficient Index */
 377         return s->tv_filter_idx;
 378     case 0x5a:  /* TV Filter Coefficient Data */
 379         if (s->tv_filter_idx < 0x20)
 380             return s->tv_filter_coeff[s->tv_filter_idx ++];
 381         return 0;
 382
 383     case 0x60:  /* Input YUV/RGB Translate Mode 0 */
 384         return s->yrc[0];
 385     case 0x62:  /* Input YUV/RGB Translate Mode 1 */
 386         return s->yrc[1];
 387     case 0x64:  /* U Data Fix */
 388         return s->u;
 389     case 0x66:  /* V Data Fix */
 390         return s->v;
 391
 392     case 0x68:  /* Display Mode */
 393         return s->mode;
 394
 395     case 0x6a:  /* Special Effects */
 396         return s->effect;
 397
 398     case 0x6c:  /* Input Window X Start Position 0 */
 399         return s->ix[0] & 0xff;
 400     case 0x6e:  /* Input Window X Start Position 1 */
 401         return s->ix[0] >> 3;
 402     case 0x70:  /* Input Window Y Start Position 0 */
 403         return s->ix[0] & 0xff;
 404     case 0x72:  /* Input Window Y Start Position 1 */
 405         return s->ix[0] >> 3;
 406     case 0x74:  /* Input Window X End Position 0 */
 407         return s->ix[1] & 0xff;
 408     case 0x76:  /* Input Window X End Position 1 */
 409         return s->ix[1] >> 3;
 410     case 0x78:  /* Input Window Y End Position 0 */
 411         return s->ix[1] & 0xff;
 412     case 0x7a:  /* Input Window Y End Position 1 */
 413         return s->ix[1] >> 3;
 414     case 0x7c:  /* Output Window X Start Position 0 */
 415         return s->ox[0] & 0xff;
 416     case 0x7e:  /* Output Window X Start Position 1 */
 417         return s->ox[0] >> 3;
 418     case 0x80:  /* Output Window Y Start Position 0 */
 419         return s->oy[0] & 0xff;
 420     case 0x82:  /* Output Window Y Start Position 1 */
 421         return s->oy[0] >> 3;
 422     case 0x84:  /* Output Window X End Position 0 */
 423         return s->ox[1] & 0xff;
 424     case 0x86:  /* Output Window X End Position 1 */
 425         return s->ox[1] >> 3;
 426     case 0x88:  /* Output Window Y End Position 0 */
 427         return s->oy[1] & 0xff;
 428     case 0x8a:  /* Output Window Y End Position 1 */
 429         return s->oy[1] >> 3;
 430
 431     case 0x8c:  /* Input Data Format */
 432         return s->iformat;
 433     case 0x8e:  /* Data Source Select */
 434         return s->source;
 435     case 0x90:  /* Display Memory Data Port */
 436         return 0;
 437
 438     case 0xa8:  /* Border Color 0 */
 439         return s->border_r;
 440     case 0xaa:  /* Border Color 1 */
 441         return s->border_g;
 442     case 0xac:  /* Border Color 2 */
 443         return s->border_b;
 444
 445     case 0xb4:  /* Gamma Correction Enable */
 446         return s->gamma_config;
 447     case 0xb6:  /* Gamma Correction Table Index */
 448         return s->gamma_idx;
 449     case 0xb8:  /* Gamma Correction Table Data */
 450         return s->gamma_lut[s->gamma_idx ++];
 451
 452     case 0xba:  /* 3x3 Matrix Enable */
 453         return s->matrix_ena;
 454     case 0xbc ... 0xde: /* Coefficient Registers */
 455         return s->matrix_coeff[(reg - 0xbc) >> 1];
 456     case 0xe0:  /* 3x3 Matrix Red Offset */
 457         return s->matrix_r;
 458     case 0xe2:  /* 3x3 Matrix Green Offset */
 459         return s->matrix_g;
 460     case 0xe4:  /* 3x3 Matrix Blue Offset */
 461         return s->matrix_b;
 462
 463     case 0xe6:  /* Power-save */
 464         return s->pm;
 465     case 0xe8:  /* Non-display Period Control / Status */
 466         return s->status | (1 << 5);
 467     case 0xea:  /* RGB Interface Control */
 468         return s->rgbgpio_dir;
 469     case 0xec:  /* RGB Interface Status */
 470         return s->rgbgpio;
 471     case 0xee:  /* General-purpose IO Pins Configuration */
 472         return s->gpio_dir;
 473     case 0xf0:  /* General-purpose IO Pins Status / Control */
 474         return s->gpio;
 475     case 0xf2:  /* GPIO Positive Edge Interrupt Trigger */
 476         return s->gpio_edge[0];
 477     case 0xf4:  /* GPIO Negative Edge Interrupt Trigger */
 478         return s->gpio_edge[1];
 479     case 0xf6:  /* GPIO Interrupt Status */
 480         return s->gpio_irq;
 481     case 0xf8:  /* GPIO Pull-down Control */
 482         return s->gpio_pdown;
 483
 484     default:
 485         fprintf(stderr, "%s: unknown register %02x\n", __FUNCTION__, reg);
 486         return 0;
 487     }
 488 }
 489
 490 static void blizzard_reg_write(void *opaque, uint8_t reg, uint16_t value)
 491 {
 492     BlizzardState *s = (BlizzardState *) opaque;
 493
 494     switch (reg) {
 495     case 0x04:  /* PLL M-Divider */
 496         s->pll = (value & 0x3f) + 1;
 497         break;
 498     case 0x06:  /* PLL Lock Range Control */
 499         s->pll_range = value & 3;
 500         break;
 501     case 0x08:  /* PLL Lock Synthesis Control 0 */
 502         s->pll_ctrl &= 0xf00;
 503         s->pll_ctrl |= (value << 0) & 0x0ff;
 504         break;
 505     case 0x0a:  /* PLL Lock Synthesis Control 1 */
 506         s->pll_ctrl &= 0x0ff;
 507         s->pll_ctrl |= (value << 8) & 0xf00;
 508         break;
 509     case 0x0c:  /* PLL Mode Control 0 */
 510         s->pll_mode = value & 0x77;
 511         if ((value & 3) == 0 || (value & 3) == 3)
 512             fprintf(stderr, "%s: wrong PLL Control bits (%i)\n",
 513                     __FUNCTION__, value & 3);
 514         break;
 515
 516     case 0x0e:  /* Clock-Source Select */
 517         s->clksel = value & 0xff;
 518         break;
 519
 520     case 0x10:  /* Memory Controller Activate */
 521         s->memenable = value & 1;
 522         break;
 523     case 0x14:  /* Memory Controller Bank 0 Status Flag */
 524         break;
 525
 526     case 0x18:  /* Auto-Refresh Interval Setting 0 */
 527         s->memrefresh &= 0xf00;
 528         s->memrefresh |= (value << 0) & 0x0ff;
 529         break;
 530     case 0x1a:  /* Auto-Refresh Interval Setting 1 */
 531         s->memrefresh &= 0x0ff;
 532         s->memrefresh |= (value << 8) & 0xf00;
 533         break;
 534
 535     case 0x1c:  /* Power-On Sequence Timing Control */
 536         s->timing[0] = value & 0x7f;
 537         break;
 538     case 0x1e:  /* Timing Control 0 */
 539         s->timing[1] = value & 0x17;
 540         break;
 541     case 0x20:  /* Timing Control 1 */
 542         s->timing[2] = value & 0x35;
 543         break;
 544
 545     case 0x24:  /* Arbitration Priority Control */
 546         s->priority = value & 1;
 547         break;
 548
 549     case 0x28:  /* LCD Panel Configuration */
 550         s->lcd_config = value & 0xff;
 551         if (value & (1 << 7))
 552             fprintf(stderr, "%s: data swap not supported!\n", __FUNCTION__);
 553         break;
 554
 555     case 0x2a:  /* LCD Horizontal Display Width */
 556         s->x = value << 3;
 557         break;
 558     case 0x2c:  /* LCD Horizontal Non-display Period */
 559         s->hndp = value & 0xff;
 560         break;
 561     case 0x2e:  /* LCD Vertical Display Height 0 */
 562         s->y &= 0x300;
 563         s->y |= (value << 0) & 0x0ff;
 564         break;
 565     case 0x30:  /* LCD Vertical Display Height 1 */
 566         s->y &= 0x0ff;
 567         s->y |= (value << 8) & 0x300;
 568         break;
 569     case 0x32:  /* LCD Vertical Non-display Period */
 570         s->vndp = value & 0xff;
 571         break;
 572     case 0x34:  /* LCD HS Pulse-width */
 573         s->hsync = value & 0xff;
 574         break;
 575     case 0x36:  /* LCD HS Pulse Start Position */
 576         s->skipx = value & 0xff;
 577         break;
 578     case 0x38:  /* LCD VS Pulse-width */
 579         s->vsync = value & 0xbf;
 580         break;
 581     case 0x3a:  /* LCD VS Pulse Start Position */
 582         s->skipy = value & 0xff;
 583         break;
 584
 585     case 0x3c:  /* PCLK Polarity */
 586         s->pclk = value & 0x82;
 587         /* Affects calculation of s->hndp, s->hsync and s->skipx.  */
 588         break;
 589
 590     case 0x3e:  /* High-speed Serial Interface Tx Configuration Port 0 */
 591         s->hssi_config[0] = value;
 592         break;
 593     case 0x40:  /* High-speed Serial Interface Tx Configuration Port 1 */
 594         s->hssi_config[1] = value;
 595         if (((value >> 4) & 3) == 3)
 596             fprintf(stderr, "%s: Illegal active-data-links value\n",
 597                             __FUNCTION__);
 598         break;
 599     case 0x42:  /* High-speed Serial Interface Tx Mode */
 600         s->hssi_config[2] = value & 0xbd;
 601         break;
 602
 603     case 0x44:  /* TV Display Configuration */
 604         s->tv_config = value & 0xfe;
 605         break;
 606     case 0x46 ... 0x4c: /* TV Vertical Blanking Interval Data bits 0 */
 607         s->tv_timing[(reg - 0x46) >> 1] = value;
 608         break;
 609     case 0x4e:  /* VBI: Closed Caption / XDS Control / Status */
 610         s->vbi = value;
 611         break;
 612     case 0x50:  /* TV Horizontal Start Position */
 613         s->tv_x = value;
 614         break;
 615     case 0x52:  /* TV Vertical Start Position */
 616         s->tv_y = value & 0x7f;
 617         break;
 618     case 0x54:  /* TV Test Pattern Setting */
 619         s->tv_test = value;
 620         break;
 621     case 0x56:  /* TV Filter Setting */
 622         s->tv_filter_config = value & 0xbf;
 623         break;
 624     case 0x58:  /* TV Filter Coefficient Index */
 625         s->tv_filter_idx = value & 0x1f;
 626         break;
 627     case 0x5a:  /* TV Filter Coefficient Data */
 628         if (s->tv_filter_idx < 0x20)
 629             s->tv_filter_coeff[s->tv_filter_idx ++] = value;
 630         break;
 631
 632     case 0x60:  /* Input YUV/RGB Translate Mode 0 */
 633         s->yrc[0] = value & 0xb0;
 634         break;
 635     case 0x62:  /* Input YUV/RGB Translate Mode 1 */
 636         s->yrc[1] = value & 0x30;
 637         break;
 638     case 0x64:  /* U Data Fix */
 639         s->u = value & 0xff;
 640         break;
 641     case 0x66:  /* V Data Fix */
 642         s->v = value & 0xff;
 643         break;
 644
 645     case 0x68:  /* Display Mode */
 646         if ((s->mode ^ value) & 3)
 647             s->invalidate = 1;
 648         s->mode = value & 0xb7;
 649         s->enable = value & 1;
 650         s->blank = (value >> 1) & 1;
 651         if (value & (1 << 4))
 652             fprintf(stderr, "%s: Macrovision enable attempt!\n", __FUNCTION__);
 653         break;
 654
 655     case 0x6a:  /* Special Effects */
 656         s->effect = value & 0xfb;
 657         break;
 658
 659     case 0x6c:  /* Input Window X Start Position 0 */
 660         s->ix[0] &= 0x300;
 661         s->ix[0] |= (value << 0) & 0x0ff;
 662         break;
 663     case 0x6e:  /* Input Window X Start Position 1 */
 664         s->ix[0] &= 0x0ff;
 665         s->ix[0] |= (value << 8) & 0x300;
 666         break;
 667     case 0x70:  /* Input Window Y Start Position 0 */
 668         s->iy[0] &= 0x300;
 669         s->iy[0] |= (value << 0) & 0x0ff;
 670         break;
 671     case 0x72:  /* Input Window Y Start Position 1 */
 672         s->iy[0] &= 0x0ff;
 673         s->iy[0] |= (value << 8) & 0x300;
 674         break;
 675     case 0x74:  /* Input Window X End Position 0 */
 676         s->ix[1] &= 0x300;
 677         s->ix[1] |= (value << 0) & 0x0ff;
 678         break;
 679     case 0x76:  /* Input Window X End Position 1 */
 680         s->ix[1] &= 0x0ff;
 681         s->ix[1] |= (value << 8) & 0x300;
 682         break;
 683     case 0x78:  /* Input Window Y End Position 0 */
 684         s->iy[1] &= 0x300;
 685         s->iy[1] |= (value << 0) & 0x0ff;
 686         break;
 687     case 0x7a:  /* Input Window Y End Position 1 */
 688         s->iy[1] &= 0x0ff;
 689         s->iy[1] |= (value << 8) & 0x300;
 690         break;
 691     case 0x7c:  /* Output Window X Start Position 0 */
 692         s->ox[0] &= 0x300;
 693         s->ox[0] |= (value << 0) & 0x0ff;
 694         break;
 695     case 0x7e:  /* Output Window X Start Position 1 */
 696         s->ox[0] &= 0x0ff;
 697         s->ox[0] |= (value << 8) & 0x300;
 698         break;
 699     case 0x80:  /* Output Window Y Start Position 0 */
 700         s->oy[0] &= 0x300;
 701         s->oy[0] |= (value << 0) & 0x0ff;
 702         break;
 703     case 0x82:  /* Output Window Y Start Position 1 */
 704         s->oy[0] &= 0x0ff;
 705         s->oy[0] |= (value << 8) & 0x300;
 706         break;
 707     case 0x84:  /* Output Window X End Position 0 */
 708         s->ox[1] &= 0x300;
 709         s->ox[1] |= (value << 0) & 0x0ff;
 710         break;
 711     case 0x86:  /* Output Window X End Position 1 */
 712         s->ox[1] &= 0x0ff;
 713         s->ox[1] |= (value << 8) & 0x300;
 714         break;
 715     case 0x88:  /* Output Window Y End Position 0 */
 716         s->oy[1] &= 0x300;
 717         s->oy[1] |= (value << 0) & 0x0ff;
 718         break;
 719     case 0x8a:  /* Output Window Y End Position 1 */
 720         s->oy[1] &= 0x0ff;
 721         s->oy[1] |= (value << 8) & 0x300;
 722         break;
 723
 724     case 0x8c:  /* Input Data Format */
 725         s->iformat = value & 0xf;
 726         s->bpp = blizzard_iformat_bpp[s->iformat];
 727         if (!s->bpp)
 728             fprintf(stderr, "%s: Illegal or unsupported input format %x\n",
 729                             __FUNCTION__, s->iformat);
 730         break;
 731     case 0x8e:  /* Data Source Select */
 732         s->source = value & 7;
 733         /* Currently all windows will be "destructive overlays".  */
 734         if ((!(s->effect & (1 << 3)) && (s->ix[0] != s->ox[0] ||
 735                                         s->iy[0] != s->oy[0] ||
 736                                         s->ix[1] != s->ox[1] ||
 737                                         s->iy[1] != s->oy[1])) ||
 738                         !((s->ix[1] - s->ix[0]) & (s->iy[1] - s->iy[0]) &
 739                           (s->ox[1] - s->ox[0]) & (s->oy[1] - s->oy[0]) & 1))
 740             fprintf(stderr, "%s: Illegal input/output window positions\n",
 741                             __FUNCTION__);
 742
 743         blizzard_transfer_setup(s);
 744         break;
 745
 746     case 0x90:  /* Display Memory Data Port */
 747         if (!s->data.len && !blizzard_transfer_setup(s))
 748             break;
 749
 750         *s->data.ptr ++ = value;
 751         if (-- s->data.len == 0)
 752             blizzard_window(s);
 753         break;
 754
 755     case 0xa8:  /* Border Color 0 */
 756         s->border_r = value;
 757         break;
 758     case 0xaa:  /* Border Color 1 */
 759         s->border_g = value;
 760         break;
 761     case 0xac:  /* Border Color 2 */
 762         s->border_b = value;
 763         break;
 764
 765     case 0xb4:  /* Gamma Correction Enable */
 766         s->gamma_config = value & 0x87;
 767         break;
 768     case 0xb6:  /* Gamma Correction Table Index */
 769         s->gamma_idx = value;
 770         break;
 771     case 0xb8:  /* Gamma Correction Table Data */
 772         s->gamma_lut[s->gamma_idx ++] = value;
 773         break;
 774
 775     case 0xba:  /* 3x3 Matrix Enable */
 776         s->matrix_ena = value & 1;
 777         break;
 778     case 0xbc ... 0xde: /* Coefficient Registers */
 779         s->matrix_coeff[(reg - 0xbc) >> 1] = value & ((reg & 2) ? 0x80 : 0xff);
 780         break;
 781     case 0xe0:  /* 3x3 Matrix Red Offset */
 782         s->matrix_r = value;
 783         break;
 784     case 0xe2:  /* 3x3 Matrix Green Offset */
 785         s->matrix_g = value;
 786         break;
 787     case 0xe4:  /* 3x3 Matrix Blue Offset */
 788         s->matrix_b = value;
 789         break;
 790
 791     case 0xe6:  /* Power-save */
 792         s->pm = value & 0x83;
 793         if (value & s->mode & 1)
 794             fprintf(stderr, "%s: The display must be disabled before entering "
 795                             "Standby Mode\n", __FUNCTION__);
 796         break;
 797     case 0xe8:  /* Non-display Period Control / Status */
 798         s->status = value & 0x1b;
 799         break;
 800     case 0xea:  /* RGB Interface Control */
 801         s->rgbgpio_dir = value & 0x8f;
 802         break;
 803     case 0xec:  /* RGB Interface Status */
 804         s->rgbgpio = value & 0xcf;
 805         break;
 806     case 0xee:  /* General-purpose IO Pins Configuration */
 807         s->gpio_dir = value;
 808         break;
 809     case 0xf0:  /* General-purpose IO Pins Status / Control */
 810         s->gpio = value;
 811         break;
 812     case 0xf2:  /* GPIO Positive Edge Interrupt Trigger */
 813         s->gpio_edge[0] = value;
 814         break;
 815     case 0xf4:  /* GPIO Negative Edge Interrupt Trigger */
 816         s->gpio_edge[1] = value;
 817         break;
 818     case 0xf6:  /* GPIO Interrupt Status */
 819         s->gpio_irq &= value;
 820         break;
 821     case 0xf8:  /* GPIO Pull-down Control */
 822         s->gpio_pdown = value;
 823         break;
 824
 825     default:
 826         fprintf(stderr, "%s: unknown register %02x\n", __FUNCTION__, reg);
 827         break;
 828     }
 829 }
 830
 831 uint16_t s1d13745_read(void *opaque, int dc)
 832 {
 833     BlizzardState *s = (BlizzardState *) opaque;
 834     uint16_t value = blizzard_reg_read(s, s->reg);
 835
 836     if (s->swallow -- > 0)
 837         return 0;
 838     if (dc)
 839         s->reg ++;
 840
 841     return value;
 842 }
 843
 844 void s1d13745_write(void *opaque, int dc, uint16_t value)
 845 {
 846     BlizzardState *s = (BlizzardState *) opaque;
 847
 848     if (s->swallow -- > 0)
 849         return;
 850     if (dc) {
 851         blizzard_reg_write(s, s->reg, value);
 852
 853         if (s->reg != 0x90 && s->reg != 0x5a && s->reg != 0xb8)
 854             s->reg += 2;
 855     } else
 856         s->reg = value & 0xff;
 857 }
 858
 859 void s1d13745_write_block(void *opaque, int dc,
 860                 void *buf, size_t len, int pitch)
 861 {
 862     BlizzardState *s = (BlizzardState *) opaque;
 863
 864     while (len > 0) {
 865         if (s->reg == 0x90 && dc &&
 866                         (s->data.len || blizzard_transfer_setup(s)) &&
 867                         len >= (s->data.len << 1)) {
 868             len -= s->data.len << 1;
 869             s->data.len = 0;
 870             s->data.data = buf;
 871             if (pitch)
 872                 s->data.pitch = pitch;
 873             blizzard_window(s);
 874             s->data.data = s->data.buf;
 875             continue;
 876         }
 877
 878         s1d13745_write(opaque, dc, *(uint16_t *) buf);
 879         len -= 2;
 880         buf += 2;
 881     }
 882
 883     return;
 884 }
 885
 886 static void blizzard_update_display(void *opaque)
 887 {
 888     BlizzardState *s = (BlizzardState *) opaque;
 889     int y, bypp, bypl, bwidth;
 890     uint8_t *src, *dst;
 891
 892     if (!s->enable)
 893         return;
 894
 895     if (s->x != ds_get_width(s->state) || s->y != ds_get_height(s->state)) {
 896         s->invalidate = 1;
 897         qemu_console_resize(s->state, s->x, s->y);
 898     }
 899
 900     if (s->invalidate) {
 901         s->invalidate = 0;
 902
 903         if (s->blank) {
 904             bypp = (ds_get_bits_per_pixel(s->state) + 7) >> 3;
 905             memset(ds_get_data(s->state), 0, bypp * s->x * s->y);
 906             return;
 907         }
 908
 909         s->mx[0] = 0;
 910         s->mx[1] = s->x;
 911         s->my[0] = 0;
 912         s->my[1] = s->y;
 913     }
 914
 915     if (s->mx[1] <= s->mx[0])
 916         return;
 917
 918     bypp = (ds_get_bits_per_pixel(s->state) + 7) >> 3;
 919     bypl = bypp * s->x;
 920     bwidth = bypp * (s->mx[1] - s->mx[0]);
 921     y = s->my[0];
 922     src = s->fb + bypl * y + bypp * s->mx[0];
 923     dst = ds_get_data(s->state) + bypl * y + bypp * s->mx[0];
 924     for (; y < s->my[1]; y ++, src += bypl, dst += bypl)
 925         memcpy(dst, src, bwidth);
 926
 927     dpy_update(s->state, s->mx[0], s->my[0],
 928                     s->mx[1] - s->mx[0], y - s->my[0]);
 929
 930     s->mx[0] = s->x;
 931     s->mx[1] = 0;
 932     s->my[0] = s->y;
 933     s->my[1] = 0;
 934 }
 935
 936 static void blizzard_screen_dump(void *opaque, const char *filename) {
 937     BlizzardState *s = (BlizzardState *) opaque;
 938
 939     blizzard_update_display(opaque);
 940     if (s && ds_get_data(s->state))
 941         ppm_save(filename, s->state->surface);
 942 }
 943
 944 #define DEPTH 8
 945 #include "blizzard_template.h"
 946 #define DEPTH 15
 947 #include "blizzard_template.h"
 948 #define DEPTH 16
 949 #include "blizzard_template.h"
 950 #define DEPTH 24
 951 #include "blizzard_template.h"
 952 #define DEPTH 32
 953 #include "blizzard_template.h"
 954
 955 void *s1d13745_init(qemu_irq gpio_int)
 956 {
 957     BlizzardState *s = (BlizzardState *) qemu_mallocz(sizeof(*s));
 958
 959     s->fb = qemu_malloc(0x180000);
 960
 961     s->state = graphic_console_init(blizzard_update_display,
 962                                  blizzard_invalidate_display,
 963                                  blizzard_screen_dump, NULL, s);
 964
 965     switch (ds_get_bits_per_pixel(s->state)) {
 966     case 0:
 967         s->line_fn_tab[0] = s->line_fn_tab[1] =
 968                 qemu_mallocz(sizeof(blizzard_fn_t) * 0x10);
 969         break;
 970     case 8:
 971         s->line_fn_tab[0] = blizzard_draw_fn_8;
 972         s->line_fn_tab[1] = blizzard_draw_fn_r_8;
 973         break;
 974     case 15:
 975         s->line_fn_tab[0] = blizzard_draw_fn_15;
 976         s->line_fn_tab[1] = blizzard_draw_fn_r_15;
 977         break;
 978     case 16:
 979         s->line_fn_tab[0] = blizzard_draw_fn_16;
 980         s->line_fn_tab[1] = blizzard_draw_fn_r_16;
 981         break;
 982     case 24:
 983         s->line_fn_tab[0] = blizzard_draw_fn_24;
 984         s->line_fn_tab[1] = blizzard_draw_fn_r_24;
 985         break;
 986     case 32:
 987         s->line_fn_tab[0] = blizzard_draw_fn_32;
 988         s->line_fn_tab[1] = blizzard_draw_fn_r_32;
 989         break;
 990     default:
 991         fprintf(stderr, "%s: Bad color depth\n", __FUNCTION__);
 992         exit(1);
 993     }
 994
 995     blizzard_reset(s);
 996
 997     return s;
 998 }