hw/display/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/osdep.h"
  22 #include "qemu/bitops.h"
  23 #include "ui/console.h"
  24 #include "hw/display/blizzard.h"
  25 #include "ui/pixel_ops.h"
  26
  27 typedef void (*blizzard_fn_t)(uint8_t *, const uint8_t *, unsigned int);
  28
  29 typedef struct {
  30     uint8_t reg;
  31     uint32_t addr;
  32     int swallow;
  33
  34     int pll;
  35     int pll_range;
  36     int pll_ctrl;
  37     uint8_t pll_mode;
  38     uint8_t clksel;
  39     int memenable;
  40     int memrefresh;
  41     uint8_t timing[3];
  42     int priority;
  43
  44     uint8_t lcd_config;
  45     int x;
  46     int y;
  47     int skipx;
  48     int skipy;
  49     uint8_t hndp;
  50     uint8_t vndp;
  51     uint8_t hsync;
  52     uint8_t vsync;
  53     uint8_t pclk;
  54     uint8_t u;
  55     uint8_t v;
  56     uint8_t yrc[2];
  57     int ix[2];
  58     int iy[2];
  59     int ox[2];
  60     int oy[2];
  61
  62     int enable;
  63     int blank;
  64     int bpp;
  65     int invalidate;
  66     int mx[2];
  67     int my[2];
  68     uint8_t mode;
  69     uint8_t effect;
  70     uint8_t iformat;
  71     uint8_t source;
  72     QemuConsole *con;
  73     blizzard_fn_t *line_fn_tab[2];
  74     void *fb;
  75
  76     uint8_t hssi_config[3];
  77     uint8_t tv_config;
  78     uint8_t tv_timing[4];
  79     uint8_t vbi;
  80     uint8_t tv_x;
  81     uint8_t tv_y;
  82     uint8_t tv_test;
  83     uint8_t tv_filter_config;
  84     uint8_t tv_filter_idx;
  85     uint8_t tv_filter_coeff[0x20];
  86     uint8_t border_r;
  87     uint8_t border_g;
  88     uint8_t border_b;
  89     uint8_t gamma_config;
  90     uint8_t gamma_idx;
  91     uint8_t gamma_lut[0x100];
  92     uint8_t matrix_ena;
  93     uint8_t matrix_coeff[0x12];
  94     uint8_t matrix_r;
  95     uint8_t matrix_g;
  96     uint8_t matrix_b;
  97     uint8_t pm;
  98     uint8_t status;
  99     uint8_t rgbgpio_dir;
 100     uint8_t rgbgpio;
 101     uint8_t gpio_dir;
 102     uint8_t gpio;
 103     uint8_t gpio_edge[2];
 104     uint8_t gpio_irq;
 105     uint8_t gpio_pdown;
 106
 107     struct {
 108         int x;
 109         int y;
 110         int dx;
 111         int dy;
 112         int len;
 113         int buflen;
 114         void *buf;
 115         void *data;
 116         uint16_t *ptr;
 117         int angle;
 118         int pitch;
 119         blizzard_fn_t line_fn;
 120     } data;
 121 } BlizzardState;
 122
 123 /* Bytes(!) per pixel */
 124 static const int blizzard_iformat_bpp[0x10] = {
 125     0,
 126     2,  /* RGB 5:6:5*/
 127     3,  /* RGB 6:6:6 mode 1 */
 128     3,  /* RGB 8:8:8 mode 1 */
 129     0, 0,
 130     4,  /* RGB 6:6:6 mode 2 */
 131     4,  /* RGB 8:8:8 mode 2 */
 132     0,  /* YUV 4:2:2 */
 133     0,  /* YUV 4:2:0 */
 134     0, 0, 0, 0, 0, 0,
 135 };
 136
 137 static void blizzard_window(BlizzardState *s)
 138 {
 139     DisplaySurface *surface = qemu_console_surface(s->con);
 140     uint8_t *src, *dst;
 141     int bypp[2];
 142     int bypl[3];
 143     int y;
 144     blizzard_fn_t fn = s->data.line_fn;
 145
 146     if (!fn)
 147         return;
 148     if (s->mx[0] > s->data.x)
 149         s->mx[0] = s->data.x;
 150     if (s->my[0] > s->data.y)
 151         s->my[0] = s->data.y;
 152     if (s->mx[1] < s->data.x + s->data.dx)
 153         s->mx[1] = s->data.x + s->data.dx;
 154     if (s->my[1] < s->data.y + s->data.dy)
 155         s->my[1] = s->data.y + s->data.dy;
 156
 157     bypp[0] = s->bpp;
 158     bypp[1] = surface_bytes_per_pixel(surface);
 159     bypl[0] = bypp[0] * s->data.pitch;
 160     bypl[1] = bypp[1] * s->x;
 161     bypl[2] = bypp[0] * s->data.dx;
 162
 163     src = s->data.data;
 164     dst = s->fb + bypl[1] * s->data.y + bypp[1] * s->data.x;
 165     for (y = s->data.dy; y > 0; y --, src += bypl[0], dst += bypl[1])
 166         fn(dst, src, bypl[2]);
 167 }
 168
 169 static int blizzard_transfer_setup(BlizzardState *s)
 170 {
 171     if (s->source > 3 || !s->bpp ||
 172                     s->ix[1] < s->ix[0] || s->iy[1] < s->iy[0])
 173         return 0;
 174
 175     s->data.angle = s->effect & 3;
 176     s->data.line_fn = s->line_fn_tab[!!s->data.angle][s->iformat];
 177     s->data.x = s->ix[0];
 178     s->data.y = s->iy[0];
 179     s->data.dx = s->ix[1] - s->ix[0] + 1;
 180     s->data.dy = s->iy[1] - s->iy[0] + 1;
 181     s->data.len = s->bpp * s->data.dx * s->data.dy;
 182     s->data.pitch = s->data.dx;
 183     if (s->data.len > s->data.buflen) {
 184         s->data.buf = g_realloc(s->data.buf, s->data.len);
 185         s->data.buflen = s->data.len;
 186     }
 187     s->data.ptr = s->data.buf;
 188     s->data.data = s->data.buf;
 189     s->data.len /= 2;
 190     return 1;
 191 }
 192
 193 static void blizzard_reset(BlizzardState *s)
 194 {
 195     s->reg = 0;
 196     s->swallow = 0;
 197
 198     s->pll = 9;
 199     s->pll_range = 1;
 200     s->pll_ctrl = 0x14;
 201     s->pll_mode = 0x32;
 202     s->clksel = 0x00;
 203     s->memenable = 0;
 204     s->memrefresh = 0x25c;
 205     s->timing[0] = 0x3f;
 206     s->timing[1] = 0x13;
 207     s->timing[2] = 0x21;
 208     s->priority = 0;
 209
 210     s->lcd_config = 0x74;
 211     s->x = 8;
 212     s->y = 1;
 213     s->skipx = 0;
 214     s->skipy = 0;
 215     s->hndp = 3;
 216     s->vndp = 2;
 217     s->hsync = 1;
 218     s->vsync = 1;
 219     s->pclk = 0x80;
 220
 221     s->ix[0] = 0;
 222     s->ix[1] = 0;
 223     s->iy[0] = 0;
 224     s->iy[1] = 0;
 225     s->ox[0] = 0;
 226     s->ox[1] = 0;
 227     s->oy[0] = 0;
 228     s->oy[1] = 0;
 229
 230     s->yrc[0] = 0x00;
 231     s->yrc[1] = 0x30;
 232     s->u = 0;
 233     s->v = 0;
 234
 235     s->iformat = 3;
 236     s->source = 0;
 237     s->bpp = blizzard_iformat_bpp[s->iformat];
 238
 239     s->hssi_config[0] = 0x00;
 240     s->hssi_config[1] = 0x00;
 241     s->hssi_config[2] = 0x01;
 242     s->tv_config = 0x00;
 243     s->tv_timing[0] = 0x00;
 244     s->tv_timing[1] = 0x00;
 245     s->tv_timing[2] = 0x00;
 246     s->tv_timing[3] = 0x00;
 247     s->vbi = 0x10;
 248     s->tv_x = 0x14;
 249     s->tv_y = 0x03;
 250     s->tv_test = 0x00;
 251     s->tv_filter_config = 0x80;
 252     s->tv_filter_idx = 0x00;
 253     s->border_r = 0x10;
 254     s->border_g = 0x80;
 255     s->border_b = 0x80;
 256     s->gamma_config = 0x00;
 257     s->gamma_idx = 0x00;
 258     s->matrix_ena = 0x00;
 259     memset(&s->matrix_coeff, 0, sizeof(s->matrix_coeff));
 260     s->matrix_r = 0x00;
 261     s->matrix_g = 0x00;
 262     s->matrix_b = 0x00;
 263     s->pm = 0x02;
 264     s->status = 0x00;
 265     s->rgbgpio_dir = 0x00;
 266     s->gpio_dir = 0x00;
 267     s->gpio_edge[0] = 0x00;
 268     s->gpio_edge[1] = 0x00;
 269     s->gpio_irq = 0x00;
 270     s->gpio_pdown = 0xff;
 271 }
 272
 273 static inline void blizzard_invalidate_display(void *opaque) {
 274     BlizzardState *s = (BlizzardState *) opaque;
 275
 276     s->invalidate = 1;
 277 }
 278
 279 static uint16_t blizzard_reg_read(void *opaque, uint8_t reg)
 280 {
 281     BlizzardState *s = (BlizzardState *) opaque;
 282
 283     switch (reg) {
 284     case 0x00:  /* Revision Code */
 285         return 0xa5;
 286
 287     case 0x02:  /* Configuration Readback */
 288         return 0x83;    /* Macrovision OK, CNF[2:0] = 3 */
 289
 290     case 0x04:  /* PLL M-Divider */
 291         return (s->pll - 1) | (1 << 7);
 292     case 0x06:  /* PLL Lock Range Control */
 293         return s->pll_range;
 294     case 0x08:  /* PLL Lock Synthesis Control 0 */
 295         return s->pll_ctrl & 0xff;
 296     case 0x0a:  /* PLL Lock Synthesis Control 1 */
 297         return s->pll_ctrl >> 8;
 298     case 0x0c:  /* PLL Mode Control 0 */
 299         return s->pll_mode;
 300
 301     case 0x0e:  /* Clock-Source Select */
 302         return s->clksel;
 303
 304     case 0x10:  /* Memory Controller Activate */
 305     case 0x14:  /* Memory Controller Bank 0 Status Flag */
 306         return s->memenable;
 307
 308     case 0x18:  /* Auto-Refresh Interval Setting 0 */
 309         return s->memrefresh & 0xff;
 310     case 0x1a:  /* Auto-Refresh Interval Setting 1 */
 311         return s->memrefresh >> 8;
 312
 313     case 0x1c:  /* Power-On Sequence Timing Control */
 314         return s->timing[0];
 315     case 0x1e:  /* Timing Control 0 */
 316         return s->timing[1];
 317     case 0x20:  /* Timing Control 1 */
 318         return s->timing[2];
 319
 320     case 0x24:  /* Arbitration Priority Control */
 321         return s->priority;
 322
 323     case 0x28:  /* LCD Panel Configuration */
 324         return s->lcd_config;
 325
 326     case 0x2a:  /* LCD Horizontal Display Width */
 327         return s->x >> 3;
 328     case 0x2c:  /* LCD Horizontal Non-display Period */
 329         return s->hndp;
 330     case 0x2e:  /* LCD Vertical Display Height 0 */
 331         return s->y & 0xff;
 332     case 0x30:  /* LCD Vertical Display Height 1 */
 333         return s->y >> 8;
 334     case 0x32:  /* LCD Vertical Non-display Period */
 335         return s->vndp;
 336     case 0x34:  /* LCD HS Pulse-width */
 337         return s->hsync;
 338     case 0x36:  /* LCd HS Pulse Start Position */
 339         return s->skipx >> 3;
 340     case 0x38:  /* LCD VS Pulse-width */
 341         return s->vsync;
 342     case 0x3a:  /* LCD VS Pulse Start Position */
 343         return s->skipy;
 344
 345     case 0x3c:  /* PCLK Polarity */
 346         return s->pclk;
 347
 348     case 0x3e:  /* High-speed Serial Interface Tx Configuration Port 0 */
 349         return s->hssi_config[0];
 350     case 0x40:  /* High-speed Serial Interface Tx Configuration Port 1 */
 351         return s->hssi_config[1];
 352     case 0x42:  /* High-speed Serial Interface Tx Mode */
 353         return s->hssi_config[2];
 354     case 0x44:  /* TV Display Configuration */
 355         return s->tv_config;
 356     case 0x46 ... 0x4c: /* TV Vertical Blanking Interval Data bits */
 357         return s->tv_timing[(reg - 0x46) >> 1];
 358     case 0x4e:  /* VBI: Closed Caption / XDS Control / Status */
 359         return s->vbi;
 360     case 0x50:  /* TV Horizontal Start Position */
 361         return s->tv_x;
 362     case 0x52:  /* TV Vertical Start Position */
 363         return s->tv_y;
 364     case 0x54:  /* TV Test Pattern Setting */
 365         return s->tv_test;
 366     case 0x56:  /* TV Filter Setting */
 367         return s->tv_filter_config;
 368     case 0x58:  /* TV Filter Coefficient Index */
 369         return s->tv_filter_idx;
 370     case 0x5a:  /* TV Filter Coefficient Data */
 371         if (s->tv_filter_idx < 0x20)
 372             return s->tv_filter_coeff[s->tv_filter_idx ++];
 373         return 0;
 374
 375     case 0x60:  /* Input YUV/RGB Translate Mode 0 */
 376         return s->yrc[0];
 377     case 0x62:  /* Input YUV/RGB Translate Mode 1 */
 378         return s->yrc[1];
 379     case 0x64:  /* U Data Fix */
 380         return s->u;
 381     case 0x66:  /* V Data Fix */
 382         return s->v;
 383
 384     case 0x68:  /* Display Mode */
 385         return s->mode;
 386
 387     case 0x6a:  /* Special Effects */
 388         return s->effect;
 389
 390     case 0x6c:  /* Input Window X Start Position 0 */
 391         return s->ix[0] & 0xff;
 392     case 0x6e:  /* Input Window X Start Position 1 */
 393         return s->ix[0] >> 3;
 394     case 0x70:  /* Input Window Y Start Position 0 */
 395         return s->ix[0] & 0xff;
 396     case 0x72:  /* Input Window Y Start Position 1 */
 397         return s->ix[0] >> 3;
 398     case 0x74:  /* Input Window X End Position 0 */
 399         return s->ix[1] & 0xff;
 400     case 0x76:  /* Input Window X End Position 1 */
 401         return s->ix[1] >> 3;
 402     case 0x78:  /* Input Window Y End Position 0 */
 403         return s->ix[1] & 0xff;
 404     case 0x7a:  /* Input Window Y End Position 1 */
 405         return s->ix[1] >> 3;
 406     case 0x7c:  /* Output Window X Start Position 0 */
 407         return s->ox[0] & 0xff;
 408     case 0x7e:  /* Output Window X Start Position 1 */
 409         return s->ox[0] >> 3;
 410     case 0x80:  /* Output Window Y Start Position 0 */
 411         return s->oy[0] & 0xff;
 412     case 0x82:  /* Output Window Y Start Position 1 */
 413         return s->oy[0] >> 3;
 414     case 0x84:  /* Output Window X End Position 0 */
 415         return s->ox[1] & 0xff;
 416     case 0x86:  /* Output Window X End Position 1 */
 417         return s->ox[1] >> 3;
 418     case 0x88:  /* Output Window Y End Position 0 */
 419         return s->oy[1] & 0xff;
 420     case 0x8a:  /* Output Window Y End Position 1 */
 421         return s->oy[1] >> 3;
 422
 423     case 0x8c:  /* Input Data Format */
 424         return s->iformat;
 425     case 0x8e:  /* Data Source Select */
 426         return s->source;
 427     case 0x90:  /* Display Memory Data Port */
 428         return 0;
 429
 430     case 0xa8:  /* Border Color 0 */
 431         return s->border_r;
 432     case 0xaa:  /* Border Color 1 */
 433         return s->border_g;
 434     case 0xac:  /* Border Color 2 */
 435         return s->border_b;
 436
 437     case 0xb4:  /* Gamma Correction Enable */
 438         return s->gamma_config;
 439     case 0xb6:  /* Gamma Correction Table Index */
 440         return s->gamma_idx;
 441     case 0xb8:  /* Gamma Correction Table Data */
 442         return s->gamma_lut[s->gamma_idx ++];
 443
 444     case 0xba:  /* 3x3 Matrix Enable */
 445         return s->matrix_ena;
 446     case 0xbc ... 0xde: /* Coefficient Registers */
 447         return s->matrix_coeff[(reg - 0xbc) >> 1];
 448     case 0xe0:  /* 3x3 Matrix Red Offset */
 449         return s->matrix_r;
 450     case 0xe2:  /* 3x3 Matrix Green Offset */
 451         return s->matrix_g;
 452     case 0xe4:  /* 3x3 Matrix Blue Offset */
 453         return s->matrix_b;
 454
 455     case 0xe6:  /* Power-save */
 456         return s->pm;
 457     case 0xe8:  /* Non-display Period Control / Status */
 458         return s->status | (1 << 5);
 459     case 0xea:  /* RGB Interface Control */
 460         return s->rgbgpio_dir;
 461     case 0xec:  /* RGB Interface Status */
 462         return s->rgbgpio;
 463     case 0xee:  /* General-purpose IO Pins Configuration */
 464         return s->gpio_dir;
 465     case 0xf0:  /* General-purpose IO Pins Status / Control */
 466         return s->gpio;
 467     case 0xf2:  /* GPIO Positive Edge Interrupt Trigger */
 468         return s->gpio_edge[0];
 469     case 0xf4:  /* GPIO Negative Edge Interrupt Trigger */
 470         return s->gpio_edge[1];
 471     case 0xf6:  /* GPIO Interrupt Status */
 472         return s->gpio_irq;
 473     case 0xf8:  /* GPIO Pull-down Control */
 474         return s->gpio_pdown;
 475
 476     default:
 477         fprintf(stderr, "%s: unknown register %02x\n", __func__, reg);
 478         return 0;
 479     }
 480 }
 481
 482 static void blizzard_reg_write(void *opaque, uint8_t reg, uint16_t value)
 483 {
 484     BlizzardState *s = (BlizzardState *) opaque;
 485
 486     switch (reg) {
 487     case 0x04:  /* PLL M-Divider */
 488         s->pll = (value & 0x3f) + 1;
 489         break;
 490     case 0x06:  /* PLL Lock Range Control */
 491         s->pll_range = value & 3;
 492         break;
 493     case 0x08:  /* PLL Lock Synthesis Control 0 */
 494         s->pll_ctrl &= 0xf00;
 495         s->pll_ctrl |= (value << 0) & 0x0ff;
 496         break;
 497     case 0x0a:  /* PLL Lock Synthesis Control 1 */
 498         s->pll_ctrl &= 0x0ff;
 499         s->pll_ctrl |= (value << 8) & 0xf00;
 500         break;
 501     case 0x0c:  /* PLL Mode Control 0 */
 502         s->pll_mode = value & 0x77;
 503         if ((value & 3) == 0 || (value & 3) == 3)
 504             fprintf(stderr, "%s: wrong PLL Control bits (%i)\n",
 505                     __func__, value & 3);
 506         break;
 507
 508     case 0x0e:  /* Clock-Source Select */
 509         s->clksel = value & 0xff;
 510         break;
 511
 512     case 0x10:  /* Memory Controller Activate */
 513         s->memenable = value & 1;
 514         break;
 515     case 0x14:  /* Memory Controller Bank 0 Status Flag */
 516         break;
 517
 518     case 0x18:  /* Auto-Refresh Interval Setting 0 */
 519         s->memrefresh &= 0xf00;
 520         s->memrefresh |= (value << 0) & 0x0ff;
 521         break;
 522     case 0x1a:  /* Auto-Refresh Interval Setting 1 */
 523         s->memrefresh &= 0x0ff;
 524         s->memrefresh |= (value << 8) & 0xf00;
 525         break;
 526
 527     case 0x1c:  /* Power-On Sequence Timing Control */
 528         s->timing[0] = value & 0x7f;
 529         break;
 530     case 0x1e:  /* Timing Control 0 */
 531         s->timing[1] = value & 0x17;
 532         break;
 533     case 0x20:  /* Timing Control 1 */
 534         s->timing[2] = value & 0x35;
 535         break;
 536
 537     case 0x24:  /* Arbitration Priority Control */
 538         s->priority = value & 1;
 539         break;
 540
 541     case 0x28:  /* LCD Panel Configuration */
 542         s->lcd_config = value & 0xff;
 543         if (value & (1 << 7))
 544             fprintf(stderr, "%s: data swap not supported!\n", __func__);
 545         break;
 546
 547     case 0x2a:  /* LCD Horizontal Display Width */
 548         s->x = value << 3;
 549         break;
 550     case 0x2c:  /* LCD Horizontal Non-display Period */
 551         s->hndp = value & 0xff;
 552         break;
 553     case 0x2e:  /* LCD Vertical Display Height 0 */
 554         s->y &= 0x300;
 555         s->y |= (value << 0) & 0x0ff;
 556         break;
 557     case 0x30:  /* LCD Vertical Display Height 1 */
 558         s->y &= 0x0ff;
 559         s->y |= (value << 8) & 0x300;
 560         break;
 561     case 0x32:  /* LCD Vertical Non-display Period */
 562         s->vndp = value & 0xff;
 563         break;
 564     case 0x34:  /* LCD HS Pulse-width */
 565         s->hsync = value & 0xff;
 566         break;
 567     case 0x36:  /* LCD HS Pulse Start Position */
 568         s->skipx = value & 0xff;
 569         break;
 570     case 0x38:  /* LCD VS Pulse-width */
 571         s->vsync = value & 0xbf;
 572         break;
 573     case 0x3a:  /* LCD VS Pulse Start Position */
 574         s->skipy = value & 0xff;
 575         break;
 576
 577     case 0x3c:  /* PCLK Polarity */
 578         s->pclk = value & 0x82;
 579         /* Affects calculation of s->hndp, s->hsync and s->skipx.  */
 580         break;
 581
 582     case 0x3e:  /* High-speed Serial Interface Tx Configuration Port 0 */
 583         s->hssi_config[0] = value;
 584         break;
 585     case 0x40:  /* High-speed Serial Interface Tx Configuration Port 1 */
 586         s->hssi_config[1] = value;
 587         if (((value >> 4) & 3) == 3)
 588             fprintf(stderr, "%s: Illegal active-data-links value\n",
 589                             __func__);
 590         break;
 591     case 0x42:  /* High-speed Serial Interface Tx Mode */
 592         s->hssi_config[2] = value & 0xbd;
 593         break;
 594
 595     case 0x44:  /* TV Display Configuration */
 596         s->tv_config = value & 0xfe;
 597         break;
 598     case 0x46 ... 0x4c: /* TV Vertical Blanking Interval Data bits 0 */
 599         s->tv_timing[(reg - 0x46) >> 1] = value;
 600         break;
 601     case 0x4e:  /* VBI: Closed Caption / XDS Control / Status */
 602         s->vbi = value;
 603         break;
 604     case 0x50:  /* TV Horizontal Start Position */
 605         s->tv_x = value;
 606         break;
 607     case 0x52:  /* TV Vertical Start Position */
 608         s->tv_y = value & 0x7f;
 609         break;
 610     case 0x54:  /* TV Test Pattern Setting */
 611         s->tv_test = value;
 612         break;
 613     case 0x56:  /* TV Filter Setting */
 614         s->tv_filter_config = value & 0xbf;
 615         break;
 616     case 0x58:  /* TV Filter Coefficient Index */
 617         s->tv_filter_idx = value & 0x1f;
 618         break;
 619     case 0x5a:  /* TV Filter Coefficient Data */
 620         if (s->tv_filter_idx < 0x20)
 621             s->tv_filter_coeff[s->tv_filter_idx ++] = value;
 622         break;
 623
 624     case 0x60:  /* Input YUV/RGB Translate Mode 0 */
 625         s->yrc[0] = value & 0xb0;
 626         break;
 627     case 0x62:  /* Input YUV/RGB Translate Mode 1 */
 628         s->yrc[1] = value & 0x30;
 629         break;
 630     case 0x64:  /* U Data Fix */
 631         s->u = value & 0xff;
 632         break;
 633     case 0x66:  /* V Data Fix */
 634         s->v = value & 0xff;
 635         break;
 636
 637     case 0x68:  /* Display Mode */
 638         if ((s->mode ^ value) & 3)
 639             s->invalidate = 1;
 640         s->mode = value & 0xb7;
 641         s->enable = value & 1;
 642         s->blank = (value >> 1) & 1;
 643         if (value & (1 << 4))
 644             fprintf(stderr, "%s: Macrovision enable attempt!\n", __func__);
 645         break;
 646
 647     case 0x6a:  /* Special Effects */
 648         s->effect = value & 0xfb;
 649         break;
 650
 651     case 0x6c:  /* Input Window X Start Position 0 */
 652         s->ix[0] &= 0x300;
 653         s->ix[0] |= (value << 0) & 0x0ff;
 654         break;
 655     case 0x6e:  /* Input Window X Start Position 1 */
 656         s->ix[0] &= 0x0ff;
 657         s->ix[0] |= (value << 8) & 0x300;
 658         break;
 659     case 0x70:  /* Input Window Y Start Position 0 */
 660         s->iy[0] &= 0x300;
 661         s->iy[0] |= (value << 0) & 0x0ff;
 662         break;
 663     case 0x72:  /* Input Window Y Start Position 1 */
 664         s->iy[0] &= 0x0ff;
 665         s->iy[0] |= (value << 8) & 0x300;
 666         break;
 667     case 0x74:  /* Input Window X End Position 0 */
 668         s->ix[1] &= 0x300;
 669         s->ix[1] |= (value << 0) & 0x0ff;
 670         break;
 671     case 0x76:  /* Input Window X End Position 1 */
 672         s->ix[1] &= 0x0ff;
 673         s->ix[1] |= (value << 8) & 0x300;
 674         break;
 675     case 0x78:  /* Input Window Y End Position 0 */
 676         s->iy[1] &= 0x300;
 677         s->iy[1] |= (value << 0) & 0x0ff;
 678         break;
 679     case 0x7a:  /* Input Window Y End Position 1 */
 680         s->iy[1] &= 0x0ff;
 681         s->iy[1] |= (value << 8) & 0x300;
 682         break;
 683     case 0x7c:  /* Output Window X Start Position 0 */
 684         s->ox[0] &= 0x300;
 685         s->ox[0] |= (value << 0) & 0x0ff;
 686         break;
 687     case 0x7e:  /* Output Window X Start Position 1 */
 688         s->ox[0] &= 0x0ff;
 689         s->ox[0] |= (value << 8) & 0x300;
 690         break;
 691     case 0x80:  /* Output Window Y Start Position 0 */
 692         s->oy[0] &= 0x300;
 693         s->oy[0] |= (value << 0) & 0x0ff;
 694         break;
 695     case 0x82:  /* Output Window Y Start Position 1 */
 696         s->oy[0] &= 0x0ff;
 697         s->oy[0] |= (value << 8) & 0x300;
 698         break;
 699     case 0x84:  /* Output Window X End Position 0 */
 700         s->ox[1] &= 0x300;
 701         s->ox[1] |= (value << 0) & 0x0ff;
 702         break;
 703     case 0x86:  /* Output Window X End Position 1 */
 704         s->ox[1] &= 0x0ff;
 705         s->ox[1] |= (value << 8) & 0x300;
 706         break;
 707     case 0x88:  /* Output Window Y End Position 0 */
 708         s->oy[1] &= 0x300;
 709         s->oy[1] |= (value << 0) & 0x0ff;
 710         break;
 711     case 0x8a:  /* Output Window Y End Position 1 */
 712         s->oy[1] &= 0x0ff;
 713         s->oy[1] |= (value << 8) & 0x300;
 714         break;
 715
 716     case 0x8c:  /* Input Data Format */
 717         s->iformat = value & 0xf;
 718         s->bpp = blizzard_iformat_bpp[s->iformat];
 719         if (!s->bpp)
 720             fprintf(stderr, "%s: Illegal or unsupported input format %x\n",
 721                             __func__, s->iformat);
 722         break;
 723     case 0x8e:  /* Data Source Select */
 724         s->source = value & 7;
 725         /* Currently all windows will be "destructive overlays".  */
 726         if ((!(s->effect & (1 << 3)) && (s->ix[0] != s->ox[0] ||
 727                                         s->iy[0] != s->oy[0] ||
 728                                         s->ix[1] != s->ox[1] ||
 729                                         s->iy[1] != s->oy[1])) ||
 730                         !((s->ix[1] - s->ix[0]) & (s->iy[1] - s->iy[0]) &
 731                           (s->ox[1] - s->ox[0]) & (s->oy[1] - s->oy[0]) & 1))
 732             fprintf(stderr, "%s: Illegal input/output window positions\n",
 733                             __func__);
 734
 735         blizzard_transfer_setup(s);
 736         break;
 737
 738     case 0x90:  /* Display Memory Data Port */
 739         if (!s->data.len && !blizzard_transfer_setup(s))
 740             break;
 741
 742         *s->data.ptr ++ = value;
 743         if (-- s->data.len == 0)
 744             blizzard_window(s);
 745         break;
 746
 747     case 0xa8:  /* Border Color 0 */
 748         s->border_r = value;
 749         break;
 750     case 0xaa:  /* Border Color 1 */
 751         s->border_g = value;
 752         break;
 753     case 0xac:  /* Border Color 2 */
 754         s->border_b = value;
 755         break;
 756
 757     case 0xb4:  /* Gamma Correction Enable */
 758         s->gamma_config = value & 0x87;
 759         break;
 760     case 0xb6:  /* Gamma Correction Table Index */
 761         s->gamma_idx = value;
 762         break;
 763     case 0xb8:  /* Gamma Correction Table Data */
 764         s->gamma_lut[s->gamma_idx ++] = value;
 765         break;
 766
 767     case 0xba:  /* 3x3 Matrix Enable */
 768         s->matrix_ena = value & 1;
 769         break;
 770     case 0xbc ... 0xde: /* Coefficient Registers */
 771         s->matrix_coeff[(reg - 0xbc) >> 1] = value & ((reg & 2) ? 0x80 : 0xff);
 772         break;
 773     case 0xe0:  /* 3x3 Matrix Red Offset */
 774         s->matrix_r = value;
 775         break;
 776     case 0xe2:  /* 3x3 Matrix Green Offset */
 777         s->matrix_g = value;
 778         break;
 779     case 0xe4:  /* 3x3 Matrix Blue Offset */
 780         s->matrix_b = value;
 781         break;
 782
 783     case 0xe6:  /* Power-save */
 784         s->pm = value & 0x83;
 785         if (value & s->mode & 1)
 786             fprintf(stderr, "%s: The display must be disabled before entering "
 787                             "Standby Mode\n", __func__);
 788         break;
 789     case 0xe8:  /* Non-display Period Control / Status */
 790         s->status = value & 0x1b;
 791         break;
 792     case 0xea:  /* RGB Interface Control */
 793         s->rgbgpio_dir = value & 0x8f;
 794         break;
 795     case 0xec:  /* RGB Interface Status */
 796         s->rgbgpio = value & 0xcf;
 797         break;
 798     case 0xee:  /* General-purpose IO Pins Configuration */
 799         s->gpio_dir = value;
 800         break;
 801     case 0xf0:  /* General-purpose IO Pins Status / Control */
 802         s->gpio = value;
 803         break;
 804     case 0xf2:  /* GPIO Positive Edge Interrupt Trigger */
 805         s->gpio_edge[0] = value;
 806         break;
 807     case 0xf4:  /* GPIO Negative Edge Interrupt Trigger */
 808         s->gpio_edge[1] = value;
 809         break;
 810     case 0xf6:  /* GPIO Interrupt Status */
 811         s->gpio_irq &= value;
 812         break;
 813     case 0xf8:  /* GPIO Pull-down Control */
 814         s->gpio_pdown = value;
 815         break;
 816
 817     default:
 818         fprintf(stderr, "%s: unknown register %02x\n", __func__, reg);
 819         break;
 820     }
 821 }
 822
 823 uint16_t s1d13745_read(void *opaque, int dc)
 824 {
 825     BlizzardState *s = (BlizzardState *) opaque;
 826     uint16_t value = blizzard_reg_read(s, s->reg);
 827
 828     if (s->swallow -- > 0)
 829         return 0;
 830     if (dc)
 831         s->reg ++;
 832
 833     return value;
 834 }
 835
 836 void s1d13745_write(void *opaque, int dc, uint16_t value)
 837 {
 838     BlizzardState *s = (BlizzardState *) opaque;
 839
 840     if (s->swallow -- > 0)
 841         return;
 842     if (dc) {
 843         blizzard_reg_write(s, s->reg, value);
 844
 845         if (s->reg != 0x90 && s->reg != 0x5a && s->reg != 0xb8)
 846             s->reg += 2;
 847     } else
 848         s->reg = value & 0xff;
 849 }
 850
 851 void s1d13745_write_block(void *opaque, int dc,
 852                 void *buf, size_t len, int pitch)
 853 {
 854     BlizzardState *s = (BlizzardState *) opaque;
 855
 856     while (len > 0) {
 857         if (s->reg == 0x90 && dc &&
 858                         (s->data.len || blizzard_transfer_setup(s)) &&
 859                         len >= (s->data.len << 1)) {
 860             len -= s->data.len << 1;
 861             s->data.len = 0;
 862             s->data.data = buf;
 863             if (pitch)
 864                 s->data.pitch = pitch;
 865             blizzard_window(s);
 866             s->data.data = s->data.buf;
 867             continue;
 868         }
 869
 870         s1d13745_write(opaque, dc, *(uint16_t *) buf);
 871         len -= 2;
 872         buf += 2;
 873     }
 874 }
 875
 876 static void blizzard_update_display(void *opaque)
 877 {
 878     BlizzardState *s = (BlizzardState *) opaque;
 879     DisplaySurface *surface = qemu_console_surface(s->con);
 880     int y, bypp, bypl, bwidth;
 881     uint8_t *src, *dst;
 882
 883     if (!s->enable)
 884         return;
 885
 886     if (s->x != surface_width(surface) || s->y != surface_height(surface)) {
 887         s->invalidate = 1;
 888         qemu_console_resize(s->con, s->x, s->y);
 889         surface = qemu_console_surface(s->con);
 890     }
 891
 892     if (s->invalidate) {
 893         s->invalidate = 0;
 894
 895         if (s->blank) {
 896             bypp = surface_bytes_per_pixel(surface);
 897             memset(surface_data(surface), 0, bypp * s->x * s->y);
 898             return;
 899         }
 900
 901         s->mx[0] = 0;
 902         s->mx[1] = s->x;
 903         s->my[0] = 0;
 904         s->my[1] = s->y;
 905     }
 906
 907     if (s->mx[1] <= s->mx[0])
 908         return;
 909
 910     bypp = surface_bytes_per_pixel(surface);
 911     bypl = bypp * s->x;
 912     bwidth = bypp * (s->mx[1] - s->mx[0]);
 913     y = s->my[0];
 914     src = s->fb + bypl * y + bypp * s->mx[0];
 915     dst = surface_data(surface) + bypl * y + bypp * s->mx[0];
 916     for (; y < s->my[1]; y ++, src += bypl, dst += bypl)
 917         memcpy(dst, src, bwidth);
 918
 919     dpy_gfx_update(s->con, s->mx[0], s->my[0],
 920                    s->mx[1] - s->mx[0], y - s->my[0]);
 921
 922     s->mx[0] = s->x;
 923     s->mx[1] = 0;
 924     s->my[0] = s->y;
 925     s->my[1] = 0;
 926 }
 927
 928 static void blizzard_draw_line16_32(uint32_t *dest,
 929                                     const uint16_t *src, unsigned int width)
 930 {
 931     uint16_t data;
 932     unsigned int r, g, b;
 933     const uint16_t *end = (const void *) src + width;
 934     while (src < end) {
 935         data = *src ++;
 936         b = extract16(data, 0, 5) << 3;
 937         g = extract16(data, 5, 6) << 2;
 938         r = extract16(data, 11, 5) << 3;
 939         *dest++ = rgb_to_pixel32(r, g, b);
 940     }
 941 }
 942
 943 static void blizzard_draw_line24mode1_32(uint32_t *dest,
 944                                          const uint8_t *src, unsigned int width)
 945 {
 946     /* TODO: check if SDL 24-bit planes are not in the same format and
 947      * if so, use memcpy */
 948     unsigned int r[2], g[2], b[2];
 949     const uint8_t *end = src + width;
 950     while (src < end) {
 951         g[0] = *src ++;
 952         r[0] = *src ++;
 953         r[1] = *src ++;
 954         b[0] = *src ++;
 955         *dest++ = rgb_to_pixel32(r[0], g[0], b[0]);
 956         b[1] = *src ++;
 957         g[1] = *src ++;
 958         *dest++ = rgb_to_pixel32(r[1], g[1], b[1]);
 959     }
 960 }
 961
 962 static void blizzard_draw_line24mode2_32(uint32_t *dest,
 963                                          const uint8_t *src, unsigned int width)
 964 {
 965     unsigned int r, g, b;
 966     const uint8_t *end = src + width;
 967     while (src < end) {
 968         r = *src ++;
 969         src ++;
 970         b = *src ++;
 971         g = *src ++;
 972         *dest++ = rgb_to_pixel32(r, g, b);
 973     }
 974 }
 975
 976 /* No rotation */
 977 static blizzard_fn_t blizzard_draw_fn_32[0x10] = {
 978     NULL,
 979     /* RGB 5:6:5*/
 980     (blizzard_fn_t) blizzard_draw_line16_32,
 981     /* RGB 6:6:6 mode 1 */
 982     (blizzard_fn_t) blizzard_draw_line24mode1_32,
 983     /* RGB 8:8:8 mode 1 */
 984     (blizzard_fn_t) blizzard_draw_line24mode1_32,
 985     NULL, NULL,
 986     /* RGB 6:6:6 mode 2 */
 987     (blizzard_fn_t) blizzard_draw_line24mode2_32,
 988     /* RGB 8:8:8 mode 2 */
 989     (blizzard_fn_t) blizzard_draw_line24mode2_32,
 990     /* YUV 4:2:2 */
 991     NULL,
 992     /* YUV 4:2:0 */
 993     NULL,
 994     NULL, NULL, NULL, NULL, NULL, NULL,
 995 };
 996
 997 /* 90deg, 180deg and 270deg rotation */
 998 static blizzard_fn_t blizzard_draw_fn_r_32[0x10] = {
 999     /* TODO */
1000     [0 ... 0xf] = NULL,
1001 };
1002
1003 static const GraphicHwOps blizzard_ops = {
1004     .invalidate  = blizzard_invalidate_display,
1005     .gfx_update  = blizzard_update_display,
1006 };
1007
1008 void *s1d13745_init(qemu_irq gpio_int)
1009 {
1010     BlizzardState *s = g_malloc0(sizeof(*s));
1011     DisplaySurface *surface;
1012
1013     s->fb = g_malloc(0x180000);
1014
1015     s->con = graphic_console_init(NULL, 0, &blizzard_ops, s);
1016     surface = qemu_console_surface(s->con);
1017
1018     assert(surface_bits_per_pixel(surface) == 32);
1019
1020     s->line_fn_tab[0] = blizzard_draw_fn_32;
1021     s->line_fn_tab[1] = blizzard_draw_fn_r_32;
1022
1023     blizzard_reset(s);
1024
1025     return s;
1026 }