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, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include "qemu-common.h"
  23 #include "sysemu.h"
  24 #include "console.h"
  25 #include "devices.h"
  26 #include "vga_int.h"
  27 #include "pixel_ops.h"
  28
  29 typedef void (*blizzard_fn_t)(uint8_t *, const uint8_t *, unsigned int);
  30
  31 typedef struct {
  32     uint8_t reg;
  33     uint32_t addr;
  34     int swallow;
  35
  36     int pll;
  37     int pll_range;
  38     int pll_ctrl;
  39     uint8_t pll_mode;
  40     uint8_t clksel;
  41     int memenable;
  42     int memrefresh;
  43     uint8_t timing[3];
  44     int priority;
  45
  46     uint8_t lcd_config;
  47     int x;
  48     int y;
  49     int skipx;
  50     int skipy;
  51     uint8_t hndp;
  52     uint8_t vndp;
  53     uint8_t hsync;
  54     uint8_t vsync;
  55     uint8_t pclk;
  56     uint8_t u;
  57     uint8_t v;
  58     uint8_t yrc[2];
  59     int ix[2];
  60     int iy[2];
  61     int ox[2];
  62     int oy[2];
  63
  64     int enable;
  65     int blank;
  66     int bpp;
  67     int invalidate;
  68     int mx[2];
  69     int my[2];
  70     uint8_t mode;
  71     uint8_t effect;
  72     uint8_t iformat;
  73     uint8_t source;
  74     DisplayState *state;
  75     blizzard_fn_t *line_fn_tab[2];
  76     void *fb;
  77
  78     uint8_t hssi_config[3];
  79     uint8_t tv_config;
  80     uint8_t tv_timing[4];
  81     uint8_t vbi;
  82     uint8_t tv_x;
  83     uint8_t tv_y;
  84     uint8_t tv_test;
  85     uint8_t tv_filter_config;
  86     uint8_t tv_filter_idx;
  87     uint8_t tv_filter_coeff[0x20];
  88     uint8_t border_r;
  89     uint8_t border_g;
  90     uint8_t border_b;
  91     uint8_t gamma_config;
  92     uint8_t gamma_idx;
  93     uint8_t gamma_lut[0x100];
  94     uint8_t matrix_ena;
  95     uint8_t matrix_coeff[0x12];
  96     uint8_t matrix_r;
  97     uint8_t matrix_g;
  98     uint8_t matrix_b;
  99     uint8_t pm;
 100     uint8_t status;
 101     uint8_t rgbgpio_dir;
 102     uint8_t rgbgpio;
 103     uint8_t gpio_dir;
 104     uint8_t gpio;
 105     uint8_t gpio_edge[2];
 106     uint8_t gpio_irq;
 107     uint8_t gpio_pdown;
 108
 109     struct {
 110         int x;
 111         int y;
 112         int dx;
 113         int dy;
 114         int len;
 115         int buflen;
 116         void *buf;
 117         void *data;
 118         uint16_t *ptr;
 119         int angle;
 120         int pitch;
 121         blizzard_fn_t line_fn;
 122     } data;
 123 } BlizzardState;
 124
 125 /* Bytes(!) per pixel */
 126 static const int blizzard_iformat_bpp[0x10] = {
 127     0,
 128     2,  /* RGB 5:6:5*/
 129     3,  /* RGB 6:6:6 mode 1 */
 130     3,  /* RGB 8:8:8 mode 1 */
 131     0, 0,
 132     4,  /* RGB 6:6:6 mode 2 */
 133     4,  /* RGB 8:8:8 mode 2 */
 134     0,  /* YUV 4:2:2 */
 135     0,  /* YUV 4:2:0 */
 136     0, 0, 0, 0, 0, 0,
 137 };
 138
 139 static inline void blizzard_rgb2yuv(int r, int g, int b,
 140                 int *y, int *u, int *v)
 141 {
 142     *y = 0x10 + ((0x838 * r + 0x1022 * g + 0x322 * b) >> 13);
 143     *u = 0x80 + ((0xe0e * b - 0x04c1 * r - 0x94e * g) >> 13);
 144     *v = 0x80 + ((0xe0e * r - 0x0bc7 * g - 0x247 * b) >> 13);
 145 }
 146
 147 static void blizzard_window(BlizzardState *s)
 148 {
 149     uint8_t *src, *dst;
 150     int bypp[2];
 151     int bypl[3];
 152     int y;
 153     blizzard_fn_t fn = s->data.line_fn;
 154
 155     if (!fn)
 156         return;
 157     if (s->mx[0] > s->data.x)
 158         s->mx[0] = s->data.x;
 159     if (s->my[0] > s->data.y)
 160         s->my[0] = s->data.y;
 161     if (s->mx[1] < s->data.x + s->data.dx)
 162         s->mx[1] = s->data.x + s->data.dx;
 163     if (s->my[1] < s->data.y + s->data.dy)
 164         s->my[1] = s->data.y + s->data.dy;
 165
 166     bypp[0] = s->bpp;
 167     bypp[1] = (ds_get_bits_per_pixel(s->state) + 7) >> 3;
 168     bypl[0] = bypp[0] * s->data.pitch;
 169     bypl[1] = bypp[1] * s->x;
 170     bypl[2] = bypp[0] * s->data.dx;
 171
 172     src = s->data.data;
 173     dst = s->fb + bypl[1] * s->data.y + bypp[1] * s->data.x;
 174     for (y = s->data.dy; y > 0; y --, src += bypl[0], dst += bypl[1])
 175         fn(dst, src, bypl[2]);
 176 }
 177
 178 static int blizzard_transfer_setup(BlizzardState *s)
 179 {
 180     if (s->source > 3 || !s->bpp ||
 181                     s->ix[1] < s->ix[0] || s->iy[1] < s->iy[0])
 182         return 0;
 183
 184     s->data.angle = s->effect & 3;
 185     s->data.line_fn = s->line_fn_tab[!!s->data.angle][s->iformat];
 186     s->data.x = s->ix[0];
 187     s->data.y = s->iy[0];
 188     s->data.dx = s->ix[1] - s->ix[0] + 1;
 189     s->data.dy = s->iy[1] - s->iy[0] + 1;
 190     s->data.len = s->bpp * s->data.dx * s->data.dy;
 191     s->data.pitch = s->data.dx;
 192     if (s->data.len > s->data.buflen) {
 193         s->data.buf = qemu_realloc(s->data.buf, s->data.len);
 194         s->data.buflen = s->data.len;
 195     }
 196     s->data.ptr = s->data.buf;
 197     s->data.data = s->data.buf;
 198     s->data.len /= 2;
 199     return 1;
 200 }
 201
 202 static void blizzard_reset(BlizzardState *s)
 203 {
 204     s->reg = 0;
 205     s->swallow = 0;
 206
 207     s->pll = 9;
 208     s->pll_range = 1;
 209     s->pll_ctrl = 0x14;
 210     s->pll_mode = 0x32;
 211     s->clksel = 0x00;
 212     s->memenable = 0;
 213     s->memrefresh = 0x25c;
 214     s->timing[0] = 0x3f;
 215     s->timing[1] = 0x13;
 216     s->timing[2] = 0x21;
 217     s->priority = 0;
 218
 219     s->lcd_config = 0x74;
 220     s->x = 8;
 221     s->y = 1;
 222     s->skipx = 0;
 223     s->skipy = 0;
 224     s->hndp = 3;
 225     s->vndp = 2;
 226     s->hsync = 1;
 227     s->vsync = 1;
 228     s->pclk = 0x80;
 229
 230     s->ix[0] = 0;
 231     s->ix[1] = 0;
 232     s->iy[0] = 0;
 233     s->iy[1] = 0;
 234     s->ox[0] = 0;
 235     s->ox[1] = 0;
 236     s->oy[0] = 0;
 237     s->oy[1] = 0;
 238
 239     s->yrc[0] = 0x00;
 240     s->yrc[1] = 0x30;
 241     s->u = 0;
 242     s->v = 0;
 243
 244     s->iformat = 3;
 245     s->source = 0;
 246     s->bpp = blizzard_iformat_bpp[s->iformat];
 247
 248     s->hssi_config[0] = 0x00;
 249     s->hssi_config[1] = 0x00;
 250     s->hssi_config[2] = 0x01;
 251     s->tv_config = 0x00;
 252     s->tv_timing[0] = 0x00;
 253     s->tv_timing[1] = 0x00;
 254     s->tv_timing[2] = 0x00;
 255     s->tv_timing[3] = 0x00;
 256     s->vbi = 0x10;
 257     s->tv_x = 0x14;
 258     s->tv_y = 0x03;
 259     s->tv_test = 0x00;
 260     s->tv_filter_config = 0x80;
 261     s->tv_filter_idx = 0x00;
 262     s->border_r = 0x10;
 263     s->border_g = 0x80;
 264     s->border_b = 0x80;
 265     s->gamma_config = 0x00;
 266     s->gamma_idx = 0x00;
 267     s->matrix_ena = 0x00;
 268     memset(&s->matrix_coeff, 0, sizeof(s->matrix_coeff));
 269     s->matrix_r = 0x00;
 270     s->matrix_g = 0x00;
 271     s->matrix_b = 0x00;
 272     s->pm = 0x02;
 273     s->status = 0x00;
 274     s->rgbgpio_dir = 0x00;
 275     s->gpio_dir = 0x00;
 276     s->gpio_edge[0] = 0x00;
 277     s->gpio_edge[1] = 0x00;
 278     s->gpio_irq = 0x00;
 279     s->gpio_pdown = 0xff;
 280 }
 281
 282 static inline void blizzard_invalidate_display(void *opaque) {
 283     BlizzardState *s = (BlizzardState *) opaque;
 284
 285     s->invalidate = 1;
 286 }
 287
 288 static uint16_t blizzard_reg_read(void *opaque, uint8_t reg)
 289 {
 290     BlizzardState *s = (BlizzardState *) opaque;
 291
 292     switch (reg) {
 293     case 0x00:  /* Revision Code */
 294         return 0xa5;
 295
 296     case 0x02:  /* Configuration Readback */
 297         return 0x83;    /* Macrovision OK, CNF[2:0] = 3 */
 298
 299     case 0x04:  /* PLL M-Divider */
 300         return (s->pll - 1) | (1 << 7);
 301     case 0x06:  /* PLL Lock Range Control */
 302         return s->pll_range;
 303     case 0x08:  /* PLL Lock Synthesis Control 0 */
 304         return s->pll_ctrl & 0xff;
 305     case 0x0a:  /* PLL Lock Synthesis Control 1 */
 306         return s->pll_ctrl >> 8;
 307     case 0x0c:  /* PLL Mode Control 0 */
 308         return s->pll_mode;
 309
 310     case 0x0e:  /* Clock-Source Select */
 311         return s->clksel;
 312
 313     case 0x10:  /* Memory Controller Activate */
 314     case 0x14:  /* Memory Controller Bank 0 Status Flag */
 315         return s->memenable;
 316
 317     case 0x18:  /* Auto-Refresh Interval Setting 0 */
 318         return s->memrefresh & 0xff;
 319     case 0x1a:  /* Auto-Refresh Interval Setting 1 */
 320         return s->memrefresh >> 8;
 321
 322     case 0x1c:  /* Power-On Sequence Timing Control */
 323         return s->timing[0];
 324     case 0x1e:  /* Timing Control 0 */
 325         return s->timing[1];
 326     case 0x20:  /* Timing Control 1 */
 327         return s->timing[2];
 328
 329     case 0x24:  /* Arbitration Priority Control */
 330         return s->priority;
 331
 332     case 0x28:  /* LCD Panel Configuration */
 333         return s->lcd_config;
 334
 335     case 0x2a:  /* LCD Horizontal Display Width */
 336         return s->x >> 3;
 337     case 0x2c:  /* LCD Horizontal Non-display Period */
 338         return s->hndp;
 339     case 0x2e:  /* LCD Vertical Display Height 0 */
 340         return s->y & 0xff;
 341     case 0x30:  /* LCD Vertical Display Height 1 */
 342         return s->y >> 8;
 343     case 0x32:  /* LCD Vertical Non-display Period */
 344         return s->vndp;
 345     case 0x34:  /* LCD HS Pulse-width */
 346         return s->hsync;
 347     case 0x36:  /* LCd HS Pulse Start Position */
 348         return s->skipx >> 3;
 349     case 0x38:  /* LCD VS Pulse-width */
 350         return s->vsync;
 351     case 0x3a:  /* LCD VS Pulse Start Position */
 352         return s->skipy;
 353
 354     case 0x3c:  /* PCLK Polarity */
 355         return s->pclk;
 356
 357     case 0x3e:  /* High-speed Serial Interface Tx Configuration Port 0 */
 358         return s->hssi_config[0];
 359     case 0x40:  /* High-speed Serial Interface Tx Configuration Port 1 */
 360         return s->hssi_config[1];
 361     case 0x42:  /* High-speed Serial Interface Tx Mode */
 362         return s->hssi_config[2];
 363     case 0x44:  /* TV Display Configuration */
 364         return s->tv_config;
 365     case 0x46 ... 0x4c: /* TV Vertical Blanking Interval Data bits */
 366         return s->tv_timing[(reg - 0x46) >> 1];
 367     case 0x4e:  /* VBI: Closed Caption / XDS Control / Status */
 368         return s->vbi;
 369     case 0x50:  /* TV Horizontal Start Position */
 370         return s->tv_x;
 371     case 0x52:  /* TV Vertical Start Position */
 372         return s->tv_y;
 373     case 0x54:  /* TV Test Pattern Setting */
 374         return s->tv_test;
 375     case 0x56:  /* TV Filter Setting */
 376         return s->tv_filter_config;
 377     case 0x58:  /* TV Filter Coefficient Index */
 378         return s->tv_filter_idx;
 379     case 0x5a:  /* TV Filter Coefficient Data */
 380         if (s->tv_filter_idx < 0x20)
 381             return s->tv_filter_coeff[s->tv_filter_idx ++];
 382         return 0;
 383
 384     case 0x60:  /* Input YUV/RGB Translate Mode 0 */
 385         return s->yrc[0];
 386     case 0x62:  /* Input YUV/RGB Translate Mode 1 */
 387         return s->yrc[1];
 388     case 0x64:  /* U Data Fix */
 389         return s->u;
 390     case 0x66:  /* V Data Fix */
 391         return s->v;
 392
 393     case 0x68:  /* Display Mode */
 394         return s->mode;
 395
 396     case 0x6a:  /* Special Effects */
 397         return s->effect;
 398
 399     case 0x6c:  /* Input Window X Start Position 0 */
 400         return s->ix[0] & 0xff;
 401     case 0x6e:  /* Input Window X Start Position 1 */
 402         return s->ix[0] >> 3;
 403     case 0x70:  /* Input Window Y Start Position 0 */
 404         return s->ix[0] & 0xff;
 405     case 0x72:  /* Input Window Y Start Position 1 */
 406         return s->ix[0] >> 3;
 407     case 0x74:  /* Input Window X End Position 0 */
 408         return s->ix[1] & 0xff;
 409     case 0x76:  /* Input Window X End Position 1 */
 410         return s->ix[1] >> 3;
 411     case 0x78:  /* Input Window Y End Position 0 */
 412         return s->ix[1] & 0xff;
 413     case 0x7a:  /* Input Window Y End Position 1 */
 414         return s->ix[1] >> 3;
 415     case 0x7c:  /* Output Window X Start Position 0 */
 416         return s->ox[0] & 0xff;
 417     case 0x7e:  /* Output Window X Start Position 1 */
 418         return s->ox[0] >> 3;
 419     case 0x80:  /* Output Window Y Start Position 0 */
 420         return s->oy[0] & 0xff;
 421     case 0x82:  /* Output Window Y Start Position 1 */
 422         return s->oy[0] >> 3;
 423     case 0x84:  /* Output Window X End Position 0 */
 424         return s->ox[1] & 0xff;
 425     case 0x86:  /* Output Window X End Position 1 */
 426         return s->ox[1] >> 3;
 427     case 0x88:  /* Output Window Y End Position 0 */
 428         return s->oy[1] & 0xff;
 429     case 0x8a:  /* Output Window Y End Position 1 */
 430         return s->oy[1] >> 3;
 431
 432     case 0x8c:  /* Input Data Format */
 433         return s->iformat;
 434     case 0x8e:  /* Data Source Select */
 435         return s->source;
 436     case 0x90:  /* Display Memory Data Port */
 437         return 0;
 438
 439     case 0xa8:  /* Border Color 0 */
 440         return s->border_r;
 441     case 0xaa:  /* Border Color 1 */
 442         return s->border_g;
 443     case 0xac:  /* Border Color 2 */
 444         return s->border_b;
 445
 446     case 0xb4:  /* Gamma Correction Enable */
 447         return s->gamma_config;
 448     case 0xb6:  /* Gamma Correction Table Index */
 449         return s->gamma_idx;
 450     case 0xb8:  /* Gamma Correction Table Data */
 451         return s->gamma_lut[s->gamma_idx ++];
 452
 453     case 0xba:  /* 3x3 Matrix Enable */
 454         return s->matrix_ena;
 455     case 0xbc ... 0xde: /* Coefficient Registers */
 456         return s->matrix_coeff[(reg - 0xbc) >> 1];
 457     case 0xe0:  /* 3x3 Matrix Red Offset */
 458         return s->matrix_r;
 459     case 0xe2:  /* 3x3 Matrix Green Offset */
 460         return s->matrix_g;
 461     case 0xe4:  /* 3x3 Matrix Blue Offset */
 462         return s->matrix_b;
 463
 464     case 0xe6:  /* Power-save */
 465         return s->pm;
 466     case 0xe8:  /* Non-display Period Control / Status */
 467         return s->status | (1 << 5);
 468     case 0xea:  /* RGB Interface Control */
 469         return s->rgbgpio_dir;
 470     case 0xec:  /* RGB Interface Status */
 471         return s->rgbgpio;
 472     case 0xee:  /* General-purpose IO Pins Configuration */
 473         return s->gpio_dir;
 474     case 0xf0:  /* General-purpose IO Pins Status / Control */
 475         return s->gpio;
 476     case 0xf2:  /* GPIO Positive Edge Interrupt Trigger */
 477         return s->gpio_edge[0];
 478     case 0xf4:  /* GPIO Negative Edge Interrupt Trigger */
 479         return s->gpio_edge[1];
 480     case 0xf6:  /* GPIO Interrupt Status */
 481         return s->gpio_irq;
 482     case 0xf8:  /* GPIO Pull-down Control */
 483         return s->gpio_pdown;
 484
 485     default:
 486         fprintf(stderr, "%s: unknown register %02x\n", __FUNCTION__, reg);
 487         return 0;
 488     }
 489 }
 490
 491 static void blizzard_reg_write(void *opaque, uint8_t reg, uint16_t value)
 492 {
 493     BlizzardState *s = (BlizzardState *) opaque;
 494
 495     switch (reg) {
 496     case 0x04:  /* PLL M-Divider */
 497         s->pll = (value & 0x3f) + 1;
 498         break;
 499     case 0x06:  /* PLL Lock Range Control */
 500         s->pll_range = value & 3;
 501         break;
 502     case 0x08:  /* PLL Lock Synthesis Control 0 */
 503         s->pll_ctrl &= 0xf00;
 504         s->pll_ctrl |= (value << 0) & 0x0ff;
 505         break;
 506     case 0x0a:  /* PLL Lock Synthesis Control 1 */
 507         s->pll_ctrl &= 0x0ff;
 508         s->pll_ctrl |= (value << 8) & 0xf00;
 509         break;
 510     case 0x0c:  /* PLL Mode Control 0 */
 511         s->pll_mode = value & 0x77;
 512         if ((value & 3) == 0 || (value & 3) == 3)
 513             fprintf(stderr, "%s: wrong PLL Control bits (%i)\n",
 514                     __FUNCTION__, value & 3);
 515         break;
 516
 517     case 0x0e:  /* Clock-Source Select */
 518         s->clksel = value & 0xff;
 519         break;
 520
 521     case 0x10:  /* Memory Controller Activate */
 522         s->memenable = value & 1;
 523         break;
 524     case 0x14:  /* Memory Controller Bank 0 Status Flag */
 525         break;
 526
 527     case 0x18:  /* Auto-Refresh Interval Setting 0 */
 528         s->memrefresh &= 0xf00;
 529         s->memrefresh |= (value << 0) & 0x0ff;
 530         break;
 531     case 0x1a:  /* Auto-Refresh Interval Setting 1 */
 532         s->memrefresh &= 0x0ff;
 533         s->memrefresh |= (value << 8) & 0xf00;
 534         break;
 535
 536     case 0x1c:  /* Power-On Sequence Timing Control */
 537         s->timing[0] = value & 0x7f;
 538         break;
 539     case 0x1e:  /* Timing Control 0 */
 540         s->timing[1] = value & 0x17;
 541         break;
 542     case 0x20:  /* Timing Control 1 */
 543         s->timing[2] = value & 0x35;
 544         break;
 545
 546     case 0x24:  /* Arbitration Priority Control */
 547         s->priority = value & 1;
 548         break;
 549
 550     case 0x28:  /* LCD Panel Configuration */
 551         s->lcd_config = value & 0xff;
 552         if (value & (1 << 7))
 553             fprintf(stderr, "%s: data swap not supported!\n", __FUNCTION__);
 554         break;
 555
 556     case 0x2a:  /* LCD Horizontal Display Width */
 557         s->x = value << 3;
 558         break;
 559     case 0x2c:  /* LCD Horizontal Non-display Period */
 560         s->hndp = value & 0xff;
 561         break;
 562     case 0x2e:  /* LCD Vertical Display Height 0 */
 563         s->y &= 0x300;
 564         s->y |= (value << 0) & 0x0ff;
 565         break;
 566     case 0x30:  /* LCD Vertical Display Height 1 */
 567         s->y &= 0x0ff;
 568         s->y |= (value << 8) & 0x300;
 569         break;
 570     case 0x32:  /* LCD Vertical Non-display Period */
 571         s->vndp = value & 0xff;
 572         break;
 573     case 0x34:  /* LCD HS Pulse-width */
 574         s->hsync = value & 0xff;
 575         break;
 576     case 0x36:  /* LCD HS Pulse Start Position */
 577         s->skipx = value & 0xff;
 578         break;
 579     case 0x38:  /* LCD VS Pulse-width */
 580         s->vsync = value & 0xbf;
 581         break;
 582     case 0x3a:  /* LCD VS Pulse Start Position */
 583         s->skipy = value & 0xff;
 584         break;
 585
 586     case 0x3c:  /* PCLK Polarity */
 587         s->pclk = value & 0x82;
 588         /* Affects calculation of s->hndp, s->hsync and s->skipx.  */
 589         break;
 590
 591     case 0x3e:  /* High-speed Serial Interface Tx Configuration Port 0 */
 592         s->hssi_config[0] = value;
 593         break;
 594     case 0x40:  /* High-speed Serial Interface Tx Configuration Port 1 */
 595         s->hssi_config[1] = value;
 596         if (((value >> 4) & 3) == 3)
 597             fprintf(stderr, "%s: Illegal active-data-links value\n",
 598                             __FUNCTION__);
 599         break;
 600     case 0x42:  /* High-speed Serial Interface Tx Mode */
 601         s->hssi_config[2] = value & 0xbd;
 602         break;
 603
 604     case 0x44:  /* TV Display Configuration */
 605         s->tv_config = value & 0xfe;
 606         break;
 607     case 0x46 ... 0x4c: /* TV Vertical Blanking Interval Data bits 0 */
 608         s->tv_timing[(reg - 0x46) >> 1] = value;
 609         break;
 610     case 0x4e:  /* VBI: Closed Caption / XDS Control / Status */
 611         s->vbi = value;
 612         break;
 613     case 0x50:  /* TV Horizontal Start Position */
 614         s->tv_x = value;
 615         break;
 616     case 0x52:  /* TV Vertical Start Position */
 617         s->tv_y = value & 0x7f;
 618         break;
 619     case 0x54:  /* TV Test Pattern Setting */
 620         s->tv_test = value;
 621         break;
 622     case 0x56:  /* TV Filter Setting */
 623         s->tv_filter_config = value & 0xbf;
 624         break;
 625     case 0x58:  /* TV Filter Coefficient Index */
 626         s->tv_filter_idx = value & 0x1f;
 627         break;
 628     case 0x5a:  /* TV Filter Coefficient Data */
 629         if (s->tv_filter_idx < 0x20)
 630             s->tv_filter_coeff[s->tv_filter_idx ++] = value;
 631         break;
 632
 633     case 0x60:  /* Input YUV/RGB Translate Mode 0 */
 634         s->yrc[0] = value & 0xb0;
 635         break;
 636     case 0x62:  /* Input YUV/RGB Translate Mode 1 */
 637         s->yrc[1] = value & 0x30;
 638         break;
 639     case 0x64:  /* U Data Fix */
 640         s->u = value & 0xff;
 641         break;
 642     case 0x66:  /* V Data Fix */
 643         s->v = value & 0xff;
 644         break;
 645
 646     case 0x68:  /* Display Mode */
 647         if ((s->mode ^ value) & 3)
 648             s->invalidate = 1;
 649         s->mode = value & 0xb7;
 650         s->enable = value & 1;
 651         s->blank = (value >> 1) & 1;
 652         if (value & (1 << 4))
 653             fprintf(stderr, "%s: Macrovision enable attempt!\n", __FUNCTION__);
 654         break;
 655
 656     case 0x6a:  /* Special Effects */
 657         s->effect = value & 0xfb;
 658         break;
 659
 660     case 0x6c:  /* Input Window X Start Position 0 */
 661         s->ix[0] &= 0x300;
 662         s->ix[0] |= (value << 0) & 0x0ff;
 663         break;
 664     case 0x6e:  /* Input Window X Start Position 1 */
 665         s->ix[0] &= 0x0ff;
 666         s->ix[0] |= (value << 8) & 0x300;
 667         break;
 668     case 0x70:  /* Input Window Y Start Position 0 */
 669         s->iy[0] &= 0x300;
 670         s->iy[0] |= (value << 0) & 0x0ff;
 671         break;
 672     case 0x72:  /* Input Window Y Start Position 1 */
 673         s->iy[0] &= 0x0ff;
 674         s->iy[0] |= (value << 8) & 0x300;
 675         break;
 676     case 0x74:  /* Input Window X End Position 0 */
 677         s->ix[1] &= 0x300;
 678         s->ix[1] |= (value << 0) & 0x0ff;
 679         break;
 680     case 0x76:  /* Input Window X End Position 1 */
 681         s->ix[1] &= 0x0ff;
 682         s->ix[1] |= (value << 8) & 0x300;
 683         break;
 684     case 0x78:  /* Input Window Y End Position 0 */
 685         s->iy[1] &= 0x300;
 686         s->iy[1] |= (value << 0) & 0x0ff;
 687         break;
 688     case 0x7a:  /* Input Window Y End Position 1 */
 689         s->iy[1] &= 0x0ff;
 690         s->iy[1] |= (value << 8) & 0x300;
 691         break;
 692     case 0x7c:  /* Output Window X Start Position 0 */
 693         s->ox[0] &= 0x300;
 694         s->ox[0] |= (value << 0) & 0x0ff;
 695         break;
 696     case 0x7e:  /* Output Window X Start Position 1 */
 697         s->ox[0] &= 0x0ff;
 698         s->ox[0] |= (value << 8) & 0x300;
 699         break;
 700     case 0x80:  /* Output Window Y Start Position 0 */
 701         s->oy[0] &= 0x300;
 702         s->oy[0] |= (value << 0) & 0x0ff;
 703         break;
 704     case 0x82:  /* Output Window Y Start Position 1 */
 705         s->oy[0] &= 0x0ff;
 706         s->oy[0] |= (value << 8) & 0x300;
 707         break;
 708     case 0x84:  /* Output Window X End Position 0 */
 709         s->ox[1] &= 0x300;
 710         s->ox[1] |= (value << 0) & 0x0ff;
 711         break;
 712     case 0x86:  /* Output Window X End Position 1 */
 713         s->ox[1] &= 0x0ff;
 714         s->ox[1] |= (value << 8) & 0x300;
 715         break;
 716     case 0x88:  /* Output Window Y End Position 0 */
 717         s->oy[1] &= 0x300;
 718         s->oy[1] |= (value << 0) & 0x0ff;
 719         break;
 720     case 0x8a:  /* Output Window Y End Position 1 */
 721         s->oy[1] &= 0x0ff;
 722         s->oy[1] |= (value << 8) & 0x300;
 723         break;
 724
 725     case 0x8c:  /* Input Data Format */
 726         s->iformat = value & 0xf;
 727         s->bpp = blizzard_iformat_bpp[s->iformat];
 728         if (!s->bpp)
 729             fprintf(stderr, "%s: Illegal or unsupported input format %x\n",
 730                             __FUNCTION__, s->iformat);
 731         break;
 732     case 0x8e:  /* Data Source Select */
 733         s->source = value & 7;
 734         /* Currently all windows will be "destructive overlays".  */
 735         if ((!(s->effect & (1 << 3)) && (s->ix[0] != s->ox[0] ||
 736                                         s->iy[0] != s->oy[0] ||
 737                                         s->ix[1] != s->ox[1] ||
 738                                         s->iy[1] != s->oy[1])) ||
 739                         !((s->ix[1] - s->ix[0]) & (s->iy[1] - s->iy[0]) &
 740                           (s->ox[1] - s->ox[0]) & (s->oy[1] - s->oy[0]) & 1))
 741             fprintf(stderr, "%s: Illegal input/output window positions\n",
 742                             __FUNCTION__);
 743
 744         blizzard_transfer_setup(s);
 745         break;
 746
 747     case 0x90:  /* Display Memory Data Port */
 748         if (!s->data.len && !blizzard_transfer_setup(s))
 749             break;
 750
 751         *s->data.ptr ++ = value;
 752         if (-- s->data.len == 0)
 753             blizzard_window(s);
 754         break;
 755
 756     case 0xa8:  /* Border Color 0 */
 757         s->border_r = value;
 758         break;
 759     case 0xaa:  /* Border Color 1 */
 760         s->border_g = value;
 761         break;
 762     case 0xac:  /* Border Color 2 */
 763         s->border_b = value;
 764         break;
 765
 766     case 0xb4:  /* Gamma Correction Enable */
 767         s->gamma_config = value & 0x87;
 768         break;
 769     case 0xb6:  /* Gamma Correction Table Index */
 770         s->gamma_idx = value;
 771         break;
 772     case 0xb8:  /* Gamma Correction Table Data */
 773         s->gamma_lut[s->gamma_idx ++] = value;
 774         break;
 775
 776     case 0xba:  /* 3x3 Matrix Enable */
 777         s->matrix_ena = value & 1;
 778         break;
 779     case 0xbc ... 0xde: /* Coefficient Registers */
 780         s->matrix_coeff[(reg - 0xbc) >> 1] = value & ((reg & 2) ? 0x80 : 0xff);
 781         break;
 782     case 0xe0:  /* 3x3 Matrix Red Offset */
 783         s->matrix_r = value;
 784         break;
 785     case 0xe2:  /* 3x3 Matrix Green Offset */
 786         s->matrix_g = value;
 787         break;
 788     case 0xe4:  /* 3x3 Matrix Blue Offset */
 789         s->matrix_b = value;
 790         break;
 791
 792     case 0xe6:  /* Power-save */
 793         s->pm = value & 0x83;
 794         if (value & s->mode & 1)
 795             fprintf(stderr, "%s: The display must be disabled before entering "
 796                             "Standby Mode\n", __FUNCTION__);
 797         break;
 798     case 0xe8:  /* Non-display Period Control / Status */
 799         s->status = value & 0x1b;
 800         break;
 801     case 0xea:  /* RGB Interface Control */
 802         s->rgbgpio_dir = value & 0x8f;
 803         break;
 804     case 0xec:  /* RGB Interface Status */
 805         s->rgbgpio = value & 0xcf;
 806         break;
 807     case 0xee:  /* General-purpose IO Pins Configuration */
 808         s->gpio_dir = value;
 809         break;
 810     case 0xf0:  /* General-purpose IO Pins Status / Control */
 811         s->gpio = value;
 812         break;
 813     case 0xf2:  /* GPIO Positive Edge Interrupt Trigger */
 814         s->gpio_edge[0] = value;
 815         break;
 816     case 0xf4:  /* GPIO Negative Edge Interrupt Trigger */
 817         s->gpio_edge[1] = value;
 818         break;
 819     case 0xf6:  /* GPIO Interrupt Status */
 820         s->gpio_irq &= value;
 821         break;
 822     case 0xf8:  /* GPIO Pull-down Control */
 823         s->gpio_pdown = value;
 824         break;
 825
 826     default:
 827         fprintf(stderr, "%s: unknown register %02x\n", __FUNCTION__, reg);
 828         break;
 829     }
 830 }
 831
 832 uint16_t s1d13745_read(void *opaque, int dc)
 833 {
 834     BlizzardState *s = (BlizzardState *) opaque;
 835     uint16_t value = blizzard_reg_read(s, s->reg);
 836
 837     if (s->swallow -- > 0)
 838         return 0;
 839     if (dc)
 840         s->reg ++;
 841
 842     return value;
 843 }
 844
 845 void s1d13745_write(void *opaque, int dc, uint16_t value)
 846 {
 847     BlizzardState *s = (BlizzardState *) opaque;
 848
 849     if (s->swallow -- > 0)
 850         return;
 851     if (dc) {
 852         blizzard_reg_write(s, s->reg, value);
 853
 854         if (s->reg != 0x90 && s->reg != 0x5a && s->reg != 0xb8)
 855             s->reg += 2;
 856     } else
 857         s->reg = value & 0xff;
 858 }
 859
 860 void s1d13745_write_block(void *opaque, int dc,
 861                 void *buf, size_t len, int pitch)
 862 {
 863     BlizzardState *s = (BlizzardState *) opaque;
 864
 865     while (len > 0) {
 866         if (s->reg == 0x90 && dc &&
 867                         (s->data.len || blizzard_transfer_setup(s)) &&
 868                         len >= (s->data.len << 1)) {
 869             len -= s->data.len << 1;
 870             s->data.len = 0;
 871             s->data.data = buf;
 872             if (pitch)
 873                 s->data.pitch = pitch;
 874             blizzard_window(s);
 875             s->data.data = s->data.buf;
 876             continue;
 877         }
 878
 879         s1d13745_write(opaque, dc, *(uint16_t *) buf);
 880         len -= 2;
 881         buf += 2;
 882     }
 883
 884     return;
 885 }
 886
 887 static void blizzard_update_display(void *opaque)
 888 {
 889     BlizzardState *s = (BlizzardState *) opaque;
 890     int y, bypp, bypl, bwidth;
 891     uint8_t *src, *dst;
 892
 893     if (!s->enable)
 894         return;
 895
 896     if (s->x != ds_get_width(s->state) || s->y != ds_get_height(s->state)) {
 897         s->invalidate = 1;
 898         qemu_console_resize(s->state, s->x, s->y);
 899     }
 900
 901     if (s->invalidate) {
 902         s->invalidate = 0;
 903
 904         if (s->blank) {
 905             bypp = (ds_get_bits_per_pixel(s->state) + 7) >> 3;
 906             memset(ds_get_data(s->state), 0, bypp * s->x * s->y);
 907             return;
 908         }
 909
 910         s->mx[0] = 0;
 911         s->mx[1] = s->x;
 912         s->my[0] = 0;
 913         s->my[1] = s->y;
 914     }
 915
 916     if (s->mx[1] <= s->mx[0])
 917         return;
 918
 919     bypp = (ds_get_bits_per_pixel(s->state) + 7) >> 3;
 920     bypl = bypp * s->x;
 921     bwidth = bypp * (s->mx[1] - s->mx[0]);
 922     y = s->my[0];
 923     src = s->fb + bypl * y + bypp * s->mx[0];
 924     dst = ds_get_data(s->state) + bypl * y + bypp * s->mx[0];
 925     for (; y < s->my[1]; y ++, src += bypl, dst += bypl)
 926         memcpy(dst, src, bwidth);
 927
 928     dpy_update(s->state, s->mx[0], s->my[0],
 929                     s->mx[1] - s->mx[0], y - s->my[0]);
 930
 931     s->mx[0] = s->x;
 932     s->mx[1] = 0;
 933     s->my[0] = s->y;
 934     s->my[1] = 0;
 935 }
 936
 937 static void blizzard_screen_dump(void *opaque, const char *filename) {
 938     BlizzardState *s = (BlizzardState *) opaque;
 939
 940     blizzard_update_display(opaque);
 941     if (s && ds_get_data(s->state))
 942         ppm_save(filename, s->state->surface);
 943 }
 944
 945 #define DEPTH 8
 946 #include "blizzard_template.h"
 947 #define DEPTH 15
 948 #include "blizzard_template.h"
 949 #define DEPTH 16
 950 #include "blizzard_template.h"
 951 #define DEPTH 24
 952 #include "blizzard_template.h"
 953 #define DEPTH 32
 954 #include "blizzard_template.h"
 955
 956 void *s1d13745_init(qemu_irq gpio_int)
 957 {
 958     BlizzardState *s = (BlizzardState *) qemu_mallocz(sizeof(*s));
 959
 960     s->fb = qemu_malloc(0x180000);
 961
 962     s->state = graphic_console_init(blizzard_update_display,
 963                                  blizzard_invalidate_display,
 964                                  blizzard_screen_dump, NULL, s);
 965
 966     switch (ds_get_bits_per_pixel(s->state)) {
 967     case 0:
 968         s->line_fn_tab[0] = s->line_fn_tab[1] =
 969                 qemu_mallocz(sizeof(blizzard_fn_t) * 0x10);
 970         break;
 971     case 8:
 972         s->line_fn_tab[0] = blizzard_draw_fn_8;
 973         s->line_fn_tab[1] = blizzard_draw_fn_r_8;
 974         break;
 975     case 15:
 976         s->line_fn_tab[0] = blizzard_draw_fn_15;
 977         s->line_fn_tab[1] = blizzard_draw_fn_r_15;
 978         break;
 979     case 16:
 980         s->line_fn_tab[0] = blizzard_draw_fn_16;
 981         s->line_fn_tab[1] = blizzard_draw_fn_r_16;
 982         break;
 983     case 24:
 984         s->line_fn_tab[0] = blizzard_draw_fn_24;
 985         s->line_fn_tab[1] = blizzard_draw_fn_r_24;
 986         break;
 987     case 32:
 988         s->line_fn_tab[0] = blizzard_draw_fn_32;
 989         s->line_fn_tab[1] = blizzard_draw_fn_r_32;
 990         break;
 991     default:
 992         fprintf(stderr, "%s: Bad color depth\n", __FUNCTION__);
 993         exit(1);
 994     }
 995
 996     blizzard_reset(s);
 997
 998     return s;
 999 }