hw/display/tcx.c

   1 /*
   2  * QEMU TCX Frame buffer
   3  *
   4  * Copyright (c) 2003-2005 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "qemu/osdep.h"
  26 #include "qemu/datadir.h"
  27 #include "qapi/error.h"
  28 #include "ui/console.h"
  29 #include "ui/pixel_ops.h"
  30 #include "hw/loader.h"
  31 #include "hw/qdev-properties.h"
  32 #include "hw/sysbus.h"
  33 #include "migration/vmstate.h"
  34 #include "qemu/error-report.h"
  35 #include "qemu/module.h"
  36 #include "qom/object.h"
  37
  38 #define TCX_ROM_FILE "QEMU,tcx.bin"
  39 #define FCODE_MAX_ROM_SIZE 0x10000
  40
  41 #define MAXX 1024
  42 #define MAXY 768
  43 #define TCX_DAC_NREGS    16
  44 #define TCX_THC_NREGS    0x1000
  45 #define TCX_DHC_NREGS    0x4000
  46 #define TCX_TEC_NREGS    0x1000
  47 #define TCX_ALT_NREGS    0x8000
  48 #define TCX_STIP_NREGS   0x800000
  49 #define TCX_BLIT_NREGS   0x800000
  50 #define TCX_RSTIP_NREGS  0x800000
  51 #define TCX_RBLIT_NREGS  0x800000
  52
  53 #define TCX_THC_MISC     0x818
  54 #define TCX_THC_CURSXY   0x8fc
  55 #define TCX_THC_CURSMASK 0x900
  56 #define TCX_THC_CURSBITS 0x980
  57
  58 #define TYPE_TCX "sun-tcx"
  59 OBJECT_DECLARE_SIMPLE_TYPE(TCXState, TCX)
  60
  61 struct TCXState {
  62     SysBusDevice parent_obj;
  63
  64     QemuConsole *con;
  65     qemu_irq irq;
  66     uint8_t *vram;
  67     uint32_t *vram24, *cplane;
  68     hwaddr prom_addr;
  69     MemoryRegion rom;
  70     MemoryRegion vram_mem;
  71     MemoryRegion vram_8bit;
  72     MemoryRegion vram_24bit;
  73     MemoryRegion stip;
  74     MemoryRegion blit;
  75     MemoryRegion vram_cplane;
  76     MemoryRegion rstip;
  77     MemoryRegion rblit;
  78     MemoryRegion tec;
  79     MemoryRegion dac;
  80     MemoryRegion thc;
  81     MemoryRegion dhc;
  82     MemoryRegion alt;
  83     MemoryRegion thc24;
  84
  85     ram_addr_t vram24_offset, cplane_offset;
  86     uint32_t tmpblit;
  87     uint32_t vram_size;
  88     uint32_t palette[260];
  89     uint8_t r[260], g[260], b[260];
  90     uint16_t width, height, depth;
  91     uint8_t dac_index, dac_state;
  92     uint32_t thcmisc;
  93     uint32_t cursmask[32];
  94     uint32_t cursbits[32];
  95     uint16_t cursx;
  96     uint16_t cursy;
  97 };
  98
  99 static void tcx_set_dirty(TCXState *s, ram_addr_t addr, int len)
 100 {
 101     memory_region_set_dirty(&s->vram_mem, addr, len);
 102
 103     if (s->depth == 24) {
 104         memory_region_set_dirty(&s->vram_mem, s->vram24_offset + addr * 4,
 105                                 len * 4);
 106         memory_region_set_dirty(&s->vram_mem, s->cplane_offset + addr * 4,
 107                                 len * 4);
 108     }
 109 }
 110
 111 static int tcx_check_dirty(TCXState *s, DirtyBitmapSnapshot *snap,
 112                            ram_addr_t addr, int len)
 113 {
 114     int ret;
 115
 116     ret = memory_region_snapshot_get_dirty(&s->vram_mem, snap, addr, len);
 117
 118     if (s->depth == 24) {
 119         ret |= memory_region_snapshot_get_dirty(&s->vram_mem, snap,
 120                                        s->vram24_offset + addr * 4, len * 4);
 121         ret |= memory_region_snapshot_get_dirty(&s->vram_mem, snap,
 122                                        s->cplane_offset + addr * 4, len * 4);
 123     }
 124
 125     return ret;
 126 }
 127
 128 static void update_palette_entries(TCXState *s, int start, int end)
 129 {
 130     int i;
 131
 132     for (i = start; i < end; i++) {
 133         s->palette[i] = rgb_to_pixel32(s->r[i], s->g[i], s->b[i]);
 134     }
 135     tcx_set_dirty(s, 0, memory_region_size(&s->vram_mem));
 136 }
 137
 138 static void tcx_draw_line32(TCXState *s1, uint8_t *d,
 139                             const uint8_t *s, int width)
 140 {
 141     int x;
 142     uint8_t val;
 143     uint32_t *p = (uint32_t *)d;
 144
 145     for (x = 0; x < width; x++) {
 146         val = *s++;
 147         *p++ = s1->palette[val];
 148     }
 149 }
 150
 151 static void tcx_draw_cursor32(TCXState *s1, uint8_t *d,
 152                               int y, int width)
 153 {
 154     int x, len;
 155     uint32_t mask, bits;
 156     uint32_t *p = (uint32_t *)d;
 157
 158     y = y - s1->cursy;
 159     mask = s1->cursmask[y];
 160     bits = s1->cursbits[y];
 161     len = MIN(width - s1->cursx, 32);
 162     p = &p[s1->cursx];
 163     for (x = 0; x < len; x++) {
 164         if (mask & 0x80000000) {
 165             if (bits & 0x80000000) {
 166                 *p = s1->palette[259];
 167             } else {
 168                 *p = s1->palette[258];
 169             }
 170         }
 171         p++;
 172         mask <<= 1;
 173         bits <<= 1;
 174     }
 175 }
 176
 177 /*
 178  * XXX Could be much more optimal:
 179  * detect if line/page/whole screen is in 24 bit mode
 180  */
 181 static inline void tcx24_draw_line32(TCXState *s1, uint8_t *d,
 182                                      const uint8_t *s, int width,
 183                                      const uint32_t *cplane,
 184                                      const uint32_t *s24)
 185 {
 186     int x, r, g, b;
 187     uint8_t val, *p8;
 188     uint32_t *p = (uint32_t *)d;
 189     uint32_t dval;
 190     for(x = 0; x < width; x++, s++, s24++) {
 191         if (be32_to_cpu(*cplane) & 0x03000000) {
 192             /* 24-bit direct, BGR order */
 193             p8 = (uint8_t *)s24;
 194             p8++;
 195             b = *p8++;
 196             g = *p8++;
 197             r = *p8;
 198             dval = rgb_to_pixel32(r, g, b);
 199         } else {
 200             /* 8-bit pseudocolor */
 201             val = *s;
 202             dval = s1->palette[val];
 203         }
 204         *p++ = dval;
 205         cplane++;
 206     }
 207 }
 208
 209 /* Fixed line length 1024 allows us to do nice tricks not possible on
 210    VGA... */
 211
 212 static void tcx_update_display(void *opaque)
 213 {
 214     TCXState *ts = opaque;
 215     DisplaySurface *surface = qemu_console_surface(ts->con);
 216     ram_addr_t page;
 217     DirtyBitmapSnapshot *snap = NULL;
 218     int y, y_start, dd, ds;
 219     uint8_t *d, *s;
 220
 221     assert(surface_bits_per_pixel(surface) == 32);
 222
 223     page = 0;
 224     y_start = -1;
 225     d = surface_data(surface);
 226     s = ts->vram;
 227     dd = surface_stride(surface);
 228     ds = 1024;
 229
 230     snap = memory_region_snapshot_and_clear_dirty(&ts->vram_mem, 0x0,
 231                                              memory_region_size(&ts->vram_mem),
 232                                              DIRTY_MEMORY_VGA);
 233
 234     for (y = 0; y < ts->height; y++, page += ds) {
 235         if (tcx_check_dirty(ts, snap, page, ds)) {
 236             if (y_start < 0)
 237                 y_start = y;
 238
 239             tcx_draw_line32(ts, d, s, ts->width);
 240             if (y >= ts->cursy && y < ts->cursy + 32 && ts->cursx < ts->width) {
 241                 tcx_draw_cursor32(ts, d, y, ts->width);
 242             }
 243         } else {
 244             if (y_start >= 0) {
 245                 /* flush to display */
 246                 dpy_gfx_update(ts->con, 0, y_start,
 247                                ts->width, y - y_start);
 248                 y_start = -1;
 249             }
 250         }
 251         s += ds;
 252         d += dd;
 253     }
 254     if (y_start >= 0) {
 255         /* flush to display */
 256         dpy_gfx_update(ts->con, 0, y_start,
 257                        ts->width, y - y_start);
 258     }
 259     g_free(snap);
 260 }
 261
 262 static void tcx24_update_display(void *opaque)
 263 {
 264     TCXState *ts = opaque;
 265     DisplaySurface *surface = qemu_console_surface(ts->con);
 266     ram_addr_t page;
 267     DirtyBitmapSnapshot *snap = NULL;
 268     int y, y_start, dd, ds;
 269     uint8_t *d, *s;
 270     uint32_t *cptr, *s24;
 271
 272     assert(surface_bits_per_pixel(surface) == 32);
 273
 274     page = 0;
 275     y_start = -1;
 276     d = surface_data(surface);
 277     s = ts->vram;
 278     s24 = ts->vram24;
 279     cptr = ts->cplane;
 280     dd = surface_stride(surface);
 281     ds = 1024;
 282
 283     snap = memory_region_snapshot_and_clear_dirty(&ts->vram_mem, 0x0,
 284                                              memory_region_size(&ts->vram_mem),
 285                                              DIRTY_MEMORY_VGA);
 286
 287     for (y = 0; y < ts->height; y++, page += ds) {
 288         if (tcx_check_dirty(ts, snap, page, ds)) {
 289             if (y_start < 0)
 290                 y_start = y;
 291
 292             tcx24_draw_line32(ts, d, s, ts->width, cptr, s24);
 293             if (y >= ts->cursy && y < ts->cursy+32 && ts->cursx < ts->width) {
 294                 tcx_draw_cursor32(ts, d, y, ts->width);
 295             }
 296         } else {
 297             if (y_start >= 0) {
 298                 /* flush to display */
 299                 dpy_gfx_update(ts->con, 0, y_start,
 300                                ts->width, y - y_start);
 301                 y_start = -1;
 302             }
 303         }
 304         d += dd;
 305         s += ds;
 306         cptr += ds;
 307         s24 += ds;
 308     }
 309     if (y_start >= 0) {
 310         /* flush to display */
 311         dpy_gfx_update(ts->con, 0, y_start,
 312                        ts->width, y - y_start);
 313     }
 314     g_free(snap);
 315 }
 316
 317 static void tcx_invalidate_display(void *opaque)
 318 {
 319     TCXState *s = opaque;
 320
 321     tcx_set_dirty(s, 0, memory_region_size(&s->vram_mem));
 322     qemu_console_resize(s->con, s->width, s->height);
 323 }
 324
 325 static void tcx24_invalidate_display(void *opaque)
 326 {
 327     TCXState *s = opaque;
 328
 329     tcx_set_dirty(s, 0, memory_region_size(&s->vram_mem));
 330     qemu_console_resize(s->con, s->width, s->height);
 331 }
 332
 333 static int vmstate_tcx_post_load(void *opaque, int version_id)
 334 {
 335     TCXState *s = opaque;
 336
 337     update_palette_entries(s, 0, 256);
 338     tcx_set_dirty(s, 0, memory_region_size(&s->vram_mem));
 339     return 0;
 340 }
 341
 342 static const VMStateDescription vmstate_tcx = {
 343     .name ="tcx",
 344     .version_id = 4,
 345     .minimum_version_id = 4,
 346     .post_load = vmstate_tcx_post_load,
 347     .fields = (VMStateField[]) {
 348         VMSTATE_UINT16(height, TCXState),
 349         VMSTATE_UINT16(width, TCXState),
 350         VMSTATE_UINT16(depth, TCXState),
 351         VMSTATE_BUFFER(r, TCXState),
 352         VMSTATE_BUFFER(g, TCXState),
 353         VMSTATE_BUFFER(b, TCXState),
 354         VMSTATE_UINT8(dac_index, TCXState),
 355         VMSTATE_UINT8(dac_state, TCXState),
 356         VMSTATE_END_OF_LIST()
 357     }
 358 };
 359
 360 static void tcx_reset(DeviceState *d)
 361 {
 362     TCXState *s = TCX(d);
 363
 364     /* Initialize palette */
 365     memset(s->r, 0, 260);
 366     memset(s->g, 0, 260);
 367     memset(s->b, 0, 260);
 368     s->r[255] = s->g[255] = s->b[255] = 255;
 369     s->r[256] = s->g[256] = s->b[256] = 255;
 370     s->r[258] = s->g[258] = s->b[258] = 255;
 371     update_palette_entries(s, 0, 260);
 372     memset(s->vram, 0, MAXX*MAXY);
 373     memory_region_reset_dirty(&s->vram_mem, 0, MAXX * MAXY * (1 + 4 + 4),
 374                               DIRTY_MEMORY_VGA);
 375     s->dac_index = 0;
 376     s->dac_state = 0;
 377     s->cursx = 0xf000; /* Put cursor off screen */
 378     s->cursy = 0xf000;
 379 }
 380
 381 static uint64_t tcx_dac_readl(void *opaque, hwaddr addr,
 382                               unsigned size)
 383 {
 384     TCXState *s = opaque;
 385     uint32_t val = 0;
 386
 387     switch (s->dac_state) {
 388     case 0:
 389         val = s->r[s->dac_index] << 24;
 390         s->dac_state++;
 391         break;
 392     case 1:
 393         val = s->g[s->dac_index] << 24;
 394         s->dac_state++;
 395         break;
 396     case 2:
 397         val = s->b[s->dac_index] << 24;
 398         s->dac_index = (s->dac_index + 1) & 0xff; /* Index autoincrement */
 399         /* fall through */
 400     default:
 401         s->dac_state = 0;
 402         break;
 403     }
 404
 405     return val;
 406 }
 407
 408 static void tcx_dac_writel(void *opaque, hwaddr addr, uint64_t val,
 409                            unsigned size)
 410 {
 411     TCXState *s = opaque;
 412     unsigned index;
 413
 414     switch (addr) {
 415     case 0: /* Address */
 416         s->dac_index = val >> 24;
 417         s->dac_state = 0;
 418         break;
 419     case 4:  /* Pixel colours */
 420     case 12: /* Overlay (cursor) colours */
 421         if (addr & 8) {
 422             index = (s->dac_index & 3) + 256;
 423         } else {
 424             index = s->dac_index;
 425         }
 426         switch (s->dac_state) {
 427         case 0:
 428             s->r[index] = val >> 24;
 429             update_palette_entries(s, index, index + 1);
 430             s->dac_state++;
 431             break;
 432         case 1:
 433             s->g[index] = val >> 24;
 434             update_palette_entries(s, index, index + 1);
 435             s->dac_state++;
 436             break;
 437         case 2:
 438             s->b[index] = val >> 24;
 439             update_palette_entries(s, index, index + 1);
 440             s->dac_index = (s->dac_index + 1) & 0xff; /* Index autoincrement */
 441             /* fall through */
 442         default:
 443             s->dac_state = 0;
 444             break;
 445         }
 446         break;
 447     default: /* Control registers */
 448         break;
 449     }
 450 }
 451
 452 static const MemoryRegionOps tcx_dac_ops = {
 453     .read = tcx_dac_readl,
 454     .write = tcx_dac_writel,
 455     .endianness = DEVICE_NATIVE_ENDIAN,
 456     .valid = {
 457         .min_access_size = 4,
 458         .max_access_size = 4,
 459     },
 460 };
 461
 462 static uint64_t tcx_stip_readl(void *opaque, hwaddr addr,
 463                                unsigned size)
 464 {
 465     return 0;
 466 }
 467
 468 static void tcx_stip_writel(void *opaque, hwaddr addr,
 469                             uint64_t val, unsigned size)
 470 {
 471     TCXState *s = opaque;
 472     int i;
 473     uint32_t col;
 474
 475     if (!(addr & 4)) {
 476         s->tmpblit = val;
 477     } else {
 478         addr = (addr >> 3) & 0xfffff;
 479         col = cpu_to_be32(s->tmpblit);
 480         if (s->depth == 24) {
 481             for (i = 0; i < 32; i++)  {
 482                 if (val & 0x80000000) {
 483                     s->vram[addr + i] = s->tmpblit;
 484                     s->vram24[addr + i] = col;
 485                 }
 486                 val <<= 1;
 487             }
 488         } else {
 489             for (i = 0; i < 32; i++)  {
 490                 if (val & 0x80000000) {
 491                     s->vram[addr + i] = s->tmpblit;
 492                 }
 493                 val <<= 1;
 494             }
 495         }
 496         tcx_set_dirty(s, addr, 32);
 497     }
 498 }
 499
 500 static void tcx_rstip_writel(void *opaque, hwaddr addr,
 501                              uint64_t val, unsigned size)
 502 {
 503     TCXState *s = opaque;
 504     int i;
 505     uint32_t col;
 506
 507     if (!(addr & 4)) {
 508         s->tmpblit = val;
 509     } else {
 510         addr = (addr >> 3) & 0xfffff;
 511         col = cpu_to_be32(s->tmpblit);
 512         if (s->depth == 24) {
 513             for (i = 0; i < 32; i++) {
 514                 if (val & 0x80000000) {
 515                     s->vram[addr + i] = s->tmpblit;
 516                     s->vram24[addr + i] = col;
 517                     s->cplane[addr + i] = col;
 518                 }
 519                 val <<= 1;
 520             }
 521         } else {
 522             for (i = 0; i < 32; i++)  {
 523                 if (val & 0x80000000) {
 524                     s->vram[addr + i] = s->tmpblit;
 525                 }
 526                 val <<= 1;
 527             }
 528         }
 529         tcx_set_dirty(s, addr, 32);
 530     }
 531 }
 532
 533 static const MemoryRegionOps tcx_stip_ops = {
 534     .read = tcx_stip_readl,
 535     .write = tcx_stip_writel,
 536     .endianness = DEVICE_NATIVE_ENDIAN,
 537     .impl = {
 538         .min_access_size = 4,
 539         .max_access_size = 4,
 540     },
 541     .valid = {
 542         .min_access_size = 4,
 543         .max_access_size = 8,
 544     },
 545 };
 546
 547 static const MemoryRegionOps tcx_rstip_ops = {
 548     .read = tcx_stip_readl,
 549     .write = tcx_rstip_writel,
 550     .endianness = DEVICE_NATIVE_ENDIAN,
 551     .impl = {
 552         .min_access_size = 4,
 553         .max_access_size = 4,
 554     },
 555     .valid = {
 556         .min_access_size = 4,
 557         .max_access_size = 8,
 558     },
 559 };
 560
 561 static uint64_t tcx_blit_readl(void *opaque, hwaddr addr,
 562                                unsigned size)
 563 {
 564     return 0;
 565 }
 566
 567 static void tcx_blit_writel(void *opaque, hwaddr addr,
 568                             uint64_t val, unsigned size)
 569 {
 570     TCXState *s = opaque;
 571     uint32_t adsr, len;
 572     int i;
 573
 574     if (!(addr & 4)) {
 575         s->tmpblit = val;
 576     } else {
 577         addr = (addr >> 3) & 0xfffff;
 578         adsr = val & 0xffffff;
 579         len = ((val >> 24) & 0x1f) + 1;
 580         if (adsr == 0xffffff) {
 581             memset(&s->vram[addr], s->tmpblit, len);
 582             if (s->depth == 24) {
 583                 val = s->tmpblit & 0xffffff;
 584                 val = cpu_to_be32(val);
 585                 for (i = 0; i < len; i++) {
 586                     s->vram24[addr + i] = val;
 587                 }
 588             }
 589         } else {
 590             memcpy(&s->vram[addr], &s->vram[adsr], len);
 591             if (s->depth == 24) {
 592                 memcpy(&s->vram24[addr], &s->vram24[adsr], len * 4);
 593             }
 594         }
 595         tcx_set_dirty(s, addr, len);
 596     }
 597 }
 598
 599 static void tcx_rblit_writel(void *opaque, hwaddr addr,
 600                          uint64_t val, unsigned size)
 601 {
 602     TCXState *s = opaque;
 603     uint32_t adsr, len;
 604     int i;
 605
 606     if (!(addr & 4)) {
 607         s->tmpblit = val;
 608     } else {
 609         addr = (addr >> 3) & 0xfffff;
 610         adsr = val & 0xffffff;
 611         len = ((val >> 24) & 0x1f) + 1;
 612         if (adsr == 0xffffff) {
 613             memset(&s->vram[addr], s->tmpblit, len);
 614             if (s->depth == 24) {
 615                 val = s->tmpblit & 0xffffff;
 616                 val = cpu_to_be32(val);
 617                 for (i = 0; i < len; i++) {
 618                     s->vram24[addr + i] = val;
 619                     s->cplane[addr + i] = val;
 620                 }
 621             }
 622         } else {
 623             memcpy(&s->vram[addr], &s->vram[adsr], len);
 624             if (s->depth == 24) {
 625                 memcpy(&s->vram24[addr], &s->vram24[adsr], len * 4);
 626                 memcpy(&s->cplane[addr], &s->cplane[adsr], len * 4);
 627             }
 628         }
 629         tcx_set_dirty(s, addr, len);
 630     }
 631 }
 632
 633 static const MemoryRegionOps tcx_blit_ops = {
 634     .read = tcx_blit_readl,
 635     .write = tcx_blit_writel,
 636     .endianness = DEVICE_NATIVE_ENDIAN,
 637     .impl = {
 638         .min_access_size = 4,
 639         .max_access_size = 4,
 640     },
 641     .valid = {
 642         .min_access_size = 4,
 643         .max_access_size = 8,
 644     },
 645 };
 646
 647 static const MemoryRegionOps tcx_rblit_ops = {
 648     .read = tcx_blit_readl,
 649     .write = tcx_rblit_writel,
 650     .endianness = DEVICE_NATIVE_ENDIAN,
 651     .impl = {
 652         .min_access_size = 4,
 653         .max_access_size = 4,
 654     },
 655     .valid = {
 656         .min_access_size = 4,
 657         .max_access_size = 8,
 658     },
 659 };
 660
 661 static void tcx_invalidate_cursor_position(TCXState *s)
 662 {
 663     int ymin, ymax, start, end;
 664
 665     /* invalidate only near the cursor */
 666     ymin = s->cursy;
 667     if (ymin >= s->height) {
 668         return;
 669     }
 670     ymax = MIN(s->height, ymin + 32);
 671     start = ymin * 1024;
 672     end   = ymax * 1024;
 673
 674     tcx_set_dirty(s, start, end - start);
 675 }
 676
 677 static uint64_t tcx_thc_readl(void *opaque, hwaddr addr,
 678                             unsigned size)
 679 {
 680     TCXState *s = opaque;
 681     uint64_t val;
 682
 683     if (addr == TCX_THC_MISC) {
 684         val = s->thcmisc | 0x02000000;
 685     } else {
 686         val = 0;
 687     }
 688     return val;
 689 }
 690
 691 static void tcx_thc_writel(void *opaque, hwaddr addr,
 692                          uint64_t val, unsigned size)
 693 {
 694     TCXState *s = opaque;
 695
 696     if (addr == TCX_THC_CURSXY) {
 697         tcx_invalidate_cursor_position(s);
 698         s->cursx = val >> 16;
 699         s->cursy = val;
 700         tcx_invalidate_cursor_position(s);
 701     } else if (addr >= TCX_THC_CURSMASK && addr < TCX_THC_CURSMASK + 128) {
 702         s->cursmask[(addr - TCX_THC_CURSMASK) >> 2] = val;
 703         tcx_invalidate_cursor_position(s);
 704     } else if (addr >= TCX_THC_CURSBITS && addr < TCX_THC_CURSBITS + 128) {
 705         s->cursbits[(addr - TCX_THC_CURSBITS) >> 2] = val;
 706         tcx_invalidate_cursor_position(s);
 707     } else if (addr == TCX_THC_MISC) {
 708         s->thcmisc = val;
 709     }
 710
 711 }
 712
 713 static const MemoryRegionOps tcx_thc_ops = {
 714     .read = tcx_thc_readl,
 715     .write = tcx_thc_writel,
 716     .endianness = DEVICE_NATIVE_ENDIAN,
 717     .valid = {
 718         .min_access_size = 4,
 719         .max_access_size = 4,
 720     },
 721 };
 722
 723 static uint64_t tcx_dummy_readl(void *opaque, hwaddr addr,
 724                             unsigned size)
 725 {
 726     return 0;
 727 }
 728
 729 static void tcx_dummy_writel(void *opaque, hwaddr addr,
 730                          uint64_t val, unsigned size)
 731 {
 732     return;
 733 }
 734
 735 static const MemoryRegionOps tcx_dummy_ops = {
 736     .read = tcx_dummy_readl,
 737     .write = tcx_dummy_writel,
 738     .endianness = DEVICE_NATIVE_ENDIAN,
 739     .valid = {
 740         .min_access_size = 4,
 741         .max_access_size = 4,
 742     },
 743 };
 744
 745 static const GraphicHwOps tcx_ops = {
 746     .invalidate = tcx_invalidate_display,
 747     .gfx_update = tcx_update_display,
 748 };
 749
 750 static const GraphicHwOps tcx24_ops = {
 751     .invalidate = tcx24_invalidate_display,
 752     .gfx_update = tcx24_update_display,
 753 };
 754
 755 static void tcx_initfn(Object *obj)
 756 {
 757     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
 758     TCXState *s = TCX(obj);
 759
 760     memory_region_init_rom_nomigrate(&s->rom, obj, "tcx.prom",
 761                                      FCODE_MAX_ROM_SIZE, &error_fatal);
 762     sysbus_init_mmio(sbd, &s->rom);
 763
 764     /* 2/STIP : Stippler */
 765     memory_region_init_io(&s->stip, obj, &tcx_stip_ops, s, "tcx.stip",
 766                           TCX_STIP_NREGS);
 767     sysbus_init_mmio(sbd, &s->stip);
 768
 769     /* 3/BLIT : Blitter */
 770     memory_region_init_io(&s->blit, obj, &tcx_blit_ops, s, "tcx.blit",
 771                           TCX_BLIT_NREGS);
 772     sysbus_init_mmio(sbd, &s->blit);
 773
 774     /* 5/RSTIP : Raw Stippler */
 775     memory_region_init_io(&s->rstip, obj, &tcx_rstip_ops, s, "tcx.rstip",
 776                           TCX_RSTIP_NREGS);
 777     sysbus_init_mmio(sbd, &s->rstip);
 778
 779     /* 6/RBLIT : Raw Blitter */
 780     memory_region_init_io(&s->rblit, obj, &tcx_rblit_ops, s, "tcx.rblit",
 781                           TCX_RBLIT_NREGS);
 782     sysbus_init_mmio(sbd, &s->rblit);
 783
 784     /* 7/TEC : ??? */
 785     memory_region_init_io(&s->tec, obj, &tcx_dummy_ops, s, "tcx.tec",
 786                           TCX_TEC_NREGS);
 787     sysbus_init_mmio(sbd, &s->tec);
 788
 789     /* 8/CMAP : DAC */
 790     memory_region_init_io(&s->dac, obj, &tcx_dac_ops, s, "tcx.dac",
 791                           TCX_DAC_NREGS);
 792     sysbus_init_mmio(sbd, &s->dac);
 793
 794     /* 9/THC : Cursor */
 795     memory_region_init_io(&s->thc, obj, &tcx_thc_ops, s, "tcx.thc",
 796                           TCX_THC_NREGS);
 797     sysbus_init_mmio(sbd, &s->thc);
 798
 799     /* 11/DHC : ??? */
 800     memory_region_init_io(&s->dhc, obj, &tcx_dummy_ops, s, "tcx.dhc",
 801                           TCX_DHC_NREGS);
 802     sysbus_init_mmio(sbd, &s->dhc);
 803
 804     /* 12/ALT : ??? */
 805     memory_region_init_io(&s->alt, obj, &tcx_dummy_ops, s, "tcx.alt",
 806                           TCX_ALT_NREGS);
 807     sysbus_init_mmio(sbd, &s->alt);
 808 }
 809
 810 static void tcx_realizefn(DeviceState *dev, Error **errp)
 811 {
 812     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
 813     TCXState *s = TCX(dev);
 814     ram_addr_t vram_offset = 0;
 815     int size, ret;
 816     uint8_t *vram_base;
 817     char *fcode_filename;
 818
 819     memory_region_init_ram_nomigrate(&s->vram_mem, OBJECT(s), "tcx.vram",
 820                            s->vram_size * (1 + 4 + 4), &error_fatal);
 821     vmstate_register_ram_global(&s->vram_mem);
 822     memory_region_set_log(&s->vram_mem, true, DIRTY_MEMORY_VGA);
 823     vram_base = memory_region_get_ram_ptr(&s->vram_mem);
 824
 825     /* 10/ROM : FCode ROM */
 826     vmstate_register_ram_global(&s->rom);
 827     fcode_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, TCX_ROM_FILE);
 828     if (fcode_filename) {
 829         ret = load_image_mr(fcode_filename, &s->rom);
 830         g_free(fcode_filename);
 831         if (ret < 0 || ret > FCODE_MAX_ROM_SIZE) {
 832             warn_report("tcx: could not load prom '%s'", TCX_ROM_FILE);
 833         }
 834     }
 835
 836     /* 0/DFB8 : 8-bit plane */
 837     s->vram = vram_base;
 838     size = s->vram_size;
 839     memory_region_init_alias(&s->vram_8bit, OBJECT(s), "tcx.vram.8bit",
 840                              &s->vram_mem, vram_offset, size);
 841     sysbus_init_mmio(sbd, &s->vram_8bit);
 842     vram_offset += size;
 843     vram_base += size;
 844
 845     /* 1/DFB24 : 24bit plane */
 846     size = s->vram_size * 4;
 847     s->vram24 = (uint32_t *)vram_base;
 848     s->vram24_offset = vram_offset;
 849     memory_region_init_alias(&s->vram_24bit, OBJECT(s), "tcx.vram.24bit",
 850                              &s->vram_mem, vram_offset, size);
 851     sysbus_init_mmio(sbd, &s->vram_24bit);
 852     vram_offset += size;
 853     vram_base += size;
 854
 855     /* 4/RDFB32 : Raw Framebuffer */
 856     size = s->vram_size * 4;
 857     s->cplane = (uint32_t *)vram_base;
 858     s->cplane_offset = vram_offset;
 859     memory_region_init_alias(&s->vram_cplane, OBJECT(s), "tcx.vram.cplane",
 860                              &s->vram_mem, vram_offset, size);
 861     sysbus_init_mmio(sbd, &s->vram_cplane);
 862
 863     /* 9/THC24bits : NetBSD writes here even with 8-bit display: dummy */
 864     if (s->depth == 8) {
 865         memory_region_init_io(&s->thc24, OBJECT(s), &tcx_dummy_ops, s,
 866                               "tcx.thc24", TCX_THC_NREGS);
 867         sysbus_init_mmio(sbd, &s->thc24);
 868     }
 869
 870     sysbus_init_irq(sbd, &s->irq);
 871
 872     if (s->depth == 8) {
 873         s->con = graphic_console_init(dev, 0, &tcx_ops, s);
 874     } else {
 875         s->con = graphic_console_init(dev, 0, &tcx24_ops, s);
 876     }
 877     s->thcmisc = 0;
 878
 879     qemu_console_resize(s->con, s->width, s->height);
 880 }
 881
 882 static Property tcx_properties[] = {
 883     DEFINE_PROP_UINT32("vram_size", TCXState, vram_size, -1),
 884     DEFINE_PROP_UINT16("width",    TCXState, width,     -1),
 885     DEFINE_PROP_UINT16("height",   TCXState, height,    -1),
 886     DEFINE_PROP_UINT16("depth",    TCXState, depth,     -1),
 887     DEFINE_PROP_END_OF_LIST(),
 888 };
 889
 890 static void tcx_class_init(ObjectClass *klass, void *data)
 891 {
 892     DeviceClass *dc = DEVICE_CLASS(klass);
 893
 894     dc->realize = tcx_realizefn;
 895     dc->reset = tcx_reset;
 896     dc->vmsd = &vmstate_tcx;
 897     device_class_set_props(dc, tcx_properties);
 898 }
 899
 900 static const TypeInfo tcx_info = {
 901     .name          = TYPE_TCX,
 902     .parent        = TYPE_SYS_BUS_DEVICE,
 903     .instance_size = sizeof(TCXState),
 904     .instance_init = tcx_initfn,
 905     .class_init    = tcx_class_init,
 906 };
 907
 908 static void tcx_register_types(void)
 909 {
 910     type_register_static(&tcx_info);
 911 }
 912
 913 type_init(tcx_register_types)