palacios/src/devices/cirrus_gfx_card.c

   1 /*
   2  * This file is part of the Palacios Virtual Machine Monitor developed
   3  * by the V3VEE Project with funding from the United States National
   4  * Science Foundation and the Department of Energy.
   5  *
   6  * The V3VEE Project is a joint project between Northwestern University
   7  * and the University of New Mexico.  You can find out more at
   8  * http://www.v3vee.org
   9  *
  10  * Copyright (c) 2009, Robert Deloatch <rtdeloatch@gmail.com>
  11  * Copyright (c) 2009, Steven Jaconette <stevenjaconette2007@u.northwestern.edu>
  12  * Copyright (c) 2009, The V3VEE Project <http://www.v3vee.org>
  13  * All rights reserved.
  14  *
  15  * Author: Robdert Deloatch <rtdeloatch@gmail.com>
  16  *         Steven Jaconette <stevenjaconette2007@u.northwestern.edu>
  17  *
  18  * This is free software.  You are permitted to use,
  19  * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
  20  */
  21
  22 #include <devices/cirrus_gfx_card.h>
  23 #include <palacios/vmm.h>
  24 #include <palacios/vmm_emulator.h>
  25 #include <palacios/vmm_decoder.h>
  26 #include <palacios/vm_guest_mem.h>
  27 #include <palacios/vmm_decoder.h>
  28 #include <palacios/vmm_paging.h>
  29 #include <palacios/vmm_instr_emulator.h>
  30 #include <palacios/vm_guest_mem.h>
  31 #include <palacios/vmm_socket.h>
  32 #include <palacios/vmm_host_events.h>
  33 #include <devices/pci.h>
  34 #include <devices/pci_types.h>
  35
  36 //#include "network_console.h"
  37
  38
  39
  40 /* #ifndef DEBUG_CIRRUS_GFX_CARD
  41 #undef PrintDebug
  42 #define PrintDebug(fmt, args...)
  43 #endif */
  44
  45
  46 #define START_ADDR 0xA0000
  47 #define END_ADDR 0xC0000
  48
  49 #define SIZE_OF_REGION (END_ADDR - START_ADDR)
  50
  51 #define PASSTHROUGH 1
  52 #define PORT_OFFSET 0x3B0
  53
  54 struct video_internal {
  55     addr_t video_memory_pa;
  56     uint8_t * video_memory;
  57
  58     struct vm_device * pci_bus;
  59     struct pci_device * pci_dev;
  60
  61     int client_fd;
  62
  63     uint_t screen_bottom;
  64     uint_t ports[44];
  65     uint8_t reg_3C4[256];
  66     uint8_t reg_3CE[256];
  67     uint16_t start_addr_offset;
  68     uint16_t old_start_addr_offset;
  69     uint16_t cursor_addr;
  70     uint8_t reg_3D5[25];
  71
  72 };
  73
  74 void video_do_in(uint16_t port, void * src, uint_t length){
  75 #if PASSTHROUGH
  76     uint_t i;
  77     switch (length) {
  78         case 1:
  79             ((uint8_t *)src)[0] = v3_inb(port);
  80             break;
  81         case 2:
  82             ((uint16_t *)src)[0] = v3_inw(port);
  83             break;
  84         case 4:
  85             ((uint32_t *)src)[0] = v3_indw(port);
  86             break;
  87         default:
  88             for (i = 0; i < length; i++) {
  89                 ((uint8_t *)src)[i] = v3_inb(port);
  90             }
  91     }
  92 #endif
  93 }
  94
  95 void video_do_out(uint16_t port, void * src, uint_t length){
  96 #if PASSTHROUGH
  97     uint_t i;
  98     switch (length) {
  99         case 1:
 100             v3_outb(port,((uint8_t *)src)[0]);
 101             break;
 102         case 2:
 103             v3_outw(port,((uint16_t *)src)[0]);
 104             break;
 105         case 4:
 106             v3_outdw(port,((uint32_t *)src)[0]);
 107             break;
 108         default:
 109             for (i = 0; i < length; i++) {
 110                 v3_outb(port, ((uint8_t *)src)[i]);
 111             }
 112     }
 113 #endif
 114 }
 115
 116 static int video_write_mem(struct guest_info * core, addr_t guest_addr, void * dest, uint_t length, void * priv_data) {
 117     struct vm_device * dev = (struct vm_device *)priv_data;
 118     struct video_internal * data = (struct video_internal *)dev->private_data;
 119     addr_t write_offset = guest_addr - START_ADDR;
 120 //    uint_t difference = 0x18000;
 121 //    int i = 0;
 122
 123     /*
 124     PrintDebug("\n\nInside Video Write Memory.\n\n");
 125     PrintDebug("Guest address: %p length = %d\n", (void *)guest_addr, length);
 126
 127     PrintDebug("Write offset: 0x%x\n", (uint_t)write_offset);
 128     PrintDebug("Video_Memory: ");
 129
 130     for (i = 0; i < length; i += 2) {
 131         PrintDebug("%c", ((char *)(V3_VAddr((void *)guest_addr)))[i]);
 132     }
 133     */
 134 #if PASSTHROUGH
 135     memcpy(data->video_memory + write_offset, V3_VAddr((void*)guest_addr), length);
 136 #endif
 137
 138
 139 /*    if (send_update(data->client_fd, data->video_memory + difference, write_offset-difference, data->start_addr_offset, length) == -1) {
 140         PrintError("Error sending update to client\n");
 141         return -1;
 142     }
 143 */
 144     // PrintDebug(" Done.\n");
 145     return length;
 146 }
 147
 148 static int video_read_port(struct guest_info * dev, uint16_t port, void * dest, uint_t length, void * priv_data ) {
 149     PrintDebug("Video: Read port 0x%x\n",port);
 150     video_do_in(port, dest, length);
 151     return length;
 152 }
 153
 154 static int video_read_port_generic(struct guest_info * dev, uint16_t port, void * dest, uint_t length, void * priv_data) {
 155     memset(dest, 0, length);
 156     video_do_in(port, dest, length);
 157     return length;
 158 }
 159
 160
 161 static int video_write_port(struct guest_info * dev, uint16_t port, void * dest, uint_t length, void * priv_data) {
 162
 163       PrintDebug("Video: write port 0x%x...Wrote: ", port);
 164       uint_t i;
 165       for(i = 0; i < length; i++){
 166       PrintDebug("%x", ((uint8_t*)dest)[i]);
 167       }
 168       PrintDebug("...Done\n");
 169     video_do_out(port, dest, length);
 170     return length;
 171 }
 172
 173 static int video_write_port_store(struct guest_info * dev, uint16_t port, void * dest, uint_t length, void * priv_data) {
 174
 175       PrintDebug("Entering video_write_port_store...port 0x%x\n", port);
 176       uint_t i;
 177       for(i = 0; i < length; i++){
 178       PrintDebug("%x", ((uint8_t*)dest)[i]);
 179       }
 180       PrintDebug("...Done\n");
 181
 182     struct video_internal * video_state = (struct video_internal *)priv_data;
 183
 184     video_state->ports[port - PORT_OFFSET] = 0;
 185     memcpy(video_state->ports + (port - PORT_OFFSET), dest, length);
 186     video_do_out(port, dest, length);
 187
 188     return length;
 189 }
 190
 191 static int video_write_port_3D5(struct guest_info * dev, uint16_t port, void * dest, uint_t length, void * priv_data) {
 192     struct video_internal * video_state = (struct video_internal *)priv_data;
 193     uint8_t new_start = 0;
 194     uint_t index = 0;
 195
 196     PrintDebug("Video: write port 0x%x...Wrote: ", port);
 197     {
 198         uint_t i = 0;
 199         for (i = 0; i < length; i++){
 200             PrintDebug("%x", ((uint8_t*)dest)[i]);
 201         }
 202         PrintDebug("...Done\n");
 203     }
 204
 205     video_state->ports[port - PORT_OFFSET] = 0;
 206
 207     memcpy(video_state->ports + (port - PORT_OFFSET), dest, length);
 208
 209     memcpy(&(video_state->reg_3D5[index]), dest, length);
 210
 211     index = video_state->ports[port - 1 - PORT_OFFSET];
 212
 213     // JRL: Add length check
 214     new_start = *((uint8_t *)dest);
 215
 216
 217     switch (index) {
 218         case 0x0c:
 219             video_state->old_start_addr_offset = video_state->start_addr_offset;
 220
 221             video_state->start_addr_offset = (new_start << 8);
 222
 223             break;
 224         case 0x0d: {
 225             int diff = 0;
 226
 227             video_state->start_addr_offset += new_start;
 228
 229             diff = video_state->start_addr_offset - video_state->old_start_addr_offset;
 230             diff /= 80;
 231
 232             PrintDebug("Scroll lines = %d\n", diff);
 233
 234 //          send_scroll(video_state->client_fd, diff, video_state->video_memory);
 235
 236             break;
 237         }
 238         case 0x0E:
 239             video_state->cursor_addr = new_start << 8;
 240
 241             break;
 242         case 0x0F: {
 243             uint_t x = 0;
 244             uint_t y = 0;
 245
 246             video_state->cursor_addr += new_start;
 247
 248             x = ((video_state->cursor_addr) % 80) + 1;
 249             y = (((video_state->cursor_addr) / 80) - ((video_state->start_addr_offset / 80))) + 1;
 250
 251             PrintDebug("New Cursor Location; X=%d Y=%d\n", x, y);
 252
 253 //          send_cursor_update(video_state->client_fd, x, y);
 254             break;
 255         }
 256         default:
 257             break;
 258     }
 259
 260     video_do_out(port, dest, length);
 261
 262     return length;
 263 }
 264
 265
 266 static int video_write_port_3C5(struct guest_info * dev, uint16_t port, void * dest, uint_t length, void * priv_data ) {
 267     struct video_internal * video_state = (struct video_internal *)priv_data;
 268     uint_t index = 0;
 269
 270
 271     PrintDebug("Entering write_port_3C5....port 0x%x\n", port);
 272     {
 273         uint_t i = 0;
 274         for(i = 0; i < length; i++){
 275             PrintDebug("%x", ((uint8_t*)dest)[i]);
 276         }
 277         PrintDebug("...Done\n");
 278     }
 279
 280     video_state->ports[port - PORT_OFFSET] = 0;
 281     memcpy(video_state->ports + (port - PORT_OFFSET), dest, length);
 282
 283     index = video_state->ports[port - 1 - PORT_OFFSET];
 284
 285     memcpy(&(video_state->reg_3C4[index]), dest, length);
 286     video_do_out(port, dest, length);
 287
 288     return length;
 289 }
 290
 291 static int video_write_port_3CF(struct guest_info * dev, uint16_t port, void * dest, uint_t length, void * priv_data) {
 292     struct video_internal * video_state = (struct video_internal *)priv_data;
 293
 294     PrintDebug("Entering write_port_3CF....port 0x%x\n", port);
 295
 296     {
 297         uint_t i = 0;
 298         for(i = 0; i < length; i++){
 299             PrintDebug("%x", ((uint8_t*)dest)[i]);
 300         }
 301         PrintDebug("...Done\n");
 302     }
 303
 304     video_state->ports[port - PORT_OFFSET] = 0;
 305     memcpy(video_state->ports + (port - PORT_OFFSET), dest, length);
 306
 307     uint_t index = video_state->ports[port - 1 - PORT_OFFSET];
 308     memcpy(&(video_state->reg_3CE[index]), dest, length);
 309     video_do_out(port, dest, length);
 310     return length;
 311 }
 312
 313 static int video_write_port_3D4(struct guest_info * dev, uint16_t port, void * dest, uint_t length, void * priv_data){
 314     struct video_internal * video_state = (struct video_internal *)priv_data;
 315
 316 #if 1
 317     if (length == 1) {
 318
 319         video_state->ports[port - PORT_OFFSET] = 0;
 320         memcpy(video_state->ports + (port - PORT_OFFSET), dest, length);
 321
 322     } else if (length == 2) {
 323         uint16_t new_start = *((uint16_t *)dest);
 324         uint16_t cursor_start = *((uint16_t *)dest);;
 325
 326         //Updating the cursor
 327         if ((cursor_start & 0x00FF) == 0x000E) {
 328
 329             cursor_start = (cursor_start & 0xFF00);
 330             video_state->cursor_addr = cursor_start;
 331
 332         } else if ((cursor_start & 0x00FF) == 0x000F) {
 333             uint_t x = 0;
 334             uint_t y = 0;
 335
 336             video_state->cursor_addr += ((cursor_start >> 8) & 0x00FF);
 337
 338             x = ((video_state->cursor_addr) % 80) + 1;
 339             y = (((video_state->cursor_addr) / 80) - ((video_state->start_addr_offset / 80))) + 1;
 340
 341             PrintDebug("New Cursor Location; X=%d Y=%d\n", x, y);
 342
 343 //          send_cursor_update(video_state->client_fd, x, y);
 344         }
 345
 346         //Checking to see if scrolling is needed
 347         if ((new_start & 0x00FF) == 0x000C) {
 348
 349             video_state->old_start_addr_offset = video_state->start_addr_offset;
 350             new_start = (new_start & 0xFF00);
 351             video_state->start_addr_offset = new_start;
 352
 353         } else if ((new_start & 0x00FF) == 0x000D) {
 354             int diff = 0;
 355
 356             video_state->start_addr_offset += ((new_start >> 8) & 0x00FF);
 357
 358             diff =  video_state->start_addr_offset - video_state->old_start_addr_offset;
 359             diff /= 80;
 360
 361             PrintDebug("Scroll lines = %d\n", diff);
 362
 363 //          send_scroll(video_state->client_fd, diff, video_state->video_memory+0x18000);
 364         }
 365     } else {
 366         // JRL ??
 367         return -1;
 368     }
 369 #endif
 370     video_do_out(port, dest, length);
 371     return length;
 372 }
 373
 374 static int video_write_mem_region(struct guest_info * core, addr_t guest_addr, void * dest, uint_t length, void * priv_data) {;
 375     PrintDebug("Video write mem region guest_addr: 0x%p, src: 0x%p, length: %d, Value?= %x\n", (void *)guest_addr, dest, length, *((uint32_t *)V3_VAddr((void *)guest_addr)));
 376     return length;
 377 }
 378
 379 static int video_read_mem_region(struct guest_info * core, addr_t guest_addr, void * dest, uint_t length, void * priv_data){
 380     PrintDebug("Video:  Within video_read_mem_region\n");
 381     return length;
 382 }
 383
 384 static int video_write_io_region(struct guest_info * core, addr_t guest_addr, void * dest, uint_t length, void * priv_data){
 385     PrintDebug("Video:  Within video_write_io_region\n");
 386     return length;
 387 }
 388
 389 static int video_read_io_region(struct guest_info * core, addr_t guest_addr, void * dest, uint_t length, void * priv_data){
 390     PrintDebug("Video:  Within video_read_io_region\n");
 391     return length;
 392 }
 393
 394 static int cirrus_gfx_card_free(struct vm_device * dev) {
 395     v3_unhook_mem(dev->vm, V3_MEM_CORE_ANY, START_ADDR);
 396     return 0;
 397 }
 398
 399 /*
 400 static int cirrus_gfx_card_reset_device(struct vm_device * dev) {
 401     PrintDebug("Video: reset device\n");
 402     return 0;
 403 }
 404
 405 static int cirrus_gfx_card_start_device(struct vm_device * dev) {
 406     PrintDebug("Video: start device\n");
 407     return 0;
 408 }
 409
 410 static int cirrus_gfx_card_stop_device(struct vm_device * dev) {
 411     PrintDebug("Video: stop device\n");
 412     return 0;
 413 }
 414 */
 415 static struct v3_device_ops dev_ops = {
 416     .free = (int (*)(void *))cirrus_gfx_card_free,
 417 //    .reset = cirrus_gfx_card_reset_device,
 418 //    .start = cirrus_gfx_card_start_device,
 419 //    .stop = cirrus_gfx_card_stop_device,
 420 };
 421
 422 static int cirrus_gfx_card_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg){
 423     struct video_internal * video_state = (struct video_internal *)V3_Malloc(sizeof(struct video_internal));
 424 //    struct vm_device * pci_bus = v3_find_dev(vm, (char *)cfg_data);
 425     struct vm_device * pci_bus = v3_find_dev(vm, v3_cfg_val(cfg, "bus"));
 426     char * dev_id = v3_cfg_val(cfg, "ID");
 427
 428     struct vm_device * dev = v3_add_device(vm, dev_id, &dev_ops, video_state);
 429
 430     if (dev == NULL) {
 431         PrintError("Could not attach device %s\n", dev_id);
 432         return -1;
 433     }
 434
 435     PrintDebug("video: init_device\n");
 436     PrintDebug("Num Pages=%d\n", SIZE_OF_REGION / 4096);
 437
 438     video_state->video_memory_pa = (addr_t)V3_AllocPages(SIZE_OF_REGION / 4096);
 439     video_state->video_memory = V3_VAddr((void *)video_state->video_memory_pa);
 440
 441     memset(video_state->video_memory, 0, SIZE_OF_REGION);
 442
 443
 444     v3_dev_hook_io(dev, 0x3b0, &video_read_port, &video_write_port);
 445     v3_dev_hook_io(dev, 0x3b1, &video_read_port, &video_write_port);
 446     v3_dev_hook_io(dev, 0x3b2, &video_read_port, &video_write_port);
 447     v3_dev_hook_io(dev, 0x3b3, &video_read_port, &video_write_port);
 448     v3_dev_hook_io(dev, 0x3b4, &video_read_port, &video_write_port);
 449     v3_dev_hook_io(dev, 0x3b5, &video_read_port, &video_write_port);
 450     v3_dev_hook_io(dev, 0x3b6, &video_read_port, &video_write_port);
 451     v3_dev_hook_io(dev, 0x3b7, &video_read_port, &video_write_port);
 452     v3_dev_hook_io(dev, 0x3b8, &video_read_port, &video_write_port);
 453     v3_dev_hook_io(dev, 0x3b9, &video_read_port, &video_write_port);
 454     v3_dev_hook_io(dev, 0x3ba, &video_read_port, &video_write_port);
 455     v3_dev_hook_io(dev, 0x3bb, &video_read_port, &video_write_port);
 456     v3_dev_hook_io(dev, 0x3c0, &video_read_port, &video_write_port_store);
 457     v3_dev_hook_io(dev, 0x3c1, &video_read_port, &video_write_port);
 458     v3_dev_hook_io(dev, 0x3c2, &video_read_port, &video_write_port_store);
 459     v3_dev_hook_io(dev, 0x3c3, &video_read_port, &video_write_port);
 460     v3_dev_hook_io(dev, 0x3c4, &video_read_port, &video_write_port_store);
 461     v3_dev_hook_io(dev, 0x3c5, &video_read_port, &video_write_port_3C5);
 462     v3_dev_hook_io(dev, 0x3c6, &video_read_port, &video_write_port_store);
 463     v3_dev_hook_io(dev, 0x3c7, &video_read_port, &video_write_port);
 464     v3_dev_hook_io(dev, 0x3c8, &video_read_port, &video_write_port_store);
 465     v3_dev_hook_io(dev, 0x3c9, &video_read_port, &video_write_port_store);
 466     v3_dev_hook_io(dev, 0x3ca, &video_read_port, &video_write_port);
 467     v3_dev_hook_io(dev, 0x3cb, &video_read_port, &video_write_port);
 468     v3_dev_hook_io(dev, 0x3cc, &video_read_port, &video_write_port);
 469     v3_dev_hook_io(dev, 0x3cd, &video_read_port, &video_write_port);
 470     v3_dev_hook_io(dev, 0x3ce, &video_read_port, &video_write_port_store);
 471     v3_dev_hook_io(dev, 0x3cf, &video_read_port, &video_write_port_3CF);
 472     v3_dev_hook_io(dev, 0x3d0, &video_read_port, &video_write_port);
 473     v3_dev_hook_io(dev, 0x3d1, &video_read_port, &video_write_port);
 474     v3_dev_hook_io(dev, 0x3d2, &video_read_port, &video_write_port);
 475     v3_dev_hook_io(dev, 0x3d3, &video_read_port, &video_write_port);
 476     v3_dev_hook_io(dev, 0x3d4, &video_read_port, &video_write_port_3D4);
 477     v3_dev_hook_io(dev, 0x3d5, &video_read_port, &video_write_port_3D5);
 478     v3_dev_hook_io(dev, 0x3d6, &video_read_port, &video_write_port);
 479     v3_dev_hook_io(dev, 0x3d7, &video_read_port, &video_write_port);
 480     v3_dev_hook_io(dev, 0x3d8, &video_read_port, &video_write_port);
 481     v3_dev_hook_io(dev, 0x3d9, &video_read_port, &video_write_port);
 482     v3_dev_hook_io(dev, 0x3da, &video_read_port_generic, &video_write_port);
 483     v3_dev_hook_io(dev, 0x3db, &video_read_port, &video_write_port);
 484     v3_dev_hook_io(dev, 0x3dc, &video_read_port, &video_write_port);
 485     v3_dev_hook_io(dev, 0x3dd, &video_read_port, &video_write_port);
 486     v3_dev_hook_io(dev, 0x3de, &video_read_port, &video_write_port);
 487     v3_dev_hook_io(dev, 0x3df, &video_read_port, &video_write_port);
 488
 489
 490     PrintDebug("PA of array: %p\n", (void *)video_state->video_memory_pa);
 491
 492
 493 #if PASSTHROUGH
 494     if (v3_hook_write_mem(vm, V3_MEM_CORE_ANY, START_ADDR, END_ADDR, START_ADDR, &video_write_mem, dev) == -1){
 495         PrintDebug("\n\nVideo Hook failed.\n\n");
 496     }
 497 #else
 498     if (v3_hook_write_mem(vm, V3_MEM_CORE_ANY, START_ADDR, END_ADDR, video_memory_pa, &video_write_mem, dev) == -1){
 499         PrintDebug("\n\nVideo Hook failed.\n\n");
 500     }
 501 #endif
 502
 503     PrintDebug("Video: Getting client connection\n");
 504
 505     //video_state->client_fd = get_client_connection(vm);
 506
 507     PrintDebug("Video: Client connection established\n");
 508
 509     video_state->screen_bottom = 25;
 510
 511     video_state->pci_bus = pci_bus;
 512
 513     if (video_state->pci_bus == NULL) {
 514         PrintError("Could not find PCI device\n");
 515         return -1;
 516     } else {
 517         struct v3_pci_bar bars[6];
 518         struct pci_device * pci_dev = NULL;
 519
 520         int i;
 521         for (i = 0; i < 6; i++) {
 522             bars[i].type = PCI_BAR_NONE;
 523         }
 524
 525         bars[0].type = PCI_BAR_MEM32;
 526         bars[0].num_pages = 8192;
 527         bars[0].default_base_addr = 0xf0000000;
 528
 529         bars[0].mem_read = video_read_mem_region;
 530         bars[0].mem_write = video_write_mem_region;
 531
 532         bars[1].type = PCI_BAR_MEM32;
 533         bars[1].num_pages = 1;
 534         bars[1].default_base_addr = 0xf2000000;
 535
 536         bars[1].mem_read = video_read_io_region;
 537         bars[1].mem_write = video_write_io_region;
 538         //-1 Means autoassign
 539         //                                                     Not sure if STD
 540         pci_dev = v3_pci_register_device(video_state->pci_bus, PCI_STD_DEVICE, 0,
 541                                          //or0  1st null could be pci_config_update
 542                                          -1, 0, "CIRRUS_GFX_CARD", bars, NULL, NULL,
 543                                          NULL, dev);
 544
 545         if (pci_dev == NULL) {
 546             PrintError("Failed to register VIDEO %d with PCI\n", i);
 547             return -1;
 548         } else{
 549             PrintDebug("Registering PCI_VIDEO succeeded\n");
 550         }
 551         //Need to set some pci_dev->config_header.vendor_id type variables
 552
 553         pci_dev->config_header.vendor_id = 0x1013;
 554         pci_dev->config_header.device_id = 0x00B8;
 555         pci_dev->config_header.revision = 0x00;
 556
 557         //If we treat video as a VGA device than below is correct
 558         //If treated as a VGA compatible controller, which has mapping
 559         //0xA0000-0xB0000 and I/O addresses 0x3B0-0x3BB than change
 560         //#define from VGA to 0
 561
 562         //pci_dev->config_header.class = 0x00;
 563         //pci_dev->config_header.subclass = 0x01;
 564
 565         pci_dev->config_header.class = 0x03;
 566         pci_dev->config_header.subclass = 0x00;
 567         pci_dev->config_header.prog_if = 0x00;
 568
 569
 570         //We have a subsystem ID, but optional to provide:  1AF4:1100
 571         pci_dev->config_header.subsystem_vendor_id = 0x1AF4;
 572         pci_dev->config_header.subsystem_id = 0x1100;
 573         //pci_dev->config_header.header_type = 0x00;
 574         pci_dev->config_header.command = 0x03;
 575         video_state->pci_dev = pci_dev;
 576     }
 577
 578     PrintDebug("Video: init complete\n");
 579     return 0;
 580 }
 581
 582 device_register("CIRRUS_GFX_CARD", cirrus_gfx_card_init)