palacios/src/geekos/vm.c

   1 #include <geekos/vmm_stubs.h>
   2 #include <palacios/vmm.h>
   3 #include <geekos/debug.h>
   4 #include <geekos/serial.h>
   5 #include <geekos/vm.h>
   6 #include <geekos/screen.h>
   7
   8 #include <devices/generic.h>
   9 #include <devices/nvram.h>
  10 #include <devices/timer.h>
  11 #include <devices/simple_pic.h>
  12 #include <devices/8259a.h>
  13 #include <devices/8254.h>
  14 #include <devices/keyboard.h>
  15 #include <devices/serial.h>
  16
  17 #include <palacios/vmm_intr.h>
  18 #include <palacios/vmm_dev_mgr.h>
  19 #include <palacios/vmm_time.h>
  20
  21 #define SPEAKER_PORT 0x61
  22
  23 static inline void VM_Out_Byte(ushort_t port, uchar_t value)
  24 {
  25     __asm__ __volatile__ (
  26         "outb %b0, %w1"
  27         :
  28         : "a" (value), "Nd" (port)
  29     );
  30 }
  31
  32 /*
  33  * Read a byte from an I/O port.
  34  */
  35 static inline uchar_t VM_In_Byte(ushort_t port)
  36 {
  37     uchar_t value;
  38
  39     __asm__ __volatile__ (
  40         "inb %w1, %b0"
  41         : "=a" (value)
  42         : "Nd" (port)
  43     );
  44
  45     return value;
  46 }
  47
  48
  49
  50
  51 int IO_Read(ushort_t port, void * dst, uint_t length, void * priv_data) {
  52
  53   if (length != 1) {
  54     return 0;
  55   }
  56
  57   *(uchar_t*)dst = VM_In_Byte(port);
  58   return 1;
  59 }
  60
  61
  62
  63 int IO_Write(ushort_t port, void * src, uint_t length, void * priv_data) {
  64
  65   if (length != 1) {
  66     return 0;
  67   }
  68
  69   VM_Out_Byte(port, *(uchar_t *)src);
  70
  71   return 1;
  72 }
  73
  74
  75 int IO_Read_to_Serial(ushort_t port, void * dst, uint_t length, void * priv_data) {
  76   PrintBoth("Input from Guest on port %d (0x%x) Length=%d\n", port, port, length);
  77
  78   return 0;
  79 }
  80
  81
  82 char * bochs_debug_buf = NULL;
  83 int bochs_debug_offset = 0;
  84
  85 char * bochs_info_buf = NULL;
  86 int bochs_info_offset = 0;
  87
  88
  89 int IO_BOCHS_debug(ushort_t port, void * src, uint_t length, void * priv_data) {
  90   if (!bochs_debug_buf) {
  91     bochs_debug_buf = (char*)Malloc(1024);
  92   }
  93
  94   bochs_debug_buf[bochs_debug_offset++] = *(char*)src;
  95
  96   if ((*(char*)src == 0xa) ||  (bochs_debug_offset == 1023)) {
  97     SerialPrint("BOCHSDEBUG>%s", bochs_debug_buf);
  98     memset(bochs_debug_buf, 0, 1024);
  99     bochs_debug_offset = 0;
 100   }
 101
 102   return length;
 103 }
 104
 105 int IO_BOCHS_info(ushort_t port, void * src, uint_t length, void * priv_data) {
 106   if (!bochs_info_buf) {
 107     bochs_info_buf = (char*)Malloc(1024);
 108   }
 109
 110   bochs_info_buf[bochs_info_offset++] = *(char*)src;
 111
 112   if ((*(char*)src == 0xa) ||  (bochs_info_offset == 1023)) {
 113     SerialPrint("BOCHSINFO>%s", bochs_info_buf);
 114     memset(bochs_info_buf, 0, 1024);
 115     bochs_info_offset = 0;
 116   }
 117
 118   return length;
 119 }
 120
 121
 122 int IO_Write_to_Serial(ushort_t port, void * src, uint_t length, void * priv_data) {
 123  SerialPrint("Output from Guest on port %d (0x%x) Length=%d\n", port, port, length);
 124   switch (length) {
 125
 126   case 1:
 127     SerialPrint(">0x%.2x\n", *(char*)src);
 128     break;
 129   case 2:
 130     SerialPrint(">0x%.4x\n", *(ushort_t*)src);
 131     break;
 132   case 4:
 133     SerialPrint(">0x%.8x\n", *(uint_t*)src);
 134     break;
 135   default:
 136     break;
 137   }
 138
 139   //  SerialMemDump(src, length);
 140   return length;
 141 }
 142
 143
 144
 145 void BuzzVM()
 146 {
 147   int x;
 148   int j;
 149   unsigned char init;
 150
 151 #if 0
 152   __asm__ __volatile__ (
 153     "popf"
 154     );
 155
 156 #endif
 157
 158   PrintBoth("Starting To Buzz\n");
 159
 160   init=VM_In_Byte(SPEAKER_PORT);
 161
 162   while (1) {
 163     VM_Out_Byte(SPEAKER_PORT, init|0x2);
 164     for (j=0;j<1000000;j++) {
 165       x+=j;
 166     }
 167     VM_Out_Byte(SPEAKER_PORT, init);
 168     for (j=0;j<1000000;j++) {
 169       x+=j;
 170     }
 171   }
 172 }
 173
 174
 175
 176 int passthrough_mem_read(addr_t guest_addr, void * dst, uint_t length, void * priv_data) {
 177   memcpy(dst, (void*)guest_addr, length);
 178   return length;
 179 }
 180
 181 int passthrough_mem_write(addr_t guest_addr, void * src, uint_t length, void * priv_data) {
 182   memcpy((void*)guest_addr, src, length);
 183   return length;
 184 }
 185
 186
 187
 188 /* We need a configuration mechanism, so we can wrap this completely inside the VMM code,
 189  * with no pollution into the HOST OS
 190  */
 191
 192 int RunVMM(struct Boot_Info * bootInfo) {
 193
 194     struct vmm_os_hooks os_hooks;
 195     struct vmm_ctrl_ops vmm_ops;
 196     struct guest_info vm_info;
 197     addr_t rsp;
 198     addr_t rip;
 199
 200
 201
 202     memset(&os_hooks, 0, sizeof(struct vmm_os_hooks));
 203     memset(&vmm_ops, 0, sizeof(struct vmm_ctrl_ops));
 204     memset(&vm_info, 0, sizeof(struct guest_info));
 205
 206     os_hooks.print_debug = &SerialPrint;
 207     os_hooks.print_info = &Print;
 208     os_hooks.print_trace = &SerialPrint;
 209     os_hooks.allocate_pages = &Allocate_VMM_Pages;
 210     os_hooks.free_page = &Free_VMM_Page;
 211     os_hooks.malloc = &VMM_Malloc;
 212     os_hooks.free = &VMM_Free;
 213     os_hooks.vaddr_to_paddr = &Identity;
 214     os_hooks.paddr_to_vaddr = &Identity;
 215     os_hooks.hook_interrupt = &hook_irq_stub;
 216     os_hooks.ack_irq = &ack_irq;
 217     os_hooks.get_cpu_khz = &get_cpu_khz;
 218
 219     Init_VMM(&os_hooks, &vmm_ops);
 220
 221
 222     /* MOVE THIS TO AN INIT GUEST ROUTINE */
 223
 224
 225     v3_init_time(&(vm_info.time_state));
 226     init_shadow_map(&(vm_info.mem_map));
 227
 228     if ((vmm_ops).has_nested_paging()) {
 229       vm_info.shdw_pg_mode = NESTED_PAGING;
 230     } else {
 231       init_shadow_page_state(&(vm_info.shdw_pg_state));
 232       vm_info.shdw_pg_mode = SHADOW_PAGING;
 233     }
 234
 235     vm_info.cpu_mode = REAL;
 236     vm_info.mem_mode = PHYSICAL_MEM;
 237
 238     //init_irq_map(&(vm_info.irq_map));
 239     init_vmm_io_map(&(vm_info.io_map));
 240     init_interrupt_state(&vm_info);
 241
 242     dev_mgr_init(&(vm_info.dev_mgr));
 243     /* ** */
 244
 245     if (0) {
 246
 247       //    add_shared_mem_range(&(vm_info.mem_layout), 0, 0x800000, 0x10000);
 248       //    add_shared_mem_range(&(vm_info.mem_layout), 0, 0x1000000, 0);
 249
 250       rip = (ulong_t)(void*)&BuzzVM;
 251       //  rip -= 0x10000;
 252       //    rip = (addr_t)(void*)&exit_test;
 253       //  rip -= 0x2000;
 254       vm_info.rip = rip;
 255       rsp = (addr_t)Alloc_Page();
 256
 257       vm_info.vm_regs.rsp = (rsp +4092 );// - 0x2000;
 258
 259
 260     } else if (0) {
 261       //add_shared_mem_range(&(vm_info.mem_layout), 0x0, 0x1000, 0x100000);
 262       //      add_shared_mem_range(&(vm_info.mem_layout), 0x0, 0x100000, 0x0);
 263
 264       /*
 265         shadow_region_t *ent = Malloc(sizeof(shadow_region_t));;
 266         init_shadow_region_physical(ent,0,0x100000,GUEST_REGION_PHYSICAL_MEMORY,
 267         0x100000, HOST_REGION_PHYSICAL_MEMORY);
 268         add_shadow_region(&(vm_info.mem_map),ent);
 269       */
 270
 271       add_shadow_region_passthrough(&vm_info, 0x0, 0x100000, 0x100000);
 272
 273       hook_io_port(&(vm_info.io_map), 0x61, &IO_Read, &IO_Write, NULL);
 274       hook_io_port(&(vm_info.io_map), 0x05, &IO_Read, &IO_Write_to_Serial, NULL);
 275
 276       /*
 277         vm_info.cr0 = 0;
 278         vm_info.cs.base=0xf000;
 279         vm_info.cs.limit=0xffff;
 280       */
 281       //vm_info.rip = 0xfff0;
 282
 283       vm_info.rip = 0;
 284       vm_info.vm_regs.rsp = 0x0;
 285     } else {
 286       int i;
 287       void * region_start;
 288
 289       extern char _binary_vm_kernel_start;
 290       PrintBoth(" Guest Load Addr: 0x%x\n", &_binary_vm_kernel_start);
 291
 292       struct guest_mem_layout * layout = (struct guest_mem_layout *)&_binary_vm_kernel_start;
 293
 294       //     SerialPrint("Guest Mem Dump at 0x%x\n", 0x100000);
 295       //SerialMemDump((unsigned char *)(0x100000), 261 * 1024);
 296       if (layout->magic != MAGIC_CODE) {
 297
 298         PrintBoth("Layout Magic Mismatch (0x%x)\n", layout->magic);
 299         return -1;
 300       }
 301
 302       PrintBoth("%d layout regions\n", layout->num_regions);
 303
 304       region_start = (void *)&(layout->regions[layout->num_regions]);
 305
 306       PrintBoth("region start = 0x%x\n", region_start);
 307
 308       for (i = 0; i < layout->num_regions; i++) {
 309         struct layout_region * reg = &(layout->regions[i]);
 310         uint_t num_pages = (reg->length / PAGE_SIZE) + ((reg->length % PAGE_SIZE) ? 1 : 0);
 311         void * guest_mem = Allocate_VMM_Pages(num_pages);
 312
 313         PrintBoth("Layout Region %d bytes\n", reg->length);
 314         memcpy(guest_mem, region_start, reg->length);
 315
 316         SerialMemDump((unsigned char *)(guest_mem), 16);
 317
 318         add_shadow_region_passthrough(&vm_info, reg->final_addr, reg->final_addr + (num_pages * PAGE_SIZE), (addr_t)guest_mem);
 319
 320         PrintBoth("Adding Shadow Region (0x%x-0x%x) -> 0x%x\n", reg->final_addr, reg->final_addr + (num_pages * PAGE_SIZE), guest_mem);
 321
 322         region_start += reg->length;
 323       }
 324
 325       //
 326       add_shadow_region_passthrough(&vm_info, 0x0, 0xa0000, (addr_t)Allocate_VMM_Pages(160));
 327
 328       add_shadow_region_passthrough(&vm_info, 0xa0000, 0xc0000, 0xa0000);
 329       //hook_guest_mem(&vm_info, 0xa0000, 0xc0000, passthrough_mem_read, passthrough_mem_write, NULL);
 330
 331
 332       // TEMP
 333       //add_shadow_region_passthrough(&vm_info, 0xc0000, 0xc8000, 0xc0000);
 334
 335       if (1) {
 336         add_shadow_region_passthrough(&vm_info, 0xc7000, 0xc8000, (addr_t)Allocate_VMM_Pages(1));
 337         if (add_shadow_region_passthrough(&vm_info, 0xc8000, 0xf0000, (addr_t)Allocate_VMM_Pages(40)) == -1) {
 338           PrintBoth("Error adding shadow region\n");
 339         }
 340       } else {
 341         add_shadow_region_passthrough(&vm_info, 0xc0000, 0xc8000, 0xc0000);
 342         add_shadow_region_passthrough(&vm_info, 0xc8000, 0xf0000, 0xc8000);
 343       }
 344
 345
 346       //add_shadow_region_passthrough(&vm_info, 0x100000, 0x2000000, (addr_t)Allocate_VMM_Pages(8192));
 347       add_shadow_region_passthrough(&vm_info, 0x100000, 0x1000000, (addr_t)Allocate_VMM_Pages(4096));
 348
 349       // test - give linux accesss to PCI space - PAD
 350       add_shadow_region_passthrough(&vm_info, 0xc0000000,0xffffffff,0xc0000000);
 351
 352
 353       print_shadow_map(&(vm_info.mem_map));
 354
 355       hook_io_port(&(vm_info.io_map), 0x61, &IO_Read, &IO_Write, NULL);
 356       //hook_io_port(&(vm_info.io_map), 0x05, &IO_Read, &IO_Write_to_Serial, NULL);
 357
 358
 359       hook_io_port(&(vm_info.io_map), 0x400, &IO_Read, &IO_Write_to_Serial, NULL);
 360       hook_io_port(&(vm_info.io_map), 0x401, &IO_Read, &IO_Write_to_Serial, NULL);
 361       hook_io_port(&(vm_info.io_map), 0x402, &IO_Read, &IO_BOCHS_info, NULL);
 362       hook_io_port(&(vm_info.io_map), 0x403, &IO_Read, &IO_BOCHS_debug, NULL);
 363
 364       {
 365
 366         struct vm_device * nvram = create_nvram();
 367         //struct vm_device * timer = create_timer();
 368         struct vm_device * pic = create_pic();
 369         struct vm_device * keyboard = create_keyboard();
 370         struct vm_device * pit = create_pit();
 371         //struct vm_device * serial = create_serial();
 372
 373
 374 #define GENERIC 1
 375
 376 #if GENERIC
 377         generic_port_range_type range[] = {
 378 #if 0
 379           {0x00, 0x07, GENERIC_PRINT_AND_IGNORE},   // DMA 1 channels 0,1,2,3 (address, counter)
 380           {0xc0, 0xc7, GENERIC_PRINT_AND_
 381 IGNORE},   // DMA 2 channels 4,5,6,7 (address, counter)
 382           {0x87, 0x87, GENERIC_PRINT_AND_IGNORE},   // DMA 1 channel 0 page register
 383           {0x83, 0x83, GENERIC_PRINT_AND_IGNORE},   // DMA 1 channel 1 page register
 384           {0x81, 0x81, GENERIC_PRINT_AND_IGNORE},   // DMA 1 channel 2 page register
 385           {0x82, 0x82, GENERIC_PRINT_AND_IGNORE},   // DMA 1 channel 3 page register
 386           {0x8f, 0x8f, GENERIC_PRINT_AND_IGNORE},   // DMA 2 channel 4 page register
 387           {0x8b, 0x8b, GENERIC_PRINT_AND_IGNORE},   // DMA 2 channel 5 page register
 388           {0x89, 0x89, GENERIC_PRINT_AND_IGNORE},   // DMA 2 channel 6 page register
 389           {0x8a, 0x8a, GENERIC_PRINT_AND_IGNORE},   // DMA 2 channel 7 page register
 390           {0x08, 0x0f, GENERIC_PRINT_AND_IGNORE},   // DMA 1 misc registers (csr, req, smask,mode,clearff,reset,enable,mmask)
 391           {0xd0, 0xde, GENERIC_PRINT_AND_IGNORE},   // DMA 2 misc registers
 392 #endif
 393
 394
 395           {0x3f8, 0x3f8+7, GENERIC_PRINT_AND_IGNORE},      // COM 1
 396           {0x2f8, 0x2f8+7, GENERIC_PRINT_AND_IGNORE},      // COM 2
 397           {0x3e8, 0x3e8+7, GENERIC_PRINT_AND_IGNORE},      // COM 3
 398           {0x2e8, 0x2e8+7, GENERIC_PRINT_AND_IGNORE},      // COM 4
 399
 400 #if 0
 401             {0x170, 0x178, GENERIC_PRINT_AND_PASSTHROUGH}, // IDE 1
 402             {0x376, 0x377, GENERIC_PRINT_AND_PASSTHROUGH}, // IDE 1
 403             {0x1f0, 0x1f8, GENERIC_PRINT_AND_PASSTHROUGH}, // IDE 0
 404             {0x3f6, 0x3f7, GENERIC_PRINT_AND_PASSTHROUGH}, // IDE 0
 405 #endif
 406
 407
 408 #if 0
 409           {0x3f0, 0x3f2, GENERIC_PRINT_AND_IGNORE}, // Primary floppy controller (base,statusa/statusb,DOR)
 410           {0x3f4, 0x3f5, GENERIC_PRINT_AND_IGNORE}, // Primary floppy controller (mainstat/datarate,data)
 411           {0x3f7, 0x3f7, GENERIC_PRINT_AND_IGNORE}, // Primary floppy controller (DIR)
 412           {0x370, 0x372, GENERIC_PRINT_AND_IGNORE}, // Secondary floppy controller (base,statusa/statusb,DOR)
 413           {0x374, 0x375, GENERIC_PRINT_AND_IGNORE}, // Secondary floppy controller (mainstat/datarate,data)
 414           {0x377, 0x377, GENERIC_PRINT_AND_IGNORE}, // Secondary floppy controller (DIR)
 415
 416 #endif
 417
 418           //      {0x378, 0x400, GENERIC_PRINT_AND_IGNORE}
 419
 420           {0,0,0},  // sentinal - must be last
 421
 422         };
 423
 424
 425         struct vm_device * generic = create_generic(range, NULL, NULL);
 426
 427 #endif
 428
 429         attach_device(&(vm_info), nvram);
 430         //attach_device(&(vm_info), timer);
 431         attach_device(&(vm_info), pic);
 432         attach_device(&(vm_info), pit);
 433         attach_device(&(vm_info), keyboard);
 434         // attach_device(&(vm_info), serial);
 435
 436
 437 #if GENERIC
 438         // Important that this be attached last!
 439         attach_device(&(vm_info), generic);
 440
 441 #endif
 442
 443         PrintDebugDevMgr(&(vm_info.dev_mgr));
 444       }
 445
 446       // give keyboard interrupts to vm
 447       // no longer needed since we have a keyboard device
 448       //hook_irq(&vm_info, 1);
 449
 450 #if 1
 451       // give floppy controller to vm
 452       hook_irq(&vm_info, 6);
 453 #endif
 454
 455       //primary ide
 456       hook_irq(&vm_info, 14);
 457
 458       // secondary ide
 459       hook_irq(&vm_info, 15);
 460
 461
 462
 463       vm_info.rip = 0xfff0;
 464       vm_info.vm_regs.rsp = 0x0;
 465     }
 466
 467
 468     PrintBoth("Initializing Guest (eip=0x%.8x) (esp=0x%.8x)\n", (uint_t)vm_info.rip,(uint_t)vm_info.vm_regs.rsp);
 469     (vmm_ops).init_guest(&vm_info);
 470     PrintBoth("Starting Guest\n");
 471     //Clear_Screen();
 472     (vmm_ops).start_guest(&vm_info);
 473
 474     return 0;
 475 }