hw/pci.c

   1 /*
   2  * QEMU PCI bus manager
   3  *
   4  * Copyright (c) 2004 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 #include "hw.h"
  25 #include "pci.h"
  26 #include "monitor.h"
  27 #include "net.h"
  28 #include "sysemu.h"
  29
  30 //#define DEBUG_PCI
  31
  32 struct PCIBus {
  33     BusState qbus;
  34     int bus_num;
  35     int devfn_min;
  36     pci_set_irq_fn set_irq;
  37     pci_map_irq_fn map_irq;
  38     uint32_t config_reg; /* XXX: suppress */
  39     /* low level pic */
  40     SetIRQFunc *low_set_irq;
  41     qemu_irq *irq_opaque;
  42     PCIDevice *devices[256];
  43     PCIDevice *parent_dev;
  44     PCIBus *next;
  45     /* The bus IRQ state is the logical OR of the connected devices.
  46        Keep a count of the number of devices with raised IRQs.  */
  47     int nirq;
  48     int irq_count[];
  49 };
  50
  51 static void pci_update_mappings(PCIDevice *d);
  52 static void pci_set_irq(void *opaque, int irq_num, int level);
  53
  54 target_phys_addr_t pci_mem_base;
  55 static uint16_t pci_default_sub_vendor_id = PCI_SUBVENDOR_ID_REDHAT_QUMRANET;
  56 static uint16_t pci_default_sub_device_id = PCI_SUBDEVICE_ID_QEMU;
  57 static PCIBus *first_bus;
  58
  59 static void pcibus_save(QEMUFile *f, void *opaque)
  60 {
  61     PCIBus *bus = (PCIBus *)opaque;
  62     int i;
  63
  64     qemu_put_be32(f, bus->nirq);
  65     for (i = 0; i < bus->nirq; i++)
  66         qemu_put_be32(f, bus->irq_count[i]);
  67 }
  68
  69 static int  pcibus_load(QEMUFile *f, void *opaque, int version_id)
  70 {
  71     PCIBus *bus = (PCIBus *)opaque;
  72     int i, nirq;
  73
  74     if (version_id != 1)
  75         return -EINVAL;
  76
  77     nirq = qemu_get_be32(f);
  78     if (bus->nirq != nirq) {
  79         fprintf(stderr, "pcibus_load: nirq mismatch: src=%d dst=%d\n",
  80                 nirq, bus->nirq);
  81         return -EINVAL;
  82     }
  83
  84     for (i = 0; i < nirq; i++)
  85         bus->irq_count[i] = qemu_get_be32(f);
  86
  87     return 0;
  88 }
  89
  90 PCIBus *pci_register_bus(DeviceState *parent, const char *name,
  91                          pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,
  92                          qemu_irq *pic, int devfn_min, int nirq)
  93 {
  94     PCIBus *bus;
  95     static int nbus = 0;
  96
  97     bus = FROM_QBUS(PCIBus, qbus_create(BUS_TYPE_PCI,
  98                                         sizeof(PCIBus) + (nirq * sizeof(int)),
  99                                         parent, name));
 100     bus->set_irq = set_irq;
 101     bus->map_irq = map_irq;
 102     bus->irq_opaque = pic;
 103     bus->devfn_min = devfn_min;
 104     bus->nirq = nirq;
 105     bus->next = first_bus;
 106     first_bus = bus;
 107     register_savevm("PCIBUS", nbus++, 1, pcibus_save, pcibus_load, bus);
 108     return bus;
 109 }
 110
 111 static PCIBus *pci_register_secondary_bus(PCIDevice *dev, pci_map_irq_fn map_irq)
 112 {
 113     PCIBus *bus;
 114     bus = qemu_mallocz(sizeof(PCIBus));
 115     bus->map_irq = map_irq;
 116     bus->parent_dev = dev;
 117     bus->next = dev->bus->next;
 118     dev->bus->next = bus;
 119     return bus;
 120 }
 121
 122 int pci_bus_num(PCIBus *s)
 123 {
 124     return s->bus_num;
 125 }
 126
 127 void pci_device_save(PCIDevice *s, QEMUFile *f)
 128 {
 129     int i;
 130
 131     qemu_put_be32(f, 2); /* PCI device version */
 132     qemu_put_buffer(f, s->config, 256);
 133     for (i = 0; i < 4; i++)
 134         qemu_put_be32(f, s->irq_state[i]);
 135 }
 136
 137 int pci_device_load(PCIDevice *s, QEMUFile *f)
 138 {
 139     uint32_t version_id;
 140     int i;
 141
 142     version_id = qemu_get_be32(f);
 143     if (version_id > 2)
 144         return -EINVAL;
 145     qemu_get_buffer(f, s->config, 256);
 146     pci_update_mappings(s);
 147
 148     if (version_id >= 2)
 149         for (i = 0; i < 4; i ++)
 150             s->irq_state[i] = qemu_get_be32(f);
 151
 152     return 0;
 153 }
 154
 155 static int pci_set_default_subsystem_id(PCIDevice *pci_dev)
 156 {
 157     uint16_t *id;
 158
 159     id = (void*)(&pci_dev->config[PCI_SUBVENDOR_ID]);
 160     id[0] = cpu_to_le16(pci_default_sub_vendor_id);
 161     id[1] = cpu_to_le16(pci_default_sub_device_id);
 162     return 0;
 163 }
 164
 165 /*
 166  * Parse [[<domain>:]<bus>:]<slot>, return -1 on error
 167  */
 168 static int pci_parse_devaddr(const char *addr, int *domp, int *busp, unsigned *slotp)
 169 {
 170     const char *p;
 171     char *e;
 172     unsigned long val;
 173     unsigned long dom = 0, bus = 0;
 174     unsigned slot = 0;
 175
 176     p = addr;
 177     val = strtoul(p, &e, 16);
 178     if (e == p)
 179         return -1;
 180     if (*e == ':') {
 181         bus = val;
 182         p = e + 1;
 183         val = strtoul(p, &e, 16);
 184         if (e == p)
 185             return -1;
 186         if (*e == ':') {
 187             dom = bus;
 188             bus = val;
 189             p = e + 1;
 190             val = strtoul(p, &e, 16);
 191             if (e == p)
 192                 return -1;
 193         }
 194     }
 195
 196     if (dom > 0xffff || bus > 0xff || val > 0x1f)
 197         return -1;
 198
 199     slot = val;
 200
 201     if (*e)
 202         return -1;
 203
 204     /* Note: QEMU doesn't implement domains other than 0 */
 205     if (dom != 0 || pci_find_bus(bus) == NULL)
 206         return -1;
 207
 208     *domp = dom;
 209     *busp = bus;
 210     *slotp = slot;
 211     return 0;
 212 }
 213
 214 int pci_read_devaddr(const char *addr, int *domp, int *busp, unsigned *slotp)
 215 {
 216     char devaddr[32];
 217
 218     if (!get_param_value(devaddr, sizeof(devaddr), "pci_addr", addr))
 219         return -1;
 220
 221     return pci_parse_devaddr(devaddr, domp, busp, slotp);
 222 }
 223
 224 int pci_assign_devaddr(const char *addr, int *domp, int *busp, unsigned *slotp)
 225 {
 226     char devaddr[32];
 227
 228     if (!get_param_value(devaddr, sizeof(devaddr), "pci_addr", addr))
 229         return -1;
 230
 231     if (!strcmp(devaddr, "auto")) {
 232         *domp = *busp = 0;
 233         *slotp = -1;
 234         /* want to support dom/bus auto-assign at some point */
 235         return 0;
 236     }
 237
 238     return pci_parse_devaddr(devaddr, domp, busp, slotp);
 239 }
 240
 241 /* -1 for devfn means auto assign */
 242 static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus,
 243                                          const char *name, int devfn,
 244                                          PCIConfigReadFunc *config_read,
 245                                          PCIConfigWriteFunc *config_write)
 246 {
 247     if (devfn < 0) {
 248         for(devfn = bus->devfn_min ; devfn < 256; devfn += 8) {
 249             if (!bus->devices[devfn])
 250                 goto found;
 251         }
 252         return NULL;
 253     found: ;
 254     }
 255     pci_dev->bus = bus;
 256     pci_dev->devfn = devfn;
 257     pstrcpy(pci_dev->name, sizeof(pci_dev->name), name);
 258     memset(pci_dev->irq_state, 0, sizeof(pci_dev->irq_state));
 259     pci_set_default_subsystem_id(pci_dev);
 260
 261     if (!config_read)
 262         config_read = pci_default_read_config;
 263     if (!config_write)
 264         config_write = pci_default_write_config;
 265     pci_dev->config_read = config_read;
 266     pci_dev->config_write = config_write;
 267     bus->devices[devfn] = pci_dev;
 268     pci_dev->irq = qemu_allocate_irqs(pci_set_irq, pci_dev, 4);
 269     return pci_dev;
 270 }
 271
 272 PCIDevice *pci_register_device(PCIBus *bus, const char *name,
 273                                int instance_size, int devfn,
 274                                PCIConfigReadFunc *config_read,
 275                                PCIConfigWriteFunc *config_write)
 276 {
 277     PCIDevice *pci_dev;
 278
 279     pci_dev = qemu_mallocz(instance_size);
 280     pci_dev = do_pci_register_device(pci_dev, bus, name, devfn,
 281                                      config_read, config_write);
 282     return pci_dev;
 283 }
 284 static target_phys_addr_t pci_to_cpu_addr(target_phys_addr_t addr)
 285 {
 286     return addr + pci_mem_base;
 287 }
 288
 289 static void pci_unregister_io_regions(PCIDevice *pci_dev)
 290 {
 291     PCIIORegion *r;
 292     int i;
 293
 294     for(i = 0; i < PCI_NUM_REGIONS; i++) {
 295         r = &pci_dev->io_regions[i];
 296         if (!r->size || r->addr == -1)
 297             continue;
 298         if (r->type == PCI_ADDRESS_SPACE_IO) {
 299             isa_unassign_ioport(r->addr, r->size);
 300         } else {
 301             cpu_register_physical_memory(pci_to_cpu_addr(r->addr),
 302                                                      r->size,
 303                                                      IO_MEM_UNASSIGNED);
 304         }
 305     }
 306 }
 307
 308 int pci_unregister_device(PCIDevice *pci_dev)
 309 {
 310     int ret = 0;
 311
 312     if (pci_dev->unregister)
 313         ret = pci_dev->unregister(pci_dev);
 314     if (ret)
 315         return ret;
 316
 317     pci_unregister_io_regions(pci_dev);
 318
 319     qemu_free_irqs(pci_dev->irq);
 320     pci_dev->bus->devices[pci_dev->devfn] = NULL;
 321     qdev_free(&pci_dev->qdev);
 322     return 0;
 323 }
 324
 325 void pci_register_io_region(PCIDevice *pci_dev, int region_num,
 326                             uint32_t size, int type,
 327                             PCIMapIORegionFunc *map_func)
 328 {
 329     PCIIORegion *r;
 330     uint32_t addr;
 331
 332     if ((unsigned int)region_num >= PCI_NUM_REGIONS)
 333         return;
 334
 335     if (size & (size-1)) {
 336         fprintf(stderr, "ERROR: PCI region size must be pow2 "
 337                     "type=0x%x, size=0x%x\n", type, size);
 338         exit(1);
 339     }
 340
 341     r = &pci_dev->io_regions[region_num];
 342     r->addr = -1;
 343     r->size = size;
 344     r->type = type;
 345     r->map_func = map_func;
 346     if (region_num == PCI_ROM_SLOT) {
 347         addr = 0x30;
 348     } else {
 349         addr = 0x10 + region_num * 4;
 350     }
 351     *(uint32_t *)(pci_dev->config + addr) = cpu_to_le32(type);
 352 }
 353
 354 static void pci_update_mappings(PCIDevice *d)
 355 {
 356     PCIIORegion *r;
 357     int cmd, i;
 358     uint32_t last_addr, new_addr, config_ofs;
 359
 360     cmd = le16_to_cpu(*(uint16_t *)(d->config + PCI_COMMAND));
 361     for(i = 0; i < PCI_NUM_REGIONS; i++) {
 362         r = &d->io_regions[i];
 363         if (i == PCI_ROM_SLOT) {
 364             config_ofs = 0x30;
 365         } else {
 366             config_ofs = 0x10 + i * 4;
 367         }
 368         if (r->size != 0) {
 369             if (r->type & PCI_ADDRESS_SPACE_IO) {
 370                 if (cmd & PCI_COMMAND_IO) {
 371                     new_addr = le32_to_cpu(*(uint32_t *)(d->config +
 372                                                          config_ofs));
 373                     new_addr = new_addr & ~(r->size - 1);
 374                     last_addr = new_addr + r->size - 1;
 375                     /* NOTE: we have only 64K ioports on PC */
 376                     if (last_addr <= new_addr || new_addr == 0 ||
 377                         last_addr >= 0x10000) {
 378                         new_addr = -1;
 379                     }
 380                 } else {
 381                     new_addr = -1;
 382                 }
 383             } else {
 384                 if (cmd & PCI_COMMAND_MEMORY) {
 385                     new_addr = le32_to_cpu(*(uint32_t *)(d->config +
 386                                                          config_ofs));
 387                     /* the ROM slot has a specific enable bit */
 388                     if (i == PCI_ROM_SLOT && !(new_addr & 1))
 389                         goto no_mem_map;
 390                     new_addr = new_addr & ~(r->size - 1);
 391                     last_addr = new_addr + r->size - 1;
 392                     /* NOTE: we do not support wrapping */
 393                     /* XXX: as we cannot support really dynamic
 394                        mappings, we handle specific values as invalid
 395                        mappings. */
 396                     if (last_addr <= new_addr || new_addr == 0 ||
 397                         last_addr == -1) {
 398                         new_addr = -1;
 399                     }
 400                 } else {
 401                 no_mem_map:
 402                     new_addr = -1;
 403                 }
 404             }
 405             /* now do the real mapping */
 406             if (new_addr != r->addr) {
 407                 if (r->addr != -1) {
 408                     if (r->type & PCI_ADDRESS_SPACE_IO) {
 409                         int class;
 410                         /* NOTE: specific hack for IDE in PC case:
 411                            only one byte must be mapped. */
 412                         class = d->config[0x0a] | (d->config[0x0b] << 8);
 413                         if (class == 0x0101 && r->size == 4) {
 414                             isa_unassign_ioport(r->addr + 2, 1);
 415                         } else {
 416                             isa_unassign_ioport(r->addr, r->size);
 417                         }
 418                     } else {
 419                         cpu_register_physical_memory(pci_to_cpu_addr(r->addr),
 420                                                      r->size,
 421                                                      IO_MEM_UNASSIGNED);
 422                         qemu_unregister_coalesced_mmio(r->addr, r->size);
 423                     }
 424                 }
 425                 r->addr = new_addr;
 426                 if (r->addr != -1) {
 427                     r->map_func(d, i, r->addr, r->size, r->type);
 428                 }
 429             }
 430         }
 431     }
 432 }
 433
 434 uint32_t pci_default_read_config(PCIDevice *d,
 435                                  uint32_t address, int len)
 436 {
 437     uint32_t val;
 438
 439     switch(len) {
 440     default:
 441     case 4:
 442         if (address <= 0xfc) {
 443             val = le32_to_cpu(*(uint32_t *)(d->config + address));
 444             break;
 445         }
 446         /* fall through */
 447     case 2:
 448         if (address <= 0xfe) {
 449             val = le16_to_cpu(*(uint16_t *)(d->config + address));
 450             break;
 451         }
 452         /* fall through */
 453     case 1:
 454         val = d->config[address];
 455         break;
 456     }
 457     return val;
 458 }
 459
 460 void pci_default_write_config(PCIDevice *d,
 461                               uint32_t address, uint32_t val, int len)
 462 {
 463     int can_write, i;
 464     uint32_t end, addr;
 465
 466     if (len == 4 && ((address >= 0x10 && address < 0x10 + 4 * 6) ||
 467                      (address >= 0x30 && address < 0x34))) {
 468         PCIIORegion *r;
 469         int reg;
 470
 471         if ( address >= 0x30 ) {
 472             reg = PCI_ROM_SLOT;
 473         }else{
 474             reg = (address - 0x10) >> 2;
 475         }
 476         r = &d->io_regions[reg];
 477         if (r->size == 0)
 478             goto default_config;
 479         /* compute the stored value */
 480         if (reg == PCI_ROM_SLOT) {
 481             /* keep ROM enable bit */
 482             val &= (~(r->size - 1)) | 1;
 483         } else {
 484             val &= ~(r->size - 1);
 485             val |= r->type;
 486         }
 487         *(uint32_t *)(d->config + address) = cpu_to_le32(val);
 488         pci_update_mappings(d);
 489         return;
 490     }
 491  default_config:
 492     /* not efficient, but simple */
 493     addr = address;
 494     for(i = 0; i < len; i++) {
 495         /* default read/write accesses */
 496         switch(d->config[0x0e]) {
 497         case 0x00:
 498         case 0x80:
 499             switch(addr) {
 500             case 0x00:
 501             case 0x01:
 502             case 0x02:
 503             case 0x03:
 504             case 0x06:
 505             case 0x07:
 506             case 0x08:
 507             case 0x09:
 508             case 0x0a:
 509             case 0x0b:
 510             case 0x0e:
 511             case 0x10 ... 0x27: /* base */
 512             case 0x2c ... 0x2f: /* read-only subsystem ID & vendor ID */
 513             case 0x30 ... 0x33: /* rom */
 514             case 0x3d:
 515                 can_write = 0;
 516                 break;
 517             default:
 518                 can_write = 1;
 519                 break;
 520             }
 521             break;
 522         default:
 523         case 0x01:
 524             switch(addr) {
 525             case 0x00:
 526             case 0x01:
 527             case 0x02:
 528             case 0x03:
 529             case 0x06:
 530             case 0x07:
 531             case 0x08:
 532             case 0x09:
 533             case 0x0a:
 534             case 0x0b:
 535             case 0x0e:
 536             case 0x2c ... 0x2f: /* read-only subsystem ID & vendor ID */
 537             case 0x38 ... 0x3b: /* rom */
 538             case 0x3d:
 539                 can_write = 0;
 540                 break;
 541             default:
 542                 can_write = 1;
 543                 break;
 544             }
 545             break;
 546         }
 547         if (can_write) {
 548             /* Mask out writes to reserved bits in registers */
 549             switch (addr) {
 550             case 0x05:
 551                 val &= ~PCI_COMMAND_RESERVED_MASK_HI;
 552                 break;
 553             case 0x06:
 554                 val &= ~PCI_STATUS_RESERVED_MASK_LO;
 555                 break;
 556             case 0x07:
 557                 val &= ~PCI_STATUS_RESERVED_MASK_HI;
 558                 break;
 559             }
 560             d->config[addr] = val;
 561         }
 562         if (++addr > 0xff)
 563                 break;
 564         val >>= 8;
 565     }
 566
 567     end = address + len;
 568     if (end > PCI_COMMAND && address < (PCI_COMMAND + 2)) {
 569         /* if the command register is modified, we must modify the mappings */
 570         pci_update_mappings(d);
 571     }
 572 }
 573
 574 void pci_data_write(void *opaque, uint32_t addr, uint32_t val, int len)
 575 {
 576     PCIBus *s = opaque;
 577     PCIDevice *pci_dev;
 578     int config_addr, bus_num;
 579
 580 #if defined(DEBUG_PCI) && 0
 581     printf("pci_data_write: addr=%08x val=%08x len=%d\n",
 582            addr, val, len);
 583 #endif
 584     bus_num = (addr >> 16) & 0xff;
 585     while (s && s->bus_num != bus_num)
 586         s = s->next;
 587     if (!s)
 588         return;
 589     pci_dev = s->devices[(addr >> 8) & 0xff];
 590     if (!pci_dev)
 591         return;
 592     config_addr = addr & 0xff;
 593 #if defined(DEBUG_PCI)
 594     printf("pci_config_write: %s: addr=%02x val=%08x len=%d\n",
 595            pci_dev->name, config_addr, val, len);
 596 #endif
 597     pci_dev->config_write(pci_dev, config_addr, val, len);
 598 }
 599
 600 uint32_t pci_data_read(void *opaque, uint32_t addr, int len)
 601 {
 602     PCIBus *s = opaque;
 603     PCIDevice *pci_dev;
 604     int config_addr, bus_num;
 605     uint32_t val;
 606
 607     bus_num = (addr >> 16) & 0xff;
 608     while (s && s->bus_num != bus_num)
 609         s= s->next;
 610     if (!s)
 611         goto fail;
 612     pci_dev = s->devices[(addr >> 8) & 0xff];
 613     if (!pci_dev) {
 614     fail:
 615         switch(len) {
 616         case 1:
 617             val = 0xff;
 618             break;
 619         case 2:
 620             val = 0xffff;
 621             break;
 622         default:
 623         case 4:
 624             val = 0xffffffff;
 625             break;
 626         }
 627         goto the_end;
 628     }
 629     config_addr = addr & 0xff;
 630     val = pci_dev->config_read(pci_dev, config_addr, len);
 631 #if defined(DEBUG_PCI)
 632     printf("pci_config_read: %s: addr=%02x val=%08x len=%d\n",
 633            pci_dev->name, config_addr, val, len);
 634 #endif
 635  the_end:
 636 #if defined(DEBUG_PCI) && 0
 637     printf("pci_data_read: addr=%08x val=%08x len=%d\n",
 638            addr, val, len);
 639 #endif
 640     return val;
 641 }
 642
 643 /***********************************************************/
 644 /* generic PCI irq support */
 645
 646 /* 0 <= irq_num <= 3. level must be 0 or 1 */
 647 static void pci_set_irq(void *opaque, int irq_num, int level)
 648 {
 649     PCIDevice *pci_dev = (PCIDevice *)opaque;
 650     PCIBus *bus;
 651     int change;
 652
 653     change = level - pci_dev->irq_state[irq_num];
 654     if (!change)
 655         return;
 656
 657     pci_dev->irq_state[irq_num] = level;
 658     for (;;) {
 659         bus = pci_dev->bus;
 660         irq_num = bus->map_irq(pci_dev, irq_num);
 661         if (bus->set_irq)
 662             break;
 663         pci_dev = bus->parent_dev;
 664     }
 665     bus->irq_count[irq_num] += change;
 666     bus->set_irq(bus->irq_opaque, irq_num, bus->irq_count[irq_num] != 0);
 667 }
 668
 669 /***********************************************************/
 670 /* monitor info on PCI */
 671
 672 typedef struct {
 673     uint16_t class;
 674     const char *desc;
 675 } pci_class_desc;
 676
 677 static const pci_class_desc pci_class_descriptions[] =
 678 {
 679     { 0x0100, "SCSI controller"},
 680     { 0x0101, "IDE controller"},
 681     { 0x0102, "Floppy controller"},
 682     { 0x0103, "IPI controller"},
 683     { 0x0104, "RAID controller"},
 684     { 0x0106, "SATA controller"},
 685     { 0x0107, "SAS controller"},
 686     { 0x0180, "Storage controller"},
 687     { 0x0200, "Ethernet controller"},
 688     { 0x0201, "Token Ring controller"},
 689     { 0x0202, "FDDI controller"},
 690     { 0x0203, "ATM controller"},
 691     { 0x0280, "Network controller"},
 692     { 0x0300, "VGA controller"},
 693     { 0x0301, "XGA controller"},
 694     { 0x0302, "3D controller"},
 695     { 0x0380, "Display controller"},
 696     { 0x0400, "Video controller"},
 697     { 0x0401, "Audio controller"},
 698     { 0x0402, "Phone"},
 699     { 0x0480, "Multimedia controller"},
 700     { 0x0500, "RAM controller"},
 701     { 0x0501, "Flash controller"},
 702     { 0x0580, "Memory controller"},
 703     { 0x0600, "Host bridge"},
 704     { 0x0601, "ISA bridge"},
 705     { 0x0602, "EISA bridge"},
 706     { 0x0603, "MC bridge"},
 707     { 0x0604, "PCI bridge"},
 708     { 0x0605, "PCMCIA bridge"},
 709     { 0x0606, "NUBUS bridge"},
 710     { 0x0607, "CARDBUS bridge"},
 711     { 0x0608, "RACEWAY bridge"},
 712     { 0x0680, "Bridge"},
 713     { 0x0c03, "USB controller"},
 714     { 0, NULL}
 715 };
 716
 717 static void pci_info_device(PCIDevice *d)
 718 {
 719     Monitor *mon = cur_mon;
 720     int i, class;
 721     PCIIORegion *r;
 722     const pci_class_desc *desc;
 723
 724     monitor_printf(mon, "  Bus %2d, device %3d, function %d:\n",
 725                    d->bus->bus_num, d->devfn >> 3, d->devfn & 7);
 726     class = le16_to_cpu(*((uint16_t *)(d->config + PCI_CLASS_DEVICE)));
 727     monitor_printf(mon, "    ");
 728     desc = pci_class_descriptions;
 729     while (desc->desc && class != desc->class)
 730         desc++;
 731     if (desc->desc) {
 732         monitor_printf(mon, "%s", desc->desc);
 733     } else {
 734         monitor_printf(mon, "Class %04x", class);
 735     }
 736     monitor_printf(mon, ": PCI device %04x:%04x\n",
 737            le16_to_cpu(*((uint16_t *)(d->config + PCI_VENDOR_ID))),
 738            le16_to_cpu(*((uint16_t *)(d->config + PCI_DEVICE_ID))));
 739
 740     if (d->config[PCI_INTERRUPT_PIN] != 0) {
 741         monitor_printf(mon, "      IRQ %d.\n",
 742                        d->config[PCI_INTERRUPT_LINE]);
 743     }
 744     if (class == 0x0604) {
 745         monitor_printf(mon, "      BUS %d.\n", d->config[0x19]);
 746     }
 747     for(i = 0;i < PCI_NUM_REGIONS; i++) {
 748         r = &d->io_regions[i];
 749         if (r->size != 0) {
 750             monitor_printf(mon, "      BAR%d: ", i);
 751             if (r->type & PCI_ADDRESS_SPACE_IO) {
 752                 monitor_printf(mon, "I/O at 0x%04x [0x%04x].\n",
 753                                r->addr, r->addr + r->size - 1);
 754             } else {
 755                 monitor_printf(mon, "32 bit memory at 0x%08x [0x%08x].\n",
 756                                r->addr, r->addr + r->size - 1);
 757             }
 758         }
 759     }
 760     if (class == 0x0604 && d->config[0x19] != 0) {
 761         pci_for_each_device(d->config[0x19], pci_info_device);
 762     }
 763 }
 764
 765 void pci_for_each_device(int bus_num, void (*fn)(PCIDevice *d))
 766 {
 767     PCIBus *bus = first_bus;
 768     PCIDevice *d;
 769     int devfn;
 770
 771     while (bus && bus->bus_num != bus_num)
 772         bus = bus->next;
 773     if (bus) {
 774         for(devfn = 0; devfn < 256; devfn++) {
 775             d = bus->devices[devfn];
 776             if (d)
 777                 fn(d);
 778         }
 779     }
 780 }
 781
 782 void pci_info(Monitor *mon)
 783 {
 784     pci_for_each_device(0, pci_info_device);
 785 }
 786
 787 static const char * const pci_nic_models[] = {
 788     "ne2k_pci",
 789     "i82551",
 790     "i82557b",
 791     "i82559er",
 792     "rtl8139",
 793     "e1000",
 794     "pcnet",
 795     "virtio",
 796     NULL
 797 };
 798
 799 static const char * const pci_nic_names[] = {
 800     "ne2k_pci",
 801     "i82551",
 802     "i82557b",
 803     "i82559er",
 804     "rtl8139",
 805     "e1000",
 806     "pcnet",
 807     "virtio-net-pci",
 808     NULL
 809 };
 810
 811 /* Initialize a PCI NIC.  */
 812 PCIDevice *pci_nic_init(PCIBus *bus, NICInfo *nd, int devfn,
 813                   const char *default_model)
 814 {
 815     DeviceState *dev;
 816     int i;
 817
 818     qemu_check_nic_model_list(nd, pci_nic_models, default_model);
 819
 820     for (i = 0; pci_nic_models[i]; i++) {
 821         if (strcmp(nd->model, pci_nic_models[i]) == 0) {
 822             dev = qdev_create(&bus->qbus, pci_nic_names[i]);
 823             qdev_set_prop_int(dev, "devfn", devfn);
 824             qdev_set_netdev(dev, nd);
 825             qdev_init(dev);
 826             nd->private = dev;
 827             return (PCIDevice *)dev;
 828         }
 829     }
 830
 831     return NULL;
 832 }
 833
 834 typedef struct {
 835     PCIDevice dev;
 836     PCIBus *bus;
 837 } PCIBridge;
 838
 839 static void pci_bridge_write_config(PCIDevice *d,
 840                              uint32_t address, uint32_t val, int len)
 841 {
 842     PCIBridge *s = (PCIBridge *)d;
 843
 844     if (address == 0x19 || (address == 0x18 && len > 1)) {
 845         if (address == 0x19)
 846             s->bus->bus_num = val & 0xff;
 847         else
 848             s->bus->bus_num = (val >> 8) & 0xff;
 849 #if defined(DEBUG_PCI)
 850         printf ("pci-bridge: %s: Assigned bus %d\n", d->name, s->bus->bus_num);
 851 #endif
 852     }
 853     pci_default_write_config(d, address, val, len);
 854 }
 855
 856 PCIBus *pci_find_bus(int bus_num)
 857 {
 858     PCIBus *bus = first_bus;
 859
 860     while (bus && bus->bus_num != bus_num)
 861         bus = bus->next;
 862
 863     return bus;
 864 }
 865
 866 PCIDevice *pci_find_device(int bus_num, int slot, int function)
 867 {
 868     PCIBus *bus = pci_find_bus(bus_num);
 869
 870     if (!bus)
 871         return NULL;
 872
 873     return bus->devices[PCI_DEVFN(slot, function)];
 874 }
 875
 876 PCIBus *pci_bridge_init(PCIBus *bus, int devfn, uint16_t vid, uint16_t did,
 877                         pci_map_irq_fn map_irq, const char *name)
 878 {
 879     PCIBridge *s;
 880     s = (PCIBridge *)pci_register_device(bus, name, sizeof(PCIBridge),
 881                                          devfn, NULL, pci_bridge_write_config);
 882
 883     pci_config_set_vendor_id(s->dev.config, vid);
 884     pci_config_set_device_id(s->dev.config, did);
 885
 886     s->dev.config[0x04] = 0x06; // command = bus master, pci mem
 887     s->dev.config[0x05] = 0x00;
 888     s->dev.config[0x06] = 0xa0; // status = fast back-to-back, 66MHz, no error
 889     s->dev.config[0x07] = 0x00; // status = fast devsel
 890     s->dev.config[0x08] = 0x00; // revision
 891     s->dev.config[0x09] = 0x00; // programming i/f
 892     pci_config_set_class(s->dev.config, PCI_CLASS_BRIDGE_PCI);
 893     s->dev.config[0x0D] = 0x10; // latency_timer
 894     s->dev.config[PCI_HEADER_TYPE] =
 895         PCI_HEADER_TYPE_MULTI_FUNCTION | PCI_HEADER_TYPE_BRIDGE; // header_type
 896     s->dev.config[0x1E] = 0xa0; // secondary status
 897
 898     s->bus = pci_register_secondary_bus(&s->dev, map_irq);
 899     return s->bus;
 900 }
 901
 902 typedef struct {
 903     DeviceInfo qdev;
 904     pci_qdev_initfn init;
 905 } PCIDeviceInfo;
 906
 907 static void pci_qdev_init(DeviceState *qdev, DeviceInfo *base)
 908 {
 909     PCIDevice *pci_dev = (PCIDevice *)qdev;
 910     PCIDeviceInfo *info = container_of(base, PCIDeviceInfo, qdev);
 911     PCIBus *bus;
 912     int devfn;
 913
 914     bus = FROM_QBUS(PCIBus, qdev_get_parent_bus(qdev));
 915     devfn = qdev_get_prop_int(qdev, "devfn", -1);
 916     pci_dev = do_pci_register_device(pci_dev, bus, "FIXME", devfn,
 917                                      NULL, NULL);//FIXME:config_read, config_write);
 918     assert(pci_dev);
 919     info->init(pci_dev);
 920 }
 921
 922 void pci_qdev_register(const char *name, int size, pci_qdev_initfn init)
 923 {
 924     PCIDeviceInfo *info;
 925
 926     info = qemu_mallocz(sizeof(*info));
 927     info->qdev.name = qemu_strdup(name);
 928     info->qdev.size = size;
 929     info->init = init;
 930     info->qdev.init = pci_qdev_init;
 931     info->qdev.bus_type = BUS_TYPE_PCI;
 932
 933     qdev_register(&info->qdev);
 934 }
 935
 936 PCIDevice *pci_create_simple(PCIBus *bus, int devfn, const char *name)
 937 {
 938     DeviceState *dev;
 939
 940     dev = qdev_create(&bus->qbus, name);
 941     qdev_set_prop_int(dev, "devfn", devfn);
 942     qdev_init(dev);
 943
 944     return (PCIDevice *)dev;
 945 }