hw/qdev-properties.c

   1 #include "sysemu.h"
   2 #include "net.h"
   3 #include "qdev.h"
   4
   5 void *qdev_get_prop_ptr(DeviceState *dev, Property *prop)
   6 {
   7     void *ptr = dev;
   8     ptr += prop->offset;
   9     return ptr;
  10 }
  11
  12 /* --- 8bit integer --- */
  13
  14 static int parse_uint8(DeviceState *dev, Property *prop, const char *str)
  15 {
  16     uint8_t *ptr = qdev_get_prop_ptr(dev, prop);
  17     const char *fmt;
  18
  19     /* accept both hex and decimal */
  20     fmt = strncasecmp(str, "0x",2) == 0 ? "%" PRIx8 : "%" PRIu8;
  21     if (sscanf(str, fmt, ptr) != 1)
  22         return -1;
  23     return 0;
  24 }
  25
  26 static int print_uint8(DeviceState *dev, Property *prop, char *dest, size_t len)
  27 {
  28     uint8_t *ptr = qdev_get_prop_ptr(dev, prop);
  29     return snprintf(dest, len, "%" PRIu8, *ptr);
  30 }
  31
  32 PropertyInfo qdev_prop_uint8 = {
  33     .name  = "uint8",
  34     .type  = PROP_TYPE_UINT8,
  35     .size  = sizeof(uint8_t),
  36     .parse = parse_uint8,
  37     .print = print_uint8,
  38 };
  39
  40 /* --- 16bit integer --- */
  41
  42 static int parse_uint16(DeviceState *dev, Property *prop, const char *str)
  43 {
  44     uint16_t *ptr = qdev_get_prop_ptr(dev, prop);
  45     const char *fmt;
  46
  47     /* accept both hex and decimal */
  48     fmt = strncasecmp(str, "0x",2) == 0 ? "%" PRIx16 : "%" PRIu16;
  49     if (sscanf(str, fmt, ptr) != 1)
  50         return -1;
  51     return 0;
  52 }
  53
  54 static int print_uint16(DeviceState *dev, Property *prop, char *dest, size_t len)
  55 {
  56     uint16_t *ptr = qdev_get_prop_ptr(dev, prop);
  57     return snprintf(dest, len, "%" PRIu16, *ptr);
  58 }
  59
  60 PropertyInfo qdev_prop_uint16 = {
  61     .name  = "uint16",
  62     .type  = PROP_TYPE_UINT16,
  63     .size  = sizeof(uint16_t),
  64     .parse = parse_uint16,
  65     .print = print_uint16,
  66 };
  67
  68 /* --- 32bit integer --- */
  69
  70 static int parse_uint32(DeviceState *dev, Property *prop, const char *str)
  71 {
  72     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
  73     const char *fmt;
  74
  75     /* accept both hex and decimal */
  76     fmt = strncasecmp(str, "0x",2) == 0 ? "%" PRIx32 : "%" PRIu32;
  77     if (sscanf(str, fmt, ptr) != 1)
  78         return -1;
  79     return 0;
  80 }
  81
  82 static int print_uint32(DeviceState *dev, Property *prop, char *dest, size_t len)
  83 {
  84     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
  85     return snprintf(dest, len, "%" PRIu32, *ptr);
  86 }
  87
  88 PropertyInfo qdev_prop_uint32 = {
  89     .name  = "uint32",
  90     .type  = PROP_TYPE_UINT32,
  91     .size  = sizeof(uint32_t),
  92     .parse = parse_uint32,
  93     .print = print_uint32,
  94 };
  95
  96 static int parse_int32(DeviceState *dev, Property *prop, const char *str)
  97 {
  98     int32_t *ptr = qdev_get_prop_ptr(dev, prop);
  99
 100     if (sscanf(str, "%" PRId32, ptr) != 1)
 101         return -1;
 102     return 0;
 103 }
 104
 105 static int print_int32(DeviceState *dev, Property *prop, char *dest, size_t len)
 106 {
 107     int32_t *ptr = qdev_get_prop_ptr(dev, prop);
 108     return snprintf(dest, len, "%" PRId32, *ptr);
 109 }
 110
 111 PropertyInfo qdev_prop_int32 = {
 112     .name  = "int32",
 113     .type  = PROP_TYPE_INT32,
 114     .size  = sizeof(int32_t),
 115     .parse = parse_int32,
 116     .print = print_int32,
 117 };
 118
 119 /* --- 32bit hex value --- */
 120
 121 static int parse_hex32(DeviceState *dev, Property *prop, const char *str)
 122 {
 123     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
 124
 125     if (sscanf(str, "%" PRIx32, ptr) != 1)
 126         return -1;
 127     return 0;
 128 }
 129
 130 static int print_hex32(DeviceState *dev, Property *prop, char *dest, size_t len)
 131 {
 132     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
 133     return snprintf(dest, len, "0x%" PRIx32, *ptr);
 134 }
 135
 136 PropertyInfo qdev_prop_hex32 = {
 137     .name  = "hex32",
 138     .type  = PROP_TYPE_UINT32,
 139     .size  = sizeof(uint32_t),
 140     .parse = parse_hex32,
 141     .print = print_hex32,
 142 };
 143
 144 /* --- 64bit integer --- */
 145
 146 static int parse_uint64(DeviceState *dev, Property *prop, const char *str)
 147 {
 148     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
 149     const char *fmt;
 150
 151     /* accept both hex and decimal */
 152     fmt = strncasecmp(str, "0x",2) == 0 ? "%" PRIx64 : "%" PRIu64;
 153     if (sscanf(str, fmt, ptr) != 1)
 154         return -1;
 155     return 0;
 156 }
 157
 158 static int print_uint64(DeviceState *dev, Property *prop, char *dest, size_t len)
 159 {
 160     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
 161     return snprintf(dest, len, "%" PRIu64, *ptr);
 162 }
 163
 164 PropertyInfo qdev_prop_uint64 = {
 165     .name  = "uint64",
 166     .type  = PROP_TYPE_UINT64,
 167     .size  = sizeof(uint64_t),
 168     .parse = parse_uint64,
 169     .print = print_uint64,
 170 };
 171
 172 /* --- 64bit hex value --- */
 173
 174 static int parse_hex64(DeviceState *dev, Property *prop, const char *str)
 175 {
 176     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
 177
 178     if (sscanf(str, "%" PRIx64, ptr) != 1)
 179         return -1;
 180     return 0;
 181 }
 182
 183 static int print_hex64(DeviceState *dev, Property *prop, char *dest, size_t len)
 184 {
 185     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
 186     return snprintf(dest, len, "0x%" PRIx64, *ptr);
 187 }
 188
 189 PropertyInfo qdev_prop_hex64 = {
 190     .name  = "hex64",
 191     .type  = PROP_TYPE_UINT64,
 192     .size  = sizeof(uint64_t),
 193     .parse = parse_hex64,
 194     .print = print_hex64,
 195 };
 196
 197 /* --- string --- */
 198
 199 static int parse_string(DeviceState *dev, Property *prop, const char *str)
 200 {
 201     char **ptr = qdev_get_prop_ptr(dev, prop);
 202
 203     if (*ptr)
 204         qemu_free(*ptr);
 205     *ptr = qemu_strdup(str);
 206     return 0;
 207 }
 208
 209 static int print_string(DeviceState *dev, Property *prop, char *dest, size_t len)
 210 {
 211     char **ptr = qdev_get_prop_ptr(dev, prop);
 212     if (!*ptr)
 213         return snprintf(dest, len, "<null>");
 214     return snprintf(dest, len, "\"%s\"", *ptr);
 215 }
 216
 217 PropertyInfo qdev_prop_string = {
 218     .name  = "string",
 219     .type  = PROP_TYPE_STRING,
 220     .size  = sizeof(char*),
 221     .parse = parse_string,
 222     .print = print_string,
 223 };
 224
 225 /* --- drive --- */
 226
 227 static int parse_drive(DeviceState *dev, Property *prop, const char *str)
 228 {
 229     DriveInfo **ptr = qdev_get_prop_ptr(dev, prop);
 230
 231     *ptr = drive_get_by_id(str);
 232     if (*ptr == NULL)
 233         return -1;
 234     return 0;
 235 }
 236
 237 static int print_drive(DeviceState *dev, Property *prop, char *dest, size_t len)
 238 {
 239     DriveInfo **ptr = qdev_get_prop_ptr(dev, prop);
 240     return snprintf(dest, len, "%s", (*ptr) ? (*ptr)->id : "<null>");
 241 }
 242
 243 PropertyInfo qdev_prop_drive = {
 244     .name  = "drive",
 245     .type  = PROP_TYPE_DRIVE,
 246     .size  = sizeof(DriveInfo*),
 247     .parse = parse_drive,
 248     .print = print_drive,
 249 };
 250
 251 /* --- character device --- */
 252
 253 static int parse_chr(DeviceState *dev, Property *prop, const char *str)
 254 {
 255     CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
 256
 257     *ptr = qemu_chr_find(str);
 258     if (*ptr == NULL)
 259         return -1;
 260     return 0;
 261 }
 262
 263 static int print_chr(DeviceState *dev, Property *prop, char *dest, size_t len)
 264 {
 265     CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
 266
 267     if (*ptr && (*ptr)->label) {
 268         return snprintf(dest, len, "%s", (*ptr)->label);
 269     } else {
 270         return snprintf(dest, len, "<null>");
 271     }
 272 }
 273
 274 PropertyInfo qdev_prop_chr = {
 275     .name  = "chr",
 276     .type  = PROP_TYPE_CHR,
 277     .size  = sizeof(CharDriverState*),
 278     .parse = parse_chr,
 279     .print = print_chr,
 280 };
 281
 282 /* --- netdev device --- */
 283
 284 static int parse_netdev(DeviceState *dev, Property *prop, const char *str)
 285 {
 286     VLANClientState **ptr = qdev_get_prop_ptr(dev, prop);
 287
 288     *ptr = qemu_find_netdev(str);
 289     if (*ptr == NULL)
 290         return -1;
 291     return 0;
 292 }
 293
 294 static int print_netdev(DeviceState *dev, Property *prop, char *dest, size_t len)
 295 {
 296     VLANClientState **ptr = qdev_get_prop_ptr(dev, prop);
 297
 298     if (*ptr && (*ptr)->name) {
 299         return snprintf(dest, len, "%s", (*ptr)->name);
 300     } else {
 301         return snprintf(dest, len, "<null>");
 302     }
 303 }
 304
 305 PropertyInfo qdev_prop_netdev = {
 306     .name  = "netdev",
 307     .type  = PROP_TYPE_NETDEV,
 308     .size  = sizeof(VLANClientState*),
 309     .parse = parse_netdev,
 310     .print = print_netdev,
 311 };
 312
 313 /* --- vlan --- */
 314
 315 static int parse_vlan(DeviceState *dev, Property *prop, const char *str)
 316 {
 317     VLANState **ptr = qdev_get_prop_ptr(dev, prop);
 318     int id;
 319
 320     if (sscanf(str, "%d", &id) != 1)
 321         return -1;
 322     *ptr = qemu_find_vlan(id, 1);
 323     if (*ptr == NULL)
 324         return -1;
 325     return 0;
 326 }
 327
 328 static int print_vlan(DeviceState *dev, Property *prop, char *dest, size_t len)
 329 {
 330     VLANState **ptr = qdev_get_prop_ptr(dev, prop);
 331
 332     if (*ptr) {
 333         return snprintf(dest, len, "%d", (*ptr)->id);
 334     } else {
 335         return snprintf(dest, len, "<null>");
 336     }
 337 }
 338
 339 PropertyInfo qdev_prop_vlan = {
 340     .name  = "vlan",
 341     .type  = PROP_TYPE_VLAN,
 342     .size  = sizeof(VLANClientState*),
 343     .parse = parse_vlan,
 344     .print = print_vlan,
 345 };
 346
 347 /* --- pointer --- */
 348
 349 static int print_ptr(DeviceState *dev, Property *prop, char *dest, size_t len)
 350 {
 351     void **ptr = qdev_get_prop_ptr(dev, prop);
 352     return snprintf(dest, len, "<%p>", *ptr);
 353 }
 354
 355 PropertyInfo qdev_prop_ptr = {
 356     .name  = "ptr",
 357     .type  = PROP_TYPE_PTR,
 358     .size  = sizeof(void*),
 359     .print = print_ptr,
 360 };
 361
 362 /* --- mac address --- */
 363
 364 /*
 365  * accepted syntax versions:
 366  *   01:02:03:04:05:06
 367  *   01-02-03-04-05-06
 368  */
 369 static int parse_mac(DeviceState *dev, Property *prop, const char *str)
 370 {
 371     MACAddr *mac = qdev_get_prop_ptr(dev, prop);
 372     int i, pos;
 373     char *p;
 374
 375     for (i = 0, pos = 0; i < 6; i++, pos += 3) {
 376         if (!qemu_isxdigit(str[pos]))
 377             return -1;
 378         if (!qemu_isxdigit(str[pos+1]))
 379             return -1;
 380         if (i == 5) {
 381             if (str[pos+2] != '\0')
 382                 return -1;
 383         } else {
 384             if (str[pos+2] != ':' && str[pos+2] != '-')
 385                 return -1;
 386         }
 387         mac->a[i] = strtol(str+pos, &p, 16);
 388     }
 389     return 0;
 390 }
 391
 392 static int print_mac(DeviceState *dev, Property *prop, char *dest, size_t len)
 393 {
 394     MACAddr *mac = qdev_get_prop_ptr(dev, prop);
 395
 396     return snprintf(dest, len, "%02x:%02x:%02x:%02x:%02x:%02x",
 397                     mac->a[0], mac->a[1], mac->a[2],
 398                     mac->a[3], mac->a[4], mac->a[5]);
 399 }
 400
 401 PropertyInfo qdev_prop_macaddr = {
 402     .name  = "macaddr",
 403     .type  = PROP_TYPE_MACADDR,
 404     .size  = sizeof(MACAddr),
 405     .parse = parse_mac,
 406     .print = print_mac,
 407 };
 408
 409 /* --- pci address --- */
 410
 411 /*
 412  * bus-local address, i.e. "$slot" or "$slot.$fn"
 413  */
 414 static int parse_pci_devfn(DeviceState *dev, Property *prop, const char *str)
 415 {
 416     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
 417     unsigned int slot, fn, n;
 418
 419     if (sscanf(str, "%x.%x%n", &slot, &fn, &n) != 2) {
 420         fn = 0;
 421         if (sscanf(str, "%x%n", &slot, &n) != 1) {
 422             return -1;
 423         }
 424     }
 425     if (str[n] != '\0')
 426         return -1;
 427     if (fn > 7)
 428         return -1;
 429     *ptr = slot << 3 | fn;
 430     return 0;
 431 }
 432
 433 static int print_pci_devfn(DeviceState *dev, Property *prop, char *dest, size_t len)
 434 {
 435     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
 436
 437     if (*ptr == -1) {
 438         return snprintf(dest, len, "<unset>");
 439     } else {
 440         return snprintf(dest, len, "%02x.%x", *ptr >> 3, *ptr & 7);
 441     }
 442 }
 443
 444 PropertyInfo qdev_prop_pci_devfn = {
 445     .name  = "pci-devfn",
 446     .type  = PROP_TYPE_UINT32,
 447     .size  = sizeof(uint32_t),
 448     .parse = parse_pci_devfn,
 449     .print = print_pci_devfn,
 450 };
 451
 452 /* --- public helpers --- */
 453
 454 static Property *qdev_prop_walk(Property *props, const char *name)
 455 {
 456     if (!props)
 457         return NULL;
 458     while (props->name) {
 459         if (strcmp(props->name, name) == 0)
 460             return props;
 461         props++;
 462     }
 463     return NULL;
 464 }
 465
 466 static Property *qdev_prop_find(DeviceState *dev, const char *name)
 467 {
 468     Property *prop;
 469
 470     /* device properties */
 471     prop = qdev_prop_walk(dev->info->props, name);
 472     if (prop)
 473         return prop;
 474
 475     /* bus properties */
 476     prop = qdev_prop_walk(dev->parent_bus->info->props, name);
 477     if (prop)
 478         return prop;
 479
 480     return NULL;
 481 }
 482
 483 int qdev_prop_exists(DeviceState *dev, const char *name)
 484 {
 485     return qdev_prop_find(dev, name) ? true : false;
 486 }
 487
 488 int qdev_prop_parse(DeviceState *dev, const char *name, const char *value)
 489 {
 490     Property *prop;
 491
 492     prop = qdev_prop_find(dev, name);
 493     if (!prop) {
 494         fprintf(stderr, "property \"%s.%s\" not found\n",
 495                 dev->info->name, name);
 496         return -1;
 497     }
 498     if (!prop->info->parse) {
 499         fprintf(stderr, "property \"%s.%s\" has no parser\n",
 500                 dev->info->name, name);
 501         return -1;
 502     }
 503     if (prop->info->parse(dev, prop, value) != 0) {
 504         fprintf(stderr, "property \"%s.%s\": failed to parse \"%s\"\n",
 505                 dev->info->name, name, value);
 506         return -1;
 507     }
 508     return 0;
 509 }
 510
 511 void qdev_prop_set(DeviceState *dev, const char *name, void *src, enum PropertyType type)
 512 {
 513     Property *prop;
 514     void *dst;
 515
 516     prop = qdev_prop_find(dev, name);
 517     if (!prop) {
 518         fprintf(stderr, "%s: property \"%s.%s\" not found\n",
 519                 __FUNCTION__, dev->info->name, name);
 520         abort();
 521     }
 522     if (prop->info->type != type) {
 523         fprintf(stderr, "%s: property \"%s.%s\" type mismatch\n",
 524                 __FUNCTION__, dev->info->name, name);
 525         abort();
 526     }
 527     dst = qdev_get_prop_ptr(dev, prop);
 528     memcpy(dst, src, prop->info->size);
 529 }
 530
 531 void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value)
 532 {
 533     qdev_prop_set(dev, name, &value, PROP_TYPE_UINT8);
 534 }
 535
 536 void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value)
 537 {
 538     qdev_prop_set(dev, name, &value, PROP_TYPE_UINT16);
 539 }
 540
 541 void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value)
 542 {
 543     qdev_prop_set(dev, name, &value, PROP_TYPE_UINT32);
 544 }
 545
 546 void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value)
 547 {
 548     qdev_prop_set(dev, name, &value, PROP_TYPE_INT32);
 549 }
 550
 551 void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value)
 552 {
 553     qdev_prop_set(dev, name, &value, PROP_TYPE_UINT64);
 554 }
 555
 556 void qdev_prop_set_drive(DeviceState *dev, const char *name, DriveInfo *value)
 557 {
 558     qdev_prop_set(dev, name, &value, PROP_TYPE_DRIVE);
 559 }
 560
 561 void qdev_prop_set_chr(DeviceState *dev, const char *name, CharDriverState *value)
 562 {
 563     qdev_prop_set(dev, name, &value, PROP_TYPE_CHR);
 564 }
 565
 566 void qdev_prop_set_netdev(DeviceState *dev, const char *name, VLANClientState *value)
 567 {
 568     qdev_prop_set(dev, name, &value, PROP_TYPE_NETDEV);
 569 }
 570
 571 void qdev_prop_set_vlan(DeviceState *dev, const char *name, VLANState *value)
 572 {
 573     qdev_prop_set(dev, name, &value, PROP_TYPE_VLAN);
 574 }
 575
 576 void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value)
 577 {
 578     qdev_prop_set(dev, name, value, PROP_TYPE_MACADDR);
 579 }
 580
 581 void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value)
 582 {
 583     qdev_prop_set(dev, name, &value, PROP_TYPE_PTR);
 584 }
 585
 586 void qdev_prop_set_defaults(DeviceState *dev, Property *props)
 587 {
 588     char *dst;
 589
 590     if (!props)
 591         return;
 592     while (props->name) {
 593         if (props->defval) {
 594             dst = qdev_get_prop_ptr(dev, props);
 595             memcpy(dst, props->defval, props->info->size);
 596         }
 597         props++;
 598     }
 599 }
 600
 601 static QTAILQ_HEAD(, GlobalProperty) global_props = QTAILQ_HEAD_INITIALIZER(global_props);
 602
 603 void qdev_prop_register_global(GlobalProperty *prop)
 604 {
 605     QTAILQ_INSERT_TAIL(&global_props, prop, next);
 606 }
 607
 608 void qdev_prop_register_global_list(GlobalProperty *props)
 609 {
 610     int i;
 611
 612     for (i = 0; props[i].driver != NULL; i++) {
 613         qdev_prop_register_global(props+i);
 614     }
 615 }
 616
 617 void qdev_prop_set_globals(DeviceState *dev)
 618 {
 619     GlobalProperty *prop;
 620
 621     QTAILQ_FOREACH(prop, &global_props, next) {
 622         if (strcmp(dev->info->name, prop->driver) != 0 &&
 623             strcmp(dev->info->bus_info->name, prop->driver) != 0) {
 624             continue;
 625         }
 626         if (qdev_prop_parse(dev, prop->property, prop->value) != 0) {
 627             exit(1);
 628         }
 629     }
 630 }