1 /* Simple code to turn various tables in an ELF file into alias definitions. 2 * This deals with kernel datastructures where they should be 3 * dealt with: in the kernel source. 4 * 5 * Copyright 2002-2003 Rusty Russell, IBM Corporation 6 * 2003 Kai Germaschewski 7 * 8 * 9 * This software may be used and distributed according to the terms 10 * of the GNU General Public License, incorporated herein by reference. 11 */ 12 13 #include "modpost.h" 14 15 /* We use the ELF typedefs for kernel_ulong_t but bite the bullet and 16 * use either stdint.h or inttypes.h for the rest. */ 17 #if KERNEL_ELFCLASS == ELFCLASS32 18 typedef Elf32_Addr kernel_ulong_t; 19 #define BITS_PER_LONG 32 20 #else 21 typedef Elf64_Addr kernel_ulong_t; 22 #define BITS_PER_LONG 64 23 #endif 24 #ifdef __sun__ 25 #include <inttypes.h> 26 #else 27 #include <stdint.h> 28 #endif 29 30 #include <ctype.h> 31 32 typedef uint32_t __u32; 33 typedef uint16_t __u16; 34 typedef unsigned char __u8; 35 36 /* Big exception to the "don't include kernel headers into userspace, which 37 * even potentially has different endianness and word sizes, since 38 * we handle those differences explicitly below */ 39 #include "../../include/linux/mod_devicetable.h" 40 41 #define ADD(str, sep, cond, field) \ 42 do { \ 43 strcat(str, sep); \ 44 if (cond) \ 45 sprintf(str + strlen(str), \ 46 sizeof(field) == 1 ? "%02X" : \ 47 sizeof(field) == 2 ? "%04X" : \ 48 sizeof(field) == 4 ? "%08X" : "", \ 49 field); \ 50 else \ 51 sprintf(str + strlen(str), "*"); \ 52 } while(0) 53 54 /* Always end in a wildcard, for future extension */ 55 static inline void add_wildcard(char *str) 56 { 57 int len = strlen(str); 58 59 if (str[len - 1] != '*') 60 strcat(str + len, "*"); 61 } 62 63 unsigned int cross_build = 0; 64 /** 65 * Check that sizeof(device_id type) are consistent with size of section 66 * in .o file. If in-consistent then userspace and kernel does not agree 67 * on actual size which is a bug. 68 * Also verify that the final entry in the table is all zeros. 69 * Ignore both checks if build host differ from target host and size differs. 70 **/ 71 static void device_id_check(const char *modname, const char *device_id, 72 unsigned long size, unsigned long id_size, 73 void *symval) 74 { 75 int i; 76 77 if (size % id_size || size < id_size) { 78 if (cross_build != 0) 79 return; 80 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo " 81 "of the size of section __mod_%s_device_table=%lu.\n" 82 "Fix definition of struct %s_device_id " 83 "in mod_devicetable.h\n", 84 modname, device_id, id_size, device_id, size, device_id); 85 } 86 /* Verify last one is a terminator */ 87 for (i = 0; i < id_size; i++ ) { 88 if (*(uint8_t*)(symval+size-id_size+i)) { 89 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. " 90 "The last of %lu is:\n", 91 modname, device_id, id_size, size / id_size); 92 for (i = 0; i < id_size; i++ ) 93 fprintf(stderr,"0x%02x ", 94 *(uint8_t*)(symval+size-id_size+i) ); 95 fprintf(stderr,"\n"); 96 fatal("%s: struct %s_device_id is not terminated " 97 "with a NULL entry!\n", modname, device_id); 98 } 99 } 100 } 101 102 /* USB is special because the bcdDevice can be matched against a numeric range */ 103 /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */ 104 static void do_usb_entry(struct usb_device_id *id, 105 unsigned int bcdDevice_initial, int bcdDevice_initial_digits, 106 unsigned char range_lo, unsigned char range_hi, 107 struct module *mod) 108 { 109 char alias[500]; 110 strcpy(alias, "usb:"); 111 ADD(alias, "v", id->match_flags&USB_DEVICE_ID_MATCH_VENDOR, 112 id->idVendor); 113 ADD(alias, "p", id->match_flags&USB_DEVICE_ID_MATCH_PRODUCT, 114 id->idProduct); 115 116 strcat(alias, "d"); 117 if (bcdDevice_initial_digits) 118 sprintf(alias + strlen(alias), "%0*X", 119 bcdDevice_initial_digits, bcdDevice_initial); 120 if (range_lo == range_hi) 121 sprintf(alias + strlen(alias), "%u", range_lo); 122 else if (range_lo > 0 || range_hi < 9) 123 sprintf(alias + strlen(alias), "[%u-%u]", range_lo, range_hi); 124 if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1)) 125 strcat(alias, "*"); 126 127 ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS, 128 id->bDeviceClass); 129 ADD(alias, "dsc", 130 id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS, 131 id->bDeviceSubClass); 132 ADD(alias, "dp", 133 id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL, 134 id->bDeviceProtocol); 135 ADD(alias, "ic", 136 id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS, 137 id->bInterfaceClass); 138 ADD(alias, "isc", 139 id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS, 140 id->bInterfaceSubClass); 141 ADD(alias, "ip", 142 id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL, 143 id->bInterfaceProtocol); 144 145 add_wildcard(alias); 146 buf_printf(&mod->dev_table_buf, 147 "MODULE_ALIAS(\"%s\");\n", alias); 148 } 149 150 static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod) 151 { 152 unsigned int devlo, devhi; 153 unsigned char chi, clo; 154 int ndigits; 155 156 id->match_flags = TO_NATIVE(id->match_flags); 157 id->idVendor = TO_NATIVE(id->idVendor); 158 id->idProduct = TO_NATIVE(id->idProduct); 159 160 devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ? 161 TO_NATIVE(id->bcdDevice_lo) : 0x0U; 162 devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ? 163 TO_NATIVE(id->bcdDevice_hi) : ~0x0U; 164 165 /* 166 * Some modules (visor) have empty slots as placeholder for 167 * run-time specification that results in catch-all alias 168 */ 169 if (!(id->idVendor | id->idProduct | id->bDeviceClass | id->bInterfaceClass)) 170 return; 171 172 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */ 173 for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) { 174 clo = devlo & 0xf; 175 chi = devhi & 0xf; 176 if (chi > 9) /* it's bcd not hex */ 177 chi = 9; 178 devlo >>= 4; 179 devhi >>= 4; 180 181 if (devlo == devhi || !ndigits) { 182 do_usb_entry(id, devlo, ndigits, clo, chi, mod); 183 break; 184 } 185 186 if (clo > 0) 187 do_usb_entry(id, devlo++, ndigits, clo, 9, mod); 188 189 if (chi < 9) 190 do_usb_entry(id, devhi--, ndigits, 0, chi, mod); 191 } 192 } 193 194 static void do_usb_table(void *symval, unsigned long size, 195 struct module *mod) 196 { 197 unsigned int i; 198 const unsigned long id_size = sizeof(struct usb_device_id); 199 200 device_id_check(mod->name, "usb", size, id_size, symval); 201 202 /* Leave last one: it's the terminator. */ 203 size -= id_size; 204 205 for (i = 0; i < size; i += id_size) 206 do_usb_entry_multi(symval + i, mod); 207 } 208 209 /* Looks like: ieee1394:venNmoNspNverN */ 210 static int do_ieee1394_entry(const char *filename, 211 struct ieee1394_device_id *id, char *alias) 212 { 213 id->match_flags = TO_NATIVE(id->match_flags); 214 id->vendor_id = TO_NATIVE(id->vendor_id); 215 id->model_id = TO_NATIVE(id->model_id); 216 id->specifier_id = TO_NATIVE(id->specifier_id); 217 id->version = TO_NATIVE(id->version); 218 219 strcpy(alias, "ieee1394:"); 220 ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID, 221 id->vendor_id); 222 ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID, 223 id->model_id); 224 ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID, 225 id->specifier_id); 226 ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION, 227 id->version); 228 229 add_wildcard(alias); 230 return 1; 231 } 232 233 /* Looks like: pci:vNdNsvNsdNbcNscNiN. */ 234 static int do_pci_entry(const char *filename, 235 struct pci_device_id *id, char *alias) 236 { 237 /* Class field can be divided into these three. */ 238 unsigned char baseclass, subclass, interface, 239 baseclass_mask, subclass_mask, interface_mask; 240 241 id->vendor = TO_NATIVE(id->vendor); 242 id->device = TO_NATIVE(id->device); 243 id->subvendor = TO_NATIVE(id->subvendor); 244 id->subdevice = TO_NATIVE(id->subdevice); 245 id->class = TO_NATIVE(id->class); 246 id->class_mask = TO_NATIVE(id->class_mask); 247 248 strcpy(alias, "pci:"); 249 ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor); 250 ADD(alias, "d", id->device != PCI_ANY_ID, id->device); 251 ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor); 252 ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice); 253 254 baseclass = (id->class) >> 16; 255 baseclass_mask = (id->class_mask) >> 16; 256 subclass = (id->class) >> 8; 257 subclass_mask = (id->class_mask) >> 8; 258 interface = id->class; 259 interface_mask = id->class_mask; 260 261 if ((baseclass_mask != 0 && baseclass_mask != 0xFF) 262 || (subclass_mask != 0 && subclass_mask != 0xFF) 263 || (interface_mask != 0 && interface_mask != 0xFF)) { 264 warn("Can't handle masks in %s:%04X\n", 265 filename, id->class_mask); 266 return 0; 267 } 268 269 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass); 270 ADD(alias, "sc", subclass_mask == 0xFF, subclass); 271 ADD(alias, "i", interface_mask == 0xFF, interface); 272 add_wildcard(alias); 273 return 1; 274 } 275 276 /* looks like: "ccw:tNmNdtNdmN" */ 277 static int do_ccw_entry(const char *filename, 278 struct ccw_device_id *id, char *alias) 279 { 280 id->match_flags = TO_NATIVE(id->match_flags); 281 id->cu_type = TO_NATIVE(id->cu_type); 282 id->cu_model = TO_NATIVE(id->cu_model); 283 id->dev_type = TO_NATIVE(id->dev_type); 284 id->dev_model = TO_NATIVE(id->dev_model); 285 286 strcpy(alias, "ccw:"); 287 ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE, 288 id->cu_type); 289 ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL, 290 id->cu_model); 291 ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE, 292 id->dev_type); 293 ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL, 294 id->dev_model); 295 add_wildcard(alias); 296 return 1; 297 } 298 299 /* looks like: "ap:tN" */ 300 static int do_ap_entry(const char *filename, 301 struct ap_device_id *id, char *alias) 302 { 303 sprintf(alias, "ap:t%02X*", id->dev_type); 304 return 1; 305 } 306 307 /* Looks like: "serio:tyNprNidNexN" */ 308 static int do_serio_entry(const char *filename, 309 struct serio_device_id *id, char *alias) 310 { 311 id->type = TO_NATIVE(id->type); 312 id->proto = TO_NATIVE(id->proto); 313 id->id = TO_NATIVE(id->id); 314 id->extra = TO_NATIVE(id->extra); 315 316 strcpy(alias, "serio:"); 317 ADD(alias, "ty", id->type != SERIO_ANY, id->type); 318 ADD(alias, "pr", id->proto != SERIO_ANY, id->proto); 319 ADD(alias, "id", id->id != SERIO_ANY, id->id); 320 ADD(alias, "ex", id->extra != SERIO_ANY, id->extra); 321 322 add_wildcard(alias); 323 return 1; 324 } 325 326 /* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */ 327 static int do_acpi_entry(const char *filename, 328 struct acpi_device_id *id, char *alias) 329 { 330 sprintf(alias, "acpi*:%s:*", id->id); 331 return 1; 332 } 333 334 /* looks like: "pnp:dD" */ 335 static int do_pnp_entry(const char *filename, 336 struct pnp_device_id *id, char *alias) 337 { 338 sprintf(alias, "pnp:d%s*", id->id); 339 return 1; 340 } 341 342 /* looks like: "pnp:dD" for every device of the card */ 343 static void do_pnp_card_entries(void *symval, unsigned long size, 344 struct module *mod) 345 { 346 const unsigned long id_size = sizeof(struct pnp_card_device_id); 347 const unsigned int count = (size / id_size)-1; 348 const struct pnp_card_device_id *cards = symval; 349 unsigned int i; 350 351 device_id_check(mod->name, "pnp", size, id_size, symval); 352 353 for (i = 0; i < count; i++) { 354 unsigned int j; 355 const struct pnp_card_device_id *card = &cards[i]; 356 357 for (j = 0; j < PNP_MAX_DEVICES; j++) { 358 const char *id = (char *)card->devs[j].id; 359 int i2, j2; 360 int dup = 0; 361 362 if (!id[0]) 363 break; 364 365 /* find duplicate, already added value */ 366 for (i2 = 0; i2 < i && !dup; i2++) { 367 const struct pnp_card_device_id *card2 = &cards[i2]; 368 369 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) { 370 const char *id2 = (char *)card2->devs[j2].id; 371 372 if (!id2[0]) 373 break; 374 375 if (!strcmp(id, id2)) { 376 dup = 1; 377 break; 378 } 379 } 380 } 381 382 /* add an individual alias for every device entry */ 383 if (!dup) 384 buf_printf(&mod->dev_table_buf, 385 "MODULE_ALIAS(\"pnp:d%s*\");\n", id); 386 } 387 } 388 } 389 390 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */ 391 static int do_pcmcia_entry(const char *filename, 392 struct pcmcia_device_id *id, char *alias) 393 { 394 unsigned int i; 395 396 id->match_flags = TO_NATIVE(id->match_flags); 397 id->manf_id = TO_NATIVE(id->manf_id); 398 id->card_id = TO_NATIVE(id->card_id); 399 id->func_id = TO_NATIVE(id->func_id); 400 id->function = TO_NATIVE(id->function); 401 id->device_no = TO_NATIVE(id->device_no); 402 403 for (i=0; i<4; i++) { 404 id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]); 405 } 406 407 strcpy(alias, "pcmcia:"); 408 ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID, 409 id->manf_id); 410 ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID, 411 id->card_id); 412 ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID, 413 id->func_id); 414 ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION, 415 id->function); 416 ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO, 417 id->device_no); 418 ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]); 419 ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]); 420 ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]); 421 ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]); 422 423 add_wildcard(alias); 424 return 1; 425 } 426 427 428 429 static int do_of_entry (const char *filename, struct of_device_id *of, char *alias) 430 { 431 int len; 432 char *tmp; 433 len = sprintf (alias, "of:N%sT%s", 434 of->name[0] ? of->name : "*", 435 of->type[0] ? of->type : "*"); 436 437 if (of->compatible[0]) 438 sprintf (&alias[len], "%sC%s", 439 of->type[0] ? "*" : "", 440 of->compatible); 441 442 /* Replace all whitespace with underscores */ 443 for (tmp = alias; tmp && *tmp; tmp++) 444 if (isspace (*tmp)) 445 *tmp = '_'; 446 447 add_wildcard(alias); 448 return 1; 449 } 450 451 static int do_vio_entry(const char *filename, struct vio_device_id *vio, 452 char *alias) 453 { 454 char *tmp; 455 456 sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*", 457 vio->compat[0] ? vio->compat : "*"); 458 459 /* Replace all whitespace with underscores */ 460 for (tmp = alias; tmp && *tmp; tmp++) 461 if (isspace (*tmp)) 462 *tmp = '_'; 463 464 add_wildcard(alias); 465 return 1; 466 } 467 468 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 469 470 static void do_input(char *alias, 471 kernel_ulong_t *arr, unsigned int min, unsigned int max) 472 { 473 unsigned int i; 474 475 for (i = min; i < max; i++) 476 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG))) 477 sprintf(alias + strlen(alias), "%X,*", i); 478 } 479 480 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */ 481 static int do_input_entry(const char *filename, struct input_device_id *id, 482 char *alias) 483 { 484 sprintf(alias, "input:"); 485 486 ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype); 487 ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor); 488 ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product); 489 ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version); 490 491 sprintf(alias + strlen(alias), "-e*"); 492 if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT) 493 do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX); 494 sprintf(alias + strlen(alias), "k*"); 495 if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT) 496 do_input(alias, id->keybit, 497 INPUT_DEVICE_ID_KEY_MIN_INTERESTING, 498 INPUT_DEVICE_ID_KEY_MAX); 499 sprintf(alias + strlen(alias), "r*"); 500 if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT) 501 do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX); 502 sprintf(alias + strlen(alias), "a*"); 503 if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT) 504 do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX); 505 sprintf(alias + strlen(alias), "m*"); 506 if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT) 507 do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX); 508 sprintf(alias + strlen(alias), "l*"); 509 if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT) 510 do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX); 511 sprintf(alias + strlen(alias), "s*"); 512 if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT) 513 do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX); 514 sprintf(alias + strlen(alias), "f*"); 515 if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT) 516 do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX); 517 sprintf(alias + strlen(alias), "w*"); 518 if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT) 519 do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX); 520 return 1; 521 } 522 523 static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa, 524 char *alias) 525 { 526 if (eisa->sig[0]) 527 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig); 528 else 529 strcat(alias, "*"); 530 return 1; 531 } 532 533 /* Looks like: parisc:tNhvNrevNsvN */ 534 static int do_parisc_entry(const char *filename, struct parisc_device_id *id, 535 char *alias) 536 { 537 id->hw_type = TO_NATIVE(id->hw_type); 538 id->hversion = TO_NATIVE(id->hversion); 539 id->hversion_rev = TO_NATIVE(id->hversion_rev); 540 id->sversion = TO_NATIVE(id->sversion); 541 542 strcpy(alias, "parisc:"); 543 ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type); 544 ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion); 545 ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev); 546 ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion); 547 548 add_wildcard(alias); 549 return 1; 550 } 551 552 /* Looks like: sdio:cNvNdN. */ 553 static int do_sdio_entry(const char *filename, 554 struct sdio_device_id *id, char *alias) 555 { 556 id->class = TO_NATIVE(id->class); 557 id->vendor = TO_NATIVE(id->vendor); 558 id->device = TO_NATIVE(id->device); 559 560 strcpy(alias, "sdio:"); 561 ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class); 562 ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor); 563 ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device); 564 add_wildcard(alias); 565 return 1; 566 } 567 568 /* Looks like: ssb:vNidNrevN. */ 569 static int do_ssb_entry(const char *filename, 570 struct ssb_device_id *id, char *alias) 571 { 572 id->vendor = TO_NATIVE(id->vendor); 573 id->coreid = TO_NATIVE(id->coreid); 574 id->revision = TO_NATIVE(id->revision); 575 576 strcpy(alias, "ssb:"); 577 ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor); 578 ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid); 579 ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision); 580 add_wildcard(alias); 581 return 1; 582 } 583 584 /* Looks like: virtio:dNvN */ 585 static int do_virtio_entry(const char *filename, struct virtio_device_id *id, 586 char *alias) 587 { 588 id->device = TO_NATIVE(id->device); 589 id->vendor = TO_NATIVE(id->vendor); 590 591 strcpy(alias, "virtio:"); 592 ADD(alias, "d", 1, id->device); 593 ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor); 594 595 add_wildcard(alias); 596 return 1; 597 } 598 599 /* Looks like: i2c:S */ 600 static int do_i2c_entry(const char *filename, struct i2c_device_id *id, 601 char *alias) 602 { 603 sprintf(alias, I2C_MODULE_PREFIX "%s", id->name); 604 605 return 1; 606 } 607 608 /* Ignore any prefix, eg. v850 prepends _ */ 609 static inline int sym_is(const char *symbol, const char *name) 610 { 611 const char *match; 612 613 match = strstr(symbol, name); 614 if (!match) 615 return 0; 616 return match[strlen(symbol)] == '\0'; 617 } 618 619 static void do_table(void *symval, unsigned long size, 620 unsigned long id_size, 621 const char *device_id, 622 void *function, 623 struct module *mod) 624 { 625 unsigned int i; 626 char alias[500]; 627 int (*do_entry)(const char *, void *entry, char *alias) = function; 628 629 device_id_check(mod->name, device_id, size, id_size, symval); 630 /* Leave last one: it's the terminator. */ 631 size -= id_size; 632 633 for (i = 0; i < size; i += id_size) { 634 if (do_entry(mod->name, symval+i, alias)) { 635 buf_printf(&mod->dev_table_buf, 636 "MODULE_ALIAS(\"%s\");\n", alias); 637 } 638 } 639 } 640 641 /* Create MODULE_ALIAS() statements. 642 * At this time, we cannot write the actual output C source yet, 643 * so we write into the mod->dev_table_buf buffer. */ 644 void handle_moddevtable(struct module *mod, struct elf_info *info, 645 Elf_Sym *sym, const char *symname) 646 { 647 void *symval; 648 char *zeros = NULL; 649 650 /* We're looking for a section relative symbol */ 651 if (!sym->st_shndx || sym->st_shndx >= info->hdr->e_shnum) 652 return; 653 654 /* Handle all-NULL symbols allocated into .bss */ 655 if (info->sechdrs[sym->st_shndx].sh_type & SHT_NOBITS) { 656 zeros = calloc(1, sym->st_size); 657 symval = zeros; 658 } else { 659 symval = (void *)info->hdr 660 + info->sechdrs[sym->st_shndx].sh_offset 661 + sym->st_value; 662 } 663 664 if (sym_is(symname, "__mod_pci_device_table")) 665 do_table(symval, sym->st_size, 666 sizeof(struct pci_device_id), "pci", 667 do_pci_entry, mod); 668 else if (sym_is(symname, "__mod_usb_device_table")) 669 /* special case to handle bcdDevice ranges */ 670 do_usb_table(symval, sym->st_size, mod); 671 else if (sym_is(symname, "__mod_ieee1394_device_table")) 672 do_table(symval, sym->st_size, 673 sizeof(struct ieee1394_device_id), "ieee1394", 674 do_ieee1394_entry, mod); 675 else if (sym_is(symname, "__mod_ccw_device_table")) 676 do_table(symval, sym->st_size, 677 sizeof(struct ccw_device_id), "ccw", 678 do_ccw_entry, mod); 679 else if (sym_is(symname, "__mod_ap_device_table")) 680 do_table(symval, sym->st_size, 681 sizeof(struct ap_device_id), "ap", 682 do_ap_entry, mod); 683 else if (sym_is(symname, "__mod_serio_device_table")) 684 do_table(symval, sym->st_size, 685 sizeof(struct serio_device_id), "serio", 686 do_serio_entry, mod); 687 else if (sym_is(symname, "__mod_acpi_device_table")) 688 do_table(symval, sym->st_size, 689 sizeof(struct acpi_device_id), "acpi", 690 do_acpi_entry, mod); 691 else if (sym_is(symname, "__mod_pnp_device_table")) 692 do_table(symval, sym->st_size, 693 sizeof(struct pnp_device_id), "pnp", 694 do_pnp_entry, mod); 695 else if (sym_is(symname, "__mod_pnp_card_device_table")) 696 do_pnp_card_entries(symval, sym->st_size, mod); 697 else if (sym_is(symname, "__mod_pcmcia_device_table")) 698 do_table(symval, sym->st_size, 699 sizeof(struct pcmcia_device_id), "pcmcia", 700 do_pcmcia_entry, mod); 701 else if (sym_is(symname, "__mod_of_device_table")) 702 do_table(symval, sym->st_size, 703 sizeof(struct of_device_id), "of", 704 do_of_entry, mod); 705 else if (sym_is(symname, "__mod_vio_device_table")) 706 do_table(symval, sym->st_size, 707 sizeof(struct vio_device_id), "vio", 708 do_vio_entry, mod); 709 else if (sym_is(symname, "__mod_input_device_table")) 710 do_table(symval, sym->st_size, 711 sizeof(struct input_device_id), "input", 712 do_input_entry, mod); 713 else if (sym_is(symname, "__mod_eisa_device_table")) 714 do_table(symval, sym->st_size, 715 sizeof(struct eisa_device_id), "eisa", 716 do_eisa_entry, mod); 717 else if (sym_is(symname, "__mod_parisc_device_table")) 718 do_table(symval, sym->st_size, 719 sizeof(struct parisc_device_id), "parisc", 720 do_parisc_entry, mod); 721 else if (sym_is(symname, "__mod_sdio_device_table")) 722 do_table(symval, sym->st_size, 723 sizeof(struct sdio_device_id), "sdio", 724 do_sdio_entry, mod); 725 else if (sym_is(symname, "__mod_ssb_device_table")) 726 do_table(symval, sym->st_size, 727 sizeof(struct ssb_device_id), "ssb", 728 do_ssb_entry, mod); 729 else if (sym_is(symname, "__mod_virtio_device_table")) 730 do_table(symval, sym->st_size, 731 sizeof(struct virtio_device_id), "virtio", 732 do_virtio_entry, mod); 733 else if (sym_is(symname, "__mod_i2c_device_table")) 734 do_table(symval, sym->st_size, 735 sizeof(struct i2c_device_id), "i2c", 736 do_i2c_entry, mod); 737 free(zeros); 738 } 739 740 /* Now add out buffered information to the generated C source */ 741 void add_moddevtable(struct buffer *buf, struct module *mod) 742 { 743 buf_printf(buf, "\n"); 744 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos); 745 free(mod->dev_table_buf.p); 746 } 747