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