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: hid:bNvNpN */ 210 static int do_hid_entry(const char *filename, 211 struct hid_device_id *id, char *alias) 212 { 213 id->bus = TO_NATIVE(id->bus); 214 id->vendor = TO_NATIVE(id->vendor); 215 id->product = TO_NATIVE(id->product); 216 217 sprintf(alias, "hid:b%04X", id->bus); 218 ADD(alias, "v", id->vendor != HID_ANY_ID, id->vendor); 219 ADD(alias, "p", id->product != HID_ANY_ID, id->product); 220 221 return 1; 222 } 223 224 /* Looks like: ieee1394:venNmoNspNverN */ 225 static int do_ieee1394_entry(const char *filename, 226 struct ieee1394_device_id *id, char *alias) 227 { 228 id->match_flags = TO_NATIVE(id->match_flags); 229 id->vendor_id = TO_NATIVE(id->vendor_id); 230 id->model_id = TO_NATIVE(id->model_id); 231 id->specifier_id = TO_NATIVE(id->specifier_id); 232 id->version = TO_NATIVE(id->version); 233 234 strcpy(alias, "ieee1394:"); 235 ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID, 236 id->vendor_id); 237 ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID, 238 id->model_id); 239 ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID, 240 id->specifier_id); 241 ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION, 242 id->version); 243 244 add_wildcard(alias); 245 return 1; 246 } 247 248 /* Looks like: pci:vNdNsvNsdNbcNscNiN. */ 249 static int do_pci_entry(const char *filename, 250 struct pci_device_id *id, char *alias) 251 { 252 /* Class field can be divided into these three. */ 253 unsigned char baseclass, subclass, interface, 254 baseclass_mask, subclass_mask, interface_mask; 255 256 id->vendor = TO_NATIVE(id->vendor); 257 id->device = TO_NATIVE(id->device); 258 id->subvendor = TO_NATIVE(id->subvendor); 259 id->subdevice = TO_NATIVE(id->subdevice); 260 id->class = TO_NATIVE(id->class); 261 id->class_mask = TO_NATIVE(id->class_mask); 262 263 strcpy(alias, "pci:"); 264 ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor); 265 ADD(alias, "d", id->device != PCI_ANY_ID, id->device); 266 ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor); 267 ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice); 268 269 baseclass = (id->class) >> 16; 270 baseclass_mask = (id->class_mask) >> 16; 271 subclass = (id->class) >> 8; 272 subclass_mask = (id->class_mask) >> 8; 273 interface = id->class; 274 interface_mask = id->class_mask; 275 276 if ((baseclass_mask != 0 && baseclass_mask != 0xFF) 277 || (subclass_mask != 0 && subclass_mask != 0xFF) 278 || (interface_mask != 0 && interface_mask != 0xFF)) { 279 warn("Can't handle masks in %s:%04X\n", 280 filename, id->class_mask); 281 return 0; 282 } 283 284 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass); 285 ADD(alias, "sc", subclass_mask == 0xFF, subclass); 286 ADD(alias, "i", interface_mask == 0xFF, interface); 287 add_wildcard(alias); 288 return 1; 289 } 290 291 /* looks like: "ccw:tNmNdtNdmN" */ 292 static int do_ccw_entry(const char *filename, 293 struct ccw_device_id *id, char *alias) 294 { 295 id->match_flags = TO_NATIVE(id->match_flags); 296 id->cu_type = TO_NATIVE(id->cu_type); 297 id->cu_model = TO_NATIVE(id->cu_model); 298 id->dev_type = TO_NATIVE(id->dev_type); 299 id->dev_model = TO_NATIVE(id->dev_model); 300 301 strcpy(alias, "ccw:"); 302 ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE, 303 id->cu_type); 304 ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL, 305 id->cu_model); 306 ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE, 307 id->dev_type); 308 ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL, 309 id->dev_model); 310 add_wildcard(alias); 311 return 1; 312 } 313 314 /* looks like: "ap:tN" */ 315 static int do_ap_entry(const char *filename, 316 struct ap_device_id *id, char *alias) 317 { 318 sprintf(alias, "ap:t%02X*", id->dev_type); 319 return 1; 320 } 321 322 /* looks like: "css:tN" */ 323 static int do_css_entry(const char *filename, 324 struct css_device_id *id, char *alias) 325 { 326 sprintf(alias, "css:t%01X", id->type); 327 return 1; 328 } 329 330 /* Looks like: "serio:tyNprNidNexN" */ 331 static int do_serio_entry(const char *filename, 332 struct serio_device_id *id, char *alias) 333 { 334 id->type = TO_NATIVE(id->type); 335 id->proto = TO_NATIVE(id->proto); 336 id->id = TO_NATIVE(id->id); 337 id->extra = TO_NATIVE(id->extra); 338 339 strcpy(alias, "serio:"); 340 ADD(alias, "ty", id->type != SERIO_ANY, id->type); 341 ADD(alias, "pr", id->proto != SERIO_ANY, id->proto); 342 ADD(alias, "id", id->id != SERIO_ANY, id->id); 343 ADD(alias, "ex", id->extra != SERIO_ANY, id->extra); 344 345 add_wildcard(alias); 346 return 1; 347 } 348 349 /* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */ 350 static int do_acpi_entry(const char *filename, 351 struct acpi_device_id *id, char *alias) 352 { 353 sprintf(alias, "acpi*:%s:*", id->id); 354 return 1; 355 } 356 357 /* looks like: "pnp:dD" */ 358 static void do_pnp_device_entry(void *symval, unsigned long size, 359 struct module *mod) 360 { 361 const unsigned long id_size = sizeof(struct pnp_device_id); 362 const unsigned int count = (size / id_size)-1; 363 const struct pnp_device_id *devs = symval; 364 unsigned int i; 365 366 device_id_check(mod->name, "pnp", size, id_size, symval); 367 368 for (i = 0; i < count; i++) { 369 const char *id = (char *)devs[i].id; 370 char acpi_id[sizeof(devs[0].id)]; 371 int j; 372 373 buf_printf(&mod->dev_table_buf, 374 "MODULE_ALIAS(\"pnp:d%s*\");\n", id); 375 376 /* fix broken pnp bus lowercasing */ 377 for (j = 0; j < sizeof(acpi_id); j++) 378 acpi_id[j] = toupper(id[j]); 379 buf_printf(&mod->dev_table_buf, 380 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id); 381 } 382 } 383 384 /* looks like: "pnp:dD" for every device of the card */ 385 static void do_pnp_card_entries(void *symval, unsigned long size, 386 struct module *mod) 387 { 388 const unsigned long id_size = sizeof(struct pnp_card_device_id); 389 const unsigned int count = (size / id_size)-1; 390 const struct pnp_card_device_id *cards = symval; 391 unsigned int i; 392 393 device_id_check(mod->name, "pnp", size, id_size, symval); 394 395 for (i = 0; i < count; i++) { 396 unsigned int j; 397 const struct pnp_card_device_id *card = &cards[i]; 398 399 for (j = 0; j < PNP_MAX_DEVICES; j++) { 400 const char *id = (char *)card->devs[j].id; 401 int i2, j2; 402 int dup = 0; 403 404 if (!id[0]) 405 break; 406 407 /* find duplicate, already added value */ 408 for (i2 = 0; i2 < i && !dup; i2++) { 409 const struct pnp_card_device_id *card2 = &cards[i2]; 410 411 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) { 412 const char *id2 = (char *)card2->devs[j2].id; 413 414 if (!id2[0]) 415 break; 416 417 if (!strcmp(id, id2)) { 418 dup = 1; 419 break; 420 } 421 } 422 } 423 424 /* add an individual alias for every device entry */ 425 if (!dup) { 426 char acpi_id[sizeof(card->devs[0].id)]; 427 int k; 428 429 buf_printf(&mod->dev_table_buf, 430 "MODULE_ALIAS(\"pnp:d%s*\");\n", id); 431 432 /* fix broken pnp bus lowercasing */ 433 for (k = 0; k < sizeof(acpi_id); k++) 434 acpi_id[k] = toupper(id[k]); 435 buf_printf(&mod->dev_table_buf, 436 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id); 437 } 438 } 439 } 440 } 441 442 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */ 443 static int do_pcmcia_entry(const char *filename, 444 struct pcmcia_device_id *id, char *alias) 445 { 446 unsigned int i; 447 448 id->match_flags = TO_NATIVE(id->match_flags); 449 id->manf_id = TO_NATIVE(id->manf_id); 450 id->card_id = TO_NATIVE(id->card_id); 451 id->func_id = TO_NATIVE(id->func_id); 452 id->function = TO_NATIVE(id->function); 453 id->device_no = TO_NATIVE(id->device_no); 454 455 for (i=0; i<4; i++) { 456 id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]); 457 } 458 459 strcpy(alias, "pcmcia:"); 460 ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID, 461 id->manf_id); 462 ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID, 463 id->card_id); 464 ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID, 465 id->func_id); 466 ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION, 467 id->function); 468 ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO, 469 id->device_no); 470 ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]); 471 ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]); 472 ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]); 473 ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]); 474 475 add_wildcard(alias); 476 return 1; 477 } 478 479 480 481 static int do_of_entry (const char *filename, struct of_device_id *of, char *alias) 482 { 483 int len; 484 char *tmp; 485 len = sprintf (alias, "of:N%sT%s", 486 of->name[0] ? of->name : "*", 487 of->type[0] ? of->type : "*"); 488 489 if (of->compatible[0]) 490 sprintf (&alias[len], "%sC%s", 491 of->type[0] ? "*" : "", 492 of->compatible); 493 494 /* Replace all whitespace with underscores */ 495 for (tmp = alias; tmp && *tmp; tmp++) 496 if (isspace (*tmp)) 497 *tmp = '_'; 498 499 add_wildcard(alias); 500 return 1; 501 } 502 503 static int do_vio_entry(const char *filename, struct vio_device_id *vio, 504 char *alias) 505 { 506 char *tmp; 507 508 sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*", 509 vio->compat[0] ? vio->compat : "*"); 510 511 /* Replace all whitespace with underscores */ 512 for (tmp = alias; tmp && *tmp; tmp++) 513 if (isspace (*tmp)) 514 *tmp = '_'; 515 516 add_wildcard(alias); 517 return 1; 518 } 519 520 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 521 522 static void do_input(char *alias, 523 kernel_ulong_t *arr, unsigned int min, unsigned int max) 524 { 525 unsigned int i; 526 527 for (i = min; i < max; i++) 528 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG))) 529 sprintf(alias + strlen(alias), "%X,*", i); 530 } 531 532 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */ 533 static int do_input_entry(const char *filename, struct input_device_id *id, 534 char *alias) 535 { 536 sprintf(alias, "input:"); 537 538 ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype); 539 ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor); 540 ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product); 541 ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version); 542 543 sprintf(alias + strlen(alias), "-e*"); 544 if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT) 545 do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX); 546 sprintf(alias + strlen(alias), "k*"); 547 if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT) 548 do_input(alias, id->keybit, 549 INPUT_DEVICE_ID_KEY_MIN_INTERESTING, 550 INPUT_DEVICE_ID_KEY_MAX); 551 sprintf(alias + strlen(alias), "r*"); 552 if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT) 553 do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX); 554 sprintf(alias + strlen(alias), "a*"); 555 if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT) 556 do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX); 557 sprintf(alias + strlen(alias), "m*"); 558 if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT) 559 do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX); 560 sprintf(alias + strlen(alias), "l*"); 561 if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT) 562 do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX); 563 sprintf(alias + strlen(alias), "s*"); 564 if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT) 565 do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX); 566 sprintf(alias + strlen(alias), "f*"); 567 if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT) 568 do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX); 569 sprintf(alias + strlen(alias), "w*"); 570 if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT) 571 do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX); 572 return 1; 573 } 574 575 static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa, 576 char *alias) 577 { 578 if (eisa->sig[0]) 579 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig); 580 else 581 strcat(alias, "*"); 582 return 1; 583 } 584 585 /* Looks like: parisc:tNhvNrevNsvN */ 586 static int do_parisc_entry(const char *filename, struct parisc_device_id *id, 587 char *alias) 588 { 589 id->hw_type = TO_NATIVE(id->hw_type); 590 id->hversion = TO_NATIVE(id->hversion); 591 id->hversion_rev = TO_NATIVE(id->hversion_rev); 592 id->sversion = TO_NATIVE(id->sversion); 593 594 strcpy(alias, "parisc:"); 595 ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type); 596 ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion); 597 ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev); 598 ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion); 599 600 add_wildcard(alias); 601 return 1; 602 } 603 604 /* Looks like: sdio:cNvNdN. */ 605 static int do_sdio_entry(const char *filename, 606 struct sdio_device_id *id, char *alias) 607 { 608 id->class = TO_NATIVE(id->class); 609 id->vendor = TO_NATIVE(id->vendor); 610 id->device = TO_NATIVE(id->device); 611 612 strcpy(alias, "sdio:"); 613 ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class); 614 ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor); 615 ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device); 616 add_wildcard(alias); 617 return 1; 618 } 619 620 /* Looks like: ssb:vNidNrevN. */ 621 static int do_ssb_entry(const char *filename, 622 struct ssb_device_id *id, char *alias) 623 { 624 id->vendor = TO_NATIVE(id->vendor); 625 id->coreid = TO_NATIVE(id->coreid); 626 id->revision = TO_NATIVE(id->revision); 627 628 strcpy(alias, "ssb:"); 629 ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor); 630 ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid); 631 ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision); 632 add_wildcard(alias); 633 return 1; 634 } 635 636 /* Looks like: virtio:dNvN */ 637 static int do_virtio_entry(const char *filename, struct virtio_device_id *id, 638 char *alias) 639 { 640 id->device = TO_NATIVE(id->device); 641 id->vendor = TO_NATIVE(id->vendor); 642 643 strcpy(alias, "virtio:"); 644 ADD(alias, "d", id->device != VIRTIO_DEV_ANY_ID, id->device); 645 ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor); 646 647 add_wildcard(alias); 648 return 1; 649 } 650 651 /* Looks like: i2c:S */ 652 static int do_i2c_entry(const char *filename, struct i2c_device_id *id, 653 char *alias) 654 { 655 sprintf(alias, I2C_MODULE_PREFIX "%s", id->name); 656 657 return 1; 658 } 659 660 /* Looks like: spi:S */ 661 static int do_spi_entry(const char *filename, struct spi_device_id *id, 662 char *alias) 663 { 664 sprintf(alias, SPI_MODULE_PREFIX "%s", id->name); 665 666 return 1; 667 } 668 669 static const struct dmifield { 670 const char *prefix; 671 int field; 672 } dmi_fields[] = { 673 { "bvn", DMI_BIOS_VENDOR }, 674 { "bvr", DMI_BIOS_VERSION }, 675 { "bd", DMI_BIOS_DATE }, 676 { "svn", DMI_SYS_VENDOR }, 677 { "pn", DMI_PRODUCT_NAME }, 678 { "pvr", DMI_PRODUCT_VERSION }, 679 { "rvn", DMI_BOARD_VENDOR }, 680 { "rn", DMI_BOARD_NAME }, 681 { "rvr", DMI_BOARD_VERSION }, 682 { "cvn", DMI_CHASSIS_VENDOR }, 683 { "ct", DMI_CHASSIS_TYPE }, 684 { "cvr", DMI_CHASSIS_VERSION }, 685 { NULL, DMI_NONE } 686 }; 687 688 static void dmi_ascii_filter(char *d, const char *s) 689 { 690 /* Filter out characters we don't want to see in the modalias string */ 691 for (; *s; s++) 692 if (*s > ' ' && *s < 127 && *s != ':') 693 *(d++) = *s; 694 695 *d = 0; 696 } 697 698 699 static int do_dmi_entry(const char *filename, struct dmi_system_id *id, 700 char *alias) 701 { 702 int i, j; 703 704 sprintf(alias, "dmi*"); 705 706 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) { 707 for (j = 0; j < 4; j++) { 708 if (id->matches[j].slot && 709 id->matches[j].slot == dmi_fields[i].field) { 710 sprintf(alias + strlen(alias), ":%s*", 711 dmi_fields[i].prefix); 712 dmi_ascii_filter(alias + strlen(alias), 713 id->matches[j].substr); 714 strcat(alias, "*"); 715 } 716 } 717 } 718 719 strcat(alias, ":"); 720 return 1; 721 } 722 723 static int do_platform_entry(const char *filename, 724 struct platform_device_id *id, char *alias) 725 { 726 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", id->name); 727 return 1; 728 } 729 730 /* Ignore any prefix, eg. some architectures prepend _ */ 731 static inline int sym_is(const char *symbol, const char *name) 732 { 733 const char *match; 734 735 match = strstr(symbol, name); 736 if (!match) 737 return 0; 738 return match[strlen(symbol)] == '\0'; 739 } 740 741 static void do_table(void *symval, unsigned long size, 742 unsigned long id_size, 743 const char *device_id, 744 void *function, 745 struct module *mod) 746 { 747 unsigned int i; 748 char alias[500]; 749 int (*do_entry)(const char *, void *entry, char *alias) = function; 750 751 device_id_check(mod->name, device_id, size, id_size, symval); 752 /* Leave last one: it's the terminator. */ 753 size -= id_size; 754 755 for (i = 0; i < size; i += id_size) { 756 if (do_entry(mod->name, symval+i, alias)) { 757 buf_printf(&mod->dev_table_buf, 758 "MODULE_ALIAS(\"%s\");\n", alias); 759 } 760 } 761 } 762 763 /* Create MODULE_ALIAS() statements. 764 * At this time, we cannot write the actual output C source yet, 765 * so we write into the mod->dev_table_buf buffer. */ 766 void handle_moddevtable(struct module *mod, struct elf_info *info, 767 Elf_Sym *sym, const char *symname) 768 { 769 void *symval; 770 char *zeros = NULL; 771 772 /* We're looking for a section relative symbol */ 773 if (!sym->st_shndx || sym->st_shndx >= info->hdr->e_shnum) 774 return; 775 776 /* Handle all-NULL symbols allocated into .bss */ 777 if (info->sechdrs[sym->st_shndx].sh_type & SHT_NOBITS) { 778 zeros = calloc(1, sym->st_size); 779 symval = zeros; 780 } else { 781 symval = (void *)info->hdr 782 + info->sechdrs[sym->st_shndx].sh_offset 783 + sym->st_value; 784 } 785 786 if (sym_is(symname, "__mod_pci_device_table")) 787 do_table(symval, sym->st_size, 788 sizeof(struct pci_device_id), "pci", 789 do_pci_entry, mod); 790 else if (sym_is(symname, "__mod_usb_device_table")) 791 /* special case to handle bcdDevice ranges */ 792 do_usb_table(symval, sym->st_size, mod); 793 else if (sym_is(symname, "__mod_hid_device_table")) 794 do_table(symval, sym->st_size, 795 sizeof(struct hid_device_id), "hid", 796 do_hid_entry, mod); 797 else if (sym_is(symname, "__mod_ieee1394_device_table")) 798 do_table(symval, sym->st_size, 799 sizeof(struct ieee1394_device_id), "ieee1394", 800 do_ieee1394_entry, mod); 801 else if (sym_is(symname, "__mod_ccw_device_table")) 802 do_table(symval, sym->st_size, 803 sizeof(struct ccw_device_id), "ccw", 804 do_ccw_entry, mod); 805 else if (sym_is(symname, "__mod_ap_device_table")) 806 do_table(symval, sym->st_size, 807 sizeof(struct ap_device_id), "ap", 808 do_ap_entry, mod); 809 else if (sym_is(symname, "__mod_css_device_table")) 810 do_table(symval, sym->st_size, 811 sizeof(struct css_device_id), "css", 812 do_css_entry, mod); 813 else if (sym_is(symname, "__mod_serio_device_table")) 814 do_table(symval, sym->st_size, 815 sizeof(struct serio_device_id), "serio", 816 do_serio_entry, mod); 817 else if (sym_is(symname, "__mod_acpi_device_table")) 818 do_table(symval, sym->st_size, 819 sizeof(struct acpi_device_id), "acpi", 820 do_acpi_entry, mod); 821 else if (sym_is(symname, "__mod_pnp_device_table")) 822 do_pnp_device_entry(symval, sym->st_size, mod); 823 else if (sym_is(symname, "__mod_pnp_card_device_table")) 824 do_pnp_card_entries(symval, sym->st_size, mod); 825 else if (sym_is(symname, "__mod_pcmcia_device_table")) 826 do_table(symval, sym->st_size, 827 sizeof(struct pcmcia_device_id), "pcmcia", 828 do_pcmcia_entry, mod); 829 else if (sym_is(symname, "__mod_of_device_table")) 830 do_table(symval, sym->st_size, 831 sizeof(struct of_device_id), "of", 832 do_of_entry, mod); 833 else if (sym_is(symname, "__mod_vio_device_table")) 834 do_table(symval, sym->st_size, 835 sizeof(struct vio_device_id), "vio", 836 do_vio_entry, mod); 837 else if (sym_is(symname, "__mod_input_device_table")) 838 do_table(symval, sym->st_size, 839 sizeof(struct input_device_id), "input", 840 do_input_entry, mod); 841 else if (sym_is(symname, "__mod_eisa_device_table")) 842 do_table(symval, sym->st_size, 843 sizeof(struct eisa_device_id), "eisa", 844 do_eisa_entry, mod); 845 else if (sym_is(symname, "__mod_parisc_device_table")) 846 do_table(symval, sym->st_size, 847 sizeof(struct parisc_device_id), "parisc", 848 do_parisc_entry, mod); 849 else if (sym_is(symname, "__mod_sdio_device_table")) 850 do_table(symval, sym->st_size, 851 sizeof(struct sdio_device_id), "sdio", 852 do_sdio_entry, mod); 853 else if (sym_is(symname, "__mod_ssb_device_table")) 854 do_table(symval, sym->st_size, 855 sizeof(struct ssb_device_id), "ssb", 856 do_ssb_entry, mod); 857 else if (sym_is(symname, "__mod_virtio_device_table")) 858 do_table(symval, sym->st_size, 859 sizeof(struct virtio_device_id), "virtio", 860 do_virtio_entry, mod); 861 else if (sym_is(symname, "__mod_i2c_device_table")) 862 do_table(symval, sym->st_size, 863 sizeof(struct i2c_device_id), "i2c", 864 do_i2c_entry, mod); 865 else if (sym_is(symname, "__mod_spi_device_table")) 866 do_table(symval, sym->st_size, 867 sizeof(struct spi_device_id), "spi", 868 do_spi_entry, mod); 869 else if (sym_is(symname, "__mod_dmi_device_table")) 870 do_table(symval, sym->st_size, 871 sizeof(struct dmi_system_id), "dmi", 872 do_dmi_entry, mod); 873 else if (sym_is(symname, "__mod_platform_device_table")) 874 do_table(symval, sym->st_size, 875 sizeof(struct platform_device_id), "platform", 876 do_platform_entry, mod); 877 free(zeros); 878 } 879 880 /* Now add out buffered information to the generated C source */ 881 void add_moddevtable(struct buffer *buf, struct module *mod) 882 { 883 buf_printf(buf, "\n"); 884 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos); 885 free(mod->dev_table_buf.p); 886 } 887