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