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 18typedef Elf32_Addr kernel_ulong_t; 19#define BITS_PER_LONG 32 20#else 21typedef 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 32typedef uint32_t __u32; 33typedef uint16_t __u16; 34typedef 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) \ 42do { \ 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 */ 55static inline void add_wildcard(char *str) 56{ 57 int len = strlen(str); 58 59 if (str[len - 1] != '*') 60 strcat(str + len, "*"); 61} 62 63unsigned 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 **/ 71static 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" */ 104static 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 unsigned char max, 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), "%X", range_lo); 122 else if (range_lo > 0 || range_hi < max) { 123 if (range_lo > 0x9 || range_hi < 0xA) 124 sprintf(alias + strlen(alias), 125 "[%X-%X]", 126 range_lo, 127 range_hi); 128 else { 129 sprintf(alias + strlen(alias), 130 range_lo < 0x9 ? "[%X-9" : "[%X", 131 range_lo); 132 sprintf(alias + strlen(alias), 133 range_hi > 0xA ? "a-%X]" : "%X]", 134 range_lo); 135 } 136 } 137 if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1)) 138 strcat(alias, "*"); 139 140 ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS, 141 id->bDeviceClass); 142 ADD(alias, "dsc", 143 id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS, 144 id->bDeviceSubClass); 145 ADD(alias, "dp", 146 id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL, 147 id->bDeviceProtocol); 148 ADD(alias, "ic", 149 id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS, 150 id->bInterfaceClass); 151 ADD(alias, "isc", 152 id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS, 153 id->bInterfaceSubClass); 154 ADD(alias, "ip", 155 id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL, 156 id->bInterfaceProtocol); 157 158 add_wildcard(alias); 159 buf_printf(&mod->dev_table_buf, 160 "MODULE_ALIAS(\"%s\");\n", alias); 161} 162 163/* Handles increment/decrement of BCD formatted integers */ 164/* Returns the previous value, so it works like i++ or i-- */ 165static unsigned int incbcd(unsigned int *bcd, 166 int inc, 167 unsigned char max, 168 size_t chars) 169{ 170 unsigned int init = *bcd, i, j; 171 unsigned long long c, dec = 0; 172 173 /* If bcd is not in BCD format, just increment */ 174 if (max > 0x9) { 175 *bcd += inc; 176 return init; 177 } 178 179 /* Convert BCD to Decimal */ 180 for (i=0 ; i < chars ; i++) { 181 c = (*bcd >> (i << 2)) & 0xf; 182 c = c > 9 ? 9 : c; /* force to bcd just in case */ 183 for (j=0 ; j < i ; j++) 184 c = c * 10; 185 dec += c; 186 } 187 188 /* Do our increment/decrement */ 189 dec += inc; 190 *bcd = 0; 191 192 /* Convert back to BCD */ 193 for (i=0 ; i < chars ; i++) { 194 for (c=1,j=0 ; j < i ; j++) 195 c = c * 10; 196 c = (dec / c) % 10; 197 *bcd += c << (i << 2); 198 } 199 return init; 200} 201 202static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod) 203{ 204 unsigned int devlo, devhi; 205 unsigned char chi, clo, max; 206 int ndigits; 207 208 id->match_flags = TO_NATIVE(id->match_flags); 209 id->idVendor = TO_NATIVE(id->idVendor); 210 id->idProduct = TO_NATIVE(id->idProduct); 211 212 devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ? 213 TO_NATIVE(id->bcdDevice_lo) : 0x0U; 214 devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ? 215 TO_NATIVE(id->bcdDevice_hi) : ~0x0U; 216 217 /* Figure out if this entry is in bcd or hex format */ 218 max = 0x9; /* Default to decimal format */ 219 for (ndigits = 0 ; ndigits < sizeof(id->bcdDevice_lo) * 2 ; ndigits++) { 220 clo = (devlo >> (ndigits << 2)) & 0xf; 221 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf; 222 if (clo > max || chi > max) { 223 max = 0xf; 224 break; 225 } 226 } 227 228 /* 229 * Some modules (visor) have empty slots as placeholder for 230 * run-time specification that results in catch-all alias 231 */ 232 if (!(id->idVendor | id->idProduct | id->bDeviceClass | id->bInterfaceClass)) 233 return; 234 235 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */ 236 for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) { 237 clo = devlo & 0xf; 238 chi = devhi & 0xf; 239 if (chi > max) /* If we are in bcd mode, truncate if necessary */ 240 chi = max; 241 devlo >>= 4; 242 devhi >>= 4; 243 244 if (devlo == devhi || !ndigits) { 245 do_usb_entry(id, devlo, ndigits, clo, chi, max, mod); 246 break; 247 } 248 249 if (clo > 0x0) 250 do_usb_entry(id, 251 incbcd(&devlo, 1, max, 252 sizeof(id->bcdDevice_lo) * 2), 253 ndigits, clo, max, max, mod); 254 255 if (chi < max) 256 do_usb_entry(id, 257 incbcd(&devhi, -1, max, 258 sizeof(id->bcdDevice_lo) * 2), 259 ndigits, 0x0, chi, max, mod); 260 } 261} 262 263static void do_usb_table(void *symval, unsigned long size, 264 struct module *mod) 265{ 266 unsigned int i; 267 const unsigned long id_size = sizeof(struct usb_device_id); 268 269 device_id_check(mod->name, "usb", size, id_size, symval); 270 271 /* Leave last one: it's the terminator. */ 272 size -= id_size; 273 274 for (i = 0; i < size; i += id_size) 275 do_usb_entry_multi(symval + i, mod); 276} 277 278/* Looks like: hid:bNvNpN */ 279static int do_hid_entry(const char *filename, 280 struct hid_device_id *id, char *alias) 281{ 282 id->bus = TO_NATIVE(id->bus); 283 id->vendor = TO_NATIVE(id->vendor); 284 id->product = TO_NATIVE(id->product); 285 286 sprintf(alias, "hid:b%04X", id->bus); 287 ADD(alias, "v", id->vendor != HID_ANY_ID, id->vendor); 288 ADD(alias, "p", id->product != HID_ANY_ID, id->product); 289 290 return 1; 291} 292 293/* Looks like: ieee1394:venNmoNspNverN */ 294static int do_ieee1394_entry(const char *filename, 295 struct ieee1394_device_id *id, char *alias) 296{ 297 id->match_flags = TO_NATIVE(id->match_flags); 298 id->vendor_id = TO_NATIVE(id->vendor_id); 299 id->model_id = TO_NATIVE(id->model_id); 300 id->specifier_id = TO_NATIVE(id->specifier_id); 301 id->version = TO_NATIVE(id->version); 302 303 strcpy(alias, "ieee1394:"); 304 ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID, 305 id->vendor_id); 306 ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID, 307 id->model_id); 308 ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID, 309 id->specifier_id); 310 ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION, 311 id->version); 312 313 add_wildcard(alias); 314 return 1; 315} 316 317/* Looks like: pci:vNdNsvNsdNbcNscNiN. */ 318static int do_pci_entry(const char *filename, 319 struct pci_device_id *id, char *alias) 320{ 321 /* Class field can be divided into these three. */ 322 unsigned char baseclass, subclass, interface, 323 baseclass_mask, subclass_mask, interface_mask; 324 325 id->vendor = TO_NATIVE(id->vendor); 326 id->device = TO_NATIVE(id->device); 327 id->subvendor = TO_NATIVE(id->subvendor); 328 id->subdevice = TO_NATIVE(id->subdevice); 329 id->class = TO_NATIVE(id->class); 330 id->class_mask = TO_NATIVE(id->class_mask); 331 332 strcpy(alias, "pci:"); 333 ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor); 334 ADD(alias, "d", id->device != PCI_ANY_ID, id->device); 335 ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor); 336 ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice); 337 338 baseclass = (id->class) >> 16; 339 baseclass_mask = (id->class_mask) >> 16; 340 subclass = (id->class) >> 8; 341 subclass_mask = (id->class_mask) >> 8; 342 interface = id->class; 343 interface_mask = id->class_mask; 344 345 if ((baseclass_mask != 0 && baseclass_mask != 0xFF) 346 || (subclass_mask != 0 && subclass_mask != 0xFF) 347 || (interface_mask != 0 && interface_mask != 0xFF)) { 348 warn("Can't handle masks in %s:%04X\n", 349 filename, id->class_mask); 350 return 0; 351 } 352 353 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass); 354 ADD(alias, "sc", subclass_mask == 0xFF, subclass); 355 ADD(alias, "i", interface_mask == 0xFF, interface); 356 add_wildcard(alias); 357 return 1; 358} 359 360/* looks like: "ccw:tNmNdtNdmN" */ 361static int do_ccw_entry(const char *filename, 362 struct ccw_device_id *id, char *alias) 363{ 364 id->match_flags = TO_NATIVE(id->match_flags); 365 id->cu_type = TO_NATIVE(id->cu_type); 366 id->cu_model = TO_NATIVE(id->cu_model); 367 id->dev_type = TO_NATIVE(id->dev_type); 368 id->dev_model = TO_NATIVE(id->dev_model); 369 370 strcpy(alias, "ccw:"); 371 ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE, 372 id->cu_type); 373 ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL, 374 id->cu_model); 375 ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE, 376 id->dev_type); 377 ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL, 378 id->dev_model); 379 add_wildcard(alias); 380 return 1; 381} 382 383/* looks like: "ap:tN" */ 384static int do_ap_entry(const char *filename, 385 struct ap_device_id *id, char *alias) 386{ 387 sprintf(alias, "ap:t%02X*", id->dev_type); 388 return 1; 389} 390 391/* looks like: "css:tN" */ 392static int do_css_entry(const char *filename, 393 struct css_device_id *id, char *alias) 394{ 395 sprintf(alias, "css:t%01X", id->type); 396 return 1; 397} 398 399/* Looks like: "serio:tyNprNidNexN" */ 400static int do_serio_entry(const char *filename, 401 struct serio_device_id *id, char *alias) 402{ 403 id->type = TO_NATIVE(id->type); 404 id->proto = TO_NATIVE(id->proto); 405 id->id = TO_NATIVE(id->id); 406 id->extra = TO_NATIVE(id->extra); 407 408 strcpy(alias, "serio:"); 409 ADD(alias, "ty", id->type != SERIO_ANY, id->type); 410 ADD(alias, "pr", id->proto != SERIO_ANY, id->proto); 411 ADD(alias, "id", id->id != SERIO_ANY, id->id); 412 ADD(alias, "ex", id->extra != SERIO_ANY, id->extra); 413 414 add_wildcard(alias); 415 return 1; 416} 417 418/* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */ 419static int do_acpi_entry(const char *filename, 420 struct acpi_device_id *id, char *alias) 421{ 422 sprintf(alias, "acpi*:%s:*", id->id); 423 return 1; 424} 425 426/* looks like: "pnp:dD" */ 427static void do_pnp_device_entry(void *symval, unsigned long size, 428 struct module *mod) 429{ 430 const unsigned long id_size = sizeof(struct pnp_device_id); 431 const unsigned int count = (size / id_size)-1; 432 const struct pnp_device_id *devs = symval; 433 unsigned int i; 434 435 device_id_check(mod->name, "pnp", size, id_size, symval); 436 437 for (i = 0; i < count; i++) { 438 const char *id = (char *)devs[i].id; 439 char acpi_id[sizeof(devs[0].id)]; 440 int j; 441 442 buf_printf(&mod->dev_table_buf, 443 "MODULE_ALIAS(\"pnp:d%s*\");\n", id); 444 445 /* fix broken pnp bus lowercasing */ 446 for (j = 0; j < sizeof(acpi_id); j++) 447 acpi_id[j] = toupper(id[j]); 448 buf_printf(&mod->dev_table_buf, 449 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id); 450 } 451} 452 453/* looks like: "pnp:dD" for every device of the card */ 454static void do_pnp_card_entries(void *symval, unsigned long size, 455 struct module *mod) 456{ 457 const unsigned long id_size = sizeof(struct pnp_card_device_id); 458 const unsigned int count = (size / id_size)-1; 459 const struct pnp_card_device_id *cards = symval; 460 unsigned int i; 461 462 device_id_check(mod->name, "pnp", size, id_size, symval); 463 464 for (i = 0; i < count; i++) { 465 unsigned int j; 466 const struct pnp_card_device_id *card = &cards[i]; 467 468 for (j = 0; j < PNP_MAX_DEVICES; j++) { 469 const char *id = (char *)card->devs[j].id; 470 int i2, j2; 471 int dup = 0; 472 473 if (!id[0]) 474 break; 475 476 /* find duplicate, already added value */ 477 for (i2 = 0; i2 < i && !dup; i2++) { 478 const struct pnp_card_device_id *card2 = &cards[i2]; 479 480 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) { 481 const char *id2 = (char *)card2->devs[j2].id; 482 483 if (!id2[0]) 484 break; 485 486 if (!strcmp(id, id2)) { 487 dup = 1; 488 break; 489 } 490 } 491 } 492 493 /* add an individual alias for every device entry */ 494 if (!dup) { 495 char acpi_id[sizeof(card->devs[0].id)]; 496 int k; 497 498 buf_printf(&mod->dev_table_buf, 499 "MODULE_ALIAS(\"pnp:d%s*\");\n", id); 500 501 /* fix broken pnp bus lowercasing */ 502 for (k = 0; k < sizeof(acpi_id); k++) 503 acpi_id[k] = toupper(id[k]); 504 buf_printf(&mod->dev_table_buf, 505 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id); 506 } 507 } 508 } 509} 510 511/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */ 512static int do_pcmcia_entry(const char *filename, 513 struct pcmcia_device_id *id, char *alias) 514{ 515 unsigned int i; 516 517 id->match_flags = TO_NATIVE(id->match_flags); 518 id->manf_id = TO_NATIVE(id->manf_id); 519 id->card_id = TO_NATIVE(id->card_id); 520 id->func_id = TO_NATIVE(id->func_id); 521 id->function = TO_NATIVE(id->function); 522 id->device_no = TO_NATIVE(id->device_no); 523 524 for (i=0; i<4; i++) { 525 id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]); 526 } 527 528 strcpy(alias, "pcmcia:"); 529 ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID, 530 id->manf_id); 531 ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID, 532 id->card_id); 533 ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID, 534 id->func_id); 535 ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION, 536 id->function); 537 ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO, 538 id->device_no); 539 ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]); 540 ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]); 541 ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]); 542 ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]); 543 544 add_wildcard(alias); 545 return 1; 546} 547 548 549 550static int do_of_entry (const char *filename, struct of_device_id *of, char *alias) 551{ 552 int len; 553 char *tmp; 554 len = sprintf (alias, "of:N%sT%s", 555 of->name[0] ? of->name : "*", 556 of->type[0] ? of->type : "*"); 557 558 if (of->compatible[0]) 559 sprintf (&alias[len], "%sC%s", 560 of->type[0] ? "*" : "", 561 of->compatible); 562 563 /* Replace all whitespace with underscores */ 564 for (tmp = alias; tmp && *tmp; tmp++) 565 if (isspace (*tmp)) 566 *tmp = '_'; 567 568 add_wildcard(alias); 569 return 1; 570} 571 572static int do_vio_entry(const char *filename, struct vio_device_id *vio, 573 char *alias) 574{ 575 char *tmp; 576 577 sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*", 578 vio->compat[0] ? vio->compat : "*"); 579 580 /* Replace all whitespace with underscores */ 581 for (tmp = alias; tmp && *tmp; tmp++) 582 if (isspace (*tmp)) 583 *tmp = '_'; 584 585 add_wildcard(alias); 586 return 1; 587} 588 589#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 590 591static void do_input(char *alias, 592 kernel_ulong_t *arr, unsigned int min, unsigned int max) 593{ 594 unsigned int i; 595 596 for (i = min; i < max; i++) 597 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG))) 598 sprintf(alias + strlen(alias), "%X,*", i); 599} 600 601/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */ 602static int do_input_entry(const char *filename, struct input_device_id *id, 603 char *alias) 604{ 605 sprintf(alias, "input:"); 606 607 ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype); 608 ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor); 609 ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product); 610 ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version); 611 612 sprintf(alias + strlen(alias), "-e*"); 613 if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT) 614 do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX); 615 sprintf(alias + strlen(alias), "k*"); 616 if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT) 617 do_input(alias, id->keybit, 618 INPUT_DEVICE_ID_KEY_MIN_INTERESTING, 619 INPUT_DEVICE_ID_KEY_MAX); 620 sprintf(alias + strlen(alias), "r*"); 621 if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT) 622 do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX); 623 sprintf(alias + strlen(alias), "a*"); 624 if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT) 625 do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX); 626 sprintf(alias + strlen(alias), "m*"); 627 if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT) 628 do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX); 629 sprintf(alias + strlen(alias), "l*"); 630 if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT) 631 do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX); 632 sprintf(alias + strlen(alias), "s*"); 633 if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT) 634 do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX); 635 sprintf(alias + strlen(alias), "f*"); 636 if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT) 637 do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX); 638 sprintf(alias + strlen(alias), "w*"); 639 if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT) 640 do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX); 641 return 1; 642} 643 644static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa, 645 char *alias) 646{ 647 if (eisa->sig[0]) 648 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig); 649 else 650 strcat(alias, "*"); 651 return 1; 652} 653 654/* Looks like: parisc:tNhvNrevNsvN */ 655static int do_parisc_entry(const char *filename, struct parisc_device_id *id, 656 char *alias) 657{ 658 id->hw_type = TO_NATIVE(id->hw_type); 659 id->hversion = TO_NATIVE(id->hversion); 660 id->hversion_rev = TO_NATIVE(id->hversion_rev); 661 id->sversion = TO_NATIVE(id->sversion); 662 663 strcpy(alias, "parisc:"); 664 ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type); 665 ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion); 666 ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev); 667 ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion); 668 669 add_wildcard(alias); 670 return 1; 671} 672 673/* Looks like: sdio:cNvNdN. */ 674static int do_sdio_entry(const char *filename, 675 struct sdio_device_id *id, char *alias) 676{ 677 id->class = TO_NATIVE(id->class); 678 id->vendor = TO_NATIVE(id->vendor); 679 id->device = TO_NATIVE(id->device); 680 681 strcpy(alias, "sdio:"); 682 ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class); 683 ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor); 684 ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device); 685 add_wildcard(alias); 686 return 1; 687} 688 689/* Looks like: ssb:vNidNrevN. */ 690static int do_ssb_entry(const char *filename, 691 struct ssb_device_id *id, char *alias) 692{ 693 id->vendor = TO_NATIVE(id->vendor); 694 id->coreid = TO_NATIVE(id->coreid); 695 id->revision = TO_NATIVE(id->revision); 696 697 strcpy(alias, "ssb:"); 698 ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor); 699 ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid); 700 ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision); 701 add_wildcard(alias); 702 return 1; 703} 704 705/* Looks like: virtio:dNvN */ 706static int do_virtio_entry(const char *filename, struct virtio_device_id *id, 707 char *alias) 708{ 709 id->device = TO_NATIVE(id->device); 710 id->vendor = TO_NATIVE(id->vendor); 711 712 strcpy(alias, "virtio:"); 713 ADD(alias, "d", id->device != VIRTIO_DEV_ANY_ID, id->device); 714 ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor); 715 716 add_wildcard(alias); 717 return 1; 718} 719 720/* Looks like: i2c:S */ 721static int do_i2c_entry(const char *filename, struct i2c_device_id *id, 722 char *alias) 723{ 724 sprintf(alias, I2C_MODULE_PREFIX "%s", id->name); 725 726 return 1; 727} 728 729/* Looks like: spi:S */ 730static int do_spi_entry(const char *filename, struct spi_device_id *id, 731 char *alias) 732{ 733 sprintf(alias, SPI_MODULE_PREFIX "%s", id->name); 734 735 return 1; 736} 737 738static const struct dmifield { 739 const char *prefix; 740 int field; 741} dmi_fields[] = { 742 { "bvn", DMI_BIOS_VENDOR }, 743 { "bvr", DMI_BIOS_VERSION }, 744 { "bd", DMI_BIOS_DATE }, 745 { "svn", DMI_SYS_VENDOR }, 746 { "pn", DMI_PRODUCT_NAME }, 747 { "pvr", DMI_PRODUCT_VERSION }, 748 { "rvn", DMI_BOARD_VENDOR }, 749 { "rn", DMI_BOARD_NAME }, 750 { "rvr", DMI_BOARD_VERSION }, 751 { "cvn", DMI_CHASSIS_VENDOR }, 752 { "ct", DMI_CHASSIS_TYPE }, 753 { "cvr", DMI_CHASSIS_VERSION }, 754 { NULL, DMI_NONE } 755}; 756 757static void dmi_ascii_filter(char *d, const char *s) 758{ 759 /* Filter out characters we don't want to see in the modalias string */ 760 for (; *s; s++) 761 if (*s > ' ' && *s < 127 && *s != ':') 762 *(d++) = *s; 763 764 *d = 0; 765} 766 767 768static int do_dmi_entry(const char *filename, struct dmi_system_id *id, 769 char *alias) 770{ 771 int i, j; 772 773 sprintf(alias, "dmi*"); 774 775 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) { 776 for (j = 0; j < 4; j++) { 777 if (id->matches[j].slot && 778 id->matches[j].slot == dmi_fields[i].field) { 779 sprintf(alias + strlen(alias), ":%s*", 780 dmi_fields[i].prefix); 781 dmi_ascii_filter(alias + strlen(alias), 782 id->matches[j].substr); 783 strcat(alias, "*"); 784 } 785 } 786 } 787 788 strcat(alias, ":"); 789 return 1; 790} 791 792static int do_platform_entry(const char *filename, 793 struct platform_device_id *id, char *alias) 794{ 795 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", id->name); 796 return 1; 797} 798 799static int do_mdio_entry(const char *filename, 800 struct mdio_device_id *id, char *alias) 801{ 802 int i; 803 804 alias += sprintf(alias, MDIO_MODULE_PREFIX); 805 806 for (i = 0; i < 32; i++) { 807 if (!((id->phy_id_mask >> (31-i)) & 1)) 808 *(alias++) = '?'; 809 else if ((id->phy_id >> (31-i)) & 1) 810 *(alias++) = '1'; 811 else 812 *(alias++) = '0'; 813 } 814 815 /* Terminate the string */ 816 *alias = 0; 817 818 return 1; 819} 820 821/* Looks like: zorro:iN. */ 822static int do_zorro_entry(const char *filename, struct zorro_device_id *id, 823 char *alias) 824{ 825 id->id = TO_NATIVE(id->id); 826 strcpy(alias, "zorro:"); 827 ADD(alias, "i", id->id != ZORRO_WILDCARD, id->id); 828 return 1; 829} 830 831/* looks like: "pnp:dD" */ 832static int do_isapnp_entry(const char *filename, 833 struct isapnp_device_id *id, char *alias) 834{ 835 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*", 836 'A' + ((id->vendor >> 2) & 0x3f) - 1, 837 'A' + (((id->vendor & 3) << 3) | ((id->vendor >> 13) & 7)) - 1, 838 'A' + ((id->vendor >> 8) & 0x1f) - 1, 839 (id->function >> 4) & 0x0f, id->function & 0x0f, 840 (id->function >> 12) & 0x0f, (id->function >> 8) & 0x0f); 841 return 1; 842} 843 844/* Ignore any prefix, eg. some architectures prepend _ */ 845static inline int sym_is(const char *symbol, const char *name) 846{ 847 const char *match; 848 849 match = strstr(symbol, name); 850 if (!match) 851 return 0; 852 return match[strlen(name)] == '\0'; 853} 854 855static void do_table(void *symval, unsigned long size, 856 unsigned long id_size, 857 const char *device_id, 858 void *function, 859 struct module *mod) 860{ 861 unsigned int i; 862 char alias[500]; 863 int (*do_entry)(const char *, void *entry, char *alias) = function; 864 865 device_id_check(mod->name, device_id, size, id_size, symval); 866 /* Leave last one: it's the terminator. */ 867 size -= id_size; 868 869 for (i = 0; i < size; i += id_size) { 870 if (do_entry(mod->name, symval+i, alias)) { 871 buf_printf(&mod->dev_table_buf, 872 "MODULE_ALIAS(\"%s\");\n", alias); 873 } 874 } 875} 876 877/* Create MODULE_ALIAS() statements. 878 * At this time, we cannot write the actual output C source yet, 879 * so we write into the mod->dev_table_buf buffer. */ 880void handle_moddevtable(struct module *mod, struct elf_info *info, 881 Elf_Sym *sym, const char *symname) 882{ 883 void *symval; 884 char *zeros = NULL; 885 886 /* We're looking for a section relative symbol */ 887 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections) 888 return; 889 890 /* Handle all-NULL symbols allocated into .bss */ 891 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) { 892 zeros = calloc(1, sym->st_size); 893 symval = zeros; 894 } else { 895 symval = (void *)info->hdr 896 + info->sechdrs[get_secindex(info, sym)].sh_offset 897 + sym->st_value; 898 } 899 900 if (sym_is(symname, "__mod_pci_device_table")) 901 do_table(symval, sym->st_size, 902 sizeof(struct pci_device_id), "pci", 903 do_pci_entry, mod); 904 else if (sym_is(symname, "__mod_usb_device_table")) 905 /* special case to handle bcdDevice ranges */ 906 do_usb_table(symval, sym->st_size, mod); 907 else if (sym_is(symname, "__mod_hid_device_table")) 908 do_table(symval, sym->st_size, 909 sizeof(struct hid_device_id), "hid", 910 do_hid_entry, mod); 911 else if (sym_is(symname, "__mod_ieee1394_device_table")) 912 do_table(symval, sym->st_size, 913 sizeof(struct ieee1394_device_id), "ieee1394", 914 do_ieee1394_entry, mod); 915 else if (sym_is(symname, "__mod_ccw_device_table")) 916 do_table(symval, sym->st_size, 917 sizeof(struct ccw_device_id), "ccw", 918 do_ccw_entry, mod); 919 else if (sym_is(symname, "__mod_ap_device_table")) 920 do_table(symval, sym->st_size, 921 sizeof(struct ap_device_id), "ap", 922 do_ap_entry, mod); 923 else if (sym_is(symname, "__mod_css_device_table")) 924 do_table(symval, sym->st_size, 925 sizeof(struct css_device_id), "css", 926 do_css_entry, mod); 927 else if (sym_is(symname, "__mod_serio_device_table")) 928 do_table(symval, sym->st_size, 929 sizeof(struct serio_device_id), "serio", 930 do_serio_entry, mod); 931 else if (sym_is(symname, "__mod_acpi_device_table")) 932 do_table(symval, sym->st_size, 933 sizeof(struct acpi_device_id), "acpi", 934 do_acpi_entry, mod); 935 else if (sym_is(symname, "__mod_pnp_device_table")) 936 do_pnp_device_entry(symval, sym->st_size, mod); 937 else if (sym_is(symname, "__mod_pnp_card_device_table")) 938 do_pnp_card_entries(symval, sym->st_size, mod); 939 else if (sym_is(symname, "__mod_pcmcia_device_table")) 940 do_table(symval, sym->st_size, 941 sizeof(struct pcmcia_device_id), "pcmcia", 942 do_pcmcia_entry, mod); 943 else if (sym_is(symname, "__mod_of_device_table")) 944 do_table(symval, sym->st_size, 945 sizeof(struct of_device_id), "of", 946 do_of_entry, mod); 947 else if (sym_is(symname, "__mod_vio_device_table")) 948 do_table(symval, sym->st_size, 949 sizeof(struct vio_device_id), "vio", 950 do_vio_entry, mod); 951 else if (sym_is(symname, "__mod_input_device_table")) 952 do_table(symval, sym->st_size, 953 sizeof(struct input_device_id), "input", 954 do_input_entry, mod); 955 else if (sym_is(symname, "__mod_eisa_device_table")) 956 do_table(symval, sym->st_size, 957 sizeof(struct eisa_device_id), "eisa", 958 do_eisa_entry, mod); 959 else if (sym_is(symname, "__mod_parisc_device_table")) 960 do_table(symval, sym->st_size, 961 sizeof(struct parisc_device_id), "parisc", 962 do_parisc_entry, mod); 963 else if (sym_is(symname, "__mod_sdio_device_table")) 964 do_table(symval, sym->st_size, 965 sizeof(struct sdio_device_id), "sdio", 966 do_sdio_entry, mod); 967 else if (sym_is(symname, "__mod_ssb_device_table")) 968 do_table(symval, sym->st_size, 969 sizeof(struct ssb_device_id), "ssb", 970 do_ssb_entry, mod); 971 else if (sym_is(symname, "__mod_virtio_device_table")) 972 do_table(symval, sym->st_size, 973 sizeof(struct virtio_device_id), "virtio", 974 do_virtio_entry, mod); 975 else if (sym_is(symname, "__mod_i2c_device_table")) 976 do_table(symval, sym->st_size, 977 sizeof(struct i2c_device_id), "i2c", 978 do_i2c_entry, mod); 979 else if (sym_is(symname, "__mod_spi_device_table")) 980 do_table(symval, sym->st_size, 981 sizeof(struct spi_device_id), "spi", 982 do_spi_entry, mod); 983 else if (sym_is(symname, "__mod_dmi_device_table")) 984 do_table(symval, sym->st_size, 985 sizeof(struct dmi_system_id), "dmi", 986 do_dmi_entry, mod); 987 else if (sym_is(symname, "__mod_platform_device_table")) 988 do_table(symval, sym->st_size, 989 sizeof(struct platform_device_id), "platform", 990 do_platform_entry, mod); 991 else if (sym_is(symname, "__mod_mdio_device_table")) 992 do_table(symval, sym->st_size, 993 sizeof(struct mdio_device_id), "mdio", 994 do_mdio_entry, mod); 995 else if (sym_is(symname, "__mod_zorro_device_table")) 996 do_table(symval, sym->st_size, 997 sizeof(struct zorro_device_id), "zorro", 998 do_zorro_entry, mod); 999 else if (sym_is(symname, "__mod_isapnp_device_table")) 1000 do_table(symval, sym->st_size, 1001 sizeof(struct isapnp_device_id), "isa", 1002 do_isapnp_entry, mod); 1003 free(zeros); 1004} 1005 1006/* Now add out buffered information to the generated C source */ 1007void add_moddevtable(struct buffer *buf, struct module *mod) 1008{ 1009 buf_printf(buf, "\n"); 1010 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos); 1011 free(mod->dev_table_buf.p); 1012} 1013