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 <stdarg.h> 14 #include <stdio.h> 15 16 #include "list.h" 17 #include "xalloc.h" 18 19 #include "modpost.h" 20 #include "devicetable-offsets.h" 21 22 /* We use the ELF typedefs for kernel_ulong_t but bite the bullet and 23 * use either stdint.h or inttypes.h for the rest. */ 24 #if KERNEL_ELFCLASS == ELFCLASS32 25 typedef Elf32_Addr kernel_ulong_t; 26 #define BITS_PER_LONG 32 27 #else 28 typedef Elf64_Addr kernel_ulong_t; 29 #define BITS_PER_LONG 64 30 #endif 31 #ifdef __sun__ 32 #include <inttypes.h> 33 #else 34 #include <stdint.h> 35 #endif 36 37 #include <ctype.h> 38 #include <stdbool.h> 39 40 /** 41 * module_alias_printf - add auto-generated MODULE_ALIAS() 42 * 43 * @mod: module 44 * @append_wildcard: append '*' for future extension if not exist yet 45 * @fmt: printf(3)-like format 46 */ 47 static void __attribute__((format (printf, 3, 4))) 48 module_alias_printf(struct module *mod, bool append_wildcard, 49 const char *fmt, ...) 50 { 51 struct module_alias *new, *als; 52 size_t len; 53 int n; 54 va_list ap; 55 56 /* Determine required size. */ 57 va_start(ap, fmt); 58 n = vsnprintf(NULL, 0, fmt, ap); 59 va_end(ap); 60 61 if (n < 0) { 62 error("vsnprintf failed\n"); 63 return; 64 } 65 66 len = n + 1; /* extra byte for '\0' */ 67 68 if (append_wildcard) 69 len++; /* extra byte for '*' */ 70 71 new = xmalloc(sizeof(*new) + len); 72 73 /* Now, really print it to the allocated buffer */ 74 va_start(ap, fmt); 75 n = vsnprintf(new->str, len, fmt, ap); 76 va_end(ap); 77 78 if (n < 0) { 79 error("vsnprintf failed\n"); 80 free(new); 81 return; 82 } 83 84 if (append_wildcard && (n == 0 || new->str[n - 1] != '*')) { 85 new->str[n] = '*'; 86 new->str[n + 1] = '\0'; 87 } 88 89 /* avoid duplication */ 90 list_for_each_entry(als, &mod->aliases, node) { 91 if (!strcmp(als->str, new->str)) { 92 free(new); 93 return; 94 } 95 } 96 97 list_add_tail(&new->node, &mod->aliases); 98 } 99 100 typedef uint32_t __u32; 101 typedef uint16_t __u16; 102 typedef unsigned char __u8; 103 104 /* UUID types for backward compatibility, don't use in new code */ 105 typedef struct { 106 __u8 b[16]; 107 } guid_t; 108 109 typedef struct { 110 __u8 b[16]; 111 } uuid_t; 112 113 #define UUID_STRING_LEN 36 114 115 /* MEI UUID type, don't use anywhere else */ 116 typedef struct { 117 __u8 b[16]; 118 } uuid_le; 119 120 /* Big exception to the "don't include kernel headers into userspace, which 121 * even potentially has different endianness and word sizes, since 122 * we handle those differences explicitly below */ 123 #include "../../include/linux/mod_devicetable.h" 124 125 /* This array collects all instances that use the generic do_table */ 126 struct devtable { 127 const char *device_id; /* name of table, __mod_<name>__*_device_table. */ 128 unsigned long id_size; 129 void (*do_entry)(struct module *mod, void *symval); 130 }; 131 132 /* Define a variable f that holds the value of field f of struct devid 133 * based at address m. 134 */ 135 #define DEF_FIELD(m, devid, f) \ 136 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) 137 138 /* Define a variable f that holds the address of field f of struct devid 139 * based at address m. Due to the way typeof works, for a field of type 140 * T[N] the variable has type T(*)[N], _not_ T*. 141 */ 142 #define DEF_FIELD_ADDR(m, devid, f) \ 143 typeof(((struct devid *)0)->f) *f = ((m) + OFF_##devid##_##f) 144 145 #define ADD(str, sep, cond, field) \ 146 do { \ 147 strcat(str, sep); \ 148 if (cond) \ 149 sprintf(str + strlen(str), \ 150 sizeof(field) == 1 ? "%02X" : \ 151 sizeof(field) == 2 ? "%04X" : \ 152 sizeof(field) == 4 ? "%08X" : "", \ 153 field); \ 154 else \ 155 sprintf(str + strlen(str), "*"); \ 156 } while(0) 157 158 static inline void add_uuid(char *str, uuid_le uuid) 159 { 160 int len = strlen(str); 161 162 sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", 163 uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0], 164 uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6], 165 uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11], 166 uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]); 167 } 168 169 static inline void add_guid(char *str, guid_t guid) 170 { 171 int len = strlen(str); 172 173 sprintf(str + len, "%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X", 174 guid.b[3], guid.b[2], guid.b[1], guid.b[0], 175 guid.b[5], guid.b[4], guid.b[7], guid.b[6], 176 guid.b[8], guid.b[9], guid.b[10], guid.b[11], 177 guid.b[12], guid.b[13], guid.b[14], guid.b[15]); 178 } 179 180 /** 181 * Check that sizeof(device_id type) are consistent with size of section 182 * in .o file. If in-consistent then userspace and kernel does not agree 183 * on actual size which is a bug. 184 * Also verify that the final entry in the table is all zeros. 185 * Ignore both checks if build host differ from target host and size differs. 186 **/ 187 static void device_id_check(const char *modname, const char *device_id, 188 unsigned long size, unsigned long id_size, 189 void *symval) 190 { 191 int i; 192 193 if (size % id_size || size < id_size) { 194 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo of the size of section __mod_%s__<identifier>_device_table=%lu.\n" 195 "Fix definition of struct %s_device_id in mod_devicetable.h\n", 196 modname, device_id, id_size, device_id, size, device_id); 197 } 198 /* Verify last one is a terminator */ 199 for (i = 0; i < id_size; i++ ) { 200 if (*(uint8_t*)(symval+size-id_size+i)) { 201 fprintf(stderr, 202 "%s: struct %s_device_id is %lu bytes. The last of %lu is:\n", 203 modname, device_id, id_size, size / id_size); 204 for (i = 0; i < id_size; i++ ) 205 fprintf(stderr,"0x%02x ", 206 *(uint8_t*)(symval+size-id_size+i) ); 207 fprintf(stderr,"\n"); 208 fatal("%s: struct %s_device_id is not terminated with a NULL entry!\n", 209 modname, device_id); 210 } 211 } 212 } 213 214 /* USB is special because the bcdDevice can be matched against a numeric range */ 215 /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */ 216 static void do_usb_entry(void *symval, 217 unsigned int bcdDevice_initial, int bcdDevice_initial_digits, 218 unsigned char range_lo, unsigned char range_hi, 219 unsigned char max, struct module *mod) 220 { 221 char alias[500]; 222 DEF_FIELD(symval, usb_device_id, match_flags); 223 DEF_FIELD(symval, usb_device_id, idVendor); 224 DEF_FIELD(symval, usb_device_id, idProduct); 225 DEF_FIELD(symval, usb_device_id, bcdDevice_lo); 226 DEF_FIELD(symval, usb_device_id, bDeviceClass); 227 DEF_FIELD(symval, usb_device_id, bDeviceSubClass); 228 DEF_FIELD(symval, usb_device_id, bDeviceProtocol); 229 DEF_FIELD(symval, usb_device_id, bInterfaceClass); 230 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass); 231 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol); 232 DEF_FIELD(symval, usb_device_id, bInterfaceNumber); 233 234 strcpy(alias, "usb:"); 235 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR, 236 idVendor); 237 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT, 238 idProduct); 239 240 strcat(alias, "d"); 241 if (bcdDevice_initial_digits) 242 sprintf(alias + strlen(alias), "%0*X", 243 bcdDevice_initial_digits, bcdDevice_initial); 244 if (range_lo == range_hi) 245 sprintf(alias + strlen(alias), "%X", range_lo); 246 else if (range_lo > 0 || range_hi < max) { 247 if (range_lo > 0x9 || range_hi < 0xA) 248 sprintf(alias + strlen(alias), 249 "[%X-%X]", 250 range_lo, 251 range_hi); 252 else { 253 sprintf(alias + strlen(alias), 254 range_lo < 0x9 ? "[%X-9" : "[%X", 255 range_lo); 256 sprintf(alias + strlen(alias), 257 range_hi > 0xA ? "A-%X]" : "%X]", 258 range_hi); 259 } 260 } 261 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1)) 262 strcat(alias, "*"); 263 264 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS, 265 bDeviceClass); 266 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS, 267 bDeviceSubClass); 268 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL, 269 bDeviceProtocol); 270 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS, 271 bInterfaceClass); 272 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS, 273 bInterfaceSubClass); 274 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL, 275 bInterfaceProtocol); 276 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER, 277 bInterfaceNumber); 278 279 module_alias_printf(mod, true, "%s", alias); 280 } 281 282 /* Handles increment/decrement of BCD formatted integers */ 283 /* Returns the previous value, so it works like i++ or i-- */ 284 static unsigned int incbcd(unsigned int *bcd, 285 int inc, 286 unsigned char max, 287 size_t chars) 288 { 289 unsigned int init = *bcd, i, j; 290 unsigned long long c, dec = 0; 291 292 /* If bcd is not in BCD format, just increment */ 293 if (max > 0x9) { 294 *bcd += inc; 295 return init; 296 } 297 298 /* Convert BCD to Decimal */ 299 for (i=0 ; i < chars ; i++) { 300 c = (*bcd >> (i << 2)) & 0xf; 301 c = c > 9 ? 9 : c; /* force to bcd just in case */ 302 for (j=0 ; j < i ; j++) 303 c = c * 10; 304 dec += c; 305 } 306 307 /* Do our increment/decrement */ 308 dec += inc; 309 *bcd = 0; 310 311 /* Convert back to BCD */ 312 for (i=0 ; i < chars ; i++) { 313 for (c=1,j=0 ; j < i ; j++) 314 c = c * 10; 315 c = (dec / c) % 10; 316 *bcd += c << (i << 2); 317 } 318 return init; 319 } 320 321 static void do_usb_entry_multi(void *symval, struct module *mod) 322 { 323 unsigned int devlo, devhi; 324 unsigned char chi, clo, max; 325 int ndigits; 326 327 DEF_FIELD(symval, usb_device_id, match_flags); 328 DEF_FIELD(symval, usb_device_id, idVendor); 329 DEF_FIELD(symval, usb_device_id, idProduct); 330 DEF_FIELD(symval, usb_device_id, bcdDevice_lo); 331 DEF_FIELD(symval, usb_device_id, bcdDevice_hi); 332 DEF_FIELD(symval, usb_device_id, bDeviceClass); 333 DEF_FIELD(symval, usb_device_id, bInterfaceClass); 334 335 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ? 336 bcdDevice_lo : 0x0U; 337 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ? 338 bcdDevice_hi : ~0x0U; 339 340 /* Figure out if this entry is in bcd or hex format */ 341 max = 0x9; /* Default to decimal format */ 342 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) { 343 clo = (devlo >> (ndigits << 2)) & 0xf; 344 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf; 345 if (clo > max || chi > max) { 346 max = 0xf; 347 break; 348 } 349 } 350 351 /* 352 * Some modules (visor) have empty slots as placeholder for 353 * run-time specification that results in catch-all alias 354 */ 355 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass)) 356 return; 357 358 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */ 359 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) { 360 clo = devlo & 0xf; 361 chi = devhi & 0xf; 362 if (chi > max) /* If we are in bcd mode, truncate if necessary */ 363 chi = max; 364 devlo >>= 4; 365 devhi >>= 4; 366 367 if (devlo == devhi || !ndigits) { 368 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod); 369 break; 370 } 371 372 if (clo > 0x0) 373 do_usb_entry(symval, 374 incbcd(&devlo, 1, max, 375 sizeof(bcdDevice_lo) * 2), 376 ndigits, clo, max, max, mod); 377 378 if (chi < max) 379 do_usb_entry(symval, 380 incbcd(&devhi, -1, max, 381 sizeof(bcdDevice_lo) * 2), 382 ndigits, 0x0, chi, max, mod); 383 } 384 } 385 386 static void do_usb_table(void *symval, unsigned long size, 387 struct module *mod) 388 { 389 unsigned int i; 390 const unsigned long id_size = SIZE_usb_device_id; 391 392 device_id_check(mod->name, "usb", size, id_size, symval); 393 394 /* Leave last one: it's the terminator. */ 395 size -= id_size; 396 397 for (i = 0; i < size; i += id_size) 398 do_usb_entry_multi(symval + i, mod); 399 } 400 401 static void do_of_entry_multi(void *symval, struct module *mod) 402 { 403 char alias[500]; 404 int len; 405 char *tmp; 406 407 DEF_FIELD_ADDR(symval, of_device_id, name); 408 DEF_FIELD_ADDR(symval, of_device_id, type); 409 DEF_FIELD_ADDR(symval, of_device_id, compatible); 410 411 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*", 412 (*type)[0] ? *type : "*"); 413 414 if ((*compatible)[0]) 415 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "", 416 *compatible); 417 418 /* Replace all whitespace with underscores */ 419 for (tmp = alias; tmp && *tmp; tmp++) 420 if (isspace(*tmp)) 421 *tmp = '_'; 422 423 module_alias_printf(mod, false, "%s", alias); 424 module_alias_printf(mod, false, "%sC*", alias); 425 } 426 427 static void do_of_table(void *symval, unsigned long size, 428 struct module *mod) 429 { 430 unsigned int i; 431 const unsigned long id_size = SIZE_of_device_id; 432 433 device_id_check(mod->name, "of", size, id_size, symval); 434 435 /* Leave last one: it's the terminator. */ 436 size -= id_size; 437 438 for (i = 0; i < size; i += id_size) 439 do_of_entry_multi(symval + i, mod); 440 } 441 442 /* Looks like: hid:bNvNpN */ 443 static void do_hid_entry(struct module *mod, void *symval) 444 { 445 char alias[256] = {}; 446 447 DEF_FIELD(symval, hid_device_id, bus); 448 DEF_FIELD(symval, hid_device_id, group); 449 DEF_FIELD(symval, hid_device_id, vendor); 450 DEF_FIELD(symval, hid_device_id, product); 451 452 ADD(alias, "b", bus != HID_BUS_ANY, bus); 453 ADD(alias, "g", group != HID_GROUP_ANY, group); 454 ADD(alias, "v", vendor != HID_ANY_ID, vendor); 455 ADD(alias, "p", product != HID_ANY_ID, product); 456 457 module_alias_printf(mod, false, "hid:%s", alias); 458 } 459 460 /* Looks like: ieee1394:venNmoNspNverN */ 461 static void do_ieee1394_entry(struct module *mod, void *symval) 462 { 463 char alias[256] = {}; 464 465 DEF_FIELD(symval, ieee1394_device_id, match_flags); 466 DEF_FIELD(symval, ieee1394_device_id, vendor_id); 467 DEF_FIELD(symval, ieee1394_device_id, model_id); 468 DEF_FIELD(symval, ieee1394_device_id, specifier_id); 469 DEF_FIELD(symval, ieee1394_device_id, version); 470 471 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID, 472 vendor_id); 473 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID, 474 model_id); 475 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID, 476 specifier_id); 477 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION, 478 version); 479 480 module_alias_printf(mod, true, "ieee1394:%s", alias); 481 } 482 483 /* Looks like: pci:vNdNsvNsdNbcNscNiN or <prefix>_pci:vNdNsvNsdNbcNscNiN. */ 484 static void do_pci_entry(struct module *mod, void *symval) 485 { 486 char alias[256]; 487 /* Class field can be divided into these three. */ 488 unsigned char baseclass, subclass, interface, 489 baseclass_mask, subclass_mask, interface_mask; 490 491 DEF_FIELD(symval, pci_device_id, vendor); 492 DEF_FIELD(symval, pci_device_id, device); 493 DEF_FIELD(symval, pci_device_id, subvendor); 494 DEF_FIELD(symval, pci_device_id, subdevice); 495 DEF_FIELD(symval, pci_device_id, class); 496 DEF_FIELD(symval, pci_device_id, class_mask); 497 DEF_FIELD(symval, pci_device_id, override_only); 498 499 switch (override_only) { 500 case 0: 501 strcpy(alias, "pci:"); 502 break; 503 case PCI_ID_F_VFIO_DRIVER_OVERRIDE: 504 strcpy(alias, "vfio_pci:"); 505 break; 506 default: 507 warn("Unknown PCI driver_override alias %08X\n", 508 override_only); 509 } 510 511 ADD(alias, "v", vendor != PCI_ANY_ID, vendor); 512 ADD(alias, "d", device != PCI_ANY_ID, device); 513 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor); 514 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice); 515 516 baseclass = (class) >> 16; 517 baseclass_mask = (class_mask) >> 16; 518 subclass = (class) >> 8; 519 subclass_mask = (class_mask) >> 8; 520 interface = class; 521 interface_mask = class_mask; 522 523 if ((baseclass_mask != 0 && baseclass_mask != 0xFF) 524 || (subclass_mask != 0 && subclass_mask != 0xFF) 525 || (interface_mask != 0 && interface_mask != 0xFF)) { 526 warn("Can't handle masks in %s:%04X\n", 527 mod->name, class_mask); 528 return; 529 } 530 531 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass); 532 ADD(alias, "sc", subclass_mask == 0xFF, subclass); 533 ADD(alias, "i", interface_mask == 0xFF, interface); 534 535 module_alias_printf(mod, true, "%s", alias); 536 } 537 538 /* looks like: "ccw:tNmNdtNdmN" */ 539 static void do_ccw_entry(struct module *mod, void *symval) 540 { 541 char alias[256] = {}; 542 543 DEF_FIELD(symval, ccw_device_id, match_flags); 544 DEF_FIELD(symval, ccw_device_id, cu_type); 545 DEF_FIELD(symval, ccw_device_id, cu_model); 546 DEF_FIELD(symval, ccw_device_id, dev_type); 547 DEF_FIELD(symval, ccw_device_id, dev_model); 548 549 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE, 550 cu_type); 551 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL, 552 cu_model); 553 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE, 554 dev_type); 555 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL, 556 dev_model); 557 558 module_alias_printf(mod, true, "ccw:%s", alias); 559 } 560 561 /* looks like: "ap:tN" */ 562 static void do_ap_entry(struct module *mod, void *symval) 563 { 564 DEF_FIELD(symval, ap_device_id, dev_type); 565 566 module_alias_printf(mod, false, "ap:t%02X*", dev_type); 567 } 568 569 /* looks like: "css:tN" */ 570 static void do_css_entry(struct module *mod, void *symval) 571 { 572 DEF_FIELD(symval, css_device_id, type); 573 574 module_alias_printf(mod, false, "css:t%01X", type); 575 } 576 577 /* Looks like: "serio:tyNprNidNexN" */ 578 static void do_serio_entry(struct module *mod, void *symval) 579 { 580 char alias[256] = {}; 581 582 DEF_FIELD(symval, serio_device_id, type); 583 DEF_FIELD(symval, serio_device_id, proto); 584 DEF_FIELD(symval, serio_device_id, id); 585 DEF_FIELD(symval, serio_device_id, extra); 586 587 ADD(alias, "ty", type != SERIO_ANY, type); 588 ADD(alias, "pr", proto != SERIO_ANY, proto); 589 ADD(alias, "id", id != SERIO_ANY, id); 590 ADD(alias, "ex", extra != SERIO_ANY, extra); 591 592 module_alias_printf(mod, true, "serio:%s", alias); 593 } 594 595 /* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or 596 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if) 597 * 598 * NOTE: Each driver should use one of the following : _HID, _CIDs 599 * or _CLS. Also, bb, ss, and pp can be substituted with ?? 600 * as don't care byte. 601 */ 602 static void do_acpi_entry(struct module *mod, void *symval) 603 { 604 DEF_FIELD_ADDR(symval, acpi_device_id, id); 605 DEF_FIELD(symval, acpi_device_id, cls); 606 DEF_FIELD(symval, acpi_device_id, cls_msk); 607 608 if ((*id)[0]) 609 module_alias_printf(mod, false, "acpi*:%s:*", *id); 610 else { 611 char alias[256]; 612 int i, byte_shift, cnt = 0; 613 unsigned int msk; 614 615 for (i = 1; i <= 3; i++) { 616 byte_shift = 8 * (3-i); 617 msk = (cls_msk >> byte_shift) & 0xFF; 618 if (msk) 619 sprintf(&alias[cnt], "%02x", 620 (cls >> byte_shift) & 0xFF); 621 else 622 sprintf(&alias[cnt], "??"); 623 cnt += 2; 624 } 625 module_alias_printf(mod, false, "acpi*:%s:*", alias); 626 } 627 } 628 629 /* looks like: "pnp:dD" */ 630 static void do_pnp_device_entry(struct module *mod, void *symval) 631 { 632 DEF_FIELD_ADDR(symval, pnp_device_id, id); 633 char acpi_id[sizeof(*id)]; 634 635 /* fix broken pnp bus lowercasing */ 636 for (unsigned int i = 0; i < sizeof(acpi_id); i++) 637 acpi_id[i] = toupper((*id)[i]); 638 module_alias_printf(mod, false, "pnp:d%s*", *id); 639 module_alias_printf(mod, false, "acpi*:%s:*", acpi_id); 640 } 641 642 /* looks like: "pnp:dD" for every device of the card */ 643 static void do_pnp_card_entry(struct module *mod, void *symval) 644 { 645 DEF_FIELD_ADDR(symval, pnp_card_device_id, devs); 646 647 for (unsigned int i = 0; i < PNP_MAX_DEVICES; i++) { 648 const char *id = (char *)(*devs)[i].id; 649 char acpi_id[PNP_ID_LEN]; 650 651 if (!id[0]) 652 break; 653 654 /* fix broken pnp bus lowercasing */ 655 for (unsigned int j = 0; j < sizeof(acpi_id); j++) 656 acpi_id[j] = toupper(id[j]); 657 658 /* add an individual alias for every device entry */ 659 module_alias_printf(mod, false, "pnp:d%s*", id); 660 module_alias_printf(mod, false, "acpi*:%s:*", acpi_id); 661 } 662 } 663 664 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */ 665 static void do_pcmcia_entry(struct module *mod, void *symval) 666 { 667 char alias[256] = {}; 668 unsigned int i; 669 DEF_FIELD(symval, pcmcia_device_id, match_flags); 670 DEF_FIELD(symval, pcmcia_device_id, manf_id); 671 DEF_FIELD(symval, pcmcia_device_id, card_id); 672 DEF_FIELD(symval, pcmcia_device_id, func_id); 673 DEF_FIELD(symval, pcmcia_device_id, function); 674 DEF_FIELD(symval, pcmcia_device_id, device_no); 675 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash); 676 677 for (i=0; i<4; i++) { 678 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]); 679 } 680 681 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID, 682 manf_id); 683 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID, 684 card_id); 685 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID, 686 func_id); 687 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION, 688 function); 689 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO, 690 device_no); 691 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]); 692 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]); 693 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]); 694 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]); 695 696 module_alias_printf(mod, true, "pcmcia:%s", alias); 697 } 698 699 static void do_vio_entry(struct module *mod, void *symval) 700 { 701 char alias[256]; 702 char *tmp; 703 DEF_FIELD_ADDR(symval, vio_device_id, type); 704 DEF_FIELD_ADDR(symval, vio_device_id, compat); 705 706 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*", 707 (*compat)[0] ? *compat : "*"); 708 709 /* Replace all whitespace with underscores */ 710 for (tmp = alias; tmp && *tmp; tmp++) 711 if (isspace (*tmp)) 712 *tmp = '_'; 713 714 module_alias_printf(mod, true, "%s", alias); 715 } 716 717 static void do_input(char *alias, 718 kernel_ulong_t *arr, unsigned int min, unsigned int max) 719 { 720 unsigned int i; 721 722 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++) 723 arr[i] = TO_NATIVE(arr[i]); 724 for (i = min; i < max; i++) 725 if (arr[i / BITS_PER_LONG] & (1ULL << (i%BITS_PER_LONG))) 726 sprintf(alias + strlen(alias), "%X,*", i); 727 } 728 729 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */ 730 static void do_input_entry(struct module *mod, void *symval) 731 { 732 char alias[256] = {}; 733 734 DEF_FIELD(symval, input_device_id, flags); 735 DEF_FIELD(symval, input_device_id, bustype); 736 DEF_FIELD(symval, input_device_id, vendor); 737 DEF_FIELD(symval, input_device_id, product); 738 DEF_FIELD(symval, input_device_id, version); 739 DEF_FIELD_ADDR(symval, input_device_id, evbit); 740 DEF_FIELD_ADDR(symval, input_device_id, keybit); 741 DEF_FIELD_ADDR(symval, input_device_id, relbit); 742 DEF_FIELD_ADDR(symval, input_device_id, absbit); 743 DEF_FIELD_ADDR(symval, input_device_id, mscbit); 744 DEF_FIELD_ADDR(symval, input_device_id, ledbit); 745 DEF_FIELD_ADDR(symval, input_device_id, sndbit); 746 DEF_FIELD_ADDR(symval, input_device_id, ffbit); 747 DEF_FIELD_ADDR(symval, input_device_id, swbit); 748 749 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype); 750 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor); 751 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product); 752 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version); 753 754 sprintf(alias + strlen(alias), "-e*"); 755 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT) 756 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX); 757 sprintf(alias + strlen(alias), "k*"); 758 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT) 759 do_input(alias, *keybit, 760 INPUT_DEVICE_ID_KEY_MIN_INTERESTING, 761 INPUT_DEVICE_ID_KEY_MAX); 762 sprintf(alias + strlen(alias), "r*"); 763 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT) 764 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX); 765 sprintf(alias + strlen(alias), "a*"); 766 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT) 767 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX); 768 sprintf(alias + strlen(alias), "m*"); 769 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT) 770 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX); 771 sprintf(alias + strlen(alias), "l*"); 772 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT) 773 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX); 774 sprintf(alias + strlen(alias), "s*"); 775 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT) 776 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX); 777 sprintf(alias + strlen(alias), "f*"); 778 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT) 779 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX); 780 sprintf(alias + strlen(alias), "w*"); 781 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT) 782 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX); 783 784 module_alias_printf(mod, false, "input:%s", alias); 785 } 786 787 static void do_eisa_entry(struct module *mod, void *symval) 788 { 789 DEF_FIELD_ADDR(symval, eisa_device_id, sig); 790 module_alias_printf(mod, false, EISA_DEVICE_MODALIAS_FMT "*", *sig); 791 } 792 793 /* Looks like: parisc:tNhvNrevNsvN */ 794 static void do_parisc_entry(struct module *mod, void *symval) 795 { 796 char alias[256] = {}; 797 798 DEF_FIELD(symval, parisc_device_id, hw_type); 799 DEF_FIELD(symval, parisc_device_id, hversion); 800 DEF_FIELD(symval, parisc_device_id, hversion_rev); 801 DEF_FIELD(symval, parisc_device_id, sversion); 802 803 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type); 804 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion); 805 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev); 806 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion); 807 808 module_alias_printf(mod, true, "parisc:%s", alias); 809 } 810 811 /* Looks like: sdio:cNvNdN. */ 812 static void do_sdio_entry(struct module *mod, void *symval) 813 { 814 char alias[256] = {}; 815 816 DEF_FIELD(symval, sdio_device_id, class); 817 DEF_FIELD(symval, sdio_device_id, vendor); 818 DEF_FIELD(symval, sdio_device_id, device); 819 820 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class); 821 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor); 822 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device); 823 824 module_alias_printf(mod, true, "sdio:%s", alias); 825 } 826 827 /* Looks like: ssb:vNidNrevN. */ 828 static void do_ssb_entry(struct module *mod, void *symval) 829 { 830 char alias[256] = {}; 831 832 DEF_FIELD(symval, ssb_device_id, vendor); 833 DEF_FIELD(symval, ssb_device_id, coreid); 834 DEF_FIELD(symval, ssb_device_id, revision); 835 836 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor); 837 ADD(alias, "id", coreid != SSB_ANY_ID, coreid); 838 ADD(alias, "rev", revision != SSB_ANY_REV, revision); 839 840 module_alias_printf(mod, true, "ssb:%s", alias); 841 } 842 843 /* Looks like: bcma:mNidNrevNclN. */ 844 static void do_bcma_entry(struct module *mod, void *symval) 845 { 846 char alias[256] = {}; 847 848 DEF_FIELD(symval, bcma_device_id, manuf); 849 DEF_FIELD(symval, bcma_device_id, id); 850 DEF_FIELD(symval, bcma_device_id, rev); 851 DEF_FIELD(symval, bcma_device_id, class); 852 853 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf); 854 ADD(alias, "id", id != BCMA_ANY_ID, id); 855 ADD(alias, "rev", rev != BCMA_ANY_REV, rev); 856 ADD(alias, "cl", class != BCMA_ANY_CLASS, class); 857 858 module_alias_printf(mod, true, "bcma:%s", alias); 859 } 860 861 /* Looks like: virtio:dNvN */ 862 static void do_virtio_entry(struct module *mod, void *symval) 863 { 864 char alias[256] = {}; 865 866 DEF_FIELD(symval, virtio_device_id, device); 867 DEF_FIELD(symval, virtio_device_id, vendor); 868 869 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device); 870 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor); 871 872 module_alias_printf(mod, true, "virtio:%s", alias); 873 } 874 875 /* 876 * Looks like: vmbus:guid 877 * Each byte of the guid will be represented by two hex characters 878 * in the name. 879 */ 880 881 static void do_vmbus_entry(struct module *mod, void *symval) 882 { 883 int i; 884 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid); 885 char guid_name[(sizeof(*guid) + 1) * 2]; 886 887 for (i = 0; i < (sizeof(*guid) * 2); i += 2) 888 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2])); 889 890 module_alias_printf(mod, false, "vmbus:%s", guid_name); 891 } 892 893 /* Looks like: rpmsg:S */ 894 static void do_rpmsg_entry(struct module *mod, void *symval) 895 { 896 DEF_FIELD_ADDR(symval, rpmsg_device_id, name); 897 898 module_alias_printf(mod, false, RPMSG_DEVICE_MODALIAS_FMT, *name); 899 } 900 901 /* Looks like: i2c:S */ 902 static void do_i2c_entry(struct module *mod, void *symval) 903 { 904 DEF_FIELD_ADDR(symval, i2c_device_id, name); 905 906 module_alias_printf(mod, false, I2C_MODULE_PREFIX "%s", *name); 907 } 908 909 static void do_i3c_entry(struct module *mod, void *symval) 910 { 911 char alias[256] = {}; 912 913 DEF_FIELD(symval, i3c_device_id, match_flags); 914 DEF_FIELD(symval, i3c_device_id, dcr); 915 DEF_FIELD(symval, i3c_device_id, manuf_id); 916 DEF_FIELD(symval, i3c_device_id, part_id); 917 DEF_FIELD(symval, i3c_device_id, extra_info); 918 919 ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr); 920 ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id); 921 ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id); 922 ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info); 923 924 module_alias_printf(mod, false, "i3c:%s", alias); 925 } 926 927 static void do_slim_entry(struct module *mod, void *symval) 928 { 929 DEF_FIELD(symval, slim_device_id, manf_id); 930 DEF_FIELD(symval, slim_device_id, prod_code); 931 932 module_alias_printf(mod, false, "slim:%x:%x:*", manf_id, prod_code); 933 } 934 935 /* Looks like: spi:S */ 936 static void do_spi_entry(struct module *mod, void *symval) 937 { 938 DEF_FIELD_ADDR(symval, spi_device_id, name); 939 940 module_alias_printf(mod, false, SPI_MODULE_PREFIX "%s", *name); 941 } 942 943 static const struct dmifield { 944 const char *prefix; 945 int field; 946 } dmi_fields[] = { 947 { "bvn", DMI_BIOS_VENDOR }, 948 { "bvr", DMI_BIOS_VERSION }, 949 { "bd", DMI_BIOS_DATE }, 950 { "br", DMI_BIOS_RELEASE }, 951 { "efr", DMI_EC_FIRMWARE_RELEASE }, 952 { "svn", DMI_SYS_VENDOR }, 953 { "pn", DMI_PRODUCT_NAME }, 954 { "pvr", DMI_PRODUCT_VERSION }, 955 { "rvn", DMI_BOARD_VENDOR }, 956 { "rn", DMI_BOARD_NAME }, 957 { "rvr", DMI_BOARD_VERSION }, 958 { "cvn", DMI_CHASSIS_VENDOR }, 959 { "ct", DMI_CHASSIS_TYPE }, 960 { "cvr", DMI_CHASSIS_VERSION }, 961 { NULL, DMI_NONE } 962 }; 963 964 static void dmi_ascii_filter(char *d, const char *s) 965 { 966 /* Filter out characters we don't want to see in the modalias string */ 967 for (; *s; s++) 968 if (*s > ' ' && *s < 127 && *s != ':') 969 *(d++) = *s; 970 971 *d = 0; 972 } 973 974 975 static void do_dmi_entry(struct module *mod, void *symval) 976 { 977 char alias[256] = {}; 978 int i, j; 979 DEF_FIELD_ADDR(symval, dmi_system_id, matches); 980 981 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) { 982 for (j = 0; j < 4; j++) { 983 if ((*matches)[j].slot && 984 (*matches)[j].slot == dmi_fields[i].field) { 985 sprintf(alias + strlen(alias), ":%s*", 986 dmi_fields[i].prefix); 987 dmi_ascii_filter(alias + strlen(alias), 988 (*matches)[j].substr); 989 strcat(alias, "*"); 990 } 991 } 992 } 993 994 module_alias_printf(mod, false, "dmi*%s:", alias); 995 } 996 997 static void do_platform_entry(struct module *mod, void *symval) 998 { 999 DEF_FIELD_ADDR(symval, platform_device_id, name); 1000 1001 module_alias_printf(mod, false, PLATFORM_MODULE_PREFIX "%s", *name); 1002 } 1003 1004 static void do_mdio_entry(struct module *mod, void *symval) 1005 { 1006 char id[33]; 1007 int i; 1008 DEF_FIELD(symval, mdio_device_id, phy_id); 1009 DEF_FIELD(symval, mdio_device_id, phy_id_mask); 1010 1011 for (i = 0; i < 32; i++) { 1012 if (!((phy_id_mask >> (31-i)) & 1)) 1013 id[i] = '?'; 1014 else if ((phy_id >> (31-i)) & 1) 1015 id[i] = '1'; 1016 else 1017 id[i] = '0'; 1018 } 1019 1020 /* Terminate the string */ 1021 id[32] = '\0'; 1022 1023 module_alias_printf(mod, false, MDIO_MODULE_PREFIX "%s", id); 1024 } 1025 1026 /* Looks like: zorro:iN. */ 1027 static void do_zorro_entry(struct module *mod, void *symval) 1028 { 1029 char alias[256] = {}; 1030 DEF_FIELD(symval, zorro_device_id, id); 1031 1032 ADD(alias, "i", id != ZORRO_WILDCARD, id); 1033 1034 module_alias_printf(mod, false, "zorro:%s", alias); 1035 } 1036 1037 /* looks like: "pnp:dD" */ 1038 static void do_isapnp_entry(struct module *mod, void *symval) 1039 { 1040 DEF_FIELD(symval, isapnp_device_id, vendor); 1041 DEF_FIELD(symval, isapnp_device_id, function); 1042 module_alias_printf(mod, false, "pnp:d%c%c%c%x%x%x%x*", 1043 'A' + ((vendor >> 2) & 0x3f) - 1, 1044 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1, 1045 'A' + ((vendor >> 8) & 0x1f) - 1, 1046 (function >> 4) & 0x0f, function & 0x0f, 1047 (function >> 12) & 0x0f, (function >> 8) & 0x0f); 1048 } 1049 1050 /* Looks like: "ipack:fNvNdN". */ 1051 static void do_ipack_entry(struct module *mod, void *symval) 1052 { 1053 char alias[256] = {}; 1054 DEF_FIELD(symval, ipack_device_id, format); 1055 DEF_FIELD(symval, ipack_device_id, vendor); 1056 DEF_FIELD(symval, ipack_device_id, device); 1057 1058 ADD(alias, "f", format != IPACK_ANY_FORMAT, format); 1059 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor); 1060 ADD(alias, "d", device != IPACK_ANY_ID, device); 1061 1062 module_alias_printf(mod, true, "ipack:%s", alias); 1063 } 1064 1065 /* 1066 * Append a match expression for a single masked hex digit. 1067 * outp points to a pointer to the character at which to append. 1068 * *outp is updated on return to point just after the appended text, 1069 * to facilitate further appending. 1070 */ 1071 static void append_nibble_mask(char **outp, 1072 unsigned int nibble, unsigned int mask) 1073 { 1074 char *p = *outp; 1075 unsigned int i; 1076 1077 switch (mask) { 1078 case 0: 1079 *p++ = '?'; 1080 break; 1081 1082 case 0xf: 1083 p += sprintf(p, "%X", nibble); 1084 break; 1085 1086 default: 1087 /* 1088 * Dumbly emit a match pattern for all possible matching 1089 * digits. This could be improved in some cases using ranges, 1090 * but it has the advantage of being trivially correct, and is 1091 * often optimal. 1092 */ 1093 *p++ = '['; 1094 for (i = 0; i < 0x10; i++) 1095 if ((i & mask) == nibble) 1096 p += sprintf(p, "%X", i); 1097 *p++ = ']'; 1098 } 1099 1100 /* Ensure that the string remains NUL-terminated: */ 1101 *p = '\0'; 1102 1103 /* Advance the caller's end-of-string pointer: */ 1104 *outp = p; 1105 } 1106 1107 /* 1108 * looks like: "amba:dN" 1109 * 1110 * N is exactly 8 digits, where each is an upper-case hex digit, or 1111 * a ? or [] pattern matching exactly one digit. 1112 */ 1113 static void do_amba_entry(struct module *mod, void *symval) 1114 { 1115 char alias[256]; 1116 unsigned int digit; 1117 char *p = alias; 1118 DEF_FIELD(symval, amba_id, id); 1119 DEF_FIELD(symval, amba_id, mask); 1120 1121 if ((id & mask) != id) 1122 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: id=0x%08X, mask=0x%08X. Please fix this driver.\n", 1123 mod->name, id, mask); 1124 1125 for (digit = 0; digit < 8; digit++) 1126 append_nibble_mask(&p, 1127 (id >> (4 * (7 - digit))) & 0xf, 1128 (mask >> (4 * (7 - digit))) & 0xf); 1129 1130 module_alias_printf(mod, false, "amba:d%s", alias); 1131 } 1132 1133 /* 1134 * looks like: "mipscdmm:tN" 1135 * 1136 * N is exactly 2 digits, where each is an upper-case hex digit, or 1137 * a ? or [] pattern matching exactly one digit. 1138 */ 1139 static void do_mips_cdmm_entry(struct module *mod, void *symval) 1140 { 1141 DEF_FIELD(symval, mips_cdmm_device_id, type); 1142 1143 module_alias_printf(mod, false, "mipscdmm:t%02X*", type); 1144 } 1145 1146 /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,* 1147 * All fields are numbers. It would be nicer to use strings for vendor 1148 * and feature, but getting those out of the build system here is too 1149 * complicated. 1150 */ 1151 1152 static void do_x86cpu_entry(struct module *mod, void *symval) 1153 { 1154 char alias[256] = {}; 1155 1156 DEF_FIELD(symval, x86_cpu_id, feature); 1157 DEF_FIELD(symval, x86_cpu_id, family); 1158 DEF_FIELD(symval, x86_cpu_id, model); 1159 DEF_FIELD(symval, x86_cpu_id, vendor); 1160 1161 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor); 1162 ADD(alias, "fam", family != X86_FAMILY_ANY, family); 1163 ADD(alias, "mod", model != X86_MODEL_ANY, model); 1164 strcat(alias, ":feature:*"); 1165 if (feature != X86_FEATURE_ANY) 1166 sprintf(alias + strlen(alias), "%04X*", feature); 1167 1168 module_alias_printf(mod, false, "cpu:type:x86,%s", alias); 1169 } 1170 1171 /* LOOKS like cpu:type:*:feature:*FEAT* */ 1172 static void do_cpu_entry(struct module *mod, void *symval) 1173 { 1174 DEF_FIELD(symval, cpu_feature, feature); 1175 1176 module_alias_printf(mod, false, "cpu:type:*:feature:*%04X*", feature); 1177 } 1178 1179 /* Looks like: mei:S:uuid:N:* */ 1180 static void do_mei_entry(struct module *mod, void *symval) 1181 { 1182 char alias[256] = {}; 1183 1184 DEF_FIELD_ADDR(symval, mei_cl_device_id, name); 1185 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid); 1186 DEF_FIELD(symval, mei_cl_device_id, version); 1187 1188 add_uuid(alias, *uuid); 1189 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version); 1190 1191 module_alias_printf(mod, false, MEI_CL_MODULE_PREFIX "%s:%s:*", 1192 (*name)[0] ? *name : "*", alias); 1193 } 1194 1195 /* Looks like: rapidio:vNdNavNadN */ 1196 static void do_rio_entry(struct module *mod, void *symval) 1197 { 1198 char alias[256] = {}; 1199 1200 DEF_FIELD(symval, rio_device_id, did); 1201 DEF_FIELD(symval, rio_device_id, vid); 1202 DEF_FIELD(symval, rio_device_id, asm_did); 1203 DEF_FIELD(symval, rio_device_id, asm_vid); 1204 1205 ADD(alias, "v", vid != RIO_ANY_ID, vid); 1206 ADD(alias, "d", did != RIO_ANY_ID, did); 1207 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid); 1208 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did); 1209 1210 module_alias_printf(mod, true, "rapidio:%s", alias); 1211 } 1212 1213 /* Looks like: ulpi:vNpN */ 1214 static void do_ulpi_entry(struct module *mod, void *symval) 1215 { 1216 DEF_FIELD(symval, ulpi_device_id, vendor); 1217 DEF_FIELD(symval, ulpi_device_id, product); 1218 1219 module_alias_printf(mod, false, "ulpi:v%04xp%04x", vendor, product); 1220 } 1221 1222 /* Looks like: hdaudio:vNrNaN */ 1223 static void do_hda_entry(struct module *mod, void *symval) 1224 { 1225 char alias[256] = {}; 1226 1227 DEF_FIELD(symval, hda_device_id, vendor_id); 1228 DEF_FIELD(symval, hda_device_id, rev_id); 1229 DEF_FIELD(symval, hda_device_id, api_version); 1230 1231 ADD(alias, "v", vendor_id != 0, vendor_id); 1232 ADD(alias, "r", rev_id != 0, rev_id); 1233 ADD(alias, "a", api_version != 0, api_version); 1234 1235 module_alias_printf(mod, true, "hdaudio:%s", alias); 1236 } 1237 1238 /* Looks like: sdw:mNpNvNcN */ 1239 static void do_sdw_entry(struct module *mod, void *symval) 1240 { 1241 char alias[256] = {}; 1242 1243 DEF_FIELD(symval, sdw_device_id, mfg_id); 1244 DEF_FIELD(symval, sdw_device_id, part_id); 1245 DEF_FIELD(symval, sdw_device_id, sdw_version); 1246 DEF_FIELD(symval, sdw_device_id, class_id); 1247 1248 ADD(alias, "m", mfg_id != 0, mfg_id); 1249 ADD(alias, "p", part_id != 0, part_id); 1250 ADD(alias, "v", sdw_version != 0, sdw_version); 1251 ADD(alias, "c", class_id != 0, class_id); 1252 1253 module_alias_printf(mod, true, "sdw:%s", alias); 1254 } 1255 1256 /* Looks like: fsl-mc:vNdN */ 1257 static void do_fsl_mc_entry(struct module *mod, void *symval) 1258 { 1259 DEF_FIELD(symval, fsl_mc_device_id, vendor); 1260 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type); 1261 1262 module_alias_printf(mod, false, "fsl-mc:v%08Xd%s", vendor, *obj_type); 1263 } 1264 1265 /* Looks like: tbsvc:kSpNvNrN */ 1266 static void do_tbsvc_entry(struct module *mod, void *symval) 1267 { 1268 char alias[256] = {}; 1269 1270 DEF_FIELD(symval, tb_service_id, match_flags); 1271 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key); 1272 DEF_FIELD(symval, tb_service_id, protocol_id); 1273 DEF_FIELD(symval, tb_service_id, protocol_version); 1274 DEF_FIELD(symval, tb_service_id, protocol_revision); 1275 1276 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY) 1277 sprintf(alias + strlen(alias), "k%s", *protocol_key); 1278 else 1279 strcat(alias + strlen(alias), "k*"); 1280 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id); 1281 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION, 1282 protocol_version); 1283 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION, 1284 protocol_revision); 1285 1286 module_alias_printf(mod, true, "tbsvc:%s", alias); 1287 } 1288 1289 /* Looks like: typec:idNmN */ 1290 static void do_typec_entry(struct module *mod, void *symval) 1291 { 1292 char alias[256] = {}; 1293 1294 DEF_FIELD(symval, typec_device_id, svid); 1295 DEF_FIELD(symval, typec_device_id, mode); 1296 1297 ADD(alias, "m", mode != TYPEC_ANY_MODE, mode); 1298 1299 module_alias_printf(mod, false, "typec:id%04X%s", svid, alias); 1300 } 1301 1302 /* Looks like: tee:uuid */ 1303 static void do_tee_entry(struct module *mod, void *symval) 1304 { 1305 DEF_FIELD_ADDR(symval, tee_client_device_id, uuid); 1306 1307 module_alias_printf(mod, true, 1308 "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", 1309 uuid->b[0], uuid->b[1], uuid->b[2], uuid->b[3], uuid->b[4], 1310 uuid->b[5], uuid->b[6], uuid->b[7], uuid->b[8], uuid->b[9], 1311 uuid->b[10], uuid->b[11], uuid->b[12], uuid->b[13], uuid->b[14], 1312 uuid->b[15]); 1313 } 1314 1315 /* Looks like: wmi:guid */ 1316 static void do_wmi_entry(struct module *mod, void *symval) 1317 { 1318 DEF_FIELD_ADDR(symval, wmi_device_id, guid_string); 1319 1320 if (strlen(*guid_string) != UUID_STRING_LEN) { 1321 warn("Invalid WMI device id 'wmi:%s' in '%s'\n", 1322 *guid_string, mod->name); 1323 return; 1324 } 1325 1326 module_alias_printf(mod, false, WMI_MODULE_PREFIX "%s", *guid_string); 1327 } 1328 1329 /* Looks like: mhi:S */ 1330 static void do_mhi_entry(struct module *mod, void *symval) 1331 { 1332 DEF_FIELD_ADDR(symval, mhi_device_id, chan); 1333 module_alias_printf(mod, false, MHI_DEVICE_MODALIAS_FMT, *chan); 1334 } 1335 1336 /* Looks like: mhi_ep:S */ 1337 static void do_mhi_ep_entry(struct module *mod, void *symval) 1338 { 1339 DEF_FIELD_ADDR(symval, mhi_device_id, chan); 1340 1341 module_alias_printf(mod, false, MHI_EP_DEVICE_MODALIAS_FMT, *chan); 1342 } 1343 1344 /* Looks like: ishtp:{guid} */ 1345 static void do_ishtp_entry(struct module *mod, void *symval) 1346 { 1347 char alias[256] = {}; 1348 DEF_FIELD_ADDR(symval, ishtp_device_id, guid); 1349 1350 add_guid(alias, *guid); 1351 1352 module_alias_printf(mod, false, ISHTP_MODULE_PREFIX "{%s}", alias); 1353 } 1354 1355 static void do_auxiliary_entry(struct module *mod, void *symval) 1356 { 1357 DEF_FIELD_ADDR(symval, auxiliary_device_id, name); 1358 1359 module_alias_printf(mod, false, AUXILIARY_MODULE_PREFIX "%s", *name); 1360 } 1361 1362 /* 1363 * Looks like: ssam:dNcNtNiNfN 1364 * 1365 * N is exactly 2 digits, where each is an upper-case hex digit. 1366 */ 1367 static void do_ssam_entry(struct module *mod, void *symval) 1368 { 1369 char alias[256] = {}; 1370 1371 DEF_FIELD(symval, ssam_device_id, match_flags); 1372 DEF_FIELD(symval, ssam_device_id, domain); 1373 DEF_FIELD(symval, ssam_device_id, category); 1374 DEF_FIELD(symval, ssam_device_id, target); 1375 DEF_FIELD(symval, ssam_device_id, instance); 1376 DEF_FIELD(symval, ssam_device_id, function); 1377 1378 ADD(alias, "t", match_flags & SSAM_MATCH_TARGET, target); 1379 ADD(alias, "i", match_flags & SSAM_MATCH_INSTANCE, instance); 1380 ADD(alias, "f", match_flags & SSAM_MATCH_FUNCTION, function); 1381 1382 module_alias_printf(mod, false, "ssam:d%02Xc%02X%s", 1383 domain, category, alias); 1384 } 1385 1386 /* Looks like: dfl:tNfN */ 1387 static void do_dfl_entry(struct module *mod, void *symval) 1388 { 1389 DEF_FIELD(symval, dfl_device_id, type); 1390 DEF_FIELD(symval, dfl_device_id, feature_id); 1391 1392 module_alias_printf(mod, true, "dfl:t%04Xf%04X", type, feature_id); 1393 } 1394 1395 /* Looks like: cdx:vNdN */ 1396 static void do_cdx_entry(struct module *mod, void *symval) 1397 { 1398 char alias[256]; 1399 1400 DEF_FIELD(symval, cdx_device_id, vendor); 1401 DEF_FIELD(symval, cdx_device_id, device); 1402 DEF_FIELD(symval, cdx_device_id, subvendor); 1403 DEF_FIELD(symval, cdx_device_id, subdevice); 1404 DEF_FIELD(symval, cdx_device_id, class); 1405 DEF_FIELD(symval, cdx_device_id, class_mask); 1406 DEF_FIELD(symval, cdx_device_id, override_only); 1407 1408 switch (override_only) { 1409 case 0: 1410 strcpy(alias, "cdx:"); 1411 break; 1412 case CDX_ID_F_VFIO_DRIVER_OVERRIDE: 1413 strcpy(alias, "vfio_cdx:"); 1414 break; 1415 default: 1416 warn("Unknown CDX driver_override alias %08X\n", 1417 override_only); 1418 return; 1419 } 1420 1421 ADD(alias, "v", vendor != CDX_ANY_ID, vendor); 1422 ADD(alias, "d", device != CDX_ANY_ID, device); 1423 ADD(alias, "sv", subvendor != CDX_ANY_ID, subvendor); 1424 ADD(alias, "sd", subdevice != CDX_ANY_ID, subdevice); 1425 ADD(alias, "c", class_mask == 0xFFFFFF, class); 1426 1427 module_alias_printf(mod, false, "%s", alias); 1428 } 1429 1430 static void do_vchiq_entry(struct module *mod, void *symval) 1431 { 1432 DEF_FIELD_ADDR(symval, vchiq_device_id, name); 1433 1434 module_alias_printf(mod, false, "vchiq:%s", *name); 1435 } 1436 1437 /* Looks like: coreboot:tN */ 1438 static void do_coreboot_entry(struct module *mod, void *symval) 1439 { 1440 DEF_FIELD(symval, coreboot_device_id, tag); 1441 1442 module_alias_printf(mod, false, "coreboot:t%08X", tag); 1443 } 1444 1445 /* Does namelen bytes of name exactly match the symbol? */ 1446 static bool sym_is(const char *name, unsigned namelen, const char *symbol) 1447 { 1448 if (namelen != strlen(symbol)) 1449 return false; 1450 1451 return memcmp(name, symbol, namelen) == 0; 1452 } 1453 1454 static void do_table(void *symval, unsigned long size, 1455 unsigned long id_size, 1456 const char *device_id, 1457 void (*do_entry)(struct module *mod, void *symval), 1458 struct module *mod) 1459 { 1460 unsigned int i; 1461 1462 device_id_check(mod->name, device_id, size, id_size, symval); 1463 /* Leave last one: it's the terminator. */ 1464 size -= id_size; 1465 1466 for (i = 0; i < size; i += id_size) 1467 do_entry(mod, symval + i); 1468 } 1469 1470 static const struct devtable devtable[] = { 1471 {"hid", SIZE_hid_device_id, do_hid_entry}, 1472 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry}, 1473 {"pci", SIZE_pci_device_id, do_pci_entry}, 1474 {"ccw", SIZE_ccw_device_id, do_ccw_entry}, 1475 {"ap", SIZE_ap_device_id, do_ap_entry}, 1476 {"css", SIZE_css_device_id, do_css_entry}, 1477 {"serio", SIZE_serio_device_id, do_serio_entry}, 1478 {"acpi", SIZE_acpi_device_id, do_acpi_entry}, 1479 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry}, 1480 {"vio", SIZE_vio_device_id, do_vio_entry}, 1481 {"input", SIZE_input_device_id, do_input_entry}, 1482 {"eisa", SIZE_eisa_device_id, do_eisa_entry}, 1483 {"parisc", SIZE_parisc_device_id, do_parisc_entry}, 1484 {"sdio", SIZE_sdio_device_id, do_sdio_entry}, 1485 {"ssb", SIZE_ssb_device_id, do_ssb_entry}, 1486 {"bcma", SIZE_bcma_device_id, do_bcma_entry}, 1487 {"virtio", SIZE_virtio_device_id, do_virtio_entry}, 1488 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry}, 1489 {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry}, 1490 {"i2c", SIZE_i2c_device_id, do_i2c_entry}, 1491 {"i3c", SIZE_i3c_device_id, do_i3c_entry}, 1492 {"slim", SIZE_slim_device_id, do_slim_entry}, 1493 {"spi", SIZE_spi_device_id, do_spi_entry}, 1494 {"dmi", SIZE_dmi_system_id, do_dmi_entry}, 1495 {"platform", SIZE_platform_device_id, do_platform_entry}, 1496 {"mdio", SIZE_mdio_device_id, do_mdio_entry}, 1497 {"zorro", SIZE_zorro_device_id, do_zorro_entry}, 1498 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry}, 1499 {"ipack", SIZE_ipack_device_id, do_ipack_entry}, 1500 {"amba", SIZE_amba_id, do_amba_entry}, 1501 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry}, 1502 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry}, 1503 {"cpu", SIZE_cpu_feature, do_cpu_entry}, 1504 {"mei", SIZE_mei_cl_device_id, do_mei_entry}, 1505 {"rapidio", SIZE_rio_device_id, do_rio_entry}, 1506 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry}, 1507 {"hdaudio", SIZE_hda_device_id, do_hda_entry}, 1508 {"sdw", SIZE_sdw_device_id, do_sdw_entry}, 1509 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry}, 1510 {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry}, 1511 {"typec", SIZE_typec_device_id, do_typec_entry}, 1512 {"tee", SIZE_tee_client_device_id, do_tee_entry}, 1513 {"wmi", SIZE_wmi_device_id, do_wmi_entry}, 1514 {"mhi", SIZE_mhi_device_id, do_mhi_entry}, 1515 {"mhi_ep", SIZE_mhi_device_id, do_mhi_ep_entry}, 1516 {"auxiliary", SIZE_auxiliary_device_id, do_auxiliary_entry}, 1517 {"ssam", SIZE_ssam_device_id, do_ssam_entry}, 1518 {"dfl", SIZE_dfl_device_id, do_dfl_entry}, 1519 {"ishtp", SIZE_ishtp_device_id, do_ishtp_entry}, 1520 {"cdx", SIZE_cdx_device_id, do_cdx_entry}, 1521 {"vchiq", SIZE_vchiq_device_id, do_vchiq_entry}, 1522 {"coreboot", SIZE_coreboot_device_id, do_coreboot_entry}, 1523 {"pnp", SIZE_pnp_device_id, do_pnp_device_entry}, 1524 {"pnp_card", SIZE_pnp_card_device_id, do_pnp_card_entry}, 1525 }; 1526 1527 /* Create MODULE_ALIAS() statements. 1528 * At this time, we cannot write the actual output C source yet, 1529 * so we write into the mod->dev_table_buf buffer. */ 1530 void handle_moddevtable(struct module *mod, struct elf_info *info, 1531 Elf_Sym *sym, const char *symname) 1532 { 1533 void *symval; 1534 char *zeros = NULL; 1535 const char *name, *identifier; 1536 unsigned int namelen; 1537 1538 /* We're looking for a section relative symbol */ 1539 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections) 1540 return; 1541 1542 /* We're looking for an object */ 1543 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT) 1544 return; 1545 1546 /* All our symbols are of form __mod_<name>__<identifier>_device_table. */ 1547 if (strncmp(symname, "__mod_", strlen("__mod_"))) 1548 return; 1549 name = symname + strlen("__mod_"); 1550 namelen = strlen(name); 1551 if (namelen < strlen("_device_table")) 1552 return; 1553 if (strcmp(name + namelen - strlen("_device_table"), "_device_table")) 1554 return; 1555 identifier = strstr(name, "__"); 1556 if (!identifier) 1557 return; 1558 namelen = identifier - name; 1559 1560 /* Handle all-NULL symbols allocated into .bss */ 1561 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) { 1562 zeros = calloc(1, sym->st_size); 1563 symval = zeros; 1564 } else { 1565 symval = sym_get_data(info, sym); 1566 } 1567 1568 /* First handle the "special" cases */ 1569 if (sym_is(name, namelen, "usb")) 1570 do_usb_table(symval, sym->st_size, mod); 1571 else if (sym_is(name, namelen, "of")) 1572 do_of_table(symval, sym->st_size, mod); 1573 else { 1574 int i; 1575 1576 for (i = 0; i < ARRAY_SIZE(devtable); i++) { 1577 const struct devtable *p = &devtable[i]; 1578 1579 if (sym_is(name, namelen, p->device_id)) { 1580 do_table(symval, sym->st_size, p->id_size, 1581 p->device_id, p->do_entry, mod); 1582 break; 1583 } 1584 } 1585 } 1586 free(zeros); 1587 } 1588