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(void *symval, unsigned long size, 631 struct module *mod) 632 { 633 const unsigned long id_size = SIZE_pnp_device_id; 634 const unsigned int count = (size / id_size)-1; 635 unsigned int i; 636 637 device_id_check(mod->name, "pnp", size, id_size, symval); 638 639 for (i = 0; i < count; i++) { 640 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id); 641 char acpi_id[sizeof(*id)]; 642 int j; 643 644 module_alias_printf(mod, false, "pnp:d%s*", *id); 645 646 /* fix broken pnp bus lowercasing */ 647 for (j = 0; j < sizeof(acpi_id); j++) 648 acpi_id[j] = toupper((*id)[j]); 649 module_alias_printf(mod, false, "acpi*:%s:*", acpi_id); 650 } 651 } 652 653 /* looks like: "pnp:dD" for every device of the card */ 654 static void do_pnp_card_entries(void *symval, unsigned long size, 655 struct module *mod) 656 { 657 const unsigned long id_size = SIZE_pnp_card_device_id; 658 const unsigned int count = (size / id_size)-1; 659 unsigned int i; 660 661 device_id_check(mod->name, "pnp", size, id_size, symval); 662 663 for (i = 0; i < count; i++) { 664 unsigned int j; 665 DEF_FIELD_ADDR(symval + i * id_size, pnp_card_device_id, devs); 666 667 for (j = 0; j < PNP_MAX_DEVICES; j++) { 668 const char *id = (char *)(*devs)[j].id; 669 char acpi_id[PNP_ID_LEN]; 670 671 if (!id[0]) 672 break; 673 674 /* add an individual alias for every device entry */ 675 module_alias_printf(mod, false, "pnp:d%s*", id); 676 677 /* fix broken pnp bus lowercasing */ 678 for (int k = 0; k < sizeof(acpi_id); k++) 679 acpi_id[k] = toupper(id[k]); 680 module_alias_printf(mod, false, "acpi*:%s:*", acpi_id); 681 } 682 } 683 } 684 685 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */ 686 static void do_pcmcia_entry(struct module *mod, void *symval) 687 { 688 char alias[256] = {}; 689 unsigned int i; 690 DEF_FIELD(symval, pcmcia_device_id, match_flags); 691 DEF_FIELD(symval, pcmcia_device_id, manf_id); 692 DEF_FIELD(symval, pcmcia_device_id, card_id); 693 DEF_FIELD(symval, pcmcia_device_id, func_id); 694 DEF_FIELD(symval, pcmcia_device_id, function); 695 DEF_FIELD(symval, pcmcia_device_id, device_no); 696 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash); 697 698 for (i=0; i<4; i++) { 699 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]); 700 } 701 702 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID, 703 manf_id); 704 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID, 705 card_id); 706 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID, 707 func_id); 708 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION, 709 function); 710 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO, 711 device_no); 712 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]); 713 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]); 714 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]); 715 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]); 716 717 module_alias_printf(mod, true, "pcmcia:%s", alias); 718 } 719 720 static void do_vio_entry(struct module *mod, void *symval) 721 { 722 char alias[256]; 723 char *tmp; 724 DEF_FIELD_ADDR(symval, vio_device_id, type); 725 DEF_FIELD_ADDR(symval, vio_device_id, compat); 726 727 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*", 728 (*compat)[0] ? *compat : "*"); 729 730 /* Replace all whitespace with underscores */ 731 for (tmp = alias; tmp && *tmp; tmp++) 732 if (isspace (*tmp)) 733 *tmp = '_'; 734 735 module_alias_printf(mod, true, "%s", alias); 736 } 737 738 static void do_input(char *alias, 739 kernel_ulong_t *arr, unsigned int min, unsigned int max) 740 { 741 unsigned int i; 742 743 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++) 744 arr[i] = TO_NATIVE(arr[i]); 745 for (i = min; i < max; i++) 746 if (arr[i / BITS_PER_LONG] & (1ULL << (i%BITS_PER_LONG))) 747 sprintf(alias + strlen(alias), "%X,*", i); 748 } 749 750 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */ 751 static void do_input_entry(struct module *mod, void *symval) 752 { 753 char alias[256] = {}; 754 755 DEF_FIELD(symval, input_device_id, flags); 756 DEF_FIELD(symval, input_device_id, bustype); 757 DEF_FIELD(symval, input_device_id, vendor); 758 DEF_FIELD(symval, input_device_id, product); 759 DEF_FIELD(symval, input_device_id, version); 760 DEF_FIELD_ADDR(symval, input_device_id, evbit); 761 DEF_FIELD_ADDR(symval, input_device_id, keybit); 762 DEF_FIELD_ADDR(symval, input_device_id, relbit); 763 DEF_FIELD_ADDR(symval, input_device_id, absbit); 764 DEF_FIELD_ADDR(symval, input_device_id, mscbit); 765 DEF_FIELD_ADDR(symval, input_device_id, ledbit); 766 DEF_FIELD_ADDR(symval, input_device_id, sndbit); 767 DEF_FIELD_ADDR(symval, input_device_id, ffbit); 768 DEF_FIELD_ADDR(symval, input_device_id, swbit); 769 770 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype); 771 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor); 772 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product); 773 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version); 774 775 sprintf(alias + strlen(alias), "-e*"); 776 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT) 777 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX); 778 sprintf(alias + strlen(alias), "k*"); 779 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT) 780 do_input(alias, *keybit, 781 INPUT_DEVICE_ID_KEY_MIN_INTERESTING, 782 INPUT_DEVICE_ID_KEY_MAX); 783 sprintf(alias + strlen(alias), "r*"); 784 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT) 785 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX); 786 sprintf(alias + strlen(alias), "a*"); 787 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT) 788 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX); 789 sprintf(alias + strlen(alias), "m*"); 790 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT) 791 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX); 792 sprintf(alias + strlen(alias), "l*"); 793 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT) 794 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX); 795 sprintf(alias + strlen(alias), "s*"); 796 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT) 797 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX); 798 sprintf(alias + strlen(alias), "f*"); 799 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT) 800 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX); 801 sprintf(alias + strlen(alias), "w*"); 802 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT) 803 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX); 804 805 module_alias_printf(mod, false, "input:%s", alias); 806 } 807 808 static void do_eisa_entry(struct module *mod, void *symval) 809 { 810 DEF_FIELD_ADDR(symval, eisa_device_id, sig); 811 module_alias_printf(mod, false, EISA_DEVICE_MODALIAS_FMT "*", *sig); 812 } 813 814 /* Looks like: parisc:tNhvNrevNsvN */ 815 static void do_parisc_entry(struct module *mod, void *symval) 816 { 817 char alias[256] = {}; 818 819 DEF_FIELD(symval, parisc_device_id, hw_type); 820 DEF_FIELD(symval, parisc_device_id, hversion); 821 DEF_FIELD(symval, parisc_device_id, hversion_rev); 822 DEF_FIELD(symval, parisc_device_id, sversion); 823 824 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type); 825 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion); 826 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev); 827 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion); 828 829 module_alias_printf(mod, true, "parisc:%s", alias); 830 } 831 832 /* Looks like: sdio:cNvNdN. */ 833 static void do_sdio_entry(struct module *mod, void *symval) 834 { 835 char alias[256] = {}; 836 837 DEF_FIELD(symval, sdio_device_id, class); 838 DEF_FIELD(symval, sdio_device_id, vendor); 839 DEF_FIELD(symval, sdio_device_id, device); 840 841 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class); 842 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor); 843 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device); 844 845 module_alias_printf(mod, true, "sdio:%s", alias); 846 } 847 848 /* Looks like: ssb:vNidNrevN. */ 849 static void do_ssb_entry(struct module *mod, void *symval) 850 { 851 char alias[256] = {}; 852 853 DEF_FIELD(symval, ssb_device_id, vendor); 854 DEF_FIELD(symval, ssb_device_id, coreid); 855 DEF_FIELD(symval, ssb_device_id, revision); 856 857 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor); 858 ADD(alias, "id", coreid != SSB_ANY_ID, coreid); 859 ADD(alias, "rev", revision != SSB_ANY_REV, revision); 860 861 module_alias_printf(mod, true, "ssb:%s", alias); 862 } 863 864 /* Looks like: bcma:mNidNrevNclN. */ 865 static void do_bcma_entry(struct module *mod, void *symval) 866 { 867 char alias[256] = {}; 868 869 DEF_FIELD(symval, bcma_device_id, manuf); 870 DEF_FIELD(symval, bcma_device_id, id); 871 DEF_FIELD(symval, bcma_device_id, rev); 872 DEF_FIELD(symval, bcma_device_id, class); 873 874 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf); 875 ADD(alias, "id", id != BCMA_ANY_ID, id); 876 ADD(alias, "rev", rev != BCMA_ANY_REV, rev); 877 ADD(alias, "cl", class != BCMA_ANY_CLASS, class); 878 879 module_alias_printf(mod, true, "bcma:%s", alias); 880 } 881 882 /* Looks like: virtio:dNvN */ 883 static void do_virtio_entry(struct module *mod, void *symval) 884 { 885 char alias[256] = {}; 886 887 DEF_FIELD(symval, virtio_device_id, device); 888 DEF_FIELD(symval, virtio_device_id, vendor); 889 890 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device); 891 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor); 892 893 module_alias_printf(mod, true, "virtio:%s", alias); 894 } 895 896 /* 897 * Looks like: vmbus:guid 898 * Each byte of the guid will be represented by two hex characters 899 * in the name. 900 */ 901 902 static void do_vmbus_entry(struct module *mod, void *symval) 903 { 904 int i; 905 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid); 906 char guid_name[(sizeof(*guid) + 1) * 2]; 907 908 for (i = 0; i < (sizeof(*guid) * 2); i += 2) 909 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2])); 910 911 module_alias_printf(mod, false, "vmbus:%s", guid_name); 912 } 913 914 /* Looks like: rpmsg:S */ 915 static void do_rpmsg_entry(struct module *mod, void *symval) 916 { 917 DEF_FIELD_ADDR(symval, rpmsg_device_id, name); 918 919 module_alias_printf(mod, false, RPMSG_DEVICE_MODALIAS_FMT, *name); 920 } 921 922 /* Looks like: i2c:S */ 923 static void do_i2c_entry(struct module *mod, void *symval) 924 { 925 DEF_FIELD_ADDR(symval, i2c_device_id, name); 926 927 module_alias_printf(mod, false, I2C_MODULE_PREFIX "%s", *name); 928 } 929 930 static void do_i3c_entry(struct module *mod, void *symval) 931 { 932 char alias[256] = {}; 933 934 DEF_FIELD(symval, i3c_device_id, match_flags); 935 DEF_FIELD(symval, i3c_device_id, dcr); 936 DEF_FIELD(symval, i3c_device_id, manuf_id); 937 DEF_FIELD(symval, i3c_device_id, part_id); 938 DEF_FIELD(symval, i3c_device_id, extra_info); 939 940 ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr); 941 ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id); 942 ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id); 943 ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info); 944 945 module_alias_printf(mod, false, "i3c:%s", alias); 946 } 947 948 static void do_slim_entry(struct module *mod, void *symval) 949 { 950 DEF_FIELD(symval, slim_device_id, manf_id); 951 DEF_FIELD(symval, slim_device_id, prod_code); 952 953 module_alias_printf(mod, false, "slim:%x:%x:*", manf_id, prod_code); 954 } 955 956 /* Looks like: spi:S */ 957 static void do_spi_entry(struct module *mod, void *symval) 958 { 959 DEF_FIELD_ADDR(symval, spi_device_id, name); 960 961 module_alias_printf(mod, false, SPI_MODULE_PREFIX "%s", *name); 962 } 963 964 static const struct dmifield { 965 const char *prefix; 966 int field; 967 } dmi_fields[] = { 968 { "bvn", DMI_BIOS_VENDOR }, 969 { "bvr", DMI_BIOS_VERSION }, 970 { "bd", DMI_BIOS_DATE }, 971 { "br", DMI_BIOS_RELEASE }, 972 { "efr", DMI_EC_FIRMWARE_RELEASE }, 973 { "svn", DMI_SYS_VENDOR }, 974 { "pn", DMI_PRODUCT_NAME }, 975 { "pvr", DMI_PRODUCT_VERSION }, 976 { "rvn", DMI_BOARD_VENDOR }, 977 { "rn", DMI_BOARD_NAME }, 978 { "rvr", DMI_BOARD_VERSION }, 979 { "cvn", DMI_CHASSIS_VENDOR }, 980 { "ct", DMI_CHASSIS_TYPE }, 981 { "cvr", DMI_CHASSIS_VERSION }, 982 { NULL, DMI_NONE } 983 }; 984 985 static void dmi_ascii_filter(char *d, const char *s) 986 { 987 /* Filter out characters we don't want to see in the modalias string */ 988 for (; *s; s++) 989 if (*s > ' ' && *s < 127 && *s != ':') 990 *(d++) = *s; 991 992 *d = 0; 993 } 994 995 996 static void do_dmi_entry(struct module *mod, void *symval) 997 { 998 char alias[256] = {}; 999 int i, j; 1000 DEF_FIELD_ADDR(symval, dmi_system_id, matches); 1001 1002 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) { 1003 for (j = 0; j < 4; j++) { 1004 if ((*matches)[j].slot && 1005 (*matches)[j].slot == dmi_fields[i].field) { 1006 sprintf(alias + strlen(alias), ":%s*", 1007 dmi_fields[i].prefix); 1008 dmi_ascii_filter(alias + strlen(alias), 1009 (*matches)[j].substr); 1010 strcat(alias, "*"); 1011 } 1012 } 1013 } 1014 1015 module_alias_printf(mod, false, "dmi*%s:", alias); 1016 } 1017 1018 static void do_platform_entry(struct module *mod, void *symval) 1019 { 1020 DEF_FIELD_ADDR(symval, platform_device_id, name); 1021 1022 module_alias_printf(mod, false, PLATFORM_MODULE_PREFIX "%s", *name); 1023 } 1024 1025 static void do_mdio_entry(struct module *mod, void *symval) 1026 { 1027 char id[33]; 1028 int i; 1029 DEF_FIELD(symval, mdio_device_id, phy_id); 1030 DEF_FIELD(symval, mdio_device_id, phy_id_mask); 1031 1032 for (i = 0; i < 32; i++) { 1033 if (!((phy_id_mask >> (31-i)) & 1)) 1034 id[i] = '?'; 1035 else if ((phy_id >> (31-i)) & 1) 1036 id[i] = '1'; 1037 else 1038 id[i] = '0'; 1039 } 1040 1041 /* Terminate the string */ 1042 id[32] = '\0'; 1043 1044 module_alias_printf(mod, false, MDIO_MODULE_PREFIX "%s", id); 1045 } 1046 1047 /* Looks like: zorro:iN. */ 1048 static void do_zorro_entry(struct module *mod, void *symval) 1049 { 1050 char alias[256] = {}; 1051 DEF_FIELD(symval, zorro_device_id, id); 1052 1053 ADD(alias, "i", id != ZORRO_WILDCARD, id); 1054 1055 module_alias_printf(mod, false, "zorro:%s", alias); 1056 } 1057 1058 /* looks like: "pnp:dD" */ 1059 static void do_isapnp_entry(struct module *mod, void *symval) 1060 { 1061 DEF_FIELD(symval, isapnp_device_id, vendor); 1062 DEF_FIELD(symval, isapnp_device_id, function); 1063 module_alias_printf(mod, false, "pnp:d%c%c%c%x%x%x%x*", 1064 'A' + ((vendor >> 2) & 0x3f) - 1, 1065 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1, 1066 'A' + ((vendor >> 8) & 0x1f) - 1, 1067 (function >> 4) & 0x0f, function & 0x0f, 1068 (function >> 12) & 0x0f, (function >> 8) & 0x0f); 1069 } 1070 1071 /* Looks like: "ipack:fNvNdN". */ 1072 static void do_ipack_entry(struct module *mod, void *symval) 1073 { 1074 char alias[256] = {}; 1075 DEF_FIELD(symval, ipack_device_id, format); 1076 DEF_FIELD(symval, ipack_device_id, vendor); 1077 DEF_FIELD(symval, ipack_device_id, device); 1078 1079 ADD(alias, "f", format != IPACK_ANY_FORMAT, format); 1080 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor); 1081 ADD(alias, "d", device != IPACK_ANY_ID, device); 1082 1083 module_alias_printf(mod, true, "ipack:%s", alias); 1084 } 1085 1086 /* 1087 * Append a match expression for a single masked hex digit. 1088 * outp points to a pointer to the character at which to append. 1089 * *outp is updated on return to point just after the appended text, 1090 * to facilitate further appending. 1091 */ 1092 static void append_nibble_mask(char **outp, 1093 unsigned int nibble, unsigned int mask) 1094 { 1095 char *p = *outp; 1096 unsigned int i; 1097 1098 switch (mask) { 1099 case 0: 1100 *p++ = '?'; 1101 break; 1102 1103 case 0xf: 1104 p += sprintf(p, "%X", nibble); 1105 break; 1106 1107 default: 1108 /* 1109 * Dumbly emit a match pattern for all possible matching 1110 * digits. This could be improved in some cases using ranges, 1111 * but it has the advantage of being trivially correct, and is 1112 * often optimal. 1113 */ 1114 *p++ = '['; 1115 for (i = 0; i < 0x10; i++) 1116 if ((i & mask) == nibble) 1117 p += sprintf(p, "%X", i); 1118 *p++ = ']'; 1119 } 1120 1121 /* Ensure that the string remains NUL-terminated: */ 1122 *p = '\0'; 1123 1124 /* Advance the caller's end-of-string pointer: */ 1125 *outp = p; 1126 } 1127 1128 /* 1129 * looks like: "amba:dN" 1130 * 1131 * N is exactly 8 digits, where each is an upper-case hex digit, or 1132 * a ? or [] pattern matching exactly one digit. 1133 */ 1134 static void do_amba_entry(struct module *mod, void *symval) 1135 { 1136 char alias[256]; 1137 unsigned int digit; 1138 char *p = alias; 1139 DEF_FIELD(symval, amba_id, id); 1140 DEF_FIELD(symval, amba_id, mask); 1141 1142 if ((id & mask) != id) 1143 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: id=0x%08X, mask=0x%08X. Please fix this driver.\n", 1144 mod->name, id, mask); 1145 1146 for (digit = 0; digit < 8; digit++) 1147 append_nibble_mask(&p, 1148 (id >> (4 * (7 - digit))) & 0xf, 1149 (mask >> (4 * (7 - digit))) & 0xf); 1150 1151 module_alias_printf(mod, false, "amba:d%s", alias); 1152 } 1153 1154 /* 1155 * looks like: "mipscdmm:tN" 1156 * 1157 * N is exactly 2 digits, where each is an upper-case hex digit, or 1158 * a ? or [] pattern matching exactly one digit. 1159 */ 1160 static void do_mips_cdmm_entry(struct module *mod, void *symval) 1161 { 1162 DEF_FIELD(symval, mips_cdmm_device_id, type); 1163 1164 module_alias_printf(mod, false, "mipscdmm:t%02X*", type); 1165 } 1166 1167 /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,* 1168 * All fields are numbers. It would be nicer to use strings for vendor 1169 * and feature, but getting those out of the build system here is too 1170 * complicated. 1171 */ 1172 1173 static void do_x86cpu_entry(struct module *mod, void *symval) 1174 { 1175 char alias[256] = {}; 1176 1177 DEF_FIELD(symval, x86_cpu_id, feature); 1178 DEF_FIELD(symval, x86_cpu_id, family); 1179 DEF_FIELD(symval, x86_cpu_id, model); 1180 DEF_FIELD(symval, x86_cpu_id, vendor); 1181 1182 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor); 1183 ADD(alias, "fam", family != X86_FAMILY_ANY, family); 1184 ADD(alias, "mod", model != X86_MODEL_ANY, model); 1185 strcat(alias, ":feature:*"); 1186 if (feature != X86_FEATURE_ANY) 1187 sprintf(alias + strlen(alias), "%04X*", feature); 1188 1189 module_alias_printf(mod, false, "cpu:type:x86,%s", alias); 1190 } 1191 1192 /* LOOKS like cpu:type:*:feature:*FEAT* */ 1193 static void do_cpu_entry(struct module *mod, void *symval) 1194 { 1195 DEF_FIELD(symval, cpu_feature, feature); 1196 1197 module_alias_printf(mod, false, "cpu:type:*:feature:*%04X*", feature); 1198 } 1199 1200 /* Looks like: mei:S:uuid:N:* */ 1201 static void do_mei_entry(struct module *mod, void *symval) 1202 { 1203 char alias[256] = {}; 1204 1205 DEF_FIELD_ADDR(symval, mei_cl_device_id, name); 1206 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid); 1207 DEF_FIELD(symval, mei_cl_device_id, version); 1208 1209 add_uuid(alias, *uuid); 1210 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version); 1211 1212 module_alias_printf(mod, false, MEI_CL_MODULE_PREFIX "%s:%s:*", 1213 (*name)[0] ? *name : "*", alias); 1214 } 1215 1216 /* Looks like: rapidio:vNdNavNadN */ 1217 static void do_rio_entry(struct module *mod, void *symval) 1218 { 1219 char alias[256] = {}; 1220 1221 DEF_FIELD(symval, rio_device_id, did); 1222 DEF_FIELD(symval, rio_device_id, vid); 1223 DEF_FIELD(symval, rio_device_id, asm_did); 1224 DEF_FIELD(symval, rio_device_id, asm_vid); 1225 1226 ADD(alias, "v", vid != RIO_ANY_ID, vid); 1227 ADD(alias, "d", did != RIO_ANY_ID, did); 1228 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid); 1229 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did); 1230 1231 module_alias_printf(mod, true, "rapidio:%s", alias); 1232 } 1233 1234 /* Looks like: ulpi:vNpN */ 1235 static void do_ulpi_entry(struct module *mod, void *symval) 1236 { 1237 DEF_FIELD(symval, ulpi_device_id, vendor); 1238 DEF_FIELD(symval, ulpi_device_id, product); 1239 1240 module_alias_printf(mod, false, "ulpi:v%04xp%04x", vendor, product); 1241 } 1242 1243 /* Looks like: hdaudio:vNrNaN */ 1244 static void do_hda_entry(struct module *mod, void *symval) 1245 { 1246 char alias[256] = {}; 1247 1248 DEF_FIELD(symval, hda_device_id, vendor_id); 1249 DEF_FIELD(symval, hda_device_id, rev_id); 1250 DEF_FIELD(symval, hda_device_id, api_version); 1251 1252 ADD(alias, "v", vendor_id != 0, vendor_id); 1253 ADD(alias, "r", rev_id != 0, rev_id); 1254 ADD(alias, "a", api_version != 0, api_version); 1255 1256 module_alias_printf(mod, true, "hdaudio:%s", alias); 1257 } 1258 1259 /* Looks like: sdw:mNpNvNcN */ 1260 static void do_sdw_entry(struct module *mod, void *symval) 1261 { 1262 char alias[256] = {}; 1263 1264 DEF_FIELD(symval, sdw_device_id, mfg_id); 1265 DEF_FIELD(symval, sdw_device_id, part_id); 1266 DEF_FIELD(symval, sdw_device_id, sdw_version); 1267 DEF_FIELD(symval, sdw_device_id, class_id); 1268 1269 ADD(alias, "m", mfg_id != 0, mfg_id); 1270 ADD(alias, "p", part_id != 0, part_id); 1271 ADD(alias, "v", sdw_version != 0, sdw_version); 1272 ADD(alias, "c", class_id != 0, class_id); 1273 1274 module_alias_printf(mod, true, "sdw:%s", alias); 1275 } 1276 1277 /* Looks like: fsl-mc:vNdN */ 1278 static void do_fsl_mc_entry(struct module *mod, void *symval) 1279 { 1280 DEF_FIELD(symval, fsl_mc_device_id, vendor); 1281 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type); 1282 1283 module_alias_printf(mod, false, "fsl-mc:v%08Xd%s", vendor, *obj_type); 1284 } 1285 1286 /* Looks like: tbsvc:kSpNvNrN */ 1287 static void do_tbsvc_entry(struct module *mod, void *symval) 1288 { 1289 char alias[256] = {}; 1290 1291 DEF_FIELD(symval, tb_service_id, match_flags); 1292 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key); 1293 DEF_FIELD(symval, tb_service_id, protocol_id); 1294 DEF_FIELD(symval, tb_service_id, protocol_version); 1295 DEF_FIELD(symval, tb_service_id, protocol_revision); 1296 1297 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY) 1298 sprintf(alias + strlen(alias), "k%s", *protocol_key); 1299 else 1300 strcat(alias + strlen(alias), "k*"); 1301 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id); 1302 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION, 1303 protocol_version); 1304 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION, 1305 protocol_revision); 1306 1307 module_alias_printf(mod, true, "tbsvc:%s", alias); 1308 } 1309 1310 /* Looks like: typec:idNmN */ 1311 static void do_typec_entry(struct module *mod, void *symval) 1312 { 1313 char alias[256] = {}; 1314 1315 DEF_FIELD(symval, typec_device_id, svid); 1316 DEF_FIELD(symval, typec_device_id, mode); 1317 1318 ADD(alias, "m", mode != TYPEC_ANY_MODE, mode); 1319 1320 module_alias_printf(mod, false, "typec:id%04X%s", svid, alias); 1321 } 1322 1323 /* Looks like: tee:uuid */ 1324 static void do_tee_entry(struct module *mod, void *symval) 1325 { 1326 DEF_FIELD_ADDR(symval, tee_client_device_id, uuid); 1327 1328 module_alias_printf(mod, true, 1329 "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", 1330 uuid->b[0], uuid->b[1], uuid->b[2], uuid->b[3], uuid->b[4], 1331 uuid->b[5], uuid->b[6], uuid->b[7], uuid->b[8], uuid->b[9], 1332 uuid->b[10], uuid->b[11], uuid->b[12], uuid->b[13], uuid->b[14], 1333 uuid->b[15]); 1334 } 1335 1336 /* Looks like: wmi:guid */ 1337 static void do_wmi_entry(struct module *mod, void *symval) 1338 { 1339 DEF_FIELD_ADDR(symval, wmi_device_id, guid_string); 1340 1341 if (strlen(*guid_string) != UUID_STRING_LEN) { 1342 warn("Invalid WMI device id 'wmi:%s' in '%s'\n", 1343 *guid_string, mod->name); 1344 return; 1345 } 1346 1347 module_alias_printf(mod, false, WMI_MODULE_PREFIX "%s", *guid_string); 1348 } 1349 1350 /* Looks like: mhi:S */ 1351 static void do_mhi_entry(struct module *mod, void *symval) 1352 { 1353 DEF_FIELD_ADDR(symval, mhi_device_id, chan); 1354 module_alias_printf(mod, false, MHI_DEVICE_MODALIAS_FMT, *chan); 1355 } 1356 1357 /* Looks like: mhi_ep:S */ 1358 static void do_mhi_ep_entry(struct module *mod, void *symval) 1359 { 1360 DEF_FIELD_ADDR(symval, mhi_device_id, chan); 1361 1362 module_alias_printf(mod, false, MHI_EP_DEVICE_MODALIAS_FMT, *chan); 1363 } 1364 1365 /* Looks like: ishtp:{guid} */ 1366 static void do_ishtp_entry(struct module *mod, void *symval) 1367 { 1368 char alias[256] = {}; 1369 DEF_FIELD_ADDR(symval, ishtp_device_id, guid); 1370 1371 add_guid(alias, *guid); 1372 1373 module_alias_printf(mod, false, ISHTP_MODULE_PREFIX "{%s}", alias); 1374 } 1375 1376 static void do_auxiliary_entry(struct module *mod, void *symval) 1377 { 1378 DEF_FIELD_ADDR(symval, auxiliary_device_id, name); 1379 1380 module_alias_printf(mod, false, AUXILIARY_MODULE_PREFIX "%s", *name); 1381 } 1382 1383 /* 1384 * Looks like: ssam:dNcNtNiNfN 1385 * 1386 * N is exactly 2 digits, where each is an upper-case hex digit. 1387 */ 1388 static void do_ssam_entry(struct module *mod, void *symval) 1389 { 1390 char alias[256] = {}; 1391 1392 DEF_FIELD(symval, ssam_device_id, match_flags); 1393 DEF_FIELD(symval, ssam_device_id, domain); 1394 DEF_FIELD(symval, ssam_device_id, category); 1395 DEF_FIELD(symval, ssam_device_id, target); 1396 DEF_FIELD(symval, ssam_device_id, instance); 1397 DEF_FIELD(symval, ssam_device_id, function); 1398 1399 ADD(alias, "t", match_flags & SSAM_MATCH_TARGET, target); 1400 ADD(alias, "i", match_flags & SSAM_MATCH_INSTANCE, instance); 1401 ADD(alias, "f", match_flags & SSAM_MATCH_FUNCTION, function); 1402 1403 module_alias_printf(mod, false, "ssam:d%02Xc%02X%s", 1404 domain, category, alias); 1405 } 1406 1407 /* Looks like: dfl:tNfN */ 1408 static void do_dfl_entry(struct module *mod, void *symval) 1409 { 1410 DEF_FIELD(symval, dfl_device_id, type); 1411 DEF_FIELD(symval, dfl_device_id, feature_id); 1412 1413 module_alias_printf(mod, true, "dfl:t%04Xf%04X", type, feature_id); 1414 } 1415 1416 /* Looks like: cdx:vNdN */ 1417 static void do_cdx_entry(struct module *mod, void *symval) 1418 { 1419 char alias[256]; 1420 1421 DEF_FIELD(symval, cdx_device_id, vendor); 1422 DEF_FIELD(symval, cdx_device_id, device); 1423 DEF_FIELD(symval, cdx_device_id, subvendor); 1424 DEF_FIELD(symval, cdx_device_id, subdevice); 1425 DEF_FIELD(symval, cdx_device_id, class); 1426 DEF_FIELD(symval, cdx_device_id, class_mask); 1427 DEF_FIELD(symval, cdx_device_id, override_only); 1428 1429 switch (override_only) { 1430 case 0: 1431 strcpy(alias, "cdx:"); 1432 break; 1433 case CDX_ID_F_VFIO_DRIVER_OVERRIDE: 1434 strcpy(alias, "vfio_cdx:"); 1435 break; 1436 default: 1437 warn("Unknown CDX driver_override alias %08X\n", 1438 override_only); 1439 return; 1440 } 1441 1442 ADD(alias, "v", vendor != CDX_ANY_ID, vendor); 1443 ADD(alias, "d", device != CDX_ANY_ID, device); 1444 ADD(alias, "sv", subvendor != CDX_ANY_ID, subvendor); 1445 ADD(alias, "sd", subdevice != CDX_ANY_ID, subdevice); 1446 ADD(alias, "c", class_mask == 0xFFFFFF, class); 1447 1448 module_alias_printf(mod, false, "%s", alias); 1449 } 1450 1451 static void do_vchiq_entry(struct module *mod, void *symval) 1452 { 1453 DEF_FIELD_ADDR(symval, vchiq_device_id, name); 1454 1455 module_alias_printf(mod, false, "vchiq:%s", *name); 1456 } 1457 1458 /* Looks like: coreboot:tN */ 1459 static void do_coreboot_entry(struct module *mod, void *symval) 1460 { 1461 DEF_FIELD(symval, coreboot_device_id, tag); 1462 1463 module_alias_printf(mod, false, "coreboot:t%08X", tag); 1464 } 1465 1466 /* Does namelen bytes of name exactly match the symbol? */ 1467 static bool sym_is(const char *name, unsigned namelen, const char *symbol) 1468 { 1469 if (namelen != strlen(symbol)) 1470 return false; 1471 1472 return memcmp(name, symbol, namelen) == 0; 1473 } 1474 1475 static void do_table(void *symval, unsigned long size, 1476 unsigned long id_size, 1477 const char *device_id, 1478 void (*do_entry)(struct module *mod, void *symval), 1479 struct module *mod) 1480 { 1481 unsigned int i; 1482 1483 device_id_check(mod->name, device_id, size, id_size, symval); 1484 /* Leave last one: it's the terminator. */ 1485 size -= id_size; 1486 1487 for (i = 0; i < size; i += id_size) 1488 do_entry(mod, symval + i); 1489 } 1490 1491 static const struct devtable devtable[] = { 1492 {"hid", SIZE_hid_device_id, do_hid_entry}, 1493 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry}, 1494 {"pci", SIZE_pci_device_id, do_pci_entry}, 1495 {"ccw", SIZE_ccw_device_id, do_ccw_entry}, 1496 {"ap", SIZE_ap_device_id, do_ap_entry}, 1497 {"css", SIZE_css_device_id, do_css_entry}, 1498 {"serio", SIZE_serio_device_id, do_serio_entry}, 1499 {"acpi", SIZE_acpi_device_id, do_acpi_entry}, 1500 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry}, 1501 {"vio", SIZE_vio_device_id, do_vio_entry}, 1502 {"input", SIZE_input_device_id, do_input_entry}, 1503 {"eisa", SIZE_eisa_device_id, do_eisa_entry}, 1504 {"parisc", SIZE_parisc_device_id, do_parisc_entry}, 1505 {"sdio", SIZE_sdio_device_id, do_sdio_entry}, 1506 {"ssb", SIZE_ssb_device_id, do_ssb_entry}, 1507 {"bcma", SIZE_bcma_device_id, do_bcma_entry}, 1508 {"virtio", SIZE_virtio_device_id, do_virtio_entry}, 1509 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry}, 1510 {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry}, 1511 {"i2c", SIZE_i2c_device_id, do_i2c_entry}, 1512 {"i3c", SIZE_i3c_device_id, do_i3c_entry}, 1513 {"slim", SIZE_slim_device_id, do_slim_entry}, 1514 {"spi", SIZE_spi_device_id, do_spi_entry}, 1515 {"dmi", SIZE_dmi_system_id, do_dmi_entry}, 1516 {"platform", SIZE_platform_device_id, do_platform_entry}, 1517 {"mdio", SIZE_mdio_device_id, do_mdio_entry}, 1518 {"zorro", SIZE_zorro_device_id, do_zorro_entry}, 1519 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry}, 1520 {"ipack", SIZE_ipack_device_id, do_ipack_entry}, 1521 {"amba", SIZE_amba_id, do_amba_entry}, 1522 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry}, 1523 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry}, 1524 {"cpu", SIZE_cpu_feature, do_cpu_entry}, 1525 {"mei", SIZE_mei_cl_device_id, do_mei_entry}, 1526 {"rapidio", SIZE_rio_device_id, do_rio_entry}, 1527 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry}, 1528 {"hdaudio", SIZE_hda_device_id, do_hda_entry}, 1529 {"sdw", SIZE_sdw_device_id, do_sdw_entry}, 1530 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry}, 1531 {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry}, 1532 {"typec", SIZE_typec_device_id, do_typec_entry}, 1533 {"tee", SIZE_tee_client_device_id, do_tee_entry}, 1534 {"wmi", SIZE_wmi_device_id, do_wmi_entry}, 1535 {"mhi", SIZE_mhi_device_id, do_mhi_entry}, 1536 {"mhi_ep", SIZE_mhi_device_id, do_mhi_ep_entry}, 1537 {"auxiliary", SIZE_auxiliary_device_id, do_auxiliary_entry}, 1538 {"ssam", SIZE_ssam_device_id, do_ssam_entry}, 1539 {"dfl", SIZE_dfl_device_id, do_dfl_entry}, 1540 {"ishtp", SIZE_ishtp_device_id, do_ishtp_entry}, 1541 {"cdx", SIZE_cdx_device_id, do_cdx_entry}, 1542 {"vchiq", SIZE_vchiq_device_id, do_vchiq_entry}, 1543 {"coreboot", SIZE_coreboot_device_id, do_coreboot_entry}, 1544 }; 1545 1546 /* Create MODULE_ALIAS() statements. 1547 * At this time, we cannot write the actual output C source yet, 1548 * so we write into the mod->dev_table_buf buffer. */ 1549 void handle_moddevtable(struct module *mod, struct elf_info *info, 1550 Elf_Sym *sym, const char *symname) 1551 { 1552 void *symval; 1553 char *zeros = NULL; 1554 const char *name, *identifier; 1555 unsigned int namelen; 1556 1557 /* We're looking for a section relative symbol */ 1558 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections) 1559 return; 1560 1561 /* We're looking for an object */ 1562 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT) 1563 return; 1564 1565 /* All our symbols are of form __mod_<name>__<identifier>_device_table. */ 1566 if (strncmp(symname, "__mod_", strlen("__mod_"))) 1567 return; 1568 name = symname + strlen("__mod_"); 1569 namelen = strlen(name); 1570 if (namelen < strlen("_device_table")) 1571 return; 1572 if (strcmp(name + namelen - strlen("_device_table"), "_device_table")) 1573 return; 1574 identifier = strstr(name, "__"); 1575 if (!identifier) 1576 return; 1577 namelen = identifier - name; 1578 1579 /* Handle all-NULL symbols allocated into .bss */ 1580 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) { 1581 zeros = calloc(1, sym->st_size); 1582 symval = zeros; 1583 } else { 1584 symval = sym_get_data(info, sym); 1585 } 1586 1587 /* First handle the "special" cases */ 1588 if (sym_is(name, namelen, "usb")) 1589 do_usb_table(symval, sym->st_size, mod); 1590 else if (sym_is(name, namelen, "of")) 1591 do_of_table(symval, sym->st_size, mod); 1592 else if (sym_is(name, namelen, "pnp")) 1593 do_pnp_device_entry(symval, sym->st_size, mod); 1594 else if (sym_is(name, namelen, "pnp_card")) 1595 do_pnp_card_entries(symval, sym->st_size, mod); 1596 else { 1597 int i; 1598 1599 for (i = 0; i < ARRAY_SIZE(devtable); i++) { 1600 const struct devtable *p = &devtable[i]; 1601 1602 if (sym_is(name, namelen, p->device_id)) { 1603 do_table(symval, sym->st_size, p->id_size, 1604 p->device_id, p->do_entry, mod); 1605 break; 1606 } 1607 } 1608 } 1609 free(zeros); 1610 } 1611