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