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