1 /* Simple code to turn various tables in an ELF file into alias definitions. 2 * This deals with kernel datastructures where they should be 3 * dealt with: in the kernel source. 4 * 5 * Copyright 2002-2003 Rusty Russell, IBM Corporation 6 * 2003 Kai Germaschewski 7 * 8 * 9 * This software may be used and distributed according to the terms 10 * of the GNU General Public License, incorporated herein by reference. 11 */ 12 13 #include <stdarg.h> 14 #include <stdio.h> 15 16 #include "list.h" 17 #include "xalloc.h" 18 19 #include "modpost.h" 20 #include "devicetable-offsets.h" 21 22 /* We use the ELF typedefs for kernel_ulong_t but bite the bullet and 23 * use either stdint.h or inttypes.h for the rest. */ 24 #if KERNEL_ELFCLASS == ELFCLASS32 25 typedef Elf32_Addr kernel_ulong_t; 26 #define BITS_PER_LONG 32 27 #else 28 typedef Elf64_Addr kernel_ulong_t; 29 #define BITS_PER_LONG 64 30 #endif 31 #ifdef __sun__ 32 #include <inttypes.h> 33 #else 34 #include <stdint.h> 35 #endif 36 37 #include <ctype.h> 38 #include <stdbool.h> 39 40 /** 41 * module_alias_printf - add auto-generated MODULE_ALIAS() 42 * 43 * @mod: module 44 * @append_wildcard: append '*' for future extension if not exist yet 45 * @fmt: printf(3)-like format 46 */ 47 static void __attribute__((format (printf, 3, 4))) 48 module_alias_printf(struct module *mod, bool append_wildcard, 49 const char *fmt, ...) 50 { 51 struct module_alias *new, *als; 52 size_t len; 53 int n; 54 va_list ap; 55 56 /* Determine required size. */ 57 va_start(ap, fmt); 58 n = vsnprintf(NULL, 0, fmt, ap); 59 va_end(ap); 60 61 if (n < 0) { 62 error("vsnprintf failed\n"); 63 return; 64 } 65 66 len = n + 1; /* extra byte for '\0' */ 67 68 if (append_wildcard) 69 len++; /* extra byte for '*' */ 70 71 new = xmalloc(sizeof(*new) + len); 72 73 /* Now, really print it to the allocated buffer */ 74 va_start(ap, fmt); 75 n = vsnprintf(new->str, len, fmt, ap); 76 va_end(ap); 77 78 if (n < 0) { 79 error("vsnprintf failed\n"); 80 free(new); 81 return; 82 } 83 84 if (append_wildcard && (n == 0 || new->str[n - 1] != '*')) { 85 new->str[n] = '*'; 86 new->str[n + 1] = '\0'; 87 } 88 89 /* avoid duplication */ 90 list_for_each_entry(als, &mod->aliases, node) { 91 if (!strcmp(als->str, new->str)) { 92 free(new); 93 return; 94 } 95 } 96 97 list_add_tail(&new->node, &mod->aliases); 98 } 99 100 typedef uint32_t __u32; 101 typedef uint16_t __u16; 102 typedef unsigned char __u8; 103 104 /* UUID types for backward compatibility, don't use in new code */ 105 typedef struct { 106 __u8 b[16]; 107 } guid_t; 108 109 typedef struct { 110 __u8 b[16]; 111 } uuid_t; 112 113 #define UUID_STRING_LEN 36 114 115 /* MEI UUID type, don't use anywhere else */ 116 typedef struct { 117 __u8 b[16]; 118 } uuid_le; 119 120 /* Big exception to the "don't include kernel headers into userspace, which 121 * even potentially has different endianness and word sizes, since 122 * we handle those differences explicitly below */ 123 #include "../../include/linux/mod_devicetable.h" 124 125 /* This array collects all instances that use the generic do_table */ 126 struct devtable { 127 const char *device_id; /* name of table, __mod_<name>__*_device_table. */ 128 unsigned long id_size; 129 void (*do_entry)(struct module *mod, void *symval); 130 }; 131 132 /* Define a variable f that holds the value of field f of struct devid 133 * based at address m. 134 */ 135 #define DEF_FIELD(m, devid, f) \ 136 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) 137 138 /* Define a variable f that holds the address of field f of struct devid 139 * based at address m. Due to the way typeof works, for a field of type 140 * T[N] the variable has type T(*)[N], _not_ T*. 141 */ 142 #define DEF_FIELD_ADDR(m, devid, f) \ 143 typeof(((struct devid *)0)->f) *f = ((m) + OFF_##devid##_##f) 144 145 #define ADD(str, sep, cond, field) \ 146 do { \ 147 strcat(str, sep); \ 148 if (cond) \ 149 sprintf(str + strlen(str), \ 150 sizeof(field) == 1 ? "%02X" : \ 151 sizeof(field) == 2 ? "%04X" : \ 152 sizeof(field) == 4 ? "%08X" : "", \ 153 field); \ 154 else \ 155 sprintf(str + strlen(str), "*"); \ 156 } while(0) 157 158 static inline void add_uuid(char *str, uuid_le uuid) 159 { 160 int len = strlen(str); 161 162 sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", 163 uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0], 164 uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6], 165 uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11], 166 uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]); 167 } 168 169 static inline void add_guid(char *str, guid_t guid) 170 { 171 int len = strlen(str); 172 173 sprintf(str + len, "%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X", 174 guid.b[3], guid.b[2], guid.b[1], guid.b[0], 175 guid.b[5], guid.b[4], guid.b[7], guid.b[6], 176 guid.b[8], guid.b[9], guid.b[10], guid.b[11], 177 guid.b[12], guid.b[13], guid.b[14], guid.b[15]); 178 } 179 180 /** 181 * Check that sizeof(device_id type) are consistent with size of section 182 * in .o file. If in-consistent then userspace and kernel does not agree 183 * on actual size which is a bug. 184 * Also verify that the final entry in the table is all zeros. 185 * Ignore both checks if build host differ from target host and size differs. 186 **/ 187 static void device_id_check(const char *modname, const char *device_id, 188 unsigned long size, unsigned long id_size, 189 void *symval) 190 { 191 int i; 192 193 if (size % id_size || size < id_size) { 194 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo of the size of section __mod_%s__<identifier>_device_table=%lu.\n" 195 "Fix definition of struct %s_device_id in mod_devicetable.h\n", 196 modname, device_id, id_size, device_id, size, device_id); 197 } 198 /* Verify last one is a terminator */ 199 for (i = 0; i < id_size; i++ ) { 200 if (*(uint8_t*)(symval+size-id_size+i)) { 201 fprintf(stderr, 202 "%s: struct %s_device_id is %lu bytes. The last of %lu is:\n", 203 modname, device_id, id_size, size / id_size); 204 for (i = 0; i < id_size; i++ ) 205 fprintf(stderr,"0x%02x ", 206 *(uint8_t*)(symval+size-id_size+i) ); 207 fprintf(stderr,"\n"); 208 fatal("%s: struct %s_device_id is not terminated with a NULL entry!\n", 209 modname, device_id); 210 } 211 } 212 } 213 214 /* USB is special because the bcdDevice can be matched against a numeric range */ 215 /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */ 216 static void do_usb_entry(void *symval, 217 unsigned int bcdDevice_initial, int bcdDevice_initial_digits, 218 unsigned char range_lo, unsigned char range_hi, 219 unsigned char max, struct module *mod) 220 { 221 char alias[500]; 222 DEF_FIELD(symval, usb_device_id, match_flags); 223 DEF_FIELD(symval, usb_device_id, idVendor); 224 DEF_FIELD(symval, usb_device_id, idProduct); 225 DEF_FIELD(symval, usb_device_id, bcdDevice_lo); 226 DEF_FIELD(symval, usb_device_id, bDeviceClass); 227 DEF_FIELD(symval, usb_device_id, bDeviceSubClass); 228 DEF_FIELD(symval, usb_device_id, bDeviceProtocol); 229 DEF_FIELD(symval, usb_device_id, bInterfaceClass); 230 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass); 231 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol); 232 DEF_FIELD(symval, usb_device_id, bInterfaceNumber); 233 234 strcpy(alias, "usb:"); 235 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR, 236 idVendor); 237 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT, 238 idProduct); 239 240 strcat(alias, "d"); 241 if (bcdDevice_initial_digits) 242 sprintf(alias + strlen(alias), "%0*X", 243 bcdDevice_initial_digits, bcdDevice_initial); 244 if (range_lo == range_hi) 245 sprintf(alias + strlen(alias), "%X", range_lo); 246 else if (range_lo > 0 || range_hi < max) { 247 if (range_lo > 0x9 || range_hi < 0xA) 248 sprintf(alias + strlen(alias), 249 "[%X-%X]", 250 range_lo, 251 range_hi); 252 else { 253 sprintf(alias + strlen(alias), 254 range_lo < 0x9 ? "[%X-9" : "[%X", 255 range_lo); 256 sprintf(alias + strlen(alias), 257 range_hi > 0xA ? "A-%X]" : "%X]", 258 range_hi); 259 } 260 } 261 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1)) 262 strcat(alias, "*"); 263 264 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS, 265 bDeviceClass); 266 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS, 267 bDeviceSubClass); 268 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL, 269 bDeviceProtocol); 270 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS, 271 bInterfaceClass); 272 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS, 273 bInterfaceSubClass); 274 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL, 275 bInterfaceProtocol); 276 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER, 277 bInterfaceNumber); 278 279 module_alias_printf(mod, true, "%s", alias); 280 } 281 282 /* Handles increment/decrement of BCD formatted integers */ 283 /* Returns the previous value, so it works like i++ or i-- */ 284 static unsigned int incbcd(unsigned int *bcd, 285 int inc, 286 unsigned char max, 287 size_t chars) 288 { 289 unsigned int init = *bcd, i, j; 290 unsigned long long c, dec = 0; 291 292 /* If bcd is not in BCD format, just increment */ 293 if (max > 0x9) { 294 *bcd += inc; 295 return init; 296 } 297 298 /* Convert BCD to Decimal */ 299 for (i=0 ; i < chars ; i++) { 300 c = (*bcd >> (i << 2)) & 0xf; 301 c = c > 9 ? 9 : c; /* force to bcd just in case */ 302 for (j=0 ; j < i ; j++) 303 c = c * 10; 304 dec += c; 305 } 306 307 /* Do our increment/decrement */ 308 dec += inc; 309 *bcd = 0; 310 311 /* Convert back to BCD */ 312 for (i=0 ; i < chars ; i++) { 313 for (c=1,j=0 ; j < i ; j++) 314 c = c * 10; 315 c = (dec / c) % 10; 316 *bcd += c << (i << 2); 317 } 318 return init; 319 } 320 321 static void do_usb_entry_multi(void *symval, struct module *mod) 322 { 323 unsigned int devlo, devhi; 324 unsigned char chi, clo, max; 325 int ndigits; 326 327 DEF_FIELD(symval, usb_device_id, match_flags); 328 DEF_FIELD(symval, usb_device_id, idVendor); 329 DEF_FIELD(symval, usb_device_id, idProduct); 330 DEF_FIELD(symval, usb_device_id, bcdDevice_lo); 331 DEF_FIELD(symval, usb_device_id, bcdDevice_hi); 332 DEF_FIELD(symval, usb_device_id, bDeviceClass); 333 DEF_FIELD(symval, usb_device_id, bInterfaceClass); 334 335 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ? 336 bcdDevice_lo : 0x0U; 337 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ? 338 bcdDevice_hi : ~0x0U; 339 340 /* Figure out if this entry is in bcd or hex format */ 341 max = 0x9; /* Default to decimal format */ 342 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) { 343 clo = (devlo >> (ndigits << 2)) & 0xf; 344 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf; 345 if (clo > max || chi > max) { 346 max = 0xf; 347 break; 348 } 349 } 350 351 /* 352 * Some modules (visor) have empty slots as placeholder for 353 * run-time specification that results in catch-all alias 354 */ 355 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass)) 356 return; 357 358 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */ 359 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) { 360 clo = devlo & 0xf; 361 chi = devhi & 0xf; 362 if (chi > max) /* If we are in bcd mode, truncate if necessary */ 363 chi = max; 364 devlo >>= 4; 365 devhi >>= 4; 366 367 if (devlo == devhi || !ndigits) { 368 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod); 369 break; 370 } 371 372 if (clo > 0x0) 373 do_usb_entry(symval, 374 incbcd(&devlo, 1, max, 375 sizeof(bcdDevice_lo) * 2), 376 ndigits, clo, max, max, mod); 377 378 if (chi < max) 379 do_usb_entry(symval, 380 incbcd(&devhi, -1, max, 381 sizeof(bcdDevice_lo) * 2), 382 ndigits, 0x0, chi, max, mod); 383 } 384 } 385 386 static void do_usb_table(void *symval, unsigned long size, 387 struct module *mod) 388 { 389 unsigned int i; 390 const unsigned long id_size = SIZE_usb_device_id; 391 392 device_id_check(mod->name, "usb", size, id_size, symval); 393 394 /* Leave last one: it's the terminator. */ 395 size -= id_size; 396 397 for (i = 0; i < size; i += id_size) 398 do_usb_entry_multi(symval + i, mod); 399 } 400 401 static void do_of_entry(struct module *mod, void *symval) 402 { 403 char alias[500]; 404 int len; 405 char *tmp; 406 407 DEF_FIELD_ADDR(symval, of_device_id, name); 408 DEF_FIELD_ADDR(symval, of_device_id, type); 409 DEF_FIELD_ADDR(symval, of_device_id, compatible); 410 411 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*", 412 (*type)[0] ? *type : "*"); 413 414 if ((*compatible)[0]) 415 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "", 416 *compatible); 417 418 /* Replace all whitespace with underscores */ 419 for (tmp = alias; tmp && *tmp; tmp++) 420 if (isspace(*tmp)) 421 *tmp = '_'; 422 423 module_alias_printf(mod, false, "%s", alias); 424 module_alias_printf(mod, false, "%sC*", alias); 425 } 426 427 /* Looks like: hid:bNvNpN */ 428 static void do_hid_entry(struct module *mod, void *symval) 429 { 430 char alias[256] = {}; 431 432 DEF_FIELD(symval, hid_device_id, bus); 433 DEF_FIELD(symval, hid_device_id, group); 434 DEF_FIELD(symval, hid_device_id, vendor); 435 DEF_FIELD(symval, hid_device_id, product); 436 437 ADD(alias, "b", bus != HID_BUS_ANY, bus); 438 ADD(alias, "g", group != HID_GROUP_ANY, group); 439 ADD(alias, "v", vendor != HID_ANY_ID, vendor); 440 ADD(alias, "p", product != HID_ANY_ID, product); 441 442 module_alias_printf(mod, false, "hid:%s", alias); 443 } 444 445 /* Looks like: ieee1394:venNmoNspNverN */ 446 static void do_ieee1394_entry(struct module *mod, void *symval) 447 { 448 char alias[256] = {}; 449 450 DEF_FIELD(symval, ieee1394_device_id, match_flags); 451 DEF_FIELD(symval, ieee1394_device_id, vendor_id); 452 DEF_FIELD(symval, ieee1394_device_id, model_id); 453 DEF_FIELD(symval, ieee1394_device_id, specifier_id); 454 DEF_FIELD(symval, ieee1394_device_id, version); 455 456 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID, 457 vendor_id); 458 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID, 459 model_id); 460 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID, 461 specifier_id); 462 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION, 463 version); 464 465 module_alias_printf(mod, true, "ieee1394:%s", alias); 466 } 467 468 /* Looks like: pci:vNdNsvNsdNbcNscNiN or <prefix>_pci:vNdNsvNsdNbcNscNiN. */ 469 static void do_pci_entry(struct module *mod, void *symval) 470 { 471 char alias[256]; 472 /* Class field can be divided into these three. */ 473 unsigned char baseclass, subclass, interface, 474 baseclass_mask, subclass_mask, interface_mask; 475 476 DEF_FIELD(symval, pci_device_id, vendor); 477 DEF_FIELD(symval, pci_device_id, device); 478 DEF_FIELD(symval, pci_device_id, subvendor); 479 DEF_FIELD(symval, pci_device_id, subdevice); 480 DEF_FIELD(symval, pci_device_id, class); 481 DEF_FIELD(symval, pci_device_id, class_mask); 482 DEF_FIELD(symval, pci_device_id, override_only); 483 484 switch (override_only) { 485 case 0: 486 strcpy(alias, "pci:"); 487 break; 488 case PCI_ID_F_VFIO_DRIVER_OVERRIDE: 489 strcpy(alias, "vfio_pci:"); 490 break; 491 default: 492 warn("Unknown PCI driver_override alias %08X\n", 493 override_only); 494 } 495 496 ADD(alias, "v", vendor != PCI_ANY_ID, vendor); 497 ADD(alias, "d", device != PCI_ANY_ID, device); 498 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor); 499 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice); 500 501 baseclass = (class) >> 16; 502 baseclass_mask = (class_mask) >> 16; 503 subclass = (class) >> 8; 504 subclass_mask = (class_mask) >> 8; 505 interface = class; 506 interface_mask = class_mask; 507 508 if ((baseclass_mask != 0 && baseclass_mask != 0xFF) 509 || (subclass_mask != 0 && subclass_mask != 0xFF) 510 || (interface_mask != 0 && interface_mask != 0xFF)) { 511 warn("Can't handle masks in %s:%04X\n", 512 mod->name, class_mask); 513 return; 514 } 515 516 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass); 517 ADD(alias, "sc", subclass_mask == 0xFF, subclass); 518 ADD(alias, "i", interface_mask == 0xFF, interface); 519 520 module_alias_printf(mod, true, "%s", alias); 521 } 522 523 /* looks like: "ccw:tNmNdtNdmN" */ 524 static void do_ccw_entry(struct module *mod, void *symval) 525 { 526 char alias[256] = {}; 527 528 DEF_FIELD(symval, ccw_device_id, match_flags); 529 DEF_FIELD(symval, ccw_device_id, cu_type); 530 DEF_FIELD(symval, ccw_device_id, cu_model); 531 DEF_FIELD(symval, ccw_device_id, dev_type); 532 DEF_FIELD(symval, ccw_device_id, dev_model); 533 534 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE, 535 cu_type); 536 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL, 537 cu_model); 538 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE, 539 dev_type); 540 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL, 541 dev_model); 542 543 module_alias_printf(mod, true, "ccw:%s", alias); 544 } 545 546 /* looks like: "ap:tN" */ 547 static void do_ap_entry(struct module *mod, void *symval) 548 { 549 DEF_FIELD(symval, ap_device_id, dev_type); 550 551 module_alias_printf(mod, false, "ap:t%02X*", dev_type); 552 } 553 554 /* looks like: "css:tN" */ 555 static void do_css_entry(struct module *mod, void *symval) 556 { 557 DEF_FIELD(symval, css_device_id, type); 558 559 module_alias_printf(mod, false, "css:t%01X", type); 560 } 561 562 /* Looks like: "serio:tyNprNidNexN" */ 563 static void do_serio_entry(struct module *mod, void *symval) 564 { 565 char alias[256] = {}; 566 567 DEF_FIELD(symval, serio_device_id, type); 568 DEF_FIELD(symval, serio_device_id, proto); 569 DEF_FIELD(symval, serio_device_id, id); 570 DEF_FIELD(symval, serio_device_id, extra); 571 572 ADD(alias, "ty", type != SERIO_ANY, type); 573 ADD(alias, "pr", proto != SERIO_ANY, proto); 574 ADD(alias, "id", id != SERIO_ANY, id); 575 ADD(alias, "ex", extra != SERIO_ANY, extra); 576 577 module_alias_printf(mod, true, "serio:%s", alias); 578 } 579 580 /* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or 581 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if) 582 * 583 * NOTE: Each driver should use one of the following : _HID, _CIDs 584 * or _CLS. Also, bb, ss, and pp can be substituted with ?? 585 * as don't care byte. 586 */ 587 static void do_acpi_entry(struct module *mod, void *symval) 588 { 589 DEF_FIELD_ADDR(symval, acpi_device_id, id); 590 DEF_FIELD(symval, acpi_device_id, cls); 591 DEF_FIELD(symval, acpi_device_id, cls_msk); 592 593 if ((*id)[0]) 594 module_alias_printf(mod, false, "acpi*:%s:*", *id); 595 else { 596 char alias[256]; 597 int i, byte_shift, cnt = 0; 598 unsigned int msk; 599 600 for (i = 1; i <= 3; i++) { 601 byte_shift = 8 * (3-i); 602 msk = (cls_msk >> byte_shift) & 0xFF; 603 if (msk) 604 sprintf(&alias[cnt], "%02x", 605 (cls >> byte_shift) & 0xFF); 606 else 607 sprintf(&alias[cnt], "??"); 608 cnt += 2; 609 } 610 module_alias_printf(mod, false, "acpi*:%s:*", alias); 611 } 612 } 613 614 /* looks like: "pnp:dD" */ 615 static void do_pnp_device_entry(struct module *mod, void *symval) 616 { 617 DEF_FIELD_ADDR(symval, pnp_device_id, id); 618 char acpi_id[sizeof(*id)]; 619 620 /* fix broken pnp bus lowercasing */ 621 for (unsigned int i = 0; i < sizeof(acpi_id); i++) 622 acpi_id[i] = toupper((*id)[i]); 623 module_alias_printf(mod, false, "pnp:d%s*", *id); 624 module_alias_printf(mod, false, "acpi*:%s:*", acpi_id); 625 } 626 627 /* looks like: "pnp:dD" for every device of the card */ 628 static void do_pnp_card_entry(struct module *mod, void *symval) 629 { 630 DEF_FIELD_ADDR(symval, pnp_card_device_id, devs); 631 632 for (unsigned int i = 0; i < PNP_MAX_DEVICES; i++) { 633 const char *id = (char *)(*devs)[i].id; 634 char acpi_id[PNP_ID_LEN]; 635 636 if (!id[0]) 637 break; 638 639 /* fix broken pnp bus lowercasing */ 640 for (unsigned int j = 0; j < sizeof(acpi_id); j++) 641 acpi_id[j] = toupper(id[j]); 642 643 /* add an individual alias for every device entry */ 644 module_alias_printf(mod, false, "pnp:d%s*", id); 645 module_alias_printf(mod, false, "acpi*:%s:*", acpi_id); 646 } 647 } 648 649 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */ 650 static void do_pcmcia_entry(struct module *mod, void *symval) 651 { 652 char alias[256] = {}; 653 unsigned int i; 654 DEF_FIELD(symval, pcmcia_device_id, match_flags); 655 DEF_FIELD(symval, pcmcia_device_id, manf_id); 656 DEF_FIELD(symval, pcmcia_device_id, card_id); 657 DEF_FIELD(symval, pcmcia_device_id, func_id); 658 DEF_FIELD(symval, pcmcia_device_id, function); 659 DEF_FIELD(symval, pcmcia_device_id, device_no); 660 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash); 661 662 for (i=0; i<4; i++) { 663 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]); 664 } 665 666 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID, 667 manf_id); 668 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID, 669 card_id); 670 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID, 671 func_id); 672 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION, 673 function); 674 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO, 675 device_no); 676 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]); 677 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]); 678 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]); 679 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]); 680 681 module_alias_printf(mod, true, "pcmcia:%s", alias); 682 } 683 684 static void do_vio_entry(struct module *mod, void *symval) 685 { 686 char alias[256]; 687 char *tmp; 688 DEF_FIELD_ADDR(symval, vio_device_id, type); 689 DEF_FIELD_ADDR(symval, vio_device_id, compat); 690 691 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*", 692 (*compat)[0] ? *compat : "*"); 693 694 /* Replace all whitespace with underscores */ 695 for (tmp = alias; tmp && *tmp; tmp++) 696 if (isspace (*tmp)) 697 *tmp = '_'; 698 699 module_alias_printf(mod, true, "%s", alias); 700 } 701 702 static void do_input(char *alias, 703 kernel_ulong_t *arr, unsigned int min, unsigned int max) 704 { 705 unsigned int i; 706 707 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++) 708 arr[i] = TO_NATIVE(arr[i]); 709 for (i = min; i < max; i++) 710 if (arr[i / BITS_PER_LONG] & (1ULL << (i%BITS_PER_LONG))) 711 sprintf(alias + strlen(alias), "%X,*", i); 712 } 713 714 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */ 715 static void do_input_entry(struct module *mod, void *symval) 716 { 717 char alias[256] = {}; 718 719 DEF_FIELD(symval, input_device_id, flags); 720 DEF_FIELD(symval, input_device_id, bustype); 721 DEF_FIELD(symval, input_device_id, vendor); 722 DEF_FIELD(symval, input_device_id, product); 723 DEF_FIELD(symval, input_device_id, version); 724 DEF_FIELD_ADDR(symval, input_device_id, evbit); 725 DEF_FIELD_ADDR(symval, input_device_id, keybit); 726 DEF_FIELD_ADDR(symval, input_device_id, relbit); 727 DEF_FIELD_ADDR(symval, input_device_id, absbit); 728 DEF_FIELD_ADDR(symval, input_device_id, mscbit); 729 DEF_FIELD_ADDR(symval, input_device_id, ledbit); 730 DEF_FIELD_ADDR(symval, input_device_id, sndbit); 731 DEF_FIELD_ADDR(symval, input_device_id, ffbit); 732 DEF_FIELD_ADDR(symval, input_device_id, swbit); 733 734 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype); 735 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor); 736 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product); 737 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version); 738 739 sprintf(alias + strlen(alias), "-e*"); 740 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT) 741 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX); 742 sprintf(alias + strlen(alias), "k*"); 743 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT) 744 do_input(alias, *keybit, 745 INPUT_DEVICE_ID_KEY_MIN_INTERESTING, 746 INPUT_DEVICE_ID_KEY_MAX); 747 sprintf(alias + strlen(alias), "r*"); 748 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT) 749 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX); 750 sprintf(alias + strlen(alias), "a*"); 751 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT) 752 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX); 753 sprintf(alias + strlen(alias), "m*"); 754 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT) 755 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX); 756 sprintf(alias + strlen(alias), "l*"); 757 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT) 758 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX); 759 sprintf(alias + strlen(alias), "s*"); 760 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT) 761 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX); 762 sprintf(alias + strlen(alias), "f*"); 763 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT) 764 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX); 765 sprintf(alias + strlen(alias), "w*"); 766 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT) 767 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX); 768 769 module_alias_printf(mod, false, "input:%s", alias); 770 } 771 772 static void do_eisa_entry(struct module *mod, void *symval) 773 { 774 DEF_FIELD_ADDR(symval, eisa_device_id, sig); 775 module_alias_printf(mod, false, EISA_DEVICE_MODALIAS_FMT "*", *sig); 776 } 777 778 /* Looks like: parisc:tNhvNrevNsvN */ 779 static void do_parisc_entry(struct module *mod, void *symval) 780 { 781 char alias[256] = {}; 782 783 DEF_FIELD(symval, parisc_device_id, hw_type); 784 DEF_FIELD(symval, parisc_device_id, hversion); 785 DEF_FIELD(symval, parisc_device_id, hversion_rev); 786 DEF_FIELD(symval, parisc_device_id, sversion); 787 788 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type); 789 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion); 790 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev); 791 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion); 792 793 module_alias_printf(mod, true, "parisc:%s", alias); 794 } 795 796 /* Looks like: sdio:cNvNdN. */ 797 static void do_sdio_entry(struct module *mod, void *symval) 798 { 799 char alias[256] = {}; 800 801 DEF_FIELD(symval, sdio_device_id, class); 802 DEF_FIELD(symval, sdio_device_id, vendor); 803 DEF_FIELD(symval, sdio_device_id, device); 804 805 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class); 806 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor); 807 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device); 808 809 module_alias_printf(mod, true, "sdio:%s", alias); 810 } 811 812 /* Looks like: ssb:vNidNrevN. */ 813 static void do_ssb_entry(struct module *mod, void *symval) 814 { 815 char alias[256] = {}; 816 817 DEF_FIELD(symval, ssb_device_id, vendor); 818 DEF_FIELD(symval, ssb_device_id, coreid); 819 DEF_FIELD(symval, ssb_device_id, revision); 820 821 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor); 822 ADD(alias, "id", coreid != SSB_ANY_ID, coreid); 823 ADD(alias, "rev", revision != SSB_ANY_REV, revision); 824 825 module_alias_printf(mod, true, "ssb:%s", alias); 826 } 827 828 /* Looks like: bcma:mNidNrevNclN. */ 829 static void do_bcma_entry(struct module *mod, void *symval) 830 { 831 char alias[256] = {}; 832 833 DEF_FIELD(symval, bcma_device_id, manuf); 834 DEF_FIELD(symval, bcma_device_id, id); 835 DEF_FIELD(symval, bcma_device_id, rev); 836 DEF_FIELD(symval, bcma_device_id, class); 837 838 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf); 839 ADD(alias, "id", id != BCMA_ANY_ID, id); 840 ADD(alias, "rev", rev != BCMA_ANY_REV, rev); 841 ADD(alias, "cl", class != BCMA_ANY_CLASS, class); 842 843 module_alias_printf(mod, true, "bcma:%s", alias); 844 } 845 846 /* Looks like: virtio:dNvN */ 847 static void do_virtio_entry(struct module *mod, void *symval) 848 { 849 char alias[256] = {}; 850 851 DEF_FIELD(symval, virtio_device_id, device); 852 DEF_FIELD(symval, virtio_device_id, vendor); 853 854 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device); 855 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor); 856 857 module_alias_printf(mod, true, "virtio:%s", alias); 858 } 859 860 /* 861 * Looks like: vmbus:guid 862 * Each byte of the guid will be represented by two hex characters 863 * in the name. 864 */ 865 866 static void do_vmbus_entry(struct module *mod, void *symval) 867 { 868 int i; 869 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid); 870 char guid_name[(sizeof(*guid) + 1) * 2]; 871 872 for (i = 0; i < (sizeof(*guid) * 2); i += 2) 873 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2])); 874 875 module_alias_printf(mod, false, "vmbus:%s", guid_name); 876 } 877 878 /* Looks like: rpmsg:S */ 879 static void do_rpmsg_entry(struct module *mod, void *symval) 880 { 881 DEF_FIELD_ADDR(symval, rpmsg_device_id, name); 882 883 module_alias_printf(mod, false, RPMSG_DEVICE_MODALIAS_FMT, *name); 884 } 885 886 /* Looks like: i2c:S */ 887 static void do_i2c_entry(struct module *mod, void *symval) 888 { 889 DEF_FIELD_ADDR(symval, i2c_device_id, name); 890 891 module_alias_printf(mod, false, I2C_MODULE_PREFIX "%s", *name); 892 } 893 894 static void do_i3c_entry(struct module *mod, void *symval) 895 { 896 char alias[256] = {}; 897 898 DEF_FIELD(symval, i3c_device_id, match_flags); 899 DEF_FIELD(symval, i3c_device_id, dcr); 900 DEF_FIELD(symval, i3c_device_id, manuf_id); 901 DEF_FIELD(symval, i3c_device_id, part_id); 902 DEF_FIELD(symval, i3c_device_id, extra_info); 903 904 ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr); 905 ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id); 906 ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id); 907 ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info); 908 909 module_alias_printf(mod, false, "i3c:%s", alias); 910 } 911 912 static void do_slim_entry(struct module *mod, void *symval) 913 { 914 DEF_FIELD(symval, slim_device_id, manf_id); 915 DEF_FIELD(symval, slim_device_id, prod_code); 916 917 module_alias_printf(mod, false, "slim:%x:%x:*", manf_id, prod_code); 918 } 919 920 /* Looks like: spi:S */ 921 static void do_spi_entry(struct module *mod, void *symval) 922 { 923 DEF_FIELD_ADDR(symval, spi_device_id, name); 924 925 module_alias_printf(mod, false, SPI_MODULE_PREFIX "%s", *name); 926 } 927 928 static const struct dmifield { 929 const char *prefix; 930 int field; 931 } dmi_fields[] = { 932 { "bvn", DMI_BIOS_VENDOR }, 933 { "bvr", DMI_BIOS_VERSION }, 934 { "bd", DMI_BIOS_DATE }, 935 { "br", DMI_BIOS_RELEASE }, 936 { "efr", DMI_EC_FIRMWARE_RELEASE }, 937 { "svn", DMI_SYS_VENDOR }, 938 { "pn", DMI_PRODUCT_NAME }, 939 { "pvr", DMI_PRODUCT_VERSION }, 940 { "rvn", DMI_BOARD_VENDOR }, 941 { "rn", DMI_BOARD_NAME }, 942 { "rvr", DMI_BOARD_VERSION }, 943 { "cvn", DMI_CHASSIS_VENDOR }, 944 { "ct", DMI_CHASSIS_TYPE }, 945 { "cvr", DMI_CHASSIS_VERSION }, 946 { NULL, DMI_NONE } 947 }; 948 949 static void dmi_ascii_filter(char *d, const char *s) 950 { 951 /* Filter out characters we don't want to see in the modalias string */ 952 for (; *s; s++) 953 if (*s > ' ' && *s < 127 && *s != ':') 954 *(d++) = *s; 955 956 *d = 0; 957 } 958 959 960 static void do_dmi_entry(struct module *mod, void *symval) 961 { 962 char alias[256] = {}; 963 int i, j; 964 DEF_FIELD_ADDR(symval, dmi_system_id, matches); 965 966 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) { 967 for (j = 0; j < 4; j++) { 968 if ((*matches)[j].slot && 969 (*matches)[j].slot == dmi_fields[i].field) { 970 sprintf(alias + strlen(alias), ":%s*", 971 dmi_fields[i].prefix); 972 dmi_ascii_filter(alias + strlen(alias), 973 (*matches)[j].substr); 974 strcat(alias, "*"); 975 } 976 } 977 } 978 979 module_alias_printf(mod, false, "dmi*%s:", alias); 980 } 981 982 static void do_platform_entry(struct module *mod, void *symval) 983 { 984 DEF_FIELD_ADDR(symval, platform_device_id, name); 985 986 module_alias_printf(mod, false, PLATFORM_MODULE_PREFIX "%s", *name); 987 } 988 989 static void do_mdio_entry(struct module *mod, void *symval) 990 { 991 char id[33]; 992 int i; 993 DEF_FIELD(symval, mdio_device_id, phy_id); 994 DEF_FIELD(symval, mdio_device_id, phy_id_mask); 995 996 for (i = 0; i < 32; i++) { 997 if (!((phy_id_mask >> (31-i)) & 1)) 998 id[i] = '?'; 999 else if ((phy_id >> (31-i)) & 1) 1000 id[i] = '1'; 1001 else 1002 id[i] = '0'; 1003 } 1004 1005 /* Terminate the string */ 1006 id[32] = '\0'; 1007 1008 module_alias_printf(mod, false, MDIO_MODULE_PREFIX "%s", id); 1009 } 1010 1011 /* Looks like: zorro:iN. */ 1012 static void do_zorro_entry(struct module *mod, void *symval) 1013 { 1014 char alias[256] = {}; 1015 DEF_FIELD(symval, zorro_device_id, id); 1016 1017 ADD(alias, "i", id != ZORRO_WILDCARD, id); 1018 1019 module_alias_printf(mod, false, "zorro:%s", alias); 1020 } 1021 1022 /* looks like: "pnp:dD" */ 1023 static void do_isapnp_entry(struct module *mod, void *symval) 1024 { 1025 DEF_FIELD(symval, isapnp_device_id, vendor); 1026 DEF_FIELD(symval, isapnp_device_id, function); 1027 module_alias_printf(mod, false, "pnp:d%c%c%c%x%x%x%x*", 1028 'A' + ((vendor >> 2) & 0x3f) - 1, 1029 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1, 1030 'A' + ((vendor >> 8) & 0x1f) - 1, 1031 (function >> 4) & 0x0f, function & 0x0f, 1032 (function >> 12) & 0x0f, (function >> 8) & 0x0f); 1033 } 1034 1035 /* Looks like: "ipack:fNvNdN". */ 1036 static void do_ipack_entry(struct module *mod, void *symval) 1037 { 1038 char alias[256] = {}; 1039 DEF_FIELD(symval, ipack_device_id, format); 1040 DEF_FIELD(symval, ipack_device_id, vendor); 1041 DEF_FIELD(symval, ipack_device_id, device); 1042 1043 ADD(alias, "f", format != IPACK_ANY_FORMAT, format); 1044 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor); 1045 ADD(alias, "d", device != IPACK_ANY_ID, device); 1046 1047 module_alias_printf(mod, true, "ipack:%s", alias); 1048 } 1049 1050 /* 1051 * Append a match expression for a single masked hex digit. 1052 * outp points to a pointer to the character at which to append. 1053 * *outp is updated on return to point just after the appended text, 1054 * to facilitate further appending. 1055 */ 1056 static void append_nibble_mask(char **outp, 1057 unsigned int nibble, unsigned int mask) 1058 { 1059 char *p = *outp; 1060 unsigned int i; 1061 1062 switch (mask) { 1063 case 0: 1064 *p++ = '?'; 1065 break; 1066 1067 case 0xf: 1068 p += sprintf(p, "%X", nibble); 1069 break; 1070 1071 default: 1072 /* 1073 * Dumbly emit a match pattern for all possible matching 1074 * digits. This could be improved in some cases using ranges, 1075 * but it has the advantage of being trivially correct, and is 1076 * often optimal. 1077 */ 1078 *p++ = '['; 1079 for (i = 0; i < 0x10; i++) 1080 if ((i & mask) == nibble) 1081 p += sprintf(p, "%X", i); 1082 *p++ = ']'; 1083 } 1084 1085 /* Ensure that the string remains NUL-terminated: */ 1086 *p = '\0'; 1087 1088 /* Advance the caller's end-of-string pointer: */ 1089 *outp = p; 1090 } 1091 1092 /* 1093 * looks like: "amba:dN" 1094 * 1095 * N is exactly 8 digits, where each is an upper-case hex digit, or 1096 * a ? or [] pattern matching exactly one digit. 1097 */ 1098 static void do_amba_entry(struct module *mod, void *symval) 1099 { 1100 char alias[256]; 1101 unsigned int digit; 1102 char *p = alias; 1103 DEF_FIELD(symval, amba_id, id); 1104 DEF_FIELD(symval, amba_id, mask); 1105 1106 if ((id & mask) != id) 1107 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: id=0x%08X, mask=0x%08X. Please fix this driver.\n", 1108 mod->name, id, mask); 1109 1110 for (digit = 0; digit < 8; digit++) 1111 append_nibble_mask(&p, 1112 (id >> (4 * (7 - digit))) & 0xf, 1113 (mask >> (4 * (7 - digit))) & 0xf); 1114 1115 module_alias_printf(mod, false, "amba:d%s", alias); 1116 } 1117 1118 /* 1119 * looks like: "mipscdmm:tN" 1120 * 1121 * N is exactly 2 digits, where each is an upper-case hex digit, or 1122 * a ? or [] pattern matching exactly one digit. 1123 */ 1124 static void do_mips_cdmm_entry(struct module *mod, void *symval) 1125 { 1126 DEF_FIELD(symval, mips_cdmm_device_id, type); 1127 1128 module_alias_printf(mod, false, "mipscdmm:t%02X*", type); 1129 } 1130 1131 /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,* 1132 * All fields are numbers. It would be nicer to use strings for vendor 1133 * and feature, but getting those out of the build system here is too 1134 * complicated. 1135 */ 1136 1137 static void do_x86cpu_entry(struct module *mod, void *symval) 1138 { 1139 char alias[256] = {}; 1140 1141 DEF_FIELD(symval, x86_cpu_id, feature); 1142 DEF_FIELD(symval, x86_cpu_id, family); 1143 DEF_FIELD(symval, x86_cpu_id, model); 1144 DEF_FIELD(symval, x86_cpu_id, vendor); 1145 1146 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor); 1147 ADD(alias, "fam", family != X86_FAMILY_ANY, family); 1148 ADD(alias, "mod", model != X86_MODEL_ANY, model); 1149 strcat(alias, ":feature:*"); 1150 if (feature != X86_FEATURE_ANY) 1151 sprintf(alias + strlen(alias), "%04X*", feature); 1152 1153 module_alias_printf(mod, false, "cpu:type:x86,%s", alias); 1154 } 1155 1156 /* LOOKS like cpu:type:*:feature:*FEAT* */ 1157 static void do_cpu_entry(struct module *mod, void *symval) 1158 { 1159 DEF_FIELD(symval, cpu_feature, feature); 1160 1161 module_alias_printf(mod, false, "cpu:type:*:feature:*%04X*", feature); 1162 } 1163 1164 /* Looks like: mei:S:uuid:N:* */ 1165 static void do_mei_entry(struct module *mod, void *symval) 1166 { 1167 char alias[256] = {}; 1168 1169 DEF_FIELD_ADDR(symval, mei_cl_device_id, name); 1170 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid); 1171 DEF_FIELD(symval, mei_cl_device_id, version); 1172 1173 add_uuid(alias, *uuid); 1174 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version); 1175 1176 module_alias_printf(mod, false, MEI_CL_MODULE_PREFIX "%s:%s:*", 1177 (*name)[0] ? *name : "*", alias); 1178 } 1179 1180 /* Looks like: rapidio:vNdNavNadN */ 1181 static void do_rio_entry(struct module *mod, void *symval) 1182 { 1183 char alias[256] = {}; 1184 1185 DEF_FIELD(symval, rio_device_id, did); 1186 DEF_FIELD(symval, rio_device_id, vid); 1187 DEF_FIELD(symval, rio_device_id, asm_did); 1188 DEF_FIELD(symval, rio_device_id, asm_vid); 1189 1190 ADD(alias, "v", vid != RIO_ANY_ID, vid); 1191 ADD(alias, "d", did != RIO_ANY_ID, did); 1192 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid); 1193 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did); 1194 1195 module_alias_printf(mod, true, "rapidio:%s", alias); 1196 } 1197 1198 /* Looks like: ulpi:vNpN */ 1199 static void do_ulpi_entry(struct module *mod, void *symval) 1200 { 1201 DEF_FIELD(symval, ulpi_device_id, vendor); 1202 DEF_FIELD(symval, ulpi_device_id, product); 1203 1204 module_alias_printf(mod, false, "ulpi:v%04xp%04x", vendor, product); 1205 } 1206 1207 /* Looks like: hdaudio:vNrNaN */ 1208 static void do_hda_entry(struct module *mod, void *symval) 1209 { 1210 char alias[256] = {}; 1211 1212 DEF_FIELD(symval, hda_device_id, vendor_id); 1213 DEF_FIELD(symval, hda_device_id, rev_id); 1214 DEF_FIELD(symval, hda_device_id, api_version); 1215 1216 ADD(alias, "v", vendor_id != 0, vendor_id); 1217 ADD(alias, "r", rev_id != 0, rev_id); 1218 ADD(alias, "a", api_version != 0, api_version); 1219 1220 module_alias_printf(mod, true, "hdaudio:%s", alias); 1221 } 1222 1223 /* Looks like: sdw:mNpNvNcN */ 1224 static void do_sdw_entry(struct module *mod, void *symval) 1225 { 1226 char alias[256] = {}; 1227 1228 DEF_FIELD(symval, sdw_device_id, mfg_id); 1229 DEF_FIELD(symval, sdw_device_id, part_id); 1230 DEF_FIELD(symval, sdw_device_id, sdw_version); 1231 DEF_FIELD(symval, sdw_device_id, class_id); 1232 1233 ADD(alias, "m", mfg_id != 0, mfg_id); 1234 ADD(alias, "p", part_id != 0, part_id); 1235 ADD(alias, "v", sdw_version != 0, sdw_version); 1236 ADD(alias, "c", class_id != 0, class_id); 1237 1238 module_alias_printf(mod, true, "sdw:%s", alias); 1239 } 1240 1241 /* Looks like: fsl-mc:vNdN */ 1242 static void do_fsl_mc_entry(struct module *mod, void *symval) 1243 { 1244 DEF_FIELD(symval, fsl_mc_device_id, vendor); 1245 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type); 1246 1247 module_alias_printf(mod, false, "fsl-mc:v%08Xd%s", vendor, *obj_type); 1248 } 1249 1250 /* Looks like: tbsvc:kSpNvNrN */ 1251 static void do_tbsvc_entry(struct module *mod, void *symval) 1252 { 1253 char alias[256] = {}; 1254 1255 DEF_FIELD(symval, tb_service_id, match_flags); 1256 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key); 1257 DEF_FIELD(symval, tb_service_id, protocol_id); 1258 DEF_FIELD(symval, tb_service_id, protocol_version); 1259 DEF_FIELD(symval, tb_service_id, protocol_revision); 1260 1261 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY) 1262 sprintf(alias + strlen(alias), "k%s", *protocol_key); 1263 else 1264 strcat(alias + strlen(alias), "k*"); 1265 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id); 1266 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION, 1267 protocol_version); 1268 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION, 1269 protocol_revision); 1270 1271 module_alias_printf(mod, true, "tbsvc:%s", alias); 1272 } 1273 1274 /* Looks like: typec:idNmN */ 1275 static void do_typec_entry(struct module *mod, void *symval) 1276 { 1277 char alias[256] = {}; 1278 1279 DEF_FIELD(symval, typec_device_id, svid); 1280 DEF_FIELD(symval, typec_device_id, mode); 1281 1282 ADD(alias, "m", mode != TYPEC_ANY_MODE, mode); 1283 1284 module_alias_printf(mod, false, "typec:id%04X%s", svid, alias); 1285 } 1286 1287 /* Looks like: tee:uuid */ 1288 static void do_tee_entry(struct module *mod, void *symval) 1289 { 1290 DEF_FIELD_ADDR(symval, tee_client_device_id, uuid); 1291 1292 module_alias_printf(mod, true, 1293 "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", 1294 uuid->b[0], uuid->b[1], uuid->b[2], uuid->b[3], uuid->b[4], 1295 uuid->b[5], uuid->b[6], uuid->b[7], uuid->b[8], uuid->b[9], 1296 uuid->b[10], uuid->b[11], uuid->b[12], uuid->b[13], uuid->b[14], 1297 uuid->b[15]); 1298 } 1299 1300 /* Looks like: wmi:guid */ 1301 static void do_wmi_entry(struct module *mod, void *symval) 1302 { 1303 DEF_FIELD_ADDR(symval, wmi_device_id, guid_string); 1304 1305 if (strlen(*guid_string) != UUID_STRING_LEN) { 1306 warn("Invalid WMI device id 'wmi:%s' in '%s'\n", 1307 *guid_string, mod->name); 1308 return; 1309 } 1310 1311 module_alias_printf(mod, false, WMI_MODULE_PREFIX "%s", *guid_string); 1312 } 1313 1314 /* Looks like: mhi:S */ 1315 static void do_mhi_entry(struct module *mod, void *symval) 1316 { 1317 DEF_FIELD_ADDR(symval, mhi_device_id, chan); 1318 module_alias_printf(mod, false, MHI_DEVICE_MODALIAS_FMT, *chan); 1319 } 1320 1321 /* Looks like: mhi_ep:S */ 1322 static void do_mhi_ep_entry(struct module *mod, void *symval) 1323 { 1324 DEF_FIELD_ADDR(symval, mhi_device_id, chan); 1325 1326 module_alias_printf(mod, false, MHI_EP_DEVICE_MODALIAS_FMT, *chan); 1327 } 1328 1329 /* Looks like: ishtp:{guid} */ 1330 static void do_ishtp_entry(struct module *mod, void *symval) 1331 { 1332 char alias[256] = {}; 1333 DEF_FIELD_ADDR(symval, ishtp_device_id, guid); 1334 1335 add_guid(alias, *guid); 1336 1337 module_alias_printf(mod, false, ISHTP_MODULE_PREFIX "{%s}", alias); 1338 } 1339 1340 static void do_auxiliary_entry(struct module *mod, void *symval) 1341 { 1342 DEF_FIELD_ADDR(symval, auxiliary_device_id, name); 1343 1344 module_alias_printf(mod, false, AUXILIARY_MODULE_PREFIX "%s", *name); 1345 } 1346 1347 /* 1348 * Looks like: ssam:dNcNtNiNfN 1349 * 1350 * N is exactly 2 digits, where each is an upper-case hex digit. 1351 */ 1352 static void do_ssam_entry(struct module *mod, void *symval) 1353 { 1354 char alias[256] = {}; 1355 1356 DEF_FIELD(symval, ssam_device_id, match_flags); 1357 DEF_FIELD(symval, ssam_device_id, domain); 1358 DEF_FIELD(symval, ssam_device_id, category); 1359 DEF_FIELD(symval, ssam_device_id, target); 1360 DEF_FIELD(symval, ssam_device_id, instance); 1361 DEF_FIELD(symval, ssam_device_id, function); 1362 1363 ADD(alias, "t", match_flags & SSAM_MATCH_TARGET, target); 1364 ADD(alias, "i", match_flags & SSAM_MATCH_INSTANCE, instance); 1365 ADD(alias, "f", match_flags & SSAM_MATCH_FUNCTION, function); 1366 1367 module_alias_printf(mod, false, "ssam:d%02Xc%02X%s", 1368 domain, category, alias); 1369 } 1370 1371 /* Looks like: dfl:tNfN */ 1372 static void do_dfl_entry(struct module *mod, void *symval) 1373 { 1374 DEF_FIELD(symval, dfl_device_id, type); 1375 DEF_FIELD(symval, dfl_device_id, feature_id); 1376 1377 module_alias_printf(mod, true, "dfl:t%04Xf%04X", type, feature_id); 1378 } 1379 1380 /* Looks like: cdx:vNdN */ 1381 static void do_cdx_entry(struct module *mod, void *symval) 1382 { 1383 char alias[256]; 1384 1385 DEF_FIELD(symval, cdx_device_id, vendor); 1386 DEF_FIELD(symval, cdx_device_id, device); 1387 DEF_FIELD(symval, cdx_device_id, subvendor); 1388 DEF_FIELD(symval, cdx_device_id, subdevice); 1389 DEF_FIELD(symval, cdx_device_id, class); 1390 DEF_FIELD(symval, cdx_device_id, class_mask); 1391 DEF_FIELD(symval, cdx_device_id, override_only); 1392 1393 switch (override_only) { 1394 case 0: 1395 strcpy(alias, "cdx:"); 1396 break; 1397 case CDX_ID_F_VFIO_DRIVER_OVERRIDE: 1398 strcpy(alias, "vfio_cdx:"); 1399 break; 1400 default: 1401 warn("Unknown CDX driver_override alias %08X\n", 1402 override_only); 1403 return; 1404 } 1405 1406 ADD(alias, "v", vendor != CDX_ANY_ID, vendor); 1407 ADD(alias, "d", device != CDX_ANY_ID, device); 1408 ADD(alias, "sv", subvendor != CDX_ANY_ID, subvendor); 1409 ADD(alias, "sd", subdevice != CDX_ANY_ID, subdevice); 1410 ADD(alias, "c", class_mask == 0xFFFFFF, class); 1411 1412 module_alias_printf(mod, false, "%s", alias); 1413 } 1414 1415 static void do_vchiq_entry(struct module *mod, void *symval) 1416 { 1417 DEF_FIELD_ADDR(symval, vchiq_device_id, name); 1418 1419 module_alias_printf(mod, false, "vchiq:%s", *name); 1420 } 1421 1422 /* Looks like: coreboot:tN */ 1423 static void do_coreboot_entry(struct module *mod, void *symval) 1424 { 1425 DEF_FIELD(symval, coreboot_device_id, tag); 1426 1427 module_alias_printf(mod, false, "coreboot:t%08X", tag); 1428 } 1429 1430 /* Does namelen bytes of name exactly match the symbol? */ 1431 static bool sym_is(const char *name, unsigned namelen, const char *symbol) 1432 { 1433 if (namelen != strlen(symbol)) 1434 return false; 1435 1436 return memcmp(name, symbol, namelen) == 0; 1437 } 1438 1439 static void do_table(void *symval, unsigned long size, 1440 unsigned long id_size, 1441 const char *device_id, 1442 void (*do_entry)(struct module *mod, void *symval), 1443 struct module *mod) 1444 { 1445 unsigned int i; 1446 1447 device_id_check(mod->name, device_id, size, id_size, symval); 1448 /* Leave last one: it's the terminator. */ 1449 size -= id_size; 1450 1451 for (i = 0; i < size; i += id_size) 1452 do_entry(mod, symval + i); 1453 } 1454 1455 static const struct devtable devtable[] = { 1456 {"hid", SIZE_hid_device_id, do_hid_entry}, 1457 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry}, 1458 {"pci", SIZE_pci_device_id, do_pci_entry}, 1459 {"ccw", SIZE_ccw_device_id, do_ccw_entry}, 1460 {"ap", SIZE_ap_device_id, do_ap_entry}, 1461 {"css", SIZE_css_device_id, do_css_entry}, 1462 {"serio", SIZE_serio_device_id, do_serio_entry}, 1463 {"acpi", SIZE_acpi_device_id, do_acpi_entry}, 1464 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry}, 1465 {"vio", SIZE_vio_device_id, do_vio_entry}, 1466 {"input", SIZE_input_device_id, do_input_entry}, 1467 {"eisa", SIZE_eisa_device_id, do_eisa_entry}, 1468 {"parisc", SIZE_parisc_device_id, do_parisc_entry}, 1469 {"sdio", SIZE_sdio_device_id, do_sdio_entry}, 1470 {"ssb", SIZE_ssb_device_id, do_ssb_entry}, 1471 {"bcma", SIZE_bcma_device_id, do_bcma_entry}, 1472 {"virtio", SIZE_virtio_device_id, do_virtio_entry}, 1473 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry}, 1474 {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry}, 1475 {"i2c", SIZE_i2c_device_id, do_i2c_entry}, 1476 {"i3c", SIZE_i3c_device_id, do_i3c_entry}, 1477 {"slim", SIZE_slim_device_id, do_slim_entry}, 1478 {"spi", SIZE_spi_device_id, do_spi_entry}, 1479 {"dmi", SIZE_dmi_system_id, do_dmi_entry}, 1480 {"platform", SIZE_platform_device_id, do_platform_entry}, 1481 {"mdio", SIZE_mdio_device_id, do_mdio_entry}, 1482 {"zorro", SIZE_zorro_device_id, do_zorro_entry}, 1483 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry}, 1484 {"ipack", SIZE_ipack_device_id, do_ipack_entry}, 1485 {"amba", SIZE_amba_id, do_amba_entry}, 1486 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry}, 1487 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry}, 1488 {"cpu", SIZE_cpu_feature, do_cpu_entry}, 1489 {"mei", SIZE_mei_cl_device_id, do_mei_entry}, 1490 {"rapidio", SIZE_rio_device_id, do_rio_entry}, 1491 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry}, 1492 {"hdaudio", SIZE_hda_device_id, do_hda_entry}, 1493 {"sdw", SIZE_sdw_device_id, do_sdw_entry}, 1494 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry}, 1495 {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry}, 1496 {"typec", SIZE_typec_device_id, do_typec_entry}, 1497 {"tee", SIZE_tee_client_device_id, do_tee_entry}, 1498 {"wmi", SIZE_wmi_device_id, do_wmi_entry}, 1499 {"mhi", SIZE_mhi_device_id, do_mhi_entry}, 1500 {"mhi_ep", SIZE_mhi_device_id, do_mhi_ep_entry}, 1501 {"auxiliary", SIZE_auxiliary_device_id, do_auxiliary_entry}, 1502 {"ssam", SIZE_ssam_device_id, do_ssam_entry}, 1503 {"dfl", SIZE_dfl_device_id, do_dfl_entry}, 1504 {"ishtp", SIZE_ishtp_device_id, do_ishtp_entry}, 1505 {"cdx", SIZE_cdx_device_id, do_cdx_entry}, 1506 {"vchiq", SIZE_vchiq_device_id, do_vchiq_entry}, 1507 {"coreboot", SIZE_coreboot_device_id, do_coreboot_entry}, 1508 {"of", SIZE_of_device_id, do_of_entry}, 1509 {"pnp", SIZE_pnp_device_id, do_pnp_device_entry}, 1510 {"pnp_card", SIZE_pnp_card_device_id, do_pnp_card_entry}, 1511 }; 1512 1513 /* Create MODULE_ALIAS() statements. 1514 * At this time, we cannot write the actual output C source yet, 1515 * so we write into the mod->dev_table_buf buffer. */ 1516 void handle_moddevtable(struct module *mod, struct elf_info *info, 1517 Elf_Sym *sym, const char *symname) 1518 { 1519 void *symval; 1520 char *zeros = NULL; 1521 const char *name, *identifier; 1522 unsigned int namelen; 1523 1524 /* We're looking for a section relative symbol */ 1525 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections) 1526 return; 1527 1528 /* We're looking for an object */ 1529 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT) 1530 return; 1531 1532 /* All our symbols are of form __mod_<name>__<identifier>_device_table. */ 1533 if (strncmp(symname, "__mod_", strlen("__mod_"))) 1534 return; 1535 name = symname + strlen("__mod_"); 1536 namelen = strlen(name); 1537 if (namelen < strlen("_device_table")) 1538 return; 1539 if (strcmp(name + namelen - strlen("_device_table"), "_device_table")) 1540 return; 1541 identifier = strstr(name, "__"); 1542 if (!identifier) 1543 return; 1544 namelen = identifier - name; 1545 1546 /* Handle all-NULL symbols allocated into .bss */ 1547 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) { 1548 zeros = calloc(1, sym->st_size); 1549 symval = zeros; 1550 } else { 1551 symval = sym_get_data(info, sym); 1552 } 1553 1554 /* First handle the "special" cases */ 1555 if (sym_is(name, namelen, "usb")) 1556 do_usb_table(symval, sym->st_size, mod); 1557 else { 1558 int i; 1559 1560 for (i = 0; i < ARRAY_SIZE(devtable); i++) { 1561 const struct devtable *p = &devtable[i]; 1562 1563 if (sym_is(name, namelen, p->device_id)) { 1564 do_table(symval, sym->st_size, p->id_size, 1565 p->device_id, p->do_entry, mod); 1566 break; 1567 } 1568 } 1569 } 1570 free(zeros); 1571 } 1572