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 int (*do_entry)(const char *filename, void *symval, char *alias); 130 }; 131 132 /* Size of alias provided to do_entry functions */ 133 #define ALIAS_SIZE 500 134 135 /* Define a variable f that holds the value of field f of struct devid 136 * based at address m. 137 */ 138 #define DEF_FIELD(m, devid, f) \ 139 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) 140 141 /* Define a variable v that holds the address of field f of struct devid 142 * based at address m. Due to the way typeof works, for a field of type 143 * T[N] the variable has type T(*)[N], _not_ T*. 144 */ 145 #define DEF_FIELD_ADDR_VAR(m, devid, f, v) \ 146 typeof(((struct devid *)0)->f) *v = ((m) + OFF_##devid##_##f) 147 148 /* Define a variable f that holds the address of field f of struct devid 149 * based at address m. Due to the way typeof works, for a field of type 150 * T[N] the variable has type T(*)[N], _not_ T*. 151 */ 152 #define DEF_FIELD_ADDR(m, devid, f) \ 153 DEF_FIELD_ADDR_VAR(m, devid, f, f) 154 155 #define ADD(str, sep, cond, field) \ 156 do { \ 157 strcat(str, sep); \ 158 if (cond) \ 159 sprintf(str + strlen(str), \ 160 sizeof(field) == 1 ? "%02X" : \ 161 sizeof(field) == 2 ? "%04X" : \ 162 sizeof(field) == 4 ? "%08X" : "", \ 163 field); \ 164 else \ 165 sprintf(str + strlen(str), "*"); \ 166 } while(0) 167 168 /* End in a wildcard, for future extension */ 169 static inline void add_wildcard(char *str) 170 { 171 int len = strlen(str); 172 173 if (str[len - 1] != '*') 174 strcat(str + len, "*"); 175 } 176 177 static inline void add_uuid(char *str, uuid_le uuid) 178 { 179 int len = strlen(str); 180 181 sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", 182 uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0], 183 uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6], 184 uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11], 185 uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]); 186 } 187 188 static inline void add_guid(char *str, guid_t guid) 189 { 190 int len = strlen(str); 191 192 sprintf(str + len, "%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X", 193 guid.b[3], guid.b[2], guid.b[1], guid.b[0], 194 guid.b[5], guid.b[4], guid.b[7], guid.b[6], 195 guid.b[8], guid.b[9], guid.b[10], guid.b[11], 196 guid.b[12], guid.b[13], guid.b[14], guid.b[15]); 197 } 198 199 /** 200 * Check that sizeof(device_id type) are consistent with size of section 201 * in .o file. If in-consistent then userspace and kernel does not agree 202 * on actual size which is a bug. 203 * Also verify that the final entry in the table is all zeros. 204 * Ignore both checks if build host differ from target host and size differs. 205 **/ 206 static void device_id_check(const char *modname, const char *device_id, 207 unsigned long size, unsigned long id_size, 208 void *symval) 209 { 210 int i; 211 212 if (size % id_size || size < id_size) { 213 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo of the size of section __mod_%s__<identifier>_device_table=%lu.\n" 214 "Fix definition of struct %s_device_id in mod_devicetable.h\n", 215 modname, device_id, id_size, device_id, size, device_id); 216 } 217 /* Verify last one is a terminator */ 218 for (i = 0; i < id_size; i++ ) { 219 if (*(uint8_t*)(symval+size-id_size+i)) { 220 fprintf(stderr, 221 "%s: struct %s_device_id is %lu bytes. The last of %lu is:\n", 222 modname, device_id, id_size, size / id_size); 223 for (i = 0; i < id_size; i++ ) 224 fprintf(stderr,"0x%02x ", 225 *(uint8_t*)(symval+size-id_size+i) ); 226 fprintf(stderr,"\n"); 227 fatal("%s: struct %s_device_id is not terminated with a NULL entry!\n", 228 modname, device_id); 229 } 230 } 231 } 232 233 /* USB is special because the bcdDevice can be matched against a numeric range */ 234 /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */ 235 static void do_usb_entry(void *symval, 236 unsigned int bcdDevice_initial, int bcdDevice_initial_digits, 237 unsigned char range_lo, unsigned char range_hi, 238 unsigned char max, struct module *mod) 239 { 240 char alias[500]; 241 DEF_FIELD(symval, usb_device_id, match_flags); 242 DEF_FIELD(symval, usb_device_id, idVendor); 243 DEF_FIELD(symval, usb_device_id, idProduct); 244 DEF_FIELD(symval, usb_device_id, bcdDevice_lo); 245 DEF_FIELD(symval, usb_device_id, bDeviceClass); 246 DEF_FIELD(symval, usb_device_id, bDeviceSubClass); 247 DEF_FIELD(symval, usb_device_id, bDeviceProtocol); 248 DEF_FIELD(symval, usb_device_id, bInterfaceClass); 249 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass); 250 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol); 251 DEF_FIELD(symval, usb_device_id, bInterfaceNumber); 252 253 strcpy(alias, "usb:"); 254 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR, 255 idVendor); 256 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT, 257 idProduct); 258 259 strcat(alias, "d"); 260 if (bcdDevice_initial_digits) 261 sprintf(alias + strlen(alias), "%0*X", 262 bcdDevice_initial_digits, bcdDevice_initial); 263 if (range_lo == range_hi) 264 sprintf(alias + strlen(alias), "%X", range_lo); 265 else if (range_lo > 0 || range_hi < max) { 266 if (range_lo > 0x9 || range_hi < 0xA) 267 sprintf(alias + strlen(alias), 268 "[%X-%X]", 269 range_lo, 270 range_hi); 271 else { 272 sprintf(alias + strlen(alias), 273 range_lo < 0x9 ? "[%X-9" : "[%X", 274 range_lo); 275 sprintf(alias + strlen(alias), 276 range_hi > 0xA ? "A-%X]" : "%X]", 277 range_hi); 278 } 279 } 280 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1)) 281 strcat(alias, "*"); 282 283 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS, 284 bDeviceClass); 285 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS, 286 bDeviceSubClass); 287 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL, 288 bDeviceProtocol); 289 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS, 290 bInterfaceClass); 291 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS, 292 bInterfaceSubClass); 293 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL, 294 bInterfaceProtocol); 295 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER, 296 bInterfaceNumber); 297 298 module_alias_printf(mod, true, "%s", alias); 299 } 300 301 /* Handles increment/decrement of BCD formatted integers */ 302 /* Returns the previous value, so it works like i++ or i-- */ 303 static unsigned int incbcd(unsigned int *bcd, 304 int inc, 305 unsigned char max, 306 size_t chars) 307 { 308 unsigned int init = *bcd, i, j; 309 unsigned long long c, dec = 0; 310 311 /* If bcd is not in BCD format, just increment */ 312 if (max > 0x9) { 313 *bcd += inc; 314 return init; 315 } 316 317 /* Convert BCD to Decimal */ 318 for (i=0 ; i < chars ; i++) { 319 c = (*bcd >> (i << 2)) & 0xf; 320 c = c > 9 ? 9 : c; /* force to bcd just in case */ 321 for (j=0 ; j < i ; j++) 322 c = c * 10; 323 dec += c; 324 } 325 326 /* Do our increment/decrement */ 327 dec += inc; 328 *bcd = 0; 329 330 /* Convert back to BCD */ 331 for (i=0 ; i < chars ; i++) { 332 for (c=1,j=0 ; j < i ; j++) 333 c = c * 10; 334 c = (dec / c) % 10; 335 *bcd += c << (i << 2); 336 } 337 return init; 338 } 339 340 static void do_usb_entry_multi(void *symval, struct module *mod) 341 { 342 unsigned int devlo, devhi; 343 unsigned char chi, clo, max; 344 int ndigits; 345 346 DEF_FIELD(symval, usb_device_id, match_flags); 347 DEF_FIELD(symval, usb_device_id, idVendor); 348 DEF_FIELD(symval, usb_device_id, idProduct); 349 DEF_FIELD(symval, usb_device_id, bcdDevice_lo); 350 DEF_FIELD(symval, usb_device_id, bcdDevice_hi); 351 DEF_FIELD(symval, usb_device_id, bDeviceClass); 352 DEF_FIELD(symval, usb_device_id, bInterfaceClass); 353 354 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ? 355 bcdDevice_lo : 0x0U; 356 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ? 357 bcdDevice_hi : ~0x0U; 358 359 /* Figure out if this entry is in bcd or hex format */ 360 max = 0x9; /* Default to decimal format */ 361 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) { 362 clo = (devlo >> (ndigits << 2)) & 0xf; 363 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf; 364 if (clo > max || chi > max) { 365 max = 0xf; 366 break; 367 } 368 } 369 370 /* 371 * Some modules (visor) have empty slots as placeholder for 372 * run-time specification that results in catch-all alias 373 */ 374 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass)) 375 return; 376 377 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */ 378 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) { 379 clo = devlo & 0xf; 380 chi = devhi & 0xf; 381 if (chi > max) /* If we are in bcd mode, truncate if necessary */ 382 chi = max; 383 devlo >>= 4; 384 devhi >>= 4; 385 386 if (devlo == devhi || !ndigits) { 387 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod); 388 break; 389 } 390 391 if (clo > 0x0) 392 do_usb_entry(symval, 393 incbcd(&devlo, 1, max, 394 sizeof(bcdDevice_lo) * 2), 395 ndigits, clo, max, max, mod); 396 397 if (chi < max) 398 do_usb_entry(symval, 399 incbcd(&devhi, -1, max, 400 sizeof(bcdDevice_lo) * 2), 401 ndigits, 0x0, chi, max, mod); 402 } 403 } 404 405 static void do_usb_table(void *symval, unsigned long size, 406 struct module *mod) 407 { 408 unsigned int i; 409 const unsigned long id_size = SIZE_usb_device_id; 410 411 device_id_check(mod->name, "usb", size, id_size, symval); 412 413 /* Leave last one: it's the terminator. */ 414 size -= id_size; 415 416 for (i = 0; i < size; i += id_size) 417 do_usb_entry_multi(symval + i, mod); 418 } 419 420 static void do_of_entry_multi(void *symval, struct module *mod) 421 { 422 char alias[500]; 423 int len; 424 char *tmp; 425 426 DEF_FIELD_ADDR(symval, of_device_id, name); 427 DEF_FIELD_ADDR(symval, of_device_id, type); 428 DEF_FIELD_ADDR(symval, of_device_id, compatible); 429 430 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*", 431 (*type)[0] ? *type : "*"); 432 433 if ((*compatible)[0]) 434 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "", 435 *compatible); 436 437 /* Replace all whitespace with underscores */ 438 for (tmp = alias; tmp && *tmp; tmp++) 439 if (isspace(*tmp)) 440 *tmp = '_'; 441 442 module_alias_printf(mod, false, "%s", alias); 443 module_alias_printf(mod, false, "%sC*", alias); 444 } 445 446 static void do_of_table(void *symval, unsigned long size, 447 struct module *mod) 448 { 449 unsigned int i; 450 const unsigned long id_size = SIZE_of_device_id; 451 452 device_id_check(mod->name, "of", size, id_size, symval); 453 454 /* Leave last one: it's the terminator. */ 455 size -= id_size; 456 457 for (i = 0; i < size; i += id_size) 458 do_of_entry_multi(symval + i, mod); 459 } 460 461 /* Looks like: hid:bNvNpN */ 462 static int do_hid_entry(const char *filename, 463 void *symval, char *alias) 464 { 465 DEF_FIELD(symval, hid_device_id, bus); 466 DEF_FIELD(symval, hid_device_id, group); 467 DEF_FIELD(symval, hid_device_id, vendor); 468 DEF_FIELD(symval, hid_device_id, product); 469 470 sprintf(alias, "hid:"); 471 ADD(alias, "b", bus != HID_BUS_ANY, bus); 472 ADD(alias, "g", group != HID_GROUP_ANY, group); 473 ADD(alias, "v", vendor != HID_ANY_ID, vendor); 474 ADD(alias, "p", product != HID_ANY_ID, product); 475 476 return 1; 477 } 478 479 /* Looks like: ieee1394:venNmoNspNverN */ 480 static int do_ieee1394_entry(const char *filename, 481 void *symval, char *alias) 482 { 483 DEF_FIELD(symval, ieee1394_device_id, match_flags); 484 DEF_FIELD(symval, ieee1394_device_id, vendor_id); 485 DEF_FIELD(symval, ieee1394_device_id, model_id); 486 DEF_FIELD(symval, ieee1394_device_id, specifier_id); 487 DEF_FIELD(symval, ieee1394_device_id, version); 488 489 strcpy(alias, "ieee1394:"); 490 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID, 491 vendor_id); 492 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID, 493 model_id); 494 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID, 495 specifier_id); 496 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION, 497 version); 498 499 add_wildcard(alias); 500 return 1; 501 } 502 503 /* Looks like: pci:vNdNsvNsdNbcNscNiN or <prefix>_pci:vNdNsvNsdNbcNscNiN. */ 504 static int do_pci_entry(const char *filename, 505 void *symval, char *alias) 506 { 507 /* Class field can be divided into these three. */ 508 unsigned char baseclass, subclass, interface, 509 baseclass_mask, subclass_mask, interface_mask; 510 511 DEF_FIELD(symval, pci_device_id, vendor); 512 DEF_FIELD(symval, pci_device_id, device); 513 DEF_FIELD(symval, pci_device_id, subvendor); 514 DEF_FIELD(symval, pci_device_id, subdevice); 515 DEF_FIELD(symval, pci_device_id, class); 516 DEF_FIELD(symval, pci_device_id, class_mask); 517 DEF_FIELD(symval, pci_device_id, override_only); 518 519 switch (override_only) { 520 case 0: 521 strcpy(alias, "pci:"); 522 break; 523 case PCI_ID_F_VFIO_DRIVER_OVERRIDE: 524 strcpy(alias, "vfio_pci:"); 525 break; 526 default: 527 warn("Unknown PCI driver_override alias %08X\n", 528 override_only); 529 return 0; 530 } 531 532 ADD(alias, "v", vendor != PCI_ANY_ID, vendor); 533 ADD(alias, "d", device != PCI_ANY_ID, device); 534 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor); 535 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice); 536 537 baseclass = (class) >> 16; 538 baseclass_mask = (class_mask) >> 16; 539 subclass = (class) >> 8; 540 subclass_mask = (class_mask) >> 8; 541 interface = class; 542 interface_mask = class_mask; 543 544 if ((baseclass_mask != 0 && baseclass_mask != 0xFF) 545 || (subclass_mask != 0 && subclass_mask != 0xFF) 546 || (interface_mask != 0 && interface_mask != 0xFF)) { 547 warn("Can't handle masks in %s:%04X\n", 548 filename, class_mask); 549 return 0; 550 } 551 552 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass); 553 ADD(alias, "sc", subclass_mask == 0xFF, subclass); 554 ADD(alias, "i", interface_mask == 0xFF, interface); 555 add_wildcard(alias); 556 return 1; 557 } 558 559 /* looks like: "ccw:tNmNdtNdmN" */ 560 static int do_ccw_entry(const char *filename, 561 void *symval, char *alias) 562 { 563 DEF_FIELD(symval, ccw_device_id, match_flags); 564 DEF_FIELD(symval, ccw_device_id, cu_type); 565 DEF_FIELD(symval, ccw_device_id, cu_model); 566 DEF_FIELD(symval, ccw_device_id, dev_type); 567 DEF_FIELD(symval, ccw_device_id, dev_model); 568 569 strcpy(alias, "ccw:"); 570 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE, 571 cu_type); 572 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL, 573 cu_model); 574 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE, 575 dev_type); 576 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL, 577 dev_model); 578 add_wildcard(alias); 579 return 1; 580 } 581 582 /* looks like: "ap:tN" */ 583 static int do_ap_entry(const char *filename, 584 void *symval, char *alias) 585 { 586 DEF_FIELD(symval, ap_device_id, dev_type); 587 588 sprintf(alias, "ap:t%02X*", dev_type); 589 return 1; 590 } 591 592 /* looks like: "css:tN" */ 593 static int do_css_entry(const char *filename, 594 void *symval, char *alias) 595 { 596 DEF_FIELD(symval, css_device_id, type); 597 598 sprintf(alias, "css:t%01X", type); 599 return 1; 600 } 601 602 /* Looks like: "serio:tyNprNidNexN" */ 603 static int do_serio_entry(const char *filename, 604 void *symval, char *alias) 605 { 606 DEF_FIELD(symval, serio_device_id, type); 607 DEF_FIELD(symval, serio_device_id, proto); 608 DEF_FIELD(symval, serio_device_id, id); 609 DEF_FIELD(symval, serio_device_id, extra); 610 611 strcpy(alias, "serio:"); 612 ADD(alias, "ty", type != SERIO_ANY, type); 613 ADD(alias, "pr", proto != SERIO_ANY, proto); 614 ADD(alias, "id", id != SERIO_ANY, id); 615 ADD(alias, "ex", extra != SERIO_ANY, extra); 616 617 add_wildcard(alias); 618 return 1; 619 } 620 621 /* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or 622 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if) 623 * 624 * NOTE: Each driver should use one of the following : _HID, _CIDs 625 * or _CLS. Also, bb, ss, and pp can be substituted with ?? 626 * as don't care byte. 627 */ 628 static int do_acpi_entry(const char *filename, 629 void *symval, char *alias) 630 { 631 DEF_FIELD_ADDR(symval, acpi_device_id, id); 632 DEF_FIELD(symval, acpi_device_id, cls); 633 DEF_FIELD(symval, acpi_device_id, cls_msk); 634 635 if ((*id)[0]) 636 sprintf(alias, "acpi*:%s:*", *id); 637 else { 638 int i, byte_shift, cnt = 0; 639 unsigned int msk; 640 641 sprintf(&alias[cnt], "acpi*:"); 642 cnt = 6; 643 for (i = 1; i <= 3; i++) { 644 byte_shift = 8 * (3-i); 645 msk = (cls_msk >> byte_shift) & 0xFF; 646 if (msk) 647 sprintf(&alias[cnt], "%02x", 648 (cls >> byte_shift) & 0xFF); 649 else 650 sprintf(&alias[cnt], "??"); 651 cnt += 2; 652 } 653 sprintf(&alias[cnt], ":*"); 654 } 655 return 1; 656 } 657 658 /* looks like: "pnp:dD" */ 659 static void do_pnp_device_entry(void *symval, unsigned long size, 660 struct module *mod) 661 { 662 const unsigned long id_size = SIZE_pnp_device_id; 663 const unsigned int count = (size / id_size)-1; 664 unsigned int i; 665 666 device_id_check(mod->name, "pnp", size, id_size, symval); 667 668 for (i = 0; i < count; i++) { 669 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id); 670 char acpi_id[sizeof(*id)]; 671 int j; 672 673 module_alias_printf(mod, false, "pnp:d%s*", *id); 674 675 /* fix broken pnp bus lowercasing */ 676 for (j = 0; j < sizeof(acpi_id); j++) 677 acpi_id[j] = toupper((*id)[j]); 678 module_alias_printf(mod, false, "acpi*:%s:*", acpi_id); 679 } 680 } 681 682 /* looks like: "pnp:dD" for every device of the card */ 683 static void do_pnp_card_entries(void *symval, unsigned long size, 684 struct module *mod) 685 { 686 const unsigned long id_size = SIZE_pnp_card_device_id; 687 const unsigned int count = (size / id_size)-1; 688 unsigned int i; 689 690 device_id_check(mod->name, "pnp", size, id_size, symval); 691 692 for (i = 0; i < count; i++) { 693 unsigned int j; 694 DEF_FIELD_ADDR(symval + i * id_size, pnp_card_device_id, devs); 695 696 for (j = 0; j < PNP_MAX_DEVICES; j++) { 697 const char *id = (char *)(*devs)[j].id; 698 char acpi_id[PNP_ID_LEN]; 699 700 if (!id[0]) 701 break; 702 703 /* add an individual alias for every device entry */ 704 module_alias_printf(mod, false, "pnp:d%s*", id); 705 706 /* fix broken pnp bus lowercasing */ 707 for (int k = 0; k < sizeof(acpi_id); k++) 708 acpi_id[k] = toupper(id[k]); 709 module_alias_printf(mod, false, "acpi*:%s:*", acpi_id); 710 } 711 } 712 } 713 714 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */ 715 static int do_pcmcia_entry(const char *filename, 716 void *symval, char *alias) 717 { 718 unsigned int i; 719 DEF_FIELD(symval, pcmcia_device_id, match_flags); 720 DEF_FIELD(symval, pcmcia_device_id, manf_id); 721 DEF_FIELD(symval, pcmcia_device_id, card_id); 722 DEF_FIELD(symval, pcmcia_device_id, func_id); 723 DEF_FIELD(symval, pcmcia_device_id, function); 724 DEF_FIELD(symval, pcmcia_device_id, device_no); 725 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash); 726 727 for (i=0; i<4; i++) { 728 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]); 729 } 730 731 strcpy(alias, "pcmcia:"); 732 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID, 733 manf_id); 734 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID, 735 card_id); 736 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID, 737 func_id); 738 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION, 739 function); 740 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO, 741 device_no); 742 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]); 743 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]); 744 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]); 745 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]); 746 747 add_wildcard(alias); 748 return 1; 749 } 750 751 static int do_vio_entry(const char *filename, void *symval, 752 char *alias) 753 { 754 char *tmp; 755 DEF_FIELD_ADDR(symval, vio_device_id, type); 756 DEF_FIELD_ADDR(symval, vio_device_id, compat); 757 758 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*", 759 (*compat)[0] ? *compat : "*"); 760 761 /* Replace all whitespace with underscores */ 762 for (tmp = alias; tmp && *tmp; tmp++) 763 if (isspace (*tmp)) 764 *tmp = '_'; 765 766 add_wildcard(alias); 767 return 1; 768 } 769 770 static void do_input(char *alias, 771 kernel_ulong_t *arr, unsigned int min, unsigned int max) 772 { 773 unsigned int i; 774 775 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++) 776 arr[i] = TO_NATIVE(arr[i]); 777 for (i = min; i < max; i++) 778 if (arr[i / BITS_PER_LONG] & (1ULL << (i%BITS_PER_LONG))) 779 sprintf(alias + strlen(alias), "%X,*", i); 780 } 781 782 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */ 783 static int do_input_entry(const char *filename, void *symval, 784 char *alias) 785 { 786 DEF_FIELD(symval, input_device_id, flags); 787 DEF_FIELD(symval, input_device_id, bustype); 788 DEF_FIELD(symval, input_device_id, vendor); 789 DEF_FIELD(symval, input_device_id, product); 790 DEF_FIELD(symval, input_device_id, version); 791 DEF_FIELD_ADDR(symval, input_device_id, evbit); 792 DEF_FIELD_ADDR(symval, input_device_id, keybit); 793 DEF_FIELD_ADDR(symval, input_device_id, relbit); 794 DEF_FIELD_ADDR(symval, input_device_id, absbit); 795 DEF_FIELD_ADDR(symval, input_device_id, mscbit); 796 DEF_FIELD_ADDR(symval, input_device_id, ledbit); 797 DEF_FIELD_ADDR(symval, input_device_id, sndbit); 798 DEF_FIELD_ADDR(symval, input_device_id, ffbit); 799 DEF_FIELD_ADDR(symval, input_device_id, swbit); 800 801 sprintf(alias, "input:"); 802 803 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype); 804 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor); 805 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product); 806 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version); 807 808 sprintf(alias + strlen(alias), "-e*"); 809 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT) 810 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX); 811 sprintf(alias + strlen(alias), "k*"); 812 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT) 813 do_input(alias, *keybit, 814 INPUT_DEVICE_ID_KEY_MIN_INTERESTING, 815 INPUT_DEVICE_ID_KEY_MAX); 816 sprintf(alias + strlen(alias), "r*"); 817 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT) 818 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX); 819 sprintf(alias + strlen(alias), "a*"); 820 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT) 821 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX); 822 sprintf(alias + strlen(alias), "m*"); 823 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT) 824 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX); 825 sprintf(alias + strlen(alias), "l*"); 826 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT) 827 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX); 828 sprintf(alias + strlen(alias), "s*"); 829 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT) 830 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX); 831 sprintf(alias + strlen(alias), "f*"); 832 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT) 833 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX); 834 sprintf(alias + strlen(alias), "w*"); 835 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT) 836 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX); 837 return 1; 838 } 839 840 static int do_eisa_entry(const char *filename, void *symval, 841 char *alias) 842 { 843 DEF_FIELD_ADDR(symval, eisa_device_id, sig); 844 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig); 845 return 1; 846 } 847 848 /* Looks like: parisc:tNhvNrevNsvN */ 849 static int do_parisc_entry(const char *filename, void *symval, 850 char *alias) 851 { 852 DEF_FIELD(symval, parisc_device_id, hw_type); 853 DEF_FIELD(symval, parisc_device_id, hversion); 854 DEF_FIELD(symval, parisc_device_id, hversion_rev); 855 DEF_FIELD(symval, parisc_device_id, sversion); 856 857 strcpy(alias, "parisc:"); 858 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type); 859 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion); 860 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev); 861 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion); 862 863 add_wildcard(alias); 864 return 1; 865 } 866 867 /* Looks like: sdio:cNvNdN. */ 868 static int do_sdio_entry(const char *filename, 869 void *symval, char *alias) 870 { 871 DEF_FIELD(symval, sdio_device_id, class); 872 DEF_FIELD(symval, sdio_device_id, vendor); 873 DEF_FIELD(symval, sdio_device_id, device); 874 875 strcpy(alias, "sdio:"); 876 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class); 877 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor); 878 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device); 879 add_wildcard(alias); 880 return 1; 881 } 882 883 /* Looks like: ssb:vNidNrevN. */ 884 static int do_ssb_entry(const char *filename, 885 void *symval, char *alias) 886 { 887 DEF_FIELD(symval, ssb_device_id, vendor); 888 DEF_FIELD(symval, ssb_device_id, coreid); 889 DEF_FIELD(symval, ssb_device_id, revision); 890 891 strcpy(alias, "ssb:"); 892 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor); 893 ADD(alias, "id", coreid != SSB_ANY_ID, coreid); 894 ADD(alias, "rev", revision != SSB_ANY_REV, revision); 895 add_wildcard(alias); 896 return 1; 897 } 898 899 /* Looks like: bcma:mNidNrevNclN. */ 900 static int do_bcma_entry(const char *filename, 901 void *symval, char *alias) 902 { 903 DEF_FIELD(symval, bcma_device_id, manuf); 904 DEF_FIELD(symval, bcma_device_id, id); 905 DEF_FIELD(symval, bcma_device_id, rev); 906 DEF_FIELD(symval, bcma_device_id, class); 907 908 strcpy(alias, "bcma:"); 909 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf); 910 ADD(alias, "id", id != BCMA_ANY_ID, id); 911 ADD(alias, "rev", rev != BCMA_ANY_REV, rev); 912 ADD(alias, "cl", class != BCMA_ANY_CLASS, class); 913 add_wildcard(alias); 914 return 1; 915 } 916 917 /* Looks like: virtio:dNvN */ 918 static int do_virtio_entry(const char *filename, void *symval, 919 char *alias) 920 { 921 DEF_FIELD(symval, virtio_device_id, device); 922 DEF_FIELD(symval, virtio_device_id, vendor); 923 924 strcpy(alias, "virtio:"); 925 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device); 926 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor); 927 928 add_wildcard(alias); 929 return 1; 930 } 931 932 /* 933 * Looks like: vmbus:guid 934 * Each byte of the guid will be represented by two hex characters 935 * in the name. 936 */ 937 938 static int do_vmbus_entry(const char *filename, void *symval, 939 char *alias) 940 { 941 int i; 942 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid); 943 char guid_name[(sizeof(*guid) + 1) * 2]; 944 945 for (i = 0; i < (sizeof(*guid) * 2); i += 2) 946 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2])); 947 948 strcpy(alias, "vmbus:"); 949 strcat(alias, guid_name); 950 951 return 1; 952 } 953 954 /* Looks like: rpmsg:S */ 955 static int do_rpmsg_entry(const char *filename, void *symval, 956 char *alias) 957 { 958 DEF_FIELD_ADDR(symval, rpmsg_device_id, name); 959 sprintf(alias, RPMSG_DEVICE_MODALIAS_FMT, *name); 960 961 return 1; 962 } 963 964 /* Looks like: i2c:S */ 965 static int do_i2c_entry(const char *filename, void *symval, 966 char *alias) 967 { 968 DEF_FIELD_ADDR(symval, i2c_device_id, name); 969 sprintf(alias, I2C_MODULE_PREFIX "%s", *name); 970 971 return 1; 972 } 973 974 static int do_i3c_entry(const char *filename, void *symval, 975 char *alias) 976 { 977 DEF_FIELD(symval, i3c_device_id, match_flags); 978 DEF_FIELD(symval, i3c_device_id, dcr); 979 DEF_FIELD(symval, i3c_device_id, manuf_id); 980 DEF_FIELD(symval, i3c_device_id, part_id); 981 DEF_FIELD(symval, i3c_device_id, extra_info); 982 983 strcpy(alias, "i3c:"); 984 ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr); 985 ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id); 986 ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id); 987 ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info); 988 989 return 1; 990 } 991 992 static int do_slim_entry(const char *filename, void *symval, char *alias) 993 { 994 DEF_FIELD(symval, slim_device_id, manf_id); 995 DEF_FIELD(symval, slim_device_id, prod_code); 996 997 sprintf(alias, "slim:%x:%x:*", manf_id, prod_code); 998 999 return 1; 1000 } 1001 1002 /* Looks like: spi:S */ 1003 static int do_spi_entry(const char *filename, void *symval, 1004 char *alias) 1005 { 1006 DEF_FIELD_ADDR(symval, spi_device_id, name); 1007 sprintf(alias, SPI_MODULE_PREFIX "%s", *name); 1008 1009 return 1; 1010 } 1011 1012 static const struct dmifield { 1013 const char *prefix; 1014 int field; 1015 } dmi_fields[] = { 1016 { "bvn", DMI_BIOS_VENDOR }, 1017 { "bvr", DMI_BIOS_VERSION }, 1018 { "bd", DMI_BIOS_DATE }, 1019 { "br", DMI_BIOS_RELEASE }, 1020 { "efr", DMI_EC_FIRMWARE_RELEASE }, 1021 { "svn", DMI_SYS_VENDOR }, 1022 { "pn", DMI_PRODUCT_NAME }, 1023 { "pvr", DMI_PRODUCT_VERSION }, 1024 { "rvn", DMI_BOARD_VENDOR }, 1025 { "rn", DMI_BOARD_NAME }, 1026 { "rvr", DMI_BOARD_VERSION }, 1027 { "cvn", DMI_CHASSIS_VENDOR }, 1028 { "ct", DMI_CHASSIS_TYPE }, 1029 { "cvr", DMI_CHASSIS_VERSION }, 1030 { NULL, DMI_NONE } 1031 }; 1032 1033 static void dmi_ascii_filter(char *d, const char *s) 1034 { 1035 /* Filter out characters we don't want to see in the modalias string */ 1036 for (; *s; s++) 1037 if (*s > ' ' && *s < 127 && *s != ':') 1038 *(d++) = *s; 1039 1040 *d = 0; 1041 } 1042 1043 1044 static int do_dmi_entry(const char *filename, void *symval, 1045 char *alias) 1046 { 1047 int i, j; 1048 DEF_FIELD_ADDR(symval, dmi_system_id, matches); 1049 sprintf(alias, "dmi*"); 1050 1051 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) { 1052 for (j = 0; j < 4; j++) { 1053 if ((*matches)[j].slot && 1054 (*matches)[j].slot == dmi_fields[i].field) { 1055 sprintf(alias + strlen(alias), ":%s*", 1056 dmi_fields[i].prefix); 1057 dmi_ascii_filter(alias + strlen(alias), 1058 (*matches)[j].substr); 1059 strcat(alias, "*"); 1060 } 1061 } 1062 } 1063 1064 strcat(alias, ":"); 1065 return 1; 1066 } 1067 1068 static int do_platform_entry(const char *filename, 1069 void *symval, char *alias) 1070 { 1071 DEF_FIELD_ADDR(symval, platform_device_id, name); 1072 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name); 1073 return 1; 1074 } 1075 1076 static int do_mdio_entry(const char *filename, 1077 void *symval, char *alias) 1078 { 1079 int i; 1080 DEF_FIELD(symval, mdio_device_id, phy_id); 1081 DEF_FIELD(symval, mdio_device_id, phy_id_mask); 1082 1083 alias += sprintf(alias, MDIO_MODULE_PREFIX); 1084 1085 for (i = 0; i < 32; i++) { 1086 if (!((phy_id_mask >> (31-i)) & 1)) 1087 *(alias++) = '?'; 1088 else if ((phy_id >> (31-i)) & 1) 1089 *(alias++) = '1'; 1090 else 1091 *(alias++) = '0'; 1092 } 1093 1094 /* Terminate the string */ 1095 *alias = 0; 1096 1097 return 1; 1098 } 1099 1100 /* Looks like: zorro:iN. */ 1101 static int do_zorro_entry(const char *filename, void *symval, 1102 char *alias) 1103 { 1104 DEF_FIELD(symval, zorro_device_id, id); 1105 strcpy(alias, "zorro:"); 1106 ADD(alias, "i", id != ZORRO_WILDCARD, id); 1107 return 1; 1108 } 1109 1110 /* looks like: "pnp:dD" */ 1111 static int do_isapnp_entry(const char *filename, 1112 void *symval, char *alias) 1113 { 1114 DEF_FIELD(symval, isapnp_device_id, vendor); 1115 DEF_FIELD(symval, isapnp_device_id, function); 1116 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*", 1117 'A' + ((vendor >> 2) & 0x3f) - 1, 1118 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1, 1119 'A' + ((vendor >> 8) & 0x1f) - 1, 1120 (function >> 4) & 0x0f, function & 0x0f, 1121 (function >> 12) & 0x0f, (function >> 8) & 0x0f); 1122 return 1; 1123 } 1124 1125 /* Looks like: "ipack:fNvNdN". */ 1126 static int do_ipack_entry(const char *filename, 1127 void *symval, char *alias) 1128 { 1129 DEF_FIELD(symval, ipack_device_id, format); 1130 DEF_FIELD(symval, ipack_device_id, vendor); 1131 DEF_FIELD(symval, ipack_device_id, device); 1132 strcpy(alias, "ipack:"); 1133 ADD(alias, "f", format != IPACK_ANY_FORMAT, format); 1134 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor); 1135 ADD(alias, "d", device != IPACK_ANY_ID, device); 1136 add_wildcard(alias); 1137 return 1; 1138 } 1139 1140 /* 1141 * Append a match expression for a single masked hex digit. 1142 * outp points to a pointer to the character at which to append. 1143 * *outp is updated on return to point just after the appended text, 1144 * to facilitate further appending. 1145 */ 1146 static void append_nibble_mask(char **outp, 1147 unsigned int nibble, unsigned int mask) 1148 { 1149 char *p = *outp; 1150 unsigned int i; 1151 1152 switch (mask) { 1153 case 0: 1154 *p++ = '?'; 1155 break; 1156 1157 case 0xf: 1158 p += sprintf(p, "%X", nibble); 1159 break; 1160 1161 default: 1162 /* 1163 * Dumbly emit a match pattern for all possible matching 1164 * digits. This could be improved in some cases using ranges, 1165 * but it has the advantage of being trivially correct, and is 1166 * often optimal. 1167 */ 1168 *p++ = '['; 1169 for (i = 0; i < 0x10; i++) 1170 if ((i & mask) == nibble) 1171 p += sprintf(p, "%X", i); 1172 *p++ = ']'; 1173 } 1174 1175 /* Ensure that the string remains NUL-terminated: */ 1176 *p = '\0'; 1177 1178 /* Advance the caller's end-of-string pointer: */ 1179 *outp = p; 1180 } 1181 1182 /* 1183 * looks like: "amba:dN" 1184 * 1185 * N is exactly 8 digits, where each is an upper-case hex digit, or 1186 * a ? or [] pattern matching exactly one digit. 1187 */ 1188 static int do_amba_entry(const char *filename, 1189 void *symval, char *alias) 1190 { 1191 unsigned int digit; 1192 char *p = alias; 1193 DEF_FIELD(symval, amba_id, id); 1194 DEF_FIELD(symval, amba_id, mask); 1195 1196 if ((id & mask) != id) 1197 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: id=0x%08X, mask=0x%08X. Please fix this driver.\n", 1198 filename, id, mask); 1199 1200 p += sprintf(alias, "amba:d"); 1201 for (digit = 0; digit < 8; digit++) 1202 append_nibble_mask(&p, 1203 (id >> (4 * (7 - digit))) & 0xf, 1204 (mask >> (4 * (7 - digit))) & 0xf); 1205 1206 return 1; 1207 } 1208 1209 /* 1210 * looks like: "mipscdmm:tN" 1211 * 1212 * N is exactly 2 digits, where each is an upper-case hex digit, or 1213 * a ? or [] pattern matching exactly one digit. 1214 */ 1215 static int do_mips_cdmm_entry(const char *filename, 1216 void *symval, char *alias) 1217 { 1218 DEF_FIELD(symval, mips_cdmm_device_id, type); 1219 1220 sprintf(alias, "mipscdmm:t%02X*", type); 1221 return 1; 1222 } 1223 1224 /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,* 1225 * All fields are numbers. It would be nicer to use strings for vendor 1226 * and feature, but getting those out of the build system here is too 1227 * complicated. 1228 */ 1229 1230 static int do_x86cpu_entry(const char *filename, void *symval, 1231 char *alias) 1232 { 1233 DEF_FIELD(symval, x86_cpu_id, feature); 1234 DEF_FIELD(symval, x86_cpu_id, family); 1235 DEF_FIELD(symval, x86_cpu_id, model); 1236 DEF_FIELD(symval, x86_cpu_id, vendor); 1237 1238 strcpy(alias, "cpu:type:x86,"); 1239 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor); 1240 ADD(alias, "fam", family != X86_FAMILY_ANY, family); 1241 ADD(alias, "mod", model != X86_MODEL_ANY, model); 1242 strcat(alias, ":feature:*"); 1243 if (feature != X86_FEATURE_ANY) 1244 sprintf(alias + strlen(alias), "%04X*", feature); 1245 return 1; 1246 } 1247 1248 /* LOOKS like cpu:type:*:feature:*FEAT* */ 1249 static int do_cpu_entry(const char *filename, void *symval, char *alias) 1250 { 1251 DEF_FIELD(symval, cpu_feature, feature); 1252 1253 sprintf(alias, "cpu:type:*:feature:*%04X*", feature); 1254 return 1; 1255 } 1256 1257 /* Looks like: mei:S:uuid:N:* */ 1258 static int do_mei_entry(const char *filename, void *symval, 1259 char *alias) 1260 { 1261 DEF_FIELD_ADDR(symval, mei_cl_device_id, name); 1262 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid); 1263 DEF_FIELD(symval, mei_cl_device_id, version); 1264 1265 sprintf(alias, MEI_CL_MODULE_PREFIX); 1266 sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*"); 1267 add_uuid(alias, *uuid); 1268 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version); 1269 1270 strcat(alias, ":*"); 1271 1272 return 1; 1273 } 1274 1275 /* Looks like: rapidio:vNdNavNadN */ 1276 static int do_rio_entry(const char *filename, 1277 void *symval, char *alias) 1278 { 1279 DEF_FIELD(symval, rio_device_id, did); 1280 DEF_FIELD(symval, rio_device_id, vid); 1281 DEF_FIELD(symval, rio_device_id, asm_did); 1282 DEF_FIELD(symval, rio_device_id, asm_vid); 1283 1284 strcpy(alias, "rapidio:"); 1285 ADD(alias, "v", vid != RIO_ANY_ID, vid); 1286 ADD(alias, "d", did != RIO_ANY_ID, did); 1287 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid); 1288 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did); 1289 1290 add_wildcard(alias); 1291 return 1; 1292 } 1293 1294 /* Looks like: ulpi:vNpN */ 1295 static int do_ulpi_entry(const char *filename, void *symval, 1296 char *alias) 1297 { 1298 DEF_FIELD(symval, ulpi_device_id, vendor); 1299 DEF_FIELD(symval, ulpi_device_id, product); 1300 1301 sprintf(alias, "ulpi:v%04xp%04x", vendor, product); 1302 1303 return 1; 1304 } 1305 1306 /* Looks like: hdaudio:vNrNaN */ 1307 static int do_hda_entry(const char *filename, void *symval, char *alias) 1308 { 1309 DEF_FIELD(symval, hda_device_id, vendor_id); 1310 DEF_FIELD(symval, hda_device_id, rev_id); 1311 DEF_FIELD(symval, hda_device_id, api_version); 1312 1313 strcpy(alias, "hdaudio:"); 1314 ADD(alias, "v", vendor_id != 0, vendor_id); 1315 ADD(alias, "r", rev_id != 0, rev_id); 1316 ADD(alias, "a", api_version != 0, api_version); 1317 1318 add_wildcard(alias); 1319 return 1; 1320 } 1321 1322 /* Looks like: sdw:mNpNvNcN */ 1323 static int do_sdw_entry(const char *filename, void *symval, char *alias) 1324 { 1325 DEF_FIELD(symval, sdw_device_id, mfg_id); 1326 DEF_FIELD(symval, sdw_device_id, part_id); 1327 DEF_FIELD(symval, sdw_device_id, sdw_version); 1328 DEF_FIELD(symval, sdw_device_id, class_id); 1329 1330 strcpy(alias, "sdw:"); 1331 ADD(alias, "m", mfg_id != 0, mfg_id); 1332 ADD(alias, "p", part_id != 0, part_id); 1333 ADD(alias, "v", sdw_version != 0, sdw_version); 1334 ADD(alias, "c", class_id != 0, class_id); 1335 1336 add_wildcard(alias); 1337 return 1; 1338 } 1339 1340 /* Looks like: fsl-mc:vNdN */ 1341 static int do_fsl_mc_entry(const char *filename, void *symval, 1342 char *alias) 1343 { 1344 DEF_FIELD(symval, fsl_mc_device_id, vendor); 1345 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type); 1346 1347 sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type); 1348 return 1; 1349 } 1350 1351 /* Looks like: tbsvc:kSpNvNrN */ 1352 static int do_tbsvc_entry(const char *filename, void *symval, char *alias) 1353 { 1354 DEF_FIELD(symval, tb_service_id, match_flags); 1355 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key); 1356 DEF_FIELD(symval, tb_service_id, protocol_id); 1357 DEF_FIELD(symval, tb_service_id, protocol_version); 1358 DEF_FIELD(symval, tb_service_id, protocol_revision); 1359 1360 strcpy(alias, "tbsvc:"); 1361 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY) 1362 sprintf(alias + strlen(alias), "k%s", *protocol_key); 1363 else 1364 strcat(alias + strlen(alias), "k*"); 1365 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id); 1366 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION, 1367 protocol_version); 1368 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION, 1369 protocol_revision); 1370 1371 add_wildcard(alias); 1372 return 1; 1373 } 1374 1375 /* Looks like: typec:idNmN */ 1376 static int do_typec_entry(const char *filename, void *symval, char *alias) 1377 { 1378 DEF_FIELD(symval, typec_device_id, svid); 1379 DEF_FIELD(symval, typec_device_id, mode); 1380 1381 sprintf(alias, "typec:id%04X", svid); 1382 ADD(alias, "m", mode != TYPEC_ANY_MODE, mode); 1383 1384 return 1; 1385 } 1386 1387 /* Looks like: tee:uuid */ 1388 static int do_tee_entry(const char *filename, void *symval, char *alias) 1389 { 1390 DEF_FIELD_ADDR(symval, tee_client_device_id, uuid); 1391 1392 sprintf(alias, "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", 1393 uuid->b[0], uuid->b[1], uuid->b[2], uuid->b[3], uuid->b[4], 1394 uuid->b[5], uuid->b[6], uuid->b[7], uuid->b[8], uuid->b[9], 1395 uuid->b[10], uuid->b[11], uuid->b[12], uuid->b[13], uuid->b[14], 1396 uuid->b[15]); 1397 1398 add_wildcard(alias); 1399 return 1; 1400 } 1401 1402 /* Looks like: wmi:guid */ 1403 static int do_wmi_entry(const char *filename, void *symval, char *alias) 1404 { 1405 int len; 1406 DEF_FIELD_ADDR(symval, wmi_device_id, guid_string); 1407 1408 if (strlen(*guid_string) != UUID_STRING_LEN) { 1409 warn("Invalid WMI device id 'wmi:%s' in '%s'\n", 1410 *guid_string, filename); 1411 return 0; 1412 } 1413 1414 len = snprintf(alias, ALIAS_SIZE, WMI_MODULE_PREFIX "%s", *guid_string); 1415 if (len < 0 || len >= ALIAS_SIZE) { 1416 warn("Could not generate all MODULE_ALIAS's in '%s'\n", 1417 filename); 1418 return 0; 1419 } 1420 return 1; 1421 } 1422 1423 /* Looks like: mhi:S */ 1424 static int do_mhi_entry(const char *filename, void *symval, char *alias) 1425 { 1426 DEF_FIELD_ADDR(symval, mhi_device_id, chan); 1427 sprintf(alias, MHI_DEVICE_MODALIAS_FMT, *chan); 1428 return 1; 1429 } 1430 1431 /* Looks like: mhi_ep:S */ 1432 static int do_mhi_ep_entry(const char *filename, void *symval, char *alias) 1433 { 1434 DEF_FIELD_ADDR(symval, mhi_device_id, chan); 1435 sprintf(alias, MHI_EP_DEVICE_MODALIAS_FMT, *chan); 1436 1437 return 1; 1438 } 1439 1440 /* Looks like: ishtp:{guid} */ 1441 static int do_ishtp_entry(const char *filename, void *symval, char *alias) 1442 { 1443 DEF_FIELD_ADDR(symval, ishtp_device_id, guid); 1444 1445 strcpy(alias, ISHTP_MODULE_PREFIX "{"); 1446 add_guid(alias, *guid); 1447 strcat(alias, "}"); 1448 1449 return 1; 1450 } 1451 1452 static int do_auxiliary_entry(const char *filename, void *symval, char *alias) 1453 { 1454 DEF_FIELD_ADDR(symval, auxiliary_device_id, name); 1455 sprintf(alias, AUXILIARY_MODULE_PREFIX "%s", *name); 1456 1457 return 1; 1458 } 1459 1460 /* 1461 * Looks like: ssam:dNcNtNiNfN 1462 * 1463 * N is exactly 2 digits, where each is an upper-case hex digit. 1464 */ 1465 static int do_ssam_entry(const char *filename, void *symval, char *alias) 1466 { 1467 DEF_FIELD(symval, ssam_device_id, match_flags); 1468 DEF_FIELD(symval, ssam_device_id, domain); 1469 DEF_FIELD(symval, ssam_device_id, category); 1470 DEF_FIELD(symval, ssam_device_id, target); 1471 DEF_FIELD(symval, ssam_device_id, instance); 1472 DEF_FIELD(symval, ssam_device_id, function); 1473 1474 sprintf(alias, "ssam:d%02Xc%02X", domain, category); 1475 ADD(alias, "t", match_flags & SSAM_MATCH_TARGET, target); 1476 ADD(alias, "i", match_flags & SSAM_MATCH_INSTANCE, instance); 1477 ADD(alias, "f", match_flags & SSAM_MATCH_FUNCTION, function); 1478 1479 return 1; 1480 } 1481 1482 /* Looks like: dfl:tNfN */ 1483 static int do_dfl_entry(const char *filename, void *symval, char *alias) 1484 { 1485 DEF_FIELD(symval, dfl_device_id, type); 1486 DEF_FIELD(symval, dfl_device_id, feature_id); 1487 1488 sprintf(alias, "dfl:t%04Xf%04X", type, feature_id); 1489 1490 add_wildcard(alias); 1491 return 1; 1492 } 1493 1494 /* Looks like: cdx:vNdN */ 1495 static int do_cdx_entry(const char *filename, void *symval, 1496 char *alias) 1497 { 1498 DEF_FIELD(symval, cdx_device_id, vendor); 1499 DEF_FIELD(symval, cdx_device_id, device); 1500 DEF_FIELD(symval, cdx_device_id, subvendor); 1501 DEF_FIELD(symval, cdx_device_id, subdevice); 1502 DEF_FIELD(symval, cdx_device_id, class); 1503 DEF_FIELD(symval, cdx_device_id, class_mask); 1504 DEF_FIELD(symval, cdx_device_id, override_only); 1505 1506 switch (override_only) { 1507 case 0: 1508 strcpy(alias, "cdx:"); 1509 break; 1510 case CDX_ID_F_VFIO_DRIVER_OVERRIDE: 1511 strcpy(alias, "vfio_cdx:"); 1512 break; 1513 default: 1514 warn("Unknown CDX driver_override alias %08X\n", 1515 override_only); 1516 return 0; 1517 } 1518 1519 ADD(alias, "v", vendor != CDX_ANY_ID, vendor); 1520 ADD(alias, "d", device != CDX_ANY_ID, device); 1521 ADD(alias, "sv", subvendor != CDX_ANY_ID, subvendor); 1522 ADD(alias, "sd", subdevice != CDX_ANY_ID, subdevice); 1523 ADD(alias, "c", class_mask == 0xFFFFFF, class); 1524 1525 return 1; 1526 } 1527 1528 static int do_vchiq_entry(const char *filename, void *symval, char *alias) 1529 { 1530 DEF_FIELD_ADDR(symval, vchiq_device_id, name); 1531 sprintf(alias, "vchiq:%s", *name); 1532 1533 return 1; 1534 } 1535 1536 /* Looks like: coreboot:tN */ 1537 static int do_coreboot_entry(const char *filename, void *symval, char *alias) 1538 { 1539 DEF_FIELD(symval, coreboot_device_id, tag); 1540 sprintf(alias, "coreboot:t%08X", tag); 1541 1542 return 1; 1543 } 1544 1545 /* Does namelen bytes of name exactly match the symbol? */ 1546 static bool sym_is(const char *name, unsigned namelen, const char *symbol) 1547 { 1548 if (namelen != strlen(symbol)) 1549 return false; 1550 1551 return memcmp(name, symbol, namelen) == 0; 1552 } 1553 1554 static void do_table(void *symval, unsigned long size, 1555 unsigned long id_size, 1556 const char *device_id, 1557 int (*do_entry)(const char *filename, void *symval, char *alias), 1558 struct module *mod) 1559 { 1560 unsigned int i; 1561 char alias[ALIAS_SIZE]; 1562 1563 device_id_check(mod->name, device_id, size, id_size, symval); 1564 /* Leave last one: it's the terminator. */ 1565 size -= id_size; 1566 1567 for (i = 0; i < size; i += id_size) { 1568 if (do_entry(mod->name, symval+i, alias)) { 1569 module_alias_printf(mod, false, "%s", alias); 1570 } 1571 } 1572 } 1573 1574 static const struct devtable devtable[] = { 1575 {"hid", SIZE_hid_device_id, do_hid_entry}, 1576 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry}, 1577 {"pci", SIZE_pci_device_id, do_pci_entry}, 1578 {"ccw", SIZE_ccw_device_id, do_ccw_entry}, 1579 {"ap", SIZE_ap_device_id, do_ap_entry}, 1580 {"css", SIZE_css_device_id, do_css_entry}, 1581 {"serio", SIZE_serio_device_id, do_serio_entry}, 1582 {"acpi", SIZE_acpi_device_id, do_acpi_entry}, 1583 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry}, 1584 {"vio", SIZE_vio_device_id, do_vio_entry}, 1585 {"input", SIZE_input_device_id, do_input_entry}, 1586 {"eisa", SIZE_eisa_device_id, do_eisa_entry}, 1587 {"parisc", SIZE_parisc_device_id, do_parisc_entry}, 1588 {"sdio", SIZE_sdio_device_id, do_sdio_entry}, 1589 {"ssb", SIZE_ssb_device_id, do_ssb_entry}, 1590 {"bcma", SIZE_bcma_device_id, do_bcma_entry}, 1591 {"virtio", SIZE_virtio_device_id, do_virtio_entry}, 1592 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry}, 1593 {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry}, 1594 {"i2c", SIZE_i2c_device_id, do_i2c_entry}, 1595 {"i3c", SIZE_i3c_device_id, do_i3c_entry}, 1596 {"slim", SIZE_slim_device_id, do_slim_entry}, 1597 {"spi", SIZE_spi_device_id, do_spi_entry}, 1598 {"dmi", SIZE_dmi_system_id, do_dmi_entry}, 1599 {"platform", SIZE_platform_device_id, do_platform_entry}, 1600 {"mdio", SIZE_mdio_device_id, do_mdio_entry}, 1601 {"zorro", SIZE_zorro_device_id, do_zorro_entry}, 1602 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry}, 1603 {"ipack", SIZE_ipack_device_id, do_ipack_entry}, 1604 {"amba", SIZE_amba_id, do_amba_entry}, 1605 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry}, 1606 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry}, 1607 {"cpu", SIZE_cpu_feature, do_cpu_entry}, 1608 {"mei", SIZE_mei_cl_device_id, do_mei_entry}, 1609 {"rapidio", SIZE_rio_device_id, do_rio_entry}, 1610 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry}, 1611 {"hdaudio", SIZE_hda_device_id, do_hda_entry}, 1612 {"sdw", SIZE_sdw_device_id, do_sdw_entry}, 1613 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry}, 1614 {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry}, 1615 {"typec", SIZE_typec_device_id, do_typec_entry}, 1616 {"tee", SIZE_tee_client_device_id, do_tee_entry}, 1617 {"wmi", SIZE_wmi_device_id, do_wmi_entry}, 1618 {"mhi", SIZE_mhi_device_id, do_mhi_entry}, 1619 {"mhi_ep", SIZE_mhi_device_id, do_mhi_ep_entry}, 1620 {"auxiliary", SIZE_auxiliary_device_id, do_auxiliary_entry}, 1621 {"ssam", SIZE_ssam_device_id, do_ssam_entry}, 1622 {"dfl", SIZE_dfl_device_id, do_dfl_entry}, 1623 {"ishtp", SIZE_ishtp_device_id, do_ishtp_entry}, 1624 {"cdx", SIZE_cdx_device_id, do_cdx_entry}, 1625 {"vchiq", SIZE_vchiq_device_id, do_vchiq_entry}, 1626 {"coreboot", SIZE_coreboot_device_id, do_coreboot_entry}, 1627 }; 1628 1629 /* Create MODULE_ALIAS() statements. 1630 * At this time, we cannot write the actual output C source yet, 1631 * so we write into the mod->dev_table_buf buffer. */ 1632 void handle_moddevtable(struct module *mod, struct elf_info *info, 1633 Elf_Sym *sym, const char *symname) 1634 { 1635 void *symval; 1636 char *zeros = NULL; 1637 const char *name, *identifier; 1638 unsigned int namelen; 1639 1640 /* We're looking for a section relative symbol */ 1641 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections) 1642 return; 1643 1644 /* We're looking for an object */ 1645 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT) 1646 return; 1647 1648 /* All our symbols are of form __mod_<name>__<identifier>_device_table. */ 1649 if (strncmp(symname, "__mod_", strlen("__mod_"))) 1650 return; 1651 name = symname + strlen("__mod_"); 1652 namelen = strlen(name); 1653 if (namelen < strlen("_device_table")) 1654 return; 1655 if (strcmp(name + namelen - strlen("_device_table"), "_device_table")) 1656 return; 1657 identifier = strstr(name, "__"); 1658 if (!identifier) 1659 return; 1660 namelen = identifier - name; 1661 1662 /* Handle all-NULL symbols allocated into .bss */ 1663 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) { 1664 zeros = calloc(1, sym->st_size); 1665 symval = zeros; 1666 } else { 1667 symval = sym_get_data(info, sym); 1668 } 1669 1670 /* First handle the "special" cases */ 1671 if (sym_is(name, namelen, "usb")) 1672 do_usb_table(symval, sym->st_size, mod); 1673 else if (sym_is(name, namelen, "of")) 1674 do_of_table(symval, sym->st_size, mod); 1675 else if (sym_is(name, namelen, "pnp")) 1676 do_pnp_device_entry(symval, sym->st_size, mod); 1677 else if (sym_is(name, namelen, "pnp_card")) 1678 do_pnp_card_entries(symval, sym->st_size, mod); 1679 else { 1680 int i; 1681 1682 for (i = 0; i < ARRAY_SIZE(devtable); i++) { 1683 const struct devtable *p = &devtable[i]; 1684 1685 if (sym_is(name, namelen, p->device_id)) { 1686 do_table(symval, sym->st_size, p->id_size, 1687 p->device_id, p->do_entry, mod); 1688 break; 1689 } 1690 } 1691 } 1692 free(zeros); 1693 } 1694