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