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 "modpost.h" 14 #include "devicetable-offsets.h" 15 16 /* We use the ELF typedefs for kernel_ulong_t but bite the bullet and 17 * use either stdint.h or inttypes.h for the rest. */ 18 #if KERNEL_ELFCLASS == ELFCLASS32 19 typedef Elf32_Addr kernel_ulong_t; 20 #define BITS_PER_LONG 32 21 #else 22 typedef Elf64_Addr kernel_ulong_t; 23 #define BITS_PER_LONG 64 24 #endif 25 #ifdef __sun__ 26 #include <inttypes.h> 27 #else 28 #include <stdint.h> 29 #endif 30 31 #include <ctype.h> 32 #include <stdbool.h> 33 34 typedef uint32_t __u32; 35 typedef uint16_t __u16; 36 typedef unsigned char __u8; 37 38 /* UUID types for backward compatibility, don't use in new code */ 39 typedef struct { 40 __u8 b[16]; 41 } guid_t; 42 43 typedef struct { 44 __u8 b[16]; 45 } uuid_t; 46 47 #define UUID_STRING_LEN 36 48 49 /* MEI UUID type, don't use anywhere else */ 50 typedef struct { 51 __u8 b[16]; 52 } uuid_le; 53 54 /* Big exception to the "don't include kernel headers into userspace, which 55 * even potentially has different endianness and word sizes, since 56 * we handle those differences explicitly below */ 57 #include "../../include/linux/mod_devicetable.h" 58 59 /* This array collects all instances that use the generic do_table */ 60 struct devtable { 61 const char *device_id; /* name of table, __mod_<name>__*_device_table. */ 62 unsigned long id_size; 63 int (*do_entry)(const char *filename, void *symval, char *alias); 64 }; 65 66 /* Size of alias provided to do_entry functions */ 67 #define ALIAS_SIZE 500 68 69 /* Define a variable f that holds the value of field f of struct devid 70 * based at address m. 71 */ 72 #define DEF_FIELD(m, devid, f) \ 73 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) 74 75 /* Define a variable v that holds the address of field f of struct devid 76 * based at address m. Due to the way typeof works, for a field of type 77 * T[N] the variable has type T(*)[N], _not_ T*. 78 */ 79 #define DEF_FIELD_ADDR_VAR(m, devid, f, v) \ 80 typeof(((struct devid *)0)->f) *v = ((m) + OFF_##devid##_##f) 81 82 /* Define a variable f that holds the address of field f of struct devid 83 * based at address m. Due to the way typeof works, for a field of type 84 * T[N] the variable has type T(*)[N], _not_ T*. 85 */ 86 #define DEF_FIELD_ADDR(m, devid, f) \ 87 DEF_FIELD_ADDR_VAR(m, devid, f, f) 88 89 #define ADD(str, sep, cond, field) \ 90 do { \ 91 strcat(str, sep); \ 92 if (cond) \ 93 sprintf(str + strlen(str), \ 94 sizeof(field) == 1 ? "%02X" : \ 95 sizeof(field) == 2 ? "%04X" : \ 96 sizeof(field) == 4 ? "%08X" : "", \ 97 field); \ 98 else \ 99 sprintf(str + strlen(str), "*"); \ 100 } while(0) 101 102 /* End in a wildcard, for future extension */ 103 static inline void add_wildcard(char *str) 104 { 105 int len = strlen(str); 106 107 if (str[len - 1] != '*') 108 strcat(str + len, "*"); 109 } 110 111 static inline void add_uuid(char *str, uuid_le uuid) 112 { 113 int len = strlen(str); 114 115 sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", 116 uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0], 117 uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6], 118 uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11], 119 uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]); 120 } 121 122 static inline void add_guid(char *str, guid_t guid) 123 { 124 int len = strlen(str); 125 126 sprintf(str + len, "%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X", 127 guid.b[3], guid.b[2], guid.b[1], guid.b[0], 128 guid.b[5], guid.b[4], guid.b[7], guid.b[6], 129 guid.b[8], guid.b[9], guid.b[10], guid.b[11], 130 guid.b[12], guid.b[13], guid.b[14], guid.b[15]); 131 } 132 133 /** 134 * Check that sizeof(device_id type) are consistent with size of section 135 * in .o file. If in-consistent then userspace and kernel does not agree 136 * on actual size which is a bug. 137 * Also verify that the final entry in the table is all zeros. 138 * Ignore both checks if build host differ from target host and size differs. 139 **/ 140 static void device_id_check(const char *modname, const char *device_id, 141 unsigned long size, unsigned long id_size, 142 void *symval) 143 { 144 int i; 145 146 if (size % id_size || size < id_size) { 147 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo of the size of section __mod_%s__<identifier>_device_table=%lu.\n" 148 "Fix definition of struct %s_device_id in mod_devicetable.h\n", 149 modname, device_id, id_size, device_id, size, device_id); 150 } 151 /* Verify last one is a terminator */ 152 for (i = 0; i < id_size; i++ ) { 153 if (*(uint8_t*)(symval+size-id_size+i)) { 154 fprintf(stderr, 155 "%s: struct %s_device_id is %lu bytes. The last of %lu is:\n", 156 modname, device_id, id_size, size / id_size); 157 for (i = 0; i < id_size; i++ ) 158 fprintf(stderr,"0x%02x ", 159 *(uint8_t*)(symval+size-id_size+i) ); 160 fprintf(stderr,"\n"); 161 fatal("%s: struct %s_device_id is not terminated with a NULL entry!\n", 162 modname, device_id); 163 } 164 } 165 } 166 167 /* USB is special because the bcdDevice can be matched against a numeric range */ 168 /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */ 169 static void do_usb_entry(void *symval, 170 unsigned int bcdDevice_initial, int bcdDevice_initial_digits, 171 unsigned char range_lo, unsigned char range_hi, 172 unsigned char max, struct module *mod) 173 { 174 char alias[500]; 175 DEF_FIELD(symval, usb_device_id, match_flags); 176 DEF_FIELD(symval, usb_device_id, idVendor); 177 DEF_FIELD(symval, usb_device_id, idProduct); 178 DEF_FIELD(symval, usb_device_id, bcdDevice_lo); 179 DEF_FIELD(symval, usb_device_id, bDeviceClass); 180 DEF_FIELD(symval, usb_device_id, bDeviceSubClass); 181 DEF_FIELD(symval, usb_device_id, bDeviceProtocol); 182 DEF_FIELD(symval, usb_device_id, bInterfaceClass); 183 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass); 184 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol); 185 DEF_FIELD(symval, usb_device_id, bInterfaceNumber); 186 187 strcpy(alias, "usb:"); 188 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR, 189 idVendor); 190 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT, 191 idProduct); 192 193 strcat(alias, "d"); 194 if (bcdDevice_initial_digits) 195 sprintf(alias + strlen(alias), "%0*X", 196 bcdDevice_initial_digits, bcdDevice_initial); 197 if (range_lo == range_hi) 198 sprintf(alias + strlen(alias), "%X", range_lo); 199 else if (range_lo > 0 || range_hi < max) { 200 if (range_lo > 0x9 || range_hi < 0xA) 201 sprintf(alias + strlen(alias), 202 "[%X-%X]", 203 range_lo, 204 range_hi); 205 else { 206 sprintf(alias + strlen(alias), 207 range_lo < 0x9 ? "[%X-9" : "[%X", 208 range_lo); 209 sprintf(alias + strlen(alias), 210 range_hi > 0xA ? "A-%X]" : "%X]", 211 range_hi); 212 } 213 } 214 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1)) 215 strcat(alias, "*"); 216 217 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS, 218 bDeviceClass); 219 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS, 220 bDeviceSubClass); 221 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL, 222 bDeviceProtocol); 223 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS, 224 bInterfaceClass); 225 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS, 226 bInterfaceSubClass); 227 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL, 228 bInterfaceProtocol); 229 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER, 230 bInterfaceNumber); 231 232 add_wildcard(alias); 233 buf_printf(&mod->dev_table_buf, 234 "MODULE_ALIAS(\"%s\");\n", alias); 235 } 236 237 /* Handles increment/decrement of BCD formatted integers */ 238 /* Returns the previous value, so it works like i++ or i-- */ 239 static unsigned int incbcd(unsigned int *bcd, 240 int inc, 241 unsigned char max, 242 size_t chars) 243 { 244 unsigned int init = *bcd, i, j; 245 unsigned long long c, dec = 0; 246 247 /* If bcd is not in BCD format, just increment */ 248 if (max > 0x9) { 249 *bcd += inc; 250 return init; 251 } 252 253 /* Convert BCD to Decimal */ 254 for (i=0 ; i < chars ; i++) { 255 c = (*bcd >> (i << 2)) & 0xf; 256 c = c > 9 ? 9 : c; /* force to bcd just in case */ 257 for (j=0 ; j < i ; j++) 258 c = c * 10; 259 dec += c; 260 } 261 262 /* Do our increment/decrement */ 263 dec += inc; 264 *bcd = 0; 265 266 /* Convert back to BCD */ 267 for (i=0 ; i < chars ; i++) { 268 for (c=1,j=0 ; j < i ; j++) 269 c = c * 10; 270 c = (dec / c) % 10; 271 *bcd += c << (i << 2); 272 } 273 return init; 274 } 275 276 static void do_usb_entry_multi(void *symval, struct module *mod) 277 { 278 unsigned int devlo, devhi; 279 unsigned char chi, clo, max; 280 int ndigits; 281 282 DEF_FIELD(symval, usb_device_id, match_flags); 283 DEF_FIELD(symval, usb_device_id, idVendor); 284 DEF_FIELD(symval, usb_device_id, idProduct); 285 DEF_FIELD(symval, usb_device_id, bcdDevice_lo); 286 DEF_FIELD(symval, usb_device_id, bcdDevice_hi); 287 DEF_FIELD(symval, usb_device_id, bDeviceClass); 288 DEF_FIELD(symval, usb_device_id, bInterfaceClass); 289 290 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ? 291 bcdDevice_lo : 0x0U; 292 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ? 293 bcdDevice_hi : ~0x0U; 294 295 /* Figure out if this entry is in bcd or hex format */ 296 max = 0x9; /* Default to decimal format */ 297 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) { 298 clo = (devlo >> (ndigits << 2)) & 0xf; 299 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf; 300 if (clo > max || chi > max) { 301 max = 0xf; 302 break; 303 } 304 } 305 306 /* 307 * Some modules (visor) have empty slots as placeholder for 308 * run-time specification that results in catch-all alias 309 */ 310 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass)) 311 return; 312 313 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */ 314 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) { 315 clo = devlo & 0xf; 316 chi = devhi & 0xf; 317 if (chi > max) /* If we are in bcd mode, truncate if necessary */ 318 chi = max; 319 devlo >>= 4; 320 devhi >>= 4; 321 322 if (devlo == devhi || !ndigits) { 323 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod); 324 break; 325 } 326 327 if (clo > 0x0) 328 do_usb_entry(symval, 329 incbcd(&devlo, 1, max, 330 sizeof(bcdDevice_lo) * 2), 331 ndigits, clo, max, max, mod); 332 333 if (chi < max) 334 do_usb_entry(symval, 335 incbcd(&devhi, -1, max, 336 sizeof(bcdDevice_lo) * 2), 337 ndigits, 0x0, chi, max, mod); 338 } 339 } 340 341 static void do_usb_table(void *symval, unsigned long size, 342 struct module *mod) 343 { 344 unsigned int i; 345 const unsigned long id_size = SIZE_usb_device_id; 346 347 device_id_check(mod->name, "usb", size, id_size, symval); 348 349 /* Leave last one: it's the terminator. */ 350 size -= id_size; 351 352 for (i = 0; i < size; i += id_size) 353 do_usb_entry_multi(symval + i, mod); 354 } 355 356 static void do_of_entry_multi(void *symval, struct module *mod) 357 { 358 char alias[500]; 359 int len; 360 char *tmp; 361 362 DEF_FIELD_ADDR(symval, of_device_id, name); 363 DEF_FIELD_ADDR(symval, of_device_id, type); 364 DEF_FIELD_ADDR(symval, of_device_id, compatible); 365 366 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*", 367 (*type)[0] ? *type : "*"); 368 369 if ((*compatible)[0]) 370 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "", 371 *compatible); 372 373 /* Replace all whitespace with underscores */ 374 for (tmp = alias; tmp && *tmp; tmp++) 375 if (isspace(*tmp)) 376 *tmp = '_'; 377 378 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias); 379 strcat(alias, "C"); 380 add_wildcard(alias); 381 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias); 382 } 383 384 static void do_of_table(void *symval, unsigned long size, 385 struct module *mod) 386 { 387 unsigned int i; 388 const unsigned long id_size = SIZE_of_device_id; 389 390 device_id_check(mod->name, "of", size, id_size, symval); 391 392 /* Leave last one: it's the terminator. */ 393 size -= id_size; 394 395 for (i = 0; i < size; i += id_size) 396 do_of_entry_multi(symval + i, mod); 397 } 398 399 /* Looks like: hid:bNvNpN */ 400 static int do_hid_entry(const char *filename, 401 void *symval, char *alias) 402 { 403 DEF_FIELD(symval, hid_device_id, bus); 404 DEF_FIELD(symval, hid_device_id, group); 405 DEF_FIELD(symval, hid_device_id, vendor); 406 DEF_FIELD(symval, hid_device_id, product); 407 408 sprintf(alias, "hid:"); 409 ADD(alias, "b", bus != HID_BUS_ANY, bus); 410 ADD(alias, "g", group != HID_GROUP_ANY, group); 411 ADD(alias, "v", vendor != HID_ANY_ID, vendor); 412 ADD(alias, "p", product != HID_ANY_ID, product); 413 414 return 1; 415 } 416 417 /* Looks like: ieee1394:venNmoNspNverN */ 418 static int do_ieee1394_entry(const char *filename, 419 void *symval, char *alias) 420 { 421 DEF_FIELD(symval, ieee1394_device_id, match_flags); 422 DEF_FIELD(symval, ieee1394_device_id, vendor_id); 423 DEF_FIELD(symval, ieee1394_device_id, model_id); 424 DEF_FIELD(symval, ieee1394_device_id, specifier_id); 425 DEF_FIELD(symval, ieee1394_device_id, version); 426 427 strcpy(alias, "ieee1394:"); 428 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID, 429 vendor_id); 430 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID, 431 model_id); 432 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID, 433 specifier_id); 434 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION, 435 version); 436 437 add_wildcard(alias); 438 return 1; 439 } 440 441 /* Looks like: pci:vNdNsvNsdNbcNscNiN or <prefix>_pci:vNdNsvNsdNbcNscNiN. */ 442 static int do_pci_entry(const char *filename, 443 void *symval, char *alias) 444 { 445 /* Class field can be divided into these three. */ 446 unsigned char baseclass, subclass, interface, 447 baseclass_mask, subclass_mask, interface_mask; 448 449 DEF_FIELD(symval, pci_device_id, vendor); 450 DEF_FIELD(symval, pci_device_id, device); 451 DEF_FIELD(symval, pci_device_id, subvendor); 452 DEF_FIELD(symval, pci_device_id, subdevice); 453 DEF_FIELD(symval, pci_device_id, class); 454 DEF_FIELD(symval, pci_device_id, class_mask); 455 DEF_FIELD(symval, pci_device_id, override_only); 456 457 switch (override_only) { 458 case 0: 459 strcpy(alias, "pci:"); 460 break; 461 case PCI_ID_F_VFIO_DRIVER_OVERRIDE: 462 strcpy(alias, "vfio_pci:"); 463 break; 464 default: 465 warn("Unknown PCI driver_override alias %08X\n", 466 override_only); 467 return 0; 468 } 469 470 ADD(alias, "v", vendor != PCI_ANY_ID, vendor); 471 ADD(alias, "d", device != PCI_ANY_ID, device); 472 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor); 473 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice); 474 475 baseclass = (class) >> 16; 476 baseclass_mask = (class_mask) >> 16; 477 subclass = (class) >> 8; 478 subclass_mask = (class_mask) >> 8; 479 interface = class; 480 interface_mask = class_mask; 481 482 if ((baseclass_mask != 0 && baseclass_mask != 0xFF) 483 || (subclass_mask != 0 && subclass_mask != 0xFF) 484 || (interface_mask != 0 && interface_mask != 0xFF)) { 485 warn("Can't handle masks in %s:%04X\n", 486 filename, class_mask); 487 return 0; 488 } 489 490 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass); 491 ADD(alias, "sc", subclass_mask == 0xFF, subclass); 492 ADD(alias, "i", interface_mask == 0xFF, interface); 493 add_wildcard(alias); 494 return 1; 495 } 496 497 /* looks like: "ccw:tNmNdtNdmN" */ 498 static int do_ccw_entry(const char *filename, 499 void *symval, char *alias) 500 { 501 DEF_FIELD(symval, ccw_device_id, match_flags); 502 DEF_FIELD(symval, ccw_device_id, cu_type); 503 DEF_FIELD(symval, ccw_device_id, cu_model); 504 DEF_FIELD(symval, ccw_device_id, dev_type); 505 DEF_FIELD(symval, ccw_device_id, dev_model); 506 507 strcpy(alias, "ccw:"); 508 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE, 509 cu_type); 510 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL, 511 cu_model); 512 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE, 513 dev_type); 514 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL, 515 dev_model); 516 add_wildcard(alias); 517 return 1; 518 } 519 520 /* looks like: "ap:tN" */ 521 static int do_ap_entry(const char *filename, 522 void *symval, char *alias) 523 { 524 DEF_FIELD(symval, ap_device_id, dev_type); 525 526 sprintf(alias, "ap:t%02X*", dev_type); 527 return 1; 528 } 529 530 /* looks like: "css:tN" */ 531 static int do_css_entry(const char *filename, 532 void *symval, char *alias) 533 { 534 DEF_FIELD(symval, css_device_id, type); 535 536 sprintf(alias, "css:t%01X", type); 537 return 1; 538 } 539 540 /* Looks like: "serio:tyNprNidNexN" */ 541 static int do_serio_entry(const char *filename, 542 void *symval, char *alias) 543 { 544 DEF_FIELD(symval, serio_device_id, type); 545 DEF_FIELD(symval, serio_device_id, proto); 546 DEF_FIELD(symval, serio_device_id, id); 547 DEF_FIELD(symval, serio_device_id, extra); 548 549 strcpy(alias, "serio:"); 550 ADD(alias, "ty", type != SERIO_ANY, type); 551 ADD(alias, "pr", proto != SERIO_ANY, proto); 552 ADD(alias, "id", id != SERIO_ANY, id); 553 ADD(alias, "ex", extra != SERIO_ANY, extra); 554 555 add_wildcard(alias); 556 return 1; 557 } 558 559 /* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or 560 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if) 561 * 562 * NOTE: Each driver should use one of the following : _HID, _CIDs 563 * or _CLS. Also, bb, ss, and pp can be substituted with ?? 564 * as don't care byte. 565 */ 566 static int do_acpi_entry(const char *filename, 567 void *symval, char *alias) 568 { 569 DEF_FIELD_ADDR(symval, acpi_device_id, id); 570 DEF_FIELD(symval, acpi_device_id, cls); 571 DEF_FIELD(symval, acpi_device_id, cls_msk); 572 573 if (id && strlen((const char *)*id)) 574 sprintf(alias, "acpi*:%s:*", *id); 575 else { 576 int i, byte_shift, cnt = 0; 577 unsigned int msk; 578 579 sprintf(&alias[cnt], "acpi*:"); 580 cnt = 6; 581 for (i = 1; i <= 3; i++) { 582 byte_shift = 8 * (3-i); 583 msk = (cls_msk >> byte_shift) & 0xFF; 584 if (msk) 585 sprintf(&alias[cnt], "%02x", 586 (cls >> byte_shift) & 0xFF); 587 else 588 sprintf(&alias[cnt], "??"); 589 cnt += 2; 590 } 591 sprintf(&alias[cnt], ":*"); 592 } 593 return 1; 594 } 595 596 /* looks like: "pnp:dD" */ 597 static void do_pnp_device_entry(void *symval, unsigned long size, 598 struct module *mod) 599 { 600 const unsigned long id_size = SIZE_pnp_device_id; 601 const unsigned int count = (size / id_size)-1; 602 unsigned int i; 603 604 device_id_check(mod->name, "pnp", size, id_size, symval); 605 606 for (i = 0; i < count; i++) { 607 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id); 608 char acpi_id[sizeof(*id)]; 609 int j; 610 611 buf_printf(&mod->dev_table_buf, 612 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id); 613 614 /* fix broken pnp bus lowercasing */ 615 for (j = 0; j < sizeof(acpi_id); j++) 616 acpi_id[j] = toupper((*id)[j]); 617 buf_printf(&mod->dev_table_buf, 618 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id); 619 } 620 } 621 622 /* looks like: "pnp:dD" for every device of the card */ 623 static void do_pnp_card_entries(void *symval, unsigned long size, 624 struct module *mod) 625 { 626 const unsigned long id_size = SIZE_pnp_card_device_id; 627 const unsigned int count = (size / id_size)-1; 628 unsigned int i; 629 630 device_id_check(mod->name, "pnp", size, id_size, symval); 631 632 for (i = 0; i < count; i++) { 633 unsigned int j; 634 DEF_FIELD_ADDR(symval + i * id_size, pnp_card_device_id, devs); 635 636 for (j = 0; j < PNP_MAX_DEVICES; j++) { 637 const char *id = (char *)(*devs)[j].id; 638 int i2, j2; 639 int dup = 0; 640 641 if (!id[0]) 642 break; 643 644 /* find duplicate, already added value */ 645 for (i2 = 0; i2 < i && !dup; i2++) { 646 DEF_FIELD_ADDR_VAR(symval + i2 * id_size, 647 pnp_card_device_id, 648 devs, devs_dup); 649 650 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) { 651 const char *id2 = 652 (char *)(*devs_dup)[j2].id; 653 654 if (!id2[0]) 655 break; 656 657 if (!strcmp(id, id2)) { 658 dup = 1; 659 break; 660 } 661 } 662 } 663 664 /* add an individual alias for every device entry */ 665 if (!dup) { 666 char acpi_id[PNP_ID_LEN]; 667 int k; 668 669 buf_printf(&mod->dev_table_buf, 670 "MODULE_ALIAS(\"pnp:d%s*\");\n", id); 671 672 /* fix broken pnp bus lowercasing */ 673 for (k = 0; k < sizeof(acpi_id); k++) 674 acpi_id[k] = toupper(id[k]); 675 buf_printf(&mod->dev_table_buf, 676 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id); 677 } 678 } 679 } 680 } 681 682 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */ 683 static int do_pcmcia_entry(const char *filename, 684 void *symval, char *alias) 685 { 686 unsigned int i; 687 DEF_FIELD(symval, pcmcia_device_id, match_flags); 688 DEF_FIELD(symval, pcmcia_device_id, manf_id); 689 DEF_FIELD(symval, pcmcia_device_id, card_id); 690 DEF_FIELD(symval, pcmcia_device_id, func_id); 691 DEF_FIELD(symval, pcmcia_device_id, function); 692 DEF_FIELD(symval, pcmcia_device_id, device_no); 693 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash); 694 695 for (i=0; i<4; i++) { 696 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]); 697 } 698 699 strcpy(alias, "pcmcia:"); 700 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID, 701 manf_id); 702 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID, 703 card_id); 704 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID, 705 func_id); 706 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION, 707 function); 708 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO, 709 device_no); 710 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]); 711 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]); 712 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]); 713 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]); 714 715 add_wildcard(alias); 716 return 1; 717 } 718 719 static int do_vio_entry(const char *filename, void *symval, 720 char *alias) 721 { 722 char *tmp; 723 DEF_FIELD_ADDR(symval, vio_device_id, type); 724 DEF_FIELD_ADDR(symval, vio_device_id, compat); 725 726 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*", 727 (*compat)[0] ? *compat : "*"); 728 729 /* Replace all whitespace with underscores */ 730 for (tmp = alias; tmp && *tmp; tmp++) 731 if (isspace (*tmp)) 732 *tmp = '_'; 733 734 add_wildcard(alias); 735 return 1; 736 } 737 738 static void do_input(char *alias, 739 kernel_ulong_t *arr, unsigned int min, unsigned int max) 740 { 741 unsigned int i; 742 743 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++) 744 arr[i] = TO_NATIVE(arr[i]); 745 for (i = min; i < max; i++) 746 if (arr[i / BITS_PER_LONG] & (1ULL << (i%BITS_PER_LONG))) 747 sprintf(alias + strlen(alias), "%X,*", i); 748 } 749 750 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */ 751 static int do_input_entry(const char *filename, void *symval, 752 char *alias) 753 { 754 DEF_FIELD(symval, input_device_id, flags); 755 DEF_FIELD(symval, input_device_id, bustype); 756 DEF_FIELD(symval, input_device_id, vendor); 757 DEF_FIELD(symval, input_device_id, product); 758 DEF_FIELD(symval, input_device_id, version); 759 DEF_FIELD_ADDR(symval, input_device_id, evbit); 760 DEF_FIELD_ADDR(symval, input_device_id, keybit); 761 DEF_FIELD_ADDR(symval, input_device_id, relbit); 762 DEF_FIELD_ADDR(symval, input_device_id, absbit); 763 DEF_FIELD_ADDR(symval, input_device_id, mscbit); 764 DEF_FIELD_ADDR(symval, input_device_id, ledbit); 765 DEF_FIELD_ADDR(symval, input_device_id, sndbit); 766 DEF_FIELD_ADDR(symval, input_device_id, ffbit); 767 DEF_FIELD_ADDR(symval, input_device_id, swbit); 768 769 sprintf(alias, "input:"); 770 771 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype); 772 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor); 773 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product); 774 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version); 775 776 sprintf(alias + strlen(alias), "-e*"); 777 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT) 778 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX); 779 sprintf(alias + strlen(alias), "k*"); 780 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT) 781 do_input(alias, *keybit, 782 INPUT_DEVICE_ID_KEY_MIN_INTERESTING, 783 INPUT_DEVICE_ID_KEY_MAX); 784 sprintf(alias + strlen(alias), "r*"); 785 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT) 786 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX); 787 sprintf(alias + strlen(alias), "a*"); 788 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT) 789 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX); 790 sprintf(alias + strlen(alias), "m*"); 791 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT) 792 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX); 793 sprintf(alias + strlen(alias), "l*"); 794 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT) 795 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX); 796 sprintf(alias + strlen(alias), "s*"); 797 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT) 798 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX); 799 sprintf(alias + strlen(alias), "f*"); 800 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT) 801 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX); 802 sprintf(alias + strlen(alias), "w*"); 803 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT) 804 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX); 805 return 1; 806 } 807 808 static int do_eisa_entry(const char *filename, void *symval, 809 char *alias) 810 { 811 DEF_FIELD_ADDR(symval, eisa_device_id, sig); 812 if (sig[0]) 813 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig); 814 else 815 strcat(alias, "*"); 816 return 1; 817 } 818 819 /* Looks like: parisc:tNhvNrevNsvN */ 820 static int do_parisc_entry(const char *filename, void *symval, 821 char *alias) 822 { 823 DEF_FIELD(symval, parisc_device_id, hw_type); 824 DEF_FIELD(symval, parisc_device_id, hversion); 825 DEF_FIELD(symval, parisc_device_id, hversion_rev); 826 DEF_FIELD(symval, parisc_device_id, sversion); 827 828 strcpy(alias, "parisc:"); 829 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type); 830 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion); 831 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev); 832 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion); 833 834 add_wildcard(alias); 835 return 1; 836 } 837 838 /* Looks like: sdio:cNvNdN. */ 839 static int do_sdio_entry(const char *filename, 840 void *symval, char *alias) 841 { 842 DEF_FIELD(symval, sdio_device_id, class); 843 DEF_FIELD(symval, sdio_device_id, vendor); 844 DEF_FIELD(symval, sdio_device_id, device); 845 846 strcpy(alias, "sdio:"); 847 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class); 848 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor); 849 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device); 850 add_wildcard(alias); 851 return 1; 852 } 853 854 /* Looks like: ssb:vNidNrevN. */ 855 static int do_ssb_entry(const char *filename, 856 void *symval, char *alias) 857 { 858 DEF_FIELD(symval, ssb_device_id, vendor); 859 DEF_FIELD(symval, ssb_device_id, coreid); 860 DEF_FIELD(symval, ssb_device_id, revision); 861 862 strcpy(alias, "ssb:"); 863 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor); 864 ADD(alias, "id", coreid != SSB_ANY_ID, coreid); 865 ADD(alias, "rev", revision != SSB_ANY_REV, revision); 866 add_wildcard(alias); 867 return 1; 868 } 869 870 /* Looks like: bcma:mNidNrevNclN. */ 871 static int do_bcma_entry(const char *filename, 872 void *symval, char *alias) 873 { 874 DEF_FIELD(symval, bcma_device_id, manuf); 875 DEF_FIELD(symval, bcma_device_id, id); 876 DEF_FIELD(symval, bcma_device_id, rev); 877 DEF_FIELD(symval, bcma_device_id, class); 878 879 strcpy(alias, "bcma:"); 880 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf); 881 ADD(alias, "id", id != BCMA_ANY_ID, id); 882 ADD(alias, "rev", rev != BCMA_ANY_REV, rev); 883 ADD(alias, "cl", class != BCMA_ANY_CLASS, class); 884 add_wildcard(alias); 885 return 1; 886 } 887 888 /* Looks like: virtio:dNvN */ 889 static int do_virtio_entry(const char *filename, void *symval, 890 char *alias) 891 { 892 DEF_FIELD(symval, virtio_device_id, device); 893 DEF_FIELD(symval, virtio_device_id, vendor); 894 895 strcpy(alias, "virtio:"); 896 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device); 897 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor); 898 899 add_wildcard(alias); 900 return 1; 901 } 902 903 /* 904 * Looks like: vmbus:guid 905 * Each byte of the guid will be represented by two hex characters 906 * in the name. 907 */ 908 909 static int do_vmbus_entry(const char *filename, void *symval, 910 char *alias) 911 { 912 int i; 913 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid); 914 char guid_name[(sizeof(*guid) + 1) * 2]; 915 916 for (i = 0; i < (sizeof(*guid) * 2); i += 2) 917 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2])); 918 919 strcpy(alias, "vmbus:"); 920 strcat(alias, guid_name); 921 922 return 1; 923 } 924 925 /* Looks like: rpmsg:S */ 926 static int do_rpmsg_entry(const char *filename, void *symval, 927 char *alias) 928 { 929 DEF_FIELD_ADDR(symval, rpmsg_device_id, name); 930 sprintf(alias, RPMSG_DEVICE_MODALIAS_FMT, *name); 931 932 return 1; 933 } 934 935 /* Looks like: i2c:S */ 936 static int do_i2c_entry(const char *filename, void *symval, 937 char *alias) 938 { 939 DEF_FIELD_ADDR(symval, i2c_device_id, name); 940 sprintf(alias, I2C_MODULE_PREFIX "%s", *name); 941 942 return 1; 943 } 944 945 static int do_i3c_entry(const char *filename, void *symval, 946 char *alias) 947 { 948 DEF_FIELD(symval, i3c_device_id, match_flags); 949 DEF_FIELD(symval, i3c_device_id, dcr); 950 DEF_FIELD(symval, i3c_device_id, manuf_id); 951 DEF_FIELD(symval, i3c_device_id, part_id); 952 DEF_FIELD(symval, i3c_device_id, extra_info); 953 954 strcpy(alias, "i3c:"); 955 ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr); 956 ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id); 957 ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id); 958 ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info); 959 960 return 1; 961 } 962 963 static int do_slim_entry(const char *filename, void *symval, char *alias) 964 { 965 DEF_FIELD(symval, slim_device_id, manf_id); 966 DEF_FIELD(symval, slim_device_id, prod_code); 967 968 sprintf(alias, "slim:%x:%x:*", manf_id, prod_code); 969 970 return 1; 971 } 972 973 /* Looks like: spi:S */ 974 static int do_spi_entry(const char *filename, void *symval, 975 char *alias) 976 { 977 DEF_FIELD_ADDR(symval, spi_device_id, name); 978 sprintf(alias, SPI_MODULE_PREFIX "%s", *name); 979 980 return 1; 981 } 982 983 static const struct dmifield { 984 const char *prefix; 985 int field; 986 } dmi_fields[] = { 987 { "bvn", DMI_BIOS_VENDOR }, 988 { "bvr", DMI_BIOS_VERSION }, 989 { "bd", DMI_BIOS_DATE }, 990 { "br", DMI_BIOS_RELEASE }, 991 { "efr", DMI_EC_FIRMWARE_RELEASE }, 992 { "svn", DMI_SYS_VENDOR }, 993 { "pn", DMI_PRODUCT_NAME }, 994 { "pvr", DMI_PRODUCT_VERSION }, 995 { "rvn", DMI_BOARD_VENDOR }, 996 { "rn", DMI_BOARD_NAME }, 997 { "rvr", DMI_BOARD_VERSION }, 998 { "cvn", DMI_CHASSIS_VENDOR }, 999 { "ct", DMI_CHASSIS_TYPE }, 1000 { "cvr", DMI_CHASSIS_VERSION }, 1001 { NULL, DMI_NONE } 1002 }; 1003 1004 static void dmi_ascii_filter(char *d, const char *s) 1005 { 1006 /* Filter out characters we don't want to see in the modalias string */ 1007 for (; *s; s++) 1008 if (*s > ' ' && *s < 127 && *s != ':') 1009 *(d++) = *s; 1010 1011 *d = 0; 1012 } 1013 1014 1015 static int do_dmi_entry(const char *filename, void *symval, 1016 char *alias) 1017 { 1018 int i, j; 1019 DEF_FIELD_ADDR(symval, dmi_system_id, matches); 1020 sprintf(alias, "dmi*"); 1021 1022 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) { 1023 for (j = 0; j < 4; j++) { 1024 if ((*matches)[j].slot && 1025 (*matches)[j].slot == dmi_fields[i].field) { 1026 sprintf(alias + strlen(alias), ":%s*", 1027 dmi_fields[i].prefix); 1028 dmi_ascii_filter(alias + strlen(alias), 1029 (*matches)[j].substr); 1030 strcat(alias, "*"); 1031 } 1032 } 1033 } 1034 1035 strcat(alias, ":"); 1036 return 1; 1037 } 1038 1039 static int do_platform_entry(const char *filename, 1040 void *symval, char *alias) 1041 { 1042 DEF_FIELD_ADDR(symval, platform_device_id, name); 1043 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name); 1044 return 1; 1045 } 1046 1047 static int do_mdio_entry(const char *filename, 1048 void *symval, char *alias) 1049 { 1050 int i; 1051 DEF_FIELD(symval, mdio_device_id, phy_id); 1052 DEF_FIELD(symval, mdio_device_id, phy_id_mask); 1053 1054 alias += sprintf(alias, MDIO_MODULE_PREFIX); 1055 1056 for (i = 0; i < 32; i++) { 1057 if (!((phy_id_mask >> (31-i)) & 1)) 1058 *(alias++) = '?'; 1059 else if ((phy_id >> (31-i)) & 1) 1060 *(alias++) = '1'; 1061 else 1062 *(alias++) = '0'; 1063 } 1064 1065 /* Terminate the string */ 1066 *alias = 0; 1067 1068 return 1; 1069 } 1070 1071 /* Looks like: zorro:iN. */ 1072 static int do_zorro_entry(const char *filename, void *symval, 1073 char *alias) 1074 { 1075 DEF_FIELD(symval, zorro_device_id, id); 1076 strcpy(alias, "zorro:"); 1077 ADD(alias, "i", id != ZORRO_WILDCARD, id); 1078 return 1; 1079 } 1080 1081 /* looks like: "pnp:dD" */ 1082 static int do_isapnp_entry(const char *filename, 1083 void *symval, char *alias) 1084 { 1085 DEF_FIELD(symval, isapnp_device_id, vendor); 1086 DEF_FIELD(symval, isapnp_device_id, function); 1087 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*", 1088 'A' + ((vendor >> 2) & 0x3f) - 1, 1089 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1, 1090 'A' + ((vendor >> 8) & 0x1f) - 1, 1091 (function >> 4) & 0x0f, function & 0x0f, 1092 (function >> 12) & 0x0f, (function >> 8) & 0x0f); 1093 return 1; 1094 } 1095 1096 /* Looks like: "ipack:fNvNdN". */ 1097 static int do_ipack_entry(const char *filename, 1098 void *symval, char *alias) 1099 { 1100 DEF_FIELD(symval, ipack_device_id, format); 1101 DEF_FIELD(symval, ipack_device_id, vendor); 1102 DEF_FIELD(symval, ipack_device_id, device); 1103 strcpy(alias, "ipack:"); 1104 ADD(alias, "f", format != IPACK_ANY_FORMAT, format); 1105 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor); 1106 ADD(alias, "d", device != IPACK_ANY_ID, device); 1107 add_wildcard(alias); 1108 return 1; 1109 } 1110 1111 /* 1112 * Append a match expression for a single masked hex digit. 1113 * outp points to a pointer to the character at which to append. 1114 * *outp is updated on return to point just after the appended text, 1115 * to facilitate further appending. 1116 */ 1117 static void append_nibble_mask(char **outp, 1118 unsigned int nibble, unsigned int mask) 1119 { 1120 char *p = *outp; 1121 unsigned int i; 1122 1123 switch (mask) { 1124 case 0: 1125 *p++ = '?'; 1126 break; 1127 1128 case 0xf: 1129 p += sprintf(p, "%X", nibble); 1130 break; 1131 1132 default: 1133 /* 1134 * Dumbly emit a match pattern for all possible matching 1135 * digits. This could be improved in some cases using ranges, 1136 * but it has the advantage of being trivially correct, and is 1137 * often optimal. 1138 */ 1139 *p++ = '['; 1140 for (i = 0; i < 0x10; i++) 1141 if ((i & mask) == nibble) 1142 p += sprintf(p, "%X", i); 1143 *p++ = ']'; 1144 } 1145 1146 /* Ensure that the string remains NUL-terminated: */ 1147 *p = '\0'; 1148 1149 /* Advance the caller's end-of-string pointer: */ 1150 *outp = p; 1151 } 1152 1153 /* 1154 * looks like: "amba:dN" 1155 * 1156 * N is exactly 8 digits, where each is an upper-case hex digit, or 1157 * a ? or [] pattern matching exactly one digit. 1158 */ 1159 static int do_amba_entry(const char *filename, 1160 void *symval, char *alias) 1161 { 1162 unsigned int digit; 1163 char *p = alias; 1164 DEF_FIELD(symval, amba_id, id); 1165 DEF_FIELD(symval, amba_id, mask); 1166 1167 if ((id & mask) != id) 1168 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: id=0x%08X, mask=0x%08X. Please fix this driver.\n", 1169 filename, id, mask); 1170 1171 p += sprintf(alias, "amba:d"); 1172 for (digit = 0; digit < 8; digit++) 1173 append_nibble_mask(&p, 1174 (id >> (4 * (7 - digit))) & 0xf, 1175 (mask >> (4 * (7 - digit))) & 0xf); 1176 1177 return 1; 1178 } 1179 1180 /* 1181 * looks like: "mipscdmm:tN" 1182 * 1183 * N is exactly 2 digits, where each is an upper-case hex digit, or 1184 * a ? or [] pattern matching exactly one digit. 1185 */ 1186 static int do_mips_cdmm_entry(const char *filename, 1187 void *symval, char *alias) 1188 { 1189 DEF_FIELD(symval, mips_cdmm_device_id, type); 1190 1191 sprintf(alias, "mipscdmm:t%02X*", type); 1192 return 1; 1193 } 1194 1195 /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,* 1196 * All fields are numbers. It would be nicer to use strings for vendor 1197 * and feature, but getting those out of the build system here is too 1198 * complicated. 1199 */ 1200 1201 static int do_x86cpu_entry(const char *filename, void *symval, 1202 char *alias) 1203 { 1204 DEF_FIELD(symval, x86_cpu_id, feature); 1205 DEF_FIELD(symval, x86_cpu_id, family); 1206 DEF_FIELD(symval, x86_cpu_id, model); 1207 DEF_FIELD(symval, x86_cpu_id, vendor); 1208 1209 strcpy(alias, "cpu:type:x86,"); 1210 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor); 1211 ADD(alias, "fam", family != X86_FAMILY_ANY, family); 1212 ADD(alias, "mod", model != X86_MODEL_ANY, model); 1213 strcat(alias, ":feature:*"); 1214 if (feature != X86_FEATURE_ANY) 1215 sprintf(alias + strlen(alias), "%04X*", feature); 1216 return 1; 1217 } 1218 1219 /* LOOKS like cpu:type:*:feature:*FEAT* */ 1220 static int do_cpu_entry(const char *filename, void *symval, char *alias) 1221 { 1222 DEF_FIELD(symval, cpu_feature, feature); 1223 1224 sprintf(alias, "cpu:type:*:feature:*%04X*", feature); 1225 return 1; 1226 } 1227 1228 /* Looks like: mei:S:uuid:N:* */ 1229 static int do_mei_entry(const char *filename, void *symval, 1230 char *alias) 1231 { 1232 DEF_FIELD_ADDR(symval, mei_cl_device_id, name); 1233 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid); 1234 DEF_FIELD(symval, mei_cl_device_id, version); 1235 1236 sprintf(alias, MEI_CL_MODULE_PREFIX); 1237 sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*"); 1238 add_uuid(alias, *uuid); 1239 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version); 1240 1241 strcat(alias, ":*"); 1242 1243 return 1; 1244 } 1245 1246 /* Looks like: rapidio:vNdNavNadN */ 1247 static int do_rio_entry(const char *filename, 1248 void *symval, char *alias) 1249 { 1250 DEF_FIELD(symval, rio_device_id, did); 1251 DEF_FIELD(symval, rio_device_id, vid); 1252 DEF_FIELD(symval, rio_device_id, asm_did); 1253 DEF_FIELD(symval, rio_device_id, asm_vid); 1254 1255 strcpy(alias, "rapidio:"); 1256 ADD(alias, "v", vid != RIO_ANY_ID, vid); 1257 ADD(alias, "d", did != RIO_ANY_ID, did); 1258 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid); 1259 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did); 1260 1261 add_wildcard(alias); 1262 return 1; 1263 } 1264 1265 /* Looks like: ulpi:vNpN */ 1266 static int do_ulpi_entry(const char *filename, void *symval, 1267 char *alias) 1268 { 1269 DEF_FIELD(symval, ulpi_device_id, vendor); 1270 DEF_FIELD(symval, ulpi_device_id, product); 1271 1272 sprintf(alias, "ulpi:v%04xp%04x", vendor, product); 1273 1274 return 1; 1275 } 1276 1277 /* Looks like: hdaudio:vNrNaN */ 1278 static int do_hda_entry(const char *filename, void *symval, char *alias) 1279 { 1280 DEF_FIELD(symval, hda_device_id, vendor_id); 1281 DEF_FIELD(symval, hda_device_id, rev_id); 1282 DEF_FIELD(symval, hda_device_id, api_version); 1283 1284 strcpy(alias, "hdaudio:"); 1285 ADD(alias, "v", vendor_id != 0, vendor_id); 1286 ADD(alias, "r", rev_id != 0, rev_id); 1287 ADD(alias, "a", api_version != 0, api_version); 1288 1289 add_wildcard(alias); 1290 return 1; 1291 } 1292 1293 /* Looks like: sdw:mNpNvNcN */ 1294 static int do_sdw_entry(const char *filename, void *symval, char *alias) 1295 { 1296 DEF_FIELD(symval, sdw_device_id, mfg_id); 1297 DEF_FIELD(symval, sdw_device_id, part_id); 1298 DEF_FIELD(symval, sdw_device_id, sdw_version); 1299 DEF_FIELD(symval, sdw_device_id, class_id); 1300 1301 strcpy(alias, "sdw:"); 1302 ADD(alias, "m", mfg_id != 0, mfg_id); 1303 ADD(alias, "p", part_id != 0, part_id); 1304 ADD(alias, "v", sdw_version != 0, sdw_version); 1305 ADD(alias, "c", class_id != 0, class_id); 1306 1307 add_wildcard(alias); 1308 return 1; 1309 } 1310 1311 /* Looks like: fsl-mc:vNdN */ 1312 static int do_fsl_mc_entry(const char *filename, void *symval, 1313 char *alias) 1314 { 1315 DEF_FIELD(symval, fsl_mc_device_id, vendor); 1316 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type); 1317 1318 sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type); 1319 return 1; 1320 } 1321 1322 /* Looks like: tbsvc:kSpNvNrN */ 1323 static int do_tbsvc_entry(const char *filename, void *symval, char *alias) 1324 { 1325 DEF_FIELD(symval, tb_service_id, match_flags); 1326 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key); 1327 DEF_FIELD(symval, tb_service_id, protocol_id); 1328 DEF_FIELD(symval, tb_service_id, protocol_version); 1329 DEF_FIELD(symval, tb_service_id, protocol_revision); 1330 1331 strcpy(alias, "tbsvc:"); 1332 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY) 1333 sprintf(alias + strlen(alias), "k%s", *protocol_key); 1334 else 1335 strcat(alias + strlen(alias), "k*"); 1336 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id); 1337 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION, 1338 protocol_version); 1339 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION, 1340 protocol_revision); 1341 1342 add_wildcard(alias); 1343 return 1; 1344 } 1345 1346 /* Looks like: typec:idNmN */ 1347 static int do_typec_entry(const char *filename, void *symval, char *alias) 1348 { 1349 DEF_FIELD(symval, typec_device_id, svid); 1350 DEF_FIELD(symval, typec_device_id, mode); 1351 1352 sprintf(alias, "typec:id%04X", svid); 1353 ADD(alias, "m", mode != TYPEC_ANY_MODE, mode); 1354 1355 return 1; 1356 } 1357 1358 /* Looks like: tee:uuid */ 1359 static int do_tee_entry(const char *filename, void *symval, char *alias) 1360 { 1361 DEF_FIELD_ADDR(symval, tee_client_device_id, uuid); 1362 1363 sprintf(alias, "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", 1364 uuid->b[0], uuid->b[1], uuid->b[2], uuid->b[3], uuid->b[4], 1365 uuid->b[5], uuid->b[6], uuid->b[7], uuid->b[8], uuid->b[9], 1366 uuid->b[10], uuid->b[11], uuid->b[12], uuid->b[13], uuid->b[14], 1367 uuid->b[15]); 1368 1369 add_wildcard(alias); 1370 return 1; 1371 } 1372 1373 /* Looks like: wmi:guid */ 1374 static int do_wmi_entry(const char *filename, void *symval, char *alias) 1375 { 1376 int len; 1377 DEF_FIELD_ADDR(symval, wmi_device_id, guid_string); 1378 1379 if (strlen(*guid_string) != UUID_STRING_LEN) { 1380 warn("Invalid WMI device id 'wmi:%s' in '%s'\n", 1381 *guid_string, filename); 1382 return 0; 1383 } 1384 1385 len = snprintf(alias, ALIAS_SIZE, WMI_MODULE_PREFIX "%s", *guid_string); 1386 if (len < 0 || len >= ALIAS_SIZE) { 1387 warn("Could not generate all MODULE_ALIAS's in '%s'\n", 1388 filename); 1389 return 0; 1390 } 1391 return 1; 1392 } 1393 1394 /* Looks like: mhi:S */ 1395 static int do_mhi_entry(const char *filename, void *symval, char *alias) 1396 { 1397 DEF_FIELD_ADDR(symval, mhi_device_id, chan); 1398 sprintf(alias, MHI_DEVICE_MODALIAS_FMT, *chan); 1399 return 1; 1400 } 1401 1402 /* Looks like: mhi_ep:S */ 1403 static int do_mhi_ep_entry(const char *filename, void *symval, char *alias) 1404 { 1405 DEF_FIELD_ADDR(symval, mhi_device_id, chan); 1406 sprintf(alias, MHI_EP_DEVICE_MODALIAS_FMT, *chan); 1407 1408 return 1; 1409 } 1410 1411 /* Looks like: ishtp:{guid} */ 1412 static int do_ishtp_entry(const char *filename, void *symval, char *alias) 1413 { 1414 DEF_FIELD_ADDR(symval, ishtp_device_id, guid); 1415 1416 strcpy(alias, ISHTP_MODULE_PREFIX "{"); 1417 add_guid(alias, *guid); 1418 strcat(alias, "}"); 1419 1420 return 1; 1421 } 1422 1423 static int do_auxiliary_entry(const char *filename, void *symval, char *alias) 1424 { 1425 DEF_FIELD_ADDR(symval, auxiliary_device_id, name); 1426 sprintf(alias, AUXILIARY_MODULE_PREFIX "%s", *name); 1427 1428 return 1; 1429 } 1430 1431 /* 1432 * Looks like: ssam:dNcNtNiNfN 1433 * 1434 * N is exactly 2 digits, where each is an upper-case hex digit. 1435 */ 1436 static int do_ssam_entry(const char *filename, void *symval, char *alias) 1437 { 1438 DEF_FIELD(symval, ssam_device_id, match_flags); 1439 DEF_FIELD(symval, ssam_device_id, domain); 1440 DEF_FIELD(symval, ssam_device_id, category); 1441 DEF_FIELD(symval, ssam_device_id, target); 1442 DEF_FIELD(symval, ssam_device_id, instance); 1443 DEF_FIELD(symval, ssam_device_id, function); 1444 1445 sprintf(alias, "ssam:d%02Xc%02X", domain, category); 1446 ADD(alias, "t", match_flags & SSAM_MATCH_TARGET, target); 1447 ADD(alias, "i", match_flags & SSAM_MATCH_INSTANCE, instance); 1448 ADD(alias, "f", match_flags & SSAM_MATCH_FUNCTION, function); 1449 1450 return 1; 1451 } 1452 1453 /* Looks like: dfl:tNfN */ 1454 static int do_dfl_entry(const char *filename, void *symval, char *alias) 1455 { 1456 DEF_FIELD(symval, dfl_device_id, type); 1457 DEF_FIELD(symval, dfl_device_id, feature_id); 1458 1459 sprintf(alias, "dfl:t%04Xf%04X", type, feature_id); 1460 1461 add_wildcard(alias); 1462 return 1; 1463 } 1464 1465 /* Looks like: cdx:vNdN */ 1466 static int do_cdx_entry(const char *filename, void *symval, 1467 char *alias) 1468 { 1469 DEF_FIELD(symval, cdx_device_id, vendor); 1470 DEF_FIELD(symval, cdx_device_id, device); 1471 DEF_FIELD(symval, cdx_device_id, subvendor); 1472 DEF_FIELD(symval, cdx_device_id, subdevice); 1473 DEF_FIELD(symval, cdx_device_id, class); 1474 DEF_FIELD(symval, cdx_device_id, class_mask); 1475 DEF_FIELD(symval, cdx_device_id, override_only); 1476 1477 switch (override_only) { 1478 case 0: 1479 strcpy(alias, "cdx:"); 1480 break; 1481 case CDX_ID_F_VFIO_DRIVER_OVERRIDE: 1482 strcpy(alias, "vfio_cdx:"); 1483 break; 1484 default: 1485 warn("Unknown CDX driver_override alias %08X\n", 1486 override_only); 1487 return 0; 1488 } 1489 1490 ADD(alias, "v", vendor != CDX_ANY_ID, vendor); 1491 ADD(alias, "d", device != CDX_ANY_ID, device); 1492 ADD(alias, "sv", subvendor != CDX_ANY_ID, subvendor); 1493 ADD(alias, "sd", subdevice != CDX_ANY_ID, subdevice); 1494 ADD(alias, "c", class_mask == 0xFFFFFF, class); 1495 1496 return 1; 1497 } 1498 1499 static int do_vchiq_entry(const char *filename, void *symval, char *alias) 1500 { 1501 DEF_FIELD_ADDR(symval, vchiq_device_id, name); 1502 sprintf(alias, "vchiq:%s", *name); 1503 1504 return 1; 1505 } 1506 1507 /* Looks like: coreboot:tN */ 1508 static int do_coreboot_entry(const char *filename, void *symval, char *alias) 1509 { 1510 DEF_FIELD(symval, coreboot_device_id, tag); 1511 sprintf(alias, "coreboot:t%08X", tag); 1512 1513 return 1; 1514 } 1515 1516 /* Does namelen bytes of name exactly match the symbol? */ 1517 static bool sym_is(const char *name, unsigned namelen, const char *symbol) 1518 { 1519 if (namelen != strlen(symbol)) 1520 return false; 1521 1522 return memcmp(name, symbol, namelen) == 0; 1523 } 1524 1525 static void do_table(void *symval, unsigned long size, 1526 unsigned long id_size, 1527 const char *device_id, 1528 int (*do_entry)(const char *filename, void *symval, char *alias), 1529 struct module *mod) 1530 { 1531 unsigned int i; 1532 char alias[ALIAS_SIZE]; 1533 1534 device_id_check(mod->name, device_id, size, id_size, symval); 1535 /* Leave last one: it's the terminator. */ 1536 size -= id_size; 1537 1538 for (i = 0; i < size; i += id_size) { 1539 if (do_entry(mod->name, symval+i, alias)) { 1540 buf_printf(&mod->dev_table_buf, 1541 "MODULE_ALIAS(\"%s\");\n", alias); 1542 } 1543 } 1544 } 1545 1546 static const struct devtable devtable[] = { 1547 {"hid", SIZE_hid_device_id, do_hid_entry}, 1548 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry}, 1549 {"pci", SIZE_pci_device_id, do_pci_entry}, 1550 {"ccw", SIZE_ccw_device_id, do_ccw_entry}, 1551 {"ap", SIZE_ap_device_id, do_ap_entry}, 1552 {"css", SIZE_css_device_id, do_css_entry}, 1553 {"serio", SIZE_serio_device_id, do_serio_entry}, 1554 {"acpi", SIZE_acpi_device_id, do_acpi_entry}, 1555 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry}, 1556 {"vio", SIZE_vio_device_id, do_vio_entry}, 1557 {"input", SIZE_input_device_id, do_input_entry}, 1558 {"eisa", SIZE_eisa_device_id, do_eisa_entry}, 1559 {"parisc", SIZE_parisc_device_id, do_parisc_entry}, 1560 {"sdio", SIZE_sdio_device_id, do_sdio_entry}, 1561 {"ssb", SIZE_ssb_device_id, do_ssb_entry}, 1562 {"bcma", SIZE_bcma_device_id, do_bcma_entry}, 1563 {"virtio", SIZE_virtio_device_id, do_virtio_entry}, 1564 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry}, 1565 {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry}, 1566 {"i2c", SIZE_i2c_device_id, do_i2c_entry}, 1567 {"i3c", SIZE_i3c_device_id, do_i3c_entry}, 1568 {"slim", SIZE_slim_device_id, do_slim_entry}, 1569 {"spi", SIZE_spi_device_id, do_spi_entry}, 1570 {"dmi", SIZE_dmi_system_id, do_dmi_entry}, 1571 {"platform", SIZE_platform_device_id, do_platform_entry}, 1572 {"mdio", SIZE_mdio_device_id, do_mdio_entry}, 1573 {"zorro", SIZE_zorro_device_id, do_zorro_entry}, 1574 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry}, 1575 {"ipack", SIZE_ipack_device_id, do_ipack_entry}, 1576 {"amba", SIZE_amba_id, do_amba_entry}, 1577 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry}, 1578 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry}, 1579 {"cpu", SIZE_cpu_feature, do_cpu_entry}, 1580 {"mei", SIZE_mei_cl_device_id, do_mei_entry}, 1581 {"rapidio", SIZE_rio_device_id, do_rio_entry}, 1582 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry}, 1583 {"hdaudio", SIZE_hda_device_id, do_hda_entry}, 1584 {"sdw", SIZE_sdw_device_id, do_sdw_entry}, 1585 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry}, 1586 {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry}, 1587 {"typec", SIZE_typec_device_id, do_typec_entry}, 1588 {"tee", SIZE_tee_client_device_id, do_tee_entry}, 1589 {"wmi", SIZE_wmi_device_id, do_wmi_entry}, 1590 {"mhi", SIZE_mhi_device_id, do_mhi_entry}, 1591 {"mhi_ep", SIZE_mhi_device_id, do_mhi_ep_entry}, 1592 {"auxiliary", SIZE_auxiliary_device_id, do_auxiliary_entry}, 1593 {"ssam", SIZE_ssam_device_id, do_ssam_entry}, 1594 {"dfl", SIZE_dfl_device_id, do_dfl_entry}, 1595 {"ishtp", SIZE_ishtp_device_id, do_ishtp_entry}, 1596 {"cdx", SIZE_cdx_device_id, do_cdx_entry}, 1597 {"vchiq", SIZE_vchiq_device_id, do_vchiq_entry}, 1598 {"coreboot", SIZE_coreboot_device_id, do_coreboot_entry}, 1599 }; 1600 1601 /* Create MODULE_ALIAS() statements. 1602 * At this time, we cannot write the actual output C source yet, 1603 * so we write into the mod->dev_table_buf buffer. */ 1604 void handle_moddevtable(struct module *mod, struct elf_info *info, 1605 Elf_Sym *sym, const char *symname) 1606 { 1607 void *symval; 1608 char *zeros = NULL; 1609 const char *name, *identifier; 1610 unsigned int namelen; 1611 1612 /* We're looking for a section relative symbol */ 1613 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections) 1614 return; 1615 1616 /* We're looking for an object */ 1617 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT) 1618 return; 1619 1620 /* All our symbols are of form __mod_<name>__<identifier>_device_table. */ 1621 if (strncmp(symname, "__mod_", strlen("__mod_"))) 1622 return; 1623 name = symname + strlen("__mod_"); 1624 namelen = strlen(name); 1625 if (namelen < strlen("_device_table")) 1626 return; 1627 if (strcmp(name + namelen - strlen("_device_table"), "_device_table")) 1628 return; 1629 identifier = strstr(name, "__"); 1630 if (!identifier) 1631 return; 1632 namelen = identifier - name; 1633 1634 /* Handle all-NULL symbols allocated into .bss */ 1635 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) { 1636 zeros = calloc(1, sym->st_size); 1637 symval = zeros; 1638 } else { 1639 symval = sym_get_data(info, sym); 1640 } 1641 1642 /* First handle the "special" cases */ 1643 if (sym_is(name, namelen, "usb")) 1644 do_usb_table(symval, sym->st_size, mod); 1645 else if (sym_is(name, namelen, "of")) 1646 do_of_table(symval, sym->st_size, mod); 1647 else if (sym_is(name, namelen, "pnp")) 1648 do_pnp_device_entry(symval, sym->st_size, mod); 1649 else if (sym_is(name, namelen, "pnp_card")) 1650 do_pnp_card_entries(symval, sym->st_size, mod); 1651 else { 1652 int i; 1653 1654 for (i = 0; i < ARRAY_SIZE(devtable); i++) { 1655 const struct devtable *p = &devtable[i]; 1656 1657 if (sym_is(name, namelen, p->device_id)) { 1658 do_table(symval, sym->st_size, p->id_size, 1659 p->device_id, p->do_entry, mod); 1660 break; 1661 } 1662 } 1663 } 1664 free(zeros); 1665 } 1666 1667 /* Now add out buffered information to the generated C source */ 1668 void add_moddevtable(struct buffer *buf, struct module *mod) 1669 { 1670 buf_printf(buf, "\n"); 1671 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos); 1672 free(mod->dev_table_buf.p); 1673 } 1674