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