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 or <prefix>_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 DEF_FIELD(symval, pci_device_id, override_only); 444 445 switch (override_only) { 446 case 0: 447 strcpy(alias, "pci:"); 448 break; 449 case PCI_ID_F_VFIO_DRIVER_OVERRIDE: 450 strcpy(alias, "vfio_pci:"); 451 break; 452 default: 453 warn("Unknown PCI driver_override alias %08X\n", 454 override_only); 455 return 0; 456 } 457 458 ADD(alias, "v", vendor != PCI_ANY_ID, vendor); 459 ADD(alias, "d", device != PCI_ANY_ID, device); 460 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor); 461 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice); 462 463 baseclass = (class) >> 16; 464 baseclass_mask = (class_mask) >> 16; 465 subclass = (class) >> 8; 466 subclass_mask = (class_mask) >> 8; 467 interface = class; 468 interface_mask = class_mask; 469 470 if ((baseclass_mask != 0 && baseclass_mask != 0xFF) 471 || (subclass_mask != 0 && subclass_mask != 0xFF) 472 || (interface_mask != 0 && interface_mask != 0xFF)) { 473 warn("Can't handle masks in %s:%04X\n", 474 filename, class_mask); 475 return 0; 476 } 477 478 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass); 479 ADD(alias, "sc", subclass_mask == 0xFF, subclass); 480 ADD(alias, "i", interface_mask == 0xFF, interface); 481 add_wildcard(alias); 482 return 1; 483 } 484 485 /* looks like: "ccw:tNmNdtNdmN" */ 486 static int do_ccw_entry(const char *filename, 487 void *symval, char *alias) 488 { 489 DEF_FIELD(symval, ccw_device_id, match_flags); 490 DEF_FIELD(symval, ccw_device_id, cu_type); 491 DEF_FIELD(symval, ccw_device_id, cu_model); 492 DEF_FIELD(symval, ccw_device_id, dev_type); 493 DEF_FIELD(symval, ccw_device_id, dev_model); 494 495 strcpy(alias, "ccw:"); 496 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE, 497 cu_type); 498 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL, 499 cu_model); 500 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE, 501 dev_type); 502 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL, 503 dev_model); 504 add_wildcard(alias); 505 return 1; 506 } 507 508 /* looks like: "ap:tN" */ 509 static int do_ap_entry(const char *filename, 510 void *symval, char *alias) 511 { 512 DEF_FIELD(symval, ap_device_id, dev_type); 513 514 sprintf(alias, "ap:t%02X*", dev_type); 515 return 1; 516 } 517 518 /* looks like: "css:tN" */ 519 static int do_css_entry(const char *filename, 520 void *symval, char *alias) 521 { 522 DEF_FIELD(symval, css_device_id, type); 523 524 sprintf(alias, "css:t%01X", type); 525 return 1; 526 } 527 528 /* Looks like: "serio:tyNprNidNexN" */ 529 static int do_serio_entry(const char *filename, 530 void *symval, char *alias) 531 { 532 DEF_FIELD(symval, serio_device_id, type); 533 DEF_FIELD(symval, serio_device_id, proto); 534 DEF_FIELD(symval, serio_device_id, id); 535 DEF_FIELD(symval, serio_device_id, extra); 536 537 strcpy(alias, "serio:"); 538 ADD(alias, "ty", type != SERIO_ANY, type); 539 ADD(alias, "pr", proto != SERIO_ANY, proto); 540 ADD(alias, "id", id != SERIO_ANY, id); 541 ADD(alias, "ex", extra != SERIO_ANY, extra); 542 543 add_wildcard(alias); 544 return 1; 545 } 546 547 /* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or 548 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if) 549 * 550 * NOTE: Each driver should use one of the following : _HID, _CIDs 551 * or _CLS. Also, bb, ss, and pp can be substituted with ?? 552 * as don't care byte. 553 */ 554 static int do_acpi_entry(const char *filename, 555 void *symval, char *alias) 556 { 557 DEF_FIELD_ADDR(symval, acpi_device_id, id); 558 DEF_FIELD_ADDR(symval, acpi_device_id, cls); 559 DEF_FIELD_ADDR(symval, acpi_device_id, cls_msk); 560 561 if (id && strlen((const char *)*id)) 562 sprintf(alias, "acpi*:%s:*", *id); 563 else if (cls) { 564 int i, byte_shift, cnt = 0; 565 unsigned int msk; 566 567 sprintf(&alias[cnt], "acpi*:"); 568 cnt = 6; 569 for (i = 1; i <= 3; i++) { 570 byte_shift = 8 * (3-i); 571 msk = (*cls_msk >> byte_shift) & 0xFF; 572 if (msk) 573 sprintf(&alias[cnt], "%02x", 574 (*cls >> byte_shift) & 0xFF); 575 else 576 sprintf(&alias[cnt], "??"); 577 cnt += 2; 578 } 579 sprintf(&alias[cnt], ":*"); 580 } 581 return 1; 582 } 583 584 /* looks like: "pnp:dD" */ 585 static void do_pnp_device_entry(void *symval, unsigned long size, 586 struct module *mod) 587 { 588 const unsigned long id_size = SIZE_pnp_device_id; 589 const unsigned int count = (size / id_size)-1; 590 unsigned int i; 591 592 device_id_check(mod->name, "pnp", size, id_size, symval); 593 594 for (i = 0; i < count; i++) { 595 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id); 596 char acpi_id[sizeof(*id)]; 597 int j; 598 599 buf_printf(&mod->dev_table_buf, 600 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id); 601 602 /* fix broken pnp bus lowercasing */ 603 for (j = 0; j < sizeof(acpi_id); j++) 604 acpi_id[j] = toupper((*id)[j]); 605 buf_printf(&mod->dev_table_buf, 606 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id); 607 } 608 } 609 610 /* looks like: "pnp:dD" for every device of the card */ 611 static void do_pnp_card_entries(void *symval, unsigned long size, 612 struct module *mod) 613 { 614 const unsigned long id_size = SIZE_pnp_card_device_id; 615 const unsigned int count = (size / id_size)-1; 616 unsigned int i; 617 618 device_id_check(mod->name, "pnp", size, id_size, symval); 619 620 for (i = 0; i < count; i++) { 621 unsigned int j; 622 DEF_FIELD_ADDR(symval + i * id_size, pnp_card_device_id, devs); 623 624 for (j = 0; j < PNP_MAX_DEVICES; j++) { 625 const char *id = (char *)(*devs)[j].id; 626 int i2, j2; 627 int dup = 0; 628 629 if (!id[0]) 630 break; 631 632 /* find duplicate, already added value */ 633 for (i2 = 0; i2 < i && !dup; i2++) { 634 DEF_FIELD_ADDR_VAR(symval + i2 * id_size, 635 pnp_card_device_id, 636 devs, devs_dup); 637 638 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) { 639 const char *id2 = 640 (char *)(*devs_dup)[j2].id; 641 642 if (!id2[0]) 643 break; 644 645 if (!strcmp(id, id2)) { 646 dup = 1; 647 break; 648 } 649 } 650 } 651 652 /* add an individual alias for every device entry */ 653 if (!dup) { 654 char acpi_id[PNP_ID_LEN]; 655 int k; 656 657 buf_printf(&mod->dev_table_buf, 658 "MODULE_ALIAS(\"pnp:d%s*\");\n", id); 659 660 /* fix broken pnp bus lowercasing */ 661 for (k = 0; k < sizeof(acpi_id); k++) 662 acpi_id[k] = toupper(id[k]); 663 buf_printf(&mod->dev_table_buf, 664 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id); 665 } 666 } 667 } 668 } 669 670 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */ 671 static int do_pcmcia_entry(const char *filename, 672 void *symval, char *alias) 673 { 674 unsigned int i; 675 DEF_FIELD(symval, pcmcia_device_id, match_flags); 676 DEF_FIELD(symval, pcmcia_device_id, manf_id); 677 DEF_FIELD(symval, pcmcia_device_id, card_id); 678 DEF_FIELD(symval, pcmcia_device_id, func_id); 679 DEF_FIELD(symval, pcmcia_device_id, function); 680 DEF_FIELD(symval, pcmcia_device_id, device_no); 681 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash); 682 683 for (i=0; i<4; i++) { 684 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]); 685 } 686 687 strcpy(alias, "pcmcia:"); 688 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID, 689 manf_id); 690 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID, 691 card_id); 692 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID, 693 func_id); 694 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION, 695 function); 696 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO, 697 device_no); 698 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]); 699 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]); 700 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]); 701 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]); 702 703 add_wildcard(alias); 704 return 1; 705 } 706 707 static int do_vio_entry(const char *filename, void *symval, 708 char *alias) 709 { 710 char *tmp; 711 DEF_FIELD_ADDR(symval, vio_device_id, type); 712 DEF_FIELD_ADDR(symval, vio_device_id, compat); 713 714 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*", 715 (*compat)[0] ? *compat : "*"); 716 717 /* Replace all whitespace with underscores */ 718 for (tmp = alias; tmp && *tmp; tmp++) 719 if (isspace (*tmp)) 720 *tmp = '_'; 721 722 add_wildcard(alias); 723 return 1; 724 } 725 726 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 727 728 static void do_input(char *alias, 729 kernel_ulong_t *arr, unsigned int min, unsigned int max) 730 { 731 unsigned int i; 732 733 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++) 734 arr[i] = TO_NATIVE(arr[i]); 735 for (i = min; i < max; i++) 736 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG))) 737 sprintf(alias + strlen(alias), "%X,*", i); 738 } 739 740 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */ 741 static int do_input_entry(const char *filename, void *symval, 742 char *alias) 743 { 744 DEF_FIELD(symval, input_device_id, flags); 745 DEF_FIELD(symval, input_device_id, bustype); 746 DEF_FIELD(symval, input_device_id, vendor); 747 DEF_FIELD(symval, input_device_id, product); 748 DEF_FIELD(symval, input_device_id, version); 749 DEF_FIELD_ADDR(symval, input_device_id, evbit); 750 DEF_FIELD_ADDR(symval, input_device_id, keybit); 751 DEF_FIELD_ADDR(symval, input_device_id, relbit); 752 DEF_FIELD_ADDR(symval, input_device_id, absbit); 753 DEF_FIELD_ADDR(symval, input_device_id, mscbit); 754 DEF_FIELD_ADDR(symval, input_device_id, ledbit); 755 DEF_FIELD_ADDR(symval, input_device_id, sndbit); 756 DEF_FIELD_ADDR(symval, input_device_id, ffbit); 757 DEF_FIELD_ADDR(symval, input_device_id, swbit); 758 759 sprintf(alias, "input:"); 760 761 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype); 762 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor); 763 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product); 764 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version); 765 766 sprintf(alias + strlen(alias), "-e*"); 767 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT) 768 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX); 769 sprintf(alias + strlen(alias), "k*"); 770 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT) 771 do_input(alias, *keybit, 772 INPUT_DEVICE_ID_KEY_MIN_INTERESTING, 773 INPUT_DEVICE_ID_KEY_MAX); 774 sprintf(alias + strlen(alias), "r*"); 775 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT) 776 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX); 777 sprintf(alias + strlen(alias), "a*"); 778 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT) 779 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX); 780 sprintf(alias + strlen(alias), "m*"); 781 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT) 782 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX); 783 sprintf(alias + strlen(alias), "l*"); 784 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT) 785 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX); 786 sprintf(alias + strlen(alias), "s*"); 787 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT) 788 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX); 789 sprintf(alias + strlen(alias), "f*"); 790 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT) 791 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX); 792 sprintf(alias + strlen(alias), "w*"); 793 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT) 794 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX); 795 return 1; 796 } 797 798 static int do_eisa_entry(const char *filename, void *symval, 799 char *alias) 800 { 801 DEF_FIELD_ADDR(symval, eisa_device_id, sig); 802 if (sig[0]) 803 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig); 804 else 805 strcat(alias, "*"); 806 return 1; 807 } 808 809 /* Looks like: parisc:tNhvNrevNsvN */ 810 static int do_parisc_entry(const char *filename, void *symval, 811 char *alias) 812 { 813 DEF_FIELD(symval, parisc_device_id, hw_type); 814 DEF_FIELD(symval, parisc_device_id, hversion); 815 DEF_FIELD(symval, parisc_device_id, hversion_rev); 816 DEF_FIELD(symval, parisc_device_id, sversion); 817 818 strcpy(alias, "parisc:"); 819 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type); 820 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion); 821 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev); 822 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion); 823 824 add_wildcard(alias); 825 return 1; 826 } 827 828 /* Looks like: sdio:cNvNdN. */ 829 static int do_sdio_entry(const char *filename, 830 void *symval, char *alias) 831 { 832 DEF_FIELD(symval, sdio_device_id, class); 833 DEF_FIELD(symval, sdio_device_id, vendor); 834 DEF_FIELD(symval, sdio_device_id, device); 835 836 strcpy(alias, "sdio:"); 837 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class); 838 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor); 839 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device); 840 add_wildcard(alias); 841 return 1; 842 } 843 844 /* Looks like: ssb:vNidNrevN. */ 845 static int do_ssb_entry(const char *filename, 846 void *symval, char *alias) 847 { 848 DEF_FIELD(symval, ssb_device_id, vendor); 849 DEF_FIELD(symval, ssb_device_id, coreid); 850 DEF_FIELD(symval, ssb_device_id, revision); 851 852 strcpy(alias, "ssb:"); 853 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor); 854 ADD(alias, "id", coreid != SSB_ANY_ID, coreid); 855 ADD(alias, "rev", revision != SSB_ANY_REV, revision); 856 add_wildcard(alias); 857 return 1; 858 } 859 860 /* Looks like: bcma:mNidNrevNclN. */ 861 static int do_bcma_entry(const char *filename, 862 void *symval, char *alias) 863 { 864 DEF_FIELD(symval, bcma_device_id, manuf); 865 DEF_FIELD(symval, bcma_device_id, id); 866 DEF_FIELD(symval, bcma_device_id, rev); 867 DEF_FIELD(symval, bcma_device_id, class); 868 869 strcpy(alias, "bcma:"); 870 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf); 871 ADD(alias, "id", id != BCMA_ANY_ID, id); 872 ADD(alias, "rev", rev != BCMA_ANY_REV, rev); 873 ADD(alias, "cl", class != BCMA_ANY_CLASS, class); 874 add_wildcard(alias); 875 return 1; 876 } 877 878 /* Looks like: virtio:dNvN */ 879 static int do_virtio_entry(const char *filename, void *symval, 880 char *alias) 881 { 882 DEF_FIELD(symval, virtio_device_id, device); 883 DEF_FIELD(symval, virtio_device_id, vendor); 884 885 strcpy(alias, "virtio:"); 886 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device); 887 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor); 888 889 add_wildcard(alias); 890 return 1; 891 } 892 893 /* 894 * Looks like: vmbus:guid 895 * Each byte of the guid will be represented by two hex characters 896 * in the name. 897 */ 898 899 static int do_vmbus_entry(const char *filename, void *symval, 900 char *alias) 901 { 902 int i; 903 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid); 904 char guid_name[(sizeof(*guid) + 1) * 2]; 905 906 for (i = 0; i < (sizeof(*guid) * 2); i += 2) 907 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2])); 908 909 strcpy(alias, "vmbus:"); 910 strcat(alias, guid_name); 911 912 return 1; 913 } 914 915 /* Looks like: rpmsg:S */ 916 static int do_rpmsg_entry(const char *filename, void *symval, 917 char *alias) 918 { 919 DEF_FIELD_ADDR(symval, rpmsg_device_id, name); 920 sprintf(alias, RPMSG_DEVICE_MODALIAS_FMT, *name); 921 922 return 1; 923 } 924 925 /* Looks like: i2c:S */ 926 static int do_i2c_entry(const char *filename, void *symval, 927 char *alias) 928 { 929 DEF_FIELD_ADDR(symval, i2c_device_id, name); 930 sprintf(alias, I2C_MODULE_PREFIX "%s", *name); 931 932 return 1; 933 } 934 935 static int do_i3c_entry(const char *filename, void *symval, 936 char *alias) 937 { 938 DEF_FIELD(symval, i3c_device_id, match_flags); 939 DEF_FIELD(symval, i3c_device_id, dcr); 940 DEF_FIELD(symval, i3c_device_id, manuf_id); 941 DEF_FIELD(symval, i3c_device_id, part_id); 942 DEF_FIELD(symval, i3c_device_id, extra_info); 943 944 strcpy(alias, "i3c:"); 945 ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr); 946 ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id); 947 ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id); 948 ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info); 949 950 return 1; 951 } 952 953 /* Looks like: spi:S */ 954 static int do_spi_entry(const char *filename, void *symval, 955 char *alias) 956 { 957 DEF_FIELD_ADDR(symval, spi_device_id, name); 958 sprintf(alias, SPI_MODULE_PREFIX "%s", *name); 959 960 return 1; 961 } 962 963 static const struct dmifield { 964 const char *prefix; 965 int field; 966 } dmi_fields[] = { 967 { "bvn", DMI_BIOS_VENDOR }, 968 { "bvr", DMI_BIOS_VERSION }, 969 { "bd", DMI_BIOS_DATE }, 970 { "br", DMI_BIOS_RELEASE }, 971 { "efr", DMI_EC_FIRMWARE_RELEASE }, 972 { "svn", DMI_SYS_VENDOR }, 973 { "pn", DMI_PRODUCT_NAME }, 974 { "pvr", DMI_PRODUCT_VERSION }, 975 { "rvn", DMI_BOARD_VENDOR }, 976 { "rn", DMI_BOARD_NAME }, 977 { "rvr", DMI_BOARD_VERSION }, 978 { "cvn", DMI_CHASSIS_VENDOR }, 979 { "ct", DMI_CHASSIS_TYPE }, 980 { "cvr", DMI_CHASSIS_VERSION }, 981 { NULL, DMI_NONE } 982 }; 983 984 static void dmi_ascii_filter(char *d, const char *s) 985 { 986 /* Filter out characters we don't want to see in the modalias string */ 987 for (; *s; s++) 988 if (*s > ' ' && *s < 127 && *s != ':') 989 *(d++) = *s; 990 991 *d = 0; 992 } 993 994 995 static int do_dmi_entry(const char *filename, void *symval, 996 char *alias) 997 { 998 int i, j; 999 DEF_FIELD_ADDR(symval, dmi_system_id, matches); 1000 sprintf(alias, "dmi*"); 1001 1002 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) { 1003 for (j = 0; j < 4; j++) { 1004 if ((*matches)[j].slot && 1005 (*matches)[j].slot == dmi_fields[i].field) { 1006 sprintf(alias + strlen(alias), ":%s*", 1007 dmi_fields[i].prefix); 1008 dmi_ascii_filter(alias + strlen(alias), 1009 (*matches)[j].substr); 1010 strcat(alias, "*"); 1011 } 1012 } 1013 } 1014 1015 strcat(alias, ":"); 1016 return 1; 1017 } 1018 1019 static int do_platform_entry(const char *filename, 1020 void *symval, char *alias) 1021 { 1022 DEF_FIELD_ADDR(symval, platform_device_id, name); 1023 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name); 1024 return 1; 1025 } 1026 1027 static int do_mdio_entry(const char *filename, 1028 void *symval, char *alias) 1029 { 1030 int i; 1031 DEF_FIELD(symval, mdio_device_id, phy_id); 1032 DEF_FIELD(symval, mdio_device_id, phy_id_mask); 1033 1034 alias += sprintf(alias, MDIO_MODULE_PREFIX); 1035 1036 for (i = 0; i < 32; i++) { 1037 if (!((phy_id_mask >> (31-i)) & 1)) 1038 *(alias++) = '?'; 1039 else if ((phy_id >> (31-i)) & 1) 1040 *(alias++) = '1'; 1041 else 1042 *(alias++) = '0'; 1043 } 1044 1045 /* Terminate the string */ 1046 *alias = 0; 1047 1048 return 1; 1049 } 1050 1051 /* Looks like: zorro:iN. */ 1052 static int do_zorro_entry(const char *filename, void *symval, 1053 char *alias) 1054 { 1055 DEF_FIELD(symval, zorro_device_id, id); 1056 strcpy(alias, "zorro:"); 1057 ADD(alias, "i", id != ZORRO_WILDCARD, id); 1058 return 1; 1059 } 1060 1061 /* looks like: "pnp:dD" */ 1062 static int do_isapnp_entry(const char *filename, 1063 void *symval, char *alias) 1064 { 1065 DEF_FIELD(symval, isapnp_device_id, vendor); 1066 DEF_FIELD(symval, isapnp_device_id, function); 1067 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*", 1068 'A' + ((vendor >> 2) & 0x3f) - 1, 1069 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1, 1070 'A' + ((vendor >> 8) & 0x1f) - 1, 1071 (function >> 4) & 0x0f, function & 0x0f, 1072 (function >> 12) & 0x0f, (function >> 8) & 0x0f); 1073 return 1; 1074 } 1075 1076 /* Looks like: "ipack:fNvNdN". */ 1077 static int do_ipack_entry(const char *filename, 1078 void *symval, char *alias) 1079 { 1080 DEF_FIELD(symval, ipack_device_id, format); 1081 DEF_FIELD(symval, ipack_device_id, vendor); 1082 DEF_FIELD(symval, ipack_device_id, device); 1083 strcpy(alias, "ipack:"); 1084 ADD(alias, "f", format != IPACK_ANY_FORMAT, format); 1085 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor); 1086 ADD(alias, "d", device != IPACK_ANY_ID, device); 1087 add_wildcard(alias); 1088 return 1; 1089 } 1090 1091 /* 1092 * Append a match expression for a single masked hex digit. 1093 * outp points to a pointer to the character at which to append. 1094 * *outp is updated on return to point just after the appended text, 1095 * to facilitate further appending. 1096 */ 1097 static void append_nibble_mask(char **outp, 1098 unsigned int nibble, unsigned int mask) 1099 { 1100 char *p = *outp; 1101 unsigned int i; 1102 1103 switch (mask) { 1104 case 0: 1105 *p++ = '?'; 1106 break; 1107 1108 case 0xf: 1109 p += sprintf(p, "%X", nibble); 1110 break; 1111 1112 default: 1113 /* 1114 * Dumbly emit a match pattern for all possible matching 1115 * digits. This could be improved in some cases using ranges, 1116 * but it has the advantage of being trivially correct, and is 1117 * often optimal. 1118 */ 1119 *p++ = '['; 1120 for (i = 0; i < 0x10; i++) 1121 if ((i & mask) == nibble) 1122 p += sprintf(p, "%X", i); 1123 *p++ = ']'; 1124 } 1125 1126 /* Ensure that the string remains NUL-terminated: */ 1127 *p = '\0'; 1128 1129 /* Advance the caller's end-of-string pointer: */ 1130 *outp = p; 1131 } 1132 1133 /* 1134 * looks like: "amba:dN" 1135 * 1136 * N is exactly 8 digits, where each is an upper-case hex digit, or 1137 * a ? or [] pattern matching exactly one digit. 1138 */ 1139 static int do_amba_entry(const char *filename, 1140 void *symval, char *alias) 1141 { 1142 unsigned int digit; 1143 char *p = alias; 1144 DEF_FIELD(symval, amba_id, id); 1145 DEF_FIELD(symval, amba_id, mask); 1146 1147 if ((id & mask) != id) 1148 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: " 1149 "id=0x%08X, mask=0x%08X. Please fix this driver.\n", 1150 filename, id, mask); 1151 1152 p += sprintf(alias, "amba:d"); 1153 for (digit = 0; digit < 8; digit++) 1154 append_nibble_mask(&p, 1155 (id >> (4 * (7 - digit))) & 0xf, 1156 (mask >> (4 * (7 - digit))) & 0xf); 1157 1158 return 1; 1159 } 1160 1161 /* 1162 * looks like: "mipscdmm:tN" 1163 * 1164 * N is exactly 2 digits, where each is an upper-case hex digit, or 1165 * a ? or [] pattern matching exactly one digit. 1166 */ 1167 static int do_mips_cdmm_entry(const char *filename, 1168 void *symval, char *alias) 1169 { 1170 DEF_FIELD(symval, mips_cdmm_device_id, type); 1171 1172 sprintf(alias, "mipscdmm:t%02X*", type); 1173 return 1; 1174 } 1175 1176 /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,* 1177 * All fields are numbers. It would be nicer to use strings for vendor 1178 * and feature, but getting those out of the build system here is too 1179 * complicated. 1180 */ 1181 1182 static int do_x86cpu_entry(const char *filename, void *symval, 1183 char *alias) 1184 { 1185 DEF_FIELD(symval, x86_cpu_id, feature); 1186 DEF_FIELD(symval, x86_cpu_id, family); 1187 DEF_FIELD(symval, x86_cpu_id, model); 1188 DEF_FIELD(symval, x86_cpu_id, vendor); 1189 1190 strcpy(alias, "cpu:type:x86,"); 1191 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor); 1192 ADD(alias, "fam", family != X86_FAMILY_ANY, family); 1193 ADD(alias, "mod", model != X86_MODEL_ANY, model); 1194 strcat(alias, ":feature:*"); 1195 if (feature != X86_FEATURE_ANY) 1196 sprintf(alias + strlen(alias), "%04X*", feature); 1197 return 1; 1198 } 1199 1200 /* LOOKS like cpu:type:*:feature:*FEAT* */ 1201 static int do_cpu_entry(const char *filename, void *symval, char *alias) 1202 { 1203 DEF_FIELD(symval, cpu_feature, feature); 1204 1205 sprintf(alias, "cpu:type:*:feature:*%04X*", feature); 1206 return 1; 1207 } 1208 1209 /* Looks like: mei:S:uuid:N:* */ 1210 static int do_mei_entry(const char *filename, void *symval, 1211 char *alias) 1212 { 1213 DEF_FIELD_ADDR(symval, mei_cl_device_id, name); 1214 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid); 1215 DEF_FIELD(symval, mei_cl_device_id, version); 1216 1217 sprintf(alias, MEI_CL_MODULE_PREFIX); 1218 sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*"); 1219 add_uuid(alias, *uuid); 1220 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version); 1221 1222 strcat(alias, ":*"); 1223 1224 return 1; 1225 } 1226 1227 /* Looks like: rapidio:vNdNavNadN */ 1228 static int do_rio_entry(const char *filename, 1229 void *symval, char *alias) 1230 { 1231 DEF_FIELD(symval, rio_device_id, did); 1232 DEF_FIELD(symval, rio_device_id, vid); 1233 DEF_FIELD(symval, rio_device_id, asm_did); 1234 DEF_FIELD(symval, rio_device_id, asm_vid); 1235 1236 strcpy(alias, "rapidio:"); 1237 ADD(alias, "v", vid != RIO_ANY_ID, vid); 1238 ADD(alias, "d", did != RIO_ANY_ID, did); 1239 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid); 1240 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did); 1241 1242 add_wildcard(alias); 1243 return 1; 1244 } 1245 1246 /* Looks like: ulpi:vNpN */ 1247 static int do_ulpi_entry(const char *filename, void *symval, 1248 char *alias) 1249 { 1250 DEF_FIELD(symval, ulpi_device_id, vendor); 1251 DEF_FIELD(symval, ulpi_device_id, product); 1252 1253 sprintf(alias, "ulpi:v%04xp%04x", vendor, product); 1254 1255 return 1; 1256 } 1257 1258 /* Looks like: hdaudio:vNrNaN */ 1259 static int do_hda_entry(const char *filename, void *symval, char *alias) 1260 { 1261 DEF_FIELD(symval, hda_device_id, vendor_id); 1262 DEF_FIELD(symval, hda_device_id, rev_id); 1263 DEF_FIELD(symval, hda_device_id, api_version); 1264 1265 strcpy(alias, "hdaudio:"); 1266 ADD(alias, "v", vendor_id != 0, vendor_id); 1267 ADD(alias, "r", rev_id != 0, rev_id); 1268 ADD(alias, "a", api_version != 0, api_version); 1269 1270 add_wildcard(alias); 1271 return 1; 1272 } 1273 1274 /* Looks like: sdw:mNpNvNcN */ 1275 static int do_sdw_entry(const char *filename, void *symval, char *alias) 1276 { 1277 DEF_FIELD(symval, sdw_device_id, mfg_id); 1278 DEF_FIELD(symval, sdw_device_id, part_id); 1279 DEF_FIELD(symval, sdw_device_id, sdw_version); 1280 DEF_FIELD(symval, sdw_device_id, class_id); 1281 1282 strcpy(alias, "sdw:"); 1283 ADD(alias, "m", mfg_id != 0, mfg_id); 1284 ADD(alias, "p", part_id != 0, part_id); 1285 ADD(alias, "v", sdw_version != 0, sdw_version); 1286 ADD(alias, "c", class_id != 0, class_id); 1287 1288 add_wildcard(alias); 1289 return 1; 1290 } 1291 1292 /* Looks like: fsl-mc:vNdN */ 1293 static int do_fsl_mc_entry(const char *filename, void *symval, 1294 char *alias) 1295 { 1296 DEF_FIELD(symval, fsl_mc_device_id, vendor); 1297 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type); 1298 1299 sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type); 1300 return 1; 1301 } 1302 1303 /* Looks like: tbsvc:kSpNvNrN */ 1304 static int do_tbsvc_entry(const char *filename, void *symval, char *alias) 1305 { 1306 DEF_FIELD(symval, tb_service_id, match_flags); 1307 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key); 1308 DEF_FIELD(symval, tb_service_id, protocol_id); 1309 DEF_FIELD(symval, tb_service_id, protocol_version); 1310 DEF_FIELD(symval, tb_service_id, protocol_revision); 1311 1312 strcpy(alias, "tbsvc:"); 1313 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY) 1314 sprintf(alias + strlen(alias), "k%s", *protocol_key); 1315 else 1316 strcat(alias + strlen(alias), "k*"); 1317 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id); 1318 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION, 1319 protocol_version); 1320 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION, 1321 protocol_revision); 1322 1323 add_wildcard(alias); 1324 return 1; 1325 } 1326 1327 /* Looks like: typec:idNmN */ 1328 static int do_typec_entry(const char *filename, void *symval, char *alias) 1329 { 1330 DEF_FIELD(symval, typec_device_id, svid); 1331 DEF_FIELD(symval, typec_device_id, mode); 1332 1333 sprintf(alias, "typec:id%04X", svid); 1334 ADD(alias, "m", mode != TYPEC_ANY_MODE, mode); 1335 1336 return 1; 1337 } 1338 1339 /* Looks like: tee:uuid */ 1340 static int do_tee_entry(const char *filename, void *symval, char *alias) 1341 { 1342 DEF_FIELD(symval, tee_client_device_id, uuid); 1343 1344 sprintf(alias, "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", 1345 uuid.b[0], uuid.b[1], uuid.b[2], uuid.b[3], uuid.b[4], 1346 uuid.b[5], uuid.b[6], uuid.b[7], uuid.b[8], uuid.b[9], 1347 uuid.b[10], uuid.b[11], uuid.b[12], uuid.b[13], uuid.b[14], 1348 uuid.b[15]); 1349 1350 add_wildcard(alias); 1351 return 1; 1352 } 1353 1354 /* Looks like: wmi:guid */ 1355 static int do_wmi_entry(const char *filename, void *symval, char *alias) 1356 { 1357 int len; 1358 DEF_FIELD_ADDR(symval, wmi_device_id, guid_string); 1359 1360 if (strlen(*guid_string) != UUID_STRING_LEN) { 1361 warn("Invalid WMI device id 'wmi:%s' in '%s'\n", 1362 *guid_string, filename); 1363 return 0; 1364 } 1365 1366 len = snprintf(alias, ALIAS_SIZE, WMI_MODULE_PREFIX "%s", *guid_string); 1367 if (len < 0 || len >= ALIAS_SIZE) { 1368 warn("Could not generate all MODULE_ALIAS's in '%s'\n", 1369 filename); 1370 return 0; 1371 } 1372 return 1; 1373 } 1374 1375 /* Looks like: mhi:S */ 1376 static int do_mhi_entry(const char *filename, void *symval, char *alias) 1377 { 1378 DEF_FIELD_ADDR(symval, mhi_device_id, chan); 1379 sprintf(alias, MHI_DEVICE_MODALIAS_FMT, *chan); 1380 return 1; 1381 } 1382 1383 static int do_auxiliary_entry(const char *filename, void *symval, char *alias) 1384 { 1385 DEF_FIELD_ADDR(symval, auxiliary_device_id, name); 1386 sprintf(alias, AUXILIARY_MODULE_PREFIX "%s", *name); 1387 1388 return 1; 1389 } 1390 1391 /* 1392 * Looks like: ssam:dNcNtNiNfN 1393 * 1394 * N is exactly 2 digits, where each is an upper-case hex digit. 1395 */ 1396 static int do_ssam_entry(const char *filename, void *symval, char *alias) 1397 { 1398 DEF_FIELD(symval, ssam_device_id, match_flags); 1399 DEF_FIELD(symval, ssam_device_id, domain); 1400 DEF_FIELD(symval, ssam_device_id, category); 1401 DEF_FIELD(symval, ssam_device_id, target); 1402 DEF_FIELD(symval, ssam_device_id, instance); 1403 DEF_FIELD(symval, ssam_device_id, function); 1404 1405 sprintf(alias, "ssam:d%02Xc%02X", domain, category); 1406 ADD(alias, "t", match_flags & SSAM_MATCH_TARGET, target); 1407 ADD(alias, "i", match_flags & SSAM_MATCH_INSTANCE, instance); 1408 ADD(alias, "f", match_flags & SSAM_MATCH_FUNCTION, function); 1409 1410 return 1; 1411 } 1412 1413 /* Looks like: dfl:tNfN */ 1414 static int do_dfl_entry(const char *filename, void *symval, char *alias) 1415 { 1416 DEF_FIELD(symval, dfl_device_id, type); 1417 DEF_FIELD(symval, dfl_device_id, feature_id); 1418 1419 sprintf(alias, "dfl:t%04Xf%04X", type, feature_id); 1420 1421 add_wildcard(alias); 1422 return 1; 1423 } 1424 1425 /* Does namelen bytes of name exactly match the symbol? */ 1426 static bool sym_is(const char *name, unsigned namelen, const char *symbol) 1427 { 1428 if (namelen != strlen(symbol)) 1429 return false; 1430 1431 return memcmp(name, symbol, namelen) == 0; 1432 } 1433 1434 static void do_table(void *symval, unsigned long size, 1435 unsigned long id_size, 1436 const char *device_id, 1437 int (*do_entry)(const char *filename, void *symval, char *alias), 1438 struct module *mod) 1439 { 1440 unsigned int i; 1441 char alias[ALIAS_SIZE]; 1442 1443 device_id_check(mod->name, device_id, size, id_size, symval); 1444 /* Leave last one: it's the terminator. */ 1445 size -= id_size; 1446 1447 for (i = 0; i < size; i += id_size) { 1448 if (do_entry(mod->name, symval+i, alias)) { 1449 buf_printf(&mod->dev_table_buf, 1450 "MODULE_ALIAS(\"%s\");\n", alias); 1451 } 1452 } 1453 } 1454 1455 static const struct devtable devtable[] = { 1456 {"hid", SIZE_hid_device_id, do_hid_entry}, 1457 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry}, 1458 {"pci", SIZE_pci_device_id, do_pci_entry}, 1459 {"ccw", SIZE_ccw_device_id, do_ccw_entry}, 1460 {"ap", SIZE_ap_device_id, do_ap_entry}, 1461 {"css", SIZE_css_device_id, do_css_entry}, 1462 {"serio", SIZE_serio_device_id, do_serio_entry}, 1463 {"acpi", SIZE_acpi_device_id, do_acpi_entry}, 1464 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry}, 1465 {"vio", SIZE_vio_device_id, do_vio_entry}, 1466 {"input", SIZE_input_device_id, do_input_entry}, 1467 {"eisa", SIZE_eisa_device_id, do_eisa_entry}, 1468 {"parisc", SIZE_parisc_device_id, do_parisc_entry}, 1469 {"sdio", SIZE_sdio_device_id, do_sdio_entry}, 1470 {"ssb", SIZE_ssb_device_id, do_ssb_entry}, 1471 {"bcma", SIZE_bcma_device_id, do_bcma_entry}, 1472 {"virtio", SIZE_virtio_device_id, do_virtio_entry}, 1473 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry}, 1474 {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry}, 1475 {"i2c", SIZE_i2c_device_id, do_i2c_entry}, 1476 {"i3c", SIZE_i3c_device_id, do_i3c_entry}, 1477 {"spi", SIZE_spi_device_id, do_spi_entry}, 1478 {"dmi", SIZE_dmi_system_id, do_dmi_entry}, 1479 {"platform", SIZE_platform_device_id, do_platform_entry}, 1480 {"mdio", SIZE_mdio_device_id, do_mdio_entry}, 1481 {"zorro", SIZE_zorro_device_id, do_zorro_entry}, 1482 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry}, 1483 {"ipack", SIZE_ipack_device_id, do_ipack_entry}, 1484 {"amba", SIZE_amba_id, do_amba_entry}, 1485 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry}, 1486 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry}, 1487 {"cpu", SIZE_cpu_feature, do_cpu_entry}, 1488 {"mei", SIZE_mei_cl_device_id, do_mei_entry}, 1489 {"rapidio", SIZE_rio_device_id, do_rio_entry}, 1490 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry}, 1491 {"hdaudio", SIZE_hda_device_id, do_hda_entry}, 1492 {"sdw", SIZE_sdw_device_id, do_sdw_entry}, 1493 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry}, 1494 {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry}, 1495 {"typec", SIZE_typec_device_id, do_typec_entry}, 1496 {"tee", SIZE_tee_client_device_id, do_tee_entry}, 1497 {"wmi", SIZE_wmi_device_id, do_wmi_entry}, 1498 {"mhi", SIZE_mhi_device_id, do_mhi_entry}, 1499 {"auxiliary", SIZE_auxiliary_device_id, do_auxiliary_entry}, 1500 {"ssam", SIZE_ssam_device_id, do_ssam_entry}, 1501 {"dfl", SIZE_dfl_device_id, do_dfl_entry}, 1502 }; 1503 1504 /* Create MODULE_ALIAS() statements. 1505 * At this time, we cannot write the actual output C source yet, 1506 * so we write into the mod->dev_table_buf buffer. */ 1507 void handle_moddevtable(struct module *mod, struct elf_info *info, 1508 Elf_Sym *sym, const char *symname) 1509 { 1510 void *symval; 1511 char *zeros = NULL; 1512 const char *name, *identifier; 1513 unsigned int namelen; 1514 1515 /* We're looking for a section relative symbol */ 1516 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections) 1517 return; 1518 1519 /* We're looking for an object */ 1520 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT) 1521 return; 1522 1523 /* All our symbols are of form __mod_<name>__<identifier>_device_table. */ 1524 if (strncmp(symname, "__mod_", strlen("__mod_"))) 1525 return; 1526 name = symname + strlen("__mod_"); 1527 namelen = strlen(name); 1528 if (namelen < strlen("_device_table")) 1529 return; 1530 if (strcmp(name + namelen - strlen("_device_table"), "_device_table")) 1531 return; 1532 identifier = strstr(name, "__"); 1533 if (!identifier) 1534 return; 1535 namelen = identifier - name; 1536 1537 /* Handle all-NULL symbols allocated into .bss */ 1538 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) { 1539 zeros = calloc(1, sym->st_size); 1540 symval = zeros; 1541 } else { 1542 symval = (void *)info->hdr 1543 + info->sechdrs[get_secindex(info, sym)].sh_offset 1544 + sym->st_value; 1545 } 1546 1547 /* First handle the "special" cases */ 1548 if (sym_is(name, namelen, "usb")) 1549 do_usb_table(symval, sym->st_size, mod); 1550 if (sym_is(name, namelen, "of")) 1551 do_of_table(symval, sym->st_size, mod); 1552 else if (sym_is(name, namelen, "pnp")) 1553 do_pnp_device_entry(symval, sym->st_size, mod); 1554 else if (sym_is(name, namelen, "pnp_card")) 1555 do_pnp_card_entries(symval, sym->st_size, mod); 1556 else { 1557 int i; 1558 1559 for (i = 0; i < ARRAY_SIZE(devtable); i++) { 1560 const struct devtable *p = &devtable[i]; 1561 1562 if (sym_is(name, namelen, p->device_id)) { 1563 do_table(symval, sym->st_size, p->id_size, 1564 p->device_id, p->do_entry, mod); 1565 break; 1566 } 1567 } 1568 } 1569 free(zeros); 1570 } 1571 1572 /* Now add out buffered information to the generated C source */ 1573 void add_moddevtable(struct buffer *buf, struct module *mod) 1574 { 1575 buf_printf(buf, "\n"); 1576 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos); 1577 free(mod->dev_table_buf.p); 1578 } 1579