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