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