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