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