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