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