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" or 527 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if) 528 * 529 * NOTE: Each driver should use one of the following : _HID, _CIDs 530 * or _CLS. Also, bb, ss, and pp can be substituted with ?? 531 * as don't care byte. 532 */ 533 static int do_acpi_entry(const char *filename, 534 void *symval, char *alias) 535 { 536 DEF_FIELD_ADDR(symval, acpi_device_id, id); 537 DEF_FIELD_ADDR(symval, acpi_device_id, cls); 538 DEF_FIELD_ADDR(symval, acpi_device_id, cls_msk); 539 540 if (id && strlen((const char *)*id)) 541 sprintf(alias, "acpi*:%s:*", *id); 542 else if (cls) { 543 int i, byte_shift, cnt = 0; 544 unsigned int msk; 545 546 sprintf(&alias[cnt], "acpi*:"); 547 cnt = 6; 548 for (i = 1; i <= 3; i++) { 549 byte_shift = 8 * (3-i); 550 msk = (*cls_msk >> byte_shift) & 0xFF; 551 if (msk) 552 sprintf(&alias[cnt], "%02x", 553 (*cls >> byte_shift) & 0xFF); 554 else 555 sprintf(&alias[cnt], "??"); 556 cnt += 2; 557 } 558 sprintf(&alias[cnt], ":*"); 559 } 560 return 1; 561 } 562 ADD_TO_DEVTABLE("acpi", acpi_device_id, do_acpi_entry); 563 564 /* looks like: "pnp:dD" */ 565 static void do_pnp_device_entry(void *symval, unsigned long size, 566 struct module *mod) 567 { 568 const unsigned long id_size = SIZE_pnp_device_id; 569 const unsigned int count = (size / id_size)-1; 570 unsigned int i; 571 572 device_id_check(mod->name, "pnp", size, id_size, symval); 573 574 for (i = 0; i < count; i++) { 575 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id); 576 char acpi_id[sizeof(*id)]; 577 int j; 578 579 buf_printf(&mod->dev_table_buf, 580 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id); 581 582 /* fix broken pnp bus lowercasing */ 583 for (j = 0; j < sizeof(acpi_id); j++) 584 acpi_id[j] = toupper((*id)[j]); 585 buf_printf(&mod->dev_table_buf, 586 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id); 587 } 588 } 589 590 /* looks like: "pnp:dD" for every device of the card */ 591 static void do_pnp_card_entries(void *symval, unsigned long size, 592 struct module *mod) 593 { 594 const unsigned long id_size = SIZE_pnp_card_device_id; 595 const unsigned int count = (size / id_size)-1; 596 unsigned int i; 597 598 device_id_check(mod->name, "pnp", size, id_size, symval); 599 600 for (i = 0; i < count; i++) { 601 unsigned int j; 602 DEF_FIELD_ADDR(symval + i*id_size, pnp_card_device_id, devs); 603 604 for (j = 0; j < PNP_MAX_DEVICES; j++) { 605 const char *id = (char *)(*devs)[j].id; 606 int i2, j2; 607 int dup = 0; 608 609 if (!id[0]) 610 break; 611 612 /* find duplicate, already added value */ 613 for (i2 = 0; i2 < i && !dup; i2++) { 614 DEF_FIELD_ADDR(symval + i2*id_size, pnp_card_device_id, devs); 615 616 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) { 617 const char *id2 = (char *)(*devs)[j2].id; 618 619 if (!id2[0]) 620 break; 621 622 if (!strcmp(id, id2)) { 623 dup = 1; 624 break; 625 } 626 } 627 } 628 629 /* add an individual alias for every device entry */ 630 if (!dup) { 631 char acpi_id[PNP_ID_LEN]; 632 int k; 633 634 buf_printf(&mod->dev_table_buf, 635 "MODULE_ALIAS(\"pnp:d%s*\");\n", id); 636 637 /* fix broken pnp bus lowercasing */ 638 for (k = 0; k < sizeof(acpi_id); k++) 639 acpi_id[k] = toupper(id[k]); 640 buf_printf(&mod->dev_table_buf, 641 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id); 642 } 643 } 644 } 645 } 646 647 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */ 648 static int do_pcmcia_entry(const char *filename, 649 void *symval, char *alias) 650 { 651 unsigned int i; 652 DEF_FIELD(symval, pcmcia_device_id, match_flags); 653 DEF_FIELD(symval, pcmcia_device_id, manf_id); 654 DEF_FIELD(symval, pcmcia_device_id, card_id); 655 DEF_FIELD(symval, pcmcia_device_id, func_id); 656 DEF_FIELD(symval, pcmcia_device_id, function); 657 DEF_FIELD(symval, pcmcia_device_id, device_no); 658 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash); 659 660 for (i=0; i<4; i++) { 661 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]); 662 } 663 664 strcpy(alias, "pcmcia:"); 665 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID, 666 manf_id); 667 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID, 668 card_id); 669 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID, 670 func_id); 671 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION, 672 function); 673 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO, 674 device_no); 675 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]); 676 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]); 677 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]); 678 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]); 679 680 add_wildcard(alias); 681 return 1; 682 } 683 ADD_TO_DEVTABLE("pcmcia", pcmcia_device_id, do_pcmcia_entry); 684 685 static int do_of_entry (const char *filename, void *symval, char *alias) 686 { 687 int len; 688 char *tmp; 689 DEF_FIELD_ADDR(symval, of_device_id, name); 690 DEF_FIELD_ADDR(symval, of_device_id, type); 691 DEF_FIELD_ADDR(symval, of_device_id, compatible); 692 693 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*", 694 (*type)[0] ? *type : "*"); 695 696 if (compatible[0]) 697 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "", 698 *compatible); 699 700 /* Replace all whitespace with underscores */ 701 for (tmp = alias; tmp && *tmp; tmp++) 702 if (isspace (*tmp)) 703 *tmp = '_'; 704 705 add_wildcard(alias); 706 return 1; 707 } 708 ADD_TO_DEVTABLE("of", of_device_id, do_of_entry); 709 710 static int do_vio_entry(const char *filename, void *symval, 711 char *alias) 712 { 713 char *tmp; 714 DEF_FIELD_ADDR(symval, vio_device_id, type); 715 DEF_FIELD_ADDR(symval, vio_device_id, compat); 716 717 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*", 718 (*compat)[0] ? *compat : "*"); 719 720 /* Replace all whitespace with underscores */ 721 for (tmp = alias; tmp && *tmp; tmp++) 722 if (isspace (*tmp)) 723 *tmp = '_'; 724 725 add_wildcard(alias); 726 return 1; 727 } 728 ADD_TO_DEVTABLE("vio", vio_device_id, do_vio_entry); 729 730 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) 731 732 static void do_input(char *alias, 733 kernel_ulong_t *arr, unsigned int min, unsigned int max) 734 { 735 unsigned int i; 736 737 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++) 738 arr[i] = TO_NATIVE(arr[i]); 739 for (i = min; i < max; i++) 740 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG))) 741 sprintf(alias + strlen(alias), "%X,*", i); 742 } 743 744 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */ 745 static int do_input_entry(const char *filename, void *symval, 746 char *alias) 747 { 748 DEF_FIELD(symval, input_device_id, flags); 749 DEF_FIELD(symval, input_device_id, bustype); 750 DEF_FIELD(symval, input_device_id, vendor); 751 DEF_FIELD(symval, input_device_id, product); 752 DEF_FIELD(symval, input_device_id, version); 753 DEF_FIELD_ADDR(symval, input_device_id, evbit); 754 DEF_FIELD_ADDR(symval, input_device_id, keybit); 755 DEF_FIELD_ADDR(symval, input_device_id, relbit); 756 DEF_FIELD_ADDR(symval, input_device_id, absbit); 757 DEF_FIELD_ADDR(symval, input_device_id, mscbit); 758 DEF_FIELD_ADDR(symval, input_device_id, ledbit); 759 DEF_FIELD_ADDR(symval, input_device_id, sndbit); 760 DEF_FIELD_ADDR(symval, input_device_id, ffbit); 761 DEF_FIELD_ADDR(symval, input_device_id, swbit); 762 763 sprintf(alias, "input:"); 764 765 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype); 766 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor); 767 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product); 768 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version); 769 770 sprintf(alias + strlen(alias), "-e*"); 771 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT) 772 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX); 773 sprintf(alias + strlen(alias), "k*"); 774 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT) 775 do_input(alias, *keybit, 776 INPUT_DEVICE_ID_KEY_MIN_INTERESTING, 777 INPUT_DEVICE_ID_KEY_MAX); 778 sprintf(alias + strlen(alias), "r*"); 779 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT) 780 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX); 781 sprintf(alias + strlen(alias), "a*"); 782 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT) 783 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX); 784 sprintf(alias + strlen(alias), "m*"); 785 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT) 786 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX); 787 sprintf(alias + strlen(alias), "l*"); 788 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT) 789 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX); 790 sprintf(alias + strlen(alias), "s*"); 791 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT) 792 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX); 793 sprintf(alias + strlen(alias), "f*"); 794 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT) 795 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX); 796 sprintf(alias + strlen(alias), "w*"); 797 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT) 798 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX); 799 return 1; 800 } 801 ADD_TO_DEVTABLE("input", input_device_id, do_input_entry); 802 803 static int do_eisa_entry(const char *filename, void *symval, 804 char *alias) 805 { 806 DEF_FIELD_ADDR(symval, eisa_device_id, sig); 807 if (sig[0]) 808 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig); 809 else 810 strcat(alias, "*"); 811 return 1; 812 } 813 ADD_TO_DEVTABLE("eisa", eisa_device_id, do_eisa_entry); 814 815 /* Looks like: parisc:tNhvNrevNsvN */ 816 static int do_parisc_entry(const char *filename, void *symval, 817 char *alias) 818 { 819 DEF_FIELD(symval, parisc_device_id, hw_type); 820 DEF_FIELD(symval, parisc_device_id, hversion); 821 DEF_FIELD(symval, parisc_device_id, hversion_rev); 822 DEF_FIELD(symval, parisc_device_id, sversion); 823 824 strcpy(alias, "parisc:"); 825 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type); 826 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion); 827 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev); 828 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion); 829 830 add_wildcard(alias); 831 return 1; 832 } 833 ADD_TO_DEVTABLE("parisc", parisc_device_id, do_parisc_entry); 834 835 /* Looks like: sdio:cNvNdN. */ 836 static int do_sdio_entry(const char *filename, 837 void *symval, char *alias) 838 { 839 DEF_FIELD(symval, sdio_device_id, class); 840 DEF_FIELD(symval, sdio_device_id, vendor); 841 DEF_FIELD(symval, sdio_device_id, device); 842 843 strcpy(alias, "sdio:"); 844 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class); 845 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor); 846 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device); 847 add_wildcard(alias); 848 return 1; 849 } 850 ADD_TO_DEVTABLE("sdio", sdio_device_id, do_sdio_entry); 851 852 /* Looks like: ssb:vNidNrevN. */ 853 static int do_ssb_entry(const char *filename, 854 void *symval, char *alias) 855 { 856 DEF_FIELD(symval, ssb_device_id, vendor); 857 DEF_FIELD(symval, ssb_device_id, coreid); 858 DEF_FIELD(symval, ssb_device_id, revision); 859 860 strcpy(alias, "ssb:"); 861 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor); 862 ADD(alias, "id", coreid != SSB_ANY_ID, coreid); 863 ADD(alias, "rev", revision != SSB_ANY_REV, revision); 864 add_wildcard(alias); 865 return 1; 866 } 867 ADD_TO_DEVTABLE("ssb", ssb_device_id, do_ssb_entry); 868 869 /* Looks like: bcma:mNidNrevNclN. */ 870 static int do_bcma_entry(const char *filename, 871 void *symval, char *alias) 872 { 873 DEF_FIELD(symval, bcma_device_id, manuf); 874 DEF_FIELD(symval, bcma_device_id, id); 875 DEF_FIELD(symval, bcma_device_id, rev); 876 DEF_FIELD(symval, bcma_device_id, class); 877 878 strcpy(alias, "bcma:"); 879 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf); 880 ADD(alias, "id", id != BCMA_ANY_ID, id); 881 ADD(alias, "rev", rev != BCMA_ANY_REV, rev); 882 ADD(alias, "cl", class != BCMA_ANY_CLASS, class); 883 add_wildcard(alias); 884 return 1; 885 } 886 ADD_TO_DEVTABLE("bcma", bcma_device_id, do_bcma_entry); 887 888 /* Looks like: virtio:dNvN */ 889 static int do_virtio_entry(const char *filename, void *symval, 890 char *alias) 891 { 892 DEF_FIELD(symval, virtio_device_id, device); 893 DEF_FIELD(symval, virtio_device_id, vendor); 894 895 strcpy(alias, "virtio:"); 896 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device); 897 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor); 898 899 add_wildcard(alias); 900 return 1; 901 } 902 ADD_TO_DEVTABLE("virtio", virtio_device_id, do_virtio_entry); 903 904 /* 905 * Looks like: vmbus:guid 906 * Each byte of the guid will be represented by two hex characters 907 * in the name. 908 */ 909 910 static int do_vmbus_entry(const char *filename, void *symval, 911 char *alias) 912 { 913 int i; 914 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid); 915 char guid_name[(sizeof(*guid) + 1) * 2]; 916 917 for (i = 0; i < (sizeof(*guid) * 2); i += 2) 918 sprintf(&guid_name[i], "%02x", TO_NATIVE((*guid)[i/2])); 919 920 strcpy(alias, "vmbus:"); 921 strcat(alias, guid_name); 922 923 return 1; 924 } 925 ADD_TO_DEVTABLE("vmbus", hv_vmbus_device_id, do_vmbus_entry); 926 927 /* Looks like: i2c:S */ 928 static int do_i2c_entry(const char *filename, void *symval, 929 char *alias) 930 { 931 DEF_FIELD_ADDR(symval, i2c_device_id, name); 932 sprintf(alias, I2C_MODULE_PREFIX "%s", *name); 933 934 return 1; 935 } 936 ADD_TO_DEVTABLE("i2c", i2c_device_id, do_i2c_entry); 937 938 /* Looks like: spi:S */ 939 static int do_spi_entry(const char *filename, void *symval, 940 char *alias) 941 { 942 DEF_FIELD_ADDR(symval, spi_device_id, name); 943 sprintf(alias, SPI_MODULE_PREFIX "%s", *name); 944 945 return 1; 946 } 947 ADD_TO_DEVTABLE("spi", spi_device_id, do_spi_entry); 948 949 static const struct dmifield { 950 const char *prefix; 951 int field; 952 } dmi_fields[] = { 953 { "bvn", DMI_BIOS_VENDOR }, 954 { "bvr", DMI_BIOS_VERSION }, 955 { "bd", DMI_BIOS_DATE }, 956 { "svn", DMI_SYS_VENDOR }, 957 { "pn", DMI_PRODUCT_NAME }, 958 { "pvr", DMI_PRODUCT_VERSION }, 959 { "rvn", DMI_BOARD_VENDOR }, 960 { "rn", DMI_BOARD_NAME }, 961 { "rvr", DMI_BOARD_VERSION }, 962 { "cvn", DMI_CHASSIS_VENDOR }, 963 { "ct", DMI_CHASSIS_TYPE }, 964 { "cvr", DMI_CHASSIS_VERSION }, 965 { NULL, DMI_NONE } 966 }; 967 968 static void dmi_ascii_filter(char *d, const char *s) 969 { 970 /* Filter out characters we don't want to see in the modalias string */ 971 for (; *s; s++) 972 if (*s > ' ' && *s < 127 && *s != ':') 973 *(d++) = *s; 974 975 *d = 0; 976 } 977 978 979 static int do_dmi_entry(const char *filename, void *symval, 980 char *alias) 981 { 982 int i, j; 983 DEF_FIELD_ADDR(symval, dmi_system_id, matches); 984 sprintf(alias, "dmi*"); 985 986 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) { 987 for (j = 0; j < 4; j++) { 988 if ((*matches)[j].slot && 989 (*matches)[j].slot == dmi_fields[i].field) { 990 sprintf(alias + strlen(alias), ":%s*", 991 dmi_fields[i].prefix); 992 dmi_ascii_filter(alias + strlen(alias), 993 (*matches)[j].substr); 994 strcat(alias, "*"); 995 } 996 } 997 } 998 999 strcat(alias, ":"); 1000 return 1; 1001 } 1002 ADD_TO_DEVTABLE("dmi", dmi_system_id, do_dmi_entry); 1003 1004 static int do_platform_entry(const char *filename, 1005 void *symval, char *alias) 1006 { 1007 DEF_FIELD_ADDR(symval, platform_device_id, name); 1008 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name); 1009 return 1; 1010 } 1011 ADD_TO_DEVTABLE("platform", platform_device_id, do_platform_entry); 1012 1013 static int do_mdio_entry(const char *filename, 1014 void *symval, char *alias) 1015 { 1016 int i; 1017 DEF_FIELD(symval, mdio_device_id, phy_id); 1018 DEF_FIELD(symval, mdio_device_id, phy_id_mask); 1019 1020 alias += sprintf(alias, MDIO_MODULE_PREFIX); 1021 1022 for (i = 0; i < 32; i++) { 1023 if (!((phy_id_mask >> (31-i)) & 1)) 1024 *(alias++) = '?'; 1025 else if ((phy_id >> (31-i)) & 1) 1026 *(alias++) = '1'; 1027 else 1028 *(alias++) = '0'; 1029 } 1030 1031 /* Terminate the string */ 1032 *alias = 0; 1033 1034 return 1; 1035 } 1036 ADD_TO_DEVTABLE("mdio", mdio_device_id, do_mdio_entry); 1037 1038 /* Looks like: zorro:iN. */ 1039 static int do_zorro_entry(const char *filename, void *symval, 1040 char *alias) 1041 { 1042 DEF_FIELD(symval, zorro_device_id, id); 1043 strcpy(alias, "zorro:"); 1044 ADD(alias, "i", id != ZORRO_WILDCARD, id); 1045 return 1; 1046 } 1047 ADD_TO_DEVTABLE("zorro", zorro_device_id, do_zorro_entry); 1048 1049 /* looks like: "pnp:dD" */ 1050 static int do_isapnp_entry(const char *filename, 1051 void *symval, char *alias) 1052 { 1053 DEF_FIELD(symval, isapnp_device_id, vendor); 1054 DEF_FIELD(symval, isapnp_device_id, function); 1055 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*", 1056 'A' + ((vendor >> 2) & 0x3f) - 1, 1057 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1, 1058 'A' + ((vendor >> 8) & 0x1f) - 1, 1059 (function >> 4) & 0x0f, function & 0x0f, 1060 (function >> 12) & 0x0f, (function >> 8) & 0x0f); 1061 return 1; 1062 } 1063 ADD_TO_DEVTABLE("isapnp", isapnp_device_id, do_isapnp_entry); 1064 1065 /* Looks like: "ipack:fNvNdN". */ 1066 static int do_ipack_entry(const char *filename, 1067 void *symval, char *alias) 1068 { 1069 DEF_FIELD(symval, ipack_device_id, format); 1070 DEF_FIELD(symval, ipack_device_id, vendor); 1071 DEF_FIELD(symval, ipack_device_id, device); 1072 strcpy(alias, "ipack:"); 1073 ADD(alias, "f", format != IPACK_ANY_FORMAT, format); 1074 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor); 1075 ADD(alias, "d", device != IPACK_ANY_ID, device); 1076 add_wildcard(alias); 1077 return 1; 1078 } 1079 ADD_TO_DEVTABLE("ipack", ipack_device_id, do_ipack_entry); 1080 1081 /* 1082 * Append a match expression for a single masked hex digit. 1083 * outp points to a pointer to the character at which to append. 1084 * *outp is updated on return to point just after the appended text, 1085 * to facilitate further appending. 1086 */ 1087 static void append_nibble_mask(char **outp, 1088 unsigned int nibble, unsigned int mask) 1089 { 1090 char *p = *outp; 1091 unsigned int i; 1092 1093 switch (mask) { 1094 case 0: 1095 *p++ = '?'; 1096 break; 1097 1098 case 0xf: 1099 p += sprintf(p, "%X", nibble); 1100 break; 1101 1102 default: 1103 /* 1104 * Dumbly emit a match pattern for all possible matching 1105 * digits. This could be improved in some cases using ranges, 1106 * but it has the advantage of being trivially correct, and is 1107 * often optimal. 1108 */ 1109 *p++ = '['; 1110 for (i = 0; i < 0x10; i++) 1111 if ((i & mask) == nibble) 1112 p += sprintf(p, "%X", i); 1113 *p++ = ']'; 1114 } 1115 1116 /* Ensure that the string remains NUL-terminated: */ 1117 *p = '\0'; 1118 1119 /* Advance the caller's end-of-string pointer: */ 1120 *outp = p; 1121 } 1122 1123 /* 1124 * looks like: "amba:dN" 1125 * 1126 * N is exactly 8 digits, where each is an upper-case hex digit, or 1127 * a ? or [] pattern matching exactly one digit. 1128 */ 1129 static int do_amba_entry(const char *filename, 1130 void *symval, char *alias) 1131 { 1132 unsigned int digit; 1133 char *p = alias; 1134 DEF_FIELD(symval, amba_id, id); 1135 DEF_FIELD(symval, amba_id, mask); 1136 1137 if ((id & mask) != id) 1138 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: " 1139 "id=0x%08X, mask=0x%08X. Please fix this driver.\n", 1140 filename, id, mask); 1141 1142 p += sprintf(alias, "amba:d"); 1143 for (digit = 0; digit < 8; digit++) 1144 append_nibble_mask(&p, 1145 (id >> (4 * (7 - digit))) & 0xf, 1146 (mask >> (4 * (7 - digit))) & 0xf); 1147 1148 return 1; 1149 } 1150 ADD_TO_DEVTABLE("amba", amba_id, do_amba_entry); 1151 1152 /* 1153 * looks like: "mipscdmm:tN" 1154 * 1155 * N is exactly 2 digits, where each is an upper-case hex digit, or 1156 * a ? or [] pattern matching exactly one digit. 1157 */ 1158 static int do_mips_cdmm_entry(const char *filename, 1159 void *symval, char *alias) 1160 { 1161 DEF_FIELD(symval, mips_cdmm_device_id, type); 1162 1163 sprintf(alias, "mipscdmm:t%02X*", type); 1164 return 1; 1165 } 1166 ADD_TO_DEVTABLE("mipscdmm", mips_cdmm_device_id, do_mips_cdmm_entry); 1167 1168 /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,* 1169 * All fields are numbers. It would be nicer to use strings for vendor 1170 * and feature, but getting those out of the build system here is too 1171 * complicated. 1172 */ 1173 1174 static int do_x86cpu_entry(const char *filename, void *symval, 1175 char *alias) 1176 { 1177 DEF_FIELD(symval, x86_cpu_id, feature); 1178 DEF_FIELD(symval, x86_cpu_id, family); 1179 DEF_FIELD(symval, x86_cpu_id, model); 1180 DEF_FIELD(symval, x86_cpu_id, vendor); 1181 1182 strcpy(alias, "cpu:type:x86,"); 1183 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor); 1184 ADD(alias, "fam", family != X86_FAMILY_ANY, family); 1185 ADD(alias, "mod", model != X86_MODEL_ANY, model); 1186 strcat(alias, ":feature:*"); 1187 if (feature != X86_FEATURE_ANY) 1188 sprintf(alias + strlen(alias), "%04X*", feature); 1189 return 1; 1190 } 1191 ADD_TO_DEVTABLE("x86cpu", x86_cpu_id, do_x86cpu_entry); 1192 1193 /* LOOKS like cpu:type:*:feature:*FEAT* */ 1194 static int do_cpu_entry(const char *filename, void *symval, char *alias) 1195 { 1196 DEF_FIELD(symval, cpu_feature, feature); 1197 1198 sprintf(alias, "cpu:type:*:feature:*%04X*", feature); 1199 return 1; 1200 } 1201 ADD_TO_DEVTABLE("cpu", cpu_feature, do_cpu_entry); 1202 1203 /* Looks like: mei:S:uuid */ 1204 static int do_mei_entry(const char *filename, void *symval, 1205 char *alias) 1206 { 1207 DEF_FIELD_ADDR(symval, mei_cl_device_id, name); 1208 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid); 1209 1210 sprintf(alias, MEI_CL_MODULE_PREFIX); 1211 sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*"); 1212 add_uuid(alias, *uuid); 1213 1214 strcat(alias, ":*"); 1215 1216 return 1; 1217 } 1218 ADD_TO_DEVTABLE("mei", mei_cl_device_id, do_mei_entry); 1219 1220 /* Looks like: rapidio:vNdNavNadN */ 1221 static int do_rio_entry(const char *filename, 1222 void *symval, char *alias) 1223 { 1224 DEF_FIELD(symval, rio_device_id, did); 1225 DEF_FIELD(symval, rio_device_id, vid); 1226 DEF_FIELD(symval, rio_device_id, asm_did); 1227 DEF_FIELD(symval, rio_device_id, asm_vid); 1228 1229 strcpy(alias, "rapidio:"); 1230 ADD(alias, "v", vid != RIO_ANY_ID, vid); 1231 ADD(alias, "d", did != RIO_ANY_ID, did); 1232 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid); 1233 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did); 1234 1235 add_wildcard(alias); 1236 return 1; 1237 } 1238 ADD_TO_DEVTABLE("rapidio", rio_device_id, do_rio_entry); 1239 1240 /* Looks like: ulpi:vNpN */ 1241 static int do_ulpi_entry(const char *filename, void *symval, 1242 char *alias) 1243 { 1244 DEF_FIELD(symval, ulpi_device_id, vendor); 1245 DEF_FIELD(symval, ulpi_device_id, product); 1246 1247 sprintf(alias, "ulpi:v%04xp%04x", vendor, product); 1248 1249 return 1; 1250 } 1251 ADD_TO_DEVTABLE("ulpi", ulpi_device_id, do_ulpi_entry); 1252 1253 /* Does namelen bytes of name exactly match the symbol? */ 1254 static bool sym_is(const char *name, unsigned namelen, const char *symbol) 1255 { 1256 if (namelen != strlen(symbol)) 1257 return false; 1258 1259 return memcmp(name, symbol, namelen) == 0; 1260 } 1261 1262 static void do_table(void *symval, unsigned long size, 1263 unsigned long id_size, 1264 const char *device_id, 1265 void *function, 1266 struct module *mod) 1267 { 1268 unsigned int i; 1269 char alias[500]; 1270 int (*do_entry)(const char *, void *entry, char *alias) = function; 1271 1272 device_id_check(mod->name, device_id, size, id_size, symval); 1273 /* Leave last one: it's the terminator. */ 1274 size -= id_size; 1275 1276 for (i = 0; i < size; i += id_size) { 1277 if (do_entry(mod->name, symval+i, alias)) { 1278 buf_printf(&mod->dev_table_buf, 1279 "MODULE_ALIAS(\"%s\");\n", alias); 1280 } 1281 } 1282 } 1283 1284 /* Create MODULE_ALIAS() statements. 1285 * At this time, we cannot write the actual output C source yet, 1286 * so we write into the mod->dev_table_buf buffer. */ 1287 void handle_moddevtable(struct module *mod, struct elf_info *info, 1288 Elf_Sym *sym, const char *symname) 1289 { 1290 void *symval; 1291 char *zeros = NULL; 1292 const char *name, *identifier; 1293 unsigned int namelen; 1294 1295 /* We're looking for a section relative symbol */ 1296 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections) 1297 return; 1298 1299 /* We're looking for an object */ 1300 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT) 1301 return; 1302 1303 /* All our symbols are of form <prefix>__mod_<name>__<identifier>_device_table. */ 1304 name = strstr(symname, "__mod_"); 1305 if (!name) 1306 return; 1307 name += strlen("__mod_"); 1308 namelen = strlen(name); 1309 if (namelen < strlen("_device_table")) 1310 return; 1311 if (strcmp(name + namelen - strlen("_device_table"), "_device_table")) 1312 return; 1313 identifier = strstr(name, "__"); 1314 if (!identifier) 1315 return; 1316 namelen = identifier - name; 1317 1318 /* Handle all-NULL symbols allocated into .bss */ 1319 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) { 1320 zeros = calloc(1, sym->st_size); 1321 symval = zeros; 1322 } else { 1323 symval = (void *)info->hdr 1324 + info->sechdrs[get_secindex(info, sym)].sh_offset 1325 + sym->st_value; 1326 } 1327 1328 /* First handle the "special" cases */ 1329 if (sym_is(name, namelen, "usb")) 1330 do_usb_table(symval, sym->st_size, mod); 1331 else if (sym_is(name, namelen, "pnp")) 1332 do_pnp_device_entry(symval, sym->st_size, mod); 1333 else if (sym_is(name, namelen, "pnp_card")) 1334 do_pnp_card_entries(symval, sym->st_size, mod); 1335 else { 1336 struct devtable **p; 1337 INIT_SECTION(__devtable); 1338 1339 for (p = __start___devtable; p < __stop___devtable; p++) { 1340 if (sym_is(name, namelen, (*p)->device_id)) { 1341 do_table(symval, sym->st_size, (*p)->id_size, 1342 (*p)->device_id, (*p)->function, mod); 1343 break; 1344 } 1345 } 1346 } 1347 free(zeros); 1348 } 1349 1350 /* Now add out buffered information to the generated C source */ 1351 void add_moddevtable(struct buffer *buf, struct module *mod) 1352 { 1353 buf_printf(buf, "\n"); 1354 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos); 1355 free(mod->dev_table_buf.p); 1356 } 1357