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.
5 * Copyright 2002-2003 Rusty Russell, IBM Corporation
6 * 2003 Kai Germaschewski
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
14 #include "devicetable-offsets.h"
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
22 typedef Elf64_Addr kernel_ulong_t;
23 #define BITS_PER_LONG 64
34 typedef uint32_t __u32;
35 typedef uint16_t __u16;
36 typedef unsigned char __u8;
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"
46 /* This array collects all instances that use the generic do_table */
48 const char *device_id; /* name of table, __mod_<name>__*_device_table. */
49 unsigned long id_size;
50 int (*do_entry)(const char *filename, void *symval, char *alias);
53 /* Define a variable f that holds the value of field f of struct devid
56 #define DEF_FIELD(m, devid, f) \
57 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f))
58 /* Define a variable f that holds the address of field f of struct devid
59 * based at address m. Due to the way typeof works, for a field of type
60 * T[N] the variable has type T(*)[N], _not_ T*.
62 #define DEF_FIELD_ADDR(m, devid, f) \
63 typeof(((struct devid *)0)->f) *f = ((m) + OFF_##devid##_##f)
65 #define ADD(str, sep, cond, field) \
69 sprintf(str + strlen(str), \
70 sizeof(field) == 1 ? "%02X" : \
71 sizeof(field) == 2 ? "%04X" : \
72 sizeof(field) == 4 ? "%08X" : "", \
75 sprintf(str + strlen(str), "*"); \
78 /* End in a wildcard, for future extension */
79 static inline void add_wildcard(char *str)
81 int len = strlen(str);
83 if (str[len - 1] != '*')
84 strcat(str + len, "*");
87 static inline void add_uuid(char *str, uuid_le uuid)
89 int len = strlen(str);
91 sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
92 uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0],
93 uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6],
94 uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11],
95 uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]);
99 * Check that sizeof(device_id type) are consistent with size of section
100 * in .o file. If in-consistent then userspace and kernel does not agree
101 * on actual size which is a bug.
102 * Also verify that the final entry in the table is all zeros.
103 * Ignore both checks if build host differ from target host and size differs.
105 static void device_id_check(const char *modname, const char *device_id,
106 unsigned long size, unsigned long id_size,
111 if (size % id_size || size < id_size) {
112 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
114 "section __mod_%s__<identifier>_device_table=%lu.\n"
115 "Fix definition of struct %s_device_id "
116 "in mod_devicetable.h\n",
117 modname, device_id, id_size, device_id, size, device_id);
119 /* Verify last one is a terminator */
120 for (i = 0; i < id_size; i++ ) {
121 if (*(uint8_t*)(symval+size-id_size+i)) {
122 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
123 "The last of %lu is:\n",
124 modname, device_id, id_size, size / id_size);
125 for (i = 0; i < id_size; i++ )
126 fprintf(stderr,"0x%02x ",
127 *(uint8_t*)(symval+size-id_size+i) );
128 fprintf(stderr,"\n");
129 fatal("%s: struct %s_device_id is not terminated "
130 "with a NULL entry!\n", modname, device_id);
135 /* USB is special because the bcdDevice can be matched against a numeric range */
136 /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
137 static void do_usb_entry(void *symval,
138 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
139 unsigned char range_lo, unsigned char range_hi,
140 unsigned char max, struct module *mod)
143 DEF_FIELD(symval, usb_device_id, match_flags);
144 DEF_FIELD(symval, usb_device_id, idVendor);
145 DEF_FIELD(symval, usb_device_id, idProduct);
146 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
147 DEF_FIELD(symval, usb_device_id, bDeviceClass);
148 DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
149 DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
150 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
151 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
152 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
153 DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
155 strcpy(alias, "usb:");
156 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
158 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
162 if (bcdDevice_initial_digits)
163 sprintf(alias + strlen(alias), "%0*X",
164 bcdDevice_initial_digits, bcdDevice_initial);
165 if (range_lo == range_hi)
166 sprintf(alias + strlen(alias), "%X", range_lo);
167 else if (range_lo > 0 || range_hi < max) {
168 if (range_lo > 0x9 || range_hi < 0xA)
169 sprintf(alias + strlen(alias),
174 sprintf(alias + strlen(alias),
175 range_lo < 0x9 ? "[%X-9" : "[%X",
177 sprintf(alias + strlen(alias),
178 range_hi > 0xA ? "A-%X]" : "%X]",
182 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
185 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
187 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
189 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
191 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
193 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
195 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
197 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
201 buf_printf(&mod->dev_table_buf,
202 "MODULE_ALIAS(\"%s\");\n", alias);
205 /* Handles increment/decrement of BCD formatted integers */
206 /* Returns the previous value, so it works like i++ or i-- */
207 static unsigned int incbcd(unsigned int *bcd,
212 unsigned int init = *bcd, i, j;
213 unsigned long long c, dec = 0;
215 /* If bcd is not in BCD format, just increment */
221 /* Convert BCD to Decimal */
222 for (i=0 ; i < chars ; i++) {
223 c = (*bcd >> (i << 2)) & 0xf;
224 c = c > 9 ? 9 : c; /* force to bcd just in case */
225 for (j=0 ; j < i ; j++)
230 /* Do our increment/decrement */
234 /* Convert back to BCD */
235 for (i=0 ; i < chars ; i++) {
236 for (c=1,j=0 ; j < i ; j++)
239 *bcd += c << (i << 2);
244 static void do_usb_entry_multi(void *symval, struct module *mod)
246 unsigned int devlo, devhi;
247 unsigned char chi, clo, max;
250 DEF_FIELD(symval, usb_device_id, match_flags);
251 DEF_FIELD(symval, usb_device_id, idVendor);
252 DEF_FIELD(symval, usb_device_id, idProduct);
253 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
254 DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
255 DEF_FIELD(symval, usb_device_id, bDeviceClass);
256 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
258 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
260 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
261 bcdDevice_hi : ~0x0U;
263 /* Figure out if this entry is in bcd or hex format */
264 max = 0x9; /* Default to decimal format */
265 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
266 clo = (devlo >> (ndigits << 2)) & 0xf;
267 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
268 if (clo > max || chi > max) {
275 * Some modules (visor) have empty slots as placeholder for
276 * run-time specification that results in catch-all alias
278 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
281 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
282 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
285 if (chi > max) /* If we are in bcd mode, truncate if necessary */
290 if (devlo == devhi || !ndigits) {
291 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
297 incbcd(&devlo, 1, max,
298 sizeof(bcdDevice_lo) * 2),
299 ndigits, clo, max, max, mod);
303 incbcd(&devhi, -1, max,
304 sizeof(bcdDevice_lo) * 2),
305 ndigits, 0x0, chi, max, mod);
309 static void do_usb_table(void *symval, unsigned long size,
313 const unsigned long id_size = SIZE_usb_device_id;
315 device_id_check(mod->name, "usb", size, id_size, symval);
317 /* Leave last one: it's the terminator. */
320 for (i = 0; i < size; i += id_size)
321 do_usb_entry_multi(symval + i, mod);
324 static void do_of_entry_multi(void *symval, struct module *mod)
330 DEF_FIELD_ADDR(symval, of_device_id, name);
331 DEF_FIELD_ADDR(symval, of_device_id, type);
332 DEF_FIELD_ADDR(symval, of_device_id, compatible);
334 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
335 (*type)[0] ? *type : "*");
337 if ((*compatible)[0])
338 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
341 /* Replace all whitespace with underscores */
342 for (tmp = alias; tmp && *tmp; tmp++)
346 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
349 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
352 static void do_of_table(void *symval, unsigned long size,
356 const unsigned long id_size = SIZE_of_device_id;
358 device_id_check(mod->name, "of", size, id_size, symval);
360 /* Leave last one: it's the terminator. */
363 for (i = 0; i < size; i += id_size)
364 do_of_entry_multi(symval + i, mod);
367 /* Looks like: hid:bNvNpN */
368 static int do_hid_entry(const char *filename,
369 void *symval, char *alias)
371 DEF_FIELD(symval, hid_device_id, bus);
372 DEF_FIELD(symval, hid_device_id, group);
373 DEF_FIELD(symval, hid_device_id, vendor);
374 DEF_FIELD(symval, hid_device_id, product);
376 sprintf(alias, "hid:");
377 ADD(alias, "b", bus != HID_BUS_ANY, bus);
378 ADD(alias, "g", group != HID_GROUP_ANY, group);
379 ADD(alias, "v", vendor != HID_ANY_ID, vendor);
380 ADD(alias, "p", product != HID_ANY_ID, product);
385 /* Looks like: ieee1394:venNmoNspNverN */
386 static int do_ieee1394_entry(const char *filename,
387 void *symval, char *alias)
389 DEF_FIELD(symval, ieee1394_device_id, match_flags);
390 DEF_FIELD(symval, ieee1394_device_id, vendor_id);
391 DEF_FIELD(symval, ieee1394_device_id, model_id);
392 DEF_FIELD(symval, ieee1394_device_id, specifier_id);
393 DEF_FIELD(symval, ieee1394_device_id, version);
395 strcpy(alias, "ieee1394:");
396 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
398 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
400 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
402 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
409 /* Looks like: pci:vNdNsvNsdNbcNscNiN. */
410 static int do_pci_entry(const char *filename,
411 void *symval, char *alias)
413 /* Class field can be divided into these three. */
414 unsigned char baseclass, subclass, interface,
415 baseclass_mask, subclass_mask, interface_mask;
417 DEF_FIELD(symval, pci_device_id, vendor);
418 DEF_FIELD(symval, pci_device_id, device);
419 DEF_FIELD(symval, pci_device_id, subvendor);
420 DEF_FIELD(symval, pci_device_id, subdevice);
421 DEF_FIELD(symval, pci_device_id, class);
422 DEF_FIELD(symval, pci_device_id, class_mask);
424 strcpy(alias, "pci:");
425 ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
426 ADD(alias, "d", device != PCI_ANY_ID, device);
427 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
428 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
430 baseclass = (class) >> 16;
431 baseclass_mask = (class_mask) >> 16;
432 subclass = (class) >> 8;
433 subclass_mask = (class_mask) >> 8;
435 interface_mask = class_mask;
437 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
438 || (subclass_mask != 0 && subclass_mask != 0xFF)
439 || (interface_mask != 0 && interface_mask != 0xFF)) {
440 warn("Can't handle masks in %s:%04X\n",
441 filename, class_mask);
445 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
446 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
447 ADD(alias, "i", interface_mask == 0xFF, interface);
452 /* looks like: "ccw:tNmNdtNdmN" */
453 static int do_ccw_entry(const char *filename,
454 void *symval, char *alias)
456 DEF_FIELD(symval, ccw_device_id, match_flags);
457 DEF_FIELD(symval, ccw_device_id, cu_type);
458 DEF_FIELD(symval, ccw_device_id, cu_model);
459 DEF_FIELD(symval, ccw_device_id, dev_type);
460 DEF_FIELD(symval, ccw_device_id, dev_model);
462 strcpy(alias, "ccw:");
463 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
465 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
467 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
469 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
475 /* looks like: "ap:tN" */
476 static int do_ap_entry(const char *filename,
477 void *symval, char *alias)
479 DEF_FIELD(symval, ap_device_id, dev_type);
481 sprintf(alias, "ap:t%02X*", dev_type);
485 /* looks like: "css:tN" */
486 static int do_css_entry(const char *filename,
487 void *symval, char *alias)
489 DEF_FIELD(symval, css_device_id, type);
491 sprintf(alias, "css:t%01X", type);
495 /* Looks like: "serio:tyNprNidNexN" */
496 static int do_serio_entry(const char *filename,
497 void *symval, char *alias)
499 DEF_FIELD(symval, serio_device_id, type);
500 DEF_FIELD(symval, serio_device_id, proto);
501 DEF_FIELD(symval, serio_device_id, id);
502 DEF_FIELD(symval, serio_device_id, extra);
504 strcpy(alias, "serio:");
505 ADD(alias, "ty", type != SERIO_ANY, type);
506 ADD(alias, "pr", proto != SERIO_ANY, proto);
507 ADD(alias, "id", id != SERIO_ANY, id);
508 ADD(alias, "ex", extra != SERIO_ANY, extra);
514 /* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or
515 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if)
517 * NOTE: Each driver should use one of the following : _HID, _CIDs
518 * or _CLS. Also, bb, ss, and pp can be substituted with ??
519 * as don't care byte.
521 static int do_acpi_entry(const char *filename,
522 void *symval, char *alias)
524 DEF_FIELD_ADDR(symval, acpi_device_id, id);
525 DEF_FIELD_ADDR(symval, acpi_device_id, cls);
526 DEF_FIELD_ADDR(symval, acpi_device_id, cls_msk);
528 if (id && strlen((const char *)*id))
529 sprintf(alias, "acpi*:%s:*", *id);
531 int i, byte_shift, cnt = 0;
534 sprintf(&alias[cnt], "acpi*:");
536 for (i = 1; i <= 3; i++) {
537 byte_shift = 8 * (3-i);
538 msk = (*cls_msk >> byte_shift) & 0xFF;
540 sprintf(&alias[cnt], "%02x",
541 (*cls >> byte_shift) & 0xFF);
543 sprintf(&alias[cnt], "??");
546 sprintf(&alias[cnt], ":*");
551 /* looks like: "pnp:dD" */
552 static void do_pnp_device_entry(void *symval, unsigned long size,
555 const unsigned long id_size = SIZE_pnp_device_id;
556 const unsigned int count = (size / id_size)-1;
559 device_id_check(mod->name, "pnp", size, id_size, symval);
561 for (i = 0; i < count; i++) {
562 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id);
563 char acpi_id[sizeof(*id)];
566 buf_printf(&mod->dev_table_buf,
567 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
569 /* fix broken pnp bus lowercasing */
570 for (j = 0; j < sizeof(acpi_id); j++)
571 acpi_id[j] = toupper((*id)[j]);
572 buf_printf(&mod->dev_table_buf,
573 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
577 /* looks like: "pnp:dD" for every device of the card */
578 static void do_pnp_card_entries(void *symval, unsigned long size,
581 const unsigned long id_size = SIZE_pnp_card_device_id;
582 const unsigned int count = (size / id_size)-1;
585 device_id_check(mod->name, "pnp", size, id_size, symval);
587 for (i = 0; i < count; i++) {
589 DEF_FIELD_ADDR(symval + i*id_size, pnp_card_device_id, devs);
591 for (j = 0; j < PNP_MAX_DEVICES; j++) {
592 const char *id = (char *)(*devs)[j].id;
599 /* find duplicate, already added value */
600 for (i2 = 0; i2 < i && !dup; i2++) {
601 DEF_FIELD_ADDR(symval + i2*id_size, pnp_card_device_id, devs);
603 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
604 const char *id2 = (char *)(*devs)[j2].id;
609 if (!strcmp(id, id2)) {
616 /* add an individual alias for every device entry */
618 char acpi_id[PNP_ID_LEN];
621 buf_printf(&mod->dev_table_buf,
622 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
624 /* fix broken pnp bus lowercasing */
625 for (k = 0; k < sizeof(acpi_id); k++)
626 acpi_id[k] = toupper(id[k]);
627 buf_printf(&mod->dev_table_buf,
628 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
634 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
635 static int do_pcmcia_entry(const char *filename,
636 void *symval, char *alias)
639 DEF_FIELD(symval, pcmcia_device_id, match_flags);
640 DEF_FIELD(symval, pcmcia_device_id, manf_id);
641 DEF_FIELD(symval, pcmcia_device_id, card_id);
642 DEF_FIELD(symval, pcmcia_device_id, func_id);
643 DEF_FIELD(symval, pcmcia_device_id, function);
644 DEF_FIELD(symval, pcmcia_device_id, device_no);
645 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
647 for (i=0; i<4; i++) {
648 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]);
651 strcpy(alias, "pcmcia:");
652 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
654 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
656 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
658 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
660 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
662 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]);
663 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]);
664 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]);
665 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]);
671 static int do_vio_entry(const char *filename, void *symval,
675 DEF_FIELD_ADDR(symval, vio_device_id, type);
676 DEF_FIELD_ADDR(symval, vio_device_id, compat);
678 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
679 (*compat)[0] ? *compat : "*");
681 /* Replace all whitespace with underscores */
682 for (tmp = alias; tmp && *tmp; tmp++)
690 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
692 static void do_input(char *alias,
693 kernel_ulong_t *arr, unsigned int min, unsigned int max)
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);
704 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
705 static int do_input_entry(const char *filename, void *symval,
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);
723 sprintf(alias, "input:");
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);
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);
762 static int do_eisa_entry(const char *filename, void *symval,
765 DEF_FIELD_ADDR(symval, eisa_device_id, sig);
767 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig);
773 /* Looks like: parisc:tNhvNrevNsvN */
774 static int do_parisc_entry(const char *filename, void *symval,
777 DEF_FIELD(symval, parisc_device_id, hw_type);
778 DEF_FIELD(symval, parisc_device_id, hversion);
779 DEF_FIELD(symval, parisc_device_id, hversion_rev);
780 DEF_FIELD(symval, parisc_device_id, sversion);
782 strcpy(alias, "parisc:");
783 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
784 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
785 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
786 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
792 /* Looks like: sdio:cNvNdN. */
793 static int do_sdio_entry(const char *filename,
794 void *symval, char *alias)
796 DEF_FIELD(symval, sdio_device_id, class);
797 DEF_FIELD(symval, sdio_device_id, vendor);
798 DEF_FIELD(symval, sdio_device_id, device);
800 strcpy(alias, "sdio:");
801 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
802 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
803 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
808 /* Looks like: ssb:vNidNrevN. */
809 static int do_ssb_entry(const char *filename,
810 void *symval, char *alias)
812 DEF_FIELD(symval, ssb_device_id, vendor);
813 DEF_FIELD(symval, ssb_device_id, coreid);
814 DEF_FIELD(symval, ssb_device_id, revision);
816 strcpy(alias, "ssb:");
817 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
818 ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
819 ADD(alias, "rev", revision != SSB_ANY_REV, revision);
824 /* Looks like: bcma:mNidNrevNclN. */
825 static int do_bcma_entry(const char *filename,
826 void *symval, char *alias)
828 DEF_FIELD(symval, bcma_device_id, manuf);
829 DEF_FIELD(symval, bcma_device_id, id);
830 DEF_FIELD(symval, bcma_device_id, rev);
831 DEF_FIELD(symval, bcma_device_id, class);
833 strcpy(alias, "bcma:");
834 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
835 ADD(alias, "id", id != BCMA_ANY_ID, id);
836 ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
837 ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
842 /* Looks like: virtio:dNvN */
843 static int do_virtio_entry(const char *filename, void *symval,
846 DEF_FIELD(symval, virtio_device_id, device);
847 DEF_FIELD(symval, virtio_device_id, vendor);
849 strcpy(alias, "virtio:");
850 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
851 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
858 * Looks like: vmbus:guid
859 * Each byte of the guid will be represented by two hex characters
863 static int do_vmbus_entry(const char *filename, void *symval,
867 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
868 char guid_name[(sizeof(*guid) + 1) * 2];
870 for (i = 0; i < (sizeof(*guid) * 2); i += 2)
871 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2]));
873 strcpy(alias, "vmbus:");
874 strcat(alias, guid_name);
879 /* Looks like: i2c:S */
880 static int do_i2c_entry(const char *filename, void *symval,
883 DEF_FIELD_ADDR(symval, i2c_device_id, name);
884 sprintf(alias, I2C_MODULE_PREFIX "%s", *name);
889 /* Looks like: spi:S */
890 static int do_spi_entry(const char *filename, void *symval,
893 DEF_FIELD_ADDR(symval, spi_device_id, name);
894 sprintf(alias, SPI_MODULE_PREFIX "%s", *name);
899 static const struct dmifield {
903 { "bvn", DMI_BIOS_VENDOR },
904 { "bvr", DMI_BIOS_VERSION },
905 { "bd", DMI_BIOS_DATE },
906 { "svn", DMI_SYS_VENDOR },
907 { "pn", DMI_PRODUCT_NAME },
908 { "pvr", DMI_PRODUCT_VERSION },
909 { "rvn", DMI_BOARD_VENDOR },
910 { "rn", DMI_BOARD_NAME },
911 { "rvr", DMI_BOARD_VERSION },
912 { "cvn", DMI_CHASSIS_VENDOR },
913 { "ct", DMI_CHASSIS_TYPE },
914 { "cvr", DMI_CHASSIS_VERSION },
918 static void dmi_ascii_filter(char *d, const char *s)
920 /* Filter out characters we don't want to see in the modalias string */
922 if (*s > ' ' && *s < 127 && *s != ':')
929 static int do_dmi_entry(const char *filename, void *symval,
933 DEF_FIELD_ADDR(symval, dmi_system_id, matches);
934 sprintf(alias, "dmi*");
936 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
937 for (j = 0; j < 4; j++) {
938 if ((*matches)[j].slot &&
939 (*matches)[j].slot == dmi_fields[i].field) {
940 sprintf(alias + strlen(alias), ":%s*",
941 dmi_fields[i].prefix);
942 dmi_ascii_filter(alias + strlen(alias),
943 (*matches)[j].substr);
953 static int do_platform_entry(const char *filename,
954 void *symval, char *alias)
956 DEF_FIELD_ADDR(symval, platform_device_id, name);
957 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name);
961 static int do_mdio_entry(const char *filename,
962 void *symval, char *alias)
965 DEF_FIELD(symval, mdio_device_id, phy_id);
966 DEF_FIELD(symval, mdio_device_id, phy_id_mask);
968 alias += sprintf(alias, MDIO_MODULE_PREFIX);
970 for (i = 0; i < 32; i++) {
971 if (!((phy_id_mask >> (31-i)) & 1))
973 else if ((phy_id >> (31-i)) & 1)
979 /* Terminate the string */
985 /* Looks like: zorro:iN. */
986 static int do_zorro_entry(const char *filename, void *symval,
989 DEF_FIELD(symval, zorro_device_id, id);
990 strcpy(alias, "zorro:");
991 ADD(alias, "i", id != ZORRO_WILDCARD, id);
995 /* looks like: "pnp:dD" */
996 static int do_isapnp_entry(const char *filename,
997 void *symval, char *alias)
999 DEF_FIELD(symval, isapnp_device_id, vendor);
1000 DEF_FIELD(symval, isapnp_device_id, function);
1001 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
1002 'A' + ((vendor >> 2) & 0x3f) - 1,
1003 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
1004 'A' + ((vendor >> 8) & 0x1f) - 1,
1005 (function >> 4) & 0x0f, function & 0x0f,
1006 (function >> 12) & 0x0f, (function >> 8) & 0x0f);
1010 /* Looks like: "ipack:fNvNdN". */
1011 static int do_ipack_entry(const char *filename,
1012 void *symval, char *alias)
1014 DEF_FIELD(symval, ipack_device_id, format);
1015 DEF_FIELD(symval, ipack_device_id, vendor);
1016 DEF_FIELD(symval, ipack_device_id, device);
1017 strcpy(alias, "ipack:");
1018 ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
1019 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
1020 ADD(alias, "d", device != IPACK_ANY_ID, device);
1021 add_wildcard(alias);
1026 * Append a match expression for a single masked hex digit.
1027 * outp points to a pointer to the character at which to append.
1028 * *outp is updated on return to point just after the appended text,
1029 * to facilitate further appending.
1031 static void append_nibble_mask(char **outp,
1032 unsigned int nibble, unsigned int mask)
1043 p += sprintf(p, "%X", nibble);
1048 * Dumbly emit a match pattern for all possible matching
1049 * digits. This could be improved in some cases using ranges,
1050 * but it has the advantage of being trivially correct, and is
1054 for (i = 0; i < 0x10; i++)
1055 if ((i & mask) == nibble)
1056 p += sprintf(p, "%X", i);
1060 /* Ensure that the string remains NUL-terminated: */
1063 /* Advance the caller's end-of-string pointer: */
1068 * looks like: "amba:dN"
1070 * N is exactly 8 digits, where each is an upper-case hex digit, or
1071 * a ? or [] pattern matching exactly one digit.
1073 static int do_amba_entry(const char *filename,
1074 void *symval, char *alias)
1078 DEF_FIELD(symval, amba_id, id);
1079 DEF_FIELD(symval, amba_id, mask);
1081 if ((id & mask) != id)
1082 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1083 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1084 filename, id, mask);
1086 p += sprintf(alias, "amba:d");
1087 for (digit = 0; digit < 8; digit++)
1088 append_nibble_mask(&p,
1089 (id >> (4 * (7 - digit))) & 0xf,
1090 (mask >> (4 * (7 - digit))) & 0xf);
1096 * looks like: "mipscdmm:tN"
1098 * N is exactly 2 digits, where each is an upper-case hex digit, or
1099 * a ? or [] pattern matching exactly one digit.
1101 static int do_mips_cdmm_entry(const char *filename,
1102 void *symval, char *alias)
1104 DEF_FIELD(symval, mips_cdmm_device_id, type);
1106 sprintf(alias, "mipscdmm:t%02X*", type);
1110 /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
1111 * All fields are numbers. It would be nicer to use strings for vendor
1112 * and feature, but getting those out of the build system here is too
1116 static int do_x86cpu_entry(const char *filename, void *symval,
1119 DEF_FIELD(symval, x86_cpu_id, feature);
1120 DEF_FIELD(symval, x86_cpu_id, family);
1121 DEF_FIELD(symval, x86_cpu_id, model);
1122 DEF_FIELD(symval, x86_cpu_id, vendor);
1124 strcpy(alias, "cpu:type:x86,");
1125 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
1126 ADD(alias, "fam", family != X86_FAMILY_ANY, family);
1127 ADD(alias, "mod", model != X86_MODEL_ANY, model);
1128 strcat(alias, ":feature:*");
1129 if (feature != X86_FEATURE_ANY)
1130 sprintf(alias + strlen(alias), "%04X*", feature);
1134 /* LOOKS like cpu:type:*:feature:*FEAT* */
1135 static int do_cpu_entry(const char *filename, void *symval, char *alias)
1137 DEF_FIELD(symval, cpu_feature, feature);
1139 sprintf(alias, "cpu:type:*:feature:*%04X*", feature);
1143 /* Looks like: mei:S:uuid:N:* */
1144 static int do_mei_entry(const char *filename, void *symval,
1147 DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
1148 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid);
1149 DEF_FIELD(symval, mei_cl_device_id, version);
1151 sprintf(alias, MEI_CL_MODULE_PREFIX);
1152 sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*");
1153 add_uuid(alias, *uuid);
1154 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version);
1156 strcat(alias, ":*");
1161 /* Looks like: rapidio:vNdNavNadN */
1162 static int do_rio_entry(const char *filename,
1163 void *symval, char *alias)
1165 DEF_FIELD(symval, rio_device_id, did);
1166 DEF_FIELD(symval, rio_device_id, vid);
1167 DEF_FIELD(symval, rio_device_id, asm_did);
1168 DEF_FIELD(symval, rio_device_id, asm_vid);
1170 strcpy(alias, "rapidio:");
1171 ADD(alias, "v", vid != RIO_ANY_ID, vid);
1172 ADD(alias, "d", did != RIO_ANY_ID, did);
1173 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
1174 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
1176 add_wildcard(alias);
1180 /* Looks like: ulpi:vNpN */
1181 static int do_ulpi_entry(const char *filename, void *symval,
1184 DEF_FIELD(symval, ulpi_device_id, vendor);
1185 DEF_FIELD(symval, ulpi_device_id, product);
1187 sprintf(alias, "ulpi:v%04xp%04x", vendor, product);
1192 /* Looks like: hdaudio:vNrNaN */
1193 static int do_hda_entry(const char *filename, void *symval, char *alias)
1195 DEF_FIELD(symval, hda_device_id, vendor_id);
1196 DEF_FIELD(symval, hda_device_id, rev_id);
1197 DEF_FIELD(symval, hda_device_id, api_version);
1199 strcpy(alias, "hdaudio:");
1200 ADD(alias, "v", vendor_id != 0, vendor_id);
1201 ADD(alias, "r", rev_id != 0, rev_id);
1202 ADD(alias, "a", api_version != 0, api_version);
1204 add_wildcard(alias);
1208 /* Looks like: fsl-mc:vNdN */
1209 static int do_fsl_mc_entry(const char *filename, void *symval,
1212 DEF_FIELD(symval, fsl_mc_device_id, vendor);
1213 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type);
1215 sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type);
1219 /* Does namelen bytes of name exactly match the symbol? */
1220 static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1222 if (namelen != strlen(symbol))
1225 return memcmp(name, symbol, namelen) == 0;
1228 static void do_table(void *symval, unsigned long size,
1229 unsigned long id_size,
1230 const char *device_id,
1231 int (*do_entry)(const char *filename, void *symval, char *alias),
1237 device_id_check(mod->name, device_id, size, id_size, symval);
1238 /* Leave last one: it's the terminator. */
1241 for (i = 0; i < size; i += id_size) {
1242 if (do_entry(mod->name, symval+i, alias)) {
1243 buf_printf(&mod->dev_table_buf,
1244 "MODULE_ALIAS(\"%s\");\n", alias);
1249 static const struct devtable devtable[] = {
1250 {"hid", SIZE_hid_device_id, do_hid_entry},
1251 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry},
1252 {"pci", SIZE_pci_device_id, do_pci_entry},
1253 {"ccw", SIZE_ccw_device_id, do_ccw_entry},
1254 {"ap", SIZE_ap_device_id, do_ap_entry},
1255 {"css", SIZE_css_device_id, do_css_entry},
1256 {"serio", SIZE_serio_device_id, do_serio_entry},
1257 {"acpi", SIZE_acpi_device_id, do_acpi_entry},
1258 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry},
1259 {"vio", SIZE_vio_device_id, do_vio_entry},
1260 {"input", SIZE_input_device_id, do_input_entry},
1261 {"eisa", SIZE_eisa_device_id, do_eisa_entry},
1262 {"parisc", SIZE_parisc_device_id, do_parisc_entry},
1263 {"sdio", SIZE_sdio_device_id, do_sdio_entry},
1264 {"ssb", SIZE_ssb_device_id, do_ssb_entry},
1265 {"bcma", SIZE_bcma_device_id, do_bcma_entry},
1266 {"virtio", SIZE_virtio_device_id, do_virtio_entry},
1267 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry},
1268 {"i2c", SIZE_i2c_device_id, do_i2c_entry},
1269 {"spi", SIZE_spi_device_id, do_spi_entry},
1270 {"dmi", SIZE_dmi_system_id, do_dmi_entry},
1271 {"platform", SIZE_platform_device_id, do_platform_entry},
1272 {"mdio", SIZE_mdio_device_id, do_mdio_entry},
1273 {"zorro", SIZE_zorro_device_id, do_zorro_entry},
1274 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry},
1275 {"ipack", SIZE_ipack_device_id, do_ipack_entry},
1276 {"amba", SIZE_amba_id, do_amba_entry},
1277 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry},
1278 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry},
1279 {"cpu", SIZE_cpu_feature, do_cpu_entry},
1280 {"mei", SIZE_mei_cl_device_id, do_mei_entry},
1281 {"rapidio", SIZE_rio_device_id, do_rio_entry},
1282 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry},
1283 {"hdaudio", SIZE_hda_device_id, do_hda_entry},
1284 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry},
1287 /* Create MODULE_ALIAS() statements.
1288 * At this time, we cannot write the actual output C source yet,
1289 * so we write into the mod->dev_table_buf buffer. */
1290 void handle_moddevtable(struct module *mod, struct elf_info *info,
1291 Elf_Sym *sym, const char *symname)
1295 const char *name, *identifier;
1296 unsigned int namelen;
1298 /* We're looking for a section relative symbol */
1299 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1302 /* We're looking for an object */
1303 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1306 /* All our symbols are of form <prefix>__mod_<name>__<identifier>_device_table. */
1307 name = strstr(symname, "__mod_");
1310 name += strlen("__mod_");
1311 namelen = strlen(name);
1312 if (namelen < strlen("_device_table"))
1314 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1316 identifier = strstr(name, "__");
1319 namelen = identifier - name;
1321 /* Handle all-NULL symbols allocated into .bss */
1322 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1323 zeros = calloc(1, sym->st_size);
1326 symval = (void *)info->hdr
1327 + info->sechdrs[get_secindex(info, sym)].sh_offset
1331 /* First handle the "special" cases */
1332 if (sym_is(name, namelen, "usb"))
1333 do_usb_table(symval, sym->st_size, mod);
1334 if (sym_is(name, namelen, "of"))
1335 do_of_table(symval, sym->st_size, mod);
1336 else if (sym_is(name, namelen, "pnp"))
1337 do_pnp_device_entry(symval, sym->st_size, mod);
1338 else if (sym_is(name, namelen, "pnp_card"))
1339 do_pnp_card_entries(symval, sym->st_size, mod);
1343 for (i = 0; i < ARRAY_SIZE(devtable); i++) {
1344 const struct devtable *p = &devtable[i];
1346 if (sym_is(name, namelen, p->device_id)) {
1347 do_table(symval, sym->st_size, p->id_size,
1348 p->device_id, p->do_entry, mod);
1356 /* Now add out buffered information to the generated C source */
1357 void add_moddevtable(struct buffer *buf, struct module *mod)
1359 buf_printf(buf, "\n");
1360 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1361 free(mod->dev_table_buf.p);