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 /* backwards compatibility, don't use in new code */
48 #define UUID_STRING_LEN 36
50 /* Big exception to the "don't include kernel headers into userspace, which
51 * even potentially has different endianness and word sizes, since
52 * we handle those differences explicitly below */
53 #include "../../include/linux/mod_devicetable.h"
55 /* This array collects all instances that use the generic do_table */
57 const char *device_id; /* name of table, __mod_<name>__*_device_table. */
58 unsigned long id_size;
59 int (*do_entry)(const char *filename, void *symval, char *alias);
62 /* Size of alias provided to do_entry functions */
63 #define ALIAS_SIZE 500
65 /* Define a variable f that holds the value of field f of struct devid
68 #define DEF_FIELD(m, devid, f) \
69 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f))
71 /* Define a variable v that holds the address of field f of struct devid
72 * based at address m. Due to the way typeof works, for a field of type
73 * T[N] the variable has type T(*)[N], _not_ T*.
75 #define DEF_FIELD_ADDR_VAR(m, devid, f, v) \
76 typeof(((struct devid *)0)->f) *v = ((m) + OFF_##devid##_##f)
78 /* Define a variable f that holds the address of field f of struct devid
79 * based at address m. Due to the way typeof works, for a field of type
80 * T[N] the variable has type T(*)[N], _not_ T*.
82 #define DEF_FIELD_ADDR(m, devid, f) \
83 DEF_FIELD_ADDR_VAR(m, devid, f, f)
85 #define ADD(str, sep, cond, field) \
89 sprintf(str + strlen(str), \
90 sizeof(field) == 1 ? "%02X" : \
91 sizeof(field) == 2 ? "%04X" : \
92 sizeof(field) == 4 ? "%08X" : "", \
95 sprintf(str + strlen(str), "*"); \
98 /* End in a wildcard, for future extension */
99 static inline void add_wildcard(char *str)
101 int len = strlen(str);
103 if (str[len - 1] != '*')
104 strcat(str + len, "*");
107 static inline void add_uuid(char *str, uuid_le uuid)
109 int len = strlen(str);
111 sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
112 uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0],
113 uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6],
114 uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11],
115 uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]);
118 static inline void add_guid(char *str, guid_t guid)
120 int len = strlen(str);
122 sprintf(str + len, "%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
123 guid.b[3], guid.b[2], guid.b[1], guid.b[0],
124 guid.b[5], guid.b[4], guid.b[7], guid.b[6],
125 guid.b[8], guid.b[9], guid.b[10], guid.b[11],
126 guid.b[12], guid.b[13], guid.b[14], guid.b[15]);
130 * Check that sizeof(device_id type) are consistent with size of section
131 * in .o file. If in-consistent then userspace and kernel does not agree
132 * on actual size which is a bug.
133 * Also verify that the final entry in the table is all zeros.
134 * Ignore both checks if build host differ from target host and size differs.
136 static void device_id_check(const char *modname, const char *device_id,
137 unsigned long size, unsigned long id_size,
142 if (size % id_size || size < id_size) {
143 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
145 "section __mod_%s__<identifier>_device_table=%lu.\n"
146 "Fix definition of struct %s_device_id "
147 "in mod_devicetable.h\n",
148 modname, device_id, id_size, device_id, size, device_id);
150 /* Verify last one is a terminator */
151 for (i = 0; i < id_size; i++ ) {
152 if (*(uint8_t*)(symval+size-id_size+i)) {
153 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
154 "The last of %lu is:\n",
155 modname, device_id, id_size, size / id_size);
156 for (i = 0; i < id_size; i++ )
157 fprintf(stderr,"0x%02x ",
158 *(uint8_t*)(symval+size-id_size+i) );
159 fprintf(stderr,"\n");
160 fatal("%s: struct %s_device_id is not terminated "
161 "with a NULL entry!\n", modname, device_id);
166 /* USB is special because the bcdDevice can be matched against a numeric range */
167 /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
168 static void do_usb_entry(void *symval,
169 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
170 unsigned char range_lo, unsigned char range_hi,
171 unsigned char max, struct module *mod)
174 DEF_FIELD(symval, usb_device_id, match_flags);
175 DEF_FIELD(symval, usb_device_id, idVendor);
176 DEF_FIELD(symval, usb_device_id, idProduct);
177 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
178 DEF_FIELD(symval, usb_device_id, bDeviceClass);
179 DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
180 DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
181 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
182 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
183 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
184 DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
186 strcpy(alias, "usb:");
187 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
189 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
193 if (bcdDevice_initial_digits)
194 sprintf(alias + strlen(alias), "%0*X",
195 bcdDevice_initial_digits, bcdDevice_initial);
196 if (range_lo == range_hi)
197 sprintf(alias + strlen(alias), "%X", range_lo);
198 else if (range_lo > 0 || range_hi < max) {
199 if (range_lo > 0x9 || range_hi < 0xA)
200 sprintf(alias + strlen(alias),
205 sprintf(alias + strlen(alias),
206 range_lo < 0x9 ? "[%X-9" : "[%X",
208 sprintf(alias + strlen(alias),
209 range_hi > 0xA ? "A-%X]" : "%X]",
213 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
216 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
218 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
220 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
222 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
224 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
226 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
228 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
232 buf_printf(&mod->dev_table_buf,
233 "MODULE_ALIAS(\"%s\");\n", alias);
236 /* Handles increment/decrement of BCD formatted integers */
237 /* Returns the previous value, so it works like i++ or i-- */
238 static unsigned int incbcd(unsigned int *bcd,
243 unsigned int init = *bcd, i, j;
244 unsigned long long c, dec = 0;
246 /* If bcd is not in BCD format, just increment */
252 /* Convert BCD to Decimal */
253 for (i=0 ; i < chars ; i++) {
254 c = (*bcd >> (i << 2)) & 0xf;
255 c = c > 9 ? 9 : c; /* force to bcd just in case */
256 for (j=0 ; j < i ; j++)
261 /* Do our increment/decrement */
265 /* Convert back to BCD */
266 for (i=0 ; i < chars ; i++) {
267 for (c=1,j=0 ; j < i ; j++)
270 *bcd += c << (i << 2);
275 static void do_usb_entry_multi(void *symval, struct module *mod)
277 unsigned int devlo, devhi;
278 unsigned char chi, clo, max;
281 DEF_FIELD(symval, usb_device_id, match_flags);
282 DEF_FIELD(symval, usb_device_id, idVendor);
283 DEF_FIELD(symval, usb_device_id, idProduct);
284 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
285 DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
286 DEF_FIELD(symval, usb_device_id, bDeviceClass);
287 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
289 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
291 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
292 bcdDevice_hi : ~0x0U;
294 /* Figure out if this entry is in bcd or hex format */
295 max = 0x9; /* Default to decimal format */
296 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
297 clo = (devlo >> (ndigits << 2)) & 0xf;
298 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
299 if (clo > max || chi > max) {
306 * Some modules (visor) have empty slots as placeholder for
307 * run-time specification that results in catch-all alias
309 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
312 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
313 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
316 if (chi > max) /* If we are in bcd mode, truncate if necessary */
321 if (devlo == devhi || !ndigits) {
322 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
328 incbcd(&devlo, 1, max,
329 sizeof(bcdDevice_lo) * 2),
330 ndigits, clo, max, max, mod);
334 incbcd(&devhi, -1, max,
335 sizeof(bcdDevice_lo) * 2),
336 ndigits, 0x0, chi, max, mod);
340 static void do_usb_table(void *symval, unsigned long size,
344 const unsigned long id_size = SIZE_usb_device_id;
346 device_id_check(mod->name, "usb", size, id_size, symval);
348 /* Leave last one: it's the terminator. */
351 for (i = 0; i < size; i += id_size)
352 do_usb_entry_multi(symval + i, mod);
355 static void do_of_entry_multi(void *symval, struct module *mod)
361 DEF_FIELD_ADDR(symval, of_device_id, name);
362 DEF_FIELD_ADDR(symval, of_device_id, type);
363 DEF_FIELD_ADDR(symval, of_device_id, compatible);
365 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
366 (*type)[0] ? *type : "*");
368 if ((*compatible)[0])
369 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
372 /* Replace all whitespace with underscores */
373 for (tmp = alias; tmp && *tmp; tmp++)
377 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
380 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
383 static void do_of_table(void *symval, unsigned long size,
387 const unsigned long id_size = SIZE_of_device_id;
389 device_id_check(mod->name, "of", size, id_size, symval);
391 /* Leave last one: it's the terminator. */
394 for (i = 0; i < size; i += id_size)
395 do_of_entry_multi(symval + i, mod);
398 /* Looks like: hid:bNvNpN */
399 static int do_hid_entry(const char *filename,
400 void *symval, char *alias)
402 DEF_FIELD(symval, hid_device_id, bus);
403 DEF_FIELD(symval, hid_device_id, group);
404 DEF_FIELD(symval, hid_device_id, vendor);
405 DEF_FIELD(symval, hid_device_id, product);
407 sprintf(alias, "hid:");
408 ADD(alias, "b", bus != HID_BUS_ANY, bus);
409 ADD(alias, "g", group != HID_GROUP_ANY, group);
410 ADD(alias, "v", vendor != HID_ANY_ID, vendor);
411 ADD(alias, "p", product != HID_ANY_ID, product);
416 /* Looks like: ieee1394:venNmoNspNverN */
417 static int do_ieee1394_entry(const char *filename,
418 void *symval, char *alias)
420 DEF_FIELD(symval, ieee1394_device_id, match_flags);
421 DEF_FIELD(symval, ieee1394_device_id, vendor_id);
422 DEF_FIELD(symval, ieee1394_device_id, model_id);
423 DEF_FIELD(symval, ieee1394_device_id, specifier_id);
424 DEF_FIELD(symval, ieee1394_device_id, version);
426 strcpy(alias, "ieee1394:");
427 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
429 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
431 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
433 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
440 /* Looks like: pci:vNdNsvNsdNbcNscNiN or <prefix>_pci:vNdNsvNsdNbcNscNiN. */
441 static int do_pci_entry(const char *filename,
442 void *symval, char *alias)
444 /* Class field can be divided into these three. */
445 unsigned char baseclass, subclass, interface,
446 baseclass_mask, subclass_mask, interface_mask;
448 DEF_FIELD(symval, pci_device_id, vendor);
449 DEF_FIELD(symval, pci_device_id, device);
450 DEF_FIELD(symval, pci_device_id, subvendor);
451 DEF_FIELD(symval, pci_device_id, subdevice);
452 DEF_FIELD(symval, pci_device_id, class);
453 DEF_FIELD(symval, pci_device_id, class_mask);
454 DEF_FIELD(symval, pci_device_id, override_only);
456 switch (override_only) {
458 strcpy(alias, "pci:");
460 case PCI_ID_F_VFIO_DRIVER_OVERRIDE:
461 strcpy(alias, "vfio_pci:");
464 warn("Unknown PCI driver_override alias %08X\n",
469 ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
470 ADD(alias, "d", device != PCI_ANY_ID, device);
471 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
472 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
474 baseclass = (class) >> 16;
475 baseclass_mask = (class_mask) >> 16;
476 subclass = (class) >> 8;
477 subclass_mask = (class_mask) >> 8;
479 interface_mask = class_mask;
481 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
482 || (subclass_mask != 0 && subclass_mask != 0xFF)
483 || (interface_mask != 0 && interface_mask != 0xFF)) {
484 warn("Can't handle masks in %s:%04X\n",
485 filename, class_mask);
489 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
490 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
491 ADD(alias, "i", interface_mask == 0xFF, interface);
496 /* looks like: "ccw:tNmNdtNdmN" */
497 static int do_ccw_entry(const char *filename,
498 void *symval, char *alias)
500 DEF_FIELD(symval, ccw_device_id, match_flags);
501 DEF_FIELD(symval, ccw_device_id, cu_type);
502 DEF_FIELD(symval, ccw_device_id, cu_model);
503 DEF_FIELD(symval, ccw_device_id, dev_type);
504 DEF_FIELD(symval, ccw_device_id, dev_model);
506 strcpy(alias, "ccw:");
507 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
509 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
511 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
513 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
519 /* looks like: "ap:tN" */
520 static int do_ap_entry(const char *filename,
521 void *symval, char *alias)
523 DEF_FIELD(symval, ap_device_id, dev_type);
525 sprintf(alias, "ap:t%02X*", dev_type);
529 /* looks like: "css:tN" */
530 static int do_css_entry(const char *filename,
531 void *symval, char *alias)
533 DEF_FIELD(symval, css_device_id, type);
535 sprintf(alias, "css:t%01X", type);
539 /* Looks like: "serio:tyNprNidNexN" */
540 static int do_serio_entry(const char *filename,
541 void *symval, char *alias)
543 DEF_FIELD(symval, serio_device_id, type);
544 DEF_FIELD(symval, serio_device_id, proto);
545 DEF_FIELD(symval, serio_device_id, id);
546 DEF_FIELD(symval, serio_device_id, extra);
548 strcpy(alias, "serio:");
549 ADD(alias, "ty", type != SERIO_ANY, type);
550 ADD(alias, "pr", proto != SERIO_ANY, proto);
551 ADD(alias, "id", id != SERIO_ANY, id);
552 ADD(alias, "ex", extra != SERIO_ANY, extra);
558 /* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or
559 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if)
561 * NOTE: Each driver should use one of the following : _HID, _CIDs
562 * or _CLS. Also, bb, ss, and pp can be substituted with ??
563 * as don't care byte.
565 static int do_acpi_entry(const char *filename,
566 void *symval, char *alias)
568 DEF_FIELD_ADDR(symval, acpi_device_id, id);
569 DEF_FIELD_ADDR(symval, acpi_device_id, cls);
570 DEF_FIELD_ADDR(symval, acpi_device_id, cls_msk);
572 if (id && strlen((const char *)*id))
573 sprintf(alias, "acpi*:%s:*", *id);
575 int i, byte_shift, cnt = 0;
578 sprintf(&alias[cnt], "acpi*:");
580 for (i = 1; i <= 3; i++) {
581 byte_shift = 8 * (3-i);
582 msk = (*cls_msk >> byte_shift) & 0xFF;
584 sprintf(&alias[cnt], "%02x",
585 (*cls >> byte_shift) & 0xFF);
587 sprintf(&alias[cnt], "??");
590 sprintf(&alias[cnt], ":*");
595 /* looks like: "pnp:dD" */
596 static void do_pnp_device_entry(void *symval, unsigned long size,
599 const unsigned long id_size = SIZE_pnp_device_id;
600 const unsigned int count = (size / id_size)-1;
603 device_id_check(mod->name, "pnp", size, id_size, symval);
605 for (i = 0; i < count; i++) {
606 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id);
607 char acpi_id[sizeof(*id)];
610 buf_printf(&mod->dev_table_buf,
611 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
613 /* fix broken pnp bus lowercasing */
614 for (j = 0; j < sizeof(acpi_id); j++)
615 acpi_id[j] = toupper((*id)[j]);
616 buf_printf(&mod->dev_table_buf,
617 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
621 /* looks like: "pnp:dD" for every device of the card */
622 static void do_pnp_card_entries(void *symval, unsigned long size,
625 const unsigned long id_size = SIZE_pnp_card_device_id;
626 const unsigned int count = (size / id_size)-1;
629 device_id_check(mod->name, "pnp", size, id_size, symval);
631 for (i = 0; i < count; i++) {
633 DEF_FIELD_ADDR(symval + i * id_size, pnp_card_device_id, devs);
635 for (j = 0; j < PNP_MAX_DEVICES; j++) {
636 const char *id = (char *)(*devs)[j].id;
643 /* find duplicate, already added value */
644 for (i2 = 0; i2 < i && !dup; i2++) {
645 DEF_FIELD_ADDR_VAR(symval + i2 * id_size,
649 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
651 (char *)(*devs_dup)[j2].id;
656 if (!strcmp(id, id2)) {
663 /* add an individual alias for every device entry */
665 char acpi_id[PNP_ID_LEN];
668 buf_printf(&mod->dev_table_buf,
669 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
671 /* fix broken pnp bus lowercasing */
672 for (k = 0; k < sizeof(acpi_id); k++)
673 acpi_id[k] = toupper(id[k]);
674 buf_printf(&mod->dev_table_buf,
675 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
681 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
682 static int do_pcmcia_entry(const char *filename,
683 void *symval, char *alias)
686 DEF_FIELD(symval, pcmcia_device_id, match_flags);
687 DEF_FIELD(symval, pcmcia_device_id, manf_id);
688 DEF_FIELD(symval, pcmcia_device_id, card_id);
689 DEF_FIELD(symval, pcmcia_device_id, func_id);
690 DEF_FIELD(symval, pcmcia_device_id, function);
691 DEF_FIELD(symval, pcmcia_device_id, device_no);
692 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
694 for (i=0; i<4; i++) {
695 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]);
698 strcpy(alias, "pcmcia:");
699 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
701 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
703 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
705 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
707 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
709 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]);
710 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]);
711 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]);
712 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]);
718 static int do_vio_entry(const char *filename, void *symval,
722 DEF_FIELD_ADDR(symval, vio_device_id, type);
723 DEF_FIELD_ADDR(symval, vio_device_id, compat);
725 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
726 (*compat)[0] ? *compat : "*");
728 /* Replace all whitespace with underscores */
729 for (tmp = alias; tmp && *tmp; tmp++)
737 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
739 static void do_input(char *alias,
740 kernel_ulong_t *arr, unsigned int min, unsigned int max)
744 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++)
745 arr[i] = TO_NATIVE(arr[i]);
746 for (i = min; i < max; i++)
747 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
748 sprintf(alias + strlen(alias), "%X,*", i);
751 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
752 static int do_input_entry(const char *filename, void *symval,
755 DEF_FIELD(symval, input_device_id, flags);
756 DEF_FIELD(symval, input_device_id, bustype);
757 DEF_FIELD(symval, input_device_id, vendor);
758 DEF_FIELD(symval, input_device_id, product);
759 DEF_FIELD(symval, input_device_id, version);
760 DEF_FIELD_ADDR(symval, input_device_id, evbit);
761 DEF_FIELD_ADDR(symval, input_device_id, keybit);
762 DEF_FIELD_ADDR(symval, input_device_id, relbit);
763 DEF_FIELD_ADDR(symval, input_device_id, absbit);
764 DEF_FIELD_ADDR(symval, input_device_id, mscbit);
765 DEF_FIELD_ADDR(symval, input_device_id, ledbit);
766 DEF_FIELD_ADDR(symval, input_device_id, sndbit);
767 DEF_FIELD_ADDR(symval, input_device_id, ffbit);
768 DEF_FIELD_ADDR(symval, input_device_id, swbit);
770 sprintf(alias, "input:");
772 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
773 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
774 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
775 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
777 sprintf(alias + strlen(alias), "-e*");
778 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
779 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
780 sprintf(alias + strlen(alias), "k*");
781 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
782 do_input(alias, *keybit,
783 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
784 INPUT_DEVICE_ID_KEY_MAX);
785 sprintf(alias + strlen(alias), "r*");
786 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
787 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
788 sprintf(alias + strlen(alias), "a*");
789 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
790 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
791 sprintf(alias + strlen(alias), "m*");
792 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
793 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
794 sprintf(alias + strlen(alias), "l*");
795 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
796 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
797 sprintf(alias + strlen(alias), "s*");
798 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
799 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
800 sprintf(alias + strlen(alias), "f*");
801 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
802 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
803 sprintf(alias + strlen(alias), "w*");
804 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
805 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
809 static int do_eisa_entry(const char *filename, void *symval,
812 DEF_FIELD_ADDR(symval, eisa_device_id, sig);
814 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig);
820 /* Looks like: parisc:tNhvNrevNsvN */
821 static int do_parisc_entry(const char *filename, void *symval,
824 DEF_FIELD(symval, parisc_device_id, hw_type);
825 DEF_FIELD(symval, parisc_device_id, hversion);
826 DEF_FIELD(symval, parisc_device_id, hversion_rev);
827 DEF_FIELD(symval, parisc_device_id, sversion);
829 strcpy(alias, "parisc:");
830 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
831 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
832 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
833 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
839 /* Looks like: sdio:cNvNdN. */
840 static int do_sdio_entry(const char *filename,
841 void *symval, char *alias)
843 DEF_FIELD(symval, sdio_device_id, class);
844 DEF_FIELD(symval, sdio_device_id, vendor);
845 DEF_FIELD(symval, sdio_device_id, device);
847 strcpy(alias, "sdio:");
848 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
849 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
850 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
855 /* Looks like: ssb:vNidNrevN. */
856 static int do_ssb_entry(const char *filename,
857 void *symval, char *alias)
859 DEF_FIELD(symval, ssb_device_id, vendor);
860 DEF_FIELD(symval, ssb_device_id, coreid);
861 DEF_FIELD(symval, ssb_device_id, revision);
863 strcpy(alias, "ssb:");
864 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
865 ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
866 ADD(alias, "rev", revision != SSB_ANY_REV, revision);
871 /* Looks like: bcma:mNidNrevNclN. */
872 static int do_bcma_entry(const char *filename,
873 void *symval, char *alias)
875 DEF_FIELD(symval, bcma_device_id, manuf);
876 DEF_FIELD(symval, bcma_device_id, id);
877 DEF_FIELD(symval, bcma_device_id, rev);
878 DEF_FIELD(symval, bcma_device_id, class);
880 strcpy(alias, "bcma:");
881 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
882 ADD(alias, "id", id != BCMA_ANY_ID, id);
883 ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
884 ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
889 /* Looks like: virtio:dNvN */
890 static int do_virtio_entry(const char *filename, void *symval,
893 DEF_FIELD(symval, virtio_device_id, device);
894 DEF_FIELD(symval, virtio_device_id, vendor);
896 strcpy(alias, "virtio:");
897 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
898 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
905 * Looks like: vmbus:guid
906 * Each byte of the guid will be represented by two hex characters
910 static int do_vmbus_entry(const char *filename, void *symval,
914 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
915 char guid_name[(sizeof(*guid) + 1) * 2];
917 for (i = 0; i < (sizeof(*guid) * 2); i += 2)
918 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2]));
920 strcpy(alias, "vmbus:");
921 strcat(alias, guid_name);
926 /* Looks like: rpmsg:S */
927 static int do_rpmsg_entry(const char *filename, void *symval,
930 DEF_FIELD_ADDR(symval, rpmsg_device_id, name);
931 sprintf(alias, RPMSG_DEVICE_MODALIAS_FMT, *name);
936 /* Looks like: i2c:S */
937 static int do_i2c_entry(const char *filename, void *symval,
940 DEF_FIELD_ADDR(symval, i2c_device_id, name);
941 sprintf(alias, I2C_MODULE_PREFIX "%s", *name);
946 static int do_i3c_entry(const char *filename, void *symval,
949 DEF_FIELD(symval, i3c_device_id, match_flags);
950 DEF_FIELD(symval, i3c_device_id, dcr);
951 DEF_FIELD(symval, i3c_device_id, manuf_id);
952 DEF_FIELD(symval, i3c_device_id, part_id);
953 DEF_FIELD(symval, i3c_device_id, extra_info);
955 strcpy(alias, "i3c:");
956 ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr);
957 ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id);
958 ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id);
959 ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info);
964 /* Looks like: spi:S */
965 static int do_spi_entry(const char *filename, void *symval,
968 DEF_FIELD_ADDR(symval, spi_device_id, name);
969 sprintf(alias, SPI_MODULE_PREFIX "%s", *name);
974 static const struct dmifield {
978 { "bvn", DMI_BIOS_VENDOR },
979 { "bvr", DMI_BIOS_VERSION },
980 { "bd", DMI_BIOS_DATE },
981 { "br", DMI_BIOS_RELEASE },
982 { "efr", DMI_EC_FIRMWARE_RELEASE },
983 { "svn", DMI_SYS_VENDOR },
984 { "pn", DMI_PRODUCT_NAME },
985 { "pvr", DMI_PRODUCT_VERSION },
986 { "rvn", DMI_BOARD_VENDOR },
987 { "rn", DMI_BOARD_NAME },
988 { "rvr", DMI_BOARD_VERSION },
989 { "cvn", DMI_CHASSIS_VENDOR },
990 { "ct", DMI_CHASSIS_TYPE },
991 { "cvr", DMI_CHASSIS_VERSION },
995 static void dmi_ascii_filter(char *d, const char *s)
997 /* Filter out characters we don't want to see in the modalias string */
999 if (*s > ' ' && *s < 127 && *s != ':')
1006 static int do_dmi_entry(const char *filename, void *symval,
1010 DEF_FIELD_ADDR(symval, dmi_system_id, matches);
1011 sprintf(alias, "dmi*");
1013 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
1014 for (j = 0; j < 4; j++) {
1015 if ((*matches)[j].slot &&
1016 (*matches)[j].slot == dmi_fields[i].field) {
1017 sprintf(alias + strlen(alias), ":%s*",
1018 dmi_fields[i].prefix);
1019 dmi_ascii_filter(alias + strlen(alias),
1020 (*matches)[j].substr);
1030 static int do_platform_entry(const char *filename,
1031 void *symval, char *alias)
1033 DEF_FIELD_ADDR(symval, platform_device_id, name);
1034 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name);
1038 static int do_mdio_entry(const char *filename,
1039 void *symval, char *alias)
1042 DEF_FIELD(symval, mdio_device_id, phy_id);
1043 DEF_FIELD(symval, mdio_device_id, phy_id_mask);
1045 alias += sprintf(alias, MDIO_MODULE_PREFIX);
1047 for (i = 0; i < 32; i++) {
1048 if (!((phy_id_mask >> (31-i)) & 1))
1050 else if ((phy_id >> (31-i)) & 1)
1056 /* Terminate the string */
1062 /* Looks like: zorro:iN. */
1063 static int do_zorro_entry(const char *filename, void *symval,
1066 DEF_FIELD(symval, zorro_device_id, id);
1067 strcpy(alias, "zorro:");
1068 ADD(alias, "i", id != ZORRO_WILDCARD, id);
1072 /* looks like: "pnp:dD" */
1073 static int do_isapnp_entry(const char *filename,
1074 void *symval, char *alias)
1076 DEF_FIELD(symval, isapnp_device_id, vendor);
1077 DEF_FIELD(symval, isapnp_device_id, function);
1078 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
1079 'A' + ((vendor >> 2) & 0x3f) - 1,
1080 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
1081 'A' + ((vendor >> 8) & 0x1f) - 1,
1082 (function >> 4) & 0x0f, function & 0x0f,
1083 (function >> 12) & 0x0f, (function >> 8) & 0x0f);
1087 /* Looks like: "ipack:fNvNdN". */
1088 static int do_ipack_entry(const char *filename,
1089 void *symval, char *alias)
1091 DEF_FIELD(symval, ipack_device_id, format);
1092 DEF_FIELD(symval, ipack_device_id, vendor);
1093 DEF_FIELD(symval, ipack_device_id, device);
1094 strcpy(alias, "ipack:");
1095 ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
1096 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
1097 ADD(alias, "d", device != IPACK_ANY_ID, device);
1098 add_wildcard(alias);
1103 * Append a match expression for a single masked hex digit.
1104 * outp points to a pointer to the character at which to append.
1105 * *outp is updated on return to point just after the appended text,
1106 * to facilitate further appending.
1108 static void append_nibble_mask(char **outp,
1109 unsigned int nibble, unsigned int mask)
1120 p += sprintf(p, "%X", nibble);
1125 * Dumbly emit a match pattern for all possible matching
1126 * digits. This could be improved in some cases using ranges,
1127 * but it has the advantage of being trivially correct, and is
1131 for (i = 0; i < 0x10; i++)
1132 if ((i & mask) == nibble)
1133 p += sprintf(p, "%X", i);
1137 /* Ensure that the string remains NUL-terminated: */
1140 /* Advance the caller's end-of-string pointer: */
1145 * looks like: "amba:dN"
1147 * N is exactly 8 digits, where each is an upper-case hex digit, or
1148 * a ? or [] pattern matching exactly one digit.
1150 static int do_amba_entry(const char *filename,
1151 void *symval, char *alias)
1155 DEF_FIELD(symval, amba_id, id);
1156 DEF_FIELD(symval, amba_id, mask);
1158 if ((id & mask) != id)
1159 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1160 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1161 filename, id, mask);
1163 p += sprintf(alias, "amba:d");
1164 for (digit = 0; digit < 8; digit++)
1165 append_nibble_mask(&p,
1166 (id >> (4 * (7 - digit))) & 0xf,
1167 (mask >> (4 * (7 - digit))) & 0xf);
1173 * looks like: "mipscdmm:tN"
1175 * N is exactly 2 digits, where each is an upper-case hex digit, or
1176 * a ? or [] pattern matching exactly one digit.
1178 static int do_mips_cdmm_entry(const char *filename,
1179 void *symval, char *alias)
1181 DEF_FIELD(symval, mips_cdmm_device_id, type);
1183 sprintf(alias, "mipscdmm:t%02X*", type);
1187 /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
1188 * All fields are numbers. It would be nicer to use strings for vendor
1189 * and feature, but getting those out of the build system here is too
1193 static int do_x86cpu_entry(const char *filename, void *symval,
1196 DEF_FIELD(symval, x86_cpu_id, feature);
1197 DEF_FIELD(symval, x86_cpu_id, family);
1198 DEF_FIELD(symval, x86_cpu_id, model);
1199 DEF_FIELD(symval, x86_cpu_id, vendor);
1201 strcpy(alias, "cpu:type:x86,");
1202 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
1203 ADD(alias, "fam", family != X86_FAMILY_ANY, family);
1204 ADD(alias, "mod", model != X86_MODEL_ANY, model);
1205 strcat(alias, ":feature:*");
1206 if (feature != X86_FEATURE_ANY)
1207 sprintf(alias + strlen(alias), "%04X*", feature);
1211 /* LOOKS like cpu:type:*:feature:*FEAT* */
1212 static int do_cpu_entry(const char *filename, void *symval, char *alias)
1214 DEF_FIELD(symval, cpu_feature, feature);
1216 sprintf(alias, "cpu:type:*:feature:*%04X*", feature);
1220 /* Looks like: mei:S:uuid:N:* */
1221 static int do_mei_entry(const char *filename, void *symval,
1224 DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
1225 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid);
1226 DEF_FIELD(symval, mei_cl_device_id, version);
1228 sprintf(alias, MEI_CL_MODULE_PREFIX);
1229 sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*");
1230 add_uuid(alias, *uuid);
1231 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version);
1233 strcat(alias, ":*");
1238 /* Looks like: rapidio:vNdNavNadN */
1239 static int do_rio_entry(const char *filename,
1240 void *symval, char *alias)
1242 DEF_FIELD(symval, rio_device_id, did);
1243 DEF_FIELD(symval, rio_device_id, vid);
1244 DEF_FIELD(symval, rio_device_id, asm_did);
1245 DEF_FIELD(symval, rio_device_id, asm_vid);
1247 strcpy(alias, "rapidio:");
1248 ADD(alias, "v", vid != RIO_ANY_ID, vid);
1249 ADD(alias, "d", did != RIO_ANY_ID, did);
1250 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
1251 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
1253 add_wildcard(alias);
1257 /* Looks like: ulpi:vNpN */
1258 static int do_ulpi_entry(const char *filename, void *symval,
1261 DEF_FIELD(symval, ulpi_device_id, vendor);
1262 DEF_FIELD(symval, ulpi_device_id, product);
1264 sprintf(alias, "ulpi:v%04xp%04x", vendor, product);
1269 /* Looks like: hdaudio:vNrNaN */
1270 static int do_hda_entry(const char *filename, void *symval, char *alias)
1272 DEF_FIELD(symval, hda_device_id, vendor_id);
1273 DEF_FIELD(symval, hda_device_id, rev_id);
1274 DEF_FIELD(symval, hda_device_id, api_version);
1276 strcpy(alias, "hdaudio:");
1277 ADD(alias, "v", vendor_id != 0, vendor_id);
1278 ADD(alias, "r", rev_id != 0, rev_id);
1279 ADD(alias, "a", api_version != 0, api_version);
1281 add_wildcard(alias);
1285 /* Looks like: sdw:mNpNvNcN */
1286 static int do_sdw_entry(const char *filename, void *symval, char *alias)
1288 DEF_FIELD(symval, sdw_device_id, mfg_id);
1289 DEF_FIELD(symval, sdw_device_id, part_id);
1290 DEF_FIELD(symval, sdw_device_id, sdw_version);
1291 DEF_FIELD(symval, sdw_device_id, class_id);
1293 strcpy(alias, "sdw:");
1294 ADD(alias, "m", mfg_id != 0, mfg_id);
1295 ADD(alias, "p", part_id != 0, part_id);
1296 ADD(alias, "v", sdw_version != 0, sdw_version);
1297 ADD(alias, "c", class_id != 0, class_id);
1299 add_wildcard(alias);
1303 /* Looks like: fsl-mc:vNdN */
1304 static int do_fsl_mc_entry(const char *filename, void *symval,
1307 DEF_FIELD(symval, fsl_mc_device_id, vendor);
1308 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type);
1310 sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type);
1314 /* Looks like: tbsvc:kSpNvNrN */
1315 static int do_tbsvc_entry(const char *filename, void *symval, char *alias)
1317 DEF_FIELD(symval, tb_service_id, match_flags);
1318 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key);
1319 DEF_FIELD(symval, tb_service_id, protocol_id);
1320 DEF_FIELD(symval, tb_service_id, protocol_version);
1321 DEF_FIELD(symval, tb_service_id, protocol_revision);
1323 strcpy(alias, "tbsvc:");
1324 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY)
1325 sprintf(alias + strlen(alias), "k%s", *protocol_key);
1327 strcat(alias + strlen(alias), "k*");
1328 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id);
1329 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION,
1331 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION,
1334 add_wildcard(alias);
1338 /* Looks like: typec:idNmN */
1339 static int do_typec_entry(const char *filename, void *symval, char *alias)
1341 DEF_FIELD(symval, typec_device_id, svid);
1342 DEF_FIELD(symval, typec_device_id, mode);
1344 sprintf(alias, "typec:id%04X", svid);
1345 ADD(alias, "m", mode != TYPEC_ANY_MODE, mode);
1350 /* Looks like: tee:uuid */
1351 static int do_tee_entry(const char *filename, void *symval, char *alias)
1353 DEF_FIELD(symval, tee_client_device_id, uuid);
1355 sprintf(alias, "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
1356 uuid.b[0], uuid.b[1], uuid.b[2], uuid.b[3], uuid.b[4],
1357 uuid.b[5], uuid.b[6], uuid.b[7], uuid.b[8], uuid.b[9],
1358 uuid.b[10], uuid.b[11], uuid.b[12], uuid.b[13], uuid.b[14],
1361 add_wildcard(alias);
1365 /* Looks like: wmi:guid */
1366 static int do_wmi_entry(const char *filename, void *symval, char *alias)
1369 DEF_FIELD_ADDR(symval, wmi_device_id, guid_string);
1371 if (strlen(*guid_string) != UUID_STRING_LEN) {
1372 warn("Invalid WMI device id 'wmi:%s' in '%s'\n",
1373 *guid_string, filename);
1377 len = snprintf(alias, ALIAS_SIZE, WMI_MODULE_PREFIX "%s", *guid_string);
1378 if (len < 0 || len >= ALIAS_SIZE) {
1379 warn("Could not generate all MODULE_ALIAS's in '%s'\n",
1386 /* Looks like: mhi:S */
1387 static int do_mhi_entry(const char *filename, void *symval, char *alias)
1389 DEF_FIELD_ADDR(symval, mhi_device_id, chan);
1390 sprintf(alias, MHI_DEVICE_MODALIAS_FMT, *chan);
1394 /* Looks like: ishtp:{guid} */
1395 static int do_ishtp_entry(const char *filename, void *symval, char *alias)
1397 DEF_FIELD(symval, ishtp_device_id, guid);
1399 strcpy(alias, ISHTP_MODULE_PREFIX "{");
1400 add_guid(alias, guid);
1406 static int do_auxiliary_entry(const char *filename, void *symval, char *alias)
1408 DEF_FIELD_ADDR(symval, auxiliary_device_id, name);
1409 sprintf(alias, AUXILIARY_MODULE_PREFIX "%s", *name);
1415 * Looks like: ssam:dNcNtNiNfN
1417 * N is exactly 2 digits, where each is an upper-case hex digit.
1419 static int do_ssam_entry(const char *filename, void *symval, char *alias)
1421 DEF_FIELD(symval, ssam_device_id, match_flags);
1422 DEF_FIELD(symval, ssam_device_id, domain);
1423 DEF_FIELD(symval, ssam_device_id, category);
1424 DEF_FIELD(symval, ssam_device_id, target);
1425 DEF_FIELD(symval, ssam_device_id, instance);
1426 DEF_FIELD(symval, ssam_device_id, function);
1428 sprintf(alias, "ssam:d%02Xc%02X", domain, category);
1429 ADD(alias, "t", match_flags & SSAM_MATCH_TARGET, target);
1430 ADD(alias, "i", match_flags & SSAM_MATCH_INSTANCE, instance);
1431 ADD(alias, "f", match_flags & SSAM_MATCH_FUNCTION, function);
1436 /* Looks like: dfl:tNfN */
1437 static int do_dfl_entry(const char *filename, void *symval, char *alias)
1439 DEF_FIELD(symval, dfl_device_id, type);
1440 DEF_FIELD(symval, dfl_device_id, feature_id);
1442 sprintf(alias, "dfl:t%04Xf%04X", type, feature_id);
1444 add_wildcard(alias);
1448 /* Does namelen bytes of name exactly match the symbol? */
1449 static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1451 if (namelen != strlen(symbol))
1454 return memcmp(name, symbol, namelen) == 0;
1457 static void do_table(void *symval, unsigned long size,
1458 unsigned long id_size,
1459 const char *device_id,
1460 int (*do_entry)(const char *filename, void *symval, char *alias),
1464 char alias[ALIAS_SIZE];
1466 device_id_check(mod->name, device_id, size, id_size, symval);
1467 /* Leave last one: it's the terminator. */
1470 for (i = 0; i < size; i += id_size) {
1471 if (do_entry(mod->name, symval+i, alias)) {
1472 buf_printf(&mod->dev_table_buf,
1473 "MODULE_ALIAS(\"%s\");\n", alias);
1478 static const struct devtable devtable[] = {
1479 {"hid", SIZE_hid_device_id, do_hid_entry},
1480 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry},
1481 {"pci", SIZE_pci_device_id, do_pci_entry},
1482 {"ccw", SIZE_ccw_device_id, do_ccw_entry},
1483 {"ap", SIZE_ap_device_id, do_ap_entry},
1484 {"css", SIZE_css_device_id, do_css_entry},
1485 {"serio", SIZE_serio_device_id, do_serio_entry},
1486 {"acpi", SIZE_acpi_device_id, do_acpi_entry},
1487 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry},
1488 {"vio", SIZE_vio_device_id, do_vio_entry},
1489 {"input", SIZE_input_device_id, do_input_entry},
1490 {"eisa", SIZE_eisa_device_id, do_eisa_entry},
1491 {"parisc", SIZE_parisc_device_id, do_parisc_entry},
1492 {"sdio", SIZE_sdio_device_id, do_sdio_entry},
1493 {"ssb", SIZE_ssb_device_id, do_ssb_entry},
1494 {"bcma", SIZE_bcma_device_id, do_bcma_entry},
1495 {"virtio", SIZE_virtio_device_id, do_virtio_entry},
1496 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry},
1497 {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry},
1498 {"i2c", SIZE_i2c_device_id, do_i2c_entry},
1499 {"i3c", SIZE_i3c_device_id, do_i3c_entry},
1500 {"spi", SIZE_spi_device_id, do_spi_entry},
1501 {"dmi", SIZE_dmi_system_id, do_dmi_entry},
1502 {"platform", SIZE_platform_device_id, do_platform_entry},
1503 {"mdio", SIZE_mdio_device_id, do_mdio_entry},
1504 {"zorro", SIZE_zorro_device_id, do_zorro_entry},
1505 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry},
1506 {"ipack", SIZE_ipack_device_id, do_ipack_entry},
1507 {"amba", SIZE_amba_id, do_amba_entry},
1508 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry},
1509 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry},
1510 {"cpu", SIZE_cpu_feature, do_cpu_entry},
1511 {"mei", SIZE_mei_cl_device_id, do_mei_entry},
1512 {"rapidio", SIZE_rio_device_id, do_rio_entry},
1513 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry},
1514 {"hdaudio", SIZE_hda_device_id, do_hda_entry},
1515 {"sdw", SIZE_sdw_device_id, do_sdw_entry},
1516 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry},
1517 {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry},
1518 {"typec", SIZE_typec_device_id, do_typec_entry},
1519 {"tee", SIZE_tee_client_device_id, do_tee_entry},
1520 {"wmi", SIZE_wmi_device_id, do_wmi_entry},
1521 {"mhi", SIZE_mhi_device_id, do_mhi_entry},
1522 {"auxiliary", SIZE_auxiliary_device_id, do_auxiliary_entry},
1523 {"ssam", SIZE_ssam_device_id, do_ssam_entry},
1524 {"dfl", SIZE_dfl_device_id, do_dfl_entry},
1525 {"ishtp", SIZE_ishtp_device_id, do_ishtp_entry},
1528 /* Create MODULE_ALIAS() statements.
1529 * At this time, we cannot write the actual output C source yet,
1530 * so we write into the mod->dev_table_buf buffer. */
1531 void handle_moddevtable(struct module *mod, struct elf_info *info,
1532 Elf_Sym *sym, const char *symname)
1536 const char *name, *identifier;
1537 unsigned int namelen;
1539 /* We're looking for a section relative symbol */
1540 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1543 /* We're looking for an object */
1544 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1547 /* All our symbols are of form __mod_<name>__<identifier>_device_table. */
1548 if (strncmp(symname, "__mod_", strlen("__mod_")))
1550 name = symname + strlen("__mod_");
1551 namelen = strlen(name);
1552 if (namelen < strlen("_device_table"))
1554 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1556 identifier = strstr(name, "__");
1559 namelen = identifier - name;
1561 /* Handle all-NULL symbols allocated into .bss */
1562 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1563 zeros = calloc(1, sym->st_size);
1566 symval = (void *)info->hdr
1567 + info->sechdrs[get_secindex(info, sym)].sh_offset
1571 /* First handle the "special" cases */
1572 if (sym_is(name, namelen, "usb"))
1573 do_usb_table(symval, sym->st_size, mod);
1574 if (sym_is(name, namelen, "of"))
1575 do_of_table(symval, sym->st_size, mod);
1576 else if (sym_is(name, namelen, "pnp"))
1577 do_pnp_device_entry(symval, sym->st_size, mod);
1578 else if (sym_is(name, namelen, "pnp_card"))
1579 do_pnp_card_entries(symval, sym->st_size, mod);
1583 for (i = 0; i < ARRAY_SIZE(devtable); i++) {
1584 const struct devtable *p = &devtable[i];
1586 if (sym_is(name, namelen, p->device_id)) {
1587 do_table(symval, sym->st_size, p->id_size,
1588 p->device_id, p->do_entry, mod);
1596 /* Now add out buffered information to the generated C source */
1597 void add_moddevtable(struct buffer *buf, struct module *mod)
1599 buf_printf(buf, "\n");
1600 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1601 free(mod->dev_table_buf.p);