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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 <stdarg.h>
14#include <stdio.h>
15
16#include "list.h"
17#include "xalloc.h"
18
19#include "modpost.h"
20#include "devicetable-offsets.h"
21
22/* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
23 * use either stdint.h or inttypes.h for the rest. */
24#if KERNEL_ELFCLASS == ELFCLASS32
25typedef Elf32_Addr kernel_ulong_t;
26#define BITS_PER_LONG 32
27#else
28typedef Elf64_Addr kernel_ulong_t;
29#define BITS_PER_LONG 64
30#endif
31#ifdef __sun__
32#include <inttypes.h>
33#else
34#include <stdint.h>
35#endif
36
37#include <ctype.h>
38#include <stdbool.h>
39
40/**
41 * module_alias_printf - add auto-generated MODULE_ALIAS()
42 *
43 * @mod: module
44 * @append_wildcard: append '*' for future extension if not exist yet
45 * @fmt: printf(3)-like format
46 */
47static void __attribute__((format (printf, 3, 4)))
48module_alias_printf(struct module *mod, bool append_wildcard,
49 const char *fmt, ...)
50{
51 struct module_alias *new, *als;
52 size_t len;
53 int n;
54 va_list ap;
55
56 /* Determine required size. */
57 va_start(ap, fmt);
58 n = vsnprintf(NULL, 0, fmt, ap);
59 va_end(ap);
60
61 if (n < 0) {
62 error("vsnprintf failed\n");
63 return;
64 }
65
66 len = n + 1; /* extra byte for '\0' */
67
68 if (append_wildcard)
69 len++; /* extra byte for '*' */
70
71 new = xmalloc(sizeof(*new) + len);
72
73 /* Now, really print it to the allocated buffer */
74 va_start(ap, fmt);
75 n = vsnprintf(new->str, len, fmt, ap);
76 va_end(ap);
77
78 if (n < 0) {
79 error("vsnprintf failed\n");
80 free(new);
81 return;
82 }
83
84 if (append_wildcard && (n == 0 || new->str[n - 1] != '*')) {
85 new->str[n] = '*';
86 new->str[n + 1] = '\0';
87 }
88
89 /* avoid duplication */
90 list_for_each_entry(als, &mod->aliases, node) {
91 if (!strcmp(als->str, new->str)) {
92 free(new);
93 return;
94 }
95 }
96
97 list_add_tail(&new->node, &mod->aliases);
98}
99
100typedef uint32_t __u32;
101typedef uint16_t __u16;
102typedef unsigned char __u8;
103
104/* UUID types for backward compatibility, don't use in new code */
105typedef struct {
106 __u8 b[16];
107} guid_t;
108
109typedef struct {
110 __u8 b[16];
111} uuid_t;
112
113#define UUID_STRING_LEN 36
114
115/* MEI UUID type, don't use anywhere else */
116typedef struct {
117 __u8 b[16];
118} uuid_le;
119
120/* Big exception to the "don't include kernel headers into userspace, which
121 * even potentially has different endianness and word sizes, since
122 * we handle those differences explicitly below */
123#include "../../include/linux/mod_devicetable.h"
124
125struct devtable {
126 const char *device_id;
127 unsigned long id_size;
128 void (*do_entry)(struct module *mod, void *symval);
129};
130
131/* Define a variable f that holds the value of field f of struct devid
132 * based at address m.
133 */
134#define DEF_FIELD(m, devid, f) \
135 typeof(((struct devid *)0)->f) f = \
136 get_unaligned_native((typeof(f) *)((m) + OFF_##devid##_##f))
137
138/* Define a variable f that holds the address of field f of struct devid
139 * based at address m. Due to the way typeof works, for a field of type
140 * T[N] the variable has type T(*)[N], _not_ T*.
141 */
142#define DEF_FIELD_ADDR(m, devid, f) \
143 typeof(((struct devid *)0)->f) *f = ((m) + OFF_##devid##_##f)
144
145#define ADD(str, sep, cond, field) \
146do { \
147 strcat(str, sep); \
148 if (cond) \
149 sprintf(str + strlen(str), \
150 sizeof(field) == 1 ? "%02X" : \
151 sizeof(field) == 2 ? "%04X" : \
152 sizeof(field) == 4 ? "%08X" : "", \
153 field); \
154 else \
155 sprintf(str + strlen(str), "*"); \
156} while(0)
157
158static inline void add_uuid(char *str, uuid_le uuid)
159{
160 int len = strlen(str);
161
162 sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
163 uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0],
164 uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6],
165 uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11],
166 uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]);
167}
168
169static inline void add_guid(char *str, guid_t guid)
170{
171 int len = strlen(str);
172
173 sprintf(str + len, "%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
174 guid.b[3], guid.b[2], guid.b[1], guid.b[0],
175 guid.b[5], guid.b[4], guid.b[7], guid.b[6],
176 guid.b[8], guid.b[9], guid.b[10], guid.b[11],
177 guid.b[12], guid.b[13], guid.b[14], guid.b[15]);
178}
179
180/* USB is special because the bcdDevice can be matched against a numeric range */
181/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
182static void do_usb_entry(void *symval,
183 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
184 unsigned char range_lo, unsigned char range_hi,
185 unsigned char max, struct module *mod)
186{
187 char alias[500];
188 DEF_FIELD(symval, usb_device_id, match_flags);
189 DEF_FIELD(symval, usb_device_id, idVendor);
190 DEF_FIELD(symval, usb_device_id, idProduct);
191 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
192 DEF_FIELD(symval, usb_device_id, bDeviceClass);
193 DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
194 DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
195 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
196 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
197 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
198 DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
199
200 strcpy(alias, "usb:");
201 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
202 idVendor);
203 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
204 idProduct);
205
206 strcat(alias, "d");
207 if (bcdDevice_initial_digits)
208 sprintf(alias + strlen(alias), "%0*X",
209 bcdDevice_initial_digits, bcdDevice_initial);
210 if (range_lo == range_hi)
211 sprintf(alias + strlen(alias), "%X", range_lo);
212 else if (range_lo > 0 || range_hi < max) {
213 if (range_lo > 0x9 || range_hi < 0xA)
214 sprintf(alias + strlen(alias),
215 "[%X-%X]",
216 range_lo,
217 range_hi);
218 else {
219 sprintf(alias + strlen(alias),
220 range_lo < 0x9 ? "[%X-9" : "[%X",
221 range_lo);
222 sprintf(alias + strlen(alias),
223 range_hi > 0xA ? "A-%X]" : "%X]",
224 range_hi);
225 }
226 }
227 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
228 strcat(alias, "*");
229
230 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
231 bDeviceClass);
232 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
233 bDeviceSubClass);
234 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
235 bDeviceProtocol);
236 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
237 bInterfaceClass);
238 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
239 bInterfaceSubClass);
240 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
241 bInterfaceProtocol);
242 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
243 bInterfaceNumber);
244
245 module_alias_printf(mod, true, "%s", alias);
246}
247
248/* Handles increment/decrement of BCD formatted integers */
249/* Returns the previous value, so it works like i++ or i-- */
250static unsigned int incbcd(unsigned int *bcd,
251 int inc,
252 unsigned char max,
253 size_t chars)
254{
255 unsigned int init = *bcd, i, j;
256 unsigned long long c, dec = 0;
257
258 /* If bcd is not in BCD format, just increment */
259 if (max > 0x9) {
260 *bcd += inc;
261 return init;
262 }
263
264 /* Convert BCD to Decimal */
265 for (i=0 ; i < chars ; i++) {
266 c = (*bcd >> (i << 2)) & 0xf;
267 c = c > 9 ? 9 : c; /* force to bcd just in case */
268 for (j=0 ; j < i ; j++)
269 c = c * 10;
270 dec += c;
271 }
272
273 /* Do our increment/decrement */
274 dec += inc;
275 *bcd = 0;
276
277 /* Convert back to BCD */
278 for (i=0 ; i < chars ; i++) {
279 for (c=1,j=0 ; j < i ; j++)
280 c = c * 10;
281 c = (dec / c) % 10;
282 *bcd += c << (i << 2);
283 }
284 return init;
285}
286
287static void do_usb_entry_multi(struct module *mod, void *symval)
288{
289 unsigned int devlo, devhi;
290 unsigned char chi, clo, max;
291 int ndigits;
292
293 DEF_FIELD(symval, usb_device_id, match_flags);
294 DEF_FIELD(symval, usb_device_id, idVendor);
295 DEF_FIELD(symval, usb_device_id, idProduct);
296 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
297 DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
298 DEF_FIELD(symval, usb_device_id, bDeviceClass);
299 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
300
301 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
302 bcdDevice_lo : 0x0U;
303 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
304 bcdDevice_hi : ~0x0U;
305
306 /* Figure out if this entry is in bcd or hex format */
307 max = 0x9; /* Default to decimal format */
308 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
309 clo = (devlo >> (ndigits << 2)) & 0xf;
310 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
311 if (clo > max || chi > max) {
312 max = 0xf;
313 break;
314 }
315 }
316
317 /*
318 * Some modules (visor) have empty slots as placeholder for
319 * run-time specification that results in catch-all alias
320 */
321 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
322 return;
323
324 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
325 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
326 clo = devlo & 0xf;
327 chi = devhi & 0xf;
328 if (chi > max) /* If we are in bcd mode, truncate if necessary */
329 chi = max;
330 devlo >>= 4;
331 devhi >>= 4;
332
333 if (devlo == devhi || !ndigits) {
334 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
335 break;
336 }
337
338 if (clo > 0x0)
339 do_usb_entry(symval,
340 incbcd(&devlo, 1, max,
341 sizeof(bcdDevice_lo) * 2),
342 ndigits, clo, max, max, mod);
343
344 if (chi < max)
345 do_usb_entry(symval,
346 incbcd(&devhi, -1, max,
347 sizeof(bcdDevice_lo) * 2),
348 ndigits, 0x0, chi, max, mod);
349 }
350}
351
352static void do_of_entry(struct module *mod, void *symval)
353{
354 char alias[500];
355 int len;
356 char *tmp;
357
358 DEF_FIELD_ADDR(symval, of_device_id, name);
359 DEF_FIELD_ADDR(symval, of_device_id, type);
360 DEF_FIELD_ADDR(symval, of_device_id, compatible);
361
362 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
363 (*type)[0] ? *type : "*");
364
365 if ((*compatible)[0])
366 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
367 *compatible);
368
369 /* Replace all whitespace with underscores */
370 for (tmp = alias; tmp && *tmp; tmp++)
371 if (isspace(*tmp))
372 *tmp = '_';
373
374 module_alias_printf(mod, false, "%s", alias);
375 module_alias_printf(mod, false, "%sC*", alias);
376}
377
378/* Looks like: hid:bNvNpN */
379static void do_hid_entry(struct module *mod, void *symval)
380{
381 char alias[256] = {};
382
383 DEF_FIELD(symval, hid_device_id, bus);
384 DEF_FIELD(symval, hid_device_id, group);
385 DEF_FIELD(symval, hid_device_id, vendor);
386 DEF_FIELD(symval, hid_device_id, product);
387
388 ADD(alias, "b", bus != HID_BUS_ANY, bus);
389 ADD(alias, "g", group != HID_GROUP_ANY, group);
390 ADD(alias, "v", vendor != HID_ANY_ID, vendor);
391 ADD(alias, "p", product != HID_ANY_ID, product);
392
393 module_alias_printf(mod, false, "hid:%s", alias);
394}
395
396/* Looks like: ieee1394:venNmoNspNverN */
397static void do_ieee1394_entry(struct module *mod, void *symval)
398{
399 char alias[256] = {};
400
401 DEF_FIELD(symval, ieee1394_device_id, match_flags);
402 DEF_FIELD(symval, ieee1394_device_id, vendor_id);
403 DEF_FIELD(symval, ieee1394_device_id, model_id);
404 DEF_FIELD(symval, ieee1394_device_id, specifier_id);
405 DEF_FIELD(symval, ieee1394_device_id, version);
406
407 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
408 vendor_id);
409 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
410 model_id);
411 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
412 specifier_id);
413 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
414 version);
415
416 module_alias_printf(mod, true, "ieee1394:%s", alias);
417}
418
419/* Looks like: pci:vNdNsvNsdNbcNscNiN or <prefix>_pci:vNdNsvNsdNbcNscNiN. */
420static void do_pci_entry(struct module *mod, void *symval)
421{
422 char alias[256];
423 /* Class field can be divided into these three. */
424 unsigned char baseclass, subclass, interface,
425 baseclass_mask, subclass_mask, interface_mask;
426
427 DEF_FIELD(symval, pci_device_id, vendor);
428 DEF_FIELD(symval, pci_device_id, device);
429 DEF_FIELD(symval, pci_device_id, subvendor);
430 DEF_FIELD(symval, pci_device_id, subdevice);
431 DEF_FIELD(symval, pci_device_id, class);
432 DEF_FIELD(symval, pci_device_id, class_mask);
433 DEF_FIELD(symval, pci_device_id, override_only);
434
435 switch (override_only) {
436 case 0:
437 strcpy(alias, "pci:");
438 break;
439 case PCI_ID_F_VFIO_DRIVER_OVERRIDE:
440 strcpy(alias, "vfio_pci:");
441 break;
442 default:
443 warn("Unknown PCI driver_override alias %08X\n",
444 override_only);
445 }
446
447 ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
448 ADD(alias, "d", device != PCI_ANY_ID, device);
449 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
450 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
451
452 baseclass = (class) >> 16;
453 baseclass_mask = (class_mask) >> 16;
454 subclass = (class) >> 8;
455 subclass_mask = (class_mask) >> 8;
456 interface = class;
457 interface_mask = class_mask;
458
459 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
460 || (subclass_mask != 0 && subclass_mask != 0xFF)
461 || (interface_mask != 0 && interface_mask != 0xFF)) {
462 warn("Can't handle masks in %s:%04X\n",
463 mod->name, class_mask);
464 return;
465 }
466
467 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
468 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
469 ADD(alias, "i", interface_mask == 0xFF, interface);
470
471 module_alias_printf(mod, true, "%s", alias);
472}
473
474/* looks like: "ccw:tNmNdtNdmN" */
475static void do_ccw_entry(struct module *mod, void *symval)
476{
477 char alias[256] = {};
478
479 DEF_FIELD(symval, ccw_device_id, match_flags);
480 DEF_FIELD(symval, ccw_device_id, cu_type);
481 DEF_FIELD(symval, ccw_device_id, cu_model);
482 DEF_FIELD(symval, ccw_device_id, dev_type);
483 DEF_FIELD(symval, ccw_device_id, dev_model);
484
485 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
486 cu_type);
487 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
488 cu_model);
489 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
490 dev_type);
491 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
492 dev_model);
493
494 module_alias_printf(mod, true, "ccw:%s", alias);
495}
496
497/* looks like: "ap:tN" */
498static void do_ap_entry(struct module *mod, void *symval)
499{
500 DEF_FIELD(symval, ap_device_id, dev_type);
501
502 module_alias_printf(mod, false, "ap:t%02X*", dev_type);
503}
504
505/* looks like: "css:tN" */
506static void do_css_entry(struct module *mod, void *symval)
507{
508 DEF_FIELD(symval, css_device_id, type);
509
510 module_alias_printf(mod, false, "css:t%01X", type);
511}
512
513/* Looks like: "serio:tyNprNidNexN" */
514static void do_serio_entry(struct module *mod, void *symval)
515{
516 char alias[256] = {};
517
518 DEF_FIELD(symval, serio_device_id, type);
519 DEF_FIELD(symval, serio_device_id, proto);
520 DEF_FIELD(symval, serio_device_id, id);
521 DEF_FIELD(symval, serio_device_id, extra);
522
523 ADD(alias, "ty", type != SERIO_ANY, type);
524 ADD(alias, "pr", proto != SERIO_ANY, proto);
525 ADD(alias, "id", id != SERIO_ANY, id);
526 ADD(alias, "ex", extra != SERIO_ANY, extra);
527
528 module_alias_printf(mod, true, "serio:%s", alias);
529}
530
531/* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or
532 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if)
533 *
534 * NOTE: Each driver should use one of the following : _HID, _CIDs
535 * or _CLS. Also, bb, ss, and pp can be substituted with ??
536 * as don't care byte.
537 */
538static void do_acpi_entry(struct module *mod, void *symval)
539{
540 DEF_FIELD_ADDR(symval, acpi_device_id, id);
541 DEF_FIELD(symval, acpi_device_id, cls);
542 DEF_FIELD(symval, acpi_device_id, cls_msk);
543
544 if ((*id)[0])
545 module_alias_printf(mod, false, "acpi*:%s:*", *id);
546 else {
547 char alias[256];
548 int i, byte_shift, cnt = 0;
549 unsigned int msk;
550
551 for (i = 1; i <= 3; i++) {
552 byte_shift = 8 * (3-i);
553 msk = (cls_msk >> byte_shift) & 0xFF;
554 if (msk)
555 sprintf(&alias[cnt], "%02x",
556 (cls >> byte_shift) & 0xFF);
557 else
558 sprintf(&alias[cnt], "??");
559 cnt += 2;
560 }
561 module_alias_printf(mod, false, "acpi*:%s:*", alias);
562 }
563}
564
565/* looks like: "pnp:dD" */
566static void do_pnp_device_entry(struct module *mod, void *symval)
567{
568 DEF_FIELD_ADDR(symval, pnp_device_id, id);
569 char acpi_id[sizeof(*id)];
570
571 /* fix broken pnp bus lowercasing */
572 for (unsigned int i = 0; i < sizeof(acpi_id); i++)
573 acpi_id[i] = toupper((*id)[i]);
574 module_alias_printf(mod, false, "pnp:d%s*", *id);
575 module_alias_printf(mod, false, "acpi*:%s:*", acpi_id);
576}
577
578/* looks like: "pnp:dD" for every device of the card */
579static void do_pnp_card_entry(struct module *mod, void *symval)
580{
581 DEF_FIELD_ADDR(symval, pnp_card_device_id, devs);
582
583 for (unsigned int i = 0; i < PNP_MAX_DEVICES; i++) {
584 const char *id = (char *)(*devs)[i].id;
585 char acpi_id[PNP_ID_LEN];
586
587 if (!id[0])
588 break;
589
590 /* fix broken pnp bus lowercasing */
591 for (unsigned int j = 0; j < sizeof(acpi_id); j++)
592 acpi_id[j] = toupper(id[j]);
593
594 /* add an individual alias for every device entry */
595 module_alias_printf(mod, false, "pnp:d%s*", id);
596 module_alias_printf(mod, false, "acpi*:%s:*", acpi_id);
597 }
598}
599
600/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
601static void do_pcmcia_entry(struct module *mod, void *symval)
602{
603 char alias[256] = {};
604
605 DEF_FIELD(symval, pcmcia_device_id, match_flags);
606 DEF_FIELD(symval, pcmcia_device_id, manf_id);
607 DEF_FIELD(symval, pcmcia_device_id, card_id);
608 DEF_FIELD(symval, pcmcia_device_id, func_id);
609 DEF_FIELD(symval, pcmcia_device_id, function);
610 DEF_FIELD(symval, pcmcia_device_id, device_no);
611 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
612
613 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
614 manf_id);
615 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
616 card_id);
617 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
618 func_id);
619 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
620 function);
621 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
622 device_no);
623 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1,
624 get_unaligned_native(*prod_id_hash + 0));
625 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2,
626 get_unaligned_native(*prod_id_hash + 1));
627 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3,
628 get_unaligned_native(*prod_id_hash + 2));
629 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4,
630 get_unaligned_native(*prod_id_hash + 3));
631
632 module_alias_printf(mod, true, "pcmcia:%s", alias);
633}
634
635static void do_vio_entry(struct module *mod, void *symval)
636{
637 char alias[256];
638 char *tmp;
639 DEF_FIELD_ADDR(symval, vio_device_id, type);
640 DEF_FIELD_ADDR(symval, vio_device_id, compat);
641
642 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
643 (*compat)[0] ? *compat : "*");
644
645 /* Replace all whitespace with underscores */
646 for (tmp = alias; tmp && *tmp; tmp++)
647 if (isspace (*tmp))
648 *tmp = '_';
649
650 module_alias_printf(mod, true, "%s", alias);
651}
652
653static void do_input(char *alias,
654 kernel_ulong_t *arr, unsigned int min, unsigned int max)
655{
656 unsigned int i;
657
658 for (i = min; i <= max; i++)
659 if (get_unaligned_native(arr + i / BITS_PER_LONG) &
660 (1ULL << (i % BITS_PER_LONG)))
661 sprintf(alias + strlen(alias), "%X,*", i);
662}
663
664/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
665static void do_input_entry(struct module *mod, void *symval)
666{
667 char alias[256] = {};
668
669 DEF_FIELD(symval, input_device_id, flags);
670 DEF_FIELD(symval, input_device_id, bustype);
671 DEF_FIELD(symval, input_device_id, vendor);
672 DEF_FIELD(symval, input_device_id, product);
673 DEF_FIELD(symval, input_device_id, version);
674 DEF_FIELD_ADDR(symval, input_device_id, evbit);
675 DEF_FIELD_ADDR(symval, input_device_id, keybit);
676 DEF_FIELD_ADDR(symval, input_device_id, relbit);
677 DEF_FIELD_ADDR(symval, input_device_id, absbit);
678 DEF_FIELD_ADDR(symval, input_device_id, mscbit);
679 DEF_FIELD_ADDR(symval, input_device_id, ledbit);
680 DEF_FIELD_ADDR(symval, input_device_id, sndbit);
681 DEF_FIELD_ADDR(symval, input_device_id, ffbit);
682 DEF_FIELD_ADDR(symval, input_device_id, swbit);
683
684 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
685 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
686 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
687 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
688
689 sprintf(alias + strlen(alias), "-e*");
690 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
691 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
692 sprintf(alias + strlen(alias), "k*");
693 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
694 do_input(alias, *keybit,
695 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
696 INPUT_DEVICE_ID_KEY_MAX);
697 sprintf(alias + strlen(alias), "r*");
698 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
699 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
700 sprintf(alias + strlen(alias), "a*");
701 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
702 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
703 sprintf(alias + strlen(alias), "m*");
704 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
705 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
706 sprintf(alias + strlen(alias), "l*");
707 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
708 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
709 sprintf(alias + strlen(alias), "s*");
710 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
711 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
712 sprintf(alias + strlen(alias), "f*");
713 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
714 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
715 sprintf(alias + strlen(alias), "w*");
716 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
717 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
718
719 module_alias_printf(mod, false, "input:%s", alias);
720}
721
722static void do_eisa_entry(struct module *mod, void *symval)
723{
724 DEF_FIELD_ADDR(symval, eisa_device_id, sig);
725 module_alias_printf(mod, false, EISA_DEVICE_MODALIAS_FMT "*", *sig);
726}
727
728/* Looks like: parisc:tNhvNrevNsvN */
729static void do_parisc_entry(struct module *mod, void *symval)
730{
731 char alias[256] = {};
732
733 DEF_FIELD(symval, parisc_device_id, hw_type);
734 DEF_FIELD(symval, parisc_device_id, hversion);
735 DEF_FIELD(symval, parisc_device_id, hversion_rev);
736 DEF_FIELD(symval, parisc_device_id, sversion);
737
738 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
739 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
740 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
741 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
742
743 module_alias_printf(mod, true, "parisc:%s", alias);
744}
745
746/* Looks like: sdio:cNvNdN. */
747static void do_sdio_entry(struct module *mod, void *symval)
748{
749 char alias[256] = {};
750
751 DEF_FIELD(symval, sdio_device_id, class);
752 DEF_FIELD(symval, sdio_device_id, vendor);
753 DEF_FIELD(symval, sdio_device_id, device);
754
755 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
756 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
757 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
758
759 module_alias_printf(mod, true, "sdio:%s", alias);
760}
761
762/* Looks like: ssb:vNidNrevN. */
763static void do_ssb_entry(struct module *mod, void *symval)
764{
765 char alias[256] = {};
766
767 DEF_FIELD(symval, ssb_device_id, vendor);
768 DEF_FIELD(symval, ssb_device_id, coreid);
769 DEF_FIELD(symval, ssb_device_id, revision);
770
771 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
772 ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
773 ADD(alias, "rev", revision != SSB_ANY_REV, revision);
774
775 module_alias_printf(mod, true, "ssb:%s", alias);
776}
777
778/* Looks like: bcma:mNidNrevNclN. */
779static void do_bcma_entry(struct module *mod, void *symval)
780{
781 char alias[256] = {};
782
783 DEF_FIELD(symval, bcma_device_id, manuf);
784 DEF_FIELD(symval, bcma_device_id, id);
785 DEF_FIELD(symval, bcma_device_id, rev);
786 DEF_FIELD(symval, bcma_device_id, class);
787
788 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
789 ADD(alias, "id", id != BCMA_ANY_ID, id);
790 ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
791 ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
792
793 module_alias_printf(mod, true, "bcma:%s", alias);
794}
795
796/* Looks like: virtio:dNvN */
797static void do_virtio_entry(struct module *mod, void *symval)
798{
799 char alias[256] = {};
800
801 DEF_FIELD(symval, virtio_device_id, device);
802 DEF_FIELD(symval, virtio_device_id, vendor);
803
804 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
805 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
806
807 module_alias_printf(mod, true, "virtio:%s", alias);
808}
809
810/*
811 * Looks like: vmbus:guid
812 * Each byte of the guid will be represented by two hex characters
813 * in the name.
814 */
815static void do_vmbus_entry(struct module *mod, void *symval)
816{
817 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
818 char guid_name[sizeof(*guid) * 2 + 1];
819
820 for (int i = 0; i < sizeof(*guid); i++)
821 sprintf(&guid_name[i * 2], "%02x", guid->b[i]);
822
823 module_alias_printf(mod, false, "vmbus:%s", guid_name);
824}
825
826/* Looks like: rpmsg:S */
827static void do_rpmsg_entry(struct module *mod, void *symval)
828{
829 DEF_FIELD_ADDR(symval, rpmsg_device_id, name);
830
831 module_alias_printf(mod, false, RPMSG_DEVICE_MODALIAS_FMT, *name);
832}
833
834/* Looks like: i2c:S */
835static void do_i2c_entry(struct module *mod, void *symval)
836{
837 DEF_FIELD_ADDR(symval, i2c_device_id, name);
838
839 module_alias_printf(mod, false, I2C_MODULE_PREFIX "%s", *name);
840}
841
842static void do_i3c_entry(struct module *mod, void *symval)
843{
844 char alias[256] = {};
845
846 DEF_FIELD(symval, i3c_device_id, match_flags);
847 DEF_FIELD(symval, i3c_device_id, dcr);
848 DEF_FIELD(symval, i3c_device_id, manuf_id);
849 DEF_FIELD(symval, i3c_device_id, part_id);
850 DEF_FIELD(symval, i3c_device_id, extra_info);
851
852 ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr);
853 ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id);
854 ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id);
855 ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info);
856
857 module_alias_printf(mod, false, "i3c:%s", alias);
858}
859
860static void do_slim_entry(struct module *mod, void *symval)
861{
862 DEF_FIELD(symval, slim_device_id, manf_id);
863 DEF_FIELD(symval, slim_device_id, prod_code);
864
865 module_alias_printf(mod, false, "slim:%x:%x:*", manf_id, prod_code);
866}
867
868/* Looks like: spi:S */
869static void do_spi_entry(struct module *mod, void *symval)
870{
871 DEF_FIELD_ADDR(symval, spi_device_id, name);
872
873 module_alias_printf(mod, false, SPI_MODULE_PREFIX "%s", *name);
874}
875
876static const struct dmifield {
877 const char *prefix;
878 int field;
879} dmi_fields[] = {
880 { "bvn", DMI_BIOS_VENDOR },
881 { "bvr", DMI_BIOS_VERSION },
882 { "bd", DMI_BIOS_DATE },
883 { "br", DMI_BIOS_RELEASE },
884 { "efr", DMI_EC_FIRMWARE_RELEASE },
885 { "svn", DMI_SYS_VENDOR },
886 { "pn", DMI_PRODUCT_NAME },
887 { "pvr", DMI_PRODUCT_VERSION },
888 { "rvn", DMI_BOARD_VENDOR },
889 { "rn", DMI_BOARD_NAME },
890 { "rvr", DMI_BOARD_VERSION },
891 { "cvn", DMI_CHASSIS_VENDOR },
892 { "ct", DMI_CHASSIS_TYPE },
893 { "cvr", DMI_CHASSIS_VERSION },
894 { NULL, DMI_NONE }
895};
896
897static void dmi_ascii_filter(char *d, const char *s)
898{
899 /* Filter out characters we don't want to see in the modalias string */
900 for (; *s; s++)
901 if (*s > ' ' && *s < 127 && *s != ':')
902 *(d++) = *s;
903
904 *d = 0;
905}
906
907
908static void do_dmi_entry(struct module *mod, void *symval)
909{
910 char alias[256] = {};
911 int i, j;
912 DEF_FIELD_ADDR(symval, dmi_system_id, matches);
913
914 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
915 for (j = 0; j < 4; j++) {
916 if ((*matches)[j].slot &&
917 (*matches)[j].slot == dmi_fields[i].field) {
918 sprintf(alias + strlen(alias), ":%s*",
919 dmi_fields[i].prefix);
920 dmi_ascii_filter(alias + strlen(alias),
921 (*matches)[j].substr);
922 strcat(alias, "*");
923 }
924 }
925 }
926
927 module_alias_printf(mod, false, "dmi*%s:", alias);
928}
929
930static void do_platform_entry(struct module *mod, void *symval)
931{
932 DEF_FIELD_ADDR(symval, platform_device_id, name);
933
934 module_alias_printf(mod, false, PLATFORM_MODULE_PREFIX "%s", *name);
935}
936
937static void do_mdio_entry(struct module *mod, void *symval)
938{
939 char id[33];
940 int i;
941 DEF_FIELD(symval, mdio_device_id, phy_id);
942 DEF_FIELD(symval, mdio_device_id, phy_id_mask);
943
944 for (i = 0; i < 32; i++) {
945 if (!((phy_id_mask >> (31-i)) & 1))
946 id[i] = '?';
947 else if ((phy_id >> (31-i)) & 1)
948 id[i] = '1';
949 else
950 id[i] = '0';
951 }
952
953 /* Terminate the string */
954 id[32] = '\0';
955
956 module_alias_printf(mod, false, MDIO_MODULE_PREFIX "%s", id);
957}
958
959/* Looks like: zorro:iN. */
960static void do_zorro_entry(struct module *mod, void *symval)
961{
962 char alias[256] = {};
963 DEF_FIELD(symval, zorro_device_id, id);
964
965 ADD(alias, "i", id != ZORRO_WILDCARD, id);
966
967 module_alias_printf(mod, false, "zorro:%s", alias);
968}
969
970/* looks like: "pnp:dD" */
971static void do_isapnp_entry(struct module *mod, void *symval)
972{
973 DEF_FIELD(symval, isapnp_device_id, vendor);
974 DEF_FIELD(symval, isapnp_device_id, function);
975 module_alias_printf(mod, false, "pnp:d%c%c%c%x%x%x%x*",
976 'A' + ((vendor >> 2) & 0x3f) - 1,
977 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
978 'A' + ((vendor >> 8) & 0x1f) - 1,
979 (function >> 4) & 0x0f, function & 0x0f,
980 (function >> 12) & 0x0f, (function >> 8) & 0x0f);
981}
982
983/* Looks like: "ipack:fNvNdN". */
984static void do_ipack_entry(struct module *mod, void *symval)
985{
986 char alias[256] = {};
987 DEF_FIELD(symval, ipack_device_id, format);
988 DEF_FIELD(symval, ipack_device_id, vendor);
989 DEF_FIELD(symval, ipack_device_id, device);
990
991 ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
992 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
993 ADD(alias, "d", device != IPACK_ANY_ID, device);
994
995 module_alias_printf(mod, true, "ipack:%s", alias);
996}
997
998/*
999 * Append a match expression for a single masked hex digit.
1000 * outp points to a pointer to the character at which to append.
1001 * *outp is updated on return to point just after the appended text,
1002 * to facilitate further appending.
1003 */
1004static void append_nibble_mask(char **outp,
1005 unsigned int nibble, unsigned int mask)
1006{
1007 char *p = *outp;
1008 unsigned int i;
1009
1010 switch (mask) {
1011 case 0:
1012 *p++ = '?';
1013 break;
1014
1015 case 0xf:
1016 p += sprintf(p, "%X", nibble);
1017 break;
1018
1019 default:
1020 /*
1021 * Dumbly emit a match pattern for all possible matching
1022 * digits. This could be improved in some cases using ranges,
1023 * but it has the advantage of being trivially correct, and is
1024 * often optimal.
1025 */
1026 *p++ = '[';
1027 for (i = 0; i < 0x10; i++)
1028 if ((i & mask) == nibble)
1029 p += sprintf(p, "%X", i);
1030 *p++ = ']';
1031 }
1032
1033 /* Ensure that the string remains NUL-terminated: */
1034 *p = '\0';
1035
1036 /* Advance the caller's end-of-string pointer: */
1037 *outp = p;
1038}
1039
1040/*
1041 * looks like: "amba:dN"
1042 *
1043 * N is exactly 8 digits, where each is an upper-case hex digit, or
1044 * a ? or [] pattern matching exactly one digit.
1045 */
1046static void do_amba_entry(struct module *mod, void *symval)
1047{
1048 char alias[256];
1049 unsigned int digit;
1050 char *p = alias;
1051 DEF_FIELD(symval, amba_id, id);
1052 DEF_FIELD(symval, amba_id, mask);
1053
1054 if ((id & mask) != id)
1055 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1056 mod->name, id, mask);
1057
1058 for (digit = 0; digit < 8; digit++)
1059 append_nibble_mask(&p,
1060 (id >> (4 * (7 - digit))) & 0xf,
1061 (mask >> (4 * (7 - digit))) & 0xf);
1062
1063 module_alias_printf(mod, false, "amba:d%s", alias);
1064}
1065
1066/*
1067 * looks like: "mipscdmm:tN"
1068 *
1069 * N is exactly 2 digits, where each is an upper-case hex digit, or
1070 * a ? or [] pattern matching exactly one digit.
1071 */
1072static void do_mips_cdmm_entry(struct module *mod, void *symval)
1073{
1074 DEF_FIELD(symval, mips_cdmm_device_id, type);
1075
1076 module_alias_printf(mod, false, "mipscdmm:t%02X*", type);
1077}
1078
1079/* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
1080 * All fields are numbers. It would be nicer to use strings for vendor
1081 * and feature, but getting those out of the build system here is too
1082 * complicated.
1083 */
1084
1085static void do_x86cpu_entry(struct module *mod, void *symval)
1086{
1087 char alias[256] = {};
1088
1089 DEF_FIELD(symval, x86_cpu_id, feature);
1090 DEF_FIELD(symval, x86_cpu_id, family);
1091 DEF_FIELD(symval, x86_cpu_id, model);
1092 DEF_FIELD(symval, x86_cpu_id, vendor);
1093
1094 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
1095 ADD(alias, "fam", family != X86_FAMILY_ANY, family);
1096 ADD(alias, "mod", model != X86_MODEL_ANY, model);
1097 strcat(alias, ":feature:*");
1098 if (feature != X86_FEATURE_ANY)
1099 sprintf(alias + strlen(alias), "%04X*", feature);
1100
1101 module_alias_printf(mod, false, "cpu:type:x86,%s", alias);
1102}
1103
1104/* LOOKS like cpu:type:*:feature:*FEAT* */
1105static void do_cpu_entry(struct module *mod, void *symval)
1106{
1107 DEF_FIELD(symval, cpu_feature, feature);
1108
1109 module_alias_printf(mod, false, "cpu:type:*:feature:*%04X*", feature);
1110}
1111
1112/* Looks like: mei:S:uuid:N:* */
1113static void do_mei_entry(struct module *mod, void *symval)
1114{
1115 char alias[256] = {};
1116
1117 DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
1118 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid);
1119 DEF_FIELD(symval, mei_cl_device_id, version);
1120
1121 add_uuid(alias, *uuid);
1122 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version);
1123
1124 module_alias_printf(mod, false, MEI_CL_MODULE_PREFIX "%s:%s:*",
1125 (*name)[0] ? *name : "*", alias);
1126}
1127
1128/* Looks like: rapidio:vNdNavNadN */
1129static void do_rio_entry(struct module *mod, void *symval)
1130{
1131 char alias[256] = {};
1132
1133 DEF_FIELD(symval, rio_device_id, did);
1134 DEF_FIELD(symval, rio_device_id, vid);
1135 DEF_FIELD(symval, rio_device_id, asm_did);
1136 DEF_FIELD(symval, rio_device_id, asm_vid);
1137
1138 ADD(alias, "v", vid != RIO_ANY_ID, vid);
1139 ADD(alias, "d", did != RIO_ANY_ID, did);
1140 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
1141 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
1142
1143 module_alias_printf(mod, true, "rapidio:%s", alias);
1144}
1145
1146/* Looks like: ulpi:vNpN */
1147static void do_ulpi_entry(struct module *mod, void *symval)
1148{
1149 DEF_FIELD(symval, ulpi_device_id, vendor);
1150 DEF_FIELD(symval, ulpi_device_id, product);
1151
1152 module_alias_printf(mod, false, "ulpi:v%04xp%04x", vendor, product);
1153}
1154
1155/* Looks like: hdaudio:vNrNaN */
1156static void do_hda_entry(struct module *mod, void *symval)
1157{
1158 char alias[256] = {};
1159
1160 DEF_FIELD(symval, hda_device_id, vendor_id);
1161 DEF_FIELD(symval, hda_device_id, rev_id);
1162 DEF_FIELD(symval, hda_device_id, api_version);
1163
1164 ADD(alias, "v", vendor_id != 0, vendor_id);
1165 ADD(alias, "r", rev_id != 0, rev_id);
1166 ADD(alias, "a", api_version != 0, api_version);
1167
1168 module_alias_printf(mod, true, "hdaudio:%s", alias);
1169}
1170
1171/* Looks like: sdw:mNpNvNcN */
1172static void do_sdw_entry(struct module *mod, void *symval)
1173{
1174 char alias[256] = {};
1175
1176 DEF_FIELD(symval, sdw_device_id, mfg_id);
1177 DEF_FIELD(symval, sdw_device_id, part_id);
1178 DEF_FIELD(symval, sdw_device_id, sdw_version);
1179 DEF_FIELD(symval, sdw_device_id, class_id);
1180
1181 ADD(alias, "m", mfg_id != 0, mfg_id);
1182 ADD(alias, "p", part_id != 0, part_id);
1183 ADD(alias, "v", sdw_version != 0, sdw_version);
1184 ADD(alias, "c", class_id != 0, class_id);
1185
1186 module_alias_printf(mod, true, "sdw:%s", alias);
1187}
1188
1189/* Looks like: fsl-mc:vNdN */
1190static void do_fsl_mc_entry(struct module *mod, void *symval)
1191{
1192 DEF_FIELD(symval, fsl_mc_device_id, vendor);
1193 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type);
1194
1195 module_alias_printf(mod, false, "fsl-mc:v%08Xd%s", vendor, *obj_type);
1196}
1197
1198/* Looks like: tbsvc:kSpNvNrN */
1199static void do_tbsvc_entry(struct module *mod, void *symval)
1200{
1201 char alias[256] = {};
1202
1203 DEF_FIELD(symval, tb_service_id, match_flags);
1204 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key);
1205 DEF_FIELD(symval, tb_service_id, protocol_id);
1206 DEF_FIELD(symval, tb_service_id, protocol_version);
1207 DEF_FIELD(symval, tb_service_id, protocol_revision);
1208
1209 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY)
1210 sprintf(alias + strlen(alias), "k%s", *protocol_key);
1211 else
1212 strcat(alias + strlen(alias), "k*");
1213 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id);
1214 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION,
1215 protocol_version);
1216 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION,
1217 protocol_revision);
1218
1219 module_alias_printf(mod, true, "tbsvc:%s", alias);
1220}
1221
1222/* Looks like: typec:idNmN */
1223static void do_typec_entry(struct module *mod, void *symval)
1224{
1225 char alias[256] = {};
1226
1227 DEF_FIELD(symval, typec_device_id, svid);
1228 DEF_FIELD(symval, typec_device_id, mode);
1229
1230 ADD(alias, "m", mode != TYPEC_ANY_MODE, mode);
1231
1232 module_alias_printf(mod, false, "typec:id%04X%s", svid, alias);
1233}
1234
1235/* Looks like: tee:uuid */
1236static void do_tee_entry(struct module *mod, void *symval)
1237{
1238 DEF_FIELD_ADDR(symval, tee_client_device_id, uuid);
1239
1240 module_alias_printf(mod, true,
1241 "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
1242 uuid->b[0], uuid->b[1], uuid->b[2], uuid->b[3], uuid->b[4],
1243 uuid->b[5], uuid->b[6], uuid->b[7], uuid->b[8], uuid->b[9],
1244 uuid->b[10], uuid->b[11], uuid->b[12], uuid->b[13], uuid->b[14],
1245 uuid->b[15]);
1246}
1247
1248/* Looks like: wmi:guid */
1249static void do_wmi_entry(struct module *mod, void *symval)
1250{
1251 DEF_FIELD_ADDR(symval, wmi_device_id, guid_string);
1252
1253 if (strlen(*guid_string) != UUID_STRING_LEN) {
1254 warn("Invalid WMI device id 'wmi:%s' in '%s'\n",
1255 *guid_string, mod->name);
1256 return;
1257 }
1258
1259 module_alias_printf(mod, false, WMI_MODULE_PREFIX "%s", *guid_string);
1260}
1261
1262/* Looks like: mhi:S */
1263static void do_mhi_entry(struct module *mod, void *symval)
1264{
1265 DEF_FIELD_ADDR(symval, mhi_device_id, chan);
1266 module_alias_printf(mod, false, MHI_DEVICE_MODALIAS_FMT, *chan);
1267}
1268
1269/* Looks like: mhi_ep:S */
1270static void do_mhi_ep_entry(struct module *mod, void *symval)
1271{
1272 DEF_FIELD_ADDR(symval, mhi_device_id, chan);
1273
1274 module_alias_printf(mod, false, MHI_EP_DEVICE_MODALIAS_FMT, *chan);
1275}
1276
1277/* Looks like: ishtp:{guid} */
1278static void do_ishtp_entry(struct module *mod, void *symval)
1279{
1280 char alias[256] = {};
1281 DEF_FIELD_ADDR(symval, ishtp_device_id, guid);
1282
1283 add_guid(alias, *guid);
1284
1285 module_alias_printf(mod, false, ISHTP_MODULE_PREFIX "{%s}", alias);
1286}
1287
1288static void do_auxiliary_entry(struct module *mod, void *symval)
1289{
1290 DEF_FIELD_ADDR(symval, auxiliary_device_id, name);
1291
1292 module_alias_printf(mod, false, AUXILIARY_MODULE_PREFIX "%s", *name);
1293}
1294
1295/*
1296 * Looks like: ssam:dNcNtNiNfN
1297 *
1298 * N is exactly 2 digits, where each is an upper-case hex digit.
1299 */
1300static void do_ssam_entry(struct module *mod, void *symval)
1301{
1302 char alias[256] = {};
1303
1304 DEF_FIELD(symval, ssam_device_id, match_flags);
1305 DEF_FIELD(symval, ssam_device_id, domain);
1306 DEF_FIELD(symval, ssam_device_id, category);
1307 DEF_FIELD(symval, ssam_device_id, target);
1308 DEF_FIELD(symval, ssam_device_id, instance);
1309 DEF_FIELD(symval, ssam_device_id, function);
1310
1311 ADD(alias, "t", match_flags & SSAM_MATCH_TARGET, target);
1312 ADD(alias, "i", match_flags & SSAM_MATCH_INSTANCE, instance);
1313 ADD(alias, "f", match_flags & SSAM_MATCH_FUNCTION, function);
1314
1315 module_alias_printf(mod, false, "ssam:d%02Xc%02X%s",
1316 domain, category, alias);
1317}
1318
1319/* Looks like: dfl:tNfN */
1320static void do_dfl_entry(struct module *mod, void *symval)
1321{
1322 DEF_FIELD(symval, dfl_device_id, type);
1323 DEF_FIELD(symval, dfl_device_id, feature_id);
1324
1325 module_alias_printf(mod, true, "dfl:t%04Xf%04X", type, feature_id);
1326}
1327
1328/* Looks like: cdx:vNdN */
1329static void do_cdx_entry(struct module *mod, void *symval)
1330{
1331 char alias[256];
1332
1333 DEF_FIELD(symval, cdx_device_id, vendor);
1334 DEF_FIELD(symval, cdx_device_id, device);
1335 DEF_FIELD(symval, cdx_device_id, subvendor);
1336 DEF_FIELD(symval, cdx_device_id, subdevice);
1337 DEF_FIELD(symval, cdx_device_id, class);
1338 DEF_FIELD(symval, cdx_device_id, class_mask);
1339 DEF_FIELD(symval, cdx_device_id, override_only);
1340
1341 switch (override_only) {
1342 case 0:
1343 strcpy(alias, "cdx:");
1344 break;
1345 case CDX_ID_F_VFIO_DRIVER_OVERRIDE:
1346 strcpy(alias, "vfio_cdx:");
1347 break;
1348 default:
1349 warn("Unknown CDX driver_override alias %08X\n",
1350 override_only);
1351 return;
1352 }
1353
1354 ADD(alias, "v", vendor != CDX_ANY_ID, vendor);
1355 ADD(alias, "d", device != CDX_ANY_ID, device);
1356 ADD(alias, "sv", subvendor != CDX_ANY_ID, subvendor);
1357 ADD(alias, "sd", subdevice != CDX_ANY_ID, subdevice);
1358 ADD(alias, "c", class_mask == 0xFFFFFF, class);
1359
1360 module_alias_printf(mod, false, "%s", alias);
1361}
1362
1363static void do_vchiq_entry(struct module *mod, void *symval)
1364{
1365 DEF_FIELD_ADDR(symval, vchiq_device_id, name);
1366
1367 module_alias_printf(mod, false, "vchiq:%s", *name);
1368}
1369
1370/* Looks like: coreboot:tN */
1371static void do_coreboot_entry(struct module *mod, void *symval)
1372{
1373 DEF_FIELD(symval, coreboot_device_id, tag);
1374
1375 module_alias_printf(mod, false, "coreboot:t%08X", tag);
1376}
1377
1378/* Does namelen bytes of name exactly match the symbol? */
1379static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1380{
1381 if (namelen != strlen(symbol))
1382 return false;
1383
1384 return memcmp(name, symbol, namelen) == 0;
1385}
1386
1387static void do_table(const char *name, void *symval, unsigned long size,
1388 unsigned long id_size,
1389 const char *device_id,
1390 void (*do_entry)(struct module *mod, void *symval),
1391 struct module *mod)
1392{
1393 unsigned int i;
1394
1395 if (size % id_size || size < id_size) {
1396 error("%s: type mismatch between %s[] and MODULE_DEVICE_TABLE(%s, ...)\n",
1397 mod->name, name, device_id);
1398 return;
1399 }
1400
1401 /* Verify the last entry is a terminator */
1402 for (i = size - id_size; i < size; i++) {
1403 if (*(uint8_t *)(symval + i)) {
1404 error("%s: %s[] is not terminated with a NULL entry\n",
1405 mod->name, name);
1406 return;
1407 }
1408 }
1409
1410 /* Leave last one: it's the terminator. */
1411 size -= id_size;
1412
1413 for (i = 0; i < size; i += id_size)
1414 do_entry(mod, symval + i);
1415}
1416
1417static const struct devtable devtable[] = {
1418 {"hid", SIZE_hid_device_id, do_hid_entry},
1419 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry},
1420 {"pci", SIZE_pci_device_id, do_pci_entry},
1421 {"ccw", SIZE_ccw_device_id, do_ccw_entry},
1422 {"ap", SIZE_ap_device_id, do_ap_entry},
1423 {"css", SIZE_css_device_id, do_css_entry},
1424 {"serio", SIZE_serio_device_id, do_serio_entry},
1425 {"acpi", SIZE_acpi_device_id, do_acpi_entry},
1426 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry},
1427 {"vio", SIZE_vio_device_id, do_vio_entry},
1428 {"input", SIZE_input_device_id, do_input_entry},
1429 {"eisa", SIZE_eisa_device_id, do_eisa_entry},
1430 {"parisc", SIZE_parisc_device_id, do_parisc_entry},
1431 {"sdio", SIZE_sdio_device_id, do_sdio_entry},
1432 {"ssb", SIZE_ssb_device_id, do_ssb_entry},
1433 {"bcma", SIZE_bcma_device_id, do_bcma_entry},
1434 {"virtio", SIZE_virtio_device_id, do_virtio_entry},
1435 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry},
1436 {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry},
1437 {"i2c", SIZE_i2c_device_id, do_i2c_entry},
1438 {"i3c", SIZE_i3c_device_id, do_i3c_entry},
1439 {"slim", SIZE_slim_device_id, do_slim_entry},
1440 {"spi", SIZE_spi_device_id, do_spi_entry},
1441 {"dmi", SIZE_dmi_system_id, do_dmi_entry},
1442 {"platform", SIZE_platform_device_id, do_platform_entry},
1443 {"mdio", SIZE_mdio_device_id, do_mdio_entry},
1444 {"zorro", SIZE_zorro_device_id, do_zorro_entry},
1445 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry},
1446 {"ipack", SIZE_ipack_device_id, do_ipack_entry},
1447 {"amba", SIZE_amba_id, do_amba_entry},
1448 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry},
1449 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry},
1450 {"cpu", SIZE_cpu_feature, do_cpu_entry},
1451 {"mei", SIZE_mei_cl_device_id, do_mei_entry},
1452 {"rapidio", SIZE_rio_device_id, do_rio_entry},
1453 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry},
1454 {"hdaudio", SIZE_hda_device_id, do_hda_entry},
1455 {"sdw", SIZE_sdw_device_id, do_sdw_entry},
1456 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry},
1457 {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry},
1458 {"typec", SIZE_typec_device_id, do_typec_entry},
1459 {"tee", SIZE_tee_client_device_id, do_tee_entry},
1460 {"wmi", SIZE_wmi_device_id, do_wmi_entry},
1461 {"mhi", SIZE_mhi_device_id, do_mhi_entry},
1462 {"mhi_ep", SIZE_mhi_device_id, do_mhi_ep_entry},
1463 {"auxiliary", SIZE_auxiliary_device_id, do_auxiliary_entry},
1464 {"ssam", SIZE_ssam_device_id, do_ssam_entry},
1465 {"dfl", SIZE_dfl_device_id, do_dfl_entry},
1466 {"ishtp", SIZE_ishtp_device_id, do_ishtp_entry},
1467 {"cdx", SIZE_cdx_device_id, do_cdx_entry},
1468 {"vchiq", SIZE_vchiq_device_id, do_vchiq_entry},
1469 {"coreboot", SIZE_coreboot_device_id, do_coreboot_entry},
1470 {"of", SIZE_of_device_id, do_of_entry},
1471 {"usb", SIZE_usb_device_id, do_usb_entry_multi},
1472 {"pnp", SIZE_pnp_device_id, do_pnp_device_entry},
1473 {"pnp_card", SIZE_pnp_card_device_id, do_pnp_card_entry},
1474};
1475
1476/* Create MODULE_ALIAS() statements.
1477 * At this time, we cannot write the actual output C source yet,
1478 * so we write into the mod->dev_table_buf buffer. */
1479void handle_moddevtable(struct module *mod, struct elf_info *info,
1480 Elf_Sym *sym, const char *symname)
1481{
1482 void *symval;
1483 char *zeros = NULL;
1484 const char *type, *name;
1485 size_t typelen;
1486 static const char *prefix = "__mod_device_table__";
1487
1488 /* We're looking for a section relative symbol */
1489 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1490 return;
1491
1492 /* We're looking for an object */
1493 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1494 return;
1495
1496 /* All our symbols are of form __mod_device_table__<type>__<name>. */
1497 if (!strstarts(symname, prefix))
1498 return;
1499 type = symname + strlen(prefix);
1500
1501 name = strstr(type, "__");
1502 if (!name)
1503 return;
1504 typelen = name - type;
1505 name += strlen("__");
1506
1507 /* Handle all-NULL symbols allocated into .bss */
1508 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1509 zeros = calloc(1, sym->st_size);
1510 symval = zeros;
1511 } else {
1512 symval = sym_get_data(info, sym);
1513 }
1514
1515 for (int i = 0; i < ARRAY_SIZE(devtable); i++) {
1516 const struct devtable *p = &devtable[i];
1517
1518 if (sym_is(type, typelen, p->device_id)) {
1519 do_table(name, symval, sym->st_size, p->id_size,
1520 p->device_id, p->do_entry, mod);
1521 break;
1522 }
1523 }
1524
1525 free(zeros);
1526}
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
15/* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
16 * use either stdint.h or inttypes.h for the rest. */
17#if KERNEL_ELFCLASS == ELFCLASS32
18typedef Elf32_Addr kernel_ulong_t;
19#define BITS_PER_LONG 32
20#else
21typedef Elf64_Addr kernel_ulong_t;
22#define BITS_PER_LONG 64
23#endif
24#ifdef __sun__
25#include <inttypes.h>
26#else
27#include <stdint.h>
28#endif
29
30#include <ctype.h>
31#include <stdbool.h>
32
33typedef uint32_t __u32;
34typedef uint16_t __u16;
35typedef unsigned char __u8;
36
37/* Big exception to the "don't include kernel headers into userspace, which
38 * even potentially has different endianness and word sizes, since
39 * we handle those differences explicitly below */
40#include "../../include/linux/mod_devicetable.h"
41
42/* This array collects all instances that use the generic do_table */
43struct devtable {
44 const char *device_id; /* name of table, __mod_<name>_device_table. */
45 unsigned long id_size;
46 void *function;
47};
48
49#define ___cat(a,b) a ## b
50#define __cat(a,b) ___cat(a,b)
51
52/* we need some special handling for this host tool running eventually on
53 * Darwin. The Mach-O section handling is a bit different than ELF section
54 * handling. The differnces in detail are:
55 * a) we have segments which have sections
56 * b) we need a API call to get the respective section symbols */
57#if defined(__MACH__)
58#include <mach-o/getsect.h>
59
60#define INIT_SECTION(name) do { \
61 unsigned long name ## _len; \
62 char *__cat(pstart_,name) = getsectdata("__TEXT", \
63 #name, &__cat(name,_len)); \
64 char *__cat(pstop_,name) = __cat(pstart_,name) + \
65 __cat(name, _len); \
66 __cat(__start_,name) = (void *)__cat(pstart_,name); \
67 __cat(__stop_,name) = (void *)__cat(pstop_,name); \
68 } while (0)
69#define SECTION(name) __attribute__((section("__TEXT, " #name)))
70
71struct devtable **__start___devtable, **__stop___devtable;
72#else
73#define INIT_SECTION(name) /* no-op for ELF */
74#define SECTION(name) __attribute__((section(#name)))
75
76/* We construct a table of pointers in an ELF section (pointers generally
77 * go unpadded by gcc). ld creates boundary syms for us. */
78extern struct devtable *__start___devtable[], *__stop___devtable[];
79#endif /* __MACH__ */
80
81#if __GNUC__ == 3 && __GNUC_MINOR__ < 3
82# define __used __attribute__((__unused__))
83#else
84# define __used __attribute__((__used__))
85#endif
86
87/* Add a table entry. We test function type matches while we're here. */
88#define ADD_TO_DEVTABLE(device_id, type, function) \
89 static struct devtable __cat(devtable,__LINE__) = { \
90 device_id + 0*sizeof((function)((const char *)NULL, \
91 (type *)NULL, \
92 (char *)NULL)), \
93 sizeof(type), (function) }; \
94 static struct devtable *SECTION(__devtable) __used \
95 __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__)
96
97#define ADD(str, sep, cond, field) \
98do { \
99 strcat(str, sep); \
100 if (cond) \
101 sprintf(str + strlen(str), \
102 sizeof(field) == 1 ? "%02X" : \
103 sizeof(field) == 2 ? "%04X" : \
104 sizeof(field) == 4 ? "%08X" : "", \
105 field); \
106 else \
107 sprintf(str + strlen(str), "*"); \
108} while(0)
109
110/* Always end in a wildcard, for future extension */
111static inline void add_wildcard(char *str)
112{
113 int len = strlen(str);
114
115 if (str[len - 1] != '*')
116 strcat(str + len, "*");
117}
118
119unsigned int cross_build = 0;
120/**
121 * Check that sizeof(device_id type) are consistent with size of section
122 * in .o file. If in-consistent then userspace and kernel does not agree
123 * on actual size which is a bug.
124 * Also verify that the final entry in the table is all zeros.
125 * Ignore both checks if build host differ from target host and size differs.
126 **/
127static void device_id_check(const char *modname, const char *device_id,
128 unsigned long size, unsigned long id_size,
129 void *symval)
130{
131 int i;
132
133 if (size % id_size || size < id_size) {
134 if (cross_build != 0)
135 return;
136 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
137 "of the size of section __mod_%s_device_table=%lu.\n"
138 "Fix definition of struct %s_device_id "
139 "in mod_devicetable.h\n",
140 modname, device_id, id_size, device_id, size, device_id);
141 }
142 /* Verify last one is a terminator */
143 for (i = 0; i < id_size; i++ ) {
144 if (*(uint8_t*)(symval+size-id_size+i)) {
145 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
146 "The last of %lu is:\n",
147 modname, device_id, id_size, size / id_size);
148 for (i = 0; i < id_size; i++ )
149 fprintf(stderr,"0x%02x ",
150 *(uint8_t*)(symval+size-id_size+i) );
151 fprintf(stderr,"\n");
152 fatal("%s: struct %s_device_id is not terminated "
153 "with a NULL entry!\n", modname, device_id);
154 }
155 }
156}
157
158/* USB is special because the bcdDevice can be matched against a numeric range */
159/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */
160static void do_usb_entry(struct usb_device_id *id,
161 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
162 unsigned char range_lo, unsigned char range_hi,
163 unsigned char max, struct module *mod)
164{
165 char alias[500];
166 strcpy(alias, "usb:");
167 ADD(alias, "v", id->match_flags&USB_DEVICE_ID_MATCH_VENDOR,
168 id->idVendor);
169 ADD(alias, "p", id->match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
170 id->idProduct);
171
172 strcat(alias, "d");
173 if (bcdDevice_initial_digits)
174 sprintf(alias + strlen(alias), "%0*X",
175 bcdDevice_initial_digits, bcdDevice_initial);
176 if (range_lo == range_hi)
177 sprintf(alias + strlen(alias), "%X", range_lo);
178 else if (range_lo > 0 || range_hi < max) {
179 if (range_lo > 0x9 || range_hi < 0xA)
180 sprintf(alias + strlen(alias),
181 "[%X-%X]",
182 range_lo,
183 range_hi);
184 else {
185 sprintf(alias + strlen(alias),
186 range_lo < 0x9 ? "[%X-9" : "[%X",
187 range_lo);
188 sprintf(alias + strlen(alias),
189 range_hi > 0xA ? "a-%X]" : "%X]",
190 range_lo);
191 }
192 }
193 if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1))
194 strcat(alias, "*");
195
196 ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
197 id->bDeviceClass);
198 ADD(alias, "dsc",
199 id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
200 id->bDeviceSubClass);
201 ADD(alias, "dp",
202 id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
203 id->bDeviceProtocol);
204 ADD(alias, "ic",
205 id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
206 id->bInterfaceClass);
207 ADD(alias, "isc",
208 id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
209 id->bInterfaceSubClass);
210 ADD(alias, "ip",
211 id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
212 id->bInterfaceProtocol);
213
214 add_wildcard(alias);
215 buf_printf(&mod->dev_table_buf,
216 "MODULE_ALIAS(\"%s\");\n", alias);
217}
218
219/* Handles increment/decrement of BCD formatted integers */
220/* Returns the previous value, so it works like i++ or i-- */
221static unsigned int incbcd(unsigned int *bcd,
222 int inc,
223 unsigned char max,
224 size_t chars)
225{
226 unsigned int init = *bcd, i, j;
227 unsigned long long c, dec = 0;
228
229 /* If bcd is not in BCD format, just increment */
230 if (max > 0x9) {
231 *bcd += inc;
232 return init;
233 }
234
235 /* Convert BCD to Decimal */
236 for (i=0 ; i < chars ; i++) {
237 c = (*bcd >> (i << 2)) & 0xf;
238 c = c > 9 ? 9 : c; /* force to bcd just in case */
239 for (j=0 ; j < i ; j++)
240 c = c * 10;
241 dec += c;
242 }
243
244 /* Do our increment/decrement */
245 dec += inc;
246 *bcd = 0;
247
248 /* Convert back to BCD */
249 for (i=0 ; i < chars ; i++) {
250 for (c=1,j=0 ; j < i ; j++)
251 c = c * 10;
252 c = (dec / c) % 10;
253 *bcd += c << (i << 2);
254 }
255 return init;
256}
257
258static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod)
259{
260 unsigned int devlo, devhi;
261 unsigned char chi, clo, max;
262 int ndigits;
263
264 id->match_flags = TO_NATIVE(id->match_flags);
265 id->idVendor = TO_NATIVE(id->idVendor);
266 id->idProduct = TO_NATIVE(id->idProduct);
267
268 devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
269 TO_NATIVE(id->bcdDevice_lo) : 0x0U;
270 devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
271 TO_NATIVE(id->bcdDevice_hi) : ~0x0U;
272
273 /* Figure out if this entry is in bcd or hex format */
274 max = 0x9; /* Default to decimal format */
275 for (ndigits = 0 ; ndigits < sizeof(id->bcdDevice_lo) * 2 ; ndigits++) {
276 clo = (devlo >> (ndigits << 2)) & 0xf;
277 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
278 if (clo > max || chi > max) {
279 max = 0xf;
280 break;
281 }
282 }
283
284 /*
285 * Some modules (visor) have empty slots as placeholder for
286 * run-time specification that results in catch-all alias
287 */
288 if (!(id->idVendor | id->idProduct | id->bDeviceClass | id->bInterfaceClass))
289 return;
290
291 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
292 for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
293 clo = devlo & 0xf;
294 chi = devhi & 0xf;
295 if (chi > max) /* If we are in bcd mode, truncate if necessary */
296 chi = max;
297 devlo >>= 4;
298 devhi >>= 4;
299
300 if (devlo == devhi || !ndigits) {
301 do_usb_entry(id, devlo, ndigits, clo, chi, max, mod);
302 break;
303 }
304
305 if (clo > 0x0)
306 do_usb_entry(id,
307 incbcd(&devlo, 1, max,
308 sizeof(id->bcdDevice_lo) * 2),
309 ndigits, clo, max, max, mod);
310
311 if (chi < max)
312 do_usb_entry(id,
313 incbcd(&devhi, -1, max,
314 sizeof(id->bcdDevice_lo) * 2),
315 ndigits, 0x0, chi, max, mod);
316 }
317}
318
319static void do_usb_table(void *symval, unsigned long size,
320 struct module *mod)
321{
322 unsigned int i;
323 const unsigned long id_size = sizeof(struct usb_device_id);
324
325 device_id_check(mod->name, "usb", size, id_size, symval);
326
327 /* Leave last one: it's the terminator. */
328 size -= id_size;
329
330 for (i = 0; i < size; i += id_size)
331 do_usb_entry_multi(symval + i, mod);
332}
333
334/* Looks like: hid:bNvNpN */
335static int do_hid_entry(const char *filename,
336 struct hid_device_id *id, char *alias)
337{
338 id->bus = TO_NATIVE(id->bus);
339 id->group = TO_NATIVE(id->group);
340 id->vendor = TO_NATIVE(id->vendor);
341 id->product = TO_NATIVE(id->product);
342
343 sprintf(alias, "hid:");
344 ADD(alias, "b", id->bus != HID_BUS_ANY, id->bus);
345 ADD(alias, "g", id->group != HID_GROUP_ANY, id->group);
346 ADD(alias, "v", id->vendor != HID_ANY_ID, id->vendor);
347 ADD(alias, "p", id->product != HID_ANY_ID, id->product);
348
349 return 1;
350}
351ADD_TO_DEVTABLE("hid", struct hid_device_id, do_hid_entry);
352
353/* Looks like: ieee1394:venNmoNspNverN */
354static int do_ieee1394_entry(const char *filename,
355 struct ieee1394_device_id *id, char *alias)
356{
357 id->match_flags = TO_NATIVE(id->match_flags);
358 id->vendor_id = TO_NATIVE(id->vendor_id);
359 id->model_id = TO_NATIVE(id->model_id);
360 id->specifier_id = TO_NATIVE(id->specifier_id);
361 id->version = TO_NATIVE(id->version);
362
363 strcpy(alias, "ieee1394:");
364 ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID,
365 id->vendor_id);
366 ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID,
367 id->model_id);
368 ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID,
369 id->specifier_id);
370 ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION,
371 id->version);
372
373 add_wildcard(alias);
374 return 1;
375}
376ADD_TO_DEVTABLE("ieee1394", struct ieee1394_device_id, do_ieee1394_entry);
377
378/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
379static int do_pci_entry(const char *filename,
380 struct pci_device_id *id, char *alias)
381{
382 /* Class field can be divided into these three. */
383 unsigned char baseclass, subclass, interface,
384 baseclass_mask, subclass_mask, interface_mask;
385
386 id->vendor = TO_NATIVE(id->vendor);
387 id->device = TO_NATIVE(id->device);
388 id->subvendor = TO_NATIVE(id->subvendor);
389 id->subdevice = TO_NATIVE(id->subdevice);
390 id->class = TO_NATIVE(id->class);
391 id->class_mask = TO_NATIVE(id->class_mask);
392
393 strcpy(alias, "pci:");
394 ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor);
395 ADD(alias, "d", id->device != PCI_ANY_ID, id->device);
396 ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor);
397 ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice);
398
399 baseclass = (id->class) >> 16;
400 baseclass_mask = (id->class_mask) >> 16;
401 subclass = (id->class) >> 8;
402 subclass_mask = (id->class_mask) >> 8;
403 interface = id->class;
404 interface_mask = id->class_mask;
405
406 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
407 || (subclass_mask != 0 && subclass_mask != 0xFF)
408 || (interface_mask != 0 && interface_mask != 0xFF)) {
409 warn("Can't handle masks in %s:%04X\n",
410 filename, id->class_mask);
411 return 0;
412 }
413
414 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
415 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
416 ADD(alias, "i", interface_mask == 0xFF, interface);
417 add_wildcard(alias);
418 return 1;
419}
420ADD_TO_DEVTABLE("pci", struct pci_device_id, do_pci_entry);
421
422/* looks like: "ccw:tNmNdtNdmN" */
423static int do_ccw_entry(const char *filename,
424 struct ccw_device_id *id, char *alias)
425{
426 id->match_flags = TO_NATIVE(id->match_flags);
427 id->cu_type = TO_NATIVE(id->cu_type);
428 id->cu_model = TO_NATIVE(id->cu_model);
429 id->dev_type = TO_NATIVE(id->dev_type);
430 id->dev_model = TO_NATIVE(id->dev_model);
431
432 strcpy(alias, "ccw:");
433 ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
434 id->cu_type);
435 ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
436 id->cu_model);
437 ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
438 id->dev_type);
439 ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
440 id->dev_model);
441 add_wildcard(alias);
442 return 1;
443}
444ADD_TO_DEVTABLE("ccw", struct ccw_device_id, do_ccw_entry);
445
446/* looks like: "ap:tN" */
447static int do_ap_entry(const char *filename,
448 struct ap_device_id *id, char *alias)
449{
450 sprintf(alias, "ap:t%02X*", id->dev_type);
451 return 1;
452}
453ADD_TO_DEVTABLE("ap", struct ap_device_id, do_ap_entry);
454
455/* looks like: "css:tN" */
456static int do_css_entry(const char *filename,
457 struct css_device_id *id, char *alias)
458{
459 sprintf(alias, "css:t%01X", id->type);
460 return 1;
461}
462ADD_TO_DEVTABLE("css", struct css_device_id, do_css_entry);
463
464/* Looks like: "serio:tyNprNidNexN" */
465static int do_serio_entry(const char *filename,
466 struct serio_device_id *id, char *alias)
467{
468 id->type = TO_NATIVE(id->type);
469 id->proto = TO_NATIVE(id->proto);
470 id->id = TO_NATIVE(id->id);
471 id->extra = TO_NATIVE(id->extra);
472
473 strcpy(alias, "serio:");
474 ADD(alias, "ty", id->type != SERIO_ANY, id->type);
475 ADD(alias, "pr", id->proto != SERIO_ANY, id->proto);
476 ADD(alias, "id", id->id != SERIO_ANY, id->id);
477 ADD(alias, "ex", id->extra != SERIO_ANY, id->extra);
478
479 add_wildcard(alias);
480 return 1;
481}
482ADD_TO_DEVTABLE("serio", struct serio_device_id, do_serio_entry);
483
484/* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
485static int do_acpi_entry(const char *filename,
486 struct acpi_device_id *id, char *alias)
487{
488 sprintf(alias, "acpi*:%s:*", id->id);
489 return 1;
490}
491ADD_TO_DEVTABLE("acpi", struct acpi_device_id, do_acpi_entry);
492
493/* looks like: "pnp:dD" */
494static void do_pnp_device_entry(void *symval, unsigned long size,
495 struct module *mod)
496{
497 const unsigned long id_size = sizeof(struct pnp_device_id);
498 const unsigned int count = (size / id_size)-1;
499 const struct pnp_device_id *devs = symval;
500 unsigned int i;
501
502 device_id_check(mod->name, "pnp", size, id_size, symval);
503
504 for (i = 0; i < count; i++) {
505 const char *id = (char *)devs[i].id;
506 char acpi_id[sizeof(devs[0].id)];
507 int j;
508
509 buf_printf(&mod->dev_table_buf,
510 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
511
512 /* fix broken pnp bus lowercasing */
513 for (j = 0; j < sizeof(acpi_id); j++)
514 acpi_id[j] = toupper(id[j]);
515 buf_printf(&mod->dev_table_buf,
516 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
517 }
518}
519
520/* looks like: "pnp:dD" for every device of the card */
521static void do_pnp_card_entries(void *symval, unsigned long size,
522 struct module *mod)
523{
524 const unsigned long id_size = sizeof(struct pnp_card_device_id);
525 const unsigned int count = (size / id_size)-1;
526 const struct pnp_card_device_id *cards = symval;
527 unsigned int i;
528
529 device_id_check(mod->name, "pnp", size, id_size, symval);
530
531 for (i = 0; i < count; i++) {
532 unsigned int j;
533 const struct pnp_card_device_id *card = &cards[i];
534
535 for (j = 0; j < PNP_MAX_DEVICES; j++) {
536 const char *id = (char *)card->devs[j].id;
537 int i2, j2;
538 int dup = 0;
539
540 if (!id[0])
541 break;
542
543 /* find duplicate, already added value */
544 for (i2 = 0; i2 < i && !dup; i2++) {
545 const struct pnp_card_device_id *card2 = &cards[i2];
546
547 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
548 const char *id2 = (char *)card2->devs[j2].id;
549
550 if (!id2[0])
551 break;
552
553 if (!strcmp(id, id2)) {
554 dup = 1;
555 break;
556 }
557 }
558 }
559
560 /* add an individual alias for every device entry */
561 if (!dup) {
562 char acpi_id[sizeof(card->devs[0].id)];
563 int k;
564
565 buf_printf(&mod->dev_table_buf,
566 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
567
568 /* fix broken pnp bus lowercasing */
569 for (k = 0; k < sizeof(acpi_id); k++)
570 acpi_id[k] = toupper(id[k]);
571 buf_printf(&mod->dev_table_buf,
572 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
573 }
574 }
575 }
576}
577
578/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
579static int do_pcmcia_entry(const char *filename,
580 struct pcmcia_device_id *id, char *alias)
581{
582 unsigned int i;
583
584 id->match_flags = TO_NATIVE(id->match_flags);
585 id->manf_id = TO_NATIVE(id->manf_id);
586 id->card_id = TO_NATIVE(id->card_id);
587 id->func_id = TO_NATIVE(id->func_id);
588 id->function = TO_NATIVE(id->function);
589 id->device_no = TO_NATIVE(id->device_no);
590
591 for (i=0; i<4; i++) {
592 id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]);
593 }
594
595 strcpy(alias, "pcmcia:");
596 ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
597 id->manf_id);
598 ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
599 id->card_id);
600 ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
601 id->func_id);
602 ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
603 id->function);
604 ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
605 id->device_no);
606 ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]);
607 ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]);
608 ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]);
609 ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]);
610
611 add_wildcard(alias);
612 return 1;
613}
614ADD_TO_DEVTABLE("pcmcia", struct pcmcia_device_id, do_pcmcia_entry);
615
616static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
617{
618 int len;
619 char *tmp;
620 len = sprintf (alias, "of:N%sT%s",
621 of->name[0] ? of->name : "*",
622 of->type[0] ? of->type : "*");
623
624 if (of->compatible[0])
625 sprintf (&alias[len], "%sC%s",
626 of->type[0] ? "*" : "",
627 of->compatible);
628
629 /* Replace all whitespace with underscores */
630 for (tmp = alias; tmp && *tmp; tmp++)
631 if (isspace (*tmp))
632 *tmp = '_';
633
634 add_wildcard(alias);
635 return 1;
636}
637ADD_TO_DEVTABLE("of", struct of_device_id, do_of_entry);
638
639static int do_vio_entry(const char *filename, struct vio_device_id *vio,
640 char *alias)
641{
642 char *tmp;
643
644 sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*",
645 vio->compat[0] ? vio->compat : "*");
646
647 /* Replace all whitespace with underscores */
648 for (tmp = alias; tmp && *tmp; tmp++)
649 if (isspace (*tmp))
650 *tmp = '_';
651
652 add_wildcard(alias);
653 return 1;
654}
655ADD_TO_DEVTABLE("vio", struct vio_device_id, do_vio_entry);
656
657#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
658
659static void do_input(char *alias,
660 kernel_ulong_t *arr, unsigned int min, unsigned int max)
661{
662 unsigned int i;
663
664 for (i = min; i < max; i++)
665 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
666 sprintf(alias + strlen(alias), "%X,*", i);
667}
668
669/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
670static int do_input_entry(const char *filename, struct input_device_id *id,
671 char *alias)
672{
673 sprintf(alias, "input:");
674
675 ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype);
676 ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor);
677 ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product);
678 ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version);
679
680 sprintf(alias + strlen(alias), "-e*");
681 if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT)
682 do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX);
683 sprintf(alias + strlen(alias), "k*");
684 if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
685 do_input(alias, id->keybit,
686 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
687 INPUT_DEVICE_ID_KEY_MAX);
688 sprintf(alias + strlen(alias), "r*");
689 if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT)
690 do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX);
691 sprintf(alias + strlen(alias), "a*");
692 if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
693 do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
694 sprintf(alias + strlen(alias), "m*");
695 if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT)
696 do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
697 sprintf(alias + strlen(alias), "l*");
698 if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
699 do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
700 sprintf(alias + strlen(alias), "s*");
701 if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
702 do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
703 sprintf(alias + strlen(alias), "f*");
704 if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT)
705 do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
706 sprintf(alias + strlen(alias), "w*");
707 if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT)
708 do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX);
709 return 1;
710}
711ADD_TO_DEVTABLE("input", struct input_device_id, do_input_entry);
712
713static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
714 char *alias)
715{
716 if (eisa->sig[0])
717 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig);
718 else
719 strcat(alias, "*");
720 return 1;
721}
722ADD_TO_DEVTABLE("eisa", struct eisa_device_id, do_eisa_entry);
723
724/* Looks like: parisc:tNhvNrevNsvN */
725static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
726 char *alias)
727{
728 id->hw_type = TO_NATIVE(id->hw_type);
729 id->hversion = TO_NATIVE(id->hversion);
730 id->hversion_rev = TO_NATIVE(id->hversion_rev);
731 id->sversion = TO_NATIVE(id->sversion);
732
733 strcpy(alias, "parisc:");
734 ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type);
735 ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion);
736 ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev);
737 ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion);
738
739 add_wildcard(alias);
740 return 1;
741}
742ADD_TO_DEVTABLE("parisc", struct parisc_device_id, do_parisc_entry);
743
744/* Looks like: sdio:cNvNdN. */
745static int do_sdio_entry(const char *filename,
746 struct sdio_device_id *id, char *alias)
747{
748 id->class = TO_NATIVE(id->class);
749 id->vendor = TO_NATIVE(id->vendor);
750 id->device = TO_NATIVE(id->device);
751
752 strcpy(alias, "sdio:");
753 ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class);
754 ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor);
755 ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device);
756 add_wildcard(alias);
757 return 1;
758}
759ADD_TO_DEVTABLE("sdio", struct sdio_device_id, do_sdio_entry);
760
761/* Looks like: ssb:vNidNrevN. */
762static int do_ssb_entry(const char *filename,
763 struct ssb_device_id *id, char *alias)
764{
765 id->vendor = TO_NATIVE(id->vendor);
766 id->coreid = TO_NATIVE(id->coreid);
767 id->revision = TO_NATIVE(id->revision);
768
769 strcpy(alias, "ssb:");
770 ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor);
771 ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid);
772 ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision);
773 add_wildcard(alias);
774 return 1;
775}
776ADD_TO_DEVTABLE("ssb", struct ssb_device_id, do_ssb_entry);
777
778/* Looks like: bcma:mNidNrevNclN. */
779static int do_bcma_entry(const char *filename,
780 struct bcma_device_id *id, char *alias)
781{
782 id->manuf = TO_NATIVE(id->manuf);
783 id->id = TO_NATIVE(id->id);
784 id->rev = TO_NATIVE(id->rev);
785 id->class = TO_NATIVE(id->class);
786
787 strcpy(alias, "bcma:");
788 ADD(alias, "m", id->manuf != BCMA_ANY_MANUF, id->manuf);
789 ADD(alias, "id", id->id != BCMA_ANY_ID, id->id);
790 ADD(alias, "rev", id->rev != BCMA_ANY_REV, id->rev);
791 ADD(alias, "cl", id->class != BCMA_ANY_CLASS, id->class);
792 add_wildcard(alias);
793 return 1;
794}
795ADD_TO_DEVTABLE("bcma", struct bcma_device_id, do_bcma_entry);
796
797/* Looks like: virtio:dNvN */
798static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
799 char *alias)
800{
801 id->device = TO_NATIVE(id->device);
802 id->vendor = TO_NATIVE(id->vendor);
803
804 strcpy(alias, "virtio:");
805 ADD(alias, "d", id->device != VIRTIO_DEV_ANY_ID, id->device);
806 ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor);
807
808 add_wildcard(alias);
809 return 1;
810}
811ADD_TO_DEVTABLE("virtio", struct virtio_device_id, do_virtio_entry);
812
813/*
814 * Looks like: vmbus:guid
815 * Each byte of the guid will be represented by two hex characters
816 * in the name.
817 */
818
819static int do_vmbus_entry(const char *filename, struct hv_vmbus_device_id *id,
820 char *alias)
821{
822 int i;
823 char guid_name[((sizeof(id->guid) + 1)) * 2];
824
825 for (i = 0; i < (sizeof(id->guid) * 2); i += 2)
826 sprintf(&guid_name[i], "%02x", id->guid[i/2]);
827
828 strcpy(alias, "vmbus:");
829 strcat(alias, guid_name);
830
831 return 1;
832}
833ADD_TO_DEVTABLE("vmbus", struct hv_vmbus_device_id, do_vmbus_entry);
834
835/* Looks like: i2c:S */
836static int do_i2c_entry(const char *filename, struct i2c_device_id *id,
837 char *alias)
838{
839 sprintf(alias, I2C_MODULE_PREFIX "%s", id->name);
840
841 return 1;
842}
843ADD_TO_DEVTABLE("i2c", struct i2c_device_id, do_i2c_entry);
844
845/* Looks like: spi:S */
846static int do_spi_entry(const char *filename, struct spi_device_id *id,
847 char *alias)
848{
849 sprintf(alias, SPI_MODULE_PREFIX "%s", id->name);
850
851 return 1;
852}
853ADD_TO_DEVTABLE("spi", struct spi_device_id, do_spi_entry);
854
855static const struct dmifield {
856 const char *prefix;
857 int field;
858} dmi_fields[] = {
859 { "bvn", DMI_BIOS_VENDOR },
860 { "bvr", DMI_BIOS_VERSION },
861 { "bd", DMI_BIOS_DATE },
862 { "svn", DMI_SYS_VENDOR },
863 { "pn", DMI_PRODUCT_NAME },
864 { "pvr", DMI_PRODUCT_VERSION },
865 { "rvn", DMI_BOARD_VENDOR },
866 { "rn", DMI_BOARD_NAME },
867 { "rvr", DMI_BOARD_VERSION },
868 { "cvn", DMI_CHASSIS_VENDOR },
869 { "ct", DMI_CHASSIS_TYPE },
870 { "cvr", DMI_CHASSIS_VERSION },
871 { NULL, DMI_NONE }
872};
873
874static void dmi_ascii_filter(char *d, const char *s)
875{
876 /* Filter out characters we don't want to see in the modalias string */
877 for (; *s; s++)
878 if (*s > ' ' && *s < 127 && *s != ':')
879 *(d++) = *s;
880
881 *d = 0;
882}
883
884
885static int do_dmi_entry(const char *filename, struct dmi_system_id *id,
886 char *alias)
887{
888 int i, j;
889
890 sprintf(alias, "dmi*");
891
892 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
893 for (j = 0; j < 4; j++) {
894 if (id->matches[j].slot &&
895 id->matches[j].slot == dmi_fields[i].field) {
896 sprintf(alias + strlen(alias), ":%s*",
897 dmi_fields[i].prefix);
898 dmi_ascii_filter(alias + strlen(alias),
899 id->matches[j].substr);
900 strcat(alias, "*");
901 }
902 }
903 }
904
905 strcat(alias, ":");
906 return 1;
907}
908ADD_TO_DEVTABLE("dmi", struct dmi_system_id, do_dmi_entry);
909
910static int do_platform_entry(const char *filename,
911 struct platform_device_id *id, char *alias)
912{
913 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", id->name);
914 return 1;
915}
916ADD_TO_DEVTABLE("platform", struct platform_device_id, do_platform_entry);
917
918static int do_mdio_entry(const char *filename,
919 struct mdio_device_id *id, char *alias)
920{
921 int i;
922
923 alias += sprintf(alias, MDIO_MODULE_PREFIX);
924
925 for (i = 0; i < 32; i++) {
926 if (!((id->phy_id_mask >> (31-i)) & 1))
927 *(alias++) = '?';
928 else if ((id->phy_id >> (31-i)) & 1)
929 *(alias++) = '1';
930 else
931 *(alias++) = '0';
932 }
933
934 /* Terminate the string */
935 *alias = 0;
936
937 return 1;
938}
939ADD_TO_DEVTABLE("mdio", struct mdio_device_id, do_mdio_entry);
940
941/* Looks like: zorro:iN. */
942static int do_zorro_entry(const char *filename, struct zorro_device_id *id,
943 char *alias)
944{
945 id->id = TO_NATIVE(id->id);
946 strcpy(alias, "zorro:");
947 ADD(alias, "i", id->id != ZORRO_WILDCARD, id->id);
948 return 1;
949}
950ADD_TO_DEVTABLE("zorro", struct zorro_device_id, do_zorro_entry);
951
952/* looks like: "pnp:dD" */
953static int do_isapnp_entry(const char *filename,
954 struct isapnp_device_id *id, char *alias)
955{
956 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
957 'A' + ((id->vendor >> 2) & 0x3f) - 1,
958 'A' + (((id->vendor & 3) << 3) | ((id->vendor >> 13) & 7)) - 1,
959 'A' + ((id->vendor >> 8) & 0x1f) - 1,
960 (id->function >> 4) & 0x0f, id->function & 0x0f,
961 (id->function >> 12) & 0x0f, (id->function >> 8) & 0x0f);
962 return 1;
963}
964ADD_TO_DEVTABLE("isapnp", struct isapnp_device_id, do_isapnp_entry);
965
966/*
967 * Append a match expression for a single masked hex digit.
968 * outp points to a pointer to the character at which to append.
969 * *outp is updated on return to point just after the appended text,
970 * to facilitate further appending.
971 */
972static void append_nibble_mask(char **outp,
973 unsigned int nibble, unsigned int mask)
974{
975 char *p = *outp;
976 unsigned int i;
977
978 switch (mask) {
979 case 0:
980 *p++ = '?';
981 break;
982
983 case 0xf:
984 p += sprintf(p, "%X", nibble);
985 break;
986
987 default:
988 /*
989 * Dumbly emit a match pattern for all possible matching
990 * digits. This could be improved in some cases using ranges,
991 * but it has the advantage of being trivially correct, and is
992 * often optimal.
993 */
994 *p++ = '[';
995 for (i = 0; i < 0x10; i++)
996 if ((i & mask) == nibble)
997 p += sprintf(p, "%X", i);
998 *p++ = ']';
999 }
1000
1001 /* Ensure that the string remains NUL-terminated: */
1002 *p = '\0';
1003
1004 /* Advance the caller's end-of-string pointer: */
1005 *outp = p;
1006}
1007
1008/*
1009 * looks like: "amba:dN"
1010 *
1011 * N is exactly 8 digits, where each is an upper-case hex digit, or
1012 * a ? or [] pattern matching exactly one digit.
1013 */
1014static int do_amba_entry(const char *filename,
1015 struct amba_id *id, char *alias)
1016{
1017 unsigned int digit;
1018 char *p = alias;
1019
1020 if ((id->id & id->mask) != id->id)
1021 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1022 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1023 filename, id->id, id->mask);
1024
1025 p += sprintf(alias, "amba:d");
1026 for (digit = 0; digit < 8; digit++)
1027 append_nibble_mask(&p,
1028 (id->id >> (4 * (7 - digit))) & 0xf,
1029 (id->mask >> (4 * (7 - digit))) & 0xf);
1030
1031 return 1;
1032}
1033ADD_TO_DEVTABLE("amba", struct amba_id, do_amba_entry);
1034
1035/* LOOKS like x86cpu:vendor:VVVV:family:FFFF:model:MMMM:feature:*,FEAT,*
1036 * All fields are numbers. It would be nicer to use strings for vendor
1037 * and feature, but getting those out of the build system here is too
1038 * complicated.
1039 */
1040
1041static int do_x86cpu_entry(const char *filename, struct x86_cpu_id *id,
1042 char *alias)
1043{
1044 id->feature = TO_NATIVE(id->feature);
1045 id->family = TO_NATIVE(id->family);
1046 id->model = TO_NATIVE(id->model);
1047 id->vendor = TO_NATIVE(id->vendor);
1048
1049 strcpy(alias, "x86cpu:");
1050 ADD(alias, "vendor:", id->vendor != X86_VENDOR_ANY, id->vendor);
1051 ADD(alias, ":family:", id->family != X86_FAMILY_ANY, id->family);
1052 ADD(alias, ":model:", id->model != X86_MODEL_ANY, id->model);
1053 strcat(alias, ":feature:*");
1054 if (id->feature != X86_FEATURE_ANY)
1055 sprintf(alias + strlen(alias), "%04X*", id->feature);
1056 return 1;
1057}
1058ADD_TO_DEVTABLE("x86cpu", struct x86_cpu_id, do_x86cpu_entry);
1059
1060/* Does namelen bytes of name exactly match the symbol? */
1061static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1062{
1063 if (namelen != strlen(symbol))
1064 return false;
1065
1066 return memcmp(name, symbol, namelen) == 0;
1067}
1068
1069static void do_table(void *symval, unsigned long size,
1070 unsigned long id_size,
1071 const char *device_id,
1072 void *function,
1073 struct module *mod)
1074{
1075 unsigned int i;
1076 char alias[500];
1077 int (*do_entry)(const char *, void *entry, char *alias) = function;
1078
1079 device_id_check(mod->name, device_id, size, id_size, symval);
1080 /* Leave last one: it's the terminator. */
1081 size -= id_size;
1082
1083 for (i = 0; i < size; i += id_size) {
1084 if (do_entry(mod->name, symval+i, alias)) {
1085 buf_printf(&mod->dev_table_buf,
1086 "MODULE_ALIAS(\"%s\");\n", alias);
1087 }
1088 }
1089}
1090
1091/* Create MODULE_ALIAS() statements.
1092 * At this time, we cannot write the actual output C source yet,
1093 * so we write into the mod->dev_table_buf buffer. */
1094void handle_moddevtable(struct module *mod, struct elf_info *info,
1095 Elf_Sym *sym, const char *symname)
1096{
1097 void *symval;
1098 char *zeros = NULL;
1099 const char *name;
1100 unsigned int namelen;
1101
1102 /* We're looking for a section relative symbol */
1103 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1104 return;
1105
1106 /* We're looking for an object */
1107 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1108 return;
1109
1110 /* All our symbols are of form <prefix>__mod_XXX_device_table. */
1111 name = strstr(symname, "__mod_");
1112 if (!name)
1113 return;
1114 name += strlen("__mod_");
1115 namelen = strlen(name);
1116 if (namelen < strlen("_device_table"))
1117 return;
1118 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1119 return;
1120 namelen -= strlen("_device_table");
1121
1122 /* Handle all-NULL symbols allocated into .bss */
1123 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1124 zeros = calloc(1, sym->st_size);
1125 symval = zeros;
1126 } else {
1127 symval = (void *)info->hdr
1128 + info->sechdrs[get_secindex(info, sym)].sh_offset
1129 + sym->st_value;
1130 }
1131
1132 /* First handle the "special" cases */
1133 if (sym_is(name, namelen, "usb"))
1134 do_usb_table(symval, sym->st_size, mod);
1135 else if (sym_is(name, namelen, "pnp"))
1136 do_pnp_device_entry(symval, sym->st_size, mod);
1137 else if (sym_is(name, namelen, "pnp_card"))
1138 do_pnp_card_entries(symval, sym->st_size, mod);
1139 else {
1140 struct devtable **p;
1141 INIT_SECTION(__devtable);
1142
1143 for (p = __start___devtable; p < __stop___devtable; p++) {
1144 if (sym_is(name, namelen, (*p)->device_id)) {
1145 do_table(symval, sym->st_size, (*p)->id_size,
1146 (*p)->device_id, (*p)->function, mod);
1147 break;
1148 }
1149 }
1150 }
1151 free(zeros);
1152}
1153
1154/* Now add out buffered information to the generated C source */
1155void add_moddevtable(struct buffer *buf, struct module *mod)
1156{
1157 buf_printf(buf, "\n");
1158 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1159 free(mod->dev_table_buf.p);
1160}