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