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