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