projects/linux·blob v2.6.26 · refs

746 lines · 22.8 KiB

1/* Simple code to turn various tables in an ELF file into alias definitions.
2 * This deals with kernel datastructures where they should be
3 * dealt with: in the kernel source.
4 *
5 * Copyright 2002-2003 Rusty Russell, IBM Corporation
6 * 2003 Kai Germaschewski
7 *
8 *
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
11 */
12
13#include "modpost.h"
14
15/* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
16 * use either stdint.h or inttypes.h for the rest. */
17#if KERNEL_ELFCLASS == ELFCLASS32
18typedef Elf32_Addr kernel_ulong_t;
19#define BITS_PER_LONG 32
20#else
21typedef Elf64_Addr kernel_ulong_t;
22#define BITS_PER_LONG 64
23#endif
24#ifdef __sun__
25#include <inttypes.h>
26#else
27#include <stdint.h>
28#endif
29
30#include <ctype.h>
31
32typedef uint32_t __u32;
33typedef uint16_t __u16;
34typedef unsigned char __u8;
35
36/* Big exception to the "don't include kernel headers into userspace, which
37 * even potentially has different endianness and word sizes, since
38 * we handle those differences explicitly below */
39#include "../../include/linux/mod_devicetable.h"
40
41#define ADD(str, sep, cond, field) \
42do { \
43 strcat(str, sep); \
44 if (cond) \
45 sprintf(str + strlen(str), \
46 sizeof(field) == 1 ? "%02X" : \
47 sizeof(field) == 2 ? "%04X" : \
48 sizeof(field) == 4 ? "%08X" : "", \
49 field); \
50 else \
51 sprintf(str + strlen(str), "*"); \
52} while(0)
53
54/* Always end in a wildcard, for future extension */
55static inline void add_wildcard(char *str)
56{
57 int len = strlen(str);
58
59 if (str[len - 1] != '*')
60 strcat(str + len, "*");
61}
62
63unsigned int cross_build = 0;
64/**
65 * Check that sizeof(device_id type) are consistent with size of section
66 * in .o file. If in-consistent then userspace and kernel does not agree
67 * on actual size which is a bug.
68 * Also verify that the final entry in the table is all zeros.
69 * Ignore both checks if build host differ from target host and size differs.
70 **/
71static void device_id_check(const char *modname, const char *device_id,
72 unsigned long size, unsigned long id_size,
73 void *symval)
74{
75 int i;
76
77 if (size % id_size || size < id_size) {
78 if (cross_build != 0)
79 return;
80 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
81 "of the size of section __mod_%s_device_table=%lu.\n"
82 "Fix definition of struct %s_device_id "
83 "in mod_devicetable.h\n",
84 modname, device_id, id_size, device_id, size, device_id);
85 }
86 /* Verify last one is a terminator */
87 for (i = 0; i < id_size; i++ ) {
88 if (*(uint8_t*)(symval+size-id_size+i)) {
89 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
90 "The last of %lu is:\n",
91 modname, device_id, id_size, size / id_size);
92 for (i = 0; i < id_size; i++ )
93 fprintf(stderr,"0x%02x ",
94 *(uint8_t*)(symval+size-id_size+i) );
95 fprintf(stderr,"\n");
96 fatal("%s: struct %s_device_id is not terminated "
97 "with a NULL entry!\n", modname, device_id);
98 }
99 }
100}
101
102/* USB is special because the bcdDevice can be matched against a numeric range */
103/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */
104static void do_usb_entry(struct usb_device_id *id,
105 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
106 unsigned char range_lo, unsigned char range_hi,
107 struct module *mod)
108{
109 char alias[500];
110 strcpy(alias, "usb:");
111 ADD(alias, "v", id->match_flags&USB_DEVICE_ID_MATCH_VENDOR,
112 id->idVendor);
113 ADD(alias, "p", id->match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
114 id->idProduct);
115
116 strcat(alias, "d");
117 if (bcdDevice_initial_digits)
118 sprintf(alias + strlen(alias), "%0*X",
119 bcdDevice_initial_digits, bcdDevice_initial);
120 if (range_lo == range_hi)
121 sprintf(alias + strlen(alias), "%u", range_lo);
122 else if (range_lo > 0 || range_hi < 9)
123 sprintf(alias + strlen(alias), "[%u-%u]", range_lo, range_hi);
124 if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1))
125 strcat(alias, "*");
126
127 ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
128 id->bDeviceClass);
129 ADD(alias, "dsc",
130 id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
131 id->bDeviceSubClass);
132 ADD(alias, "dp",
133 id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
134 id->bDeviceProtocol);
135 ADD(alias, "ic",
136 id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
137 id->bInterfaceClass);
138 ADD(alias, "isc",
139 id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
140 id->bInterfaceSubClass);
141 ADD(alias, "ip",
142 id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
143 id->bInterfaceProtocol);
144
145 add_wildcard(alias);
146 buf_printf(&mod->dev_table_buf,
147 "MODULE_ALIAS(\"%s\");\n", alias);
148}
149
150static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod)
151{
152 unsigned int devlo, devhi;
153 unsigned char chi, clo;
154 int ndigits;
155
156 id->match_flags = TO_NATIVE(id->match_flags);
157 id->idVendor = TO_NATIVE(id->idVendor);
158 id->idProduct = TO_NATIVE(id->idProduct);
159
160 devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
161 TO_NATIVE(id->bcdDevice_lo) : 0x0U;
162 devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
163 TO_NATIVE(id->bcdDevice_hi) : ~0x0U;
164
165 /*
166 * Some modules (visor) have empty slots as placeholder for
167 * run-time specification that results in catch-all alias
168 */
169 if (!(id->idVendor | id->idProduct | id->bDeviceClass | id->bInterfaceClass))
170 return;
171
172 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
173 for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
174 clo = devlo & 0xf;
175 chi = devhi & 0xf;
176 if (chi > 9) /* it's bcd not hex */
177 chi = 9;
178 devlo >>= 4;
179 devhi >>= 4;
180
181 if (devlo == devhi || !ndigits) {
182 do_usb_entry(id, devlo, ndigits, clo, chi, mod);
183 break;
184 }
185
186 if (clo > 0)
187 do_usb_entry(id, devlo++, ndigits, clo, 9, mod);
188
189 if (chi < 9)
190 do_usb_entry(id, devhi--, ndigits, 0, chi, mod);
191 }
192}
193
194static void do_usb_table(void *symval, unsigned long size,
195 struct module *mod)
196{
197 unsigned int i;
198 const unsigned long id_size = sizeof(struct usb_device_id);
199
200 device_id_check(mod->name, "usb", size, id_size, symval);
201
202 /* Leave last one: it's the terminator. */
203 size -= id_size;
204
205 for (i = 0; i < size; i += id_size)
206 do_usb_entry_multi(symval + i, mod);
207}
208
209/* Looks like: ieee1394:venNmoNspNverN */
210static int do_ieee1394_entry(const char *filename,
211 struct ieee1394_device_id *id, char *alias)
212{
213 id->match_flags = TO_NATIVE(id->match_flags);
214 id->vendor_id = TO_NATIVE(id->vendor_id);
215 id->model_id = TO_NATIVE(id->model_id);
216 id->specifier_id = TO_NATIVE(id->specifier_id);
217 id->version = TO_NATIVE(id->version);
218
219 strcpy(alias, "ieee1394:");
220 ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID,
221 id->vendor_id);
222 ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID,
223 id->model_id);
224 ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID,
225 id->specifier_id);
226 ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION,
227 id->version);
228
229 add_wildcard(alias);
230 return 1;
231}
232
233/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
234static int do_pci_entry(const char *filename,
235 struct pci_device_id *id, char *alias)
236{
237 /* Class field can be divided into these three. */
238 unsigned char baseclass, subclass, interface,
239 baseclass_mask, subclass_mask, interface_mask;
240
241 id->vendor = TO_NATIVE(id->vendor);
242 id->device = TO_NATIVE(id->device);
243 id->subvendor = TO_NATIVE(id->subvendor);
244 id->subdevice = TO_NATIVE(id->subdevice);
245 id->class = TO_NATIVE(id->class);
246 id->class_mask = TO_NATIVE(id->class_mask);
247
248 strcpy(alias, "pci:");
249 ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor);
250 ADD(alias, "d", id->device != PCI_ANY_ID, id->device);
251 ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor);
252 ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice);
253
254 baseclass = (id->class) >> 16;
255 baseclass_mask = (id->class_mask) >> 16;
256 subclass = (id->class) >> 8;
257 subclass_mask = (id->class_mask) >> 8;
258 interface = id->class;
259 interface_mask = id->class_mask;
260
261 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
262 || (subclass_mask != 0 && subclass_mask != 0xFF)
263 || (interface_mask != 0 && interface_mask != 0xFF)) {
264 warn("Can't handle masks in %s:%04X\n",
265 filename, id->class_mask);
266 return 0;
267 }
268
269 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
270 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
271 ADD(alias, "i", interface_mask == 0xFF, interface);
272 add_wildcard(alias);
273 return 1;
274}
275
276/* looks like: "ccw:tNmNdtNdmN" */
277static int do_ccw_entry(const char *filename,
278 struct ccw_device_id *id, char *alias)
279{
280 id->match_flags = TO_NATIVE(id->match_flags);
281 id->cu_type = TO_NATIVE(id->cu_type);
282 id->cu_model = TO_NATIVE(id->cu_model);
283 id->dev_type = TO_NATIVE(id->dev_type);
284 id->dev_model = TO_NATIVE(id->dev_model);
285
286 strcpy(alias, "ccw:");
287 ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
288 id->cu_type);
289 ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
290 id->cu_model);
291 ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
292 id->dev_type);
293 ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
294 id->dev_model);
295 add_wildcard(alias);
296 return 1;
297}
298
299/* looks like: "ap:tN" */
300static int do_ap_entry(const char *filename,
301 struct ap_device_id *id, char *alias)
302{
303 sprintf(alias, "ap:t%02X*", id->dev_type);
304 return 1;
305}
306
307/* Looks like: "serio:tyNprNidNexN" */
308static int do_serio_entry(const char *filename,
309 struct serio_device_id *id, char *alias)
310{
311 id->type = TO_NATIVE(id->type);
312 id->proto = TO_NATIVE(id->proto);
313 id->id = TO_NATIVE(id->id);
314 id->extra = TO_NATIVE(id->extra);
315
316 strcpy(alias, "serio:");
317 ADD(alias, "ty", id->type != SERIO_ANY, id->type);
318 ADD(alias, "pr", id->proto != SERIO_ANY, id->proto);
319 ADD(alias, "id", id->id != SERIO_ANY, id->id);
320 ADD(alias, "ex", id->extra != SERIO_ANY, id->extra);
321
322 add_wildcard(alias);
323 return 1;
324}
325
326/* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
327static int do_acpi_entry(const char *filename,
328 struct acpi_device_id *id, char *alias)
329{
330 sprintf(alias, "acpi*:%s:*", id->id);
331 return 1;
332}
333
334/* looks like: "pnp:dD" */
335static int do_pnp_entry(const char *filename,
336 struct pnp_device_id *id, char *alias)
337{
338 sprintf(alias, "pnp:d%s*", id->id);
339 return 1;
340}
341
342/* looks like: "pnp:dD" for every device of the card */
343static void do_pnp_card_entries(void *symval, unsigned long size,
344 struct module *mod)
345{
346 const unsigned long id_size = sizeof(struct pnp_card_device_id);
347 const unsigned int count = (size / id_size)-1;
348 const struct pnp_card_device_id *cards = symval;
349 unsigned int i;
350
351 device_id_check(mod->name, "pnp", size, id_size, symval);
352
353 for (i = 0; i < count; i++) {
354 unsigned int j;
355 const struct pnp_card_device_id *card = &cards[i];
356
357 for (j = 0; j < PNP_MAX_DEVICES; j++) {
358 const char *id = (char *)card->devs[j].id;
359 int i2, j2;
360 int dup = 0;
361
362 if (!id[0])
363 break;
364
365 /* find duplicate, already added value */
366 for (i2 = 0; i2 < i && !dup; i2++) {
367 const struct pnp_card_device_id *card2 = &cards[i2];
368
369 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
370 const char *id2 = (char *)card2->devs[j2].id;
371
372 if (!id2[0])
373 break;
374
375 if (!strcmp(id, id2)) {
376 dup = 1;
377 break;
378 }
379 }
380 }
381
382 /* add an individual alias for every device entry */
383 if (!dup)
384 buf_printf(&mod->dev_table_buf,
385 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
386 }
387 }
388}
389
390/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
391static int do_pcmcia_entry(const char *filename,
392 struct pcmcia_device_id *id, char *alias)
393{
394 unsigned int i;
395
396 id->match_flags = TO_NATIVE(id->match_flags);
397 id->manf_id = TO_NATIVE(id->manf_id);
398 id->card_id = TO_NATIVE(id->card_id);
399 id->func_id = TO_NATIVE(id->func_id);
400 id->function = TO_NATIVE(id->function);
401 id->device_no = TO_NATIVE(id->device_no);
402
403 for (i=0; i<4; i++) {
404 id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]);
405 }
406
407 strcpy(alias, "pcmcia:");
408 ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
409 id->manf_id);
410 ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
411 id->card_id);
412 ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
413 id->func_id);
414 ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
415 id->function);
416 ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
417 id->device_no);
418 ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]);
419 ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]);
420 ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]);
421 ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]);
422
423 add_wildcard(alias);
424 return 1;
425}
426
427
428
429static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
430{
431 int len;
432 char *tmp;
433 len = sprintf (alias, "of:N%sT%s",
434 of->name[0] ? of->name : "*",
435 of->type[0] ? of->type : "*");
436
437 if (of->compatible[0])
438 sprintf (&alias[len], "%sC%s",
439 of->type[0] ? "*" : "",
440 of->compatible);
441
442 /* Replace all whitespace with underscores */
443 for (tmp = alias; tmp && *tmp; tmp++)
444 if (isspace (*tmp))
445 *tmp = '_';
446
447 add_wildcard(alias);
448 return 1;
449}
450
451static int do_vio_entry(const char *filename, struct vio_device_id *vio,
452 char *alias)
453{
454 char *tmp;
455
456 sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*",
457 vio->compat[0] ? vio->compat : "*");
458
459 /* Replace all whitespace with underscores */
460 for (tmp = alias; tmp && *tmp; tmp++)
461 if (isspace (*tmp))
462 *tmp = '_';
463
464 add_wildcard(alias);
465 return 1;
466}
467
468#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
469
470static void do_input(char *alias,
471 kernel_ulong_t *arr, unsigned int min, unsigned int max)
472{
473 unsigned int i;
474
475 for (i = min; i < max; i++)
476 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
477 sprintf(alias + strlen(alias), "%X,*", i);
478}
479
480/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
481static int do_input_entry(const char *filename, struct input_device_id *id,
482 char *alias)
483{
484 sprintf(alias, "input:");
485
486 ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype);
487 ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor);
488 ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product);
489 ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version);
490
491 sprintf(alias + strlen(alias), "-e*");
492 if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT)
493 do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX);
494 sprintf(alias + strlen(alias), "k*");
495 if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
496 do_input(alias, id->keybit,
497 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
498 INPUT_DEVICE_ID_KEY_MAX);
499 sprintf(alias + strlen(alias), "r*");
500 if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT)
501 do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX);
502 sprintf(alias + strlen(alias), "a*");
503 if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
504 do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
505 sprintf(alias + strlen(alias), "m*");
506 if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT)
507 do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
508 sprintf(alias + strlen(alias), "l*");
509 if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
510 do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
511 sprintf(alias + strlen(alias), "s*");
512 if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
513 do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
514 sprintf(alias + strlen(alias), "f*");
515 if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT)
516 do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
517 sprintf(alias + strlen(alias), "w*");
518 if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT)
519 do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX);
520 return 1;
521}
522
523static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
524 char *alias)
525{
526 if (eisa->sig[0])
527 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig);
528 else
529 strcat(alias, "*");
530 return 1;
531}
532
533/* Looks like: parisc:tNhvNrevNsvN */
534static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
535 char *alias)
536{
537 id->hw_type = TO_NATIVE(id->hw_type);
538 id->hversion = TO_NATIVE(id->hversion);
539 id->hversion_rev = TO_NATIVE(id->hversion_rev);
540 id->sversion = TO_NATIVE(id->sversion);
541
542 strcpy(alias, "parisc:");
543 ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type);
544 ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion);
545 ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev);
546 ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion);
547
548 add_wildcard(alias);
549 return 1;
550}
551
552/* Looks like: sdio:cNvNdN. */
553static int do_sdio_entry(const char *filename,
554 struct sdio_device_id *id, char *alias)
555{
556 id->class = TO_NATIVE(id->class);
557 id->vendor = TO_NATIVE(id->vendor);
558 id->device = TO_NATIVE(id->device);
559
560 strcpy(alias, "sdio:");
561 ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class);
562 ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor);
563 ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device);
564 add_wildcard(alias);
565 return 1;
566}
567
568/* Looks like: ssb:vNidNrevN. */
569static int do_ssb_entry(const char *filename,
570 struct ssb_device_id *id, char *alias)
571{
572 id->vendor = TO_NATIVE(id->vendor);
573 id->coreid = TO_NATIVE(id->coreid);
574 id->revision = TO_NATIVE(id->revision);
575
576 strcpy(alias, "ssb:");
577 ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor);
578 ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid);
579 ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision);
580 add_wildcard(alias);
581 return 1;
582}
583
584/* Looks like: virtio:dNvN */
585static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
586 char *alias)
587{
588 id->device = TO_NATIVE(id->device);
589 id->vendor = TO_NATIVE(id->vendor);
590
591 strcpy(alias, "virtio:");
592 ADD(alias, "d", 1, id->device);
593 ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor);
594
595 add_wildcard(alias);
596 return 1;
597}
598
599/* Looks like: i2c:S */
600static int do_i2c_entry(const char *filename, struct i2c_device_id *id,
601 char *alias)
602{
603 sprintf(alias, I2C_MODULE_PREFIX "%s", id->name);
604
605 return 1;
606}
607
608/* Ignore any prefix, eg. v850 prepends _ */
609static inline int sym_is(const char *symbol, const char *name)
610{
611 const char *match;
612
613 match = strstr(symbol, name);
614 if (!match)
615 return 0;
616 return match[strlen(symbol)] == '\0';
617}
618
619static void do_table(void *symval, unsigned long size,
620 unsigned long id_size,
621 const char *device_id,
622 void *function,
623 struct module *mod)
624{
625 unsigned int i;
626 char alias[500];
627 int (*do_entry)(const char *, void *entry, char *alias) = function;
628
629 device_id_check(mod->name, device_id, size, id_size, symval);
630 /* Leave last one: it's the terminator. */
631 size -= id_size;
632
633 for (i = 0; i < size; i += id_size) {
634 if (do_entry(mod->name, symval+i, alias)) {
635 buf_printf(&mod->dev_table_buf,
636 "MODULE_ALIAS(\"%s\");\n", alias);
637 }
638 }
639}
640
641/* Create MODULE_ALIAS() statements.
642 * At this time, we cannot write the actual output C source yet,
643 * so we write into the mod->dev_table_buf buffer. */
644void handle_moddevtable(struct module *mod, struct elf_info *info,
645 Elf_Sym *sym, const char *symname)
646{
647 void *symval;
648 char *zeros = NULL;
649
650 /* We're looking for a section relative symbol */
651 if (!sym->st_shndx || sym->st_shndx >= info->hdr->e_shnum)
652 return;
653
654 /* Handle all-NULL symbols allocated into .bss */
655 if (info->sechdrs[sym->st_shndx].sh_type & SHT_NOBITS) {
656 zeros = calloc(1, sym->st_size);
657 symval = zeros;
658 } else {
659 symval = (void *)info->hdr
660 + info->sechdrs[sym->st_shndx].sh_offset
661 + sym->st_value;
662 }
663
664 if (sym_is(symname, "__mod_pci_device_table"))
665 do_table(symval, sym->st_size,
666 sizeof(struct pci_device_id), "pci",
667 do_pci_entry, mod);
668 else if (sym_is(symname, "__mod_usb_device_table"))
669 /* special case to handle bcdDevice ranges */
670 do_usb_table(symval, sym->st_size, mod);
671 else if (sym_is(symname, "__mod_ieee1394_device_table"))
672 do_table(symval, sym->st_size,
673 sizeof(struct ieee1394_device_id), "ieee1394",
674 do_ieee1394_entry, mod);
675 else if (sym_is(symname, "__mod_ccw_device_table"))
676 do_table(symval, sym->st_size,
677 sizeof(struct ccw_device_id), "ccw",
678 do_ccw_entry, mod);
679 else if (sym_is(symname, "__mod_ap_device_table"))
680 do_table(symval, sym->st_size,
681 sizeof(struct ap_device_id), "ap",
682 do_ap_entry, mod);
683 else if (sym_is(symname, "__mod_serio_device_table"))
684 do_table(symval, sym->st_size,
685 sizeof(struct serio_device_id), "serio",
686 do_serio_entry, mod);
687 else if (sym_is(symname, "__mod_acpi_device_table"))
688 do_table(symval, sym->st_size,
689 sizeof(struct acpi_device_id), "acpi",
690 do_acpi_entry, mod);
691 else if (sym_is(symname, "__mod_pnp_device_table"))
692 do_table(symval, sym->st_size,
693 sizeof(struct pnp_device_id), "pnp",
694 do_pnp_entry, mod);
695 else if (sym_is(symname, "__mod_pnp_card_device_table"))
696 do_pnp_card_entries(symval, sym->st_size, mod);
697 else if (sym_is(symname, "__mod_pcmcia_device_table"))
698 do_table(symval, sym->st_size,
699 sizeof(struct pcmcia_device_id), "pcmcia",
700 do_pcmcia_entry, mod);
701 else if (sym_is(symname, "__mod_of_device_table"))
702 do_table(symval, sym->st_size,
703 sizeof(struct of_device_id), "of",
704 do_of_entry, mod);
705 else if (sym_is(symname, "__mod_vio_device_table"))
706 do_table(symval, sym->st_size,
707 sizeof(struct vio_device_id), "vio",
708 do_vio_entry, mod);
709 else if (sym_is(symname, "__mod_input_device_table"))
710 do_table(symval, sym->st_size,
711 sizeof(struct input_device_id), "input",
712 do_input_entry, mod);
713 else if (sym_is(symname, "__mod_eisa_device_table"))
714 do_table(symval, sym->st_size,
715 sizeof(struct eisa_device_id), "eisa",
716 do_eisa_entry, mod);
717 else if (sym_is(symname, "__mod_parisc_device_table"))
718 do_table(symval, sym->st_size,
719 sizeof(struct parisc_device_id), "parisc",
720 do_parisc_entry, mod);
721 else if (sym_is(symname, "__mod_sdio_device_table"))
722 do_table(symval, sym->st_size,
723 sizeof(struct sdio_device_id), "sdio",
724 do_sdio_entry, mod);
725 else if (sym_is(symname, "__mod_ssb_device_table"))
726 do_table(symval, sym->st_size,
727 sizeof(struct ssb_device_id), "ssb",
728 do_ssb_entry, mod);
729 else if (sym_is(symname, "__mod_virtio_device_table"))
730 do_table(symval, sym->st_size,
731 sizeof(struct virtio_device_id), "virtio",
732 do_virtio_entry, mod);
733 else if (sym_is(symname, "__mod_i2c_device_table"))
734 do_table(symval, sym->st_size,
735 sizeof(struct i2c_device_id), "i2c",
736 do_i2c_entry, mod);
737 free(zeros);
738}
739
740/* Now add out buffered information to the generated C source */
741void add_moddevtable(struct buffer *buf, struct module *mod)
742{
743 buf_printf(buf, "\n");
744 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
745 free(mod->dev_table_buf.p);
746}