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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
15/* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
16 * use either stdint.h or inttypes.h for the rest. */
17#if KERNEL_ELFCLASS == ELFCLASS32
18typedef Elf32_Addr kernel_ulong_t;
19#define BITS_PER_LONG 32
20#else
21typedef Elf64_Addr kernel_ulong_t;
22#define BITS_PER_LONG 64
23#endif
24#ifdef __sun__
25#include <inttypes.h>
26#else
27#include <stdint.h>
28#endif
29
30#include <ctype.h>
31#include <stdbool.h>
32
33typedef uint32_t __u32;
34typedef uint16_t __u16;
35typedef unsigned char __u8;
36
37/* Big exception to the "don't include kernel headers into userspace, which
38 * even potentially has different endianness and word sizes, since
39 * we handle those differences explicitly below */
40#include "../../include/linux/mod_devicetable.h"
41
42/* This array collects all instances that use the generic do_table */
43struct devtable {
44 const char *device_id; /* name of table, __mod_<name>_device_table. */
45 unsigned long id_size;
46 void *function;
47};
48
49#define ___cat(a,b) a ## b
50#define __cat(a,b) ___cat(a,b)
51
52/* we need some special handling for this host tool running eventually on
53 * Darwin. The Mach-O section handling is a bit different than ELF section
54 * handling. The differnces in detail are:
55 * a) we have segments which have sections
56 * b) we need a API call to get the respective section symbols */
57#if defined(__MACH__)
58#include <mach-o/getsect.h>
59
60#define INIT_SECTION(name) do { \
61 unsigned long name ## _len; \
62 char *__cat(pstart_,name) = getsectdata("__TEXT", \
63 #name, &__cat(name,_len)); \
64 char *__cat(pstop_,name) = __cat(pstart_,name) + \
65 __cat(name, _len); \
66 __cat(__start_,name) = (void *)__cat(pstart_,name); \
67 __cat(__stop_,name) = (void *)__cat(pstop_,name); \
68 } while (0)
69#define SECTION(name) __attribute__((section("__TEXT, " #name)))
70
71struct devtable **__start___devtable, **__stop___devtable;
72#else
73#define INIT_SECTION(name) /* no-op for ELF */
74#define SECTION(name) __attribute__((section(#name)))
75
76/* We construct a table of pointers in an ELF section (pointers generally
77 * go unpadded by gcc). ld creates boundary syms for us. */
78extern struct devtable *__start___devtable[], *__stop___devtable[];
79#endif /* __MACH__ */
80
81#if __GNUC__ == 3 && __GNUC_MINOR__ < 3
82# define __used __attribute__((__unused__))
83#else
84# define __used __attribute__((__used__))
85#endif
86
87/* Add a table entry. We test function type matches while we're here. */
88#define ADD_TO_DEVTABLE(device_id, type, function) \
89 static struct devtable __cat(devtable,__LINE__) = { \
90 device_id + 0*sizeof((function)((const char *)NULL, \
91 (type *)NULL, \
92 (char *)NULL)), \
93 sizeof(type), (function) }; \
94 static struct devtable *SECTION(__devtable) __used \
95 __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__)
96
97#define ADD(str, sep, cond, field) \
98do { \
99 strcat(str, sep); \
100 if (cond) \
101 sprintf(str + strlen(str), \
102 sizeof(field) == 1 ? "%02X" : \
103 sizeof(field) == 2 ? "%04X" : \
104 sizeof(field) == 4 ? "%08X" : "", \
105 field); \
106 else \
107 sprintf(str + strlen(str), "*"); \
108} while(0)
109
110/* Always end in a wildcard, for future extension */
111static inline void add_wildcard(char *str)
112{
113 int len = strlen(str);
114
115 if (str[len - 1] != '*')
116 strcat(str + len, "*");
117}
118
119unsigned int cross_build = 0;
120/**
121 * Check that sizeof(device_id type) are consistent with size of section
122 * in .o file. If in-consistent then userspace and kernel does not agree
123 * on actual size which is a bug.
124 * Also verify that the final entry in the table is all zeros.
125 * Ignore both checks if build host differ from target host and size differs.
126 **/
127static void device_id_check(const char *modname, const char *device_id,
128 unsigned long size, unsigned long id_size,
129 void *symval)
130{
131 int i;
132
133 if (size % id_size || size < id_size) {
134 if (cross_build != 0)
135 return;
136 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
137 "of the size of section __mod_%s_device_table=%lu.\n"
138 "Fix definition of struct %s_device_id "
139 "in mod_devicetable.h\n",
140 modname, device_id, id_size, device_id, size, device_id);
141 }
142 /* Verify last one is a terminator */
143 for (i = 0; i < id_size; i++ ) {
144 if (*(uint8_t*)(symval+size-id_size+i)) {
145 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
146 "The last of %lu is:\n",
147 modname, device_id, id_size, size / id_size);
148 for (i = 0; i < id_size; i++ )
149 fprintf(stderr,"0x%02x ",
150 *(uint8_t*)(symval+size-id_size+i) );
151 fprintf(stderr,"\n");
152 fatal("%s: struct %s_device_id is not terminated "
153 "with a NULL entry!\n", modname, device_id);
154 }
155 }
156}
157
158/* USB is special because the bcdDevice can be matched against a numeric range */
159/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */
160static void do_usb_entry(struct usb_device_id *id,
161 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
162 unsigned char range_lo, unsigned char range_hi,
163 unsigned char max, struct module *mod)
164{
165 char alias[500];
166 strcpy(alias, "usb:");
167 ADD(alias, "v", id->match_flags&USB_DEVICE_ID_MATCH_VENDOR,
168 id->idVendor);
169 ADD(alias, "p", id->match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
170 id->idProduct);
171
172 strcat(alias, "d");
173 if (bcdDevice_initial_digits)
174 sprintf(alias + strlen(alias), "%0*X",
175 bcdDevice_initial_digits, bcdDevice_initial);
176 if (range_lo == range_hi)
177 sprintf(alias + strlen(alias), "%X", range_lo);
178 else if (range_lo > 0 || range_hi < max) {
179 if (range_lo > 0x9 || range_hi < 0xA)
180 sprintf(alias + strlen(alias),
181 "[%X-%X]",
182 range_lo,
183 range_hi);
184 else {
185 sprintf(alias + strlen(alias),
186 range_lo < 0x9 ? "[%X-9" : "[%X",
187 range_lo);
188 sprintf(alias + strlen(alias),
189 range_hi > 0xA ? "a-%X]" : "%X]",
190 range_lo);
191 }
192 }
193 if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1))
194 strcat(alias, "*");
195
196 ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
197 id->bDeviceClass);
198 ADD(alias, "dsc",
199 id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
200 id->bDeviceSubClass);
201 ADD(alias, "dp",
202 id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
203 id->bDeviceProtocol);
204 ADD(alias, "ic",
205 id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
206 id->bInterfaceClass);
207 ADD(alias, "isc",
208 id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
209 id->bInterfaceSubClass);
210 ADD(alias, "ip",
211 id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
212 id->bInterfaceProtocol);
213
214 add_wildcard(alias);
215 buf_printf(&mod->dev_table_buf,
216 "MODULE_ALIAS(\"%s\");\n", alias);
217}
218
219/* Handles increment/decrement of BCD formatted integers */
220/* Returns the previous value, so it works like i++ or i-- */
221static unsigned int incbcd(unsigned int *bcd,
222 int inc,
223 unsigned char max,
224 size_t chars)
225{
226 unsigned int init = *bcd, i, j;
227 unsigned long long c, dec = 0;
228
229 /* If bcd is not in BCD format, just increment */
230 if (max > 0x9) {
231 *bcd += inc;
232 return init;
233 }
234
235 /* Convert BCD to Decimal */
236 for (i=0 ; i < chars ; i++) {
237 c = (*bcd >> (i << 2)) & 0xf;
238 c = c > 9 ? 9 : c; /* force to bcd just in case */
239 for (j=0 ; j < i ; j++)
240 c = c * 10;
241 dec += c;
242 }
243
244 /* Do our increment/decrement */
245 dec += inc;
246 *bcd = 0;
247
248 /* Convert back to BCD */
249 for (i=0 ; i < chars ; i++) {
250 for (c=1,j=0 ; j < i ; j++)
251 c = c * 10;
252 c = (dec / c) % 10;
253 *bcd += c << (i << 2);
254 }
255 return init;
256}
257
258static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod)
259{
260 unsigned int devlo, devhi;
261 unsigned char chi, clo, max;
262 int ndigits;
263
264 id->match_flags = TO_NATIVE(id->match_flags);
265 id->idVendor = TO_NATIVE(id->idVendor);
266 id->idProduct = TO_NATIVE(id->idProduct);
267
268 devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
269 TO_NATIVE(id->bcdDevice_lo) : 0x0U;
270 devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
271 TO_NATIVE(id->bcdDevice_hi) : ~0x0U;
272
273 /* Figure out if this entry is in bcd or hex format */
274 max = 0x9; /* Default to decimal format */
275 for (ndigits = 0 ; ndigits < sizeof(id->bcdDevice_lo) * 2 ; ndigits++) {
276 clo = (devlo >> (ndigits << 2)) & 0xf;
277 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
278 if (clo > max || chi > max) {
279 max = 0xf;
280 break;
281 }
282 }
283
284 /*
285 * Some modules (visor) have empty slots as placeholder for
286 * run-time specification that results in catch-all alias
287 */
288 if (!(id->idVendor | id->idProduct | id->bDeviceClass | id->bInterfaceClass))
289 return;
290
291 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
292 for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
293 clo = devlo & 0xf;
294 chi = devhi & 0xf;
295 if (chi > max) /* If we are in bcd mode, truncate if necessary */
296 chi = max;
297 devlo >>= 4;
298 devhi >>= 4;
299
300 if (devlo == devhi || !ndigits) {
301 do_usb_entry(id, devlo, ndigits, clo, chi, max, mod);
302 break;
303 }
304
305 if (clo > 0x0)
306 do_usb_entry(id,
307 incbcd(&devlo, 1, max,
308 sizeof(id->bcdDevice_lo) * 2),
309 ndigits, clo, max, max, mod);
310
311 if (chi < max)
312 do_usb_entry(id,
313 incbcd(&devhi, -1, max,
314 sizeof(id->bcdDevice_lo) * 2),
315 ndigits, 0x0, chi, max, mod);
316 }
317}
318
319static void do_usb_table(void *symval, unsigned long size,
320 struct module *mod)
321{
322 unsigned int i;
323 const unsigned long id_size = sizeof(struct usb_device_id);
324
325 device_id_check(mod->name, "usb", size, id_size, symval);
326
327 /* Leave last one: it's the terminator. */
328 size -= id_size;
329
330 for (i = 0; i < size; i += id_size)
331 do_usb_entry_multi(symval + i, mod);
332}
333
334/* Looks like: hid:bNvNpN */
335static int do_hid_entry(const char *filename,
336 struct hid_device_id *id, char *alias)
337{
338 id->bus = TO_NATIVE(id->bus);
339 id->group = TO_NATIVE(id->group);
340 id->vendor = TO_NATIVE(id->vendor);
341 id->product = TO_NATIVE(id->product);
342
343 sprintf(alias, "hid:");
344 ADD(alias, "b", id->bus != HID_BUS_ANY, id->bus);
345 ADD(alias, "g", id->group != HID_GROUP_ANY, id->group);
346 ADD(alias, "v", id->vendor != HID_ANY_ID, id->vendor);
347 ADD(alias, "p", id->product != HID_ANY_ID, id->product);
348
349 return 1;
350}
351ADD_TO_DEVTABLE("hid", struct hid_device_id, do_hid_entry);
352
353/* Looks like: ieee1394:venNmoNspNverN */
354static int do_ieee1394_entry(const char *filename,
355 struct ieee1394_device_id *id, char *alias)
356{
357 id->match_flags = TO_NATIVE(id->match_flags);
358 id->vendor_id = TO_NATIVE(id->vendor_id);
359 id->model_id = TO_NATIVE(id->model_id);
360 id->specifier_id = TO_NATIVE(id->specifier_id);
361 id->version = TO_NATIVE(id->version);
362
363 strcpy(alias, "ieee1394:");
364 ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID,
365 id->vendor_id);
366 ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID,
367 id->model_id);
368 ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID,
369 id->specifier_id);
370 ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION,
371 id->version);
372
373 add_wildcard(alias);
374 return 1;
375}
376ADD_TO_DEVTABLE("ieee1394", struct ieee1394_device_id, do_ieee1394_entry);
377
378/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
379static int do_pci_entry(const char *filename,
380 struct pci_device_id *id, char *alias)
381{
382 /* Class field can be divided into these three. */
383 unsigned char baseclass, subclass, interface,
384 baseclass_mask, subclass_mask, interface_mask;
385
386 id->vendor = TO_NATIVE(id->vendor);
387 id->device = TO_NATIVE(id->device);
388 id->subvendor = TO_NATIVE(id->subvendor);
389 id->subdevice = TO_NATIVE(id->subdevice);
390 id->class = TO_NATIVE(id->class);
391 id->class_mask = TO_NATIVE(id->class_mask);
392
393 strcpy(alias, "pci:");
394 ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor);
395 ADD(alias, "d", id->device != PCI_ANY_ID, id->device);
396 ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor);
397 ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice);
398
399 baseclass = (id->class) >> 16;
400 baseclass_mask = (id->class_mask) >> 16;
401 subclass = (id->class) >> 8;
402 subclass_mask = (id->class_mask) >> 8;
403 interface = id->class;
404 interface_mask = id->class_mask;
405
406 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
407 || (subclass_mask != 0 && subclass_mask != 0xFF)
408 || (interface_mask != 0 && interface_mask != 0xFF)) {
409 warn("Can't handle masks in %s:%04X\n",
410 filename, id->class_mask);
411 return 0;
412 }
413
414 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
415 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
416 ADD(alias, "i", interface_mask == 0xFF, interface);
417 add_wildcard(alias);
418 return 1;
419}
420ADD_TO_DEVTABLE("pci", struct pci_device_id, do_pci_entry);
421
422/* looks like: "ccw:tNmNdtNdmN" */
423static int do_ccw_entry(const char *filename,
424 struct ccw_device_id *id, char *alias)
425{
426 id->match_flags = TO_NATIVE(id->match_flags);
427 id->cu_type = TO_NATIVE(id->cu_type);
428 id->cu_model = TO_NATIVE(id->cu_model);
429 id->dev_type = TO_NATIVE(id->dev_type);
430 id->dev_model = TO_NATIVE(id->dev_model);
431
432 strcpy(alias, "ccw:");
433 ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
434 id->cu_type);
435 ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
436 id->cu_model);
437 ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
438 id->dev_type);
439 ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
440 id->dev_model);
441 add_wildcard(alias);
442 return 1;
443}
444ADD_TO_DEVTABLE("ccw", struct ccw_device_id, do_ccw_entry);
445
446/* looks like: "ap:tN" */
447static int do_ap_entry(const char *filename,
448 struct ap_device_id *id, char *alias)
449{
450 sprintf(alias, "ap:t%02X*", id->dev_type);
451 return 1;
452}
453ADD_TO_DEVTABLE("ap", struct ap_device_id, do_ap_entry);
454
455/* looks like: "css:tN" */
456static int do_css_entry(const char *filename,
457 struct css_device_id *id, char *alias)
458{
459 sprintf(alias, "css:t%01X", id->type);
460 return 1;
461}
462ADD_TO_DEVTABLE("css", struct css_device_id, do_css_entry);
463
464/* Looks like: "serio:tyNprNidNexN" */
465static int do_serio_entry(const char *filename,
466 struct serio_device_id *id, char *alias)
467{
468 id->type = TO_NATIVE(id->type);
469 id->proto = TO_NATIVE(id->proto);
470 id->id = TO_NATIVE(id->id);
471 id->extra = TO_NATIVE(id->extra);
472
473 strcpy(alias, "serio:");
474 ADD(alias, "ty", id->type != SERIO_ANY, id->type);
475 ADD(alias, "pr", id->proto != SERIO_ANY, id->proto);
476 ADD(alias, "id", id->id != SERIO_ANY, id->id);
477 ADD(alias, "ex", id->extra != SERIO_ANY, id->extra);
478
479 add_wildcard(alias);
480 return 1;
481}
482ADD_TO_DEVTABLE("serio", struct serio_device_id, do_serio_entry);
483
484/* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
485static int do_acpi_entry(const char *filename,
486 struct acpi_device_id *id, char *alias)
487{
488 sprintf(alias, "acpi*:%s:*", id->id);
489 return 1;
490}
491ADD_TO_DEVTABLE("acpi", struct acpi_device_id, do_acpi_entry);
492
493/* looks like: "pnp:dD" */
494static void do_pnp_device_entry(void *symval, unsigned long size,
495 struct module *mod)
496{
497 const unsigned long id_size = sizeof(struct pnp_device_id);
498 const unsigned int count = (size / id_size)-1;
499 const struct pnp_device_id *devs = symval;
500 unsigned int i;
501
502 device_id_check(mod->name, "pnp", size, id_size, symval);
503
504 for (i = 0; i < count; i++) {
505 const char *id = (char *)devs[i].id;
506 char acpi_id[sizeof(devs[0].id)];
507 int j;
508
509 buf_printf(&mod->dev_table_buf,
510 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
511
512 /* fix broken pnp bus lowercasing */
513 for (j = 0; j < sizeof(acpi_id); j++)
514 acpi_id[j] = toupper(id[j]);
515 buf_printf(&mod->dev_table_buf,
516 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
517 }
518}
519
520/* looks like: "pnp:dD" for every device of the card */
521static void do_pnp_card_entries(void *symval, unsigned long size,
522 struct module *mod)
523{
524 const unsigned long id_size = sizeof(struct pnp_card_device_id);
525 const unsigned int count = (size / id_size)-1;
526 const struct pnp_card_device_id *cards = symval;
527 unsigned int i;
528
529 device_id_check(mod->name, "pnp", size, id_size, symval);
530
531 for (i = 0; i < count; i++) {
532 unsigned int j;
533 const struct pnp_card_device_id *card = &cards[i];
534
535 for (j = 0; j < PNP_MAX_DEVICES; j++) {
536 const char *id = (char *)card->devs[j].id;
537 int i2, j2;
538 int dup = 0;
539
540 if (!id[0])
541 break;
542
543 /* find duplicate, already added value */
544 for (i2 = 0; i2 < i && !dup; i2++) {
545 const struct pnp_card_device_id *card2 = &cards[i2];
546
547 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
548 const char *id2 = (char *)card2->devs[j2].id;
549
550 if (!id2[0])
551 break;
552
553 if (!strcmp(id, id2)) {
554 dup = 1;
555 break;
556 }
557 }
558 }
559
560 /* add an individual alias for every device entry */
561 if (!dup) {
562 char acpi_id[sizeof(card->devs[0].id)];
563 int k;
564
565 buf_printf(&mod->dev_table_buf,
566 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
567
568 /* fix broken pnp bus lowercasing */
569 for (k = 0; k < sizeof(acpi_id); k++)
570 acpi_id[k] = toupper(id[k]);
571 buf_printf(&mod->dev_table_buf,
572 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
573 }
574 }
575 }
576}
577
578/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
579static int do_pcmcia_entry(const char *filename,
580 struct pcmcia_device_id *id, char *alias)
581{
582 unsigned int i;
583
584 id->match_flags = TO_NATIVE(id->match_flags);
585 id->manf_id = TO_NATIVE(id->manf_id);
586 id->card_id = TO_NATIVE(id->card_id);
587 id->func_id = TO_NATIVE(id->func_id);
588 id->function = TO_NATIVE(id->function);
589 id->device_no = TO_NATIVE(id->device_no);
590
591 for (i=0; i<4; i++) {
592 id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]);
593 }
594
595 strcpy(alias, "pcmcia:");
596 ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
597 id->manf_id);
598 ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
599 id->card_id);
600 ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
601 id->func_id);
602 ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
603 id->function);
604 ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
605 id->device_no);
606 ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]);
607 ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]);
608 ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]);
609 ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]);
610
611 add_wildcard(alias);
612 return 1;
613}
614ADD_TO_DEVTABLE("pcmcia", struct pcmcia_device_id, do_pcmcia_entry);
615
616static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
617{
618 int len;
619 char *tmp;
620 len = sprintf (alias, "of:N%sT%s",
621 of->name[0] ? of->name : "*",
622 of->type[0] ? of->type : "*");
623
624 if (of->compatible[0])
625 sprintf (&alias[len], "%sC%s",
626 of->type[0] ? "*" : "",
627 of->compatible);
628
629 /* Replace all whitespace with underscores */
630 for (tmp = alias; tmp && *tmp; tmp++)
631 if (isspace (*tmp))
632 *tmp = '_';
633
634 add_wildcard(alias);
635 return 1;
636}
637ADD_TO_DEVTABLE("of", struct of_device_id, do_of_entry);
638
639static int do_vio_entry(const char *filename, struct vio_device_id *vio,
640 char *alias)
641{
642 char *tmp;
643
644 sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*",
645 vio->compat[0] ? vio->compat : "*");
646
647 /* Replace all whitespace with underscores */
648 for (tmp = alias; tmp && *tmp; tmp++)
649 if (isspace (*tmp))
650 *tmp = '_';
651
652 add_wildcard(alias);
653 return 1;
654}
655ADD_TO_DEVTABLE("vio", struct vio_device_id, do_vio_entry);
656
657#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
658
659static void do_input(char *alias,
660 kernel_ulong_t *arr, unsigned int min, unsigned int max)
661{
662 unsigned int i;
663
664 for (i = min; i < max; i++)
665 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
666 sprintf(alias + strlen(alias), "%X,*", i);
667}
668
669/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
670static int do_input_entry(const char *filename, struct input_device_id *id,
671 char *alias)
672{
673 sprintf(alias, "input:");
674
675 ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype);
676 ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor);
677 ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product);
678 ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version);
679
680 sprintf(alias + strlen(alias), "-e*");
681 if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT)
682 do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX);
683 sprintf(alias + strlen(alias), "k*");
684 if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
685 do_input(alias, id->keybit,
686 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
687 INPUT_DEVICE_ID_KEY_MAX);
688 sprintf(alias + strlen(alias), "r*");
689 if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT)
690 do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX);
691 sprintf(alias + strlen(alias), "a*");
692 if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
693 do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
694 sprintf(alias + strlen(alias), "m*");
695 if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT)
696 do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
697 sprintf(alias + strlen(alias), "l*");
698 if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
699 do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
700 sprintf(alias + strlen(alias), "s*");
701 if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
702 do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
703 sprintf(alias + strlen(alias), "f*");
704 if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT)
705 do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
706 sprintf(alias + strlen(alias), "w*");
707 if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT)
708 do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX);
709 return 1;
710}
711ADD_TO_DEVTABLE("input", struct input_device_id, do_input_entry);
712
713static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
714 char *alias)
715{
716 if (eisa->sig[0])
717 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig);
718 else
719 strcat(alias, "*");
720 return 1;
721}
722ADD_TO_DEVTABLE("eisa", struct eisa_device_id, do_eisa_entry);
723
724/* Looks like: parisc:tNhvNrevNsvN */
725static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
726 char *alias)
727{
728 id->hw_type = TO_NATIVE(id->hw_type);
729 id->hversion = TO_NATIVE(id->hversion);
730 id->hversion_rev = TO_NATIVE(id->hversion_rev);
731 id->sversion = TO_NATIVE(id->sversion);
732
733 strcpy(alias, "parisc:");
734 ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type);
735 ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion);
736 ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev);
737 ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion);
738
739 add_wildcard(alias);
740 return 1;
741}
742ADD_TO_DEVTABLE("parisc", struct parisc_device_id, do_parisc_entry);
743
744/* Looks like: sdio:cNvNdN. */
745static int do_sdio_entry(const char *filename,
746 struct sdio_device_id *id, char *alias)
747{
748 id->class = TO_NATIVE(id->class);
749 id->vendor = TO_NATIVE(id->vendor);
750 id->device = TO_NATIVE(id->device);
751
752 strcpy(alias, "sdio:");
753 ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class);
754 ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor);
755 ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device);
756 add_wildcard(alias);
757 return 1;
758}
759ADD_TO_DEVTABLE("sdio", struct sdio_device_id, do_sdio_entry);
760
761/* Looks like: ssb:vNidNrevN. */
762static int do_ssb_entry(const char *filename,
763 struct ssb_device_id *id, char *alias)
764{
765 id->vendor = TO_NATIVE(id->vendor);
766 id->coreid = TO_NATIVE(id->coreid);
767 id->revision = TO_NATIVE(id->revision);
768
769 strcpy(alias, "ssb:");
770 ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor);
771 ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid);
772 ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision);
773 add_wildcard(alias);
774 return 1;
775}
776ADD_TO_DEVTABLE("ssb", struct ssb_device_id, do_ssb_entry);
777
778/* Looks like: bcma:mNidNrevNclN. */
779static int do_bcma_entry(const char *filename,
780 struct bcma_device_id *id, char *alias)
781{
782 id->manuf = TO_NATIVE(id->manuf);
783 id->id = TO_NATIVE(id->id);
784 id->rev = TO_NATIVE(id->rev);
785 id->class = TO_NATIVE(id->class);
786
787 strcpy(alias, "bcma:");
788 ADD(alias, "m", id->manuf != BCMA_ANY_MANUF, id->manuf);
789 ADD(alias, "id", id->id != BCMA_ANY_ID, id->id);
790 ADD(alias, "rev", id->rev != BCMA_ANY_REV, id->rev);
791 ADD(alias, "cl", id->class != BCMA_ANY_CLASS, id->class);
792 add_wildcard(alias);
793 return 1;
794}
795ADD_TO_DEVTABLE("bcma", struct bcma_device_id, do_bcma_entry);
796
797/* Looks like: virtio:dNvN */
798static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
799 char *alias)
800{
801 id->device = TO_NATIVE(id->device);
802 id->vendor = TO_NATIVE(id->vendor);
803
804 strcpy(alias, "virtio:");
805 ADD(alias, "d", id->device != VIRTIO_DEV_ANY_ID, id->device);
806 ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor);
807
808 add_wildcard(alias);
809 return 1;
810}
811ADD_TO_DEVTABLE("virtio", struct virtio_device_id, do_virtio_entry);
812
813/*
814 * Looks like: vmbus:guid
815 * Each byte of the guid will be represented by two hex characters
816 * in the name.
817 */
818
819static int do_vmbus_entry(const char *filename, struct hv_vmbus_device_id *id,
820 char *alias)
821{
822 int i;
823 char guid_name[((sizeof(id->guid) + 1)) * 2];
824
825 for (i = 0; i < (sizeof(id->guid) * 2); i += 2)
826 sprintf(&guid_name[i], "%02x", id->guid[i/2]);
827
828 strcpy(alias, "vmbus:");
829 strcat(alias, guid_name);
830
831 return 1;
832}
833ADD_TO_DEVTABLE("vmbus", struct hv_vmbus_device_id, do_vmbus_entry);
834
835/* Looks like: i2c:S */
836static int do_i2c_entry(const char *filename, struct i2c_device_id *id,
837 char *alias)
838{
839 sprintf(alias, I2C_MODULE_PREFIX "%s", id->name);
840
841 return 1;
842}
843ADD_TO_DEVTABLE("i2c", struct i2c_device_id, do_i2c_entry);
844
845/* Looks like: spi:S */
846static int do_spi_entry(const char *filename, struct spi_device_id *id,
847 char *alias)
848{
849 sprintf(alias, SPI_MODULE_PREFIX "%s", id->name);
850
851 return 1;
852}
853ADD_TO_DEVTABLE("spi", struct spi_device_id, do_spi_entry);
854
855static const struct dmifield {
856 const char *prefix;
857 int field;
858} dmi_fields[] = {
859 { "bvn", DMI_BIOS_VENDOR },
860 { "bvr", DMI_BIOS_VERSION },
861 { "bd", DMI_BIOS_DATE },
862 { "svn", DMI_SYS_VENDOR },
863 { "pn", DMI_PRODUCT_NAME },
864 { "pvr", DMI_PRODUCT_VERSION },
865 { "rvn", DMI_BOARD_VENDOR },
866 { "rn", DMI_BOARD_NAME },
867 { "rvr", DMI_BOARD_VERSION },
868 { "cvn", DMI_CHASSIS_VENDOR },
869 { "ct", DMI_CHASSIS_TYPE },
870 { "cvr", DMI_CHASSIS_VERSION },
871 { NULL, DMI_NONE }
872};
873
874static void dmi_ascii_filter(char *d, const char *s)
875{
876 /* Filter out characters we don't want to see in the modalias string */
877 for (; *s; s++)
878 if (*s > ' ' && *s < 127 && *s != ':')
879 *(d++) = *s;
880
881 *d = 0;
882}
883
884
885static int do_dmi_entry(const char *filename, struct dmi_system_id *id,
886 char *alias)
887{
888 int i, j;
889
890 sprintf(alias, "dmi*");
891
892 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
893 for (j = 0; j < 4; j++) {
894 if (id->matches[j].slot &&
895 id->matches[j].slot == dmi_fields[i].field) {
896 sprintf(alias + strlen(alias), ":%s*",
897 dmi_fields[i].prefix);
898 dmi_ascii_filter(alias + strlen(alias),
899 id->matches[j].substr);
900 strcat(alias, "*");
901 }
902 }
903 }
904
905 strcat(alias, ":");
906 return 1;
907}
908ADD_TO_DEVTABLE("dmi", struct dmi_system_id, do_dmi_entry);
909
910static int do_platform_entry(const char *filename,
911 struct platform_device_id *id, char *alias)
912{
913 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", id->name);
914 return 1;
915}
916ADD_TO_DEVTABLE("platform", struct platform_device_id, do_platform_entry);
917
918static int do_mdio_entry(const char *filename,
919 struct mdio_device_id *id, char *alias)
920{
921 int i;
922
923 alias += sprintf(alias, MDIO_MODULE_PREFIX);
924
925 for (i = 0; i < 32; i++) {
926 if (!((id->phy_id_mask >> (31-i)) & 1))
927 *(alias++) = '?';
928 else if ((id->phy_id >> (31-i)) & 1)
929 *(alias++) = '1';
930 else
931 *(alias++) = '0';
932 }
933
934 /* Terminate the string */
935 *alias = 0;
936
937 return 1;
938}
939ADD_TO_DEVTABLE("mdio", struct mdio_device_id, do_mdio_entry);
940
941/* Looks like: zorro:iN. */
942static int do_zorro_entry(const char *filename, struct zorro_device_id *id,
943 char *alias)
944{
945 id->id = TO_NATIVE(id->id);
946 strcpy(alias, "zorro:");
947 ADD(alias, "i", id->id != ZORRO_WILDCARD, id->id);
948 return 1;
949}
950ADD_TO_DEVTABLE("zorro", struct zorro_device_id, do_zorro_entry);
951
952/* looks like: "pnp:dD" */
953static int do_isapnp_entry(const char *filename,
954 struct isapnp_device_id *id, char *alias)
955{
956 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
957 'A' + ((id->vendor >> 2) & 0x3f) - 1,
958 'A' + (((id->vendor & 3) << 3) | ((id->vendor >> 13) & 7)) - 1,
959 'A' + ((id->vendor >> 8) & 0x1f) - 1,
960 (id->function >> 4) & 0x0f, id->function & 0x0f,
961 (id->function >> 12) & 0x0f, (id->function >> 8) & 0x0f);
962 return 1;
963}
964ADD_TO_DEVTABLE("isapnp", struct isapnp_device_id, do_isapnp_entry);
965
966/*
967 * Append a match expression for a single masked hex digit.
968 * outp points to a pointer to the character at which to append.
969 * *outp is updated on return to point just after the appended text,
970 * to facilitate further appending.
971 */
972static void append_nibble_mask(char **outp,
973 unsigned int nibble, unsigned int mask)
974{
975 char *p = *outp;
976 unsigned int i;
977
978 switch (mask) {
979 case 0:
980 *p++ = '?';
981 break;
982
983 case 0xf:
984 p += sprintf(p, "%X", nibble);
985 break;
986
987 default:
988 /*
989 * Dumbly emit a match pattern for all possible matching
990 * digits. This could be improved in some cases using ranges,
991 * but it has the advantage of being trivially correct, and is
992 * often optimal.
993 */
994 *p++ = '[';
995 for (i = 0; i < 0x10; i++)
996 if ((i & mask) == nibble)
997 p += sprintf(p, "%X", i);
998 *p++ = ']';
999 }
1000
1001 /* Ensure that the string remains NUL-terminated: */
1002 *p = '\0';
1003
1004 /* Advance the caller's end-of-string pointer: */
1005 *outp = p;
1006}
1007
1008/*
1009 * looks like: "amba:dN"
1010 *
1011 * N is exactly 8 digits, where each is an upper-case hex digit, or
1012 * a ? or [] pattern matching exactly one digit.
1013 */
1014static int do_amba_entry(const char *filename,
1015 struct amba_id *id, char *alias)
1016{
1017 unsigned int digit;
1018 char *p = alias;
1019
1020 if ((id->id & id->mask) != id->id)
1021 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1022 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1023 filename, id->id, id->mask);
1024
1025 p += sprintf(alias, "amba:d");
1026 for (digit = 0; digit < 8; digit++)
1027 append_nibble_mask(&p,
1028 (id->id >> (4 * (7 - digit))) & 0xf,
1029 (id->mask >> (4 * (7 - digit))) & 0xf);
1030
1031 return 1;
1032}
1033ADD_TO_DEVTABLE("amba", struct amba_id, do_amba_entry);
1034
1035/* LOOKS like x86cpu:vendor:VVVV:family:FFFF:model:MMMM:feature:*,FEAT,*
1036 * All fields are numbers. It would be nicer to use strings for vendor
1037 * and feature, but getting those out of the build system here is too
1038 * complicated.
1039 */
1040
1041static int do_x86cpu_entry(const char *filename, struct x86_cpu_id *id,
1042 char *alias)
1043{
1044 id->feature = TO_NATIVE(id->feature);
1045 id->family = TO_NATIVE(id->family);
1046 id->model = TO_NATIVE(id->model);
1047 id->vendor = TO_NATIVE(id->vendor);
1048
1049 strcpy(alias, "x86cpu:");
1050 ADD(alias, "vendor:", id->vendor != X86_VENDOR_ANY, id->vendor);
1051 ADD(alias, ":family:", id->family != X86_FAMILY_ANY, id->family);
1052 ADD(alias, ":model:", id->model != X86_MODEL_ANY, id->model);
1053 strcat(alias, ":feature:*");
1054 if (id->feature != X86_FEATURE_ANY)
1055 sprintf(alias + strlen(alias), "%04X*", id->feature);
1056 return 1;
1057}
1058ADD_TO_DEVTABLE("x86cpu", struct x86_cpu_id, do_x86cpu_entry);
1059
1060/* Does namelen bytes of name exactly match the symbol? */
1061static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1062{
1063 if (namelen != strlen(symbol))
1064 return false;
1065
1066 return memcmp(name, symbol, namelen) == 0;
1067}
1068
1069static void do_table(void *symval, unsigned long size,
1070 unsigned long id_size,
1071 const char *device_id,
1072 void *function,
1073 struct module *mod)
1074{
1075 unsigned int i;
1076 char alias[500];
1077 int (*do_entry)(const char *, void *entry, char *alias) = function;
1078
1079 device_id_check(mod->name, device_id, size, id_size, symval);
1080 /* Leave last one: it's the terminator. */
1081 size -= id_size;
1082
1083 for (i = 0; i < size; i += id_size) {
1084 if (do_entry(mod->name, symval+i, alias)) {
1085 buf_printf(&mod->dev_table_buf,
1086 "MODULE_ALIAS(\"%s\");\n", alias);
1087 }
1088 }
1089}
1090
1091/* Create MODULE_ALIAS() statements.
1092 * At this time, we cannot write the actual output C source yet,
1093 * so we write into the mod->dev_table_buf buffer. */
1094void handle_moddevtable(struct module *mod, struct elf_info *info,
1095 Elf_Sym *sym, const char *symname)
1096{
1097 void *symval;
1098 char *zeros = NULL;
1099 const char *name;
1100 unsigned int namelen;
1101
1102 /* We're looking for a section relative symbol */
1103 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1104 return;
1105
1106 /* We're looking for an object */
1107 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1108 return;
1109
1110 /* All our symbols are of form <prefix>__mod_XXX_device_table. */
1111 name = strstr(symname, "__mod_");
1112 if (!name)
1113 return;
1114 name += strlen("__mod_");
1115 namelen = strlen(name);
1116 if (namelen < strlen("_device_table"))
1117 return;
1118 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1119 return;
1120 namelen -= strlen("_device_table");
1121
1122 /* Handle all-NULL symbols allocated into .bss */
1123 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1124 zeros = calloc(1, sym->st_size);
1125 symval = zeros;
1126 } else {
1127 symval = (void *)info->hdr
1128 + info->sechdrs[get_secindex(info, sym)].sh_offset
1129 + sym->st_value;
1130 }
1131
1132 /* First handle the "special" cases */
1133 if (sym_is(name, namelen, "usb"))
1134 do_usb_table(symval, sym->st_size, mod);
1135 else if (sym_is(name, namelen, "pnp"))
1136 do_pnp_device_entry(symval, sym->st_size, mod);
1137 else if (sym_is(name, namelen, "pnp_card"))
1138 do_pnp_card_entries(symval, sym->st_size, mod);
1139 else {
1140 struct devtable **p;
1141 INIT_SECTION(__devtable);
1142
1143 for (p = __start___devtable; p < __stop___devtable; p++) {
1144 if (sym_is(name, namelen, (*p)->device_id)) {
1145 do_table(symval, sym->st_size, (*p)->id_size,
1146 (*p)->device_id, (*p)->function, mod);
1147 break;
1148 }
1149 }
1150 }
1151 free(zeros);
1152}
1153
1154/* Now add out buffered information to the generated C source */
1155void add_moddevtable(struct buffer *buf, struct module *mod)
1156{
1157 buf_printf(buf, "\n");
1158 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1159 free(mod->dev_table_buf.p);
1160}
1/* Simple code to turn various tables in an ELF file into alias definitions.
2 * This deals with kernel datastructures where they should be
3 * dealt with: in the kernel source.
4 *
5 * Copyright 2002-2003 Rusty Russell, IBM Corporation
6 * 2003 Kai Germaschewski
7 *
8 *
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
11 */
12
13#include "modpost.h"
14#include "devicetable-offsets.h"
15
16/* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
17 * use either stdint.h or inttypes.h for the rest. */
18#if KERNEL_ELFCLASS == ELFCLASS32
19typedef Elf32_Addr kernel_ulong_t;
20#define BITS_PER_LONG 32
21#else
22typedef Elf64_Addr kernel_ulong_t;
23#define BITS_PER_LONG 64
24#endif
25#ifdef __sun__
26#include <inttypes.h>
27#else
28#include <stdint.h>
29#endif
30
31#include <ctype.h>
32#include <stdbool.h>
33
34typedef uint32_t __u32;
35typedef uint16_t __u16;
36typedef unsigned char __u8;
37
38/* Big exception to the "don't include kernel headers into userspace, which
39 * even potentially has different endianness and word sizes, since
40 * we handle those differences explicitly below */
41#include "../../include/linux/mod_devicetable.h"
42
43/* This array collects all instances that use the generic do_table */
44struct devtable {
45 const char *device_id; /* name of table, __mod_<name>__*_device_table. */
46 unsigned long id_size;
47 void *function;
48};
49
50#define ___cat(a,b) a ## b
51#define __cat(a,b) ___cat(a,b)
52
53/* we need some special handling for this host tool running eventually on
54 * Darwin. The Mach-O section handling is a bit different than ELF section
55 * handling. The differnces in detail are:
56 * a) we have segments which have sections
57 * b) we need a API call to get the respective section symbols */
58#if defined(__MACH__)
59#include <mach-o/getsect.h>
60
61#define INIT_SECTION(name) do { \
62 unsigned long name ## _len; \
63 char *__cat(pstart_,name) = getsectdata("__TEXT", \
64 #name, &__cat(name,_len)); \
65 char *__cat(pstop_,name) = __cat(pstart_,name) + \
66 __cat(name, _len); \
67 __cat(__start_,name) = (void *)__cat(pstart_,name); \
68 __cat(__stop_,name) = (void *)__cat(pstop_,name); \
69 } while (0)
70#define SECTION(name) __attribute__((section("__TEXT, " #name)))
71
72struct devtable **__start___devtable, **__stop___devtable;
73#else
74#define INIT_SECTION(name) /* no-op for ELF */
75#define SECTION(name) __attribute__((section(#name)))
76
77/* We construct a table of pointers in an ELF section (pointers generally
78 * go unpadded by gcc). ld creates boundary syms for us. */
79extern struct devtable *__start___devtable[], *__stop___devtable[];
80#endif /* __MACH__ */
81
82#if !defined(__used)
83# if __GNUC__ == 3 && __GNUC_MINOR__ < 3
84# define __used __attribute__((__unused__))
85# else
86# define __used __attribute__((__used__))
87# endif
88#endif
89
90/* Define a variable f that holds the value of field f of struct devid
91 * based at address m.
92 */
93#define DEF_FIELD(m, devid, f) \
94 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f))
95/* Define a variable f that holds the address of field f of struct devid
96 * based at address m. Due to the way typeof works, for a field of type
97 * T[N] the variable has type T(*)[N], _not_ T*.
98 */
99#define DEF_FIELD_ADDR(m, devid, f) \
100 typeof(((struct devid *)0)->f) *f = ((m) + OFF_##devid##_##f)
101
102/* Add a table entry. We test function type matches while we're here. */
103#define ADD_TO_DEVTABLE(device_id, type, function) \
104 static struct devtable __cat(devtable,__LINE__) = { \
105 device_id + 0*sizeof((function)((const char *)NULL, \
106 (void *)NULL, \
107 (char *)NULL)), \
108 SIZE_##type, (function) }; \
109 static struct devtable *SECTION(__devtable) __used \
110 __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__)
111
112#define ADD(str, sep, cond, field) \
113do { \
114 strcat(str, sep); \
115 if (cond) \
116 sprintf(str + strlen(str), \
117 sizeof(field) == 1 ? "%02X" : \
118 sizeof(field) == 2 ? "%04X" : \
119 sizeof(field) == 4 ? "%08X" : "", \
120 field); \
121 else \
122 sprintf(str + strlen(str), "*"); \
123} while(0)
124
125/* Always end in a wildcard, for future extension */
126static inline void add_wildcard(char *str)
127{
128 int len = strlen(str);
129
130 if (str[len - 1] != '*')
131 strcat(str + len, "*");
132}
133
134/**
135 * Check that sizeof(device_id type) are consistent with size of section
136 * in .o file. If in-consistent then userspace and kernel does not agree
137 * on actual size which is a bug.
138 * Also verify that the final entry in the table is all zeros.
139 * Ignore both checks if build host differ from target host and size differs.
140 **/
141static void device_id_check(const char *modname, const char *device_id,
142 unsigned long size, unsigned long id_size,
143 void *symval)
144{
145 int i;
146
147 if (size % id_size || size < id_size) {
148 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
149 "of the size of "
150 "section __mod_%s__<identifier>_device_table=%lu.\n"
151 "Fix definition of struct %s_device_id "
152 "in mod_devicetable.h\n",
153 modname, device_id, id_size, device_id, size, device_id);
154 }
155 /* Verify last one is a terminator */
156 for (i = 0; i < id_size; i++ ) {
157 if (*(uint8_t*)(symval+size-id_size+i)) {
158 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
159 "The last of %lu is:\n",
160 modname, device_id, id_size, size / id_size);
161 for (i = 0; i < id_size; i++ )
162 fprintf(stderr,"0x%02x ",
163 *(uint8_t*)(symval+size-id_size+i) );
164 fprintf(stderr,"\n");
165 fatal("%s: struct %s_device_id is not terminated "
166 "with a NULL entry!\n", modname, device_id);
167 }
168 }
169}
170
171/* USB is special because the bcdDevice can be matched against a numeric range */
172/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
173static void do_usb_entry(void *symval,
174 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
175 unsigned char range_lo, unsigned char range_hi,
176 unsigned char max, struct module *mod)
177{
178 char alias[500];
179 DEF_FIELD(symval, usb_device_id, match_flags);
180 DEF_FIELD(symval, usb_device_id, idVendor);
181 DEF_FIELD(symval, usb_device_id, idProduct);
182 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
183 DEF_FIELD(symval, usb_device_id, bDeviceClass);
184 DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
185 DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
186 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
187 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
188 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
189 DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
190
191 strcpy(alias, "usb:");
192 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
193 idVendor);
194 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
195 idProduct);
196
197 strcat(alias, "d");
198 if (bcdDevice_initial_digits)
199 sprintf(alias + strlen(alias), "%0*X",
200 bcdDevice_initial_digits, bcdDevice_initial);
201 if (range_lo == range_hi)
202 sprintf(alias + strlen(alias), "%X", range_lo);
203 else if (range_lo > 0 || range_hi < max) {
204 if (range_lo > 0x9 || range_hi < 0xA)
205 sprintf(alias + strlen(alias),
206 "[%X-%X]",
207 range_lo,
208 range_hi);
209 else {
210 sprintf(alias + strlen(alias),
211 range_lo < 0x9 ? "[%X-9" : "[%X",
212 range_lo);
213 sprintf(alias + strlen(alias),
214 range_hi > 0xA ? "A-%X]" : "%X]",
215 range_hi);
216 }
217 }
218 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
219 strcat(alias, "*");
220
221 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
222 bDeviceClass);
223 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
224 bDeviceSubClass);
225 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
226 bDeviceProtocol);
227 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
228 bInterfaceClass);
229 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
230 bInterfaceSubClass);
231 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
232 bInterfaceProtocol);
233 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
234 bInterfaceNumber);
235
236 add_wildcard(alias);
237 buf_printf(&mod->dev_table_buf,
238 "MODULE_ALIAS(\"%s\");\n", alias);
239}
240
241/* Handles increment/decrement of BCD formatted integers */
242/* Returns the previous value, so it works like i++ or i-- */
243static unsigned int incbcd(unsigned int *bcd,
244 int inc,
245 unsigned char max,
246 size_t chars)
247{
248 unsigned int init = *bcd, i, j;
249 unsigned long long c, dec = 0;
250
251 /* If bcd is not in BCD format, just increment */
252 if (max > 0x9) {
253 *bcd += inc;
254 return init;
255 }
256
257 /* Convert BCD to Decimal */
258 for (i=0 ; i < chars ; i++) {
259 c = (*bcd >> (i << 2)) & 0xf;
260 c = c > 9 ? 9 : c; /* force to bcd just in case */
261 for (j=0 ; j < i ; j++)
262 c = c * 10;
263 dec += c;
264 }
265
266 /* Do our increment/decrement */
267 dec += inc;
268 *bcd = 0;
269
270 /* Convert back to BCD */
271 for (i=0 ; i < chars ; i++) {
272 for (c=1,j=0 ; j < i ; j++)
273 c = c * 10;
274 c = (dec / c) % 10;
275 *bcd += c << (i << 2);
276 }
277 return init;
278}
279
280static void do_usb_entry_multi(void *symval, struct module *mod)
281{
282 unsigned int devlo, devhi;
283 unsigned char chi, clo, max;
284 int ndigits;
285
286 DEF_FIELD(symval, usb_device_id, match_flags);
287 DEF_FIELD(symval, usb_device_id, idVendor);
288 DEF_FIELD(symval, usb_device_id, idProduct);
289 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
290 DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
291 DEF_FIELD(symval, usb_device_id, bDeviceClass);
292 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
293
294 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
295 bcdDevice_lo : 0x0U;
296 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
297 bcdDevice_hi : ~0x0U;
298
299 /* Figure out if this entry is in bcd or hex format */
300 max = 0x9; /* Default to decimal format */
301 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
302 clo = (devlo >> (ndigits << 2)) & 0xf;
303 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
304 if (clo > max || chi > max) {
305 max = 0xf;
306 break;
307 }
308 }
309
310 /*
311 * Some modules (visor) have empty slots as placeholder for
312 * run-time specification that results in catch-all alias
313 */
314 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
315 return;
316
317 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
318 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
319 clo = devlo & 0xf;
320 chi = devhi & 0xf;
321 if (chi > max) /* If we are in bcd mode, truncate if necessary */
322 chi = max;
323 devlo >>= 4;
324 devhi >>= 4;
325
326 if (devlo == devhi || !ndigits) {
327 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
328 break;
329 }
330
331 if (clo > 0x0)
332 do_usb_entry(symval,
333 incbcd(&devlo, 1, max,
334 sizeof(bcdDevice_lo) * 2),
335 ndigits, clo, max, max, mod);
336
337 if (chi < max)
338 do_usb_entry(symval,
339 incbcd(&devhi, -1, max,
340 sizeof(bcdDevice_lo) * 2),
341 ndigits, 0x0, chi, max, mod);
342 }
343}
344
345static void do_usb_table(void *symval, unsigned long size,
346 struct module *mod)
347{
348 unsigned int i;
349 const unsigned long id_size = SIZE_usb_device_id;
350
351 device_id_check(mod->name, "usb", size, id_size, symval);
352
353 /* Leave last one: it's the terminator. */
354 size -= id_size;
355
356 for (i = 0; i < size; i += id_size)
357 do_usb_entry_multi(symval + i, mod);
358}
359
360/* Looks like: hid:bNvNpN */
361static int do_hid_entry(const char *filename,
362 void *symval, char *alias)
363{
364 DEF_FIELD(symval, hid_device_id, bus);
365 DEF_FIELD(symval, hid_device_id, group);
366 DEF_FIELD(symval, hid_device_id, vendor);
367 DEF_FIELD(symval, hid_device_id, product);
368
369 sprintf(alias, "hid:");
370 ADD(alias, "b", bus != HID_BUS_ANY, bus);
371 ADD(alias, "g", group != HID_GROUP_ANY, group);
372 ADD(alias, "v", vendor != HID_ANY_ID, vendor);
373 ADD(alias, "p", product != HID_ANY_ID, product);
374
375 return 1;
376}
377ADD_TO_DEVTABLE("hid", hid_device_id, do_hid_entry);
378
379/* Looks like: ieee1394:venNmoNspNverN */
380static int do_ieee1394_entry(const char *filename,
381 void *symval, char *alias)
382{
383 DEF_FIELD(symval, ieee1394_device_id, match_flags);
384 DEF_FIELD(symval, ieee1394_device_id, vendor_id);
385 DEF_FIELD(symval, ieee1394_device_id, model_id);
386 DEF_FIELD(symval, ieee1394_device_id, specifier_id);
387 DEF_FIELD(symval, ieee1394_device_id, version);
388
389 strcpy(alias, "ieee1394:");
390 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
391 vendor_id);
392 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
393 model_id);
394 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
395 specifier_id);
396 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
397 version);
398
399 add_wildcard(alias);
400 return 1;
401}
402ADD_TO_DEVTABLE("ieee1394", ieee1394_device_id, do_ieee1394_entry);
403
404/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
405static int do_pci_entry(const char *filename,
406 void *symval, char *alias)
407{
408 /* Class field can be divided into these three. */
409 unsigned char baseclass, subclass, interface,
410 baseclass_mask, subclass_mask, interface_mask;
411
412 DEF_FIELD(symval, pci_device_id, vendor);
413 DEF_FIELD(symval, pci_device_id, device);
414 DEF_FIELD(symval, pci_device_id, subvendor);
415 DEF_FIELD(symval, pci_device_id, subdevice);
416 DEF_FIELD(symval, pci_device_id, class);
417 DEF_FIELD(symval, pci_device_id, class_mask);
418
419 strcpy(alias, "pci:");
420 ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
421 ADD(alias, "d", device != PCI_ANY_ID, device);
422 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
423 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
424
425 baseclass = (class) >> 16;
426 baseclass_mask = (class_mask) >> 16;
427 subclass = (class) >> 8;
428 subclass_mask = (class_mask) >> 8;
429 interface = class;
430 interface_mask = class_mask;
431
432 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
433 || (subclass_mask != 0 && subclass_mask != 0xFF)
434 || (interface_mask != 0 && interface_mask != 0xFF)) {
435 warn("Can't handle masks in %s:%04X\n",
436 filename, class_mask);
437 return 0;
438 }
439
440 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
441 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
442 ADD(alias, "i", interface_mask == 0xFF, interface);
443 add_wildcard(alias);
444 return 1;
445}
446ADD_TO_DEVTABLE("pci", pci_device_id, do_pci_entry);
447
448/* looks like: "ccw:tNmNdtNdmN" */
449static int do_ccw_entry(const char *filename,
450 void *symval, char *alias)
451{
452 DEF_FIELD(symval, ccw_device_id, match_flags);
453 DEF_FIELD(symval, ccw_device_id, cu_type);
454 DEF_FIELD(symval, ccw_device_id, cu_model);
455 DEF_FIELD(symval, ccw_device_id, dev_type);
456 DEF_FIELD(symval, ccw_device_id, dev_model);
457
458 strcpy(alias, "ccw:");
459 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
460 cu_type);
461 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
462 cu_model);
463 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
464 dev_type);
465 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
466 dev_model);
467 add_wildcard(alias);
468 return 1;
469}
470ADD_TO_DEVTABLE("ccw", ccw_device_id, do_ccw_entry);
471
472/* looks like: "ap:tN" */
473static int do_ap_entry(const char *filename,
474 void *symval, char *alias)
475{
476 DEF_FIELD(symval, ap_device_id, dev_type);
477
478 sprintf(alias, "ap:t%02X*", dev_type);
479 return 1;
480}
481ADD_TO_DEVTABLE("ap", ap_device_id, do_ap_entry);
482
483/* looks like: "css:tN" */
484static int do_css_entry(const char *filename,
485 void *symval, char *alias)
486{
487 DEF_FIELD(symval, css_device_id, type);
488
489 sprintf(alias, "css:t%01X", type);
490 return 1;
491}
492ADD_TO_DEVTABLE("css", css_device_id, do_css_entry);
493
494/* Looks like: "serio:tyNprNidNexN" */
495static int do_serio_entry(const char *filename,
496 void *symval, char *alias)
497{
498 DEF_FIELD(symval, serio_device_id, type);
499 DEF_FIELD(symval, serio_device_id, proto);
500 DEF_FIELD(symval, serio_device_id, id);
501 DEF_FIELD(symval, serio_device_id, extra);
502
503 strcpy(alias, "serio:");
504 ADD(alias, "ty", type != SERIO_ANY, type);
505 ADD(alias, "pr", proto != SERIO_ANY, proto);
506 ADD(alias, "id", id != SERIO_ANY, id);
507 ADD(alias, "ex", extra != SERIO_ANY, extra);
508
509 add_wildcard(alias);
510 return 1;
511}
512ADD_TO_DEVTABLE("serio", serio_device_id, do_serio_entry);
513
514/* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
515static int do_acpi_entry(const char *filename,
516 void *symval, char *alias)
517{
518 DEF_FIELD_ADDR(symval, acpi_device_id, id);
519 sprintf(alias, "acpi*:%s:*", *id);
520 return 1;
521}
522ADD_TO_DEVTABLE("acpi", acpi_device_id, do_acpi_entry);
523
524/* looks like: "pnp:dD" */
525static void do_pnp_device_entry(void *symval, unsigned long size,
526 struct module *mod)
527{
528 const unsigned long id_size = SIZE_pnp_device_id;
529 const unsigned int count = (size / id_size)-1;
530 unsigned int i;
531
532 device_id_check(mod->name, "pnp", size, id_size, symval);
533
534 for (i = 0; i < count; i++) {
535 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id);
536 char acpi_id[sizeof(*id)];
537 int j;
538
539 buf_printf(&mod->dev_table_buf,
540 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
541
542 /* fix broken pnp bus lowercasing */
543 for (j = 0; j < sizeof(acpi_id); j++)
544 acpi_id[j] = toupper((*id)[j]);
545 buf_printf(&mod->dev_table_buf,
546 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
547 }
548}
549
550/* looks like: "pnp:dD" for every device of the card */
551static void do_pnp_card_entries(void *symval, unsigned long size,
552 struct module *mod)
553{
554 const unsigned long id_size = SIZE_pnp_card_device_id;
555 const unsigned int count = (size / id_size)-1;
556 unsigned int i;
557
558 device_id_check(mod->name, "pnp", size, id_size, symval);
559
560 for (i = 0; i < count; i++) {
561 unsigned int j;
562 DEF_FIELD_ADDR(symval + i*id_size, pnp_card_device_id, devs);
563
564 for (j = 0; j < PNP_MAX_DEVICES; j++) {
565 const char *id = (char *)(*devs)[j].id;
566 int i2, j2;
567 int dup = 0;
568
569 if (!id[0])
570 break;
571
572 /* find duplicate, already added value */
573 for (i2 = 0; i2 < i && !dup; i2++) {
574 DEF_FIELD_ADDR(symval + i2*id_size, pnp_card_device_id, devs);
575
576 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
577 const char *id2 = (char *)(*devs)[j2].id;
578
579 if (!id2[0])
580 break;
581
582 if (!strcmp(id, id2)) {
583 dup = 1;
584 break;
585 }
586 }
587 }
588
589 /* add an individual alias for every device entry */
590 if (!dup) {
591 char acpi_id[PNP_ID_LEN];
592 int k;
593
594 buf_printf(&mod->dev_table_buf,
595 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
596
597 /* fix broken pnp bus lowercasing */
598 for (k = 0; k < sizeof(acpi_id); k++)
599 acpi_id[k] = toupper(id[k]);
600 buf_printf(&mod->dev_table_buf,
601 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
602 }
603 }
604 }
605}
606
607/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
608static int do_pcmcia_entry(const char *filename,
609 void *symval, char *alias)
610{
611 unsigned int i;
612 DEF_FIELD(symval, pcmcia_device_id, match_flags);
613 DEF_FIELD(symval, pcmcia_device_id, manf_id);
614 DEF_FIELD(symval, pcmcia_device_id, card_id);
615 DEF_FIELD(symval, pcmcia_device_id, func_id);
616 DEF_FIELD(symval, pcmcia_device_id, function);
617 DEF_FIELD(symval, pcmcia_device_id, device_no);
618 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
619
620 for (i=0; i<4; i++) {
621 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]);
622 }
623
624 strcpy(alias, "pcmcia:");
625 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
626 manf_id);
627 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
628 card_id);
629 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
630 func_id);
631 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
632 function);
633 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
634 device_no);
635 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]);
636 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]);
637 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]);
638 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]);
639
640 add_wildcard(alias);
641 return 1;
642}
643ADD_TO_DEVTABLE("pcmcia", pcmcia_device_id, do_pcmcia_entry);
644
645static int do_of_entry (const char *filename, void *symval, char *alias)
646{
647 int len;
648 char *tmp;
649 DEF_FIELD_ADDR(symval, of_device_id, name);
650 DEF_FIELD_ADDR(symval, of_device_id, type);
651 DEF_FIELD_ADDR(symval, of_device_id, compatible);
652
653 len = sprintf (alias, "of:N%sT%s",
654 (*name)[0] ? *name : "*",
655 (*type)[0] ? *type : "*");
656
657 if (compatible[0])
658 sprintf (&alias[len], "%sC%s",
659 (*type)[0] ? "*" : "",
660 *compatible);
661
662 /* Replace all whitespace with underscores */
663 for (tmp = alias; tmp && *tmp; tmp++)
664 if (isspace (*tmp))
665 *tmp = '_';
666
667 add_wildcard(alias);
668 return 1;
669}
670ADD_TO_DEVTABLE("of", of_device_id, do_of_entry);
671
672static int do_vio_entry(const char *filename, void *symval,
673 char *alias)
674{
675 char *tmp;
676 DEF_FIELD_ADDR(symval, vio_device_id, type);
677 DEF_FIELD_ADDR(symval, vio_device_id, compat);
678
679 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
680 (*compat)[0] ? *compat : "*");
681
682 /* Replace all whitespace with underscores */
683 for (tmp = alias; tmp && *tmp; tmp++)
684 if (isspace (*tmp))
685 *tmp = '_';
686
687 add_wildcard(alias);
688 return 1;
689}
690ADD_TO_DEVTABLE("vio", vio_device_id, do_vio_entry);
691
692#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
693
694static void do_input(char *alias,
695 kernel_ulong_t *arr, unsigned int min, unsigned int max)
696{
697 unsigned int i;
698
699 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++)
700 arr[i] = TO_NATIVE(arr[i]);
701 for (i = min; i < max; i++)
702 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
703 sprintf(alias + strlen(alias), "%X,*", i);
704}
705
706/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
707static int do_input_entry(const char *filename, void *symval,
708 char *alias)
709{
710 DEF_FIELD(symval, input_device_id, flags);
711 DEF_FIELD(symval, input_device_id, bustype);
712 DEF_FIELD(symval, input_device_id, vendor);
713 DEF_FIELD(symval, input_device_id, product);
714 DEF_FIELD(symval, input_device_id, version);
715 DEF_FIELD_ADDR(symval, input_device_id, evbit);
716 DEF_FIELD_ADDR(symval, input_device_id, keybit);
717 DEF_FIELD_ADDR(symval, input_device_id, relbit);
718 DEF_FIELD_ADDR(symval, input_device_id, absbit);
719 DEF_FIELD_ADDR(symval, input_device_id, mscbit);
720 DEF_FIELD_ADDR(symval, input_device_id, ledbit);
721 DEF_FIELD_ADDR(symval, input_device_id, sndbit);
722 DEF_FIELD_ADDR(symval, input_device_id, ffbit);
723 DEF_FIELD_ADDR(symval, input_device_id, swbit);
724
725 sprintf(alias, "input:");
726
727 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
728 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
729 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
730 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
731
732 sprintf(alias + strlen(alias), "-e*");
733 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
734 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
735 sprintf(alias + strlen(alias), "k*");
736 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
737 do_input(alias, *keybit,
738 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
739 INPUT_DEVICE_ID_KEY_MAX);
740 sprintf(alias + strlen(alias), "r*");
741 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
742 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
743 sprintf(alias + strlen(alias), "a*");
744 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
745 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
746 sprintf(alias + strlen(alias), "m*");
747 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
748 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
749 sprintf(alias + strlen(alias), "l*");
750 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
751 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
752 sprintf(alias + strlen(alias), "s*");
753 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
754 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
755 sprintf(alias + strlen(alias), "f*");
756 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
757 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
758 sprintf(alias + strlen(alias), "w*");
759 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
760 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
761 return 1;
762}
763ADD_TO_DEVTABLE("input", input_device_id, do_input_entry);
764
765static int do_eisa_entry(const char *filename, void *symval,
766 char *alias)
767{
768 DEF_FIELD_ADDR(symval, eisa_device_id, sig);
769 if (sig[0])
770 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig);
771 else
772 strcat(alias, "*");
773 return 1;
774}
775ADD_TO_DEVTABLE("eisa", eisa_device_id, do_eisa_entry);
776
777/* Looks like: parisc:tNhvNrevNsvN */
778static int do_parisc_entry(const char *filename, void *symval,
779 char *alias)
780{
781 DEF_FIELD(symval, parisc_device_id, hw_type);
782 DEF_FIELD(symval, parisc_device_id, hversion);
783 DEF_FIELD(symval, parisc_device_id, hversion_rev);
784 DEF_FIELD(symval, parisc_device_id, sversion);
785
786 strcpy(alias, "parisc:");
787 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
788 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
789 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
790 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
791
792 add_wildcard(alias);
793 return 1;
794}
795ADD_TO_DEVTABLE("parisc", parisc_device_id, do_parisc_entry);
796
797/* Looks like: sdio:cNvNdN. */
798static int do_sdio_entry(const char *filename,
799 void *symval, char *alias)
800{
801 DEF_FIELD(symval, sdio_device_id, class);
802 DEF_FIELD(symval, sdio_device_id, vendor);
803 DEF_FIELD(symval, sdio_device_id, device);
804
805 strcpy(alias, "sdio:");
806 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
807 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
808 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
809 add_wildcard(alias);
810 return 1;
811}
812ADD_TO_DEVTABLE("sdio", sdio_device_id, do_sdio_entry);
813
814/* Looks like: ssb:vNidNrevN. */
815static int do_ssb_entry(const char *filename,
816 void *symval, char *alias)
817{
818 DEF_FIELD(symval, ssb_device_id, vendor);
819 DEF_FIELD(symval, ssb_device_id, coreid);
820 DEF_FIELD(symval, ssb_device_id, revision);
821
822 strcpy(alias, "ssb:");
823 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
824 ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
825 ADD(alias, "rev", revision != SSB_ANY_REV, revision);
826 add_wildcard(alias);
827 return 1;
828}
829ADD_TO_DEVTABLE("ssb", ssb_device_id, do_ssb_entry);
830
831/* Looks like: bcma:mNidNrevNclN. */
832static int do_bcma_entry(const char *filename,
833 void *symval, char *alias)
834{
835 DEF_FIELD(symval, bcma_device_id, manuf);
836 DEF_FIELD(symval, bcma_device_id, id);
837 DEF_FIELD(symval, bcma_device_id, rev);
838 DEF_FIELD(symval, bcma_device_id, class);
839
840 strcpy(alias, "bcma:");
841 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
842 ADD(alias, "id", id != BCMA_ANY_ID, id);
843 ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
844 ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
845 add_wildcard(alias);
846 return 1;
847}
848ADD_TO_DEVTABLE("bcma", bcma_device_id, do_bcma_entry);
849
850/* Looks like: virtio:dNvN */
851static int do_virtio_entry(const char *filename, void *symval,
852 char *alias)
853{
854 DEF_FIELD(symval, virtio_device_id, device);
855 DEF_FIELD(symval, virtio_device_id, vendor);
856
857 strcpy(alias, "virtio:");
858 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
859 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
860
861 add_wildcard(alias);
862 return 1;
863}
864ADD_TO_DEVTABLE("virtio", virtio_device_id, do_virtio_entry);
865
866/*
867 * Looks like: vmbus:guid
868 * Each byte of the guid will be represented by two hex characters
869 * in the name.
870 */
871
872static int do_vmbus_entry(const char *filename, void *symval,
873 char *alias)
874{
875 int i;
876 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
877 char guid_name[(sizeof(*guid) + 1) * 2];
878
879 for (i = 0; i < (sizeof(*guid) * 2); i += 2)
880 sprintf(&guid_name[i], "%02x", TO_NATIVE((*guid)[i/2]));
881
882 strcpy(alias, "vmbus:");
883 strcat(alias, guid_name);
884
885 return 1;
886}
887ADD_TO_DEVTABLE("vmbus", hv_vmbus_device_id, do_vmbus_entry);
888
889/* Looks like: i2c:S */
890static int do_i2c_entry(const char *filename, void *symval,
891 char *alias)
892{
893 DEF_FIELD_ADDR(symval, i2c_device_id, name);
894 sprintf(alias, I2C_MODULE_PREFIX "%s", *name);
895
896 return 1;
897}
898ADD_TO_DEVTABLE("i2c", i2c_device_id, do_i2c_entry);
899
900/* Looks like: spi:S */
901static int do_spi_entry(const char *filename, void *symval,
902 char *alias)
903{
904 DEF_FIELD_ADDR(symval, spi_device_id, name);
905 sprintf(alias, SPI_MODULE_PREFIX "%s", *name);
906
907 return 1;
908}
909ADD_TO_DEVTABLE("spi", spi_device_id, do_spi_entry);
910
911static const struct dmifield {
912 const char *prefix;
913 int field;
914} dmi_fields[] = {
915 { "bvn", DMI_BIOS_VENDOR },
916 { "bvr", DMI_BIOS_VERSION },
917 { "bd", DMI_BIOS_DATE },
918 { "svn", DMI_SYS_VENDOR },
919 { "pn", DMI_PRODUCT_NAME },
920 { "pvr", DMI_PRODUCT_VERSION },
921 { "rvn", DMI_BOARD_VENDOR },
922 { "rn", DMI_BOARD_NAME },
923 { "rvr", DMI_BOARD_VERSION },
924 { "cvn", DMI_CHASSIS_VENDOR },
925 { "ct", DMI_CHASSIS_TYPE },
926 { "cvr", DMI_CHASSIS_VERSION },
927 { NULL, DMI_NONE }
928};
929
930static void dmi_ascii_filter(char *d, const char *s)
931{
932 /* Filter out characters we don't want to see in the modalias string */
933 for (; *s; s++)
934 if (*s > ' ' && *s < 127 && *s != ':')
935 *(d++) = *s;
936
937 *d = 0;
938}
939
940
941static int do_dmi_entry(const char *filename, void *symval,
942 char *alias)
943{
944 int i, j;
945 DEF_FIELD_ADDR(symval, dmi_system_id, matches);
946 sprintf(alias, "dmi*");
947
948 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
949 for (j = 0; j < 4; j++) {
950 if ((*matches)[j].slot &&
951 (*matches)[j].slot == dmi_fields[i].field) {
952 sprintf(alias + strlen(alias), ":%s*",
953 dmi_fields[i].prefix);
954 dmi_ascii_filter(alias + strlen(alias),
955 (*matches)[j].substr);
956 strcat(alias, "*");
957 }
958 }
959 }
960
961 strcat(alias, ":");
962 return 1;
963}
964ADD_TO_DEVTABLE("dmi", dmi_system_id, do_dmi_entry);
965
966static int do_platform_entry(const char *filename,
967 void *symval, char *alias)
968{
969 DEF_FIELD_ADDR(symval, platform_device_id, name);
970 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name);
971 return 1;
972}
973ADD_TO_DEVTABLE("platform", platform_device_id, do_platform_entry);
974
975static int do_mdio_entry(const char *filename,
976 void *symval, char *alias)
977{
978 int i;
979 DEF_FIELD(symval, mdio_device_id, phy_id);
980 DEF_FIELD(symval, mdio_device_id, phy_id_mask);
981
982 alias += sprintf(alias, MDIO_MODULE_PREFIX);
983
984 for (i = 0; i < 32; i++) {
985 if (!((phy_id_mask >> (31-i)) & 1))
986 *(alias++) = '?';
987 else if ((phy_id >> (31-i)) & 1)
988 *(alias++) = '1';
989 else
990 *(alias++) = '0';
991 }
992
993 /* Terminate the string */
994 *alias = 0;
995
996 return 1;
997}
998ADD_TO_DEVTABLE("mdio", mdio_device_id, do_mdio_entry);
999
1000/* Looks like: zorro:iN. */
1001static int do_zorro_entry(const char *filename, void *symval,
1002 char *alias)
1003{
1004 DEF_FIELD(symval, zorro_device_id, id);
1005 strcpy(alias, "zorro:");
1006 ADD(alias, "i", id != ZORRO_WILDCARD, id);
1007 return 1;
1008}
1009ADD_TO_DEVTABLE("zorro", zorro_device_id, do_zorro_entry);
1010
1011/* looks like: "pnp:dD" */
1012static int do_isapnp_entry(const char *filename,
1013 void *symval, char *alias)
1014{
1015 DEF_FIELD(symval, isapnp_device_id, vendor);
1016 DEF_FIELD(symval, isapnp_device_id, function);
1017 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
1018 'A' + ((vendor >> 2) & 0x3f) - 1,
1019 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
1020 'A' + ((vendor >> 8) & 0x1f) - 1,
1021 (function >> 4) & 0x0f, function & 0x0f,
1022 (function >> 12) & 0x0f, (function >> 8) & 0x0f);
1023 return 1;
1024}
1025ADD_TO_DEVTABLE("isapnp", isapnp_device_id, do_isapnp_entry);
1026
1027/* Looks like: "ipack:fNvNdN". */
1028static int do_ipack_entry(const char *filename,
1029 void *symval, char *alias)
1030{
1031 DEF_FIELD(symval, ipack_device_id, format);
1032 DEF_FIELD(symval, ipack_device_id, vendor);
1033 DEF_FIELD(symval, ipack_device_id, device);
1034 strcpy(alias, "ipack:");
1035 ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
1036 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
1037 ADD(alias, "d", device != IPACK_ANY_ID, device);
1038 add_wildcard(alias);
1039 return 1;
1040}
1041ADD_TO_DEVTABLE("ipack", ipack_device_id, do_ipack_entry);
1042
1043/*
1044 * Append a match expression for a single masked hex digit.
1045 * outp points to a pointer to the character at which to append.
1046 * *outp is updated on return to point just after the appended text,
1047 * to facilitate further appending.
1048 */
1049static void append_nibble_mask(char **outp,
1050 unsigned int nibble, unsigned int mask)
1051{
1052 char *p = *outp;
1053 unsigned int i;
1054
1055 switch (mask) {
1056 case 0:
1057 *p++ = '?';
1058 break;
1059
1060 case 0xf:
1061 p += sprintf(p, "%X", nibble);
1062 break;
1063
1064 default:
1065 /*
1066 * Dumbly emit a match pattern for all possible matching
1067 * digits. This could be improved in some cases using ranges,
1068 * but it has the advantage of being trivially correct, and is
1069 * often optimal.
1070 */
1071 *p++ = '[';
1072 for (i = 0; i < 0x10; i++)
1073 if ((i & mask) == nibble)
1074 p += sprintf(p, "%X", i);
1075 *p++ = ']';
1076 }
1077
1078 /* Ensure that the string remains NUL-terminated: */
1079 *p = '\0';
1080
1081 /* Advance the caller's end-of-string pointer: */
1082 *outp = p;
1083}
1084
1085/*
1086 * looks like: "amba:dN"
1087 *
1088 * N is exactly 8 digits, where each is an upper-case hex digit, or
1089 * a ? or [] pattern matching exactly one digit.
1090 */
1091static int do_amba_entry(const char *filename,
1092 void *symval, char *alias)
1093{
1094 unsigned int digit;
1095 char *p = alias;
1096 DEF_FIELD(symval, amba_id, id);
1097 DEF_FIELD(symval, amba_id, mask);
1098
1099 if ((id & mask) != id)
1100 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1101 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1102 filename, id, mask);
1103
1104 p += sprintf(alias, "amba:d");
1105 for (digit = 0; digit < 8; digit++)
1106 append_nibble_mask(&p,
1107 (id >> (4 * (7 - digit))) & 0xf,
1108 (mask >> (4 * (7 - digit))) & 0xf);
1109
1110 return 1;
1111}
1112ADD_TO_DEVTABLE("amba", amba_id, do_amba_entry);
1113
1114/* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
1115 * All fields are numbers. It would be nicer to use strings for vendor
1116 * and feature, but getting those out of the build system here is too
1117 * complicated.
1118 */
1119
1120static int do_x86cpu_entry(const char *filename, void *symval,
1121 char *alias)
1122{
1123 DEF_FIELD(symval, x86_cpu_id, feature);
1124 DEF_FIELD(symval, x86_cpu_id, family);
1125 DEF_FIELD(symval, x86_cpu_id, model);
1126 DEF_FIELD(symval, x86_cpu_id, vendor);
1127
1128 strcpy(alias, "cpu:type:x86,");
1129 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
1130 ADD(alias, "fam", family != X86_FAMILY_ANY, family);
1131 ADD(alias, "mod", model != X86_MODEL_ANY, model);
1132 strcat(alias, ":feature:*");
1133 if (feature != X86_FEATURE_ANY)
1134 sprintf(alias + strlen(alias), "%04X*", feature);
1135 return 1;
1136}
1137ADD_TO_DEVTABLE("x86cpu", x86_cpu_id, do_x86cpu_entry);
1138
1139/* LOOKS like cpu:type:*:feature:*FEAT* */
1140static int do_cpu_entry(const char *filename, void *symval, char *alias)
1141{
1142 DEF_FIELD(symval, cpu_feature, feature);
1143
1144 sprintf(alias, "cpu:type:*:feature:*%04X*", feature);
1145 return 1;
1146}
1147ADD_TO_DEVTABLE("cpu", cpu_feature, do_cpu_entry);
1148
1149/* Looks like: mei:S */
1150static int do_mei_entry(const char *filename, void *symval,
1151 char *alias)
1152{
1153 DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
1154
1155 sprintf(alias, MEI_CL_MODULE_PREFIX "%s", *name);
1156
1157 return 1;
1158}
1159ADD_TO_DEVTABLE("mei", mei_cl_device_id, do_mei_entry);
1160
1161/* Looks like: rapidio:vNdNavNadN */
1162static int do_rio_entry(const char *filename,
1163 void *symval, char *alias)
1164{
1165 DEF_FIELD(symval, rio_device_id, did);
1166 DEF_FIELD(symval, rio_device_id, vid);
1167 DEF_FIELD(symval, rio_device_id, asm_did);
1168 DEF_FIELD(symval, rio_device_id, asm_vid);
1169
1170 strcpy(alias, "rapidio:");
1171 ADD(alias, "v", vid != RIO_ANY_ID, vid);
1172 ADD(alias, "d", did != RIO_ANY_ID, did);
1173 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
1174 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
1175
1176 add_wildcard(alias);
1177 return 1;
1178}
1179ADD_TO_DEVTABLE("rapidio", rio_device_id, do_rio_entry);
1180
1181/* Does namelen bytes of name exactly match the symbol? */
1182static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1183{
1184 if (namelen != strlen(symbol))
1185 return false;
1186
1187 return memcmp(name, symbol, namelen) == 0;
1188}
1189
1190static void do_table(void *symval, unsigned long size,
1191 unsigned long id_size,
1192 const char *device_id,
1193 void *function,
1194 struct module *mod)
1195{
1196 unsigned int i;
1197 char alias[500];
1198 int (*do_entry)(const char *, void *entry, char *alias) = function;
1199
1200 device_id_check(mod->name, device_id, size, id_size, symval);
1201 /* Leave last one: it's the terminator. */
1202 size -= id_size;
1203
1204 for (i = 0; i < size; i += id_size) {
1205 if (do_entry(mod->name, symval+i, alias)) {
1206 buf_printf(&mod->dev_table_buf,
1207 "MODULE_ALIAS(\"%s\");\n", alias);
1208 }
1209 }
1210}
1211
1212/* Create MODULE_ALIAS() statements.
1213 * At this time, we cannot write the actual output C source yet,
1214 * so we write into the mod->dev_table_buf buffer. */
1215void handle_moddevtable(struct module *mod, struct elf_info *info,
1216 Elf_Sym *sym, const char *symname)
1217{
1218 void *symval;
1219 char *zeros = NULL;
1220 const char *name, *identifier;
1221 unsigned int namelen;
1222
1223 /* We're looking for a section relative symbol */
1224 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1225 return;
1226
1227 /* We're looking for an object */
1228 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1229 return;
1230
1231 /* All our symbols are of form <prefix>__mod_<name>__<identifier>_device_table. */
1232 name = strstr(symname, "__mod_");
1233 if (!name)
1234 return;
1235 name += strlen("__mod_");
1236 namelen = strlen(name);
1237 if (namelen < strlen("_device_table"))
1238 return;
1239 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1240 return;
1241 identifier = strstr(name, "__");
1242 if (!identifier)
1243 return;
1244 namelen = identifier - name;
1245
1246 /* Handle all-NULL symbols allocated into .bss */
1247 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1248 zeros = calloc(1, sym->st_size);
1249 symval = zeros;
1250 } else {
1251 symval = (void *)info->hdr
1252 + info->sechdrs[get_secindex(info, sym)].sh_offset
1253 + sym->st_value;
1254 }
1255
1256 /* First handle the "special" cases */
1257 if (sym_is(name, namelen, "usb"))
1258 do_usb_table(symval, sym->st_size, mod);
1259 else if (sym_is(name, namelen, "pnp"))
1260 do_pnp_device_entry(symval, sym->st_size, mod);
1261 else if (sym_is(name, namelen, "pnp_card"))
1262 do_pnp_card_entries(symval, sym->st_size, mod);
1263 else {
1264 struct devtable **p;
1265 INIT_SECTION(__devtable);
1266
1267 for (p = __start___devtable; p < __stop___devtable; p++) {
1268 if (sym_is(name, namelen, (*p)->device_id)) {
1269 do_table(symval, sym->st_size, (*p)->id_size,
1270 (*p)->device_id, (*p)->function, mod);
1271 break;
1272 }
1273 }
1274 }
1275 free(zeros);
1276}
1277
1278/* Now add out buffered information to the generated C source */
1279void add_moddevtable(struct buffer *buf, struct module *mod)
1280{
1281 buf_printf(buf, "\n");
1282 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1283 free(mod->dev_table_buf.p);
1284}