blob: 1fcaf3284a6a2990128f2589b5856cec3997097c [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* 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;
Rusty Russell1d8f4302005-12-07 21:40:34 +010019#define BITS_PER_LONG 32
Linus Torvalds1da177e2005-04-16 15:20:36 -070020#else
21typedef Elf64_Addr kernel_ulong_t;
Rusty Russell1d8f4302005-12-07 21:40:34 +010022#define BITS_PER_LONG 64
Linus Torvalds1da177e2005-04-16 15:20:36 -070023#endif
24#ifdef __sun__
25#include <inttypes.h>
26#else
27#include <stdint.h>
28#endif
29
Jeff Mahoney5e655772005-07-06 15:44:41 -040030#include <ctype.h>
31
Linus Torvalds1da177e2005-04-16 15:20:36 -070032typedef 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
Sam Ravnborg62070fa2006-03-03 16:46:04 +010037 * even potentially has different endianness and word sizes, since
Linus Torvalds1da177e2005-04-16 15:20:36 -070038 * 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
Jean Delvareac551822008-05-02 20:37:21 +020054/* 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
Sam Ravnborg4ce6efe2008-03-23 21:38:54 +010063unsigned int cross_build = 0;
Sam Ravnborgfb33d812006-07-09 16:26:07 +020064/**
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.
Kees Cooke0049822007-09-16 11:15:46 +020068 * Also verify that the final entry in the table is all zeros.
Sam Ravnborg4ce6efe2008-03-23 21:38:54 +010069 * Ignore both checks if build host differ from target host and size differs.
Sam Ravnborgfb33d812006-07-09 16:26:07 +020070 **/
Kees Cooke0049822007-09-16 11:15:46 +020071static void device_id_check(const char *modname, const char *device_id,
72 unsigned long size, unsigned long id_size,
73 void *symval)
Sam Ravnborgfb33d812006-07-09 16:26:07 +020074{
Kees Cooke0049822007-09-16 11:15:46 +020075 int i;
76
Sam Ravnborgfb33d812006-07-09 16:26:07 +020077 if (size % id_size || size < id_size) {
Sam Ravnborg4ce6efe2008-03-23 21:38:54 +010078 if (cross_build != 0)
79 return;
Sam Ravnborgfb33d812006-07-09 16:26:07 +020080 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 }
Kees Cooke0049822007-09-16 11:15:46 +020086 /* 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 }
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200100}
101
Roman Kaganb19dcd92005-04-22 15:07:01 -0700102/* 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)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108{
Roman Kaganb19dcd92005-04-22 15:07:01 -0700109 char alias[500];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 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);
Roman Kaganb19dcd92005-04-22 15:07:01 -0700115
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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 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);
Roman Kaganb19dcd92005-04-22 15:07:01 -0700144
Jean Delvareac551822008-05-02 20:37:21 +0200145 add_wildcard(alias);
Roman Kaganb19dcd92005-04-22 15:07:01 -0700146 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 */
Greg Kroah-Hartmande6f92b2008-01-28 09:50:12 -0800169 if (!(id->idVendor | id->idProduct | id->bDeviceClass | id->bInterfaceClass))
Roman Kaganb19dcd92005-04-22 15:07:01 -0700170 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
Kees Cooke0049822007-09-16 11:15:46 +0200200 device_id_check(mod->name, "usb", size, id_size, symval);
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200201
Roman Kaganb19dcd92005-04-22 15:07:01 -0700202 /* 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);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207}
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
Jean Delvareac551822008-05-02 20:37:21 +0200229 add_wildcard(alias);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230 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)) {
Sam Ravnborgcb805142006-01-28 16:57:26 +0100264 warn("Can't handle masks in %s:%04X\n",
265 filename, id->class_mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266 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);
Jean Delvareac551822008-05-02 20:37:21 +0200272 add_wildcard(alias);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 return 1;
274}
275
Sam Ravnborg62070fa2006-03-03 16:46:04 +0100276/* looks like: "ccw:tNmNdtNdmN" */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277static 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);
Bastian Blankde1d9c02006-03-06 15:43:00 -0800293 ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294 id->dev_model);
Jean Delvareac551822008-05-02 20:37:21 +0200295 add_wildcard(alias);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 return 1;
297}
298
Martin Schwidefsky1534c382006-09-20 15:58:25 +0200299/* looks like: "ap:tN" */
300static int do_ap_entry(const char *filename,
301 struct ap_device_id *id, char *alias)
302{
Jean Delvareac551822008-05-02 20:37:21 +0200303 sprintf(alias, "ap:t%02X*", id->dev_type);
Martin Schwidefsky1534c382006-09-20 15:58:25 +0200304 return 1;
305}
306
Cornelia Huck7e9db9e2008-07-14 09:58:44 +0200307/* looks like: "css:tN" */
308static int do_css_entry(const char *filename,
309 struct css_device_id *id, char *alias)
310{
311 sprintf(alias, "css:t%01X", id->type);
312 return 1;
313}
314
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315/* Looks like: "serio:tyNprNidNexN" */
316static int do_serio_entry(const char *filename,
317 struct serio_device_id *id, char *alias)
318{
319 id->type = TO_NATIVE(id->type);
320 id->proto = TO_NATIVE(id->proto);
321 id->id = TO_NATIVE(id->id);
322 id->extra = TO_NATIVE(id->extra);
323
324 strcpy(alias, "serio:");
325 ADD(alias, "ty", id->type != SERIO_ANY, id->type);
326 ADD(alias, "pr", id->proto != SERIO_ANY, id->proto);
327 ADD(alias, "id", id->id != SERIO_ANY, id->id);
328 ADD(alias, "ex", id->extra != SERIO_ANY, id->extra);
329
Jean Delvareac551822008-05-02 20:37:21 +0200330 add_wildcard(alias);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700331 return 1;
332}
333
Thomas Renninger29b71a12007-07-23 14:43:51 +0200334/* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
335static int do_acpi_entry(const char *filename,
336 struct acpi_device_id *id, char *alias)
337{
Jean Delvareac551822008-05-02 20:37:21 +0200338 sprintf(alias, "acpi*:%s:*", id->id);
Thomas Renninger29b71a12007-07-23 14:43:51 +0200339 return 1;
340}
341
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342/* looks like: "pnp:dD" */
Kay Sievers22454cb2008-05-28 23:06:47 +0200343static void do_pnp_device_entry(void *symval, unsigned long size,
344 struct module *mod)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345{
Kay Sievers22454cb2008-05-28 23:06:47 +0200346 const unsigned long id_size = sizeof(struct pnp_device_id);
347 const struct pnp_device_id *id = symval;
348
349 device_id_check(mod->name, "pnp", size, id_size, symval);
350
351 buf_printf(&mod->dev_table_buf,
352 "MODULE_ALIAS(\"pnp:d%s*\");\n", id->id);
353 buf_printf(&mod->dev_table_buf,
354 "MODULE_ALIAS(\"acpi*:%s:*\");\n", id->id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355}
356
Kay Sievers0c81eed2008-02-21 00:35:54 +0100357/* looks like: "pnp:dD" for every device of the card */
358static void do_pnp_card_entries(void *symval, unsigned long size,
359 struct module *mod)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360{
Kay Sievers0c81eed2008-02-21 00:35:54 +0100361 const unsigned long id_size = sizeof(struct pnp_card_device_id);
362 const unsigned int count = (size / id_size)-1;
363 const struct pnp_card_device_id *cards = symval;
364 unsigned int i;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365
Kay Sievers0c81eed2008-02-21 00:35:54 +0100366 device_id_check(mod->name, "pnp", size, id_size, symval);
367
368 for (i = 0; i < count; i++) {
369 unsigned int j;
370 const struct pnp_card_device_id *card = &cards[i];
371
372 for (j = 0; j < PNP_MAX_DEVICES; j++) {
373 const char *id = (char *)card->devs[j].id;
374 int i2, j2;
375 int dup = 0;
376
377 if (!id[0])
378 break;
379
380 /* find duplicate, already added value */
381 for (i2 = 0; i2 < i && !dup; i2++) {
382 const struct pnp_card_device_id *card2 = &cards[i2];
383
384 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
385 const char *id2 = (char *)card2->devs[j2].id;
386
387 if (!id2[0])
388 break;
389
390 if (!strcmp(id, id2)) {
391 dup = 1;
392 break;
393 }
394 }
395 }
396
397 /* add an individual alias for every device entry */
Kay Sievers22454cb2008-05-28 23:06:47 +0200398 if (!dup) {
Kay Sievers0c81eed2008-02-21 00:35:54 +0100399 buf_printf(&mod->dev_table_buf,
400 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
Kay Sievers22454cb2008-05-28 23:06:47 +0200401 buf_printf(&mod->dev_table_buf,
402 "MODULE_ALIAS(\"acpi*:%s:*\");\n", id);
403 }
Kay Sievers0c81eed2008-02-21 00:35:54 +0100404 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406}
407
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700408/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
409static int do_pcmcia_entry(const char *filename,
410 struct pcmcia_device_id *id, char *alias)
411{
412 unsigned int i;
413
Kars de Jong4fb7edc2005-09-25 14:39:46 +0200414 id->match_flags = TO_NATIVE(id->match_flags);
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700415 id->manf_id = TO_NATIVE(id->manf_id);
416 id->card_id = TO_NATIVE(id->card_id);
417 id->func_id = TO_NATIVE(id->func_id);
418 id->function = TO_NATIVE(id->function);
419 id->device_no = TO_NATIVE(id->device_no);
Kars de Jong4fb7edc2005-09-25 14:39:46 +0200420
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700421 for (i=0; i<4; i++) {
422 id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]);
423 }
424
425 strcpy(alias, "pcmcia:");
426 ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
427 id->manf_id);
428 ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
429 id->card_id);
430 ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
431 id->func_id);
432 ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
433 id->function);
434 ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
435 id->device_no);
436 ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]);
437 ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]);
438 ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]);
439 ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]);
440
Jean Delvareac551822008-05-02 20:37:21 +0200441 add_wildcard(alias);
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700442 return 1;
443}
444
445
446
Jeff Mahoney5e655772005-07-06 15:44:41 -0400447static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
448{
Sylvain Munautd1ab4232007-05-08 19:59:29 +1000449 int len;
Jeff Mahoney5e655772005-07-06 15:44:41 -0400450 char *tmp;
Sylvain Munautd1ab4232007-05-08 19:59:29 +1000451 len = sprintf (alias, "of:N%sT%s",
Jeff Mahoney5e655772005-07-06 15:44:41 -0400452 of->name[0] ? of->name : "*",
Sylvain Munautd1ab4232007-05-08 19:59:29 +1000453 of->type[0] ? of->type : "*");
454
455 if (of->compatible[0])
456 sprintf (&alias[len], "%sC%s",
457 of->type[0] ? "*" : "",
458 of->compatible);
Jeff Mahoney5e655772005-07-06 15:44:41 -0400459
460 /* Replace all whitespace with underscores */
461 for (tmp = alias; tmp && *tmp; tmp++)
462 if (isspace (*tmp))
463 *tmp = '_';
464
Jean Delvareac551822008-05-02 20:37:21 +0200465 add_wildcard(alias);
Jeff Mahoney5e655772005-07-06 15:44:41 -0400466 return 1;
467}
468
Stephen Rothwellfb120da2005-08-17 16:42:59 +1000469static int do_vio_entry(const char *filename, struct vio_device_id *vio,
470 char *alias)
471{
472 char *tmp;
473
474 sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*",
475 vio->compat[0] ? vio->compat : "*");
476
477 /* Replace all whitespace with underscores */
478 for (tmp = alias; tmp && *tmp; tmp++)
479 if (isspace (*tmp))
480 *tmp = '_';
481
Jean Delvareac551822008-05-02 20:37:21 +0200482 add_wildcard(alias);
Stephen Rothwellfb120da2005-08-17 16:42:59 +1000483 return 1;
484}
485
Rusty Russell1d8f4302005-12-07 21:40:34 +0100486#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
487
488static void do_input(char *alias,
489 kernel_ulong_t *arr, unsigned int min, unsigned int max)
490{
491 unsigned int i;
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400492
493 for (i = min; i < max; i++)
Hans de Goedee0e92632006-08-15 12:09:27 +0200494 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400495 sprintf(alias + strlen(alias), "%X,*", i);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100496}
497
498/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
499static int do_input_entry(const char *filename, struct input_device_id *id,
500 char *alias)
501{
502 sprintf(alias, "input:");
503
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400504 ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype);
505 ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor);
506 ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product);
507 ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100508
509 sprintf(alias + strlen(alias), "-e*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400510 if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100511 do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100512 sprintf(alias + strlen(alias), "k*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400513 if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100514 do_input(alias, id->keybit,
515 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
516 INPUT_DEVICE_ID_KEY_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100517 sprintf(alias + strlen(alias), "r*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400518 if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100519 do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100520 sprintf(alias + strlen(alias), "a*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400521 if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100522 do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100523 sprintf(alias + strlen(alias), "m*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400524 if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100525 do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100526 sprintf(alias + strlen(alias), "l*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400527 if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100528 do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100529 sprintf(alias + strlen(alias), "s*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400530 if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100531 do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100532 sprintf(alias + strlen(alias), "f*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400533 if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100534 do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100535 sprintf(alias + strlen(alias), "w*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400536 if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100537 do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100538 return 1;
539}
540
Michael Tokarev07563c72006-09-27 01:50:56 -0700541static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
542 char *alias)
543{
544 if (eisa->sig[0])
545 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig);
Jean Delvareac551822008-05-02 20:37:21 +0200546 else
547 strcat(alias, "*");
Michael Tokarev07563c72006-09-27 01:50:56 -0700548 return 1;
549}
550
Kyle McMartinf3cf2672007-01-13 14:58:21 -0500551/* Looks like: parisc:tNhvNrevNsvN */
552static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
553 char *alias)
554{
555 id->hw_type = TO_NATIVE(id->hw_type);
556 id->hversion = TO_NATIVE(id->hversion);
557 id->hversion_rev = TO_NATIVE(id->hversion_rev);
558 id->sversion = TO_NATIVE(id->sversion);
559
560 strcpy(alias, "parisc:");
Kyle McMartinf354ef82007-01-13 15:02:09 -0500561 ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type);
562 ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion);
563 ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev);
564 ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion);
Kyle McMartinf3cf2672007-01-13 14:58:21 -0500565
Jean Delvareac551822008-05-02 20:37:21 +0200566 add_wildcard(alias);
Kyle McMartinf3cf2672007-01-13 14:58:21 -0500567 return 1;
568}
569
Pierre Ossmand59b66c2007-06-17 11:34:23 +0200570/* Looks like: sdio:cNvNdN. */
571static int do_sdio_entry(const char *filename,
572 struct sdio_device_id *id, char *alias)
573{
574 id->class = TO_NATIVE(id->class);
575 id->vendor = TO_NATIVE(id->vendor);
576 id->device = TO_NATIVE(id->device);
577
578 strcpy(alias, "sdio:");
579 ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class);
580 ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor);
581 ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device);
Jean Delvareac551822008-05-02 20:37:21 +0200582 add_wildcard(alias);
Linus Torvalds038a5002007-10-11 19:40:14 -0700583 return 1;
584}
Pierre Ossmand59b66c2007-06-17 11:34:23 +0200585
Michael Buesch61e115a2007-09-18 15:12:50 -0400586/* Looks like: ssb:vNidNrevN. */
587static int do_ssb_entry(const char *filename,
588 struct ssb_device_id *id, char *alias)
589{
590 id->vendor = TO_NATIVE(id->vendor);
591 id->coreid = TO_NATIVE(id->coreid);
592 id->revision = TO_NATIVE(id->revision);
593
594 strcpy(alias, "ssb:");
595 ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor);
596 ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid);
597 ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision);
Jean Delvareac551822008-05-02 20:37:21 +0200598 add_wildcard(alias);
Pierre Ossmand59b66c2007-06-17 11:34:23 +0200599 return 1;
600}
601
Rusty Russellb01d9f22007-10-22 11:03:39 +1000602/* Looks like: virtio:dNvN */
603static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
604 char *alias)
605{
606 id->device = TO_NATIVE(id->device);
607 id->vendor = TO_NATIVE(id->vendor);
608
609 strcpy(alias, "virtio:");
610 ADD(alias, "d", 1, id->device);
611 ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor);
612
Jean Delvareac551822008-05-02 20:37:21 +0200613 add_wildcard(alias);
Rusty Russellb01d9f22007-10-22 11:03:39 +1000614 return 1;
615}
616
Jean Delvared2653e92008-04-29 23:11:39 +0200617/* Looks like: i2c:S */
618static int do_i2c_entry(const char *filename, struct i2c_device_id *id,
619 char *alias)
620{
621 sprintf(alias, I2C_MODULE_PREFIX "%s", id->name);
622
623 return 1;
624}
625
Linus Torvalds1da177e2005-04-16 15:20:36 -0700626/* Ignore any prefix, eg. v850 prepends _ */
627static inline int sym_is(const char *symbol, const char *name)
628{
629 const char *match;
630
631 match = strstr(symbol, name);
632 if (!match)
633 return 0;
634 return match[strlen(symbol)] == '\0';
635}
636
637static void do_table(void *symval, unsigned long size,
638 unsigned long id_size,
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200639 const char *device_id,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640 void *function,
641 struct module *mod)
642{
643 unsigned int i;
644 char alias[500];
645 int (*do_entry)(const char *, void *entry, char *alias) = function;
646
Kees Cooke0049822007-09-16 11:15:46 +0200647 device_id_check(mod->name, device_id, size, id_size, symval);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648 /* Leave last one: it's the terminator. */
649 size -= id_size;
650
651 for (i = 0; i < size; i += id_size) {
652 if (do_entry(mod->name, symval+i, alias)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653 buf_printf(&mod->dev_table_buf,
654 "MODULE_ALIAS(\"%s\");\n", alias);
655 }
656 }
657}
658
659/* Create MODULE_ALIAS() statements.
660 * At this time, we cannot write the actual output C source yet,
661 * so we write into the mod->dev_table_buf buffer. */
662void handle_moddevtable(struct module *mod, struct elf_info *info,
663 Elf_Sym *sym, const char *symname)
664{
665 void *symval;
Kees Cooke0049822007-09-16 11:15:46 +0200666 char *zeros = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667
668 /* We're looking for a section relative symbol */
669 if (!sym->st_shndx || sym->st_shndx >= info->hdr->e_shnum)
670 return;
671
Kees Cooke0049822007-09-16 11:15:46 +0200672 /* Handle all-NULL symbols allocated into .bss */
673 if (info->sechdrs[sym->st_shndx].sh_type & SHT_NOBITS) {
674 zeros = calloc(1, sym->st_size);
675 symval = zeros;
676 } else {
677 symval = (void *)info->hdr
678 + info->sechdrs[sym->st_shndx].sh_offset
679 + sym->st_value;
680 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681
682 if (sym_is(symname, "__mod_pci_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200683 do_table(symval, sym->st_size,
684 sizeof(struct pci_device_id), "pci",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685 do_pci_entry, mod);
686 else if (sym_is(symname, "__mod_usb_device_table"))
Roman Kaganb19dcd92005-04-22 15:07:01 -0700687 /* special case to handle bcdDevice ranges */
688 do_usb_table(symval, sym->st_size, mod);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689 else if (sym_is(symname, "__mod_ieee1394_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200690 do_table(symval, sym->st_size,
691 sizeof(struct ieee1394_device_id), "ieee1394",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692 do_ieee1394_entry, mod);
693 else if (sym_is(symname, "__mod_ccw_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200694 do_table(symval, sym->st_size,
695 sizeof(struct ccw_device_id), "ccw",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 do_ccw_entry, mod);
Martin Schwidefsky1534c382006-09-20 15:58:25 +0200697 else if (sym_is(symname, "__mod_ap_device_table"))
698 do_table(symval, sym->st_size,
699 sizeof(struct ap_device_id), "ap",
700 do_ap_entry, mod);
Cornelia Huck7e9db9e2008-07-14 09:58:44 +0200701 else if (sym_is(symname, "__mod_css_device_table"))
702 do_table(symval, sym->st_size,
703 sizeof(struct css_device_id), "css",
704 do_css_entry, mod);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705 else if (sym_is(symname, "__mod_serio_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200706 do_table(symval, sym->st_size,
707 sizeof(struct serio_device_id), "serio",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708 do_serio_entry, mod);
Thomas Renninger29b71a12007-07-23 14:43:51 +0200709 else if (sym_is(symname, "__mod_acpi_device_table"))
710 do_table(symval, sym->st_size,
711 sizeof(struct acpi_device_id), "acpi",
712 do_acpi_entry, mod);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713 else if (sym_is(symname, "__mod_pnp_device_table"))
Kay Sievers22454cb2008-05-28 23:06:47 +0200714 do_pnp_device_entry(symval, sym->st_size, mod);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 else if (sym_is(symname, "__mod_pnp_card_device_table"))
Kay Sievers0c81eed2008-02-21 00:35:54 +0100716 do_pnp_card_entries(symval, sym->st_size, mod);
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700717 else if (sym_is(symname, "__mod_pcmcia_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200718 do_table(symval, sym->st_size,
719 sizeof(struct pcmcia_device_id), "pcmcia",
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700720 do_pcmcia_entry, mod);
Jeff Mahoney5e655772005-07-06 15:44:41 -0400721 else if (sym_is(symname, "__mod_of_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200722 do_table(symval, sym->st_size,
723 sizeof(struct of_device_id), "of",
Jeff Mahoney5e655772005-07-06 15:44:41 -0400724 do_of_entry, mod);
Stephen Rothwellfb120da2005-08-17 16:42:59 +1000725 else if (sym_is(symname, "__mod_vio_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200726 do_table(symval, sym->st_size,
727 sizeof(struct vio_device_id), "vio",
Stephen Rothwellfb120da2005-08-17 16:42:59 +1000728 do_vio_entry, mod);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100729 else if (sym_is(symname, "__mod_input_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200730 do_table(symval, sym->st_size,
731 sizeof(struct input_device_id), "input",
Rusty Russell1d8f4302005-12-07 21:40:34 +0100732 do_input_entry, mod);
Michael Tokarev07563c72006-09-27 01:50:56 -0700733 else if (sym_is(symname, "__mod_eisa_device_table"))
734 do_table(symval, sym->st_size,
735 sizeof(struct eisa_device_id), "eisa",
736 do_eisa_entry, mod);
Kyle McMartinf3cf2672007-01-13 14:58:21 -0500737 else if (sym_is(symname, "__mod_parisc_device_table"))
738 do_table(symval, sym->st_size,
739 sizeof(struct parisc_device_id), "parisc",
740 do_parisc_entry, mod);
Pierre Ossmand59b66c2007-06-17 11:34:23 +0200741 else if (sym_is(symname, "__mod_sdio_device_table"))
742 do_table(symval, sym->st_size,
743 sizeof(struct sdio_device_id), "sdio",
744 do_sdio_entry, mod);
Michael Buesch61e115a2007-09-18 15:12:50 -0400745 else if (sym_is(symname, "__mod_ssb_device_table"))
746 do_table(symval, sym->st_size,
747 sizeof(struct ssb_device_id), "ssb",
748 do_ssb_entry, mod);
Rusty Russellb01d9f22007-10-22 11:03:39 +1000749 else if (sym_is(symname, "__mod_virtio_device_table"))
750 do_table(symval, sym->st_size,
751 sizeof(struct virtio_device_id), "virtio",
752 do_virtio_entry, mod);
Jean Delvared2653e92008-04-29 23:11:39 +0200753 else if (sym_is(symname, "__mod_i2c_device_table"))
754 do_table(symval, sym->st_size,
755 sizeof(struct i2c_device_id), "i2c",
756 do_i2c_entry, mod);
Kees Cooke0049822007-09-16 11:15:46 +0200757 free(zeros);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758}
759
760/* Now add out buffered information to the generated C source */
761void add_moddevtable(struct buffer *buf, struct module *mod)
762{
763 buf_printf(buf, "\n");
764 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
765 free(mod->dev_table_buf.p);
766}