blob: 348d8687b7c9cad167c6d631ce9e5f1c2038bdf0 [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
Sam Ravnborg4ce6efe2008-03-23 21:38:54 +010054unsigned int cross_build = 0;
Sam Ravnborgfb33d812006-07-09 16:26:07 +020055/**
56 * Check that sizeof(device_id type) are consistent with size of section
57 * in .o file. If in-consistent then userspace and kernel does not agree
58 * on actual size which is a bug.
Kees Cooke0049822007-09-16 11:15:46 +020059 * Also verify that the final entry in the table is all zeros.
Sam Ravnborg4ce6efe2008-03-23 21:38:54 +010060 * Ignore both checks if build host differ from target host and size differs.
Sam Ravnborgfb33d812006-07-09 16:26:07 +020061 **/
Kees Cooke0049822007-09-16 11:15:46 +020062static void device_id_check(const char *modname, const char *device_id,
63 unsigned long size, unsigned long id_size,
64 void *symval)
Sam Ravnborgfb33d812006-07-09 16:26:07 +020065{
Kees Cooke0049822007-09-16 11:15:46 +020066 int i;
67
Sam Ravnborgfb33d812006-07-09 16:26:07 +020068 if (size % id_size || size < id_size) {
Sam Ravnborg4ce6efe2008-03-23 21:38:54 +010069 if (cross_build != 0)
70 return;
Sam Ravnborgfb33d812006-07-09 16:26:07 +020071 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
72 "of the size of section __mod_%s_device_table=%lu.\n"
73 "Fix definition of struct %s_device_id "
74 "in mod_devicetable.h\n",
75 modname, device_id, id_size, device_id, size, device_id);
76 }
Kees Cooke0049822007-09-16 11:15:46 +020077 /* Verify last one is a terminator */
78 for (i = 0; i < id_size; i++ ) {
79 if (*(uint8_t*)(symval+size-id_size+i)) {
80 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
81 "The last of %lu is:\n",
82 modname, device_id, id_size, size / id_size);
83 for (i = 0; i < id_size; i++ )
84 fprintf(stderr,"0x%02x ",
85 *(uint8_t*)(symval+size-id_size+i) );
86 fprintf(stderr,"\n");
87 fatal("%s: struct %s_device_id is not terminated "
88 "with a NULL entry!\n", modname, device_id);
89 }
90 }
Sam Ravnborgfb33d812006-07-09 16:26:07 +020091}
92
Roman Kaganb19dcd92005-04-22 15:07:01 -070093/* USB is special because the bcdDevice can be matched against a numeric range */
94/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */
95static void do_usb_entry(struct usb_device_id *id,
96 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
97 unsigned char range_lo, unsigned char range_hi,
98 struct module *mod)
Linus Torvalds1da177e2005-04-16 15:20:36 -070099{
Roman Kaganb19dcd92005-04-22 15:07:01 -0700100 char alias[500];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 strcpy(alias, "usb:");
102 ADD(alias, "v", id->match_flags&USB_DEVICE_ID_MATCH_VENDOR,
103 id->idVendor);
104 ADD(alias, "p", id->match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
105 id->idProduct);
Roman Kaganb19dcd92005-04-22 15:07:01 -0700106
107 strcat(alias, "d");
108 if (bcdDevice_initial_digits)
109 sprintf(alias + strlen(alias), "%0*X",
110 bcdDevice_initial_digits, bcdDevice_initial);
111 if (range_lo == range_hi)
112 sprintf(alias + strlen(alias), "%u", range_lo);
113 else if (range_lo > 0 || range_hi < 9)
114 sprintf(alias + strlen(alias), "[%u-%u]", range_lo, range_hi);
115 if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1))
116 strcat(alias, "*");
117
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
119 id->bDeviceClass);
120 ADD(alias, "dsc",
121 id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
122 id->bDeviceSubClass);
123 ADD(alias, "dp",
124 id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
125 id->bDeviceProtocol);
126 ADD(alias, "ic",
127 id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
128 id->bInterfaceClass);
129 ADD(alias, "isc",
130 id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
131 id->bInterfaceSubClass);
132 ADD(alias, "ip",
133 id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
134 id->bInterfaceProtocol);
Roman Kaganb19dcd92005-04-22 15:07:01 -0700135
136 /* Always end in a wildcard, for future extension */
137 if (alias[strlen(alias)-1] != '*')
138 strcat(alias, "*");
139 buf_printf(&mod->dev_table_buf,
140 "MODULE_ALIAS(\"%s\");\n", alias);
141}
142
143static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod)
144{
145 unsigned int devlo, devhi;
146 unsigned char chi, clo;
147 int ndigits;
148
149 id->match_flags = TO_NATIVE(id->match_flags);
150 id->idVendor = TO_NATIVE(id->idVendor);
151 id->idProduct = TO_NATIVE(id->idProduct);
152
153 devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
154 TO_NATIVE(id->bcdDevice_lo) : 0x0U;
155 devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
156 TO_NATIVE(id->bcdDevice_hi) : ~0x0U;
157
158 /*
159 * Some modules (visor) have empty slots as placeholder for
160 * run-time specification that results in catch-all alias
161 */
Greg Kroah-Hartmande6f92b2008-01-28 09:50:12 -0800162 if (!(id->idVendor | id->idProduct | id->bDeviceClass | id->bInterfaceClass))
Roman Kaganb19dcd92005-04-22 15:07:01 -0700163 return;
164
165 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
166 for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
167 clo = devlo & 0xf;
168 chi = devhi & 0xf;
169 if (chi > 9) /* it's bcd not hex */
170 chi = 9;
171 devlo >>= 4;
172 devhi >>= 4;
173
174 if (devlo == devhi || !ndigits) {
175 do_usb_entry(id, devlo, ndigits, clo, chi, mod);
176 break;
177 }
178
179 if (clo > 0)
180 do_usb_entry(id, devlo++, ndigits, clo, 9, mod);
181
182 if (chi < 9)
183 do_usb_entry(id, devhi--, ndigits, 0, chi, mod);
184 }
185}
186
187static void do_usb_table(void *symval, unsigned long size,
188 struct module *mod)
189{
190 unsigned int i;
191 const unsigned long id_size = sizeof(struct usb_device_id);
192
Kees Cooke0049822007-09-16 11:15:46 +0200193 device_id_check(mod->name, "usb", size, id_size, symval);
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200194
Roman Kaganb19dcd92005-04-22 15:07:01 -0700195 /* Leave last one: it's the terminator. */
196 size -= id_size;
197
198 for (i = 0; i < size; i += id_size)
199 do_usb_entry_multi(symval + i, mod);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200}
201
202/* Looks like: ieee1394:venNmoNspNverN */
203static int do_ieee1394_entry(const char *filename,
204 struct ieee1394_device_id *id, char *alias)
205{
206 id->match_flags = TO_NATIVE(id->match_flags);
207 id->vendor_id = TO_NATIVE(id->vendor_id);
208 id->model_id = TO_NATIVE(id->model_id);
209 id->specifier_id = TO_NATIVE(id->specifier_id);
210 id->version = TO_NATIVE(id->version);
211
212 strcpy(alias, "ieee1394:");
213 ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID,
214 id->vendor_id);
215 ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID,
216 id->model_id);
217 ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID,
218 id->specifier_id);
219 ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION,
220 id->version);
221
222 return 1;
223}
224
225/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
226static int do_pci_entry(const char *filename,
227 struct pci_device_id *id, char *alias)
228{
229 /* Class field can be divided into these three. */
230 unsigned char baseclass, subclass, interface,
231 baseclass_mask, subclass_mask, interface_mask;
232
233 id->vendor = TO_NATIVE(id->vendor);
234 id->device = TO_NATIVE(id->device);
235 id->subvendor = TO_NATIVE(id->subvendor);
236 id->subdevice = TO_NATIVE(id->subdevice);
237 id->class = TO_NATIVE(id->class);
238 id->class_mask = TO_NATIVE(id->class_mask);
239
240 strcpy(alias, "pci:");
241 ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor);
242 ADD(alias, "d", id->device != PCI_ANY_ID, id->device);
243 ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor);
244 ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice);
245
246 baseclass = (id->class) >> 16;
247 baseclass_mask = (id->class_mask) >> 16;
248 subclass = (id->class) >> 8;
249 subclass_mask = (id->class_mask) >> 8;
250 interface = id->class;
251 interface_mask = id->class_mask;
252
253 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
254 || (subclass_mask != 0 && subclass_mask != 0xFF)
255 || (interface_mask != 0 && interface_mask != 0xFF)) {
Sam Ravnborgcb805142006-01-28 16:57:26 +0100256 warn("Can't handle masks in %s:%04X\n",
257 filename, id->class_mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258 return 0;
259 }
260
261 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
262 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
263 ADD(alias, "i", interface_mask == 0xFF, interface);
264 return 1;
265}
266
Sam Ravnborg62070fa2006-03-03 16:46:04 +0100267/* looks like: "ccw:tNmNdtNdmN" */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268static int do_ccw_entry(const char *filename,
269 struct ccw_device_id *id, char *alias)
270{
271 id->match_flags = TO_NATIVE(id->match_flags);
272 id->cu_type = TO_NATIVE(id->cu_type);
273 id->cu_model = TO_NATIVE(id->cu_model);
274 id->dev_type = TO_NATIVE(id->dev_type);
275 id->dev_model = TO_NATIVE(id->dev_model);
276
277 strcpy(alias, "ccw:");
278 ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
279 id->cu_type);
280 ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
281 id->cu_model);
282 ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
283 id->dev_type);
Bastian Blankde1d9c02006-03-06 15:43:00 -0800284 ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285 id->dev_model);
286 return 1;
287}
288
Martin Schwidefsky1534c382006-09-20 15:58:25 +0200289/* looks like: "ap:tN" */
290static int do_ap_entry(const char *filename,
291 struct ap_device_id *id, char *alias)
292{
293 sprintf(alias, "ap:t%02X", id->dev_type);
294 return 1;
295}
296
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297/* Looks like: "serio:tyNprNidNexN" */
298static int do_serio_entry(const char *filename,
299 struct serio_device_id *id, char *alias)
300{
301 id->type = TO_NATIVE(id->type);
302 id->proto = TO_NATIVE(id->proto);
303 id->id = TO_NATIVE(id->id);
304 id->extra = TO_NATIVE(id->extra);
305
306 strcpy(alias, "serio:");
307 ADD(alias, "ty", id->type != SERIO_ANY, id->type);
308 ADD(alias, "pr", id->proto != SERIO_ANY, id->proto);
309 ADD(alias, "id", id->id != SERIO_ANY, id->id);
310 ADD(alias, "ex", id->extra != SERIO_ANY, id->extra);
311
312 return 1;
313}
314
Thomas Renninger29b71a12007-07-23 14:43:51 +0200315/* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
316static int do_acpi_entry(const char *filename,
317 struct acpi_device_id *id, char *alias)
318{
319 sprintf(alias, "acpi*:%s:", id->id);
320 return 1;
321}
322
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323/* looks like: "pnp:dD" */
324static int do_pnp_entry(const char *filename,
325 struct pnp_device_id *id, char *alias)
326{
327 sprintf(alias, "pnp:d%s", id->id);
328 return 1;
329}
330
331/* looks like: "pnp:cCdD..." */
332static int do_pnp_card_entry(const char *filename,
333 struct pnp_card_device_id *id, char *alias)
334{
335 int i;
336
337 sprintf(alias, "pnp:c%s", id->id);
338 for (i = 0; i < PNP_MAX_DEVICES; i++) {
339 if (! *id->devs[i].id)
340 break;
341 sprintf(alias + strlen(alias), "d%s", id->devs[i].id);
342 }
343 return 1;
344}
345
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700346/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
347static int do_pcmcia_entry(const char *filename,
348 struct pcmcia_device_id *id, char *alias)
349{
350 unsigned int i;
351
Kars de Jong4fb7edc2005-09-25 14:39:46 +0200352 id->match_flags = TO_NATIVE(id->match_flags);
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700353 id->manf_id = TO_NATIVE(id->manf_id);
354 id->card_id = TO_NATIVE(id->card_id);
355 id->func_id = TO_NATIVE(id->func_id);
356 id->function = TO_NATIVE(id->function);
357 id->device_no = TO_NATIVE(id->device_no);
Kars de Jong4fb7edc2005-09-25 14:39:46 +0200358
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700359 for (i=0; i<4; i++) {
360 id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]);
361 }
362
363 strcpy(alias, "pcmcia:");
364 ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
365 id->manf_id);
366 ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
367 id->card_id);
368 ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
369 id->func_id);
370 ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
371 id->function);
372 ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
373 id->device_no);
374 ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]);
375 ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]);
376 ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]);
377 ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]);
378
379 return 1;
380}
381
382
383
Jeff Mahoney5e655772005-07-06 15:44:41 -0400384static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
385{
Sylvain Munautd1ab4232007-05-08 19:59:29 +1000386 int len;
Jeff Mahoney5e655772005-07-06 15:44:41 -0400387 char *tmp;
Sylvain Munautd1ab4232007-05-08 19:59:29 +1000388 len = sprintf (alias, "of:N%sT%s",
Jeff Mahoney5e655772005-07-06 15:44:41 -0400389 of->name[0] ? of->name : "*",
Sylvain Munautd1ab4232007-05-08 19:59:29 +1000390 of->type[0] ? of->type : "*");
391
392 if (of->compatible[0])
393 sprintf (&alias[len], "%sC%s",
394 of->type[0] ? "*" : "",
395 of->compatible);
Jeff Mahoney5e655772005-07-06 15:44:41 -0400396
397 /* Replace all whitespace with underscores */
398 for (tmp = alias; tmp && *tmp; tmp++)
399 if (isspace (*tmp))
400 *tmp = '_';
401
402 return 1;
403}
404
Stephen Rothwellfb120da2005-08-17 16:42:59 +1000405static int do_vio_entry(const char *filename, struct vio_device_id *vio,
406 char *alias)
407{
408 char *tmp;
409
410 sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*",
411 vio->compat[0] ? vio->compat : "*");
412
413 /* Replace all whitespace with underscores */
414 for (tmp = alias; tmp && *tmp; tmp++)
415 if (isspace (*tmp))
416 *tmp = '_';
417
418 return 1;
419}
420
Rusty Russell1d8f4302005-12-07 21:40:34 +0100421#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
422
423static void do_input(char *alias,
424 kernel_ulong_t *arr, unsigned int min, unsigned int max)
425{
426 unsigned int i;
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400427
428 for (i = min; i < max; i++)
Hans de Goedee0e92632006-08-15 12:09:27 +0200429 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400430 sprintf(alias + strlen(alias), "%X,*", i);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100431}
432
433/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
434static int do_input_entry(const char *filename, struct input_device_id *id,
435 char *alias)
436{
437 sprintf(alias, "input:");
438
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400439 ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype);
440 ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor);
441 ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product);
442 ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100443
444 sprintf(alias + strlen(alias), "-e*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400445 if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100446 do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100447 sprintf(alias + strlen(alias), "k*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400448 if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100449 do_input(alias, id->keybit,
450 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
451 INPUT_DEVICE_ID_KEY_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100452 sprintf(alias + strlen(alias), "r*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400453 if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100454 do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100455 sprintf(alias + strlen(alias), "a*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400456 if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100457 do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100458 sprintf(alias + strlen(alias), "m*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400459 if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100460 do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100461 sprintf(alias + strlen(alias), "l*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400462 if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100463 do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100464 sprintf(alias + strlen(alias), "s*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400465 if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100466 do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100467 sprintf(alias + strlen(alias), "f*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400468 if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100469 do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100470 sprintf(alias + strlen(alias), "w*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400471 if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100472 do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100473 return 1;
474}
475
Michael Tokarev07563c72006-09-27 01:50:56 -0700476static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
477 char *alias)
478{
479 if (eisa->sig[0])
480 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig);
481 return 1;
482}
483
Kyle McMartinf3cf2672007-01-13 14:58:21 -0500484/* Looks like: parisc:tNhvNrevNsvN */
485static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
486 char *alias)
487{
488 id->hw_type = TO_NATIVE(id->hw_type);
489 id->hversion = TO_NATIVE(id->hversion);
490 id->hversion_rev = TO_NATIVE(id->hversion_rev);
491 id->sversion = TO_NATIVE(id->sversion);
492
493 strcpy(alias, "parisc:");
Kyle McMartinf354ef82007-01-13 15:02:09 -0500494 ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type);
495 ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion);
496 ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev);
497 ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion);
Kyle McMartinf3cf2672007-01-13 14:58:21 -0500498
499 return 1;
500}
501
Pierre Ossmand59b66c2007-06-17 11:34:23 +0200502/* Looks like: sdio:cNvNdN. */
503static int do_sdio_entry(const char *filename,
504 struct sdio_device_id *id, char *alias)
505{
506 id->class = TO_NATIVE(id->class);
507 id->vendor = TO_NATIVE(id->vendor);
508 id->device = TO_NATIVE(id->device);
509
510 strcpy(alias, "sdio:");
511 ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class);
512 ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor);
513 ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device);
Linus Torvalds038a5002007-10-11 19:40:14 -0700514 return 1;
515}
Pierre Ossmand59b66c2007-06-17 11:34:23 +0200516
Michael Buesch61e115a2007-09-18 15:12:50 -0400517/* Looks like: ssb:vNidNrevN. */
518static int do_ssb_entry(const char *filename,
519 struct ssb_device_id *id, char *alias)
520{
521 id->vendor = TO_NATIVE(id->vendor);
522 id->coreid = TO_NATIVE(id->coreid);
523 id->revision = TO_NATIVE(id->revision);
524
525 strcpy(alias, "ssb:");
526 ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor);
527 ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid);
528 ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision);
Pierre Ossmand59b66c2007-06-17 11:34:23 +0200529 return 1;
530}
531
Rusty Russellb01d9f22007-10-22 11:03:39 +1000532/* Looks like: virtio:dNvN */
533static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
534 char *alias)
535{
536 id->device = TO_NATIVE(id->device);
537 id->vendor = TO_NATIVE(id->vendor);
538
539 strcpy(alias, "virtio:");
540 ADD(alias, "d", 1, id->device);
541 ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor);
542
543 return 1;
544}
545
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546/* Ignore any prefix, eg. v850 prepends _ */
547static inline int sym_is(const char *symbol, const char *name)
548{
549 const char *match;
550
551 match = strstr(symbol, name);
552 if (!match)
553 return 0;
554 return match[strlen(symbol)] == '\0';
555}
556
557static void do_table(void *symval, unsigned long size,
558 unsigned long id_size,
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200559 const char *device_id,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560 void *function,
561 struct module *mod)
562{
563 unsigned int i;
564 char alias[500];
565 int (*do_entry)(const char *, void *entry, char *alias) = function;
566
Kees Cooke0049822007-09-16 11:15:46 +0200567 device_id_check(mod->name, device_id, size, id_size, symval);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 /* Leave last one: it's the terminator. */
569 size -= id_size;
570
571 for (i = 0; i < size; i += id_size) {
572 if (do_entry(mod->name, symval+i, alias)) {
573 /* Always end in a wildcard, for future extension */
574 if (alias[strlen(alias)-1] != '*')
575 strcat(alias, "*");
576 buf_printf(&mod->dev_table_buf,
577 "MODULE_ALIAS(\"%s\");\n", alias);
578 }
579 }
580}
581
582/* Create MODULE_ALIAS() statements.
583 * At this time, we cannot write the actual output C source yet,
584 * so we write into the mod->dev_table_buf buffer. */
585void handle_moddevtable(struct module *mod, struct elf_info *info,
586 Elf_Sym *sym, const char *symname)
587{
588 void *symval;
Kees Cooke0049822007-09-16 11:15:46 +0200589 char *zeros = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590
591 /* We're looking for a section relative symbol */
592 if (!sym->st_shndx || sym->st_shndx >= info->hdr->e_shnum)
593 return;
594
Kees Cooke0049822007-09-16 11:15:46 +0200595 /* Handle all-NULL symbols allocated into .bss */
596 if (info->sechdrs[sym->st_shndx].sh_type & SHT_NOBITS) {
597 zeros = calloc(1, sym->st_size);
598 symval = zeros;
599 } else {
600 symval = (void *)info->hdr
601 + info->sechdrs[sym->st_shndx].sh_offset
602 + sym->st_value;
603 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604
605 if (sym_is(symname, "__mod_pci_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200606 do_table(symval, sym->st_size,
607 sizeof(struct pci_device_id), "pci",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608 do_pci_entry, mod);
609 else if (sym_is(symname, "__mod_usb_device_table"))
Roman Kaganb19dcd92005-04-22 15:07:01 -0700610 /* special case to handle bcdDevice ranges */
611 do_usb_table(symval, sym->st_size, mod);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 else if (sym_is(symname, "__mod_ieee1394_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200613 do_table(symval, sym->st_size,
614 sizeof(struct ieee1394_device_id), "ieee1394",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 do_ieee1394_entry, mod);
616 else if (sym_is(symname, "__mod_ccw_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200617 do_table(symval, sym->st_size,
618 sizeof(struct ccw_device_id), "ccw",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700619 do_ccw_entry, mod);
Martin Schwidefsky1534c382006-09-20 15:58:25 +0200620 else if (sym_is(symname, "__mod_ap_device_table"))
621 do_table(symval, sym->st_size,
622 sizeof(struct ap_device_id), "ap",
623 do_ap_entry, mod);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624 else if (sym_is(symname, "__mod_serio_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200625 do_table(symval, sym->st_size,
626 sizeof(struct serio_device_id), "serio",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700627 do_serio_entry, mod);
Thomas Renninger29b71a12007-07-23 14:43:51 +0200628 else if (sym_is(symname, "__mod_acpi_device_table"))
629 do_table(symval, sym->st_size,
630 sizeof(struct acpi_device_id), "acpi",
631 do_acpi_entry, mod);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700632 else if (sym_is(symname, "__mod_pnp_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200633 do_table(symval, sym->st_size,
634 sizeof(struct pnp_device_id), "pnp",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635 do_pnp_entry, mod);
636 else if (sym_is(symname, "__mod_pnp_card_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200637 do_table(symval, sym->st_size,
638 sizeof(struct pnp_card_device_id), "pnp_card",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700639 do_pnp_card_entry, mod);
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700640 else if (sym_is(symname, "__mod_pcmcia_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200641 do_table(symval, sym->st_size,
642 sizeof(struct pcmcia_device_id), "pcmcia",
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700643 do_pcmcia_entry, mod);
Jeff Mahoney5e655772005-07-06 15:44:41 -0400644 else if (sym_is(symname, "__mod_of_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200645 do_table(symval, sym->st_size,
646 sizeof(struct of_device_id), "of",
Jeff Mahoney5e655772005-07-06 15:44:41 -0400647 do_of_entry, mod);
Stephen Rothwellfb120da2005-08-17 16:42:59 +1000648 else if (sym_is(symname, "__mod_vio_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200649 do_table(symval, sym->st_size,
650 sizeof(struct vio_device_id), "vio",
Stephen Rothwellfb120da2005-08-17 16:42:59 +1000651 do_vio_entry, mod);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100652 else if (sym_is(symname, "__mod_input_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200653 do_table(symval, sym->st_size,
654 sizeof(struct input_device_id), "input",
Rusty Russell1d8f4302005-12-07 21:40:34 +0100655 do_input_entry, mod);
Michael Tokarev07563c72006-09-27 01:50:56 -0700656 else if (sym_is(symname, "__mod_eisa_device_table"))
657 do_table(symval, sym->st_size,
658 sizeof(struct eisa_device_id), "eisa",
659 do_eisa_entry, mod);
Kyle McMartinf3cf2672007-01-13 14:58:21 -0500660 else if (sym_is(symname, "__mod_parisc_device_table"))
661 do_table(symval, sym->st_size,
662 sizeof(struct parisc_device_id), "parisc",
663 do_parisc_entry, mod);
Pierre Ossmand59b66c2007-06-17 11:34:23 +0200664 else if (sym_is(symname, "__mod_sdio_device_table"))
665 do_table(symval, sym->st_size,
666 sizeof(struct sdio_device_id), "sdio",
667 do_sdio_entry, mod);
Michael Buesch61e115a2007-09-18 15:12:50 -0400668 else if (sym_is(symname, "__mod_ssb_device_table"))
669 do_table(symval, sym->st_size,
670 sizeof(struct ssb_device_id), "ssb",
671 do_ssb_entry, mod);
Rusty Russellb01d9f22007-10-22 11:03:39 +1000672 else if (sym_is(symname, "__mod_virtio_device_table"))
673 do_table(symval, sym->st_size,
674 sizeof(struct virtio_device_id), "virtio",
675 do_virtio_entry, mod);
Kees Cooke0049822007-09-16 11:15:46 +0200676 free(zeros);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677}
678
679/* Now add out buffered information to the generated C source */
680void add_moddevtable(struct buffer *buf, struct module *mod)
681{
682 buf_printf(buf, "\n");
683 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
684 free(mod->dev_table_buf.p);
685}