blob: 9ddf944cce290b7d38fc2982b852bc93d4c50001 [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 Ravnborgfb33d812006-07-09 16:26:07 +020054/**
55 * Check that sizeof(device_id type) are consistent with size of section
56 * in .o file. If in-consistent then userspace and kernel does not agree
57 * on actual size which is a bug.
Kees Cooke0049822007-09-16 11:15:46 +020058 * Also verify that the final entry in the table is all zeros.
Sam Ravnborgfb33d812006-07-09 16:26:07 +020059 **/
Kees Cooke0049822007-09-16 11:15:46 +020060static void device_id_check(const char *modname, const char *device_id,
61 unsigned long size, unsigned long id_size,
62 void *symval)
Sam Ravnborgfb33d812006-07-09 16:26:07 +020063{
Kees Cooke0049822007-09-16 11:15:46 +020064 int i;
65
Sam Ravnborgfb33d812006-07-09 16:26:07 +020066 if (size % id_size || size < id_size) {
67 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
68 "of the size of section __mod_%s_device_table=%lu.\n"
69 "Fix definition of struct %s_device_id "
70 "in mod_devicetable.h\n",
71 modname, device_id, id_size, device_id, size, device_id);
72 }
Kees Cooke0049822007-09-16 11:15:46 +020073 /* Verify last one is a terminator */
74 for (i = 0; i < id_size; i++ ) {
75 if (*(uint8_t*)(symval+size-id_size+i)) {
76 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
77 "The last of %lu is:\n",
78 modname, device_id, id_size, size / id_size);
79 for (i = 0; i < id_size; i++ )
80 fprintf(stderr,"0x%02x ",
81 *(uint8_t*)(symval+size-id_size+i) );
82 fprintf(stderr,"\n");
83 fatal("%s: struct %s_device_id is not terminated "
84 "with a NULL entry!\n", modname, device_id);
85 }
86 }
Sam Ravnborgfb33d812006-07-09 16:26:07 +020087}
88
Roman Kaganb19dcd92005-04-22 15:07:01 -070089/* USB is special because the bcdDevice can be matched against a numeric range */
90/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */
91static void do_usb_entry(struct usb_device_id *id,
92 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
93 unsigned char range_lo, unsigned char range_hi,
94 struct module *mod)
Linus Torvalds1da177e2005-04-16 15:20:36 -070095{
Roman Kaganb19dcd92005-04-22 15:07:01 -070096 char alias[500];
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 strcpy(alias, "usb:");
98 ADD(alias, "v", id->match_flags&USB_DEVICE_ID_MATCH_VENDOR,
99 id->idVendor);
100 ADD(alias, "p", id->match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
101 id->idProduct);
Roman Kaganb19dcd92005-04-22 15:07:01 -0700102
103 strcat(alias, "d");
104 if (bcdDevice_initial_digits)
105 sprintf(alias + strlen(alias), "%0*X",
106 bcdDevice_initial_digits, bcdDevice_initial);
107 if (range_lo == range_hi)
108 sprintf(alias + strlen(alias), "%u", range_lo);
109 else if (range_lo > 0 || range_hi < 9)
110 sprintf(alias + strlen(alias), "[%u-%u]", range_lo, range_hi);
111 if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1))
112 strcat(alias, "*");
113
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114 ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
115 id->bDeviceClass);
116 ADD(alias, "dsc",
117 id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
118 id->bDeviceSubClass);
119 ADD(alias, "dp",
120 id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
121 id->bDeviceProtocol);
122 ADD(alias, "ic",
123 id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
124 id->bInterfaceClass);
125 ADD(alias, "isc",
126 id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
127 id->bInterfaceSubClass);
128 ADD(alias, "ip",
129 id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
130 id->bInterfaceProtocol);
Roman Kaganb19dcd92005-04-22 15:07:01 -0700131
132 /* Always end in a wildcard, for future extension */
133 if (alias[strlen(alias)-1] != '*')
134 strcat(alias, "*");
135 buf_printf(&mod->dev_table_buf,
136 "MODULE_ALIAS(\"%s\");\n", alias);
137}
138
139static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod)
140{
141 unsigned int devlo, devhi;
142 unsigned char chi, clo;
143 int ndigits;
144
145 id->match_flags = TO_NATIVE(id->match_flags);
146 id->idVendor = TO_NATIVE(id->idVendor);
147 id->idProduct = TO_NATIVE(id->idProduct);
148
149 devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
150 TO_NATIVE(id->bcdDevice_lo) : 0x0U;
151 devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
152 TO_NATIVE(id->bcdDevice_hi) : ~0x0U;
153
154 /*
155 * Some modules (visor) have empty slots as placeholder for
156 * run-time specification that results in catch-all alias
157 */
Greg Kroah-Hartmande6f92b2008-01-28 09:50:12 -0800158 if (!(id->idVendor | id->idProduct | id->bDeviceClass | id->bInterfaceClass))
Roman Kaganb19dcd92005-04-22 15:07:01 -0700159 return;
160
161 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
162 for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
163 clo = devlo & 0xf;
164 chi = devhi & 0xf;
165 if (chi > 9) /* it's bcd not hex */
166 chi = 9;
167 devlo >>= 4;
168 devhi >>= 4;
169
170 if (devlo == devhi || !ndigits) {
171 do_usb_entry(id, devlo, ndigits, clo, chi, mod);
172 break;
173 }
174
175 if (clo > 0)
176 do_usb_entry(id, devlo++, ndigits, clo, 9, mod);
177
178 if (chi < 9)
179 do_usb_entry(id, devhi--, ndigits, 0, chi, mod);
180 }
181}
182
183static void do_usb_table(void *symval, unsigned long size,
184 struct module *mod)
185{
186 unsigned int i;
187 const unsigned long id_size = sizeof(struct usb_device_id);
188
Kees Cooke0049822007-09-16 11:15:46 +0200189 device_id_check(mod->name, "usb", size, id_size, symval);
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200190
Roman Kaganb19dcd92005-04-22 15:07:01 -0700191 /* Leave last one: it's the terminator. */
192 size -= id_size;
193
194 for (i = 0; i < size; i += id_size)
195 do_usb_entry_multi(symval + i, mod);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196}
197
198/* Looks like: ieee1394:venNmoNspNverN */
199static int do_ieee1394_entry(const char *filename,
200 struct ieee1394_device_id *id, char *alias)
201{
202 id->match_flags = TO_NATIVE(id->match_flags);
203 id->vendor_id = TO_NATIVE(id->vendor_id);
204 id->model_id = TO_NATIVE(id->model_id);
205 id->specifier_id = TO_NATIVE(id->specifier_id);
206 id->version = TO_NATIVE(id->version);
207
208 strcpy(alias, "ieee1394:");
209 ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID,
210 id->vendor_id);
211 ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID,
212 id->model_id);
213 ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID,
214 id->specifier_id);
215 ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION,
216 id->version);
217
218 return 1;
219}
220
221/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
222static int do_pci_entry(const char *filename,
223 struct pci_device_id *id, char *alias)
224{
225 /* Class field can be divided into these three. */
226 unsigned char baseclass, subclass, interface,
227 baseclass_mask, subclass_mask, interface_mask;
228
229 id->vendor = TO_NATIVE(id->vendor);
230 id->device = TO_NATIVE(id->device);
231 id->subvendor = TO_NATIVE(id->subvendor);
232 id->subdevice = TO_NATIVE(id->subdevice);
233 id->class = TO_NATIVE(id->class);
234 id->class_mask = TO_NATIVE(id->class_mask);
235
236 strcpy(alias, "pci:");
237 ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor);
238 ADD(alias, "d", id->device != PCI_ANY_ID, id->device);
239 ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor);
240 ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice);
241
242 baseclass = (id->class) >> 16;
243 baseclass_mask = (id->class_mask) >> 16;
244 subclass = (id->class) >> 8;
245 subclass_mask = (id->class_mask) >> 8;
246 interface = id->class;
247 interface_mask = id->class_mask;
248
249 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
250 || (subclass_mask != 0 && subclass_mask != 0xFF)
251 || (interface_mask != 0 && interface_mask != 0xFF)) {
Sam Ravnborgcb805142006-01-28 16:57:26 +0100252 warn("Can't handle masks in %s:%04X\n",
253 filename, id->class_mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 return 0;
255 }
256
257 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
258 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
259 ADD(alias, "i", interface_mask == 0xFF, interface);
260 return 1;
261}
262
Sam Ravnborg62070fa2006-03-03 16:46:04 +0100263/* looks like: "ccw:tNmNdtNdmN" */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264static int do_ccw_entry(const char *filename,
265 struct ccw_device_id *id, char *alias)
266{
267 id->match_flags = TO_NATIVE(id->match_flags);
268 id->cu_type = TO_NATIVE(id->cu_type);
269 id->cu_model = TO_NATIVE(id->cu_model);
270 id->dev_type = TO_NATIVE(id->dev_type);
271 id->dev_model = TO_NATIVE(id->dev_model);
272
273 strcpy(alias, "ccw:");
274 ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
275 id->cu_type);
276 ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
277 id->cu_model);
278 ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
279 id->dev_type);
Bastian Blankde1d9c02006-03-06 15:43:00 -0800280 ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 id->dev_model);
282 return 1;
283}
284
Martin Schwidefsky1534c382006-09-20 15:58:25 +0200285/* looks like: "ap:tN" */
286static int do_ap_entry(const char *filename,
287 struct ap_device_id *id, char *alias)
288{
289 sprintf(alias, "ap:t%02X", id->dev_type);
290 return 1;
291}
292
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293/* Looks like: "serio:tyNprNidNexN" */
294static int do_serio_entry(const char *filename,
295 struct serio_device_id *id, char *alias)
296{
297 id->type = TO_NATIVE(id->type);
298 id->proto = TO_NATIVE(id->proto);
299 id->id = TO_NATIVE(id->id);
300 id->extra = TO_NATIVE(id->extra);
301
302 strcpy(alias, "serio:");
303 ADD(alias, "ty", id->type != SERIO_ANY, id->type);
304 ADD(alias, "pr", id->proto != SERIO_ANY, id->proto);
305 ADD(alias, "id", id->id != SERIO_ANY, id->id);
306 ADD(alias, "ex", id->extra != SERIO_ANY, id->extra);
307
308 return 1;
309}
310
Thomas Renninger29b71a12007-07-23 14:43:51 +0200311/* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
312static int do_acpi_entry(const char *filename,
313 struct acpi_device_id *id, char *alias)
314{
315 sprintf(alias, "acpi*:%s:", id->id);
316 return 1;
317}
318
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319/* looks like: "pnp:dD" */
320static int do_pnp_entry(const char *filename,
321 struct pnp_device_id *id, char *alias)
322{
323 sprintf(alias, "pnp:d%s", id->id);
324 return 1;
325}
326
327/* looks like: "pnp:cCdD..." */
328static int do_pnp_card_entry(const char *filename,
329 struct pnp_card_device_id *id, char *alias)
330{
331 int i;
332
333 sprintf(alias, "pnp:c%s", id->id);
334 for (i = 0; i < PNP_MAX_DEVICES; i++) {
335 if (! *id->devs[i].id)
336 break;
337 sprintf(alias + strlen(alias), "d%s", id->devs[i].id);
338 }
339 return 1;
340}
341
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700342/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
343static int do_pcmcia_entry(const char *filename,
344 struct pcmcia_device_id *id, char *alias)
345{
346 unsigned int i;
347
Kars de Jong4fb7edc2005-09-25 14:39:46 +0200348 id->match_flags = TO_NATIVE(id->match_flags);
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700349 id->manf_id = TO_NATIVE(id->manf_id);
350 id->card_id = TO_NATIVE(id->card_id);
351 id->func_id = TO_NATIVE(id->func_id);
352 id->function = TO_NATIVE(id->function);
353 id->device_no = TO_NATIVE(id->device_no);
Kars de Jong4fb7edc2005-09-25 14:39:46 +0200354
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700355 for (i=0; i<4; i++) {
356 id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]);
357 }
358
359 strcpy(alias, "pcmcia:");
360 ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
361 id->manf_id);
362 ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
363 id->card_id);
364 ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
365 id->func_id);
366 ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
367 id->function);
368 ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
369 id->device_no);
370 ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]);
371 ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]);
372 ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]);
373 ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]);
374
375 return 1;
376}
377
378
379
Jeff Mahoney5e655772005-07-06 15:44:41 -0400380static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
381{
Sylvain Munautd1ab4232007-05-08 19:59:29 +1000382 int len;
Jeff Mahoney5e655772005-07-06 15:44:41 -0400383 char *tmp;
Sylvain Munautd1ab4232007-05-08 19:59:29 +1000384 len = sprintf (alias, "of:N%sT%s",
Jeff Mahoney5e655772005-07-06 15:44:41 -0400385 of->name[0] ? of->name : "*",
Sylvain Munautd1ab4232007-05-08 19:59:29 +1000386 of->type[0] ? of->type : "*");
387
388 if (of->compatible[0])
389 sprintf (&alias[len], "%sC%s",
390 of->type[0] ? "*" : "",
391 of->compatible);
Jeff Mahoney5e655772005-07-06 15:44:41 -0400392
393 /* Replace all whitespace with underscores */
394 for (tmp = alias; tmp && *tmp; tmp++)
395 if (isspace (*tmp))
396 *tmp = '_';
397
398 return 1;
399}
400
Stephen Rothwellfb120da2005-08-17 16:42:59 +1000401static int do_vio_entry(const char *filename, struct vio_device_id *vio,
402 char *alias)
403{
404 char *tmp;
405
406 sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*",
407 vio->compat[0] ? vio->compat : "*");
408
409 /* Replace all whitespace with underscores */
410 for (tmp = alias; tmp && *tmp; tmp++)
411 if (isspace (*tmp))
412 *tmp = '_';
413
414 return 1;
415}
416
Rusty Russell1d8f4302005-12-07 21:40:34 +0100417#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
418
419static void do_input(char *alias,
420 kernel_ulong_t *arr, unsigned int min, unsigned int max)
421{
422 unsigned int i;
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400423
424 for (i = min; i < max; i++)
Hans de Goedee0e92632006-08-15 12:09:27 +0200425 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400426 sprintf(alias + strlen(alias), "%X,*", i);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100427}
428
429/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
430static int do_input_entry(const char *filename, struct input_device_id *id,
431 char *alias)
432{
433 sprintf(alias, "input:");
434
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400435 ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype);
436 ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor);
437 ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product);
438 ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100439
440 sprintf(alias + strlen(alias), "-e*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400441 if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100442 do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100443 sprintf(alias + strlen(alias), "k*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400444 if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100445 do_input(alias, id->keybit,
446 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
447 INPUT_DEVICE_ID_KEY_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100448 sprintf(alias + strlen(alias), "r*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400449 if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100450 do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100451 sprintf(alias + strlen(alias), "a*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400452 if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100453 do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100454 sprintf(alias + strlen(alias), "m*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400455 if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100456 do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100457 sprintf(alias + strlen(alias), "l*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400458 if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100459 do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100460 sprintf(alias + strlen(alias), "s*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400461 if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100462 do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100463 sprintf(alias + strlen(alias), "f*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400464 if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100465 do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100466 sprintf(alias + strlen(alias), "w*");
Dmitry Torokhovddc5d342006-04-26 00:14:19 -0400467 if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT)
Sam Ravnborgdc24f0e2007-03-09 19:59:06 +0100468 do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100469 return 1;
470}
471
Michael Tokarev07563c72006-09-27 01:50:56 -0700472static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
473 char *alias)
474{
475 if (eisa->sig[0])
476 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig);
477 return 1;
478}
479
Kyle McMartinf3cf2672007-01-13 14:58:21 -0500480/* Looks like: parisc:tNhvNrevNsvN */
481static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
482 char *alias)
483{
484 id->hw_type = TO_NATIVE(id->hw_type);
485 id->hversion = TO_NATIVE(id->hversion);
486 id->hversion_rev = TO_NATIVE(id->hversion_rev);
487 id->sversion = TO_NATIVE(id->sversion);
488
489 strcpy(alias, "parisc:");
Kyle McMartinf354ef82007-01-13 15:02:09 -0500490 ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type);
491 ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion);
492 ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev);
493 ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion);
Kyle McMartinf3cf2672007-01-13 14:58:21 -0500494
495 return 1;
496}
497
Pierre Ossmand59b66c2007-06-17 11:34:23 +0200498/* Looks like: sdio:cNvNdN. */
499static int do_sdio_entry(const char *filename,
500 struct sdio_device_id *id, char *alias)
501{
502 id->class = TO_NATIVE(id->class);
503 id->vendor = TO_NATIVE(id->vendor);
504 id->device = TO_NATIVE(id->device);
505
506 strcpy(alias, "sdio:");
507 ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class);
508 ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor);
509 ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device);
Linus Torvalds038a5002007-10-11 19:40:14 -0700510 return 1;
511}
Pierre Ossmand59b66c2007-06-17 11:34:23 +0200512
Michael Buesch61e115a2007-09-18 15:12:50 -0400513/* Looks like: ssb:vNidNrevN. */
514static int do_ssb_entry(const char *filename,
515 struct ssb_device_id *id, char *alias)
516{
517 id->vendor = TO_NATIVE(id->vendor);
518 id->coreid = TO_NATIVE(id->coreid);
519 id->revision = TO_NATIVE(id->revision);
520
521 strcpy(alias, "ssb:");
522 ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor);
523 ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid);
524 ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision);
Pierre Ossmand59b66c2007-06-17 11:34:23 +0200525 return 1;
526}
527
Rusty Russellb01d9f22007-10-22 11:03:39 +1000528/* Looks like: virtio:dNvN */
529static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
530 char *alias)
531{
532 id->device = TO_NATIVE(id->device);
533 id->vendor = TO_NATIVE(id->vendor);
534
535 strcpy(alias, "virtio:");
536 ADD(alias, "d", 1, id->device);
537 ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor);
538
539 return 1;
540}
541
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542/* Ignore any prefix, eg. v850 prepends _ */
543static inline int sym_is(const char *symbol, const char *name)
544{
545 const char *match;
546
547 match = strstr(symbol, name);
548 if (!match)
549 return 0;
550 return match[strlen(symbol)] == '\0';
551}
552
553static void do_table(void *symval, unsigned long size,
554 unsigned long id_size,
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200555 const char *device_id,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 void *function,
557 struct module *mod)
558{
559 unsigned int i;
560 char alias[500];
561 int (*do_entry)(const char *, void *entry, char *alias) = function;
562
Kees Cooke0049822007-09-16 11:15:46 +0200563 device_id_check(mod->name, device_id, size, id_size, symval);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 /* Leave last one: it's the terminator. */
565 size -= id_size;
566
567 for (i = 0; i < size; i += id_size) {
568 if (do_entry(mod->name, symval+i, alias)) {
569 /* Always end in a wildcard, for future extension */
570 if (alias[strlen(alias)-1] != '*')
571 strcat(alias, "*");
572 buf_printf(&mod->dev_table_buf,
573 "MODULE_ALIAS(\"%s\");\n", alias);
574 }
575 }
576}
577
578/* Create MODULE_ALIAS() statements.
579 * At this time, we cannot write the actual output C source yet,
580 * so we write into the mod->dev_table_buf buffer. */
581void handle_moddevtable(struct module *mod, struct elf_info *info,
582 Elf_Sym *sym, const char *symname)
583{
584 void *symval;
Kees Cooke0049822007-09-16 11:15:46 +0200585 char *zeros = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586
587 /* We're looking for a section relative symbol */
588 if (!sym->st_shndx || sym->st_shndx >= info->hdr->e_shnum)
589 return;
590
Kees Cooke0049822007-09-16 11:15:46 +0200591 /* Handle all-NULL symbols allocated into .bss */
592 if (info->sechdrs[sym->st_shndx].sh_type & SHT_NOBITS) {
593 zeros = calloc(1, sym->st_size);
594 symval = zeros;
595 } else {
596 symval = (void *)info->hdr
597 + info->sechdrs[sym->st_shndx].sh_offset
598 + sym->st_value;
599 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600
601 if (sym_is(symname, "__mod_pci_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200602 do_table(symval, sym->st_size,
603 sizeof(struct pci_device_id), "pci",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604 do_pci_entry, mod);
605 else if (sym_is(symname, "__mod_usb_device_table"))
Roman Kaganb19dcd92005-04-22 15:07:01 -0700606 /* special case to handle bcdDevice ranges */
607 do_usb_table(symval, sym->st_size, mod);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700608 else if (sym_is(symname, "__mod_ieee1394_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200609 do_table(symval, sym->st_size,
610 sizeof(struct ieee1394_device_id), "ieee1394",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611 do_ieee1394_entry, mod);
612 else if (sym_is(symname, "__mod_ccw_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200613 do_table(symval, sym->st_size,
614 sizeof(struct ccw_device_id), "ccw",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 do_ccw_entry, mod);
Martin Schwidefsky1534c382006-09-20 15:58:25 +0200616 else if (sym_is(symname, "__mod_ap_device_table"))
617 do_table(symval, sym->st_size,
618 sizeof(struct ap_device_id), "ap",
619 do_ap_entry, mod);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620 else if (sym_is(symname, "__mod_serio_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200621 do_table(symval, sym->st_size,
622 sizeof(struct serio_device_id), "serio",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 do_serio_entry, mod);
Thomas Renninger29b71a12007-07-23 14:43:51 +0200624 else if (sym_is(symname, "__mod_acpi_device_table"))
625 do_table(symval, sym->st_size,
626 sizeof(struct acpi_device_id), "acpi",
627 do_acpi_entry, mod);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628 else if (sym_is(symname, "__mod_pnp_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200629 do_table(symval, sym->st_size,
630 sizeof(struct pnp_device_id), "pnp",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631 do_pnp_entry, mod);
632 else if (sym_is(symname, "__mod_pnp_card_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200633 do_table(symval, sym->st_size,
634 sizeof(struct pnp_card_device_id), "pnp_card",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635 do_pnp_card_entry, mod);
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700636 else if (sym_is(symname, "__mod_pcmcia_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200637 do_table(symval, sym->st_size,
638 sizeof(struct pcmcia_device_id), "pcmcia",
Dominik Brodowski90829cf2005-06-27 16:28:12 -0700639 do_pcmcia_entry, mod);
Jeff Mahoney5e655772005-07-06 15:44:41 -0400640 else if (sym_is(symname, "__mod_of_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200641 do_table(symval, sym->st_size,
642 sizeof(struct of_device_id), "of",
Jeff Mahoney5e655772005-07-06 15:44:41 -0400643 do_of_entry, mod);
Stephen Rothwellfb120da2005-08-17 16:42:59 +1000644 else if (sym_is(symname, "__mod_vio_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200645 do_table(symval, sym->st_size,
646 sizeof(struct vio_device_id), "vio",
Stephen Rothwellfb120da2005-08-17 16:42:59 +1000647 do_vio_entry, mod);
Rusty Russell1d8f4302005-12-07 21:40:34 +0100648 else if (sym_is(symname, "__mod_input_device_table"))
Sam Ravnborgfb33d812006-07-09 16:26:07 +0200649 do_table(symval, sym->st_size,
650 sizeof(struct input_device_id), "input",
Rusty Russell1d8f4302005-12-07 21:40:34 +0100651 do_input_entry, mod);
Michael Tokarev07563c72006-09-27 01:50:56 -0700652 else if (sym_is(symname, "__mod_eisa_device_table"))
653 do_table(symval, sym->st_size,
654 sizeof(struct eisa_device_id), "eisa",
655 do_eisa_entry, mod);
Kyle McMartinf3cf2672007-01-13 14:58:21 -0500656 else if (sym_is(symname, "__mod_parisc_device_table"))
657 do_table(symval, sym->st_size,
658 sizeof(struct parisc_device_id), "parisc",
659 do_parisc_entry, mod);
Pierre Ossmand59b66c2007-06-17 11:34:23 +0200660 else if (sym_is(symname, "__mod_sdio_device_table"))
661 do_table(symval, sym->st_size,
662 sizeof(struct sdio_device_id), "sdio",
663 do_sdio_entry, mod);
Michael Buesch61e115a2007-09-18 15:12:50 -0400664 else if (sym_is(symname, "__mod_ssb_device_table"))
665 do_table(symval, sym->st_size,
666 sizeof(struct ssb_device_id), "ssb",
667 do_ssb_entry, mod);
Rusty Russellb01d9f22007-10-22 11:03:39 +1000668 else if (sym_is(symname, "__mod_virtio_device_table"))
669 do_table(symval, sym->st_size,
670 sizeof(struct virtio_device_id), "virtio",
671 do_virtio_entry, mod);
Kees Cooke0049822007-09-16 11:15:46 +0200672 free(zeros);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673}
674
675/* Now add out buffered information to the generated C source */
676void add_moddevtable(struct buffer *buf, struct module *mod)
677{
678 buf_printf(buf, "\n");
679 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
680 free(mod->dev_table_buf.p);
681}