Loading...
1/* Simple code to turn various tables in an ELF file into alias definitions.
2 * This deals with kernel datastructures where they should be
3 * dealt with: in the kernel source.
4 *
5 * Copyright 2002-2003 Rusty Russell, IBM Corporation
6 * 2003 Kai Germaschewski
7 *
8 *
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
11 */
12
13#include "modpost.h"
14
15/* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
16 * use either stdint.h or inttypes.h for the rest. */
17#if KERNEL_ELFCLASS == ELFCLASS32
18typedef Elf32_Addr kernel_ulong_t;
19#define BITS_PER_LONG 32
20#else
21typedef Elf64_Addr kernel_ulong_t;
22#define BITS_PER_LONG 64
23#endif
24#ifdef __sun__
25#include <inttypes.h>
26#else
27#include <stdint.h>
28#endif
29
30#include <ctype.h>
31#include <stdbool.h>
32
33typedef uint32_t __u32;
34typedef uint16_t __u16;
35typedef unsigned char __u8;
36
37/* Big exception to the "don't include kernel headers into userspace, which
38 * even potentially has different endianness and word sizes, since
39 * we handle those differences explicitly below */
40#include "../../include/linux/mod_devicetable.h"
41
42/* This array collects all instances that use the generic do_table */
43struct devtable {
44 const char *device_id; /* name of table, __mod_<name>_device_table. */
45 unsigned long id_size;
46 void *function;
47};
48
49#define ___cat(a,b) a ## b
50#define __cat(a,b) ___cat(a,b)
51
52/* we need some special handling for this host tool running eventually on
53 * Darwin. The Mach-O section handling is a bit different than ELF section
54 * handling. The differnces in detail are:
55 * a) we have segments which have sections
56 * b) we need a API call to get the respective section symbols */
57#if defined(__MACH__)
58#include <mach-o/getsect.h>
59
60#define INIT_SECTION(name) do { \
61 unsigned long name ## _len; \
62 char *__cat(pstart_,name) = getsectdata("__TEXT", \
63 #name, &__cat(name,_len)); \
64 char *__cat(pstop_,name) = __cat(pstart_,name) + \
65 __cat(name, _len); \
66 __cat(__start_,name) = (void *)__cat(pstart_,name); \
67 __cat(__stop_,name) = (void *)__cat(pstop_,name); \
68 } while (0)
69#define SECTION(name) __attribute__((section("__TEXT, " #name)))
70
71struct devtable **__start___devtable, **__stop___devtable;
72#else
73#define INIT_SECTION(name) /* no-op for ELF */
74#define SECTION(name) __attribute__((section(#name)))
75
76/* We construct a table of pointers in an ELF section (pointers generally
77 * go unpadded by gcc). ld creates boundary syms for us. */
78extern struct devtable *__start___devtable[], *__stop___devtable[];
79#endif /* __MACH__ */
80
81#if __GNUC__ == 3 && __GNUC_MINOR__ < 3
82# define __used __attribute__((__unused__))
83#else
84# define __used __attribute__((__used__))
85#endif
86
87/* Add a table entry. We test function type matches while we're here. */
88#define ADD_TO_DEVTABLE(device_id, type, function) \
89 static struct devtable __cat(devtable,__LINE__) = { \
90 device_id + 0*sizeof((function)((const char *)NULL, \
91 (type *)NULL, \
92 (char *)NULL)), \
93 sizeof(type), (function) }; \
94 static struct devtable *SECTION(__devtable) __used \
95 __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__)
96
97#define ADD(str, sep, cond, field) \
98do { \
99 strcat(str, sep); \
100 if (cond) \
101 sprintf(str + strlen(str), \
102 sizeof(field) == 1 ? "%02X" : \
103 sizeof(field) == 2 ? "%04X" : \
104 sizeof(field) == 4 ? "%08X" : "", \
105 field); \
106 else \
107 sprintf(str + strlen(str), "*"); \
108} while(0)
109
110/* Always end in a wildcard, for future extension */
111static inline void add_wildcard(char *str)
112{
113 int len = strlen(str);
114
115 if (str[len - 1] != '*')
116 strcat(str + len, "*");
117}
118
119unsigned int cross_build = 0;
120/**
121 * Check that sizeof(device_id type) are consistent with size of section
122 * in .o file. If in-consistent then userspace and kernel does not agree
123 * on actual size which is a bug.
124 * Also verify that the final entry in the table is all zeros.
125 * Ignore both checks if build host differ from target host and size differs.
126 **/
127static void device_id_check(const char *modname, const char *device_id,
128 unsigned long size, unsigned long id_size,
129 void *symval)
130{
131 int i;
132
133 if (size % id_size || size < id_size) {
134 if (cross_build != 0)
135 return;
136 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
137 "of the size of section __mod_%s_device_table=%lu.\n"
138 "Fix definition of struct %s_device_id "
139 "in mod_devicetable.h\n",
140 modname, device_id, id_size, device_id, size, device_id);
141 }
142 /* Verify last one is a terminator */
143 for (i = 0; i < id_size; i++ ) {
144 if (*(uint8_t*)(symval+size-id_size+i)) {
145 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
146 "The last of %lu is:\n",
147 modname, device_id, id_size, size / id_size);
148 for (i = 0; i < id_size; i++ )
149 fprintf(stderr,"0x%02x ",
150 *(uint8_t*)(symval+size-id_size+i) );
151 fprintf(stderr,"\n");
152 fatal("%s: struct %s_device_id is not terminated "
153 "with a NULL entry!\n", modname, device_id);
154 }
155 }
156}
157
158/* USB is special because the bcdDevice can be matched against a numeric range */
159/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */
160static void do_usb_entry(struct usb_device_id *id,
161 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
162 unsigned char range_lo, unsigned char range_hi,
163 unsigned char max, struct module *mod)
164{
165 char alias[500];
166 strcpy(alias, "usb:");
167 ADD(alias, "v", id->match_flags&USB_DEVICE_ID_MATCH_VENDOR,
168 id->idVendor);
169 ADD(alias, "p", id->match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
170 id->idProduct);
171
172 strcat(alias, "d");
173 if (bcdDevice_initial_digits)
174 sprintf(alias + strlen(alias), "%0*X",
175 bcdDevice_initial_digits, bcdDevice_initial);
176 if (range_lo == range_hi)
177 sprintf(alias + strlen(alias), "%X", range_lo);
178 else if (range_lo > 0 || range_hi < max) {
179 if (range_lo > 0x9 || range_hi < 0xA)
180 sprintf(alias + strlen(alias),
181 "[%X-%X]",
182 range_lo,
183 range_hi);
184 else {
185 sprintf(alias + strlen(alias),
186 range_lo < 0x9 ? "[%X-9" : "[%X",
187 range_lo);
188 sprintf(alias + strlen(alias),
189 range_hi > 0xA ? "a-%X]" : "%X]",
190 range_lo);
191 }
192 }
193 if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1))
194 strcat(alias, "*");
195
196 ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
197 id->bDeviceClass);
198 ADD(alias, "dsc",
199 id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
200 id->bDeviceSubClass);
201 ADD(alias, "dp",
202 id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
203 id->bDeviceProtocol);
204 ADD(alias, "ic",
205 id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
206 id->bInterfaceClass);
207 ADD(alias, "isc",
208 id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
209 id->bInterfaceSubClass);
210 ADD(alias, "ip",
211 id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
212 id->bInterfaceProtocol);
213
214 add_wildcard(alias);
215 buf_printf(&mod->dev_table_buf,
216 "MODULE_ALIAS(\"%s\");\n", alias);
217}
218
219/* Handles increment/decrement of BCD formatted integers */
220/* Returns the previous value, so it works like i++ or i-- */
221static unsigned int incbcd(unsigned int *bcd,
222 int inc,
223 unsigned char max,
224 size_t chars)
225{
226 unsigned int init = *bcd, i, j;
227 unsigned long long c, dec = 0;
228
229 /* If bcd is not in BCD format, just increment */
230 if (max > 0x9) {
231 *bcd += inc;
232 return init;
233 }
234
235 /* Convert BCD to Decimal */
236 for (i=0 ; i < chars ; i++) {
237 c = (*bcd >> (i << 2)) & 0xf;
238 c = c > 9 ? 9 : c; /* force to bcd just in case */
239 for (j=0 ; j < i ; j++)
240 c = c * 10;
241 dec += c;
242 }
243
244 /* Do our increment/decrement */
245 dec += inc;
246 *bcd = 0;
247
248 /* Convert back to BCD */
249 for (i=0 ; i < chars ; i++) {
250 for (c=1,j=0 ; j < i ; j++)
251 c = c * 10;
252 c = (dec / c) % 10;
253 *bcd += c << (i << 2);
254 }
255 return init;
256}
257
258static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod)
259{
260 unsigned int devlo, devhi;
261 unsigned char chi, clo, max;
262 int ndigits;
263
264 id->match_flags = TO_NATIVE(id->match_flags);
265 id->idVendor = TO_NATIVE(id->idVendor);
266 id->idProduct = TO_NATIVE(id->idProduct);
267
268 devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
269 TO_NATIVE(id->bcdDevice_lo) : 0x0U;
270 devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
271 TO_NATIVE(id->bcdDevice_hi) : ~0x0U;
272
273 /* Figure out if this entry is in bcd or hex format */
274 max = 0x9; /* Default to decimal format */
275 for (ndigits = 0 ; ndigits < sizeof(id->bcdDevice_lo) * 2 ; ndigits++) {
276 clo = (devlo >> (ndigits << 2)) & 0xf;
277 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
278 if (clo > max || chi > max) {
279 max = 0xf;
280 break;
281 }
282 }
283
284 /*
285 * Some modules (visor) have empty slots as placeholder for
286 * run-time specification that results in catch-all alias
287 */
288 if (!(id->idVendor | id->idProduct | id->bDeviceClass | id->bInterfaceClass))
289 return;
290
291 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
292 for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
293 clo = devlo & 0xf;
294 chi = devhi & 0xf;
295 if (chi > max) /* If we are in bcd mode, truncate if necessary */
296 chi = max;
297 devlo >>= 4;
298 devhi >>= 4;
299
300 if (devlo == devhi || !ndigits) {
301 do_usb_entry(id, devlo, ndigits, clo, chi, max, mod);
302 break;
303 }
304
305 if (clo > 0x0)
306 do_usb_entry(id,
307 incbcd(&devlo, 1, max,
308 sizeof(id->bcdDevice_lo) * 2),
309 ndigits, clo, max, max, mod);
310
311 if (chi < max)
312 do_usb_entry(id,
313 incbcd(&devhi, -1, max,
314 sizeof(id->bcdDevice_lo) * 2),
315 ndigits, 0x0, chi, max, mod);
316 }
317}
318
319static void do_usb_table(void *symval, unsigned long size,
320 struct module *mod)
321{
322 unsigned int i;
323 const unsigned long id_size = sizeof(struct usb_device_id);
324
325 device_id_check(mod->name, "usb", size, id_size, symval);
326
327 /* Leave last one: it's the terminator. */
328 size -= id_size;
329
330 for (i = 0; i < size; i += id_size)
331 do_usb_entry_multi(symval + i, mod);
332}
333
334/* Looks like: hid:bNvNpN */
335static int do_hid_entry(const char *filename,
336 struct hid_device_id *id, char *alias)
337{
338 id->bus = TO_NATIVE(id->bus);
339 id->group = TO_NATIVE(id->group);
340 id->vendor = TO_NATIVE(id->vendor);
341 id->product = TO_NATIVE(id->product);
342
343 sprintf(alias, "hid:");
344 ADD(alias, "b", id->bus != HID_BUS_ANY, id->bus);
345 ADD(alias, "g", id->group != HID_GROUP_ANY, id->group);
346 ADD(alias, "v", id->vendor != HID_ANY_ID, id->vendor);
347 ADD(alias, "p", id->product != HID_ANY_ID, id->product);
348
349 return 1;
350}
351ADD_TO_DEVTABLE("hid", struct hid_device_id, do_hid_entry);
352
353/* Looks like: ieee1394:venNmoNspNverN */
354static int do_ieee1394_entry(const char *filename,
355 struct ieee1394_device_id *id, char *alias)
356{
357 id->match_flags = TO_NATIVE(id->match_flags);
358 id->vendor_id = TO_NATIVE(id->vendor_id);
359 id->model_id = TO_NATIVE(id->model_id);
360 id->specifier_id = TO_NATIVE(id->specifier_id);
361 id->version = TO_NATIVE(id->version);
362
363 strcpy(alias, "ieee1394:");
364 ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID,
365 id->vendor_id);
366 ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID,
367 id->model_id);
368 ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID,
369 id->specifier_id);
370 ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION,
371 id->version);
372
373 add_wildcard(alias);
374 return 1;
375}
376ADD_TO_DEVTABLE("ieee1394", struct ieee1394_device_id, do_ieee1394_entry);
377
378/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
379static int do_pci_entry(const char *filename,
380 struct pci_device_id *id, char *alias)
381{
382 /* Class field can be divided into these three. */
383 unsigned char baseclass, subclass, interface,
384 baseclass_mask, subclass_mask, interface_mask;
385
386 id->vendor = TO_NATIVE(id->vendor);
387 id->device = TO_NATIVE(id->device);
388 id->subvendor = TO_NATIVE(id->subvendor);
389 id->subdevice = TO_NATIVE(id->subdevice);
390 id->class = TO_NATIVE(id->class);
391 id->class_mask = TO_NATIVE(id->class_mask);
392
393 strcpy(alias, "pci:");
394 ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor);
395 ADD(alias, "d", id->device != PCI_ANY_ID, id->device);
396 ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor);
397 ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice);
398
399 baseclass = (id->class) >> 16;
400 baseclass_mask = (id->class_mask) >> 16;
401 subclass = (id->class) >> 8;
402 subclass_mask = (id->class_mask) >> 8;
403 interface = id->class;
404 interface_mask = id->class_mask;
405
406 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
407 || (subclass_mask != 0 && subclass_mask != 0xFF)
408 || (interface_mask != 0 && interface_mask != 0xFF)) {
409 warn("Can't handle masks in %s:%04X\n",
410 filename, id->class_mask);
411 return 0;
412 }
413
414 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
415 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
416 ADD(alias, "i", interface_mask == 0xFF, interface);
417 add_wildcard(alias);
418 return 1;
419}
420ADD_TO_DEVTABLE("pci", struct pci_device_id, do_pci_entry);
421
422/* looks like: "ccw:tNmNdtNdmN" */
423static int do_ccw_entry(const char *filename,
424 struct ccw_device_id *id, char *alias)
425{
426 id->match_flags = TO_NATIVE(id->match_flags);
427 id->cu_type = TO_NATIVE(id->cu_type);
428 id->cu_model = TO_NATIVE(id->cu_model);
429 id->dev_type = TO_NATIVE(id->dev_type);
430 id->dev_model = TO_NATIVE(id->dev_model);
431
432 strcpy(alias, "ccw:");
433 ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
434 id->cu_type);
435 ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
436 id->cu_model);
437 ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
438 id->dev_type);
439 ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
440 id->dev_model);
441 add_wildcard(alias);
442 return 1;
443}
444ADD_TO_DEVTABLE("ccw", struct ccw_device_id, do_ccw_entry);
445
446/* looks like: "ap:tN" */
447static int do_ap_entry(const char *filename,
448 struct ap_device_id *id, char *alias)
449{
450 sprintf(alias, "ap:t%02X*", id->dev_type);
451 return 1;
452}
453ADD_TO_DEVTABLE("ap", struct ap_device_id, do_ap_entry);
454
455/* looks like: "css:tN" */
456static int do_css_entry(const char *filename,
457 struct css_device_id *id, char *alias)
458{
459 sprintf(alias, "css:t%01X", id->type);
460 return 1;
461}
462ADD_TO_DEVTABLE("css", struct css_device_id, do_css_entry);
463
464/* Looks like: "serio:tyNprNidNexN" */
465static int do_serio_entry(const char *filename,
466 struct serio_device_id *id, char *alias)
467{
468 id->type = TO_NATIVE(id->type);
469 id->proto = TO_NATIVE(id->proto);
470 id->id = TO_NATIVE(id->id);
471 id->extra = TO_NATIVE(id->extra);
472
473 strcpy(alias, "serio:");
474 ADD(alias, "ty", id->type != SERIO_ANY, id->type);
475 ADD(alias, "pr", id->proto != SERIO_ANY, id->proto);
476 ADD(alias, "id", id->id != SERIO_ANY, id->id);
477 ADD(alias, "ex", id->extra != SERIO_ANY, id->extra);
478
479 add_wildcard(alias);
480 return 1;
481}
482ADD_TO_DEVTABLE("serio", struct serio_device_id, do_serio_entry);
483
484/* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
485static int do_acpi_entry(const char *filename,
486 struct acpi_device_id *id, char *alias)
487{
488 sprintf(alias, "acpi*:%s:*", id->id);
489 return 1;
490}
491ADD_TO_DEVTABLE("acpi", struct acpi_device_id, do_acpi_entry);
492
493/* looks like: "pnp:dD" */
494static void do_pnp_device_entry(void *symval, unsigned long size,
495 struct module *mod)
496{
497 const unsigned long id_size = sizeof(struct pnp_device_id);
498 const unsigned int count = (size / id_size)-1;
499 const struct pnp_device_id *devs = symval;
500 unsigned int i;
501
502 device_id_check(mod->name, "pnp", size, id_size, symval);
503
504 for (i = 0; i < count; i++) {
505 const char *id = (char *)devs[i].id;
506 char acpi_id[sizeof(devs[0].id)];
507 int j;
508
509 buf_printf(&mod->dev_table_buf,
510 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
511
512 /* fix broken pnp bus lowercasing */
513 for (j = 0; j < sizeof(acpi_id); j++)
514 acpi_id[j] = toupper(id[j]);
515 buf_printf(&mod->dev_table_buf,
516 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
517 }
518}
519
520/* looks like: "pnp:dD" for every device of the card */
521static void do_pnp_card_entries(void *symval, unsigned long size,
522 struct module *mod)
523{
524 const unsigned long id_size = sizeof(struct pnp_card_device_id);
525 const unsigned int count = (size / id_size)-1;
526 const struct pnp_card_device_id *cards = symval;
527 unsigned int i;
528
529 device_id_check(mod->name, "pnp", size, id_size, symval);
530
531 for (i = 0; i < count; i++) {
532 unsigned int j;
533 const struct pnp_card_device_id *card = &cards[i];
534
535 for (j = 0; j < PNP_MAX_DEVICES; j++) {
536 const char *id = (char *)card->devs[j].id;
537 int i2, j2;
538 int dup = 0;
539
540 if (!id[0])
541 break;
542
543 /* find duplicate, already added value */
544 for (i2 = 0; i2 < i && !dup; i2++) {
545 const struct pnp_card_device_id *card2 = &cards[i2];
546
547 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
548 const char *id2 = (char *)card2->devs[j2].id;
549
550 if (!id2[0])
551 break;
552
553 if (!strcmp(id, id2)) {
554 dup = 1;
555 break;
556 }
557 }
558 }
559
560 /* add an individual alias for every device entry */
561 if (!dup) {
562 char acpi_id[sizeof(card->devs[0].id)];
563 int k;
564
565 buf_printf(&mod->dev_table_buf,
566 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
567
568 /* fix broken pnp bus lowercasing */
569 for (k = 0; k < sizeof(acpi_id); k++)
570 acpi_id[k] = toupper(id[k]);
571 buf_printf(&mod->dev_table_buf,
572 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
573 }
574 }
575 }
576}
577
578/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
579static int do_pcmcia_entry(const char *filename,
580 struct pcmcia_device_id *id, char *alias)
581{
582 unsigned int i;
583
584 id->match_flags = TO_NATIVE(id->match_flags);
585 id->manf_id = TO_NATIVE(id->manf_id);
586 id->card_id = TO_NATIVE(id->card_id);
587 id->func_id = TO_NATIVE(id->func_id);
588 id->function = TO_NATIVE(id->function);
589 id->device_no = TO_NATIVE(id->device_no);
590
591 for (i=0; i<4; i++) {
592 id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]);
593 }
594
595 strcpy(alias, "pcmcia:");
596 ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
597 id->manf_id);
598 ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
599 id->card_id);
600 ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
601 id->func_id);
602 ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
603 id->function);
604 ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
605 id->device_no);
606 ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]);
607 ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]);
608 ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]);
609 ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]);
610
611 add_wildcard(alias);
612 return 1;
613}
614ADD_TO_DEVTABLE("pcmcia", struct pcmcia_device_id, do_pcmcia_entry);
615
616static int do_of_entry (const char *filename, struct of_device_id *of, char *alias)
617{
618 int len;
619 char *tmp;
620 len = sprintf (alias, "of:N%sT%s",
621 of->name[0] ? of->name : "*",
622 of->type[0] ? of->type : "*");
623
624 if (of->compatible[0])
625 sprintf (&alias[len], "%sC%s",
626 of->type[0] ? "*" : "",
627 of->compatible);
628
629 /* Replace all whitespace with underscores */
630 for (tmp = alias; tmp && *tmp; tmp++)
631 if (isspace (*tmp))
632 *tmp = '_';
633
634 add_wildcard(alias);
635 return 1;
636}
637ADD_TO_DEVTABLE("of", struct of_device_id, do_of_entry);
638
639static int do_vio_entry(const char *filename, struct vio_device_id *vio,
640 char *alias)
641{
642 char *tmp;
643
644 sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*",
645 vio->compat[0] ? vio->compat : "*");
646
647 /* Replace all whitespace with underscores */
648 for (tmp = alias; tmp && *tmp; tmp++)
649 if (isspace (*tmp))
650 *tmp = '_';
651
652 add_wildcard(alias);
653 return 1;
654}
655ADD_TO_DEVTABLE("vio", struct vio_device_id, do_vio_entry);
656
657#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
658
659static void do_input(char *alias,
660 kernel_ulong_t *arr, unsigned int min, unsigned int max)
661{
662 unsigned int i;
663
664 for (i = min; i < max; i++)
665 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
666 sprintf(alias + strlen(alias), "%X,*", i);
667}
668
669/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
670static int do_input_entry(const char *filename, struct input_device_id *id,
671 char *alias)
672{
673 sprintf(alias, "input:");
674
675 ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype);
676 ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor);
677 ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product);
678 ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version);
679
680 sprintf(alias + strlen(alias), "-e*");
681 if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT)
682 do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX);
683 sprintf(alias + strlen(alias), "k*");
684 if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
685 do_input(alias, id->keybit,
686 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
687 INPUT_DEVICE_ID_KEY_MAX);
688 sprintf(alias + strlen(alias), "r*");
689 if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT)
690 do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX);
691 sprintf(alias + strlen(alias), "a*");
692 if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
693 do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
694 sprintf(alias + strlen(alias), "m*");
695 if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT)
696 do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
697 sprintf(alias + strlen(alias), "l*");
698 if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
699 do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
700 sprintf(alias + strlen(alias), "s*");
701 if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
702 do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
703 sprintf(alias + strlen(alias), "f*");
704 if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT)
705 do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
706 sprintf(alias + strlen(alias), "w*");
707 if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT)
708 do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX);
709 return 1;
710}
711ADD_TO_DEVTABLE("input", struct input_device_id, do_input_entry);
712
713static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa,
714 char *alias)
715{
716 if (eisa->sig[0])
717 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig);
718 else
719 strcat(alias, "*");
720 return 1;
721}
722ADD_TO_DEVTABLE("eisa", struct eisa_device_id, do_eisa_entry);
723
724/* Looks like: parisc:tNhvNrevNsvN */
725static int do_parisc_entry(const char *filename, struct parisc_device_id *id,
726 char *alias)
727{
728 id->hw_type = TO_NATIVE(id->hw_type);
729 id->hversion = TO_NATIVE(id->hversion);
730 id->hversion_rev = TO_NATIVE(id->hversion_rev);
731 id->sversion = TO_NATIVE(id->sversion);
732
733 strcpy(alias, "parisc:");
734 ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type);
735 ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion);
736 ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev);
737 ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion);
738
739 add_wildcard(alias);
740 return 1;
741}
742ADD_TO_DEVTABLE("parisc", struct parisc_device_id, do_parisc_entry);
743
744/* Looks like: sdio:cNvNdN. */
745static int do_sdio_entry(const char *filename,
746 struct sdio_device_id *id, char *alias)
747{
748 id->class = TO_NATIVE(id->class);
749 id->vendor = TO_NATIVE(id->vendor);
750 id->device = TO_NATIVE(id->device);
751
752 strcpy(alias, "sdio:");
753 ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class);
754 ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor);
755 ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device);
756 add_wildcard(alias);
757 return 1;
758}
759ADD_TO_DEVTABLE("sdio", struct sdio_device_id, do_sdio_entry);
760
761/* Looks like: ssb:vNidNrevN. */
762static int do_ssb_entry(const char *filename,
763 struct ssb_device_id *id, char *alias)
764{
765 id->vendor = TO_NATIVE(id->vendor);
766 id->coreid = TO_NATIVE(id->coreid);
767 id->revision = TO_NATIVE(id->revision);
768
769 strcpy(alias, "ssb:");
770 ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor);
771 ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid);
772 ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision);
773 add_wildcard(alias);
774 return 1;
775}
776ADD_TO_DEVTABLE("ssb", struct ssb_device_id, do_ssb_entry);
777
778/* Looks like: bcma:mNidNrevNclN. */
779static int do_bcma_entry(const char *filename,
780 struct bcma_device_id *id, char *alias)
781{
782 id->manuf = TO_NATIVE(id->manuf);
783 id->id = TO_NATIVE(id->id);
784 id->rev = TO_NATIVE(id->rev);
785 id->class = TO_NATIVE(id->class);
786
787 strcpy(alias, "bcma:");
788 ADD(alias, "m", id->manuf != BCMA_ANY_MANUF, id->manuf);
789 ADD(alias, "id", id->id != BCMA_ANY_ID, id->id);
790 ADD(alias, "rev", id->rev != BCMA_ANY_REV, id->rev);
791 ADD(alias, "cl", id->class != BCMA_ANY_CLASS, id->class);
792 add_wildcard(alias);
793 return 1;
794}
795ADD_TO_DEVTABLE("bcma", struct bcma_device_id, do_bcma_entry);
796
797/* Looks like: virtio:dNvN */
798static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
799 char *alias)
800{
801 id->device = TO_NATIVE(id->device);
802 id->vendor = TO_NATIVE(id->vendor);
803
804 strcpy(alias, "virtio:");
805 ADD(alias, "d", id->device != VIRTIO_DEV_ANY_ID, id->device);
806 ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor);
807
808 add_wildcard(alias);
809 return 1;
810}
811ADD_TO_DEVTABLE("virtio", struct virtio_device_id, do_virtio_entry);
812
813/*
814 * Looks like: vmbus:guid
815 * Each byte of the guid will be represented by two hex characters
816 * in the name.
817 */
818
819static int do_vmbus_entry(const char *filename, struct hv_vmbus_device_id *id,
820 char *alias)
821{
822 int i;
823 char guid_name[((sizeof(id->guid) + 1)) * 2];
824
825 for (i = 0; i < (sizeof(id->guid) * 2); i += 2)
826 sprintf(&guid_name[i], "%02x", id->guid[i/2]);
827
828 strcpy(alias, "vmbus:");
829 strcat(alias, guid_name);
830
831 return 1;
832}
833ADD_TO_DEVTABLE("vmbus", struct hv_vmbus_device_id, do_vmbus_entry);
834
835/* Looks like: i2c:S */
836static int do_i2c_entry(const char *filename, struct i2c_device_id *id,
837 char *alias)
838{
839 sprintf(alias, I2C_MODULE_PREFIX "%s", id->name);
840
841 return 1;
842}
843ADD_TO_DEVTABLE("i2c", struct i2c_device_id, do_i2c_entry);
844
845/* Looks like: spi:S */
846static int do_spi_entry(const char *filename, struct spi_device_id *id,
847 char *alias)
848{
849 sprintf(alias, SPI_MODULE_PREFIX "%s", id->name);
850
851 return 1;
852}
853ADD_TO_DEVTABLE("spi", struct spi_device_id, do_spi_entry);
854
855static const struct dmifield {
856 const char *prefix;
857 int field;
858} dmi_fields[] = {
859 { "bvn", DMI_BIOS_VENDOR },
860 { "bvr", DMI_BIOS_VERSION },
861 { "bd", DMI_BIOS_DATE },
862 { "svn", DMI_SYS_VENDOR },
863 { "pn", DMI_PRODUCT_NAME },
864 { "pvr", DMI_PRODUCT_VERSION },
865 { "rvn", DMI_BOARD_VENDOR },
866 { "rn", DMI_BOARD_NAME },
867 { "rvr", DMI_BOARD_VERSION },
868 { "cvn", DMI_CHASSIS_VENDOR },
869 { "ct", DMI_CHASSIS_TYPE },
870 { "cvr", DMI_CHASSIS_VERSION },
871 { NULL, DMI_NONE }
872};
873
874static void dmi_ascii_filter(char *d, const char *s)
875{
876 /* Filter out characters we don't want to see in the modalias string */
877 for (; *s; s++)
878 if (*s > ' ' && *s < 127 && *s != ':')
879 *(d++) = *s;
880
881 *d = 0;
882}
883
884
885static int do_dmi_entry(const char *filename, struct dmi_system_id *id,
886 char *alias)
887{
888 int i, j;
889
890 sprintf(alias, "dmi*");
891
892 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
893 for (j = 0; j < 4; j++) {
894 if (id->matches[j].slot &&
895 id->matches[j].slot == dmi_fields[i].field) {
896 sprintf(alias + strlen(alias), ":%s*",
897 dmi_fields[i].prefix);
898 dmi_ascii_filter(alias + strlen(alias),
899 id->matches[j].substr);
900 strcat(alias, "*");
901 }
902 }
903 }
904
905 strcat(alias, ":");
906 return 1;
907}
908ADD_TO_DEVTABLE("dmi", struct dmi_system_id, do_dmi_entry);
909
910static int do_platform_entry(const char *filename,
911 struct platform_device_id *id, char *alias)
912{
913 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", id->name);
914 return 1;
915}
916ADD_TO_DEVTABLE("platform", struct platform_device_id, do_platform_entry);
917
918static int do_mdio_entry(const char *filename,
919 struct mdio_device_id *id, char *alias)
920{
921 int i;
922
923 alias += sprintf(alias, MDIO_MODULE_PREFIX);
924
925 for (i = 0; i < 32; i++) {
926 if (!((id->phy_id_mask >> (31-i)) & 1))
927 *(alias++) = '?';
928 else if ((id->phy_id >> (31-i)) & 1)
929 *(alias++) = '1';
930 else
931 *(alias++) = '0';
932 }
933
934 /* Terminate the string */
935 *alias = 0;
936
937 return 1;
938}
939ADD_TO_DEVTABLE("mdio", struct mdio_device_id, do_mdio_entry);
940
941/* Looks like: zorro:iN. */
942static int do_zorro_entry(const char *filename, struct zorro_device_id *id,
943 char *alias)
944{
945 id->id = TO_NATIVE(id->id);
946 strcpy(alias, "zorro:");
947 ADD(alias, "i", id->id != ZORRO_WILDCARD, id->id);
948 return 1;
949}
950ADD_TO_DEVTABLE("zorro", struct zorro_device_id, do_zorro_entry);
951
952/* looks like: "pnp:dD" */
953static int do_isapnp_entry(const char *filename,
954 struct isapnp_device_id *id, char *alias)
955{
956 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
957 'A' + ((id->vendor >> 2) & 0x3f) - 1,
958 'A' + (((id->vendor & 3) << 3) | ((id->vendor >> 13) & 7)) - 1,
959 'A' + ((id->vendor >> 8) & 0x1f) - 1,
960 (id->function >> 4) & 0x0f, id->function & 0x0f,
961 (id->function >> 12) & 0x0f, (id->function >> 8) & 0x0f);
962 return 1;
963}
964ADD_TO_DEVTABLE("isapnp", struct isapnp_device_id, do_isapnp_entry);
965
966/*
967 * Append a match expression for a single masked hex digit.
968 * outp points to a pointer to the character at which to append.
969 * *outp is updated on return to point just after the appended text,
970 * to facilitate further appending.
971 */
972static void append_nibble_mask(char **outp,
973 unsigned int nibble, unsigned int mask)
974{
975 char *p = *outp;
976 unsigned int i;
977
978 switch (mask) {
979 case 0:
980 *p++ = '?';
981 break;
982
983 case 0xf:
984 p += sprintf(p, "%X", nibble);
985 break;
986
987 default:
988 /*
989 * Dumbly emit a match pattern for all possible matching
990 * digits. This could be improved in some cases using ranges,
991 * but it has the advantage of being trivially correct, and is
992 * often optimal.
993 */
994 *p++ = '[';
995 for (i = 0; i < 0x10; i++)
996 if ((i & mask) == nibble)
997 p += sprintf(p, "%X", i);
998 *p++ = ']';
999 }
1000
1001 /* Ensure that the string remains NUL-terminated: */
1002 *p = '\0';
1003
1004 /* Advance the caller's end-of-string pointer: */
1005 *outp = p;
1006}
1007
1008/*
1009 * looks like: "amba:dN"
1010 *
1011 * N is exactly 8 digits, where each is an upper-case hex digit, or
1012 * a ? or [] pattern matching exactly one digit.
1013 */
1014static int do_amba_entry(const char *filename,
1015 struct amba_id *id, char *alias)
1016{
1017 unsigned int digit;
1018 char *p = alias;
1019
1020 if ((id->id & id->mask) != id->id)
1021 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1022 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1023 filename, id->id, id->mask);
1024
1025 p += sprintf(alias, "amba:d");
1026 for (digit = 0; digit < 8; digit++)
1027 append_nibble_mask(&p,
1028 (id->id >> (4 * (7 - digit))) & 0xf,
1029 (id->mask >> (4 * (7 - digit))) & 0xf);
1030
1031 return 1;
1032}
1033ADD_TO_DEVTABLE("amba", struct amba_id, do_amba_entry);
1034
1035/* LOOKS like x86cpu:vendor:VVVV:family:FFFF:model:MMMM:feature:*,FEAT,*
1036 * All fields are numbers. It would be nicer to use strings for vendor
1037 * and feature, but getting those out of the build system here is too
1038 * complicated.
1039 */
1040
1041static int do_x86cpu_entry(const char *filename, struct x86_cpu_id *id,
1042 char *alias)
1043{
1044 id->feature = TO_NATIVE(id->feature);
1045 id->family = TO_NATIVE(id->family);
1046 id->model = TO_NATIVE(id->model);
1047 id->vendor = TO_NATIVE(id->vendor);
1048
1049 strcpy(alias, "x86cpu:");
1050 ADD(alias, "vendor:", id->vendor != X86_VENDOR_ANY, id->vendor);
1051 ADD(alias, ":family:", id->family != X86_FAMILY_ANY, id->family);
1052 ADD(alias, ":model:", id->model != X86_MODEL_ANY, id->model);
1053 strcat(alias, ":feature:*");
1054 if (id->feature != X86_FEATURE_ANY)
1055 sprintf(alias + strlen(alias), "%04X*", id->feature);
1056 return 1;
1057}
1058ADD_TO_DEVTABLE("x86cpu", struct x86_cpu_id, do_x86cpu_entry);
1059
1060/* Does namelen bytes of name exactly match the symbol? */
1061static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1062{
1063 if (namelen != strlen(symbol))
1064 return false;
1065
1066 return memcmp(name, symbol, namelen) == 0;
1067}
1068
1069static void do_table(void *symval, unsigned long size,
1070 unsigned long id_size,
1071 const char *device_id,
1072 void *function,
1073 struct module *mod)
1074{
1075 unsigned int i;
1076 char alias[500];
1077 int (*do_entry)(const char *, void *entry, char *alias) = function;
1078
1079 device_id_check(mod->name, device_id, size, id_size, symval);
1080 /* Leave last one: it's the terminator. */
1081 size -= id_size;
1082
1083 for (i = 0; i < size; i += id_size) {
1084 if (do_entry(mod->name, symval+i, alias)) {
1085 buf_printf(&mod->dev_table_buf,
1086 "MODULE_ALIAS(\"%s\");\n", alias);
1087 }
1088 }
1089}
1090
1091/* Create MODULE_ALIAS() statements.
1092 * At this time, we cannot write the actual output C source yet,
1093 * so we write into the mod->dev_table_buf buffer. */
1094void handle_moddevtable(struct module *mod, struct elf_info *info,
1095 Elf_Sym *sym, const char *symname)
1096{
1097 void *symval;
1098 char *zeros = NULL;
1099 const char *name;
1100 unsigned int namelen;
1101
1102 /* We're looking for a section relative symbol */
1103 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1104 return;
1105
1106 /* We're looking for an object */
1107 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1108 return;
1109
1110 /* All our symbols are of form <prefix>__mod_XXX_device_table. */
1111 name = strstr(symname, "__mod_");
1112 if (!name)
1113 return;
1114 name += strlen("__mod_");
1115 namelen = strlen(name);
1116 if (namelen < strlen("_device_table"))
1117 return;
1118 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1119 return;
1120 namelen -= strlen("_device_table");
1121
1122 /* Handle all-NULL symbols allocated into .bss */
1123 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1124 zeros = calloc(1, sym->st_size);
1125 symval = zeros;
1126 } else {
1127 symval = (void *)info->hdr
1128 + info->sechdrs[get_secindex(info, sym)].sh_offset
1129 + sym->st_value;
1130 }
1131
1132 /* First handle the "special" cases */
1133 if (sym_is(name, namelen, "usb"))
1134 do_usb_table(symval, sym->st_size, mod);
1135 else if (sym_is(name, namelen, "pnp"))
1136 do_pnp_device_entry(symval, sym->st_size, mod);
1137 else if (sym_is(name, namelen, "pnp_card"))
1138 do_pnp_card_entries(symval, sym->st_size, mod);
1139 else {
1140 struct devtable **p;
1141 INIT_SECTION(__devtable);
1142
1143 for (p = __start___devtable; p < __stop___devtable; p++) {
1144 if (sym_is(name, namelen, (*p)->device_id)) {
1145 do_table(symval, sym->st_size, (*p)->id_size,
1146 (*p)->device_id, (*p)->function, mod);
1147 break;
1148 }
1149 }
1150 }
1151 free(zeros);
1152}
1153
1154/* Now add out buffered information to the generated C source */
1155void add_moddevtable(struct buffer *buf, struct module *mod)
1156{
1157 buf_printf(buf, "\n");
1158 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1159 free(mod->dev_table_buf.p);
1160}
1/* Simple code to turn various tables in an ELF file into alias definitions.
2 * This deals with kernel datastructures where they should be
3 * dealt with: in the kernel source.
4 *
5 * Copyright 2002-2003 Rusty Russell, IBM Corporation
6 * 2003 Kai Germaschewski
7 *
8 *
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
11 */
12
13#include "modpost.h"
14#include "devicetable-offsets.h"
15
16/* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
17 * use either stdint.h or inttypes.h for the rest. */
18#if KERNEL_ELFCLASS == ELFCLASS32
19typedef Elf32_Addr kernel_ulong_t;
20#define BITS_PER_LONG 32
21#else
22typedef Elf64_Addr kernel_ulong_t;
23#define BITS_PER_LONG 64
24#endif
25#ifdef __sun__
26#include <inttypes.h>
27#else
28#include <stdint.h>
29#endif
30
31#include <ctype.h>
32#include <stdbool.h>
33
34typedef uint32_t __u32;
35typedef uint16_t __u16;
36typedef unsigned char __u8;
37typedef struct {
38 __u8 b[16];
39} uuid_le;
40
41/* Big exception to the "don't include kernel headers into userspace, which
42 * even potentially has different endianness and word sizes, since
43 * we handle those differences explicitly below */
44#include "../../include/linux/mod_devicetable.h"
45
46/* This array collects all instances that use the generic do_table */
47struct devtable {
48 const char *device_id; /* name of table, __mod_<name>__*_device_table. */
49 unsigned long id_size;
50 void *function;
51};
52
53#define ___cat(a,b) a ## b
54#define __cat(a,b) ___cat(a,b)
55
56/* we need some special handling for this host tool running eventually on
57 * Darwin. The Mach-O section handling is a bit different than ELF section
58 * handling. The differnces in detail are:
59 * a) we have segments which have sections
60 * b) we need a API call to get the respective section symbols */
61#if defined(__MACH__)
62#include <mach-o/getsect.h>
63
64#define INIT_SECTION(name) do { \
65 unsigned long name ## _len; \
66 char *__cat(pstart_,name) = getsectdata("__TEXT", \
67 #name, &__cat(name,_len)); \
68 char *__cat(pstop_,name) = __cat(pstart_,name) + \
69 __cat(name, _len); \
70 __cat(__start_,name) = (void *)__cat(pstart_,name); \
71 __cat(__stop_,name) = (void *)__cat(pstop_,name); \
72 } while (0)
73#define SECTION(name) __attribute__((section("__TEXT, " #name)))
74
75struct devtable **__start___devtable, **__stop___devtable;
76#else
77#define INIT_SECTION(name) /* no-op for ELF */
78#define SECTION(name) __attribute__((section(#name)))
79
80/* We construct a table of pointers in an ELF section (pointers generally
81 * go unpadded by gcc). ld creates boundary syms for us. */
82extern struct devtable *__start___devtable[], *__stop___devtable[];
83#endif /* __MACH__ */
84
85#if !defined(__used)
86# if __GNUC__ == 3 && __GNUC_MINOR__ < 3
87# define __used __attribute__((__unused__))
88# else
89# define __used __attribute__((__used__))
90# endif
91#endif
92
93/* Define a variable f that holds the value of field f of struct devid
94 * based at address m.
95 */
96#define DEF_FIELD(m, devid, f) \
97 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f))
98/* Define a variable f that holds the address of field f of struct devid
99 * based at address m. Due to the way typeof works, for a field of type
100 * T[N] the variable has type T(*)[N], _not_ T*.
101 */
102#define DEF_FIELD_ADDR(m, devid, f) \
103 typeof(((struct devid *)0)->f) *f = ((m) + OFF_##devid##_##f)
104
105/* Add a table entry. We test function type matches while we're here. */
106#define ADD_TO_DEVTABLE(device_id, type, function) \
107 static struct devtable __cat(devtable,__LINE__) = { \
108 device_id + 0*sizeof((function)((const char *)NULL, \
109 (void *)NULL, \
110 (char *)NULL)), \
111 SIZE_##type, (function) }; \
112 static struct devtable *SECTION(__devtable) __used \
113 __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__)
114
115#define ADD(str, sep, cond, field) \
116do { \
117 strcat(str, sep); \
118 if (cond) \
119 sprintf(str + strlen(str), \
120 sizeof(field) == 1 ? "%02X" : \
121 sizeof(field) == 2 ? "%04X" : \
122 sizeof(field) == 4 ? "%08X" : "", \
123 field); \
124 else \
125 sprintf(str + strlen(str), "*"); \
126} while(0)
127
128/* End in a wildcard, for future extension */
129static inline void add_wildcard(char *str)
130{
131 int len = strlen(str);
132
133 if (str[len - 1] != '*')
134 strcat(str + len, "*");
135}
136
137static inline void add_uuid(char *str, uuid_le uuid)
138{
139 int len = strlen(str);
140
141 sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
142 uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0],
143 uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6],
144 uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11],
145 uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]);
146}
147
148/**
149 * Check that sizeof(device_id type) are consistent with size of section
150 * in .o file. If in-consistent then userspace and kernel does not agree
151 * on actual size which is a bug.
152 * Also verify that the final entry in the table is all zeros.
153 * Ignore both checks if build host differ from target host and size differs.
154 **/
155static void device_id_check(const char *modname, const char *device_id,
156 unsigned long size, unsigned long id_size,
157 void *symval)
158{
159 int i;
160
161 if (size % id_size || size < id_size) {
162 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
163 "of the size of "
164 "section __mod_%s__<identifier>_device_table=%lu.\n"
165 "Fix definition of struct %s_device_id "
166 "in mod_devicetable.h\n",
167 modname, device_id, id_size, device_id, size, device_id);
168 }
169 /* Verify last one is a terminator */
170 for (i = 0; i < id_size; i++ ) {
171 if (*(uint8_t*)(symval+size-id_size+i)) {
172 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
173 "The last of %lu is:\n",
174 modname, device_id, id_size, size / id_size);
175 for (i = 0; i < id_size; i++ )
176 fprintf(stderr,"0x%02x ",
177 *(uint8_t*)(symval+size-id_size+i) );
178 fprintf(stderr,"\n");
179 fatal("%s: struct %s_device_id is not terminated "
180 "with a NULL entry!\n", modname, device_id);
181 }
182 }
183}
184
185/* USB is special because the bcdDevice can be matched against a numeric range */
186/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
187static void do_usb_entry(void *symval,
188 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
189 unsigned char range_lo, unsigned char range_hi,
190 unsigned char max, struct module *mod)
191{
192 char alias[500];
193 DEF_FIELD(symval, usb_device_id, match_flags);
194 DEF_FIELD(symval, usb_device_id, idVendor);
195 DEF_FIELD(symval, usb_device_id, idProduct);
196 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
197 DEF_FIELD(symval, usb_device_id, bDeviceClass);
198 DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
199 DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
200 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
201 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
202 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
203 DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
204
205 strcpy(alias, "usb:");
206 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
207 idVendor);
208 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
209 idProduct);
210
211 strcat(alias, "d");
212 if (bcdDevice_initial_digits)
213 sprintf(alias + strlen(alias), "%0*X",
214 bcdDevice_initial_digits, bcdDevice_initial);
215 if (range_lo == range_hi)
216 sprintf(alias + strlen(alias), "%X", range_lo);
217 else if (range_lo > 0 || range_hi < max) {
218 if (range_lo > 0x9 || range_hi < 0xA)
219 sprintf(alias + strlen(alias),
220 "[%X-%X]",
221 range_lo,
222 range_hi);
223 else {
224 sprintf(alias + strlen(alias),
225 range_lo < 0x9 ? "[%X-9" : "[%X",
226 range_lo);
227 sprintf(alias + strlen(alias),
228 range_hi > 0xA ? "A-%X]" : "%X]",
229 range_hi);
230 }
231 }
232 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
233 strcat(alias, "*");
234
235 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
236 bDeviceClass);
237 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
238 bDeviceSubClass);
239 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
240 bDeviceProtocol);
241 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
242 bInterfaceClass);
243 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
244 bInterfaceSubClass);
245 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
246 bInterfaceProtocol);
247 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
248 bInterfaceNumber);
249
250 add_wildcard(alias);
251 buf_printf(&mod->dev_table_buf,
252 "MODULE_ALIAS(\"%s\");\n", alias);
253}
254
255/* Handles increment/decrement of BCD formatted integers */
256/* Returns the previous value, so it works like i++ or i-- */
257static unsigned int incbcd(unsigned int *bcd,
258 int inc,
259 unsigned char max,
260 size_t chars)
261{
262 unsigned int init = *bcd, i, j;
263 unsigned long long c, dec = 0;
264
265 /* If bcd is not in BCD format, just increment */
266 if (max > 0x9) {
267 *bcd += inc;
268 return init;
269 }
270
271 /* Convert BCD to Decimal */
272 for (i=0 ; i < chars ; i++) {
273 c = (*bcd >> (i << 2)) & 0xf;
274 c = c > 9 ? 9 : c; /* force to bcd just in case */
275 for (j=0 ; j < i ; j++)
276 c = c * 10;
277 dec += c;
278 }
279
280 /* Do our increment/decrement */
281 dec += inc;
282 *bcd = 0;
283
284 /* Convert back to BCD */
285 for (i=0 ; i < chars ; i++) {
286 for (c=1,j=0 ; j < i ; j++)
287 c = c * 10;
288 c = (dec / c) % 10;
289 *bcd += c << (i << 2);
290 }
291 return init;
292}
293
294static void do_usb_entry_multi(void *symval, struct module *mod)
295{
296 unsigned int devlo, devhi;
297 unsigned char chi, clo, max;
298 int ndigits;
299
300 DEF_FIELD(symval, usb_device_id, match_flags);
301 DEF_FIELD(symval, usb_device_id, idVendor);
302 DEF_FIELD(symval, usb_device_id, idProduct);
303 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
304 DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
305 DEF_FIELD(symval, usb_device_id, bDeviceClass);
306 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
307
308 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
309 bcdDevice_lo : 0x0U;
310 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
311 bcdDevice_hi : ~0x0U;
312
313 /* Figure out if this entry is in bcd or hex format */
314 max = 0x9; /* Default to decimal format */
315 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
316 clo = (devlo >> (ndigits << 2)) & 0xf;
317 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
318 if (clo > max || chi > max) {
319 max = 0xf;
320 break;
321 }
322 }
323
324 /*
325 * Some modules (visor) have empty slots as placeholder for
326 * run-time specification that results in catch-all alias
327 */
328 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
329 return;
330
331 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
332 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
333 clo = devlo & 0xf;
334 chi = devhi & 0xf;
335 if (chi > max) /* If we are in bcd mode, truncate if necessary */
336 chi = max;
337 devlo >>= 4;
338 devhi >>= 4;
339
340 if (devlo == devhi || !ndigits) {
341 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
342 break;
343 }
344
345 if (clo > 0x0)
346 do_usb_entry(symval,
347 incbcd(&devlo, 1, max,
348 sizeof(bcdDevice_lo) * 2),
349 ndigits, clo, max, max, mod);
350
351 if (chi < max)
352 do_usb_entry(symval,
353 incbcd(&devhi, -1, max,
354 sizeof(bcdDevice_lo) * 2),
355 ndigits, 0x0, chi, max, mod);
356 }
357}
358
359static void do_usb_table(void *symval, unsigned long size,
360 struct module *mod)
361{
362 unsigned int i;
363 const unsigned long id_size = SIZE_usb_device_id;
364
365 device_id_check(mod->name, "usb", size, id_size, symval);
366
367 /* Leave last one: it's the terminator. */
368 size -= id_size;
369
370 for (i = 0; i < size; i += id_size)
371 do_usb_entry_multi(symval + i, mod);
372}
373
374static void do_of_entry_multi(void *symval, struct module *mod)
375{
376 char alias[500];
377 int len;
378 char *tmp;
379
380 DEF_FIELD_ADDR(symval, of_device_id, name);
381 DEF_FIELD_ADDR(symval, of_device_id, type);
382 DEF_FIELD_ADDR(symval, of_device_id, compatible);
383
384 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
385 (*type)[0] ? *type : "*");
386
387 if ((*compatible)[0])
388 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
389 *compatible);
390
391 /* Replace all whitespace with underscores */
392 for (tmp = alias; tmp && *tmp; tmp++)
393 if (isspace(*tmp))
394 *tmp = '_';
395
396 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
397 strcat(alias, "C");
398 add_wildcard(alias);
399 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
400}
401
402static void do_of_table(void *symval, unsigned long size,
403 struct module *mod)
404{
405 unsigned int i;
406 const unsigned long id_size = SIZE_of_device_id;
407
408 device_id_check(mod->name, "of", size, id_size, symval);
409
410 /* Leave last one: it's the terminator. */
411 size -= id_size;
412
413 for (i = 0; i < size; i += id_size)
414 do_of_entry_multi(symval + i, mod);
415}
416
417/* Looks like: hid:bNvNpN */
418static int do_hid_entry(const char *filename,
419 void *symval, char *alias)
420{
421 DEF_FIELD(symval, hid_device_id, bus);
422 DEF_FIELD(symval, hid_device_id, group);
423 DEF_FIELD(symval, hid_device_id, vendor);
424 DEF_FIELD(symval, hid_device_id, product);
425
426 sprintf(alias, "hid:");
427 ADD(alias, "b", bus != HID_BUS_ANY, bus);
428 ADD(alias, "g", group != HID_GROUP_ANY, group);
429 ADD(alias, "v", vendor != HID_ANY_ID, vendor);
430 ADD(alias, "p", product != HID_ANY_ID, product);
431
432 return 1;
433}
434ADD_TO_DEVTABLE("hid", hid_device_id, do_hid_entry);
435
436/* Looks like: ieee1394:venNmoNspNverN */
437static int do_ieee1394_entry(const char *filename,
438 void *symval, char *alias)
439{
440 DEF_FIELD(symval, ieee1394_device_id, match_flags);
441 DEF_FIELD(symval, ieee1394_device_id, vendor_id);
442 DEF_FIELD(symval, ieee1394_device_id, model_id);
443 DEF_FIELD(symval, ieee1394_device_id, specifier_id);
444 DEF_FIELD(symval, ieee1394_device_id, version);
445
446 strcpy(alias, "ieee1394:");
447 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
448 vendor_id);
449 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
450 model_id);
451 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
452 specifier_id);
453 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
454 version);
455
456 add_wildcard(alias);
457 return 1;
458}
459ADD_TO_DEVTABLE("ieee1394", ieee1394_device_id, do_ieee1394_entry);
460
461/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
462static int do_pci_entry(const char *filename,
463 void *symval, char *alias)
464{
465 /* Class field can be divided into these three. */
466 unsigned char baseclass, subclass, interface,
467 baseclass_mask, subclass_mask, interface_mask;
468
469 DEF_FIELD(symval, pci_device_id, vendor);
470 DEF_FIELD(symval, pci_device_id, device);
471 DEF_FIELD(symval, pci_device_id, subvendor);
472 DEF_FIELD(symval, pci_device_id, subdevice);
473 DEF_FIELD(symval, pci_device_id, class);
474 DEF_FIELD(symval, pci_device_id, class_mask);
475
476 strcpy(alias, "pci:");
477 ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
478 ADD(alias, "d", device != PCI_ANY_ID, device);
479 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
480 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
481
482 baseclass = (class) >> 16;
483 baseclass_mask = (class_mask) >> 16;
484 subclass = (class) >> 8;
485 subclass_mask = (class_mask) >> 8;
486 interface = class;
487 interface_mask = class_mask;
488
489 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
490 || (subclass_mask != 0 && subclass_mask != 0xFF)
491 || (interface_mask != 0 && interface_mask != 0xFF)) {
492 warn("Can't handle masks in %s:%04X\n",
493 filename, class_mask);
494 return 0;
495 }
496
497 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
498 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
499 ADD(alias, "i", interface_mask == 0xFF, interface);
500 add_wildcard(alias);
501 return 1;
502}
503ADD_TO_DEVTABLE("pci", pci_device_id, do_pci_entry);
504
505/* looks like: "ccw:tNmNdtNdmN" */
506static int do_ccw_entry(const char *filename,
507 void *symval, char *alias)
508{
509 DEF_FIELD(symval, ccw_device_id, match_flags);
510 DEF_FIELD(symval, ccw_device_id, cu_type);
511 DEF_FIELD(symval, ccw_device_id, cu_model);
512 DEF_FIELD(symval, ccw_device_id, dev_type);
513 DEF_FIELD(symval, ccw_device_id, dev_model);
514
515 strcpy(alias, "ccw:");
516 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
517 cu_type);
518 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
519 cu_model);
520 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
521 dev_type);
522 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
523 dev_model);
524 add_wildcard(alias);
525 return 1;
526}
527ADD_TO_DEVTABLE("ccw", ccw_device_id, do_ccw_entry);
528
529/* looks like: "ap:tN" */
530static int do_ap_entry(const char *filename,
531 void *symval, char *alias)
532{
533 DEF_FIELD(symval, ap_device_id, dev_type);
534
535 sprintf(alias, "ap:t%02X*", dev_type);
536 return 1;
537}
538ADD_TO_DEVTABLE("ap", ap_device_id, do_ap_entry);
539
540/* looks like: "css:tN" */
541static int do_css_entry(const char *filename,
542 void *symval, char *alias)
543{
544 DEF_FIELD(symval, css_device_id, type);
545
546 sprintf(alias, "css:t%01X", type);
547 return 1;
548}
549ADD_TO_DEVTABLE("css", css_device_id, do_css_entry);
550
551/* Looks like: "serio:tyNprNidNexN" */
552static int do_serio_entry(const char *filename,
553 void *symval, char *alias)
554{
555 DEF_FIELD(symval, serio_device_id, type);
556 DEF_FIELD(symval, serio_device_id, proto);
557 DEF_FIELD(symval, serio_device_id, id);
558 DEF_FIELD(symval, serio_device_id, extra);
559
560 strcpy(alias, "serio:");
561 ADD(alias, "ty", type != SERIO_ANY, type);
562 ADD(alias, "pr", proto != SERIO_ANY, proto);
563 ADD(alias, "id", id != SERIO_ANY, id);
564 ADD(alias, "ex", extra != SERIO_ANY, extra);
565
566 add_wildcard(alias);
567 return 1;
568}
569ADD_TO_DEVTABLE("serio", serio_device_id, do_serio_entry);
570
571/* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or
572 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if)
573 *
574 * NOTE: Each driver should use one of the following : _HID, _CIDs
575 * or _CLS. Also, bb, ss, and pp can be substituted with ??
576 * as don't care byte.
577 */
578static int do_acpi_entry(const char *filename,
579 void *symval, char *alias)
580{
581 DEF_FIELD_ADDR(symval, acpi_device_id, id);
582 DEF_FIELD_ADDR(symval, acpi_device_id, cls);
583 DEF_FIELD_ADDR(symval, acpi_device_id, cls_msk);
584
585 if (id && strlen((const char *)*id))
586 sprintf(alias, "acpi*:%s:*", *id);
587 else if (cls) {
588 int i, byte_shift, cnt = 0;
589 unsigned int msk;
590
591 sprintf(&alias[cnt], "acpi*:");
592 cnt = 6;
593 for (i = 1; i <= 3; i++) {
594 byte_shift = 8 * (3-i);
595 msk = (*cls_msk >> byte_shift) & 0xFF;
596 if (msk)
597 sprintf(&alias[cnt], "%02x",
598 (*cls >> byte_shift) & 0xFF);
599 else
600 sprintf(&alias[cnt], "??");
601 cnt += 2;
602 }
603 sprintf(&alias[cnt], ":*");
604 }
605 return 1;
606}
607ADD_TO_DEVTABLE("acpi", acpi_device_id, do_acpi_entry);
608
609/* looks like: "pnp:dD" */
610static void do_pnp_device_entry(void *symval, unsigned long size,
611 struct module *mod)
612{
613 const unsigned long id_size = SIZE_pnp_device_id;
614 const unsigned int count = (size / id_size)-1;
615 unsigned int i;
616
617 device_id_check(mod->name, "pnp", size, id_size, symval);
618
619 for (i = 0; i < count; i++) {
620 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id);
621 char acpi_id[sizeof(*id)];
622 int j;
623
624 buf_printf(&mod->dev_table_buf,
625 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
626
627 /* fix broken pnp bus lowercasing */
628 for (j = 0; j < sizeof(acpi_id); j++)
629 acpi_id[j] = toupper((*id)[j]);
630 buf_printf(&mod->dev_table_buf,
631 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
632 }
633}
634
635/* looks like: "pnp:dD" for every device of the card */
636static void do_pnp_card_entries(void *symval, unsigned long size,
637 struct module *mod)
638{
639 const unsigned long id_size = SIZE_pnp_card_device_id;
640 const unsigned int count = (size / id_size)-1;
641 unsigned int i;
642
643 device_id_check(mod->name, "pnp", size, id_size, symval);
644
645 for (i = 0; i < count; i++) {
646 unsigned int j;
647 DEF_FIELD_ADDR(symval + i*id_size, pnp_card_device_id, devs);
648
649 for (j = 0; j < PNP_MAX_DEVICES; j++) {
650 const char *id = (char *)(*devs)[j].id;
651 int i2, j2;
652 int dup = 0;
653
654 if (!id[0])
655 break;
656
657 /* find duplicate, already added value */
658 for (i2 = 0; i2 < i && !dup; i2++) {
659 DEF_FIELD_ADDR(symval + i2*id_size, pnp_card_device_id, devs);
660
661 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
662 const char *id2 = (char *)(*devs)[j2].id;
663
664 if (!id2[0])
665 break;
666
667 if (!strcmp(id, id2)) {
668 dup = 1;
669 break;
670 }
671 }
672 }
673
674 /* add an individual alias for every device entry */
675 if (!dup) {
676 char acpi_id[PNP_ID_LEN];
677 int k;
678
679 buf_printf(&mod->dev_table_buf,
680 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
681
682 /* fix broken pnp bus lowercasing */
683 for (k = 0; k < sizeof(acpi_id); k++)
684 acpi_id[k] = toupper(id[k]);
685 buf_printf(&mod->dev_table_buf,
686 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
687 }
688 }
689 }
690}
691
692/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
693static int do_pcmcia_entry(const char *filename,
694 void *symval, char *alias)
695{
696 unsigned int i;
697 DEF_FIELD(symval, pcmcia_device_id, match_flags);
698 DEF_FIELD(symval, pcmcia_device_id, manf_id);
699 DEF_FIELD(symval, pcmcia_device_id, card_id);
700 DEF_FIELD(symval, pcmcia_device_id, func_id);
701 DEF_FIELD(symval, pcmcia_device_id, function);
702 DEF_FIELD(symval, pcmcia_device_id, device_no);
703 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
704
705 for (i=0; i<4; i++) {
706 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]);
707 }
708
709 strcpy(alias, "pcmcia:");
710 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
711 manf_id);
712 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
713 card_id);
714 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
715 func_id);
716 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
717 function);
718 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
719 device_no);
720 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]);
721 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]);
722 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]);
723 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]);
724
725 add_wildcard(alias);
726 return 1;
727}
728ADD_TO_DEVTABLE("pcmcia", pcmcia_device_id, do_pcmcia_entry);
729
730static int do_vio_entry(const char *filename, void *symval,
731 char *alias)
732{
733 char *tmp;
734 DEF_FIELD_ADDR(symval, vio_device_id, type);
735 DEF_FIELD_ADDR(symval, vio_device_id, compat);
736
737 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
738 (*compat)[0] ? *compat : "*");
739
740 /* Replace all whitespace with underscores */
741 for (tmp = alias; tmp && *tmp; tmp++)
742 if (isspace (*tmp))
743 *tmp = '_';
744
745 add_wildcard(alias);
746 return 1;
747}
748ADD_TO_DEVTABLE("vio", vio_device_id, do_vio_entry);
749
750#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
751
752static void do_input(char *alias,
753 kernel_ulong_t *arr, unsigned int min, unsigned int max)
754{
755 unsigned int i;
756
757 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++)
758 arr[i] = TO_NATIVE(arr[i]);
759 for (i = min; i < max; i++)
760 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
761 sprintf(alias + strlen(alias), "%X,*", i);
762}
763
764/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
765static int do_input_entry(const char *filename, void *symval,
766 char *alias)
767{
768 DEF_FIELD(symval, input_device_id, flags);
769 DEF_FIELD(symval, input_device_id, bustype);
770 DEF_FIELD(symval, input_device_id, vendor);
771 DEF_FIELD(symval, input_device_id, product);
772 DEF_FIELD(symval, input_device_id, version);
773 DEF_FIELD_ADDR(symval, input_device_id, evbit);
774 DEF_FIELD_ADDR(symval, input_device_id, keybit);
775 DEF_FIELD_ADDR(symval, input_device_id, relbit);
776 DEF_FIELD_ADDR(symval, input_device_id, absbit);
777 DEF_FIELD_ADDR(symval, input_device_id, mscbit);
778 DEF_FIELD_ADDR(symval, input_device_id, ledbit);
779 DEF_FIELD_ADDR(symval, input_device_id, sndbit);
780 DEF_FIELD_ADDR(symval, input_device_id, ffbit);
781 DEF_FIELD_ADDR(symval, input_device_id, swbit);
782
783 sprintf(alias, "input:");
784
785 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
786 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
787 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
788 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
789
790 sprintf(alias + strlen(alias), "-e*");
791 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
792 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
793 sprintf(alias + strlen(alias), "k*");
794 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
795 do_input(alias, *keybit,
796 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
797 INPUT_DEVICE_ID_KEY_MAX);
798 sprintf(alias + strlen(alias), "r*");
799 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
800 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
801 sprintf(alias + strlen(alias), "a*");
802 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
803 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
804 sprintf(alias + strlen(alias), "m*");
805 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
806 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
807 sprintf(alias + strlen(alias), "l*");
808 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
809 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
810 sprintf(alias + strlen(alias), "s*");
811 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
812 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
813 sprintf(alias + strlen(alias), "f*");
814 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
815 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
816 sprintf(alias + strlen(alias), "w*");
817 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
818 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
819 return 1;
820}
821ADD_TO_DEVTABLE("input", input_device_id, do_input_entry);
822
823static int do_eisa_entry(const char *filename, void *symval,
824 char *alias)
825{
826 DEF_FIELD_ADDR(symval, eisa_device_id, sig);
827 if (sig[0])
828 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig);
829 else
830 strcat(alias, "*");
831 return 1;
832}
833ADD_TO_DEVTABLE("eisa", eisa_device_id, do_eisa_entry);
834
835/* Looks like: parisc:tNhvNrevNsvN */
836static int do_parisc_entry(const char *filename, void *symval,
837 char *alias)
838{
839 DEF_FIELD(symval, parisc_device_id, hw_type);
840 DEF_FIELD(symval, parisc_device_id, hversion);
841 DEF_FIELD(symval, parisc_device_id, hversion_rev);
842 DEF_FIELD(symval, parisc_device_id, sversion);
843
844 strcpy(alias, "parisc:");
845 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
846 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
847 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
848 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
849
850 add_wildcard(alias);
851 return 1;
852}
853ADD_TO_DEVTABLE("parisc", parisc_device_id, do_parisc_entry);
854
855/* Looks like: sdio:cNvNdN. */
856static int do_sdio_entry(const char *filename,
857 void *symval, char *alias)
858{
859 DEF_FIELD(symval, sdio_device_id, class);
860 DEF_FIELD(symval, sdio_device_id, vendor);
861 DEF_FIELD(symval, sdio_device_id, device);
862
863 strcpy(alias, "sdio:");
864 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
865 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
866 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
867 add_wildcard(alias);
868 return 1;
869}
870ADD_TO_DEVTABLE("sdio", sdio_device_id, do_sdio_entry);
871
872/* Looks like: ssb:vNidNrevN. */
873static int do_ssb_entry(const char *filename,
874 void *symval, char *alias)
875{
876 DEF_FIELD(symval, ssb_device_id, vendor);
877 DEF_FIELD(symval, ssb_device_id, coreid);
878 DEF_FIELD(symval, ssb_device_id, revision);
879
880 strcpy(alias, "ssb:");
881 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
882 ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
883 ADD(alias, "rev", revision != SSB_ANY_REV, revision);
884 add_wildcard(alias);
885 return 1;
886}
887ADD_TO_DEVTABLE("ssb", ssb_device_id, do_ssb_entry);
888
889/* Looks like: bcma:mNidNrevNclN. */
890static int do_bcma_entry(const char *filename,
891 void *symval, char *alias)
892{
893 DEF_FIELD(symval, bcma_device_id, manuf);
894 DEF_FIELD(symval, bcma_device_id, id);
895 DEF_FIELD(symval, bcma_device_id, rev);
896 DEF_FIELD(symval, bcma_device_id, class);
897
898 strcpy(alias, "bcma:");
899 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
900 ADD(alias, "id", id != BCMA_ANY_ID, id);
901 ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
902 ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
903 add_wildcard(alias);
904 return 1;
905}
906ADD_TO_DEVTABLE("bcma", bcma_device_id, do_bcma_entry);
907
908/* Looks like: virtio:dNvN */
909static int do_virtio_entry(const char *filename, void *symval,
910 char *alias)
911{
912 DEF_FIELD(symval, virtio_device_id, device);
913 DEF_FIELD(symval, virtio_device_id, vendor);
914
915 strcpy(alias, "virtio:");
916 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
917 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
918
919 add_wildcard(alias);
920 return 1;
921}
922ADD_TO_DEVTABLE("virtio", virtio_device_id, do_virtio_entry);
923
924/*
925 * Looks like: vmbus:guid
926 * Each byte of the guid will be represented by two hex characters
927 * in the name.
928 */
929
930static int do_vmbus_entry(const char *filename, void *symval,
931 char *alias)
932{
933 int i;
934 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
935 char guid_name[(sizeof(*guid) + 1) * 2];
936
937 for (i = 0; i < (sizeof(*guid) * 2); i += 2)
938 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2]));
939
940 strcpy(alias, "vmbus:");
941 strcat(alias, guid_name);
942
943 return 1;
944}
945ADD_TO_DEVTABLE("vmbus", hv_vmbus_device_id, do_vmbus_entry);
946
947/* Looks like: i2c:S */
948static int do_i2c_entry(const char *filename, void *symval,
949 char *alias)
950{
951 DEF_FIELD_ADDR(symval, i2c_device_id, name);
952 sprintf(alias, I2C_MODULE_PREFIX "%s", *name);
953
954 return 1;
955}
956ADD_TO_DEVTABLE("i2c", i2c_device_id, do_i2c_entry);
957
958/* Looks like: spi:S */
959static int do_spi_entry(const char *filename, void *symval,
960 char *alias)
961{
962 DEF_FIELD_ADDR(symval, spi_device_id, name);
963 sprintf(alias, SPI_MODULE_PREFIX "%s", *name);
964
965 return 1;
966}
967ADD_TO_DEVTABLE("spi", spi_device_id, do_spi_entry);
968
969static const struct dmifield {
970 const char *prefix;
971 int field;
972} dmi_fields[] = {
973 { "bvn", DMI_BIOS_VENDOR },
974 { "bvr", DMI_BIOS_VERSION },
975 { "bd", DMI_BIOS_DATE },
976 { "svn", DMI_SYS_VENDOR },
977 { "pn", DMI_PRODUCT_NAME },
978 { "pvr", DMI_PRODUCT_VERSION },
979 { "rvn", DMI_BOARD_VENDOR },
980 { "rn", DMI_BOARD_NAME },
981 { "rvr", DMI_BOARD_VERSION },
982 { "cvn", DMI_CHASSIS_VENDOR },
983 { "ct", DMI_CHASSIS_TYPE },
984 { "cvr", DMI_CHASSIS_VERSION },
985 { NULL, DMI_NONE }
986};
987
988static void dmi_ascii_filter(char *d, const char *s)
989{
990 /* Filter out characters we don't want to see in the modalias string */
991 for (; *s; s++)
992 if (*s > ' ' && *s < 127 && *s != ':')
993 *(d++) = *s;
994
995 *d = 0;
996}
997
998
999static int do_dmi_entry(const char *filename, void *symval,
1000 char *alias)
1001{
1002 int i, j;
1003 DEF_FIELD_ADDR(symval, dmi_system_id, matches);
1004 sprintf(alias, "dmi*");
1005
1006 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
1007 for (j = 0; j < 4; j++) {
1008 if ((*matches)[j].slot &&
1009 (*matches)[j].slot == dmi_fields[i].field) {
1010 sprintf(alias + strlen(alias), ":%s*",
1011 dmi_fields[i].prefix);
1012 dmi_ascii_filter(alias + strlen(alias),
1013 (*matches)[j].substr);
1014 strcat(alias, "*");
1015 }
1016 }
1017 }
1018
1019 strcat(alias, ":");
1020 return 1;
1021}
1022ADD_TO_DEVTABLE("dmi", dmi_system_id, do_dmi_entry);
1023
1024static int do_platform_entry(const char *filename,
1025 void *symval, char *alias)
1026{
1027 DEF_FIELD_ADDR(symval, platform_device_id, name);
1028 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name);
1029 return 1;
1030}
1031ADD_TO_DEVTABLE("platform", platform_device_id, do_platform_entry);
1032
1033static int do_mdio_entry(const char *filename,
1034 void *symval, char *alias)
1035{
1036 int i;
1037 DEF_FIELD(symval, mdio_device_id, phy_id);
1038 DEF_FIELD(symval, mdio_device_id, phy_id_mask);
1039
1040 alias += sprintf(alias, MDIO_MODULE_PREFIX);
1041
1042 for (i = 0; i < 32; i++) {
1043 if (!((phy_id_mask >> (31-i)) & 1))
1044 *(alias++) = '?';
1045 else if ((phy_id >> (31-i)) & 1)
1046 *(alias++) = '1';
1047 else
1048 *(alias++) = '0';
1049 }
1050
1051 /* Terminate the string */
1052 *alias = 0;
1053
1054 return 1;
1055}
1056ADD_TO_DEVTABLE("mdio", mdio_device_id, do_mdio_entry);
1057
1058/* Looks like: zorro:iN. */
1059static int do_zorro_entry(const char *filename, void *symval,
1060 char *alias)
1061{
1062 DEF_FIELD(symval, zorro_device_id, id);
1063 strcpy(alias, "zorro:");
1064 ADD(alias, "i", id != ZORRO_WILDCARD, id);
1065 return 1;
1066}
1067ADD_TO_DEVTABLE("zorro", zorro_device_id, do_zorro_entry);
1068
1069/* looks like: "pnp:dD" */
1070static int do_isapnp_entry(const char *filename,
1071 void *symval, char *alias)
1072{
1073 DEF_FIELD(symval, isapnp_device_id, vendor);
1074 DEF_FIELD(symval, isapnp_device_id, function);
1075 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
1076 'A' + ((vendor >> 2) & 0x3f) - 1,
1077 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
1078 'A' + ((vendor >> 8) & 0x1f) - 1,
1079 (function >> 4) & 0x0f, function & 0x0f,
1080 (function >> 12) & 0x0f, (function >> 8) & 0x0f);
1081 return 1;
1082}
1083ADD_TO_DEVTABLE("isapnp", isapnp_device_id, do_isapnp_entry);
1084
1085/* Looks like: "ipack:fNvNdN". */
1086static int do_ipack_entry(const char *filename,
1087 void *symval, char *alias)
1088{
1089 DEF_FIELD(symval, ipack_device_id, format);
1090 DEF_FIELD(symval, ipack_device_id, vendor);
1091 DEF_FIELD(symval, ipack_device_id, device);
1092 strcpy(alias, "ipack:");
1093 ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
1094 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
1095 ADD(alias, "d", device != IPACK_ANY_ID, device);
1096 add_wildcard(alias);
1097 return 1;
1098}
1099ADD_TO_DEVTABLE("ipack", ipack_device_id, do_ipack_entry);
1100
1101/*
1102 * Append a match expression for a single masked hex digit.
1103 * outp points to a pointer to the character at which to append.
1104 * *outp is updated on return to point just after the appended text,
1105 * to facilitate further appending.
1106 */
1107static void append_nibble_mask(char **outp,
1108 unsigned int nibble, unsigned int mask)
1109{
1110 char *p = *outp;
1111 unsigned int i;
1112
1113 switch (mask) {
1114 case 0:
1115 *p++ = '?';
1116 break;
1117
1118 case 0xf:
1119 p += sprintf(p, "%X", nibble);
1120 break;
1121
1122 default:
1123 /*
1124 * Dumbly emit a match pattern for all possible matching
1125 * digits. This could be improved in some cases using ranges,
1126 * but it has the advantage of being trivially correct, and is
1127 * often optimal.
1128 */
1129 *p++ = '[';
1130 for (i = 0; i < 0x10; i++)
1131 if ((i & mask) == nibble)
1132 p += sprintf(p, "%X", i);
1133 *p++ = ']';
1134 }
1135
1136 /* Ensure that the string remains NUL-terminated: */
1137 *p = '\0';
1138
1139 /* Advance the caller's end-of-string pointer: */
1140 *outp = p;
1141}
1142
1143/*
1144 * looks like: "amba:dN"
1145 *
1146 * N is exactly 8 digits, where each is an upper-case hex digit, or
1147 * a ? or [] pattern matching exactly one digit.
1148 */
1149static int do_amba_entry(const char *filename,
1150 void *symval, char *alias)
1151{
1152 unsigned int digit;
1153 char *p = alias;
1154 DEF_FIELD(symval, amba_id, id);
1155 DEF_FIELD(symval, amba_id, mask);
1156
1157 if ((id & mask) != id)
1158 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1159 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1160 filename, id, mask);
1161
1162 p += sprintf(alias, "amba:d");
1163 for (digit = 0; digit < 8; digit++)
1164 append_nibble_mask(&p,
1165 (id >> (4 * (7 - digit))) & 0xf,
1166 (mask >> (4 * (7 - digit))) & 0xf);
1167
1168 return 1;
1169}
1170ADD_TO_DEVTABLE("amba", amba_id, do_amba_entry);
1171
1172/*
1173 * looks like: "mipscdmm:tN"
1174 *
1175 * N is exactly 2 digits, where each is an upper-case hex digit, or
1176 * a ? or [] pattern matching exactly one digit.
1177 */
1178static int do_mips_cdmm_entry(const char *filename,
1179 void *symval, char *alias)
1180{
1181 DEF_FIELD(symval, mips_cdmm_device_id, type);
1182
1183 sprintf(alias, "mipscdmm:t%02X*", type);
1184 return 1;
1185}
1186ADD_TO_DEVTABLE("mipscdmm", mips_cdmm_device_id, do_mips_cdmm_entry);
1187
1188/* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
1189 * All fields are numbers. It would be nicer to use strings for vendor
1190 * and feature, but getting those out of the build system here is too
1191 * complicated.
1192 */
1193
1194static int do_x86cpu_entry(const char *filename, void *symval,
1195 char *alias)
1196{
1197 DEF_FIELD(symval, x86_cpu_id, feature);
1198 DEF_FIELD(symval, x86_cpu_id, family);
1199 DEF_FIELD(symval, x86_cpu_id, model);
1200 DEF_FIELD(symval, x86_cpu_id, vendor);
1201
1202 strcpy(alias, "cpu:type:x86,");
1203 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
1204 ADD(alias, "fam", family != X86_FAMILY_ANY, family);
1205 ADD(alias, "mod", model != X86_MODEL_ANY, model);
1206 strcat(alias, ":feature:*");
1207 if (feature != X86_FEATURE_ANY)
1208 sprintf(alias + strlen(alias), "%04X*", feature);
1209 return 1;
1210}
1211ADD_TO_DEVTABLE("x86cpu", x86_cpu_id, do_x86cpu_entry);
1212
1213/* LOOKS like cpu:type:*:feature:*FEAT* */
1214static int do_cpu_entry(const char *filename, void *symval, char *alias)
1215{
1216 DEF_FIELD(symval, cpu_feature, feature);
1217
1218 sprintf(alias, "cpu:type:*:feature:*%04X*", feature);
1219 return 1;
1220}
1221ADD_TO_DEVTABLE("cpu", cpu_feature, do_cpu_entry);
1222
1223/* Looks like: mei:S:uuid:N:* */
1224static int do_mei_entry(const char *filename, void *symval,
1225 char *alias)
1226{
1227 DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
1228 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid);
1229 DEF_FIELD(symval, mei_cl_device_id, version);
1230
1231 sprintf(alias, MEI_CL_MODULE_PREFIX);
1232 sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*");
1233 add_uuid(alias, *uuid);
1234 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version);
1235
1236 strcat(alias, ":*");
1237
1238 return 1;
1239}
1240ADD_TO_DEVTABLE("mei", mei_cl_device_id, do_mei_entry);
1241
1242/* Looks like: rapidio:vNdNavNadN */
1243static int do_rio_entry(const char *filename,
1244 void *symval, char *alias)
1245{
1246 DEF_FIELD(symval, rio_device_id, did);
1247 DEF_FIELD(symval, rio_device_id, vid);
1248 DEF_FIELD(symval, rio_device_id, asm_did);
1249 DEF_FIELD(symval, rio_device_id, asm_vid);
1250
1251 strcpy(alias, "rapidio:");
1252 ADD(alias, "v", vid != RIO_ANY_ID, vid);
1253 ADD(alias, "d", did != RIO_ANY_ID, did);
1254 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
1255 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
1256
1257 add_wildcard(alias);
1258 return 1;
1259}
1260ADD_TO_DEVTABLE("rapidio", rio_device_id, do_rio_entry);
1261
1262/* Looks like: ulpi:vNpN */
1263static int do_ulpi_entry(const char *filename, void *symval,
1264 char *alias)
1265{
1266 DEF_FIELD(symval, ulpi_device_id, vendor);
1267 DEF_FIELD(symval, ulpi_device_id, product);
1268
1269 sprintf(alias, "ulpi:v%04xp%04x", vendor, product);
1270
1271 return 1;
1272}
1273ADD_TO_DEVTABLE("ulpi", ulpi_device_id, do_ulpi_entry);
1274
1275/* Looks like: hdaudio:vNrNaN */
1276static int do_hda_entry(const char *filename, void *symval, char *alias)
1277{
1278 DEF_FIELD(symval, hda_device_id, vendor_id);
1279 DEF_FIELD(symval, hda_device_id, rev_id);
1280 DEF_FIELD(symval, hda_device_id, api_version);
1281
1282 strcpy(alias, "hdaudio:");
1283 ADD(alias, "v", vendor_id != 0, vendor_id);
1284 ADD(alias, "r", rev_id != 0, rev_id);
1285 ADD(alias, "a", api_version != 0, api_version);
1286
1287 add_wildcard(alias);
1288 return 1;
1289}
1290ADD_TO_DEVTABLE("hdaudio", hda_device_id, do_hda_entry);
1291
1292/* Looks like: sdw:mNpN */
1293static int do_sdw_entry(const char *filename, void *symval, char *alias)
1294{
1295 DEF_FIELD(symval, sdw_device_id, mfg_id);
1296 DEF_FIELD(symval, sdw_device_id, part_id);
1297
1298 strcpy(alias, "sdw:");
1299 ADD(alias, "m", mfg_id != 0, mfg_id);
1300 ADD(alias, "p", part_id != 0, part_id);
1301
1302 add_wildcard(alias);
1303 return 1;
1304}
1305ADD_TO_DEVTABLE("sdw", sdw_device_id, do_sdw_entry);
1306
1307/* Looks like: fsl-mc:vNdN */
1308static int do_fsl_mc_entry(const char *filename, void *symval,
1309 char *alias)
1310{
1311 DEF_FIELD(symval, fsl_mc_device_id, vendor);
1312 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type);
1313
1314 sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type);
1315 return 1;
1316}
1317ADD_TO_DEVTABLE("fslmc", fsl_mc_device_id, do_fsl_mc_entry);
1318
1319/* Looks like: tbsvc:kSpNvNrN */
1320static int do_tbsvc_entry(const char *filename, void *symval, char *alias)
1321{
1322 DEF_FIELD(symval, tb_service_id, match_flags);
1323 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key);
1324 DEF_FIELD(symval, tb_service_id, protocol_id);
1325 DEF_FIELD(symval, tb_service_id, protocol_version);
1326 DEF_FIELD(symval, tb_service_id, protocol_revision);
1327
1328 strcpy(alias, "tbsvc:");
1329 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY)
1330 sprintf(alias + strlen(alias), "k%s", *protocol_key);
1331 else
1332 strcat(alias + strlen(alias), "k*");
1333 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id);
1334 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION,
1335 protocol_version);
1336 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION,
1337 protocol_revision);
1338
1339 add_wildcard(alias);
1340 return 1;
1341}
1342ADD_TO_DEVTABLE("tbsvc", tb_service_id, do_tbsvc_entry);
1343
1344/* Does namelen bytes of name exactly match the symbol? */
1345static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1346{
1347 if (namelen != strlen(symbol))
1348 return false;
1349
1350 return memcmp(name, symbol, namelen) == 0;
1351}
1352
1353static void do_table(void *symval, unsigned long size,
1354 unsigned long id_size,
1355 const char *device_id,
1356 void *function,
1357 struct module *mod)
1358{
1359 unsigned int i;
1360 char alias[500];
1361 int (*do_entry)(const char *, void *entry, char *alias) = function;
1362
1363 device_id_check(mod->name, device_id, size, id_size, symval);
1364 /* Leave last one: it's the terminator. */
1365 size -= id_size;
1366
1367 for (i = 0; i < size; i += id_size) {
1368 if (do_entry(mod->name, symval+i, alias)) {
1369 buf_printf(&mod->dev_table_buf,
1370 "MODULE_ALIAS(\"%s\");\n", alias);
1371 }
1372 }
1373}
1374
1375/* Create MODULE_ALIAS() statements.
1376 * At this time, we cannot write the actual output C source yet,
1377 * so we write into the mod->dev_table_buf buffer. */
1378void handle_moddevtable(struct module *mod, struct elf_info *info,
1379 Elf_Sym *sym, const char *symname)
1380{
1381 void *symval;
1382 char *zeros = NULL;
1383 const char *name, *identifier;
1384 unsigned int namelen;
1385
1386 /* We're looking for a section relative symbol */
1387 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1388 return;
1389
1390 /* We're looking for an object */
1391 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1392 return;
1393
1394 /* All our symbols are of form <prefix>__mod_<name>__<identifier>_device_table. */
1395 name = strstr(symname, "__mod_");
1396 if (!name)
1397 return;
1398 name += strlen("__mod_");
1399 namelen = strlen(name);
1400 if (namelen < strlen("_device_table"))
1401 return;
1402 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1403 return;
1404 identifier = strstr(name, "__");
1405 if (!identifier)
1406 return;
1407 namelen = identifier - name;
1408
1409 /* Handle all-NULL symbols allocated into .bss */
1410 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1411 zeros = calloc(1, sym->st_size);
1412 symval = zeros;
1413 } else {
1414 symval = (void *)info->hdr
1415 + info->sechdrs[get_secindex(info, sym)].sh_offset
1416 + sym->st_value;
1417 }
1418
1419 /* First handle the "special" cases */
1420 if (sym_is(name, namelen, "usb"))
1421 do_usb_table(symval, sym->st_size, mod);
1422 if (sym_is(name, namelen, "of"))
1423 do_of_table(symval, sym->st_size, mod);
1424 else if (sym_is(name, namelen, "pnp"))
1425 do_pnp_device_entry(symval, sym->st_size, mod);
1426 else if (sym_is(name, namelen, "pnp_card"))
1427 do_pnp_card_entries(symval, sym->st_size, mod);
1428 else {
1429 struct devtable **p;
1430 INIT_SECTION(__devtable);
1431
1432 for (p = __start___devtable; p < __stop___devtable; p++) {
1433 if (sym_is(name, namelen, (*p)->device_id)) {
1434 do_table(symval, sym->st_size, (*p)->id_size,
1435 (*p)->device_id, (*p)->function, mod);
1436 break;
1437 }
1438 }
1439 }
1440 free(zeros);
1441}
1442
1443/* Now add out buffered information to the generated C source */
1444void add_moddevtable(struct buffer *buf, struct module *mod)
1445{
1446 buf_printf(buf, "\n");
1447 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1448 free(mod->dev_table_buf.p);
1449}