projects/linux·blob v5.0 · refs

1436 lines · 40.9 KiB

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 int (*do_entry)(const char *filename, void *symval, char *alias);
51};
52
53/* Define a variable f that holds the value of field f of struct devid
54 * based at address m.
55 */
56#define DEF_FIELD(m, devid, f) \
57 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f))
58
59/* Define a variable v that holds the address of field f of struct devid
60 * based at address m. Due to the way typeof works, for a field of type
61 * T[N] the variable has type T(*)[N], _not_ T*.
62 */
63#define DEF_FIELD_ADDR_VAR(m, devid, f, v) \
64 typeof(((struct devid *)0)->f) *v = ((m) + OFF_##devid##_##f)
65
66/* Define a variable f that holds the address of field f of struct devid
67 * based at address m. Due to the way typeof works, for a field of type
68 * T[N] the variable has type T(*)[N], _not_ T*.
69 */
70#define DEF_FIELD_ADDR(m, devid, f) \
71 DEF_FIELD_ADDR_VAR(m, devid, f, f)
72
73#define ADD(str, sep, cond, field) \
74do { \
75 strcat(str, sep); \
76 if (cond) \
77 sprintf(str + strlen(str), \
78 sizeof(field) == 1 ? "%02X" : \
79 sizeof(field) == 2 ? "%04X" : \
80 sizeof(field) == 4 ? "%08X" : "", \
81 field); \
82 else \
83 sprintf(str + strlen(str), "*"); \
84} while(0)
85
86/* End in a wildcard, for future extension */
87static inline void add_wildcard(char *str)
88{
89 int len = strlen(str);
90
91 if (str[len - 1] != '*')
92 strcat(str + len, "*");
93}
94
95static inline void add_uuid(char *str, uuid_le uuid)
96{
97 int len = strlen(str);
98
99 sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
100 uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0],
101 uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6],
102 uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11],
103 uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]);
104}
105
106/**
107 * Check that sizeof(device_id type) are consistent with size of section
108 * in .o file. If in-consistent then userspace and kernel does not agree
109 * on actual size which is a bug.
110 * Also verify that the final entry in the table is all zeros.
111 * Ignore both checks if build host differ from target host and size differs.
112 **/
113static void device_id_check(const char *modname, const char *device_id,
114 unsigned long size, unsigned long id_size,
115 void *symval)
116{
117 int i;
118
119 if (size % id_size || size < id_size) {
120 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
121 "of the size of "
122 "section __mod_%s__<identifier>_device_table=%lu.\n"
123 "Fix definition of struct %s_device_id "
124 "in mod_devicetable.h\n",
125 modname, device_id, id_size, device_id, size, device_id);
126 }
127 /* Verify last one is a terminator */
128 for (i = 0; i < id_size; i++ ) {
129 if (*(uint8_t*)(symval+size-id_size+i)) {
130 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
131 "The last of %lu is:\n",
132 modname, device_id, id_size, size / id_size);
133 for (i = 0; i < id_size; i++ )
134 fprintf(stderr,"0x%02x ",
135 *(uint8_t*)(symval+size-id_size+i) );
136 fprintf(stderr,"\n");
137 fatal("%s: struct %s_device_id is not terminated "
138 "with a NULL entry!\n", modname, device_id);
139 }
140 }
141}
142
143/* USB is special because the bcdDevice can be matched against a numeric range */
144/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
145static void do_usb_entry(void *symval,
146 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
147 unsigned char range_lo, unsigned char range_hi,
148 unsigned char max, struct module *mod)
149{
150 char alias[500];
151 DEF_FIELD(symval, usb_device_id, match_flags);
152 DEF_FIELD(symval, usb_device_id, idVendor);
153 DEF_FIELD(symval, usb_device_id, idProduct);
154 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
155 DEF_FIELD(symval, usb_device_id, bDeviceClass);
156 DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
157 DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
158 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
159 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
160 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
161 DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
162
163 strcpy(alias, "usb:");
164 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
165 idVendor);
166 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
167 idProduct);
168
169 strcat(alias, "d");
170 if (bcdDevice_initial_digits)
171 sprintf(alias + strlen(alias), "%0*X",
172 bcdDevice_initial_digits, bcdDevice_initial);
173 if (range_lo == range_hi)
174 sprintf(alias + strlen(alias), "%X", range_lo);
175 else if (range_lo > 0 || range_hi < max) {
176 if (range_lo > 0x9 || range_hi < 0xA)
177 sprintf(alias + strlen(alias),
178 "[%X-%X]",
179 range_lo,
180 range_hi);
181 else {
182 sprintf(alias + strlen(alias),
183 range_lo < 0x9 ? "[%X-9" : "[%X",
184 range_lo);
185 sprintf(alias + strlen(alias),
186 range_hi > 0xA ? "A-%X]" : "%X]",
187 range_hi);
188 }
189 }
190 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
191 strcat(alias, "*");
192
193 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
194 bDeviceClass);
195 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
196 bDeviceSubClass);
197 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
198 bDeviceProtocol);
199 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
200 bInterfaceClass);
201 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
202 bInterfaceSubClass);
203 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
204 bInterfaceProtocol);
205 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
206 bInterfaceNumber);
207
208 add_wildcard(alias);
209 buf_printf(&mod->dev_table_buf,
210 "MODULE_ALIAS(\"%s\");\n", alias);
211}
212
213/* Handles increment/decrement of BCD formatted integers */
214/* Returns the previous value, so it works like i++ or i-- */
215static unsigned int incbcd(unsigned int *bcd,
216 int inc,
217 unsigned char max,
218 size_t chars)
219{
220 unsigned int init = *bcd, i, j;
221 unsigned long long c, dec = 0;
222
223 /* If bcd is not in BCD format, just increment */
224 if (max > 0x9) {
225 *bcd += inc;
226 return init;
227 }
228
229 /* Convert BCD to Decimal */
230 for (i=0 ; i < chars ; i++) {
231 c = (*bcd >> (i << 2)) & 0xf;
232 c = c > 9 ? 9 : c; /* force to bcd just in case */
233 for (j=0 ; j < i ; j++)
234 c = c * 10;
235 dec += c;
236 }
237
238 /* Do our increment/decrement */
239 dec += inc;
240 *bcd = 0;
241
242 /* Convert back to BCD */
243 for (i=0 ; i < chars ; i++) {
244 for (c=1,j=0 ; j < i ; j++)
245 c = c * 10;
246 c = (dec / c) % 10;
247 *bcd += c << (i << 2);
248 }
249 return init;
250}
251
252static void do_usb_entry_multi(void *symval, struct module *mod)
253{
254 unsigned int devlo, devhi;
255 unsigned char chi, clo, max;
256 int ndigits;
257
258 DEF_FIELD(symval, usb_device_id, match_flags);
259 DEF_FIELD(symval, usb_device_id, idVendor);
260 DEF_FIELD(symval, usb_device_id, idProduct);
261 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
262 DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
263 DEF_FIELD(symval, usb_device_id, bDeviceClass);
264 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
265
266 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
267 bcdDevice_lo : 0x0U;
268 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
269 bcdDevice_hi : ~0x0U;
270
271 /* Figure out if this entry is in bcd or hex format */
272 max = 0x9; /* Default to decimal format */
273 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
274 clo = (devlo >> (ndigits << 2)) & 0xf;
275 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
276 if (clo > max || chi > max) {
277 max = 0xf;
278 break;
279 }
280 }
281
282 /*
283 * Some modules (visor) have empty slots as placeholder for
284 * run-time specification that results in catch-all alias
285 */
286 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
287 return;
288
289 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
290 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
291 clo = devlo & 0xf;
292 chi = devhi & 0xf;
293 if (chi > max) /* If we are in bcd mode, truncate if necessary */
294 chi = max;
295 devlo >>= 4;
296 devhi >>= 4;
297
298 if (devlo == devhi || !ndigits) {
299 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
300 break;
301 }
302
303 if (clo > 0x0)
304 do_usb_entry(symval,
305 incbcd(&devlo, 1, max,
306 sizeof(bcdDevice_lo) * 2),
307 ndigits, clo, max, max, mod);
308
309 if (chi < max)
310 do_usb_entry(symval,
311 incbcd(&devhi, -1, max,
312 sizeof(bcdDevice_lo) * 2),
313 ndigits, 0x0, chi, max, mod);
314 }
315}
316
317static void do_usb_table(void *symval, unsigned long size,
318 struct module *mod)
319{
320 unsigned int i;
321 const unsigned long id_size = SIZE_usb_device_id;
322
323 device_id_check(mod->name, "usb", size, id_size, symval);
324
325 /* Leave last one: it's the terminator. */
326 size -= id_size;
327
328 for (i = 0; i < size; i += id_size)
329 do_usb_entry_multi(symval + i, mod);
330}
331
332static void do_of_entry_multi(void *symval, struct module *mod)
333{
334 char alias[500];
335 int len;
336 char *tmp;
337
338 DEF_FIELD_ADDR(symval, of_device_id, name);
339 DEF_FIELD_ADDR(symval, of_device_id, type);
340 DEF_FIELD_ADDR(symval, of_device_id, compatible);
341
342 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
343 (*type)[0] ? *type : "*");
344
345 if ((*compatible)[0])
346 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
347 *compatible);
348
349 /* Replace all whitespace with underscores */
350 for (tmp = alias; tmp && *tmp; tmp++)
351 if (isspace(*tmp))
352 *tmp = '_';
353
354 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
355 strcat(alias, "C");
356 add_wildcard(alias);
357 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
358}
359
360static void do_of_table(void *symval, unsigned long size,
361 struct module *mod)
362{
363 unsigned int i;
364 const unsigned long id_size = SIZE_of_device_id;
365
366 device_id_check(mod->name, "of", size, id_size, symval);
367
368 /* Leave last one: it's the terminator. */
369 size -= id_size;
370
371 for (i = 0; i < size; i += id_size)
372 do_of_entry_multi(symval + i, mod);
373}
374
375/* Looks like: hid:bNvNpN */
376static int do_hid_entry(const char *filename,
377 void *symval, char *alias)
378{
379 DEF_FIELD(symval, hid_device_id, bus);
380 DEF_FIELD(symval, hid_device_id, group);
381 DEF_FIELD(symval, hid_device_id, vendor);
382 DEF_FIELD(symval, hid_device_id, product);
383
384 sprintf(alias, "hid:");
385 ADD(alias, "b", bus != HID_BUS_ANY, bus);
386 ADD(alias, "g", group != HID_GROUP_ANY, group);
387 ADD(alias, "v", vendor != HID_ANY_ID, vendor);
388 ADD(alias, "p", product != HID_ANY_ID, product);
389
390 return 1;
391}
392
393/* Looks like: ieee1394:venNmoNspNverN */
394static int do_ieee1394_entry(const char *filename,
395 void *symval, char *alias)
396{
397 DEF_FIELD(symval, ieee1394_device_id, match_flags);
398 DEF_FIELD(symval, ieee1394_device_id, vendor_id);
399 DEF_FIELD(symval, ieee1394_device_id, model_id);
400 DEF_FIELD(symval, ieee1394_device_id, specifier_id);
401 DEF_FIELD(symval, ieee1394_device_id, version);
402
403 strcpy(alias, "ieee1394:");
404 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
405 vendor_id);
406 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
407 model_id);
408 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
409 specifier_id);
410 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
411 version);
412
413 add_wildcard(alias);
414 return 1;
415}
416
417/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
418static int do_pci_entry(const char *filename,
419 void *symval, char *alias)
420{
421 /* Class field can be divided into these three. */
422 unsigned char baseclass, subclass, interface,
423 baseclass_mask, subclass_mask, interface_mask;
424
425 DEF_FIELD(symval, pci_device_id, vendor);
426 DEF_FIELD(symval, pci_device_id, device);
427 DEF_FIELD(symval, pci_device_id, subvendor);
428 DEF_FIELD(symval, pci_device_id, subdevice);
429 DEF_FIELD(symval, pci_device_id, class);
430 DEF_FIELD(symval, pci_device_id, class_mask);
431
432 strcpy(alias, "pci:");
433 ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
434 ADD(alias, "d", device != PCI_ANY_ID, device);
435 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
436 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
437
438 baseclass = (class) >> 16;
439 baseclass_mask = (class_mask) >> 16;
440 subclass = (class) >> 8;
441 subclass_mask = (class_mask) >> 8;
442 interface = class;
443 interface_mask = class_mask;
444
445 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
446 || (subclass_mask != 0 && subclass_mask != 0xFF)
447 || (interface_mask != 0 && interface_mask != 0xFF)) {
448 warn("Can't handle masks in %s:%04X\n",
449 filename, class_mask);
450 return 0;
451 }
452
453 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
454 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
455 ADD(alias, "i", interface_mask == 0xFF, interface);
456 add_wildcard(alias);
457 return 1;
458}
459
460/* looks like: "ccw:tNmNdtNdmN" */
461static int do_ccw_entry(const char *filename,
462 void *symval, char *alias)
463{
464 DEF_FIELD(symval, ccw_device_id, match_flags);
465 DEF_FIELD(symval, ccw_device_id, cu_type);
466 DEF_FIELD(symval, ccw_device_id, cu_model);
467 DEF_FIELD(symval, ccw_device_id, dev_type);
468 DEF_FIELD(symval, ccw_device_id, dev_model);
469
470 strcpy(alias, "ccw:");
471 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
472 cu_type);
473 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
474 cu_model);
475 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
476 dev_type);
477 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
478 dev_model);
479 add_wildcard(alias);
480 return 1;
481}
482
483/* looks like: "ap:tN" */
484static int do_ap_entry(const char *filename,
485 void *symval, char *alias)
486{
487 DEF_FIELD(symval, ap_device_id, dev_type);
488
489 sprintf(alias, "ap:t%02X*", dev_type);
490 return 1;
491}
492
493/* looks like: "css:tN" */
494static int do_css_entry(const char *filename,
495 void *symval, char *alias)
496{
497 DEF_FIELD(symval, css_device_id, type);
498
499 sprintf(alias, "css:t%01X", type);
500 return 1;
501}
502
503/* Looks like: "serio:tyNprNidNexN" */
504static int do_serio_entry(const char *filename,
505 void *symval, char *alias)
506{
507 DEF_FIELD(symval, serio_device_id, type);
508 DEF_FIELD(symval, serio_device_id, proto);
509 DEF_FIELD(symval, serio_device_id, id);
510 DEF_FIELD(symval, serio_device_id, extra);
511
512 strcpy(alias, "serio:");
513 ADD(alias, "ty", type != SERIO_ANY, type);
514 ADD(alias, "pr", proto != SERIO_ANY, proto);
515 ADD(alias, "id", id != SERIO_ANY, id);
516 ADD(alias, "ex", extra != SERIO_ANY, extra);
517
518 add_wildcard(alias);
519 return 1;
520}
521
522/* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or
523 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if)
524 *
525 * NOTE: Each driver should use one of the following : _HID, _CIDs
526 * or _CLS. Also, bb, ss, and pp can be substituted with ??
527 * as don't care byte.
528 */
529static int do_acpi_entry(const char *filename,
530 void *symval, char *alias)
531{
532 DEF_FIELD_ADDR(symval, acpi_device_id, id);
533 DEF_FIELD_ADDR(symval, acpi_device_id, cls);
534 DEF_FIELD_ADDR(symval, acpi_device_id, cls_msk);
535
536 if (id && strlen((const char *)*id))
537 sprintf(alias, "acpi*:%s:*", *id);
538 else if (cls) {
539 int i, byte_shift, cnt = 0;
540 unsigned int msk;
541
542 sprintf(&alias[cnt], "acpi*:");
543 cnt = 6;
544 for (i = 1; i <= 3; i++) {
545 byte_shift = 8 * (3-i);
546 msk = (*cls_msk >> byte_shift) & 0xFF;
547 if (msk)
548 sprintf(&alias[cnt], "%02x",
549 (*cls >> byte_shift) & 0xFF);
550 else
551 sprintf(&alias[cnt], "??");
552 cnt += 2;
553 }
554 sprintf(&alias[cnt], ":*");
555 }
556 return 1;
557}
558
559/* looks like: "pnp:dD" */
560static void do_pnp_device_entry(void *symval, unsigned long size,
561 struct module *mod)
562{
563 const unsigned long id_size = SIZE_pnp_device_id;
564 const unsigned int count = (size / id_size)-1;
565 unsigned int i;
566
567 device_id_check(mod->name, "pnp", size, id_size, symval);
568
569 for (i = 0; i < count; i++) {
570 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id);
571 char acpi_id[sizeof(*id)];
572 int j;
573
574 buf_printf(&mod->dev_table_buf,
575 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
576
577 /* fix broken pnp bus lowercasing */
578 for (j = 0; j < sizeof(acpi_id); j++)
579 acpi_id[j] = toupper((*id)[j]);
580 buf_printf(&mod->dev_table_buf,
581 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
582 }
583}
584
585/* looks like: "pnp:dD" for every device of the card */
586static void do_pnp_card_entries(void *symval, unsigned long size,
587 struct module *mod)
588{
589 const unsigned long id_size = SIZE_pnp_card_device_id;
590 const unsigned int count = (size / id_size)-1;
591 unsigned int i;
592
593 device_id_check(mod->name, "pnp", size, id_size, symval);
594
595 for (i = 0; i < count; i++) {
596 unsigned int j;
597 DEF_FIELD_ADDR(symval + i * id_size, pnp_card_device_id, devs);
598
599 for (j = 0; j < PNP_MAX_DEVICES; j++) {
600 const char *id = (char *)(*devs)[j].id;
601 int i2, j2;
602 int dup = 0;
603
604 if (!id[0])
605 break;
606
607 /* find duplicate, already added value */
608 for (i2 = 0; i2 < i && !dup; i2++) {
609 DEF_FIELD_ADDR_VAR(symval + i2 * id_size,
610 pnp_card_device_id,
611 devs, devs_dup);
612
613 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
614 const char *id2 =
615 (char *)(*devs_dup)[j2].id;
616
617 if (!id2[0])
618 break;
619
620 if (!strcmp(id, id2)) {
621 dup = 1;
622 break;
623 }
624 }
625 }
626
627 /* add an individual alias for every device entry */
628 if (!dup) {
629 char acpi_id[PNP_ID_LEN];
630 int k;
631
632 buf_printf(&mod->dev_table_buf,
633 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
634
635 /* fix broken pnp bus lowercasing */
636 for (k = 0; k < sizeof(acpi_id); k++)
637 acpi_id[k] = toupper(id[k]);
638 buf_printf(&mod->dev_table_buf,
639 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
640 }
641 }
642 }
643}
644
645/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
646static int do_pcmcia_entry(const char *filename,
647 void *symval, char *alias)
648{
649 unsigned int i;
650 DEF_FIELD(symval, pcmcia_device_id, match_flags);
651 DEF_FIELD(symval, pcmcia_device_id, manf_id);
652 DEF_FIELD(symval, pcmcia_device_id, card_id);
653 DEF_FIELD(symval, pcmcia_device_id, func_id);
654 DEF_FIELD(symval, pcmcia_device_id, function);
655 DEF_FIELD(symval, pcmcia_device_id, device_no);
656 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
657
658 for (i=0; i<4; i++) {
659 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]);
660 }
661
662 strcpy(alias, "pcmcia:");
663 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
664 manf_id);
665 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
666 card_id);
667 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
668 func_id);
669 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
670 function);
671 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
672 device_no);
673 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]);
674 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]);
675 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]);
676 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]);
677
678 add_wildcard(alias);
679 return 1;
680}
681
682static int do_vio_entry(const char *filename, void *symval,
683 char *alias)
684{
685 char *tmp;
686 DEF_FIELD_ADDR(symval, vio_device_id, type);
687 DEF_FIELD_ADDR(symval, vio_device_id, compat);
688
689 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
690 (*compat)[0] ? *compat : "*");
691
692 /* Replace all whitespace with underscores */
693 for (tmp = alias; tmp && *tmp; tmp++)
694 if (isspace (*tmp))
695 *tmp = '_';
696
697 add_wildcard(alias);
698 return 1;
699}
700
701#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
702
703static void do_input(char *alias,
704 kernel_ulong_t *arr, unsigned int min, unsigned int max)
705{
706 unsigned int i;
707
708 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++)
709 arr[i] = TO_NATIVE(arr[i]);
710 for (i = min; i < max; i++)
711 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
712 sprintf(alias + strlen(alias), "%X,*", i);
713}
714
715/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
716static int do_input_entry(const char *filename, void *symval,
717 char *alias)
718{
719 DEF_FIELD(symval, input_device_id, flags);
720 DEF_FIELD(symval, input_device_id, bustype);
721 DEF_FIELD(symval, input_device_id, vendor);
722 DEF_FIELD(symval, input_device_id, product);
723 DEF_FIELD(symval, input_device_id, version);
724 DEF_FIELD_ADDR(symval, input_device_id, evbit);
725 DEF_FIELD_ADDR(symval, input_device_id, keybit);
726 DEF_FIELD_ADDR(symval, input_device_id, relbit);
727 DEF_FIELD_ADDR(symval, input_device_id, absbit);
728 DEF_FIELD_ADDR(symval, input_device_id, mscbit);
729 DEF_FIELD_ADDR(symval, input_device_id, ledbit);
730 DEF_FIELD_ADDR(symval, input_device_id, sndbit);
731 DEF_FIELD_ADDR(symval, input_device_id, ffbit);
732 DEF_FIELD_ADDR(symval, input_device_id, swbit);
733
734 sprintf(alias, "input:");
735
736 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
737 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
738 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
739 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
740
741 sprintf(alias + strlen(alias), "-e*");
742 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
743 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
744 sprintf(alias + strlen(alias), "k*");
745 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
746 do_input(alias, *keybit,
747 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
748 INPUT_DEVICE_ID_KEY_MAX);
749 sprintf(alias + strlen(alias), "r*");
750 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
751 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
752 sprintf(alias + strlen(alias), "a*");
753 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
754 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
755 sprintf(alias + strlen(alias), "m*");
756 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
757 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
758 sprintf(alias + strlen(alias), "l*");
759 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
760 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
761 sprintf(alias + strlen(alias), "s*");
762 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
763 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
764 sprintf(alias + strlen(alias), "f*");
765 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
766 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
767 sprintf(alias + strlen(alias), "w*");
768 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
769 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
770 return 1;
771}
772
773static int do_eisa_entry(const char *filename, void *symval,
774 char *alias)
775{
776 DEF_FIELD_ADDR(symval, eisa_device_id, sig);
777 if (sig[0])
778 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig);
779 else
780 strcat(alias, "*");
781 return 1;
782}
783
784/* Looks like: parisc:tNhvNrevNsvN */
785static int do_parisc_entry(const char *filename, void *symval,
786 char *alias)
787{
788 DEF_FIELD(symval, parisc_device_id, hw_type);
789 DEF_FIELD(symval, parisc_device_id, hversion);
790 DEF_FIELD(symval, parisc_device_id, hversion_rev);
791 DEF_FIELD(symval, parisc_device_id, sversion);
792
793 strcpy(alias, "parisc:");
794 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
795 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
796 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
797 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
798
799 add_wildcard(alias);
800 return 1;
801}
802
803/* Looks like: sdio:cNvNdN. */
804static int do_sdio_entry(const char *filename,
805 void *symval, char *alias)
806{
807 DEF_FIELD(symval, sdio_device_id, class);
808 DEF_FIELD(symval, sdio_device_id, vendor);
809 DEF_FIELD(symval, sdio_device_id, device);
810
811 strcpy(alias, "sdio:");
812 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
813 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
814 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
815 add_wildcard(alias);
816 return 1;
817}
818
819/* Looks like: ssb:vNidNrevN. */
820static int do_ssb_entry(const char *filename,
821 void *symval, char *alias)
822{
823 DEF_FIELD(symval, ssb_device_id, vendor);
824 DEF_FIELD(symval, ssb_device_id, coreid);
825 DEF_FIELD(symval, ssb_device_id, revision);
826
827 strcpy(alias, "ssb:");
828 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
829 ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
830 ADD(alias, "rev", revision != SSB_ANY_REV, revision);
831 add_wildcard(alias);
832 return 1;
833}
834
835/* Looks like: bcma:mNidNrevNclN. */
836static int do_bcma_entry(const char *filename,
837 void *symval, char *alias)
838{
839 DEF_FIELD(symval, bcma_device_id, manuf);
840 DEF_FIELD(symval, bcma_device_id, id);
841 DEF_FIELD(symval, bcma_device_id, rev);
842 DEF_FIELD(symval, bcma_device_id, class);
843
844 strcpy(alias, "bcma:");
845 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
846 ADD(alias, "id", id != BCMA_ANY_ID, id);
847 ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
848 ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
849 add_wildcard(alias);
850 return 1;
851}
852
853/* Looks like: virtio:dNvN */
854static int do_virtio_entry(const char *filename, void *symval,
855 char *alias)
856{
857 DEF_FIELD(symval, virtio_device_id, device);
858 DEF_FIELD(symval, virtio_device_id, vendor);
859
860 strcpy(alias, "virtio:");
861 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
862 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
863
864 add_wildcard(alias);
865 return 1;
866}
867
868/*
869 * Looks like: vmbus:guid
870 * Each byte of the guid will be represented by two hex characters
871 * in the name.
872 */
873
874static int do_vmbus_entry(const char *filename, void *symval,
875 char *alias)
876{
877 int i;
878 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
879 char guid_name[(sizeof(*guid) + 1) * 2];
880
881 for (i = 0; i < (sizeof(*guid) * 2); i += 2)
882 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2]));
883
884 strcpy(alias, "vmbus:");
885 strcat(alias, guid_name);
886
887 return 1;
888}
889
890/* Looks like: rpmsg:S */
891static int do_rpmsg_entry(const char *filename, void *symval,
892 char *alias)
893{
894 DEF_FIELD_ADDR(symval, rpmsg_device_id, name);
895 sprintf(alias, RPMSG_DEVICE_MODALIAS_FMT, *name);
896
897 return 1;
898}
899
900/* Looks like: i2c:S */
901static int do_i2c_entry(const char *filename, void *symval,
902 char *alias)
903{
904 DEF_FIELD_ADDR(symval, i2c_device_id, name);
905 sprintf(alias, I2C_MODULE_PREFIX "%s", *name);
906
907 return 1;
908}
909
910/* Looks like: spi:S */
911static int do_spi_entry(const char *filename, void *symval,
912 char *alias)
913{
914 DEF_FIELD_ADDR(symval, spi_device_id, name);
915 sprintf(alias, SPI_MODULE_PREFIX "%s", *name);
916
917 return 1;
918}
919
920static const struct dmifield {
921 const char *prefix;
922 int field;
923} dmi_fields[] = {
924 { "bvn", DMI_BIOS_VENDOR },
925 { "bvr", DMI_BIOS_VERSION },
926 { "bd", DMI_BIOS_DATE },
927 { "svn", DMI_SYS_VENDOR },
928 { "pn", DMI_PRODUCT_NAME },
929 { "pvr", DMI_PRODUCT_VERSION },
930 { "rvn", DMI_BOARD_VENDOR },
931 { "rn", DMI_BOARD_NAME },
932 { "rvr", DMI_BOARD_VERSION },
933 { "cvn", DMI_CHASSIS_VENDOR },
934 { "ct", DMI_CHASSIS_TYPE },
935 { "cvr", DMI_CHASSIS_VERSION },
936 { NULL, DMI_NONE }
937};
938
939static void dmi_ascii_filter(char *d, const char *s)
940{
941 /* Filter out characters we don't want to see in the modalias string */
942 for (; *s; s++)
943 if (*s > ' ' && *s < 127 && *s != ':')
944 *(d++) = *s;
945
946 *d = 0;
947}
948
949
950static int do_dmi_entry(const char *filename, void *symval,
951 char *alias)
952{
953 int i, j;
954 DEF_FIELD_ADDR(symval, dmi_system_id, matches);
955 sprintf(alias, "dmi*");
956
957 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
958 for (j = 0; j < 4; j++) {
959 if ((*matches)[j].slot &&
960 (*matches)[j].slot == dmi_fields[i].field) {
961 sprintf(alias + strlen(alias), ":%s*",
962 dmi_fields[i].prefix);
963 dmi_ascii_filter(alias + strlen(alias),
964 (*matches)[j].substr);
965 strcat(alias, "*");
966 }
967 }
968 }
969
970 strcat(alias, ":");
971 return 1;
972}
973
974static int do_platform_entry(const char *filename,
975 void *symval, char *alias)
976{
977 DEF_FIELD_ADDR(symval, platform_device_id, name);
978 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name);
979 return 1;
980}
981
982static int do_mdio_entry(const char *filename,
983 void *symval, char *alias)
984{
985 int i;
986 DEF_FIELD(symval, mdio_device_id, phy_id);
987 DEF_FIELD(symval, mdio_device_id, phy_id_mask);
988
989 alias += sprintf(alias, MDIO_MODULE_PREFIX);
990
991 for (i = 0; i < 32; i++) {
992 if (!((phy_id_mask >> (31-i)) & 1))
993 *(alias++) = '?';
994 else if ((phy_id >> (31-i)) & 1)
995 *(alias++) = '1';
996 else
997 *(alias++) = '0';
998 }
999
1000 /* Terminate the string */
1001 *alias = 0;
1002
1003 return 1;
1004}
1005
1006/* Looks like: zorro:iN. */
1007static int do_zorro_entry(const char *filename, void *symval,
1008 char *alias)
1009{
1010 DEF_FIELD(symval, zorro_device_id, id);
1011 strcpy(alias, "zorro:");
1012 ADD(alias, "i", id != ZORRO_WILDCARD, id);
1013 return 1;
1014}
1015
1016/* looks like: "pnp:dD" */
1017static int do_isapnp_entry(const char *filename,
1018 void *symval, char *alias)
1019{
1020 DEF_FIELD(symval, isapnp_device_id, vendor);
1021 DEF_FIELD(symval, isapnp_device_id, function);
1022 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
1023 'A' + ((vendor >> 2) & 0x3f) - 1,
1024 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
1025 'A' + ((vendor >> 8) & 0x1f) - 1,
1026 (function >> 4) & 0x0f, function & 0x0f,
1027 (function >> 12) & 0x0f, (function >> 8) & 0x0f);
1028 return 1;
1029}
1030
1031/* Looks like: "ipack:fNvNdN". */
1032static int do_ipack_entry(const char *filename,
1033 void *symval, char *alias)
1034{
1035 DEF_FIELD(symval, ipack_device_id, format);
1036 DEF_FIELD(symval, ipack_device_id, vendor);
1037 DEF_FIELD(symval, ipack_device_id, device);
1038 strcpy(alias, "ipack:");
1039 ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
1040 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
1041 ADD(alias, "d", device != IPACK_ANY_ID, device);
1042 add_wildcard(alias);
1043 return 1;
1044}
1045
1046/*
1047 * Append a match expression for a single masked hex digit.
1048 * outp points to a pointer to the character at which to append.
1049 * *outp is updated on return to point just after the appended text,
1050 * to facilitate further appending.
1051 */
1052static void append_nibble_mask(char **outp,
1053 unsigned int nibble, unsigned int mask)
1054{
1055 char *p = *outp;
1056 unsigned int i;
1057
1058 switch (mask) {
1059 case 0:
1060 *p++ = '?';
1061 break;
1062
1063 case 0xf:
1064 p += sprintf(p, "%X", nibble);
1065 break;
1066
1067 default:
1068 /*
1069 * Dumbly emit a match pattern for all possible matching
1070 * digits. This could be improved in some cases using ranges,
1071 * but it has the advantage of being trivially correct, and is
1072 * often optimal.
1073 */
1074 *p++ = '[';
1075 for (i = 0; i < 0x10; i++)
1076 if ((i & mask) == nibble)
1077 p += sprintf(p, "%X", i);
1078 *p++ = ']';
1079 }
1080
1081 /* Ensure that the string remains NUL-terminated: */
1082 *p = '\0';
1083
1084 /* Advance the caller's end-of-string pointer: */
1085 *outp = p;
1086}
1087
1088/*
1089 * looks like: "amba:dN"
1090 *
1091 * N is exactly 8 digits, where each is an upper-case hex digit, or
1092 * a ? or [] pattern matching exactly one digit.
1093 */
1094static int do_amba_entry(const char *filename,
1095 void *symval, char *alias)
1096{
1097 unsigned int digit;
1098 char *p = alias;
1099 DEF_FIELD(symval, amba_id, id);
1100 DEF_FIELD(symval, amba_id, mask);
1101
1102 if ((id & mask) != id)
1103 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1104 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1105 filename, id, mask);
1106
1107 p += sprintf(alias, "amba:d");
1108 for (digit = 0; digit < 8; digit++)
1109 append_nibble_mask(&p,
1110 (id >> (4 * (7 - digit))) & 0xf,
1111 (mask >> (4 * (7 - digit))) & 0xf);
1112
1113 return 1;
1114}
1115
1116/*
1117 * looks like: "mipscdmm:tN"
1118 *
1119 * N is exactly 2 digits, where each is an upper-case hex digit, or
1120 * a ? or [] pattern matching exactly one digit.
1121 */
1122static int do_mips_cdmm_entry(const char *filename,
1123 void *symval, char *alias)
1124{
1125 DEF_FIELD(symval, mips_cdmm_device_id, type);
1126
1127 sprintf(alias, "mipscdmm:t%02X*", type);
1128 return 1;
1129}
1130
1131/* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
1132 * All fields are numbers. It would be nicer to use strings for vendor
1133 * and feature, but getting those out of the build system here is too
1134 * complicated.
1135 */
1136
1137static int do_x86cpu_entry(const char *filename, void *symval,
1138 char *alias)
1139{
1140 DEF_FIELD(symval, x86_cpu_id, feature);
1141 DEF_FIELD(symval, x86_cpu_id, family);
1142 DEF_FIELD(symval, x86_cpu_id, model);
1143 DEF_FIELD(symval, x86_cpu_id, vendor);
1144
1145 strcpy(alias, "cpu:type:x86,");
1146 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
1147 ADD(alias, "fam", family != X86_FAMILY_ANY, family);
1148 ADD(alias, "mod", model != X86_MODEL_ANY, model);
1149 strcat(alias, ":feature:*");
1150 if (feature != X86_FEATURE_ANY)
1151 sprintf(alias + strlen(alias), "%04X*", feature);
1152 return 1;
1153}
1154
1155/* LOOKS like cpu:type:*:feature:*FEAT* */
1156static int do_cpu_entry(const char *filename, void *symval, char *alias)
1157{
1158 DEF_FIELD(symval, cpu_feature, feature);
1159
1160 sprintf(alias, "cpu:type:*:feature:*%04X*", feature);
1161 return 1;
1162}
1163
1164/* Looks like: mei:S:uuid:N:* */
1165static int do_mei_entry(const char *filename, void *symval,
1166 char *alias)
1167{
1168 DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
1169 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid);
1170 DEF_FIELD(symval, mei_cl_device_id, version);
1171
1172 sprintf(alias, MEI_CL_MODULE_PREFIX);
1173 sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*");
1174 add_uuid(alias, *uuid);
1175 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version);
1176
1177 strcat(alias, ":*");
1178
1179 return 1;
1180}
1181
1182/* Looks like: rapidio:vNdNavNadN */
1183static int do_rio_entry(const char *filename,
1184 void *symval, char *alias)
1185{
1186 DEF_FIELD(symval, rio_device_id, did);
1187 DEF_FIELD(symval, rio_device_id, vid);
1188 DEF_FIELD(symval, rio_device_id, asm_did);
1189 DEF_FIELD(symval, rio_device_id, asm_vid);
1190
1191 strcpy(alias, "rapidio:");
1192 ADD(alias, "v", vid != RIO_ANY_ID, vid);
1193 ADD(alias, "d", did != RIO_ANY_ID, did);
1194 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
1195 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
1196
1197 add_wildcard(alias);
1198 return 1;
1199}
1200
1201/* Looks like: ulpi:vNpN */
1202static int do_ulpi_entry(const char *filename, void *symval,
1203 char *alias)
1204{
1205 DEF_FIELD(symval, ulpi_device_id, vendor);
1206 DEF_FIELD(symval, ulpi_device_id, product);
1207
1208 sprintf(alias, "ulpi:v%04xp%04x", vendor, product);
1209
1210 return 1;
1211}
1212
1213/* Looks like: hdaudio:vNrNaN */
1214static int do_hda_entry(const char *filename, void *symval, char *alias)
1215{
1216 DEF_FIELD(symval, hda_device_id, vendor_id);
1217 DEF_FIELD(symval, hda_device_id, rev_id);
1218 DEF_FIELD(symval, hda_device_id, api_version);
1219
1220 strcpy(alias, "hdaudio:");
1221 ADD(alias, "v", vendor_id != 0, vendor_id);
1222 ADD(alias, "r", rev_id != 0, rev_id);
1223 ADD(alias, "a", api_version != 0, api_version);
1224
1225 add_wildcard(alias);
1226 return 1;
1227}
1228
1229/* Looks like: sdw:mNpN */
1230static int do_sdw_entry(const char *filename, void *symval, char *alias)
1231{
1232 DEF_FIELD(symval, sdw_device_id, mfg_id);
1233 DEF_FIELD(symval, sdw_device_id, part_id);
1234
1235 strcpy(alias, "sdw:");
1236 ADD(alias, "m", mfg_id != 0, mfg_id);
1237 ADD(alias, "p", part_id != 0, part_id);
1238
1239 add_wildcard(alias);
1240 return 1;
1241}
1242
1243/* Looks like: fsl-mc:vNdN */
1244static int do_fsl_mc_entry(const char *filename, void *symval,
1245 char *alias)
1246{
1247 DEF_FIELD(symval, fsl_mc_device_id, vendor);
1248 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type);
1249
1250 sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type);
1251 return 1;
1252}
1253
1254/* Looks like: tbsvc:kSpNvNrN */
1255static int do_tbsvc_entry(const char *filename, void *symval, char *alias)
1256{
1257 DEF_FIELD(symval, tb_service_id, match_flags);
1258 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key);
1259 DEF_FIELD(symval, tb_service_id, protocol_id);
1260 DEF_FIELD(symval, tb_service_id, protocol_version);
1261 DEF_FIELD(symval, tb_service_id, protocol_revision);
1262
1263 strcpy(alias, "tbsvc:");
1264 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY)
1265 sprintf(alias + strlen(alias), "k%s", *protocol_key);
1266 else
1267 strcat(alias + strlen(alias), "k*");
1268 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id);
1269 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION,
1270 protocol_version);
1271 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION,
1272 protocol_revision);
1273
1274 add_wildcard(alias);
1275 return 1;
1276}
1277
1278/* Looks like: typec:idNmN */
1279static int do_typec_entry(const char *filename, void *symval, char *alias)
1280{
1281 DEF_FIELD(symval, typec_device_id, svid);
1282 DEF_FIELD(symval, typec_device_id, mode);
1283
1284 sprintf(alias, "typec:id%04X", svid);
1285 ADD(alias, "m", mode != TYPEC_ANY_MODE, mode);
1286
1287 return 1;
1288}
1289
1290/* Does namelen bytes of name exactly match the symbol? */
1291static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1292{
1293 if (namelen != strlen(symbol))
1294 return false;
1295
1296 return memcmp(name, symbol, namelen) == 0;
1297}
1298
1299static void do_table(void *symval, unsigned long size,
1300 unsigned long id_size,
1301 const char *device_id,
1302 int (*do_entry)(const char *filename, void *symval, char *alias),
1303 struct module *mod)
1304{
1305 unsigned int i;
1306 char alias[500];
1307
1308 device_id_check(mod->name, device_id, size, id_size, symval);
1309 /* Leave last one: it's the terminator. */
1310 size -= id_size;
1311
1312 for (i = 0; i < size; i += id_size) {
1313 if (do_entry(mod->name, symval+i, alias)) {
1314 buf_printf(&mod->dev_table_buf,
1315 "MODULE_ALIAS(\"%s\");\n", alias);
1316 }
1317 }
1318}
1319
1320static const struct devtable devtable[] = {
1321 {"hid", SIZE_hid_device_id, do_hid_entry},
1322 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry},
1323 {"pci", SIZE_pci_device_id, do_pci_entry},
1324 {"ccw", SIZE_ccw_device_id, do_ccw_entry},
1325 {"ap", SIZE_ap_device_id, do_ap_entry},
1326 {"css", SIZE_css_device_id, do_css_entry},
1327 {"serio", SIZE_serio_device_id, do_serio_entry},
1328 {"acpi", SIZE_acpi_device_id, do_acpi_entry},
1329 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry},
1330 {"vio", SIZE_vio_device_id, do_vio_entry},
1331 {"input", SIZE_input_device_id, do_input_entry},
1332 {"eisa", SIZE_eisa_device_id, do_eisa_entry},
1333 {"parisc", SIZE_parisc_device_id, do_parisc_entry},
1334 {"sdio", SIZE_sdio_device_id, do_sdio_entry},
1335 {"ssb", SIZE_ssb_device_id, do_ssb_entry},
1336 {"bcma", SIZE_bcma_device_id, do_bcma_entry},
1337 {"virtio", SIZE_virtio_device_id, do_virtio_entry},
1338 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry},
1339 {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry},
1340 {"i2c", SIZE_i2c_device_id, do_i2c_entry},
1341 {"spi", SIZE_spi_device_id, do_spi_entry},
1342 {"dmi", SIZE_dmi_system_id, do_dmi_entry},
1343 {"platform", SIZE_platform_device_id, do_platform_entry},
1344 {"mdio", SIZE_mdio_device_id, do_mdio_entry},
1345 {"zorro", SIZE_zorro_device_id, do_zorro_entry},
1346 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry},
1347 {"ipack", SIZE_ipack_device_id, do_ipack_entry},
1348 {"amba", SIZE_amba_id, do_amba_entry},
1349 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry},
1350 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry},
1351 {"cpu", SIZE_cpu_feature, do_cpu_entry},
1352 {"mei", SIZE_mei_cl_device_id, do_mei_entry},
1353 {"rapidio", SIZE_rio_device_id, do_rio_entry},
1354 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry},
1355 {"hdaudio", SIZE_hda_device_id, do_hda_entry},
1356 {"sdw", SIZE_sdw_device_id, do_sdw_entry},
1357 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry},
1358 {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry},
1359 {"typec", SIZE_typec_device_id, do_typec_entry},
1360};
1361
1362/* Create MODULE_ALIAS() statements.
1363 * At this time, we cannot write the actual output C source yet,
1364 * so we write into the mod->dev_table_buf buffer. */
1365void handle_moddevtable(struct module *mod, struct elf_info *info,
1366 Elf_Sym *sym, const char *symname)
1367{
1368 void *symval;
1369 char *zeros = NULL;
1370 const char *name, *identifier;
1371 unsigned int namelen;
1372
1373 /* We're looking for a section relative symbol */
1374 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1375 return;
1376
1377 /* We're looking for an object */
1378 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1379 return;
1380
1381 /* All our symbols are of form __mod_<name>__<identifier>_device_table. */
1382 if (strncmp(symname, "__mod_", strlen("__mod_")))
1383 return;
1384 name = symname + strlen("__mod_");
1385 namelen = strlen(name);
1386 if (namelen < strlen("_device_table"))
1387 return;
1388 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1389 return;
1390 identifier = strstr(name, "__");
1391 if (!identifier)
1392 return;
1393 namelen = identifier - name;
1394
1395 /* Handle all-NULL symbols allocated into .bss */
1396 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1397 zeros = calloc(1, sym->st_size);
1398 symval = zeros;
1399 } else {
1400 symval = (void *)info->hdr
1401 + info->sechdrs[get_secindex(info, sym)].sh_offset
1402 + sym->st_value;
1403 }
1404
1405 /* First handle the "special" cases */
1406 if (sym_is(name, namelen, "usb"))
1407 do_usb_table(symval, sym->st_size, mod);
1408 if (sym_is(name, namelen, "of"))
1409 do_of_table(symval, sym->st_size, mod);
1410 else if (sym_is(name, namelen, "pnp"))
1411 do_pnp_device_entry(symval, sym->st_size, mod);
1412 else if (sym_is(name, namelen, "pnp_card"))
1413 do_pnp_card_entries(symval, sym->st_size, mod);
1414 else {
1415 int i;
1416
1417 for (i = 0; i < ARRAY_SIZE(devtable); i++) {
1418 const struct devtable *p = &devtable[i];
1419
1420 if (sym_is(name, namelen, p->device_id)) {
1421 do_table(symval, sym->st_size, p->id_size,
1422 p->device_id, p->do_entry, mod);
1423 break;
1424 }
1425 }
1426 }
1427 free(zeros);
1428}
1429
1430/* Now add out buffered information to the generated C source */
1431void add_moddevtable(struct buffer *buf, struct module *mod)
1432{
1433 buf_printf(buf, "\n");
1434 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1435 free(mod->dev_table_buf.p);
1436}