projects/linux·blob v5.1 · refs

1481 lines · 42.1 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;
40typedef struct {
41 __u8 b[16];
42} uuid_t;
43#define UUID_STRING_LEN 36
44
45/* Big exception to the "don't include kernel headers into userspace, which
46 * even potentially has different endianness and word sizes, since
47 * we handle those differences explicitly below */
48#include "../../include/linux/mod_devicetable.h"
49
50/* This array collects all instances that use the generic do_table */
51struct devtable {
52 const char *device_id; /* name of table, __mod_<name>__*_device_table. */
53 unsigned long id_size;
54 int (*do_entry)(const char *filename, void *symval, char *alias);
55};
56
57/* Size of alias provided to do_entry functions */
58#define ALIAS_SIZE 500
59
60/* Define a variable f that holds the value of field f of struct devid
61 * based at address m.
62 */
63#define DEF_FIELD(m, devid, f) \
64 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f))
65
66/* Define a variable v 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_VAR(m, devid, f, v) \
71 typeof(((struct devid *)0)->f) *v = ((m) + OFF_##devid##_##f)
72
73/* Define a variable f that holds the address of field f of struct devid
74 * based at address m. Due to the way typeof works, for a field of type
75 * T[N] the variable has type T(*)[N], _not_ T*.
76 */
77#define DEF_FIELD_ADDR(m, devid, f) \
78 DEF_FIELD_ADDR_VAR(m, devid, f, f)
79
80#define ADD(str, sep, cond, field) \
81do { \
82 strcat(str, sep); \
83 if (cond) \
84 sprintf(str + strlen(str), \
85 sizeof(field) == 1 ? "%02X" : \
86 sizeof(field) == 2 ? "%04X" : \
87 sizeof(field) == 4 ? "%08X" : "", \
88 field); \
89 else \
90 sprintf(str + strlen(str), "*"); \
91} while(0)
92
93/* End in a wildcard, for future extension */
94static inline void add_wildcard(char *str)
95{
96 int len = strlen(str);
97
98 if (str[len - 1] != '*')
99 strcat(str + len, "*");
100}
101
102static inline void add_uuid(char *str, uuid_le uuid)
103{
104 int len = strlen(str);
105
106 sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
107 uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0],
108 uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6],
109 uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11],
110 uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]);
111}
112
113/**
114 * Check that sizeof(device_id type) are consistent with size of section
115 * in .o file. If in-consistent then userspace and kernel does not agree
116 * on actual size which is a bug.
117 * Also verify that the final entry in the table is all zeros.
118 * Ignore both checks if build host differ from target host and size differs.
119 **/
120static void device_id_check(const char *modname, const char *device_id,
121 unsigned long size, unsigned long id_size,
122 void *symval)
123{
124 int i;
125
126 if (size % id_size || size < id_size) {
127 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
128 "of the size of "
129 "section __mod_%s__<identifier>_device_table=%lu.\n"
130 "Fix definition of struct %s_device_id "
131 "in mod_devicetable.h\n",
132 modname, device_id, id_size, device_id, size, device_id);
133 }
134 /* Verify last one is a terminator */
135 for (i = 0; i < id_size; i++ ) {
136 if (*(uint8_t*)(symval+size-id_size+i)) {
137 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
138 "The last of %lu is:\n",
139 modname, device_id, id_size, size / id_size);
140 for (i = 0; i < id_size; i++ )
141 fprintf(stderr,"0x%02x ",
142 *(uint8_t*)(symval+size-id_size+i) );
143 fprintf(stderr,"\n");
144 fatal("%s: struct %s_device_id is not terminated "
145 "with a NULL entry!\n", modname, device_id);
146 }
147 }
148}
149
150/* USB is special because the bcdDevice can be matched against a numeric range */
151/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
152static void do_usb_entry(void *symval,
153 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
154 unsigned char range_lo, unsigned char range_hi,
155 unsigned char max, struct module *mod)
156{
157 char alias[500];
158 DEF_FIELD(symval, usb_device_id, match_flags);
159 DEF_FIELD(symval, usb_device_id, idVendor);
160 DEF_FIELD(symval, usb_device_id, idProduct);
161 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
162 DEF_FIELD(symval, usb_device_id, bDeviceClass);
163 DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
164 DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
165 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
166 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
167 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
168 DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
169
170 strcpy(alias, "usb:");
171 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
172 idVendor);
173 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
174 idProduct);
175
176 strcat(alias, "d");
177 if (bcdDevice_initial_digits)
178 sprintf(alias + strlen(alias), "%0*X",
179 bcdDevice_initial_digits, bcdDevice_initial);
180 if (range_lo == range_hi)
181 sprintf(alias + strlen(alias), "%X", range_lo);
182 else if (range_lo > 0 || range_hi < max) {
183 if (range_lo > 0x9 || range_hi < 0xA)
184 sprintf(alias + strlen(alias),
185 "[%X-%X]",
186 range_lo,
187 range_hi);
188 else {
189 sprintf(alias + strlen(alias),
190 range_lo < 0x9 ? "[%X-9" : "[%X",
191 range_lo);
192 sprintf(alias + strlen(alias),
193 range_hi > 0xA ? "A-%X]" : "%X]",
194 range_hi);
195 }
196 }
197 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
198 strcat(alias, "*");
199
200 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
201 bDeviceClass);
202 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
203 bDeviceSubClass);
204 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
205 bDeviceProtocol);
206 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
207 bInterfaceClass);
208 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
209 bInterfaceSubClass);
210 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
211 bInterfaceProtocol);
212 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
213 bInterfaceNumber);
214
215 add_wildcard(alias);
216 buf_printf(&mod->dev_table_buf,
217 "MODULE_ALIAS(\"%s\");\n", alias);
218}
219
220/* Handles increment/decrement of BCD formatted integers */
221/* Returns the previous value, so it works like i++ or i-- */
222static unsigned int incbcd(unsigned int *bcd,
223 int inc,
224 unsigned char max,
225 size_t chars)
226{
227 unsigned int init = *bcd, i, j;
228 unsigned long long c, dec = 0;
229
230 /* If bcd is not in BCD format, just increment */
231 if (max > 0x9) {
232 *bcd += inc;
233 return init;
234 }
235
236 /* Convert BCD to Decimal */
237 for (i=0 ; i < chars ; i++) {
238 c = (*bcd >> (i << 2)) & 0xf;
239 c = c > 9 ? 9 : c; /* force to bcd just in case */
240 for (j=0 ; j < i ; j++)
241 c = c * 10;
242 dec += c;
243 }
244
245 /* Do our increment/decrement */
246 dec += inc;
247 *bcd = 0;
248
249 /* Convert back to BCD */
250 for (i=0 ; i < chars ; i++) {
251 for (c=1,j=0 ; j < i ; j++)
252 c = c * 10;
253 c = (dec / c) % 10;
254 *bcd += c << (i << 2);
255 }
256 return init;
257}
258
259static void do_usb_entry_multi(void *symval, struct module *mod)
260{
261 unsigned int devlo, devhi;
262 unsigned char chi, clo, max;
263 int ndigits;
264
265 DEF_FIELD(symval, usb_device_id, match_flags);
266 DEF_FIELD(symval, usb_device_id, idVendor);
267 DEF_FIELD(symval, usb_device_id, idProduct);
268 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
269 DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
270 DEF_FIELD(symval, usb_device_id, bDeviceClass);
271 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
272
273 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
274 bcdDevice_lo : 0x0U;
275 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
276 bcdDevice_hi : ~0x0U;
277
278 /* Figure out if this entry is in bcd or hex format */
279 max = 0x9; /* Default to decimal format */
280 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
281 clo = (devlo >> (ndigits << 2)) & 0xf;
282 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
283 if (clo > max || chi > max) {
284 max = 0xf;
285 break;
286 }
287 }
288
289 /*
290 * Some modules (visor) have empty slots as placeholder for
291 * run-time specification that results in catch-all alias
292 */
293 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
294 return;
295
296 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
297 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
298 clo = devlo & 0xf;
299 chi = devhi & 0xf;
300 if (chi > max) /* If we are in bcd mode, truncate if necessary */
301 chi = max;
302 devlo >>= 4;
303 devhi >>= 4;
304
305 if (devlo == devhi || !ndigits) {
306 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
307 break;
308 }
309
310 if (clo > 0x0)
311 do_usb_entry(symval,
312 incbcd(&devlo, 1, max,
313 sizeof(bcdDevice_lo) * 2),
314 ndigits, clo, max, max, mod);
315
316 if (chi < max)
317 do_usb_entry(symval,
318 incbcd(&devhi, -1, max,
319 sizeof(bcdDevice_lo) * 2),
320 ndigits, 0x0, chi, max, mod);
321 }
322}
323
324static void do_usb_table(void *symval, unsigned long size,
325 struct module *mod)
326{
327 unsigned int i;
328 const unsigned long id_size = SIZE_usb_device_id;
329
330 device_id_check(mod->name, "usb", size, id_size, symval);
331
332 /* Leave last one: it's the terminator. */
333 size -= id_size;
334
335 for (i = 0; i < size; i += id_size)
336 do_usb_entry_multi(symval + i, mod);
337}
338
339static void do_of_entry_multi(void *symval, struct module *mod)
340{
341 char alias[500];
342 int len;
343 char *tmp;
344
345 DEF_FIELD_ADDR(symval, of_device_id, name);
346 DEF_FIELD_ADDR(symval, of_device_id, type);
347 DEF_FIELD_ADDR(symval, of_device_id, compatible);
348
349 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
350 (*type)[0] ? *type : "*");
351
352 if ((*compatible)[0])
353 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
354 *compatible);
355
356 /* Replace all whitespace with underscores */
357 for (tmp = alias; tmp && *tmp; tmp++)
358 if (isspace(*tmp))
359 *tmp = '_';
360
361 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
362 strcat(alias, "C");
363 add_wildcard(alias);
364 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
365}
366
367static void do_of_table(void *symval, unsigned long size,
368 struct module *mod)
369{
370 unsigned int i;
371 const unsigned long id_size = SIZE_of_device_id;
372
373 device_id_check(mod->name, "of", size, id_size, symval);
374
375 /* Leave last one: it's the terminator. */
376 size -= id_size;
377
378 for (i = 0; i < size; i += id_size)
379 do_of_entry_multi(symval + i, mod);
380}
381
382/* Looks like: hid:bNvNpN */
383static int do_hid_entry(const char *filename,
384 void *symval, char *alias)
385{
386 DEF_FIELD(symval, hid_device_id, bus);
387 DEF_FIELD(symval, hid_device_id, group);
388 DEF_FIELD(symval, hid_device_id, vendor);
389 DEF_FIELD(symval, hid_device_id, product);
390
391 sprintf(alias, "hid:");
392 ADD(alias, "b", bus != HID_BUS_ANY, bus);
393 ADD(alias, "g", group != HID_GROUP_ANY, group);
394 ADD(alias, "v", vendor != HID_ANY_ID, vendor);
395 ADD(alias, "p", product != HID_ANY_ID, product);
396
397 return 1;
398}
399
400/* Looks like: ieee1394:venNmoNspNverN */
401static int do_ieee1394_entry(const char *filename,
402 void *symval, char *alias)
403{
404 DEF_FIELD(symval, ieee1394_device_id, match_flags);
405 DEF_FIELD(symval, ieee1394_device_id, vendor_id);
406 DEF_FIELD(symval, ieee1394_device_id, model_id);
407 DEF_FIELD(symval, ieee1394_device_id, specifier_id);
408 DEF_FIELD(symval, ieee1394_device_id, version);
409
410 strcpy(alias, "ieee1394:");
411 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
412 vendor_id);
413 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
414 model_id);
415 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
416 specifier_id);
417 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
418 version);
419
420 add_wildcard(alias);
421 return 1;
422}
423
424/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
425static int do_pci_entry(const char *filename,
426 void *symval, char *alias)
427{
428 /* Class field can be divided into these three. */
429 unsigned char baseclass, subclass, interface,
430 baseclass_mask, subclass_mask, interface_mask;
431
432 DEF_FIELD(symval, pci_device_id, vendor);
433 DEF_FIELD(symval, pci_device_id, device);
434 DEF_FIELD(symval, pci_device_id, subvendor);
435 DEF_FIELD(symval, pci_device_id, subdevice);
436 DEF_FIELD(symval, pci_device_id, class);
437 DEF_FIELD(symval, pci_device_id, class_mask);
438
439 strcpy(alias, "pci:");
440 ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
441 ADD(alias, "d", device != PCI_ANY_ID, device);
442 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
443 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
444
445 baseclass = (class) >> 16;
446 baseclass_mask = (class_mask) >> 16;
447 subclass = (class) >> 8;
448 subclass_mask = (class_mask) >> 8;
449 interface = class;
450 interface_mask = class_mask;
451
452 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
453 || (subclass_mask != 0 && subclass_mask != 0xFF)
454 || (interface_mask != 0 && interface_mask != 0xFF)) {
455 warn("Can't handle masks in %s:%04X\n",
456 filename, class_mask);
457 return 0;
458 }
459
460 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
461 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
462 ADD(alias, "i", interface_mask == 0xFF, interface);
463 add_wildcard(alias);
464 return 1;
465}
466
467/* looks like: "ccw:tNmNdtNdmN" */
468static int do_ccw_entry(const char *filename,
469 void *symval, char *alias)
470{
471 DEF_FIELD(symval, ccw_device_id, match_flags);
472 DEF_FIELD(symval, ccw_device_id, cu_type);
473 DEF_FIELD(symval, ccw_device_id, cu_model);
474 DEF_FIELD(symval, ccw_device_id, dev_type);
475 DEF_FIELD(symval, ccw_device_id, dev_model);
476
477 strcpy(alias, "ccw:");
478 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
479 cu_type);
480 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
481 cu_model);
482 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
483 dev_type);
484 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
485 dev_model);
486 add_wildcard(alias);
487 return 1;
488}
489
490/* looks like: "ap:tN" */
491static int do_ap_entry(const char *filename,
492 void *symval, char *alias)
493{
494 DEF_FIELD(symval, ap_device_id, dev_type);
495
496 sprintf(alias, "ap:t%02X*", dev_type);
497 return 1;
498}
499
500/* looks like: "css:tN" */
501static int do_css_entry(const char *filename,
502 void *symval, char *alias)
503{
504 DEF_FIELD(symval, css_device_id, type);
505
506 sprintf(alias, "css:t%01X", type);
507 return 1;
508}
509
510/* Looks like: "serio:tyNprNidNexN" */
511static int do_serio_entry(const char *filename,
512 void *symval, char *alias)
513{
514 DEF_FIELD(symval, serio_device_id, type);
515 DEF_FIELD(symval, serio_device_id, proto);
516 DEF_FIELD(symval, serio_device_id, id);
517 DEF_FIELD(symval, serio_device_id, extra);
518
519 strcpy(alias, "serio:");
520 ADD(alias, "ty", type != SERIO_ANY, type);
521 ADD(alias, "pr", proto != SERIO_ANY, proto);
522 ADD(alias, "id", id != SERIO_ANY, id);
523 ADD(alias, "ex", extra != SERIO_ANY, extra);
524
525 add_wildcard(alias);
526 return 1;
527}
528
529/* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or
530 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if)
531 *
532 * NOTE: Each driver should use one of the following : _HID, _CIDs
533 * or _CLS. Also, bb, ss, and pp can be substituted with ??
534 * as don't care byte.
535 */
536static int do_acpi_entry(const char *filename,
537 void *symval, char *alias)
538{
539 DEF_FIELD_ADDR(symval, acpi_device_id, id);
540 DEF_FIELD_ADDR(symval, acpi_device_id, cls);
541 DEF_FIELD_ADDR(symval, acpi_device_id, cls_msk);
542
543 if (id && strlen((const char *)*id))
544 sprintf(alias, "acpi*:%s:*", *id);
545 else if (cls) {
546 int i, byte_shift, cnt = 0;
547 unsigned int msk;
548
549 sprintf(&alias[cnt], "acpi*:");
550 cnt = 6;
551 for (i = 1; i <= 3; i++) {
552 byte_shift = 8 * (3-i);
553 msk = (*cls_msk >> byte_shift) & 0xFF;
554 if (msk)
555 sprintf(&alias[cnt], "%02x",
556 (*cls >> byte_shift) & 0xFF);
557 else
558 sprintf(&alias[cnt], "??");
559 cnt += 2;
560 }
561 sprintf(&alias[cnt], ":*");
562 }
563 return 1;
564}
565
566/* looks like: "pnp:dD" */
567static void do_pnp_device_entry(void *symval, unsigned long size,
568 struct module *mod)
569{
570 const unsigned long id_size = SIZE_pnp_device_id;
571 const unsigned int count = (size / id_size)-1;
572 unsigned int i;
573
574 device_id_check(mod->name, "pnp", size, id_size, symval);
575
576 for (i = 0; i < count; i++) {
577 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id);
578 char acpi_id[sizeof(*id)];
579 int j;
580
581 buf_printf(&mod->dev_table_buf,
582 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
583
584 /* fix broken pnp bus lowercasing */
585 for (j = 0; j < sizeof(acpi_id); j++)
586 acpi_id[j] = toupper((*id)[j]);
587 buf_printf(&mod->dev_table_buf,
588 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
589 }
590}
591
592/* looks like: "pnp:dD" for every device of the card */
593static void do_pnp_card_entries(void *symval, unsigned long size,
594 struct module *mod)
595{
596 const unsigned long id_size = SIZE_pnp_card_device_id;
597 const unsigned int count = (size / id_size)-1;
598 unsigned int i;
599
600 device_id_check(mod->name, "pnp", size, id_size, symval);
601
602 for (i = 0; i < count; i++) {
603 unsigned int j;
604 DEF_FIELD_ADDR(symval + i * id_size, pnp_card_device_id, devs);
605
606 for (j = 0; j < PNP_MAX_DEVICES; j++) {
607 const char *id = (char *)(*devs)[j].id;
608 int i2, j2;
609 int dup = 0;
610
611 if (!id[0])
612 break;
613
614 /* find duplicate, already added value */
615 for (i2 = 0; i2 < i && !dup; i2++) {
616 DEF_FIELD_ADDR_VAR(symval + i2 * id_size,
617 pnp_card_device_id,
618 devs, devs_dup);
619
620 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
621 const char *id2 =
622 (char *)(*devs_dup)[j2].id;
623
624 if (!id2[0])
625 break;
626
627 if (!strcmp(id, id2)) {
628 dup = 1;
629 break;
630 }
631 }
632 }
633
634 /* add an individual alias for every device entry */
635 if (!dup) {
636 char acpi_id[PNP_ID_LEN];
637 int k;
638
639 buf_printf(&mod->dev_table_buf,
640 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
641
642 /* fix broken pnp bus lowercasing */
643 for (k = 0; k < sizeof(acpi_id); k++)
644 acpi_id[k] = toupper(id[k]);
645 buf_printf(&mod->dev_table_buf,
646 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
647 }
648 }
649 }
650}
651
652/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
653static int do_pcmcia_entry(const char *filename,
654 void *symval, char *alias)
655{
656 unsigned int i;
657 DEF_FIELD(symval, pcmcia_device_id, match_flags);
658 DEF_FIELD(symval, pcmcia_device_id, manf_id);
659 DEF_FIELD(symval, pcmcia_device_id, card_id);
660 DEF_FIELD(symval, pcmcia_device_id, func_id);
661 DEF_FIELD(symval, pcmcia_device_id, function);
662 DEF_FIELD(symval, pcmcia_device_id, device_no);
663 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
664
665 for (i=0; i<4; i++) {
666 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]);
667 }
668
669 strcpy(alias, "pcmcia:");
670 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
671 manf_id);
672 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
673 card_id);
674 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
675 func_id);
676 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
677 function);
678 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
679 device_no);
680 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]);
681 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]);
682 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]);
683 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]);
684
685 add_wildcard(alias);
686 return 1;
687}
688
689static int do_vio_entry(const char *filename, void *symval,
690 char *alias)
691{
692 char *tmp;
693 DEF_FIELD_ADDR(symval, vio_device_id, type);
694 DEF_FIELD_ADDR(symval, vio_device_id, compat);
695
696 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
697 (*compat)[0] ? *compat : "*");
698
699 /* Replace all whitespace with underscores */
700 for (tmp = alias; tmp && *tmp; tmp++)
701 if (isspace (*tmp))
702 *tmp = '_';
703
704 add_wildcard(alias);
705 return 1;
706}
707
708#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
709
710static void do_input(char *alias,
711 kernel_ulong_t *arr, unsigned int min, unsigned int max)
712{
713 unsigned int i;
714
715 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++)
716 arr[i] = TO_NATIVE(arr[i]);
717 for (i = min; i < max; i++)
718 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
719 sprintf(alias + strlen(alias), "%X,*", i);
720}
721
722/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
723static int do_input_entry(const char *filename, void *symval,
724 char *alias)
725{
726 DEF_FIELD(symval, input_device_id, flags);
727 DEF_FIELD(symval, input_device_id, bustype);
728 DEF_FIELD(symval, input_device_id, vendor);
729 DEF_FIELD(symval, input_device_id, product);
730 DEF_FIELD(symval, input_device_id, version);
731 DEF_FIELD_ADDR(symval, input_device_id, evbit);
732 DEF_FIELD_ADDR(symval, input_device_id, keybit);
733 DEF_FIELD_ADDR(symval, input_device_id, relbit);
734 DEF_FIELD_ADDR(symval, input_device_id, absbit);
735 DEF_FIELD_ADDR(symval, input_device_id, mscbit);
736 DEF_FIELD_ADDR(symval, input_device_id, ledbit);
737 DEF_FIELD_ADDR(symval, input_device_id, sndbit);
738 DEF_FIELD_ADDR(symval, input_device_id, ffbit);
739 DEF_FIELD_ADDR(symval, input_device_id, swbit);
740
741 sprintf(alias, "input:");
742
743 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
744 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
745 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
746 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
747
748 sprintf(alias + strlen(alias), "-e*");
749 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
750 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
751 sprintf(alias + strlen(alias), "k*");
752 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
753 do_input(alias, *keybit,
754 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
755 INPUT_DEVICE_ID_KEY_MAX);
756 sprintf(alias + strlen(alias), "r*");
757 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
758 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
759 sprintf(alias + strlen(alias), "a*");
760 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
761 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
762 sprintf(alias + strlen(alias), "m*");
763 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
764 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
765 sprintf(alias + strlen(alias), "l*");
766 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
767 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
768 sprintf(alias + strlen(alias), "s*");
769 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
770 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
771 sprintf(alias + strlen(alias), "f*");
772 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
773 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
774 sprintf(alias + strlen(alias), "w*");
775 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
776 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
777 return 1;
778}
779
780static int do_eisa_entry(const char *filename, void *symval,
781 char *alias)
782{
783 DEF_FIELD_ADDR(symval, eisa_device_id, sig);
784 if (sig[0])
785 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig);
786 else
787 strcat(alias, "*");
788 return 1;
789}
790
791/* Looks like: parisc:tNhvNrevNsvN */
792static int do_parisc_entry(const char *filename, void *symval,
793 char *alias)
794{
795 DEF_FIELD(symval, parisc_device_id, hw_type);
796 DEF_FIELD(symval, parisc_device_id, hversion);
797 DEF_FIELD(symval, parisc_device_id, hversion_rev);
798 DEF_FIELD(symval, parisc_device_id, sversion);
799
800 strcpy(alias, "parisc:");
801 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
802 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
803 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
804 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
805
806 add_wildcard(alias);
807 return 1;
808}
809
810/* Looks like: sdio:cNvNdN. */
811static int do_sdio_entry(const char *filename,
812 void *symval, char *alias)
813{
814 DEF_FIELD(symval, sdio_device_id, class);
815 DEF_FIELD(symval, sdio_device_id, vendor);
816 DEF_FIELD(symval, sdio_device_id, device);
817
818 strcpy(alias, "sdio:");
819 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
820 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
821 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
822 add_wildcard(alias);
823 return 1;
824}
825
826/* Looks like: ssb:vNidNrevN. */
827static int do_ssb_entry(const char *filename,
828 void *symval, char *alias)
829{
830 DEF_FIELD(symval, ssb_device_id, vendor);
831 DEF_FIELD(symval, ssb_device_id, coreid);
832 DEF_FIELD(symval, ssb_device_id, revision);
833
834 strcpy(alias, "ssb:");
835 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
836 ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
837 ADD(alias, "rev", revision != SSB_ANY_REV, revision);
838 add_wildcard(alias);
839 return 1;
840}
841
842/* Looks like: bcma:mNidNrevNclN. */
843static int do_bcma_entry(const char *filename,
844 void *symval, char *alias)
845{
846 DEF_FIELD(symval, bcma_device_id, manuf);
847 DEF_FIELD(symval, bcma_device_id, id);
848 DEF_FIELD(symval, bcma_device_id, rev);
849 DEF_FIELD(symval, bcma_device_id, class);
850
851 strcpy(alias, "bcma:");
852 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
853 ADD(alias, "id", id != BCMA_ANY_ID, id);
854 ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
855 ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
856 add_wildcard(alias);
857 return 1;
858}
859
860/* Looks like: virtio:dNvN */
861static int do_virtio_entry(const char *filename, void *symval,
862 char *alias)
863{
864 DEF_FIELD(symval, virtio_device_id, device);
865 DEF_FIELD(symval, virtio_device_id, vendor);
866
867 strcpy(alias, "virtio:");
868 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
869 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
870
871 add_wildcard(alias);
872 return 1;
873}
874
875/*
876 * Looks like: vmbus:guid
877 * Each byte of the guid will be represented by two hex characters
878 * in the name.
879 */
880
881static int do_vmbus_entry(const char *filename, void *symval,
882 char *alias)
883{
884 int i;
885 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
886 char guid_name[(sizeof(*guid) + 1) * 2];
887
888 for (i = 0; i < (sizeof(*guid) * 2); i += 2)
889 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2]));
890
891 strcpy(alias, "vmbus:");
892 strcat(alias, guid_name);
893
894 return 1;
895}
896
897/* Looks like: rpmsg:S */
898static int do_rpmsg_entry(const char *filename, void *symval,
899 char *alias)
900{
901 DEF_FIELD_ADDR(symval, rpmsg_device_id, name);
902 sprintf(alias, RPMSG_DEVICE_MODALIAS_FMT, *name);
903
904 return 1;
905}
906
907/* Looks like: i2c:S */
908static int do_i2c_entry(const char *filename, void *symval,
909 char *alias)
910{
911 DEF_FIELD_ADDR(symval, i2c_device_id, name);
912 sprintf(alias, I2C_MODULE_PREFIX "%s", *name);
913
914 return 1;
915}
916
917/* Looks like: spi:S */
918static int do_spi_entry(const char *filename, void *symval,
919 char *alias)
920{
921 DEF_FIELD_ADDR(symval, spi_device_id, name);
922 sprintf(alias, SPI_MODULE_PREFIX "%s", *name);
923
924 return 1;
925}
926
927static const struct dmifield {
928 const char *prefix;
929 int field;
930} dmi_fields[] = {
931 { "bvn", DMI_BIOS_VENDOR },
932 { "bvr", DMI_BIOS_VERSION },
933 { "bd", DMI_BIOS_DATE },
934 { "svn", DMI_SYS_VENDOR },
935 { "pn", DMI_PRODUCT_NAME },
936 { "pvr", DMI_PRODUCT_VERSION },
937 { "rvn", DMI_BOARD_VENDOR },
938 { "rn", DMI_BOARD_NAME },
939 { "rvr", DMI_BOARD_VERSION },
940 { "cvn", DMI_CHASSIS_VENDOR },
941 { "ct", DMI_CHASSIS_TYPE },
942 { "cvr", DMI_CHASSIS_VERSION },
943 { NULL, DMI_NONE }
944};
945
946static void dmi_ascii_filter(char *d, const char *s)
947{
948 /* Filter out characters we don't want to see in the modalias string */
949 for (; *s; s++)
950 if (*s > ' ' && *s < 127 && *s != ':')
951 *(d++) = *s;
952
953 *d = 0;
954}
955
956
957static int do_dmi_entry(const char *filename, void *symval,
958 char *alias)
959{
960 int i, j;
961 DEF_FIELD_ADDR(symval, dmi_system_id, matches);
962 sprintf(alias, "dmi*");
963
964 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
965 for (j = 0; j < 4; j++) {
966 if ((*matches)[j].slot &&
967 (*matches)[j].slot == dmi_fields[i].field) {
968 sprintf(alias + strlen(alias), ":%s*",
969 dmi_fields[i].prefix);
970 dmi_ascii_filter(alias + strlen(alias),
971 (*matches)[j].substr);
972 strcat(alias, "*");
973 }
974 }
975 }
976
977 strcat(alias, ":");
978 return 1;
979}
980
981static int do_platform_entry(const char *filename,
982 void *symval, char *alias)
983{
984 DEF_FIELD_ADDR(symval, platform_device_id, name);
985 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name);
986 return 1;
987}
988
989static int do_mdio_entry(const char *filename,
990 void *symval, char *alias)
991{
992 int i;
993 DEF_FIELD(symval, mdio_device_id, phy_id);
994 DEF_FIELD(symval, mdio_device_id, phy_id_mask);
995
996 alias += sprintf(alias, MDIO_MODULE_PREFIX);
997
998 for (i = 0; i < 32; i++) {
999 if (!((phy_id_mask >> (31-i)) & 1))
1000 *(alias++) = '?';
1001 else if ((phy_id >> (31-i)) & 1)
1002 *(alias++) = '1';
1003 else
1004 *(alias++) = '0';
1005 }
1006
1007 /* Terminate the string */
1008 *alias = 0;
1009
1010 return 1;
1011}
1012
1013/* Looks like: zorro:iN. */
1014static int do_zorro_entry(const char *filename, void *symval,
1015 char *alias)
1016{
1017 DEF_FIELD(symval, zorro_device_id, id);
1018 strcpy(alias, "zorro:");
1019 ADD(alias, "i", id != ZORRO_WILDCARD, id);
1020 return 1;
1021}
1022
1023/* looks like: "pnp:dD" */
1024static int do_isapnp_entry(const char *filename,
1025 void *symval, char *alias)
1026{
1027 DEF_FIELD(symval, isapnp_device_id, vendor);
1028 DEF_FIELD(symval, isapnp_device_id, function);
1029 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
1030 'A' + ((vendor >> 2) & 0x3f) - 1,
1031 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
1032 'A' + ((vendor >> 8) & 0x1f) - 1,
1033 (function >> 4) & 0x0f, function & 0x0f,
1034 (function >> 12) & 0x0f, (function >> 8) & 0x0f);
1035 return 1;
1036}
1037
1038/* Looks like: "ipack:fNvNdN". */
1039static int do_ipack_entry(const char *filename,
1040 void *symval, char *alias)
1041{
1042 DEF_FIELD(symval, ipack_device_id, format);
1043 DEF_FIELD(symval, ipack_device_id, vendor);
1044 DEF_FIELD(symval, ipack_device_id, device);
1045 strcpy(alias, "ipack:");
1046 ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
1047 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
1048 ADD(alias, "d", device != IPACK_ANY_ID, device);
1049 add_wildcard(alias);
1050 return 1;
1051}
1052
1053/*
1054 * Append a match expression for a single masked hex digit.
1055 * outp points to a pointer to the character at which to append.
1056 * *outp is updated on return to point just after the appended text,
1057 * to facilitate further appending.
1058 */
1059static void append_nibble_mask(char **outp,
1060 unsigned int nibble, unsigned int mask)
1061{
1062 char *p = *outp;
1063 unsigned int i;
1064
1065 switch (mask) {
1066 case 0:
1067 *p++ = '?';
1068 break;
1069
1070 case 0xf:
1071 p += sprintf(p, "%X", nibble);
1072 break;
1073
1074 default:
1075 /*
1076 * Dumbly emit a match pattern for all possible matching
1077 * digits. This could be improved in some cases using ranges,
1078 * but it has the advantage of being trivially correct, and is
1079 * often optimal.
1080 */
1081 *p++ = '[';
1082 for (i = 0; i < 0x10; i++)
1083 if ((i & mask) == nibble)
1084 p += sprintf(p, "%X", i);
1085 *p++ = ']';
1086 }
1087
1088 /* Ensure that the string remains NUL-terminated: */
1089 *p = '\0';
1090
1091 /* Advance the caller's end-of-string pointer: */
1092 *outp = p;
1093}
1094
1095/*
1096 * looks like: "amba:dN"
1097 *
1098 * N is exactly 8 digits, where each is an upper-case hex digit, or
1099 * a ? or [] pattern matching exactly one digit.
1100 */
1101static int do_amba_entry(const char *filename,
1102 void *symval, char *alias)
1103{
1104 unsigned int digit;
1105 char *p = alias;
1106 DEF_FIELD(symval, amba_id, id);
1107 DEF_FIELD(symval, amba_id, mask);
1108
1109 if ((id & mask) != id)
1110 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1111 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1112 filename, id, mask);
1113
1114 p += sprintf(alias, "amba:d");
1115 for (digit = 0; digit < 8; digit++)
1116 append_nibble_mask(&p,
1117 (id >> (4 * (7 - digit))) & 0xf,
1118 (mask >> (4 * (7 - digit))) & 0xf);
1119
1120 return 1;
1121}
1122
1123/*
1124 * looks like: "mipscdmm:tN"
1125 *
1126 * N is exactly 2 digits, where each is an upper-case hex digit, or
1127 * a ? or [] pattern matching exactly one digit.
1128 */
1129static int do_mips_cdmm_entry(const char *filename,
1130 void *symval, char *alias)
1131{
1132 DEF_FIELD(symval, mips_cdmm_device_id, type);
1133
1134 sprintf(alias, "mipscdmm:t%02X*", type);
1135 return 1;
1136}
1137
1138/* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
1139 * All fields are numbers. It would be nicer to use strings for vendor
1140 * and feature, but getting those out of the build system here is too
1141 * complicated.
1142 */
1143
1144static int do_x86cpu_entry(const char *filename, void *symval,
1145 char *alias)
1146{
1147 DEF_FIELD(symval, x86_cpu_id, feature);
1148 DEF_FIELD(symval, x86_cpu_id, family);
1149 DEF_FIELD(symval, x86_cpu_id, model);
1150 DEF_FIELD(symval, x86_cpu_id, vendor);
1151
1152 strcpy(alias, "cpu:type:x86,");
1153 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
1154 ADD(alias, "fam", family != X86_FAMILY_ANY, family);
1155 ADD(alias, "mod", model != X86_MODEL_ANY, model);
1156 strcat(alias, ":feature:*");
1157 if (feature != X86_FEATURE_ANY)
1158 sprintf(alias + strlen(alias), "%04X*", feature);
1159 return 1;
1160}
1161
1162/* LOOKS like cpu:type:*:feature:*FEAT* */
1163static int do_cpu_entry(const char *filename, void *symval, char *alias)
1164{
1165 DEF_FIELD(symval, cpu_feature, feature);
1166
1167 sprintf(alias, "cpu:type:*:feature:*%04X*", feature);
1168 return 1;
1169}
1170
1171/* Looks like: mei:S:uuid:N:* */
1172static int do_mei_entry(const char *filename, void *symval,
1173 char *alias)
1174{
1175 DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
1176 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid);
1177 DEF_FIELD(symval, mei_cl_device_id, version);
1178
1179 sprintf(alias, MEI_CL_MODULE_PREFIX);
1180 sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*");
1181 add_uuid(alias, *uuid);
1182 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version);
1183
1184 strcat(alias, ":*");
1185
1186 return 1;
1187}
1188
1189/* Looks like: rapidio:vNdNavNadN */
1190static int do_rio_entry(const char *filename,
1191 void *symval, char *alias)
1192{
1193 DEF_FIELD(symval, rio_device_id, did);
1194 DEF_FIELD(symval, rio_device_id, vid);
1195 DEF_FIELD(symval, rio_device_id, asm_did);
1196 DEF_FIELD(symval, rio_device_id, asm_vid);
1197
1198 strcpy(alias, "rapidio:");
1199 ADD(alias, "v", vid != RIO_ANY_ID, vid);
1200 ADD(alias, "d", did != RIO_ANY_ID, did);
1201 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
1202 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
1203
1204 add_wildcard(alias);
1205 return 1;
1206}
1207
1208/* Looks like: ulpi:vNpN */
1209static int do_ulpi_entry(const char *filename, void *symval,
1210 char *alias)
1211{
1212 DEF_FIELD(symval, ulpi_device_id, vendor);
1213 DEF_FIELD(symval, ulpi_device_id, product);
1214
1215 sprintf(alias, "ulpi:v%04xp%04x", vendor, product);
1216
1217 return 1;
1218}
1219
1220/* Looks like: hdaudio:vNrNaN */
1221static int do_hda_entry(const char *filename, void *symval, char *alias)
1222{
1223 DEF_FIELD(symval, hda_device_id, vendor_id);
1224 DEF_FIELD(symval, hda_device_id, rev_id);
1225 DEF_FIELD(symval, hda_device_id, api_version);
1226
1227 strcpy(alias, "hdaudio:");
1228 ADD(alias, "v", vendor_id != 0, vendor_id);
1229 ADD(alias, "r", rev_id != 0, rev_id);
1230 ADD(alias, "a", api_version != 0, api_version);
1231
1232 add_wildcard(alias);
1233 return 1;
1234}
1235
1236/* Looks like: sdw:mNpN */
1237static int do_sdw_entry(const char *filename, void *symval, char *alias)
1238{
1239 DEF_FIELD(symval, sdw_device_id, mfg_id);
1240 DEF_FIELD(symval, sdw_device_id, part_id);
1241
1242 strcpy(alias, "sdw:");
1243 ADD(alias, "m", mfg_id != 0, mfg_id);
1244 ADD(alias, "p", part_id != 0, part_id);
1245
1246 add_wildcard(alias);
1247 return 1;
1248}
1249
1250/* Looks like: fsl-mc:vNdN */
1251static int do_fsl_mc_entry(const char *filename, void *symval,
1252 char *alias)
1253{
1254 DEF_FIELD(symval, fsl_mc_device_id, vendor);
1255 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type);
1256
1257 sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type);
1258 return 1;
1259}
1260
1261/* Looks like: tbsvc:kSpNvNrN */
1262static int do_tbsvc_entry(const char *filename, void *symval, char *alias)
1263{
1264 DEF_FIELD(symval, tb_service_id, match_flags);
1265 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key);
1266 DEF_FIELD(symval, tb_service_id, protocol_id);
1267 DEF_FIELD(symval, tb_service_id, protocol_version);
1268 DEF_FIELD(symval, tb_service_id, protocol_revision);
1269
1270 strcpy(alias, "tbsvc:");
1271 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY)
1272 sprintf(alias + strlen(alias), "k%s", *protocol_key);
1273 else
1274 strcat(alias + strlen(alias), "k*");
1275 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id);
1276 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION,
1277 protocol_version);
1278 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION,
1279 protocol_revision);
1280
1281 add_wildcard(alias);
1282 return 1;
1283}
1284
1285/* Looks like: typec:idNmN */
1286static int do_typec_entry(const char *filename, void *symval, char *alias)
1287{
1288 DEF_FIELD(symval, typec_device_id, svid);
1289 DEF_FIELD(symval, typec_device_id, mode);
1290
1291 sprintf(alias, "typec:id%04X", svid);
1292 ADD(alias, "m", mode != TYPEC_ANY_MODE, mode);
1293
1294 return 1;
1295}
1296
1297/* Looks like: tee:uuid */
1298static int do_tee_entry(const char *filename, void *symval, char *alias)
1299{
1300 DEF_FIELD(symval, tee_client_device_id, uuid);
1301
1302 sprintf(alias, "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
1303 uuid.b[0], uuid.b[1], uuid.b[2], uuid.b[3], uuid.b[4],
1304 uuid.b[5], uuid.b[6], uuid.b[7], uuid.b[8], uuid.b[9],
1305 uuid.b[10], uuid.b[11], uuid.b[12], uuid.b[13], uuid.b[14],
1306 uuid.b[15]);
1307
1308 add_wildcard(alias);
1309 return 1;
1310}
1311
1312/* Looks like: wmi:guid */
1313static int do_wmi_entry(const char *filename, void *symval, char *alias)
1314{
1315 int len;
1316 DEF_FIELD_ADDR(symval, wmi_device_id, guid_string);
1317
1318 if (strlen(*guid_string) != UUID_STRING_LEN) {
1319 warn("Invalid WMI device id 'wmi:%s' in '%s'\n",
1320 *guid_string, filename);
1321 return 0;
1322 }
1323
1324 len = snprintf(alias, ALIAS_SIZE, WMI_MODULE_PREFIX "%s", *guid_string);
1325 if (len < 0 || len >= ALIAS_SIZE) {
1326 warn("Could not generate all MODULE_ALIAS's in '%s'\n",
1327 filename);
1328 return 0;
1329 }
1330 return 1;
1331}
1332
1333/* Does namelen bytes of name exactly match the symbol? */
1334static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1335{
1336 if (namelen != strlen(symbol))
1337 return false;
1338
1339 return memcmp(name, symbol, namelen) == 0;
1340}
1341
1342static void do_table(void *symval, unsigned long size,
1343 unsigned long id_size,
1344 const char *device_id,
1345 int (*do_entry)(const char *filename, void *symval, char *alias),
1346 struct module *mod)
1347{
1348 unsigned int i;
1349 char alias[ALIAS_SIZE];
1350
1351 device_id_check(mod->name, device_id, size, id_size, symval);
1352 /* Leave last one: it's the terminator. */
1353 size -= id_size;
1354
1355 for (i = 0; i < size; i += id_size) {
1356 if (do_entry(mod->name, symval+i, alias)) {
1357 buf_printf(&mod->dev_table_buf,
1358 "MODULE_ALIAS(\"%s\");\n", alias);
1359 }
1360 }
1361}
1362
1363static const struct devtable devtable[] = {
1364 {"hid", SIZE_hid_device_id, do_hid_entry},
1365 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry},
1366 {"pci", SIZE_pci_device_id, do_pci_entry},
1367 {"ccw", SIZE_ccw_device_id, do_ccw_entry},
1368 {"ap", SIZE_ap_device_id, do_ap_entry},
1369 {"css", SIZE_css_device_id, do_css_entry},
1370 {"serio", SIZE_serio_device_id, do_serio_entry},
1371 {"acpi", SIZE_acpi_device_id, do_acpi_entry},
1372 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry},
1373 {"vio", SIZE_vio_device_id, do_vio_entry},
1374 {"input", SIZE_input_device_id, do_input_entry},
1375 {"eisa", SIZE_eisa_device_id, do_eisa_entry},
1376 {"parisc", SIZE_parisc_device_id, do_parisc_entry},
1377 {"sdio", SIZE_sdio_device_id, do_sdio_entry},
1378 {"ssb", SIZE_ssb_device_id, do_ssb_entry},
1379 {"bcma", SIZE_bcma_device_id, do_bcma_entry},
1380 {"virtio", SIZE_virtio_device_id, do_virtio_entry},
1381 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry},
1382 {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry},
1383 {"i2c", SIZE_i2c_device_id, do_i2c_entry},
1384 {"spi", SIZE_spi_device_id, do_spi_entry},
1385 {"dmi", SIZE_dmi_system_id, do_dmi_entry},
1386 {"platform", SIZE_platform_device_id, do_platform_entry},
1387 {"mdio", SIZE_mdio_device_id, do_mdio_entry},
1388 {"zorro", SIZE_zorro_device_id, do_zorro_entry},
1389 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry},
1390 {"ipack", SIZE_ipack_device_id, do_ipack_entry},
1391 {"amba", SIZE_amba_id, do_amba_entry},
1392 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry},
1393 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry},
1394 {"cpu", SIZE_cpu_feature, do_cpu_entry},
1395 {"mei", SIZE_mei_cl_device_id, do_mei_entry},
1396 {"rapidio", SIZE_rio_device_id, do_rio_entry},
1397 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry},
1398 {"hdaudio", SIZE_hda_device_id, do_hda_entry},
1399 {"sdw", SIZE_sdw_device_id, do_sdw_entry},
1400 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry},
1401 {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry},
1402 {"typec", SIZE_typec_device_id, do_typec_entry},
1403 {"tee", SIZE_tee_client_device_id, do_tee_entry},
1404 {"wmi", SIZE_wmi_device_id, do_wmi_entry},
1405};
1406
1407/* Create MODULE_ALIAS() statements.
1408 * At this time, we cannot write the actual output C source yet,
1409 * so we write into the mod->dev_table_buf buffer. */
1410void handle_moddevtable(struct module *mod, struct elf_info *info,
1411 Elf_Sym *sym, const char *symname)
1412{
1413 void *symval;
1414 char *zeros = NULL;
1415 const char *name, *identifier;
1416 unsigned int namelen;
1417
1418 /* We're looking for a section relative symbol */
1419 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1420 return;
1421
1422 /* We're looking for an object */
1423 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1424 return;
1425
1426 /* All our symbols are of form __mod_<name>__<identifier>_device_table. */
1427 if (strncmp(symname, "__mod_", strlen("__mod_")))
1428 return;
1429 name = symname + strlen("__mod_");
1430 namelen = strlen(name);
1431 if (namelen < strlen("_device_table"))
1432 return;
1433 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1434 return;
1435 identifier = strstr(name, "__");
1436 if (!identifier)
1437 return;
1438 namelen = identifier - name;
1439
1440 /* Handle all-NULL symbols allocated into .bss */
1441 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1442 zeros = calloc(1, sym->st_size);
1443 symval = zeros;
1444 } else {
1445 symval = (void *)info->hdr
1446 + info->sechdrs[get_secindex(info, sym)].sh_offset
1447 + sym->st_value;
1448 }
1449
1450 /* First handle the "special" cases */
1451 if (sym_is(name, namelen, "usb"))
1452 do_usb_table(symval, sym->st_size, mod);
1453 if (sym_is(name, namelen, "of"))
1454 do_of_table(symval, sym->st_size, mod);
1455 else if (sym_is(name, namelen, "pnp"))
1456 do_pnp_device_entry(symval, sym->st_size, mod);
1457 else if (sym_is(name, namelen, "pnp_card"))
1458 do_pnp_card_entries(symval, sym->st_size, mod);
1459 else {
1460 int i;
1461
1462 for (i = 0; i < ARRAY_SIZE(devtable); i++) {
1463 const struct devtable *p = &devtable[i];
1464
1465 if (sym_is(name, namelen, p->device_id)) {
1466 do_table(symval, sym->st_size, p->id_size,
1467 p->device_id, p->do_entry, mod);
1468 break;
1469 }
1470 }
1471 }
1472 free(zeros);
1473}
1474
1475/* Now add out buffered information to the generated C source */
1476void add_moddevtable(struct buffer *buf, struct module *mod)
1477{
1478 buf_printf(buf, "\n");
1479 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1480 free(mod->dev_table_buf.p);
1481}