projects/linux·blob v5.13 · refs

1565 lines · 44.6 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} guid_t;
40
41/* backwards compatibility, don't use in new code */
42typedef struct {
43 __u8 b[16];
44} uuid_le;
45typedef struct {
46 __u8 b[16];
47} uuid_t;
48#define UUID_STRING_LEN 36
49
50/* Big exception to the "don't include kernel headers into userspace, which
51 * even potentially has different endianness and word sizes, since
52 * we handle those differences explicitly below */
53#include "../../include/linux/mod_devicetable.h"
54
55/* This array collects all instances that use the generic do_table */
56struct devtable {
57 const char *device_id; /* name of table, __mod_<name>__*_device_table. */
58 unsigned long id_size;
59 int (*do_entry)(const char *filename, void *symval, char *alias);
60};
61
62/* Size of alias provided to do_entry functions */
63#define ALIAS_SIZE 500
64
65/* Define a variable f that holds the value of field f of struct devid
66 * based at address m.
67 */
68#define DEF_FIELD(m, devid, f) \
69 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f))
70
71/* Define a variable v that holds the address of field f of struct devid
72 * based at address m. Due to the way typeof works, for a field of type
73 * T[N] the variable has type T(*)[N], _not_ T*.
74 */
75#define DEF_FIELD_ADDR_VAR(m, devid, f, v) \
76 typeof(((struct devid *)0)->f) *v = ((m) + OFF_##devid##_##f)
77
78/* Define a variable f that holds the address of field f of struct devid
79 * based at address m. Due to the way typeof works, for a field of type
80 * T[N] the variable has type T(*)[N], _not_ T*.
81 */
82#define DEF_FIELD_ADDR(m, devid, f) \
83 DEF_FIELD_ADDR_VAR(m, devid, f, f)
84
85#define ADD(str, sep, cond, field) \
86do { \
87 strcat(str, sep); \
88 if (cond) \
89 sprintf(str + strlen(str), \
90 sizeof(field) == 1 ? "%02X" : \
91 sizeof(field) == 2 ? "%04X" : \
92 sizeof(field) == 4 ? "%08X" : "", \
93 field); \
94 else \
95 sprintf(str + strlen(str), "*"); \
96} while(0)
97
98/* End in a wildcard, for future extension */
99static inline void add_wildcard(char *str)
100{
101 int len = strlen(str);
102
103 if (str[len - 1] != '*')
104 strcat(str + len, "*");
105}
106
107static inline void add_uuid(char *str, uuid_le uuid)
108{
109 int len = strlen(str);
110
111 sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
112 uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0],
113 uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6],
114 uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11],
115 uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]);
116}
117
118/**
119 * Check that sizeof(device_id type) are consistent with size of section
120 * in .o file. If in-consistent then userspace and kernel does not agree
121 * on actual size which is a bug.
122 * Also verify that the final entry in the table is all zeros.
123 * Ignore both checks if build host differ from target host and size differs.
124 **/
125static void device_id_check(const char *modname, const char *device_id,
126 unsigned long size, unsigned long id_size,
127 void *symval)
128{
129 int i;
130
131 if (size % id_size || size < id_size) {
132 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
133 "of the size of "
134 "section __mod_%s__<identifier>_device_table=%lu.\n"
135 "Fix definition of struct %s_device_id "
136 "in mod_devicetable.h\n",
137 modname, device_id, id_size, device_id, size, device_id);
138 }
139 /* Verify last one is a terminator */
140 for (i = 0; i < id_size; i++ ) {
141 if (*(uint8_t*)(symval+size-id_size+i)) {
142 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
143 "The last of %lu is:\n",
144 modname, device_id, id_size, size / id_size);
145 for (i = 0; i < id_size; i++ )
146 fprintf(stderr,"0x%02x ",
147 *(uint8_t*)(symval+size-id_size+i) );
148 fprintf(stderr,"\n");
149 fatal("%s: struct %s_device_id is not terminated "
150 "with a NULL entry!\n", modname, device_id);
151 }
152 }
153}
154
155/* USB is special because the bcdDevice can be matched against a numeric range */
156/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
157static void do_usb_entry(void *symval,
158 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
159 unsigned char range_lo, unsigned char range_hi,
160 unsigned char max, struct module *mod)
161{
162 char alias[500];
163 DEF_FIELD(symval, usb_device_id, match_flags);
164 DEF_FIELD(symval, usb_device_id, idVendor);
165 DEF_FIELD(symval, usb_device_id, idProduct);
166 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
167 DEF_FIELD(symval, usb_device_id, bDeviceClass);
168 DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
169 DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
170 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
171 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
172 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
173 DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
174
175 strcpy(alias, "usb:");
176 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
177 idVendor);
178 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
179 idProduct);
180
181 strcat(alias, "d");
182 if (bcdDevice_initial_digits)
183 sprintf(alias + strlen(alias), "%0*X",
184 bcdDevice_initial_digits, bcdDevice_initial);
185 if (range_lo == range_hi)
186 sprintf(alias + strlen(alias), "%X", range_lo);
187 else if (range_lo > 0 || range_hi < max) {
188 if (range_lo > 0x9 || range_hi < 0xA)
189 sprintf(alias + strlen(alias),
190 "[%X-%X]",
191 range_lo,
192 range_hi);
193 else {
194 sprintf(alias + strlen(alias),
195 range_lo < 0x9 ? "[%X-9" : "[%X",
196 range_lo);
197 sprintf(alias + strlen(alias),
198 range_hi > 0xA ? "A-%X]" : "%X]",
199 range_hi);
200 }
201 }
202 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
203 strcat(alias, "*");
204
205 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
206 bDeviceClass);
207 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
208 bDeviceSubClass);
209 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
210 bDeviceProtocol);
211 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
212 bInterfaceClass);
213 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
214 bInterfaceSubClass);
215 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
216 bInterfaceProtocol);
217 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
218 bInterfaceNumber);
219
220 add_wildcard(alias);
221 buf_printf(&mod->dev_table_buf,
222 "MODULE_ALIAS(\"%s\");\n", alias);
223}
224
225/* Handles increment/decrement of BCD formatted integers */
226/* Returns the previous value, so it works like i++ or i-- */
227static unsigned int incbcd(unsigned int *bcd,
228 int inc,
229 unsigned char max,
230 size_t chars)
231{
232 unsigned int init = *bcd, i, j;
233 unsigned long long c, dec = 0;
234
235 /* If bcd is not in BCD format, just increment */
236 if (max > 0x9) {
237 *bcd += inc;
238 return init;
239 }
240
241 /* Convert BCD to Decimal */
242 for (i=0 ; i < chars ; i++) {
243 c = (*bcd >> (i << 2)) & 0xf;
244 c = c > 9 ? 9 : c; /* force to bcd just in case */
245 for (j=0 ; j < i ; j++)
246 c = c * 10;
247 dec += c;
248 }
249
250 /* Do our increment/decrement */
251 dec += inc;
252 *bcd = 0;
253
254 /* Convert back to BCD */
255 for (i=0 ; i < chars ; i++) {
256 for (c=1,j=0 ; j < i ; j++)
257 c = c * 10;
258 c = (dec / c) % 10;
259 *bcd += c << (i << 2);
260 }
261 return init;
262}
263
264static void do_usb_entry_multi(void *symval, struct module *mod)
265{
266 unsigned int devlo, devhi;
267 unsigned char chi, clo, max;
268 int ndigits;
269
270 DEF_FIELD(symval, usb_device_id, match_flags);
271 DEF_FIELD(symval, usb_device_id, idVendor);
272 DEF_FIELD(symval, usb_device_id, idProduct);
273 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
274 DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
275 DEF_FIELD(symval, usb_device_id, bDeviceClass);
276 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
277
278 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
279 bcdDevice_lo : 0x0U;
280 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
281 bcdDevice_hi : ~0x0U;
282
283 /* Figure out if this entry is in bcd or hex format */
284 max = 0x9; /* Default to decimal format */
285 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
286 clo = (devlo >> (ndigits << 2)) & 0xf;
287 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
288 if (clo > max || chi > max) {
289 max = 0xf;
290 break;
291 }
292 }
293
294 /*
295 * Some modules (visor) have empty slots as placeholder for
296 * run-time specification that results in catch-all alias
297 */
298 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
299 return;
300
301 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
302 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
303 clo = devlo & 0xf;
304 chi = devhi & 0xf;
305 if (chi > max) /* If we are in bcd mode, truncate if necessary */
306 chi = max;
307 devlo >>= 4;
308 devhi >>= 4;
309
310 if (devlo == devhi || !ndigits) {
311 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
312 break;
313 }
314
315 if (clo > 0x0)
316 do_usb_entry(symval,
317 incbcd(&devlo, 1, max,
318 sizeof(bcdDevice_lo) * 2),
319 ndigits, clo, max, max, mod);
320
321 if (chi < max)
322 do_usb_entry(symval,
323 incbcd(&devhi, -1, max,
324 sizeof(bcdDevice_lo) * 2),
325 ndigits, 0x0, chi, max, mod);
326 }
327}
328
329static void do_usb_table(void *symval, unsigned long size,
330 struct module *mod)
331{
332 unsigned int i;
333 const unsigned long id_size = SIZE_usb_device_id;
334
335 device_id_check(mod->name, "usb", size, id_size, symval);
336
337 /* Leave last one: it's the terminator. */
338 size -= id_size;
339
340 for (i = 0; i < size; i += id_size)
341 do_usb_entry_multi(symval + i, mod);
342}
343
344static void do_of_entry_multi(void *symval, struct module *mod)
345{
346 char alias[500];
347 int len;
348 char *tmp;
349
350 DEF_FIELD_ADDR(symval, of_device_id, name);
351 DEF_FIELD_ADDR(symval, of_device_id, type);
352 DEF_FIELD_ADDR(symval, of_device_id, compatible);
353
354 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
355 (*type)[0] ? *type : "*");
356
357 if ((*compatible)[0])
358 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
359 *compatible);
360
361 /* Replace all whitespace with underscores */
362 for (tmp = alias; tmp && *tmp; tmp++)
363 if (isspace(*tmp))
364 *tmp = '_';
365
366 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
367 strcat(alias, "C");
368 add_wildcard(alias);
369 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
370}
371
372static void do_of_table(void *symval, unsigned long size,
373 struct module *mod)
374{
375 unsigned int i;
376 const unsigned long id_size = SIZE_of_device_id;
377
378 device_id_check(mod->name, "of", size, id_size, symval);
379
380 /* Leave last one: it's the terminator. */
381 size -= id_size;
382
383 for (i = 0; i < size; i += id_size)
384 do_of_entry_multi(symval + i, mod);
385}
386
387/* Looks like: hid:bNvNpN */
388static int do_hid_entry(const char *filename,
389 void *symval, char *alias)
390{
391 DEF_FIELD(symval, hid_device_id, bus);
392 DEF_FIELD(symval, hid_device_id, group);
393 DEF_FIELD(symval, hid_device_id, vendor);
394 DEF_FIELD(symval, hid_device_id, product);
395
396 sprintf(alias, "hid:");
397 ADD(alias, "b", bus != HID_BUS_ANY, bus);
398 ADD(alias, "g", group != HID_GROUP_ANY, group);
399 ADD(alias, "v", vendor != HID_ANY_ID, vendor);
400 ADD(alias, "p", product != HID_ANY_ID, product);
401
402 return 1;
403}
404
405/* Looks like: ieee1394:venNmoNspNverN */
406static int do_ieee1394_entry(const char *filename,
407 void *symval, char *alias)
408{
409 DEF_FIELD(symval, ieee1394_device_id, match_flags);
410 DEF_FIELD(symval, ieee1394_device_id, vendor_id);
411 DEF_FIELD(symval, ieee1394_device_id, model_id);
412 DEF_FIELD(symval, ieee1394_device_id, specifier_id);
413 DEF_FIELD(symval, ieee1394_device_id, version);
414
415 strcpy(alias, "ieee1394:");
416 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
417 vendor_id);
418 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
419 model_id);
420 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
421 specifier_id);
422 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
423 version);
424
425 add_wildcard(alias);
426 return 1;
427}
428
429/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
430static int do_pci_entry(const char *filename,
431 void *symval, char *alias)
432{
433 /* Class field can be divided into these three. */
434 unsigned char baseclass, subclass, interface,
435 baseclass_mask, subclass_mask, interface_mask;
436
437 DEF_FIELD(symval, pci_device_id, vendor);
438 DEF_FIELD(symval, pci_device_id, device);
439 DEF_FIELD(symval, pci_device_id, subvendor);
440 DEF_FIELD(symval, pci_device_id, subdevice);
441 DEF_FIELD(symval, pci_device_id, class);
442 DEF_FIELD(symval, pci_device_id, class_mask);
443
444 strcpy(alias, "pci:");
445 ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
446 ADD(alias, "d", device != PCI_ANY_ID, device);
447 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
448 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
449
450 baseclass = (class) >> 16;
451 baseclass_mask = (class_mask) >> 16;
452 subclass = (class) >> 8;
453 subclass_mask = (class_mask) >> 8;
454 interface = class;
455 interface_mask = class_mask;
456
457 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
458 || (subclass_mask != 0 && subclass_mask != 0xFF)
459 || (interface_mask != 0 && interface_mask != 0xFF)) {
460 warn("Can't handle masks in %s:%04X\n",
461 filename, class_mask);
462 return 0;
463 }
464
465 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
466 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
467 ADD(alias, "i", interface_mask == 0xFF, interface);
468 add_wildcard(alias);
469 return 1;
470}
471
472/* looks like: "ccw:tNmNdtNdmN" */
473static int do_ccw_entry(const char *filename,
474 void *symval, char *alias)
475{
476 DEF_FIELD(symval, ccw_device_id, match_flags);
477 DEF_FIELD(symval, ccw_device_id, cu_type);
478 DEF_FIELD(symval, ccw_device_id, cu_model);
479 DEF_FIELD(symval, ccw_device_id, dev_type);
480 DEF_FIELD(symval, ccw_device_id, dev_model);
481
482 strcpy(alias, "ccw:");
483 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
484 cu_type);
485 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
486 cu_model);
487 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
488 dev_type);
489 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
490 dev_model);
491 add_wildcard(alias);
492 return 1;
493}
494
495/* looks like: "ap:tN" */
496static int do_ap_entry(const char *filename,
497 void *symval, char *alias)
498{
499 DEF_FIELD(symval, ap_device_id, dev_type);
500
501 sprintf(alias, "ap:t%02X*", dev_type);
502 return 1;
503}
504
505/* looks like: "css:tN" */
506static int do_css_entry(const char *filename,
507 void *symval, char *alias)
508{
509 DEF_FIELD(symval, css_device_id, type);
510
511 sprintf(alias, "css:t%01X", type);
512 return 1;
513}
514
515/* Looks like: "serio:tyNprNidNexN" */
516static int do_serio_entry(const char *filename,
517 void *symval, char *alias)
518{
519 DEF_FIELD(symval, serio_device_id, type);
520 DEF_FIELD(symval, serio_device_id, proto);
521 DEF_FIELD(symval, serio_device_id, id);
522 DEF_FIELD(symval, serio_device_id, extra);
523
524 strcpy(alias, "serio:");
525 ADD(alias, "ty", type != SERIO_ANY, type);
526 ADD(alias, "pr", proto != SERIO_ANY, proto);
527 ADD(alias, "id", id != SERIO_ANY, id);
528 ADD(alias, "ex", extra != SERIO_ANY, extra);
529
530 add_wildcard(alias);
531 return 1;
532}
533
534/* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or
535 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if)
536 *
537 * NOTE: Each driver should use one of the following : _HID, _CIDs
538 * or _CLS. Also, bb, ss, and pp can be substituted with ??
539 * as don't care byte.
540 */
541static int do_acpi_entry(const char *filename,
542 void *symval, char *alias)
543{
544 DEF_FIELD_ADDR(symval, acpi_device_id, id);
545 DEF_FIELD_ADDR(symval, acpi_device_id, cls);
546 DEF_FIELD_ADDR(symval, acpi_device_id, cls_msk);
547
548 if (id && strlen((const char *)*id))
549 sprintf(alias, "acpi*:%s:*", *id);
550 else if (cls) {
551 int i, byte_shift, cnt = 0;
552 unsigned int msk;
553
554 sprintf(&alias[cnt], "acpi*:");
555 cnt = 6;
556 for (i = 1; i <= 3; i++) {
557 byte_shift = 8 * (3-i);
558 msk = (*cls_msk >> byte_shift) & 0xFF;
559 if (msk)
560 sprintf(&alias[cnt], "%02x",
561 (*cls >> byte_shift) & 0xFF);
562 else
563 sprintf(&alias[cnt], "??");
564 cnt += 2;
565 }
566 sprintf(&alias[cnt], ":*");
567 }
568 return 1;
569}
570
571/* looks like: "pnp:dD" */
572static void do_pnp_device_entry(void *symval, unsigned long size,
573 struct module *mod)
574{
575 const unsigned long id_size = SIZE_pnp_device_id;
576 const unsigned int count = (size / id_size)-1;
577 unsigned int i;
578
579 device_id_check(mod->name, "pnp", size, id_size, symval);
580
581 for (i = 0; i < count; i++) {
582 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id);
583 char acpi_id[sizeof(*id)];
584 int j;
585
586 buf_printf(&mod->dev_table_buf,
587 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
588
589 /* fix broken pnp bus lowercasing */
590 for (j = 0; j < sizeof(acpi_id); j++)
591 acpi_id[j] = toupper((*id)[j]);
592 buf_printf(&mod->dev_table_buf,
593 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
594 }
595}
596
597/* looks like: "pnp:dD" for every device of the card */
598static void do_pnp_card_entries(void *symval, unsigned long size,
599 struct module *mod)
600{
601 const unsigned long id_size = SIZE_pnp_card_device_id;
602 const unsigned int count = (size / id_size)-1;
603 unsigned int i;
604
605 device_id_check(mod->name, "pnp", size, id_size, symval);
606
607 for (i = 0; i < count; i++) {
608 unsigned int j;
609 DEF_FIELD_ADDR(symval + i * id_size, pnp_card_device_id, devs);
610
611 for (j = 0; j < PNP_MAX_DEVICES; j++) {
612 const char *id = (char *)(*devs)[j].id;
613 int i2, j2;
614 int dup = 0;
615
616 if (!id[0])
617 break;
618
619 /* find duplicate, already added value */
620 for (i2 = 0; i2 < i && !dup; i2++) {
621 DEF_FIELD_ADDR_VAR(symval + i2 * id_size,
622 pnp_card_device_id,
623 devs, devs_dup);
624
625 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
626 const char *id2 =
627 (char *)(*devs_dup)[j2].id;
628
629 if (!id2[0])
630 break;
631
632 if (!strcmp(id, id2)) {
633 dup = 1;
634 break;
635 }
636 }
637 }
638
639 /* add an individual alias for every device entry */
640 if (!dup) {
641 char acpi_id[PNP_ID_LEN];
642 int k;
643
644 buf_printf(&mod->dev_table_buf,
645 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
646
647 /* fix broken pnp bus lowercasing */
648 for (k = 0; k < sizeof(acpi_id); k++)
649 acpi_id[k] = toupper(id[k]);
650 buf_printf(&mod->dev_table_buf,
651 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
652 }
653 }
654 }
655}
656
657/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
658static int do_pcmcia_entry(const char *filename,
659 void *symval, char *alias)
660{
661 unsigned int i;
662 DEF_FIELD(symval, pcmcia_device_id, match_flags);
663 DEF_FIELD(symval, pcmcia_device_id, manf_id);
664 DEF_FIELD(symval, pcmcia_device_id, card_id);
665 DEF_FIELD(symval, pcmcia_device_id, func_id);
666 DEF_FIELD(symval, pcmcia_device_id, function);
667 DEF_FIELD(symval, pcmcia_device_id, device_no);
668 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
669
670 for (i=0; i<4; i++) {
671 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]);
672 }
673
674 strcpy(alias, "pcmcia:");
675 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
676 manf_id);
677 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
678 card_id);
679 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
680 func_id);
681 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
682 function);
683 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
684 device_no);
685 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]);
686 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]);
687 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]);
688 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]);
689
690 add_wildcard(alias);
691 return 1;
692}
693
694static int do_vio_entry(const char *filename, void *symval,
695 char *alias)
696{
697 char *tmp;
698 DEF_FIELD_ADDR(symval, vio_device_id, type);
699 DEF_FIELD_ADDR(symval, vio_device_id, compat);
700
701 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
702 (*compat)[0] ? *compat : "*");
703
704 /* Replace all whitespace with underscores */
705 for (tmp = alias; tmp && *tmp; tmp++)
706 if (isspace (*tmp))
707 *tmp = '_';
708
709 add_wildcard(alias);
710 return 1;
711}
712
713#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
714
715static void do_input(char *alias,
716 kernel_ulong_t *arr, unsigned int min, unsigned int max)
717{
718 unsigned int i;
719
720 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++)
721 arr[i] = TO_NATIVE(arr[i]);
722 for (i = min; i < max; i++)
723 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
724 sprintf(alias + strlen(alias), "%X,*", i);
725}
726
727/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
728static int do_input_entry(const char *filename, void *symval,
729 char *alias)
730{
731 DEF_FIELD(symval, input_device_id, flags);
732 DEF_FIELD(symval, input_device_id, bustype);
733 DEF_FIELD(symval, input_device_id, vendor);
734 DEF_FIELD(symval, input_device_id, product);
735 DEF_FIELD(symval, input_device_id, version);
736 DEF_FIELD_ADDR(symval, input_device_id, evbit);
737 DEF_FIELD_ADDR(symval, input_device_id, keybit);
738 DEF_FIELD_ADDR(symval, input_device_id, relbit);
739 DEF_FIELD_ADDR(symval, input_device_id, absbit);
740 DEF_FIELD_ADDR(symval, input_device_id, mscbit);
741 DEF_FIELD_ADDR(symval, input_device_id, ledbit);
742 DEF_FIELD_ADDR(symval, input_device_id, sndbit);
743 DEF_FIELD_ADDR(symval, input_device_id, ffbit);
744 DEF_FIELD_ADDR(symval, input_device_id, swbit);
745
746 sprintf(alias, "input:");
747
748 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
749 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
750 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
751 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
752
753 sprintf(alias + strlen(alias), "-e*");
754 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
755 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
756 sprintf(alias + strlen(alias), "k*");
757 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
758 do_input(alias, *keybit,
759 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
760 INPUT_DEVICE_ID_KEY_MAX);
761 sprintf(alias + strlen(alias), "r*");
762 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
763 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
764 sprintf(alias + strlen(alias), "a*");
765 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
766 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
767 sprintf(alias + strlen(alias), "m*");
768 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
769 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
770 sprintf(alias + strlen(alias), "l*");
771 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
772 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
773 sprintf(alias + strlen(alias), "s*");
774 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
775 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
776 sprintf(alias + strlen(alias), "f*");
777 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
778 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
779 sprintf(alias + strlen(alias), "w*");
780 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
781 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
782 return 1;
783}
784
785static int do_eisa_entry(const char *filename, void *symval,
786 char *alias)
787{
788 DEF_FIELD_ADDR(symval, eisa_device_id, sig);
789 if (sig[0])
790 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig);
791 else
792 strcat(alias, "*");
793 return 1;
794}
795
796/* Looks like: parisc:tNhvNrevNsvN */
797static int do_parisc_entry(const char *filename, void *symval,
798 char *alias)
799{
800 DEF_FIELD(symval, parisc_device_id, hw_type);
801 DEF_FIELD(symval, parisc_device_id, hversion);
802 DEF_FIELD(symval, parisc_device_id, hversion_rev);
803 DEF_FIELD(symval, parisc_device_id, sversion);
804
805 strcpy(alias, "parisc:");
806 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
807 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
808 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
809 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
810
811 add_wildcard(alias);
812 return 1;
813}
814
815/* Looks like: sdio:cNvNdN. */
816static int do_sdio_entry(const char *filename,
817 void *symval, char *alias)
818{
819 DEF_FIELD(symval, sdio_device_id, class);
820 DEF_FIELD(symval, sdio_device_id, vendor);
821 DEF_FIELD(symval, sdio_device_id, device);
822
823 strcpy(alias, "sdio:");
824 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
825 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
826 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
827 add_wildcard(alias);
828 return 1;
829}
830
831/* Looks like: ssb:vNidNrevN. */
832static int do_ssb_entry(const char *filename,
833 void *symval, char *alias)
834{
835 DEF_FIELD(symval, ssb_device_id, vendor);
836 DEF_FIELD(symval, ssb_device_id, coreid);
837 DEF_FIELD(symval, ssb_device_id, revision);
838
839 strcpy(alias, "ssb:");
840 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
841 ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
842 ADD(alias, "rev", revision != SSB_ANY_REV, revision);
843 add_wildcard(alias);
844 return 1;
845}
846
847/* Looks like: bcma:mNidNrevNclN. */
848static int do_bcma_entry(const char *filename,
849 void *symval, char *alias)
850{
851 DEF_FIELD(symval, bcma_device_id, manuf);
852 DEF_FIELD(symval, bcma_device_id, id);
853 DEF_FIELD(symval, bcma_device_id, rev);
854 DEF_FIELD(symval, bcma_device_id, class);
855
856 strcpy(alias, "bcma:");
857 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
858 ADD(alias, "id", id != BCMA_ANY_ID, id);
859 ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
860 ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
861 add_wildcard(alias);
862 return 1;
863}
864
865/* Looks like: virtio:dNvN */
866static int do_virtio_entry(const char *filename, void *symval,
867 char *alias)
868{
869 DEF_FIELD(symval, virtio_device_id, device);
870 DEF_FIELD(symval, virtio_device_id, vendor);
871
872 strcpy(alias, "virtio:");
873 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
874 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
875
876 add_wildcard(alias);
877 return 1;
878}
879
880/*
881 * Looks like: vmbus:guid
882 * Each byte of the guid will be represented by two hex characters
883 * in the name.
884 */
885
886static int do_vmbus_entry(const char *filename, void *symval,
887 char *alias)
888{
889 int i;
890 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
891 char guid_name[(sizeof(*guid) + 1) * 2];
892
893 for (i = 0; i < (sizeof(*guid) * 2); i += 2)
894 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2]));
895
896 strcpy(alias, "vmbus:");
897 strcat(alias, guid_name);
898
899 return 1;
900}
901
902/* Looks like: rpmsg:S */
903static int do_rpmsg_entry(const char *filename, void *symval,
904 char *alias)
905{
906 DEF_FIELD_ADDR(symval, rpmsg_device_id, name);
907 sprintf(alias, RPMSG_DEVICE_MODALIAS_FMT, *name);
908
909 return 1;
910}
911
912/* Looks like: i2c:S */
913static int do_i2c_entry(const char *filename, void *symval,
914 char *alias)
915{
916 DEF_FIELD_ADDR(symval, i2c_device_id, name);
917 sprintf(alias, I2C_MODULE_PREFIX "%s", *name);
918
919 return 1;
920}
921
922static int do_i3c_entry(const char *filename, void *symval,
923 char *alias)
924{
925 DEF_FIELD(symval, i3c_device_id, match_flags);
926 DEF_FIELD(symval, i3c_device_id, dcr);
927 DEF_FIELD(symval, i3c_device_id, manuf_id);
928 DEF_FIELD(symval, i3c_device_id, part_id);
929 DEF_FIELD(symval, i3c_device_id, extra_info);
930
931 strcpy(alias, "i3c:");
932 ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr);
933 ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id);
934 ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id);
935 ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info);
936
937 return 1;
938}
939
940/* Looks like: spi:S */
941static int do_spi_entry(const char *filename, void *symval,
942 char *alias)
943{
944 DEF_FIELD_ADDR(symval, spi_device_id, name);
945 sprintf(alias, SPI_MODULE_PREFIX "%s", *name);
946
947 return 1;
948}
949
950static const struct dmifield {
951 const char *prefix;
952 int field;
953} dmi_fields[] = {
954 { "bvn", DMI_BIOS_VENDOR },
955 { "bvr", DMI_BIOS_VERSION },
956 { "bd", DMI_BIOS_DATE },
957 { "br", DMI_BIOS_RELEASE },
958 { "efr", DMI_EC_FIRMWARE_RELEASE },
959 { "svn", DMI_SYS_VENDOR },
960 { "pn", DMI_PRODUCT_NAME },
961 { "pvr", DMI_PRODUCT_VERSION },
962 { "rvn", DMI_BOARD_VENDOR },
963 { "rn", DMI_BOARD_NAME },
964 { "rvr", DMI_BOARD_VERSION },
965 { "cvn", DMI_CHASSIS_VENDOR },
966 { "ct", DMI_CHASSIS_TYPE },
967 { "cvr", DMI_CHASSIS_VERSION },
968 { NULL, DMI_NONE }
969};
970
971static void dmi_ascii_filter(char *d, const char *s)
972{
973 /* Filter out characters we don't want to see in the modalias string */
974 for (; *s; s++)
975 if (*s > ' ' && *s < 127 && *s != ':')
976 *(d++) = *s;
977
978 *d = 0;
979}
980
981
982static int do_dmi_entry(const char *filename, void *symval,
983 char *alias)
984{
985 int i, j;
986 DEF_FIELD_ADDR(symval, dmi_system_id, matches);
987 sprintf(alias, "dmi*");
988
989 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
990 for (j = 0; j < 4; j++) {
991 if ((*matches)[j].slot &&
992 (*matches)[j].slot == dmi_fields[i].field) {
993 sprintf(alias + strlen(alias), ":%s*",
994 dmi_fields[i].prefix);
995 dmi_ascii_filter(alias + strlen(alias),
996 (*matches)[j].substr);
997 strcat(alias, "*");
998 }
999 }
1000 }
1001
1002 strcat(alias, ":");
1003 return 1;
1004}
1005
1006static int do_platform_entry(const char *filename,
1007 void *symval, char *alias)
1008{
1009 DEF_FIELD_ADDR(symval, platform_device_id, name);
1010 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name);
1011 return 1;
1012}
1013
1014static int do_mdio_entry(const char *filename,
1015 void *symval, char *alias)
1016{
1017 int i;
1018 DEF_FIELD(symval, mdio_device_id, phy_id);
1019 DEF_FIELD(symval, mdio_device_id, phy_id_mask);
1020
1021 alias += sprintf(alias, MDIO_MODULE_PREFIX);
1022
1023 for (i = 0; i < 32; i++) {
1024 if (!((phy_id_mask >> (31-i)) & 1))
1025 *(alias++) = '?';
1026 else if ((phy_id >> (31-i)) & 1)
1027 *(alias++) = '1';
1028 else
1029 *(alias++) = '0';
1030 }
1031
1032 /* Terminate the string */
1033 *alias = 0;
1034
1035 return 1;
1036}
1037
1038/* Looks like: zorro:iN. */
1039static int do_zorro_entry(const char *filename, void *symval,
1040 char *alias)
1041{
1042 DEF_FIELD(symval, zorro_device_id, id);
1043 strcpy(alias, "zorro:");
1044 ADD(alias, "i", id != ZORRO_WILDCARD, id);
1045 return 1;
1046}
1047
1048/* looks like: "pnp:dD" */
1049static int do_isapnp_entry(const char *filename,
1050 void *symval, char *alias)
1051{
1052 DEF_FIELD(symval, isapnp_device_id, vendor);
1053 DEF_FIELD(symval, isapnp_device_id, function);
1054 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
1055 'A' + ((vendor >> 2) & 0x3f) - 1,
1056 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
1057 'A' + ((vendor >> 8) & 0x1f) - 1,
1058 (function >> 4) & 0x0f, function & 0x0f,
1059 (function >> 12) & 0x0f, (function >> 8) & 0x0f);
1060 return 1;
1061}
1062
1063/* Looks like: "ipack:fNvNdN". */
1064static int do_ipack_entry(const char *filename,
1065 void *symval, char *alias)
1066{
1067 DEF_FIELD(symval, ipack_device_id, format);
1068 DEF_FIELD(symval, ipack_device_id, vendor);
1069 DEF_FIELD(symval, ipack_device_id, device);
1070 strcpy(alias, "ipack:");
1071 ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
1072 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
1073 ADD(alias, "d", device != IPACK_ANY_ID, device);
1074 add_wildcard(alias);
1075 return 1;
1076}
1077
1078/*
1079 * Append a match expression for a single masked hex digit.
1080 * outp points to a pointer to the character at which to append.
1081 * *outp is updated on return to point just after the appended text,
1082 * to facilitate further appending.
1083 */
1084static void append_nibble_mask(char **outp,
1085 unsigned int nibble, unsigned int mask)
1086{
1087 char *p = *outp;
1088 unsigned int i;
1089
1090 switch (mask) {
1091 case 0:
1092 *p++ = '?';
1093 break;
1094
1095 case 0xf:
1096 p += sprintf(p, "%X", nibble);
1097 break;
1098
1099 default:
1100 /*
1101 * Dumbly emit a match pattern for all possible matching
1102 * digits. This could be improved in some cases using ranges,
1103 * but it has the advantage of being trivially correct, and is
1104 * often optimal.
1105 */
1106 *p++ = '[';
1107 for (i = 0; i < 0x10; i++)
1108 if ((i & mask) == nibble)
1109 p += sprintf(p, "%X", i);
1110 *p++ = ']';
1111 }
1112
1113 /* Ensure that the string remains NUL-terminated: */
1114 *p = '\0';
1115
1116 /* Advance the caller's end-of-string pointer: */
1117 *outp = p;
1118}
1119
1120/*
1121 * looks like: "amba:dN"
1122 *
1123 * N is exactly 8 digits, where each is an upper-case hex digit, or
1124 * a ? or [] pattern matching exactly one digit.
1125 */
1126static int do_amba_entry(const char *filename,
1127 void *symval, char *alias)
1128{
1129 unsigned int digit;
1130 char *p = alias;
1131 DEF_FIELD(symval, amba_id, id);
1132 DEF_FIELD(symval, amba_id, mask);
1133
1134 if ((id & mask) != id)
1135 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1136 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1137 filename, id, mask);
1138
1139 p += sprintf(alias, "amba:d");
1140 for (digit = 0; digit < 8; digit++)
1141 append_nibble_mask(&p,
1142 (id >> (4 * (7 - digit))) & 0xf,
1143 (mask >> (4 * (7 - digit))) & 0xf);
1144
1145 return 1;
1146}
1147
1148/*
1149 * looks like: "mipscdmm:tN"
1150 *
1151 * N is exactly 2 digits, where each is an upper-case hex digit, or
1152 * a ? or [] pattern matching exactly one digit.
1153 */
1154static int do_mips_cdmm_entry(const char *filename,
1155 void *symval, char *alias)
1156{
1157 DEF_FIELD(symval, mips_cdmm_device_id, type);
1158
1159 sprintf(alias, "mipscdmm:t%02X*", type);
1160 return 1;
1161}
1162
1163/* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
1164 * All fields are numbers. It would be nicer to use strings for vendor
1165 * and feature, but getting those out of the build system here is too
1166 * complicated.
1167 */
1168
1169static int do_x86cpu_entry(const char *filename, void *symval,
1170 char *alias)
1171{
1172 DEF_FIELD(symval, x86_cpu_id, feature);
1173 DEF_FIELD(symval, x86_cpu_id, family);
1174 DEF_FIELD(symval, x86_cpu_id, model);
1175 DEF_FIELD(symval, x86_cpu_id, vendor);
1176
1177 strcpy(alias, "cpu:type:x86,");
1178 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
1179 ADD(alias, "fam", family != X86_FAMILY_ANY, family);
1180 ADD(alias, "mod", model != X86_MODEL_ANY, model);
1181 strcat(alias, ":feature:*");
1182 if (feature != X86_FEATURE_ANY)
1183 sprintf(alias + strlen(alias), "%04X*", feature);
1184 return 1;
1185}
1186
1187/* LOOKS like cpu:type:*:feature:*FEAT* */
1188static int do_cpu_entry(const char *filename, void *symval, char *alias)
1189{
1190 DEF_FIELD(symval, cpu_feature, feature);
1191
1192 sprintf(alias, "cpu:type:*:feature:*%04X*", feature);
1193 return 1;
1194}
1195
1196/* Looks like: mei:S:uuid:N:* */
1197static int do_mei_entry(const char *filename, void *symval,
1198 char *alias)
1199{
1200 DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
1201 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid);
1202 DEF_FIELD(symval, mei_cl_device_id, version);
1203
1204 sprintf(alias, MEI_CL_MODULE_PREFIX);
1205 sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*");
1206 add_uuid(alias, *uuid);
1207 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version);
1208
1209 strcat(alias, ":*");
1210
1211 return 1;
1212}
1213
1214/* Looks like: rapidio:vNdNavNadN */
1215static int do_rio_entry(const char *filename,
1216 void *symval, char *alias)
1217{
1218 DEF_FIELD(symval, rio_device_id, did);
1219 DEF_FIELD(symval, rio_device_id, vid);
1220 DEF_FIELD(symval, rio_device_id, asm_did);
1221 DEF_FIELD(symval, rio_device_id, asm_vid);
1222
1223 strcpy(alias, "rapidio:");
1224 ADD(alias, "v", vid != RIO_ANY_ID, vid);
1225 ADD(alias, "d", did != RIO_ANY_ID, did);
1226 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
1227 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
1228
1229 add_wildcard(alias);
1230 return 1;
1231}
1232
1233/* Looks like: ulpi:vNpN */
1234static int do_ulpi_entry(const char *filename, void *symval,
1235 char *alias)
1236{
1237 DEF_FIELD(symval, ulpi_device_id, vendor);
1238 DEF_FIELD(symval, ulpi_device_id, product);
1239
1240 sprintf(alias, "ulpi:v%04xp%04x", vendor, product);
1241
1242 return 1;
1243}
1244
1245/* Looks like: hdaudio:vNrNaN */
1246static int do_hda_entry(const char *filename, void *symval, char *alias)
1247{
1248 DEF_FIELD(symval, hda_device_id, vendor_id);
1249 DEF_FIELD(symval, hda_device_id, rev_id);
1250 DEF_FIELD(symval, hda_device_id, api_version);
1251
1252 strcpy(alias, "hdaudio:");
1253 ADD(alias, "v", vendor_id != 0, vendor_id);
1254 ADD(alias, "r", rev_id != 0, rev_id);
1255 ADD(alias, "a", api_version != 0, api_version);
1256
1257 add_wildcard(alias);
1258 return 1;
1259}
1260
1261/* Looks like: sdw:mNpNvNcN */
1262static int do_sdw_entry(const char *filename, void *symval, char *alias)
1263{
1264 DEF_FIELD(symval, sdw_device_id, mfg_id);
1265 DEF_FIELD(symval, sdw_device_id, part_id);
1266 DEF_FIELD(symval, sdw_device_id, sdw_version);
1267 DEF_FIELD(symval, sdw_device_id, class_id);
1268
1269 strcpy(alias, "sdw:");
1270 ADD(alias, "m", mfg_id != 0, mfg_id);
1271 ADD(alias, "p", part_id != 0, part_id);
1272 ADD(alias, "v", sdw_version != 0, sdw_version);
1273 ADD(alias, "c", class_id != 0, class_id);
1274
1275 add_wildcard(alias);
1276 return 1;
1277}
1278
1279/* Looks like: fsl-mc:vNdN */
1280static int do_fsl_mc_entry(const char *filename, void *symval,
1281 char *alias)
1282{
1283 DEF_FIELD(symval, fsl_mc_device_id, vendor);
1284 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type);
1285
1286 sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type);
1287 return 1;
1288}
1289
1290/* Looks like: tbsvc:kSpNvNrN */
1291static int do_tbsvc_entry(const char *filename, void *symval, char *alias)
1292{
1293 DEF_FIELD(symval, tb_service_id, match_flags);
1294 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key);
1295 DEF_FIELD(symval, tb_service_id, protocol_id);
1296 DEF_FIELD(symval, tb_service_id, protocol_version);
1297 DEF_FIELD(symval, tb_service_id, protocol_revision);
1298
1299 strcpy(alias, "tbsvc:");
1300 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY)
1301 sprintf(alias + strlen(alias), "k%s", *protocol_key);
1302 else
1303 strcat(alias + strlen(alias), "k*");
1304 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id);
1305 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION,
1306 protocol_version);
1307 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION,
1308 protocol_revision);
1309
1310 add_wildcard(alias);
1311 return 1;
1312}
1313
1314/* Looks like: typec:idNmN */
1315static int do_typec_entry(const char *filename, void *symval, char *alias)
1316{
1317 DEF_FIELD(symval, typec_device_id, svid);
1318 DEF_FIELD(symval, typec_device_id, mode);
1319
1320 sprintf(alias, "typec:id%04X", svid);
1321 ADD(alias, "m", mode != TYPEC_ANY_MODE, mode);
1322
1323 return 1;
1324}
1325
1326/* Looks like: tee:uuid */
1327static int do_tee_entry(const char *filename, void *symval, char *alias)
1328{
1329 DEF_FIELD(symval, tee_client_device_id, uuid);
1330
1331 sprintf(alias, "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
1332 uuid.b[0], uuid.b[1], uuid.b[2], uuid.b[3], uuid.b[4],
1333 uuid.b[5], uuid.b[6], uuid.b[7], uuid.b[8], uuid.b[9],
1334 uuid.b[10], uuid.b[11], uuid.b[12], uuid.b[13], uuid.b[14],
1335 uuid.b[15]);
1336
1337 add_wildcard(alias);
1338 return 1;
1339}
1340
1341/* Looks like: wmi:guid */
1342static int do_wmi_entry(const char *filename, void *symval, char *alias)
1343{
1344 int len;
1345 DEF_FIELD_ADDR(symval, wmi_device_id, guid_string);
1346
1347 if (strlen(*guid_string) != UUID_STRING_LEN) {
1348 warn("Invalid WMI device id 'wmi:%s' in '%s'\n",
1349 *guid_string, filename);
1350 return 0;
1351 }
1352
1353 len = snprintf(alias, ALIAS_SIZE, WMI_MODULE_PREFIX "%s", *guid_string);
1354 if (len < 0 || len >= ALIAS_SIZE) {
1355 warn("Could not generate all MODULE_ALIAS's in '%s'\n",
1356 filename);
1357 return 0;
1358 }
1359 return 1;
1360}
1361
1362/* Looks like: mhi:S */
1363static int do_mhi_entry(const char *filename, void *symval, char *alias)
1364{
1365 DEF_FIELD_ADDR(symval, mhi_device_id, chan);
1366 sprintf(alias, MHI_DEVICE_MODALIAS_FMT, *chan);
1367 return 1;
1368}
1369
1370static int do_auxiliary_entry(const char *filename, void *symval, char *alias)
1371{
1372 DEF_FIELD_ADDR(symval, auxiliary_device_id, name);
1373 sprintf(alias, AUXILIARY_MODULE_PREFIX "%s", *name);
1374
1375 return 1;
1376}
1377
1378/*
1379 * Looks like: ssam:dNcNtNiNfN
1380 *
1381 * N is exactly 2 digits, where each is an upper-case hex digit.
1382 */
1383static int do_ssam_entry(const char *filename, void *symval, char *alias)
1384{
1385 DEF_FIELD(symval, ssam_device_id, match_flags);
1386 DEF_FIELD(symval, ssam_device_id, domain);
1387 DEF_FIELD(symval, ssam_device_id, category);
1388 DEF_FIELD(symval, ssam_device_id, target);
1389 DEF_FIELD(symval, ssam_device_id, instance);
1390 DEF_FIELD(symval, ssam_device_id, function);
1391
1392 sprintf(alias, "ssam:d%02Xc%02X", domain, category);
1393 ADD(alias, "t", match_flags & SSAM_MATCH_TARGET, target);
1394 ADD(alias, "i", match_flags & SSAM_MATCH_INSTANCE, instance);
1395 ADD(alias, "f", match_flags & SSAM_MATCH_FUNCTION, function);
1396
1397 return 1;
1398}
1399
1400/* Looks like: dfl:tNfN */
1401static int do_dfl_entry(const char *filename, void *symval, char *alias)
1402{
1403 DEF_FIELD(symval, dfl_device_id, type);
1404 DEF_FIELD(symval, dfl_device_id, feature_id);
1405
1406 sprintf(alias, "dfl:t%04Xf%04X", type, feature_id);
1407
1408 add_wildcard(alias);
1409 return 1;
1410}
1411
1412/* Does namelen bytes of name exactly match the symbol? */
1413static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1414{
1415 if (namelen != strlen(symbol))
1416 return false;
1417
1418 return memcmp(name, symbol, namelen) == 0;
1419}
1420
1421static void do_table(void *symval, unsigned long size,
1422 unsigned long id_size,
1423 const char *device_id,
1424 int (*do_entry)(const char *filename, void *symval, char *alias),
1425 struct module *mod)
1426{
1427 unsigned int i;
1428 char alias[ALIAS_SIZE];
1429
1430 device_id_check(mod->name, device_id, size, id_size, symval);
1431 /* Leave last one: it's the terminator. */
1432 size -= id_size;
1433
1434 for (i = 0; i < size; i += id_size) {
1435 if (do_entry(mod->name, symval+i, alias)) {
1436 buf_printf(&mod->dev_table_buf,
1437 "MODULE_ALIAS(\"%s\");\n", alias);
1438 }
1439 }
1440}
1441
1442static const struct devtable devtable[] = {
1443 {"hid", SIZE_hid_device_id, do_hid_entry},
1444 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry},
1445 {"pci", SIZE_pci_device_id, do_pci_entry},
1446 {"ccw", SIZE_ccw_device_id, do_ccw_entry},
1447 {"ap", SIZE_ap_device_id, do_ap_entry},
1448 {"css", SIZE_css_device_id, do_css_entry},
1449 {"serio", SIZE_serio_device_id, do_serio_entry},
1450 {"acpi", SIZE_acpi_device_id, do_acpi_entry},
1451 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry},
1452 {"vio", SIZE_vio_device_id, do_vio_entry},
1453 {"input", SIZE_input_device_id, do_input_entry},
1454 {"eisa", SIZE_eisa_device_id, do_eisa_entry},
1455 {"parisc", SIZE_parisc_device_id, do_parisc_entry},
1456 {"sdio", SIZE_sdio_device_id, do_sdio_entry},
1457 {"ssb", SIZE_ssb_device_id, do_ssb_entry},
1458 {"bcma", SIZE_bcma_device_id, do_bcma_entry},
1459 {"virtio", SIZE_virtio_device_id, do_virtio_entry},
1460 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry},
1461 {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry},
1462 {"i2c", SIZE_i2c_device_id, do_i2c_entry},
1463 {"i3c", SIZE_i3c_device_id, do_i3c_entry},
1464 {"spi", SIZE_spi_device_id, do_spi_entry},
1465 {"dmi", SIZE_dmi_system_id, do_dmi_entry},
1466 {"platform", SIZE_platform_device_id, do_platform_entry},
1467 {"mdio", SIZE_mdio_device_id, do_mdio_entry},
1468 {"zorro", SIZE_zorro_device_id, do_zorro_entry},
1469 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry},
1470 {"ipack", SIZE_ipack_device_id, do_ipack_entry},
1471 {"amba", SIZE_amba_id, do_amba_entry},
1472 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry},
1473 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry},
1474 {"cpu", SIZE_cpu_feature, do_cpu_entry},
1475 {"mei", SIZE_mei_cl_device_id, do_mei_entry},
1476 {"rapidio", SIZE_rio_device_id, do_rio_entry},
1477 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry},
1478 {"hdaudio", SIZE_hda_device_id, do_hda_entry},
1479 {"sdw", SIZE_sdw_device_id, do_sdw_entry},
1480 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry},
1481 {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry},
1482 {"typec", SIZE_typec_device_id, do_typec_entry},
1483 {"tee", SIZE_tee_client_device_id, do_tee_entry},
1484 {"wmi", SIZE_wmi_device_id, do_wmi_entry},
1485 {"mhi", SIZE_mhi_device_id, do_mhi_entry},
1486 {"auxiliary", SIZE_auxiliary_device_id, do_auxiliary_entry},
1487 {"ssam", SIZE_ssam_device_id, do_ssam_entry},
1488 {"dfl", SIZE_dfl_device_id, do_dfl_entry},
1489};
1490
1491/* Create MODULE_ALIAS() statements.
1492 * At this time, we cannot write the actual output C source yet,
1493 * so we write into the mod->dev_table_buf buffer. */
1494void handle_moddevtable(struct module *mod, struct elf_info *info,
1495 Elf_Sym *sym, const char *symname)
1496{
1497 void *symval;
1498 char *zeros = NULL;
1499 const char *name, *identifier;
1500 unsigned int namelen;
1501
1502 /* We're looking for a section relative symbol */
1503 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1504 return;
1505
1506 /* We're looking for an object */
1507 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1508 return;
1509
1510 /* All our symbols are of form __mod_<name>__<identifier>_device_table. */
1511 if (strncmp(symname, "__mod_", strlen("__mod_")))
1512 return;
1513 name = symname + strlen("__mod_");
1514 namelen = strlen(name);
1515 if (namelen < strlen("_device_table"))
1516 return;
1517 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1518 return;
1519 identifier = strstr(name, "__");
1520 if (!identifier)
1521 return;
1522 namelen = identifier - name;
1523
1524 /* Handle all-NULL symbols allocated into .bss */
1525 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1526 zeros = calloc(1, sym->st_size);
1527 symval = zeros;
1528 } else {
1529 symval = (void *)info->hdr
1530 + info->sechdrs[get_secindex(info, sym)].sh_offset
1531 + sym->st_value;
1532 }
1533
1534 /* First handle the "special" cases */
1535 if (sym_is(name, namelen, "usb"))
1536 do_usb_table(symval, sym->st_size, mod);
1537 if (sym_is(name, namelen, "of"))
1538 do_of_table(symval, sym->st_size, mod);
1539 else if (sym_is(name, namelen, "pnp"))
1540 do_pnp_device_entry(symval, sym->st_size, mod);
1541 else if (sym_is(name, namelen, "pnp_card"))
1542 do_pnp_card_entries(symval, sym->st_size, mod);
1543 else {
1544 int i;
1545
1546 for (i = 0; i < ARRAY_SIZE(devtable); i++) {
1547 const struct devtable *p = &devtable[i];
1548
1549 if (sym_is(name, namelen, p->device_id)) {
1550 do_table(symval, sym->st_size, p->id_size,
1551 p->device_id, p->do_entry, mod);
1552 break;
1553 }
1554 }
1555 }
1556 free(zeros);
1557}
1558
1559/* Now add out buffered information to the generated C source */
1560void add_moddevtable(struct buffer *buf, struct module *mod)
1561{
1562 buf_printf(buf, "\n");
1563 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1564 free(mod->dev_table_buf.p);
1565}