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
19 typedef Elf32_Addr kernel_ulong_t;
20 #define BITS_PER_LONG 32
21 #else
22 typedef 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
34 typedef uint32_t __u32;
35 typedef uint16_t __u16;
36 typedef unsigned char __u8;
37
38 /* UUID types for backward compatibility, don't use in new code */
39 typedef struct {
40 __u8 b[16];
41 } guid_t;
42
43 typedef struct {
44 __u8 b[16];
45 } uuid_t;
46
47 #define UUID_STRING_LEN 36
48
49 /* MEI UUID type, don't use anywhere else */
50 typedef struct {
51 __u8 b[16];
52 } uuid_le;
53
54 /* Big exception to the "don't include kernel headers into userspace, which
55 * even potentially has different endianness and word sizes, since
56 * we handle those differences explicitly below */
57 #include "../../include/linux/mod_devicetable.h"
58
59 /* This array collects all instances that use the generic do_table */
60 struct devtable {
61 const char *device_id; /* name of table, __mod_<name>__*_device_table. */
62 unsigned long id_size;
63 int (*do_entry)(const char *filename, void *symval, char *alias);
64 };
65
66 /* Size of alias provided to do_entry functions */
67 #define ALIAS_SIZE 500
68
69 /* Define a variable f that holds the value of field f of struct devid
70 * based at address m.
71 */
72 #define DEF_FIELD(m, devid, f) \
73 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f))
74
75 /* Define a variable v that holds the address of field f of struct devid
76 * based at address m. Due to the way typeof works, for a field of type
77 * T[N] the variable has type T(*)[N], _not_ T*.
78 */
79 #define DEF_FIELD_ADDR_VAR(m, devid, f, v) \
80 typeof(((struct devid *)0)->f) *v = ((m) + OFF_##devid##_##f)
81
82 /* Define a variable f that holds the address of field f of struct devid
83 * based at address m. Due to the way typeof works, for a field of type
84 * T[N] the variable has type T(*)[N], _not_ T*.
85 */
86 #define DEF_FIELD_ADDR(m, devid, f) \
87 DEF_FIELD_ADDR_VAR(m, devid, f, f)
88
89 #define ADD(str, sep, cond, field) \
90 do { \
91 strcat(str, sep); \
92 if (cond) \
93 sprintf(str + strlen(str), \
94 sizeof(field) == 1 ? "%02X" : \
95 sizeof(field) == 2 ? "%04X" : \
96 sizeof(field) == 4 ? "%08X" : "", \
97 field); \
98 else \
99 sprintf(str + strlen(str), "*"); \
100 } while(0)
101
102 /* End in a wildcard, for future extension */
103 static inline void add_wildcard(char *str)
104 {
105 int len = strlen(str);
106
107 if (str[len - 1] != '*')
108 strcat(str + len, "*");
109 }
110
111 static inline void add_uuid(char *str, uuid_le uuid)
112 {
113 int len = strlen(str);
114
115 sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
116 uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0],
117 uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6],
118 uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11],
119 uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]);
120 }
121
122 static inline void add_guid(char *str, guid_t guid)
123 {
124 int len = strlen(str);
125
126 sprintf(str + len, "%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
127 guid.b[3], guid.b[2], guid.b[1], guid.b[0],
128 guid.b[5], guid.b[4], guid.b[7], guid.b[6],
129 guid.b[8], guid.b[9], guid.b[10], guid.b[11],
130 guid.b[12], guid.b[13], guid.b[14], guid.b[15]);
131 }
132
133 /**
134 * Check that sizeof(device_id type) are consistent with size of section
135 * in .o file. If in-consistent then userspace and kernel does not agree
136 * on actual size which is a bug.
137 * Also verify that the final entry in the table is all zeros.
138 * Ignore both checks if build host differ from target host and size differs.
139 **/
140 static void device_id_check(const char *modname, const char *device_id,
141 unsigned long size, unsigned long id_size,
142 void *symval)
143 {
144 int i;
145
146 if (size % id_size || size < id_size) {
147 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo of the size of section __mod_%s__<identifier>_device_table=%lu.\n"
148 "Fix definition of struct %s_device_id in mod_devicetable.h\n",
149 modname, device_id, id_size, device_id, size, device_id);
150 }
151 /* Verify last one is a terminator */
152 for (i = 0; i < id_size; i++ ) {
153 if (*(uint8_t*)(symval+size-id_size+i)) {
154 fprintf(stderr,
155 "%s: struct %s_device_id is %lu bytes. The last of %lu is:\n",
156 modname, device_id, id_size, size / id_size);
157 for (i = 0; i < id_size; i++ )
158 fprintf(stderr,"0x%02x ",
159 *(uint8_t*)(symval+size-id_size+i) );
160 fprintf(stderr,"\n");
161 fatal("%s: struct %s_device_id is not terminated with a NULL entry!\n",
162 modname, device_id);
163 }
164 }
165 }
166
167 /* USB is special because the bcdDevice can be matched against a numeric range */
168 /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
169 static void do_usb_entry(void *symval,
170 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
171 unsigned char range_lo, unsigned char range_hi,
172 unsigned char max, struct module *mod)
173 {
174 char alias[500];
175 DEF_FIELD(symval, usb_device_id, match_flags);
176 DEF_FIELD(symval, usb_device_id, idVendor);
177 DEF_FIELD(symval, usb_device_id, idProduct);
178 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
179 DEF_FIELD(symval, usb_device_id, bDeviceClass);
180 DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
181 DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
182 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
183 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
184 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
185 DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
186
187 strcpy(alias, "usb:");
188 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
189 idVendor);
190 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
191 idProduct);
192
193 strcat(alias, "d");
194 if (bcdDevice_initial_digits)
195 sprintf(alias + strlen(alias), "%0*X",
196 bcdDevice_initial_digits, bcdDevice_initial);
197 if (range_lo == range_hi)
198 sprintf(alias + strlen(alias), "%X", range_lo);
199 else if (range_lo > 0 || range_hi < max) {
200 if (range_lo > 0x9 || range_hi < 0xA)
201 sprintf(alias + strlen(alias),
202 "[%X-%X]",
203 range_lo,
204 range_hi);
205 else {
206 sprintf(alias + strlen(alias),
207 range_lo < 0x9 ? "[%X-9" : "[%X",
208 range_lo);
209 sprintf(alias + strlen(alias),
210 range_hi > 0xA ? "A-%X]" : "%X]",
211 range_hi);
212 }
213 }
214 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
215 strcat(alias, "*");
216
217 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
218 bDeviceClass);
219 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
220 bDeviceSubClass);
221 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
222 bDeviceProtocol);
223 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
224 bInterfaceClass);
225 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
226 bInterfaceSubClass);
227 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
228 bInterfaceProtocol);
229 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
230 bInterfaceNumber);
231
232 add_wildcard(alias);
233 buf_printf(&mod->dev_table_buf,
234 "MODULE_ALIAS(\"%s\");\n", alias);
235 }
236
237 /* Handles increment/decrement of BCD formatted integers */
238 /* Returns the previous value, so it works like i++ or i-- */
239 static unsigned int incbcd(unsigned int *bcd,
240 int inc,
241 unsigned char max,
242 size_t chars)
243 {
244 unsigned int init = *bcd, i, j;
245 unsigned long long c, dec = 0;
246
247 /* If bcd is not in BCD format, just increment */
248 if (max > 0x9) {
249 *bcd += inc;
250 return init;
251 }
252
253 /* Convert BCD to Decimal */
254 for (i=0 ; i < chars ; i++) {
255 c = (*bcd >> (i << 2)) & 0xf;
256 c = c > 9 ? 9 : c; /* force to bcd just in case */
257 for (j=0 ; j < i ; j++)
258 c = c * 10;
259 dec += c;
260 }
261
262 /* Do our increment/decrement */
263 dec += inc;
264 *bcd = 0;
265
266 /* Convert back to BCD */
267 for (i=0 ; i < chars ; i++) {
268 for (c=1,j=0 ; j < i ; j++)
269 c = c * 10;
270 c = (dec / c) % 10;
271 *bcd += c << (i << 2);
272 }
273 return init;
274 }
275
276 static void do_usb_entry_multi(void *symval, struct module *mod)
277 {
278 unsigned int devlo, devhi;
279 unsigned char chi, clo, max;
280 int ndigits;
281
282 DEF_FIELD(symval, usb_device_id, match_flags);
283 DEF_FIELD(symval, usb_device_id, idVendor);
284 DEF_FIELD(symval, usb_device_id, idProduct);
285 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
286 DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
287 DEF_FIELD(symval, usb_device_id, bDeviceClass);
288 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
289
290 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
291 bcdDevice_lo : 0x0U;
292 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
293 bcdDevice_hi : ~0x0U;
294
295 /* Figure out if this entry is in bcd or hex format */
296 max = 0x9; /* Default to decimal format */
297 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
298 clo = (devlo >> (ndigits << 2)) & 0xf;
299 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
300 if (clo > max || chi > max) {
301 max = 0xf;
302 break;
303 }
304 }
305
306 /*
307 * Some modules (visor) have empty slots as placeholder for
308 * run-time specification that results in catch-all alias
309 */
310 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
311 return;
312
313 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
314 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
315 clo = devlo & 0xf;
316 chi = devhi & 0xf;
317 if (chi > max) /* If we are in bcd mode, truncate if necessary */
318 chi = max;
319 devlo >>= 4;
320 devhi >>= 4;
321
322 if (devlo == devhi || !ndigits) {
323 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
324 break;
325 }
326
327 if (clo > 0x0)
328 do_usb_entry(symval,
329 incbcd(&devlo, 1, max,
330 sizeof(bcdDevice_lo) * 2),
331 ndigits, clo, max, max, mod);
332
333 if (chi < max)
334 do_usb_entry(symval,
335 incbcd(&devhi, -1, max,
336 sizeof(bcdDevice_lo) * 2),
337 ndigits, 0x0, chi, max, mod);
338 }
339 }
340
341 static void do_usb_table(void *symval, unsigned long size,
342 struct module *mod)
343 {
344 unsigned int i;
345 const unsigned long id_size = SIZE_usb_device_id;
346
347 device_id_check(mod->name, "usb", size, id_size, symval);
348
349 /* Leave last one: it's the terminator. */
350 size -= id_size;
351
352 for (i = 0; i < size; i += id_size)
353 do_usb_entry_multi(symval + i, mod);
354 }
355
356 static void do_of_entry_multi(void *symval, struct module *mod)
357 {
358 char alias[500];
359 int len;
360 char *tmp;
361
362 DEF_FIELD_ADDR(symval, of_device_id, name);
363 DEF_FIELD_ADDR(symval, of_device_id, type);
364 DEF_FIELD_ADDR(symval, of_device_id, compatible);
365
366 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
367 (*type)[0] ? *type : "*");
368
369 if ((*compatible)[0])
370 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
371 *compatible);
372
373 /* Replace all whitespace with underscores */
374 for (tmp = alias; tmp && *tmp; tmp++)
375 if (isspace(*tmp))
376 *tmp = '_';
377
378 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
379 strcat(alias, "C");
380 add_wildcard(alias);
381 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
382 }
383
384 static void do_of_table(void *symval, unsigned long size,
385 struct module *mod)
386 {
387 unsigned int i;
388 const unsigned long id_size = SIZE_of_device_id;
389
390 device_id_check(mod->name, "of", size, id_size, symval);
391
392 /* Leave last one: it's the terminator. */
393 size -= id_size;
394
395 for (i = 0; i < size; i += id_size)
396 do_of_entry_multi(symval + i, mod);
397 }
398
399 /* Looks like: hid:bNvNpN */
400 static int do_hid_entry(const char *filename,
401 void *symval, char *alias)
402 {
403 DEF_FIELD(symval, hid_device_id, bus);
404 DEF_FIELD(symval, hid_device_id, group);
405 DEF_FIELD(symval, hid_device_id, vendor);
406 DEF_FIELD(symval, hid_device_id, product);
407
408 sprintf(alias, "hid:");
409 ADD(alias, "b", bus != HID_BUS_ANY, bus);
410 ADD(alias, "g", group != HID_GROUP_ANY, group);
411 ADD(alias, "v", vendor != HID_ANY_ID, vendor);
412 ADD(alias, "p", product != HID_ANY_ID, product);
413
414 return 1;
415 }
416
417 /* Looks like: ieee1394:venNmoNspNverN */
418 static int do_ieee1394_entry(const char *filename,
419 void *symval, char *alias)
420 {
421 DEF_FIELD(symval, ieee1394_device_id, match_flags);
422 DEF_FIELD(symval, ieee1394_device_id, vendor_id);
423 DEF_FIELD(symval, ieee1394_device_id, model_id);
424 DEF_FIELD(symval, ieee1394_device_id, specifier_id);
425 DEF_FIELD(symval, ieee1394_device_id, version);
426
427 strcpy(alias, "ieee1394:");
428 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
429 vendor_id);
430 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
431 model_id);
432 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
433 specifier_id);
434 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
435 version);
436
437 add_wildcard(alias);
438 return 1;
439 }
440
441 /* Looks like: pci:vNdNsvNsdNbcNscNiN or <prefix>_pci:vNdNsvNsdNbcNscNiN. */
442 static int do_pci_entry(const char *filename,
443 void *symval, char *alias)
444 {
445 /* Class field can be divided into these three. */
446 unsigned char baseclass, subclass, interface,
447 baseclass_mask, subclass_mask, interface_mask;
448
449 DEF_FIELD(symval, pci_device_id, vendor);
450 DEF_FIELD(symval, pci_device_id, device);
451 DEF_FIELD(symval, pci_device_id, subvendor);
452 DEF_FIELD(symval, pci_device_id, subdevice);
453 DEF_FIELD(symval, pci_device_id, class);
454 DEF_FIELD(symval, pci_device_id, class_mask);
455 DEF_FIELD(symval, pci_device_id, override_only);
456
457 switch (override_only) {
458 case 0:
459 strcpy(alias, "pci:");
460 break;
461 case PCI_ID_F_VFIO_DRIVER_OVERRIDE:
462 strcpy(alias, "vfio_pci:");
463 break;
464 default:
465 warn("Unknown PCI driver_override alias %08X\n",
466 override_only);
467 return 0;
468 }
469
470 ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
471 ADD(alias, "d", device != PCI_ANY_ID, device);
472 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
473 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
474
475 baseclass = (class) >> 16;
476 baseclass_mask = (class_mask) >> 16;
477 subclass = (class) >> 8;
478 subclass_mask = (class_mask) >> 8;
479 interface = class;
480 interface_mask = class_mask;
481
482 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
483 || (subclass_mask != 0 && subclass_mask != 0xFF)
484 || (interface_mask != 0 && interface_mask != 0xFF)) {
485 warn("Can't handle masks in %s:%04X\n",
486 filename, class_mask);
487 return 0;
488 }
489
490 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
491 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
492 ADD(alias, "i", interface_mask == 0xFF, interface);
493 add_wildcard(alias);
494 return 1;
495 }
496
497 /* looks like: "ccw:tNmNdtNdmN" */
498 static int do_ccw_entry(const char *filename,
499 void *symval, char *alias)
500 {
501 DEF_FIELD(symval, ccw_device_id, match_flags);
502 DEF_FIELD(symval, ccw_device_id, cu_type);
503 DEF_FIELD(symval, ccw_device_id, cu_model);
504 DEF_FIELD(symval, ccw_device_id, dev_type);
505 DEF_FIELD(symval, ccw_device_id, dev_model);
506
507 strcpy(alias, "ccw:");
508 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
509 cu_type);
510 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
511 cu_model);
512 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
513 dev_type);
514 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
515 dev_model);
516 add_wildcard(alias);
517 return 1;
518 }
519
520 /* looks like: "ap:tN" */
521 static int do_ap_entry(const char *filename,
522 void *symval, char *alias)
523 {
524 DEF_FIELD(symval, ap_device_id, dev_type);
525
526 sprintf(alias, "ap:t%02X*", dev_type);
527 return 1;
528 }
529
530 /* looks like: "css:tN" */
531 static int do_css_entry(const char *filename,
532 void *symval, char *alias)
533 {
534 DEF_FIELD(symval, css_device_id, type);
535
536 sprintf(alias, "css:t%01X", type);
537 return 1;
538 }
539
540 /* Looks like: "serio:tyNprNidNexN" */
541 static int do_serio_entry(const char *filename,
542 void *symval, char *alias)
543 {
544 DEF_FIELD(symval, serio_device_id, type);
545 DEF_FIELD(symval, serio_device_id, proto);
546 DEF_FIELD(symval, serio_device_id, id);
547 DEF_FIELD(symval, serio_device_id, extra);
548
549 strcpy(alias, "serio:");
550 ADD(alias, "ty", type != SERIO_ANY, type);
551 ADD(alias, "pr", proto != SERIO_ANY, proto);
552 ADD(alias, "id", id != SERIO_ANY, id);
553 ADD(alias, "ex", extra != SERIO_ANY, extra);
554
555 add_wildcard(alias);
556 return 1;
557 }
558
559 /* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or
560 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if)
561 *
562 * NOTE: Each driver should use one of the following : _HID, _CIDs
563 * or _CLS. Also, bb, ss, and pp can be substituted with ??
564 * as don't care byte.
565 */
566 static int do_acpi_entry(const char *filename,
567 void *symval, char *alias)
568 {
569 DEF_FIELD_ADDR(symval, acpi_device_id, id);
570 DEF_FIELD_ADDR(symval, acpi_device_id, cls);
571 DEF_FIELD_ADDR(symval, acpi_device_id, cls_msk);
572
573 if (id && strlen((const char *)*id))
574 sprintf(alias, "acpi*:%s:*", *id);
575 else if (cls) {
576 int i, byte_shift, cnt = 0;
577 unsigned int msk;
578
579 sprintf(&alias[cnt], "acpi*:");
580 cnt = 6;
581 for (i = 1; i <= 3; i++) {
582 byte_shift = 8 * (3-i);
583 msk = (*cls_msk >> byte_shift) & 0xFF;
584 if (msk)
585 sprintf(&alias[cnt], "%02x",
586 (*cls >> byte_shift) & 0xFF);
587 else
588 sprintf(&alias[cnt], "??");
589 cnt += 2;
590 }
591 sprintf(&alias[cnt], ":*");
592 }
593 return 1;
594 }
595
596 /* looks like: "pnp:dD" */
597 static void do_pnp_device_entry(void *symval, unsigned long size,
598 struct module *mod)
599 {
600 const unsigned long id_size = SIZE_pnp_device_id;
601 const unsigned int count = (size / id_size)-1;
602 unsigned int i;
603
604 device_id_check(mod->name, "pnp", size, id_size, symval);
605
606 for (i = 0; i < count; i++) {
607 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id);
608 char acpi_id[sizeof(*id)];
609 int j;
610
611 buf_printf(&mod->dev_table_buf,
612 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
613
614 /* fix broken pnp bus lowercasing */
615 for (j = 0; j < sizeof(acpi_id); j++)
616 acpi_id[j] = toupper((*id)[j]);
617 buf_printf(&mod->dev_table_buf,
618 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
619 }
620 }
621
622 /* looks like: "pnp:dD" for every device of the card */
623 static void do_pnp_card_entries(void *symval, unsigned long size,
624 struct module *mod)
625 {
626 const unsigned long id_size = SIZE_pnp_card_device_id;
627 const unsigned int count = (size / id_size)-1;
628 unsigned int i;
629
630 device_id_check(mod->name, "pnp", size, id_size, symval);
631
632 for (i = 0; i < count; i++) {
633 unsigned int j;
634 DEF_FIELD_ADDR(symval + i * id_size, pnp_card_device_id, devs);
635
636 for (j = 0; j < PNP_MAX_DEVICES; j++) {
637 const char *id = (char *)(*devs)[j].id;
638 int i2, j2;
639 int dup = 0;
640
641 if (!id[0])
642 break;
643
644 /* find duplicate, already added value */
645 for (i2 = 0; i2 < i && !dup; i2++) {
646 DEF_FIELD_ADDR_VAR(symval + i2 * id_size,
647 pnp_card_device_id,
648 devs, devs_dup);
649
650 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
651 const char *id2 =
652 (char *)(*devs_dup)[j2].id;
653
654 if (!id2[0])
655 break;
656
657 if (!strcmp(id, id2)) {
658 dup = 1;
659 break;
660 }
661 }
662 }
663
664 /* add an individual alias for every device entry */
665 if (!dup) {
666 char acpi_id[PNP_ID_LEN];
667 int k;
668
669 buf_printf(&mod->dev_table_buf,
670 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
671
672 /* fix broken pnp bus lowercasing */
673 for (k = 0; k < sizeof(acpi_id); k++)
674 acpi_id[k] = toupper(id[k]);
675 buf_printf(&mod->dev_table_buf,
676 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
677 }
678 }
679 }
680 }
681
682 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
683 static int do_pcmcia_entry(const char *filename,
684 void *symval, char *alias)
685 {
686 unsigned int i;
687 DEF_FIELD(symval, pcmcia_device_id, match_flags);
688 DEF_FIELD(symval, pcmcia_device_id, manf_id);
689 DEF_FIELD(symval, pcmcia_device_id, card_id);
690 DEF_FIELD(symval, pcmcia_device_id, func_id);
691 DEF_FIELD(symval, pcmcia_device_id, function);
692 DEF_FIELD(symval, pcmcia_device_id, device_no);
693 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
694
695 for (i=0; i<4; i++) {
696 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]);
697 }
698
699 strcpy(alias, "pcmcia:");
700 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
701 manf_id);
702 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
703 card_id);
704 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
705 func_id);
706 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
707 function);
708 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
709 device_no);
710 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]);
711 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]);
712 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]);
713 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]);
714
715 add_wildcard(alias);
716 return 1;
717 }
718
719 static int do_vio_entry(const char *filename, void *symval,
720 char *alias)
721 {
722 char *tmp;
723 DEF_FIELD_ADDR(symval, vio_device_id, type);
724 DEF_FIELD_ADDR(symval, vio_device_id, compat);
725
726 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
727 (*compat)[0] ? *compat : "*");
728
729 /* Replace all whitespace with underscores */
730 for (tmp = alias; tmp && *tmp; tmp++)
731 if (isspace (*tmp))
732 *tmp = '_';
733
734 add_wildcard(alias);
735 return 1;
736 }
737
738 static void do_input(char *alias,
739 kernel_ulong_t *arr, unsigned int min, unsigned int max)
740 {
741 unsigned int i;
742
743 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++)
744 arr[i] = TO_NATIVE(arr[i]);
745 for (i = min; i < max; i++)
746 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
747 sprintf(alias + strlen(alias), "%X,*", i);
748 }
749
750 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
751 static int do_input_entry(const char *filename, void *symval,
752 char *alias)
753 {
754 DEF_FIELD(symval, input_device_id, flags);
755 DEF_FIELD(symval, input_device_id, bustype);
756 DEF_FIELD(symval, input_device_id, vendor);
757 DEF_FIELD(symval, input_device_id, product);
758 DEF_FIELD(symval, input_device_id, version);
759 DEF_FIELD_ADDR(symval, input_device_id, evbit);
760 DEF_FIELD_ADDR(symval, input_device_id, keybit);
761 DEF_FIELD_ADDR(symval, input_device_id, relbit);
762 DEF_FIELD_ADDR(symval, input_device_id, absbit);
763 DEF_FIELD_ADDR(symval, input_device_id, mscbit);
764 DEF_FIELD_ADDR(symval, input_device_id, ledbit);
765 DEF_FIELD_ADDR(symval, input_device_id, sndbit);
766 DEF_FIELD_ADDR(symval, input_device_id, ffbit);
767 DEF_FIELD_ADDR(symval, input_device_id, swbit);
768
769 sprintf(alias, "input:");
770
771 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
772 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
773 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
774 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
775
776 sprintf(alias + strlen(alias), "-e*");
777 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
778 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
779 sprintf(alias + strlen(alias), "k*");
780 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
781 do_input(alias, *keybit,
782 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
783 INPUT_DEVICE_ID_KEY_MAX);
784 sprintf(alias + strlen(alias), "r*");
785 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
786 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
787 sprintf(alias + strlen(alias), "a*");
788 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
789 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
790 sprintf(alias + strlen(alias), "m*");
791 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
792 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
793 sprintf(alias + strlen(alias), "l*");
794 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
795 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
796 sprintf(alias + strlen(alias), "s*");
797 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
798 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
799 sprintf(alias + strlen(alias), "f*");
800 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
801 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
802 sprintf(alias + strlen(alias), "w*");
803 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
804 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
805 return 1;
806 }
807
808 static int do_eisa_entry(const char *filename, void *symval,
809 char *alias)
810 {
811 DEF_FIELD_ADDR(symval, eisa_device_id, sig);
812 if (sig[0])
813 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig);
814 else
815 strcat(alias, "*");
816 return 1;
817 }
818
819 /* Looks like: parisc:tNhvNrevNsvN */
820 static int do_parisc_entry(const char *filename, void *symval,
821 char *alias)
822 {
823 DEF_FIELD(symval, parisc_device_id, hw_type);
824 DEF_FIELD(symval, parisc_device_id, hversion);
825 DEF_FIELD(symval, parisc_device_id, hversion_rev);
826 DEF_FIELD(symval, parisc_device_id, sversion);
827
828 strcpy(alias, "parisc:");
829 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
830 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
831 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
832 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
833
834 add_wildcard(alias);
835 return 1;
836 }
837
838 /* Looks like: sdio:cNvNdN. */
839 static int do_sdio_entry(const char *filename,
840 void *symval, char *alias)
841 {
842 DEF_FIELD(symval, sdio_device_id, class);
843 DEF_FIELD(symval, sdio_device_id, vendor);
844 DEF_FIELD(symval, sdio_device_id, device);
845
846 strcpy(alias, "sdio:");
847 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
848 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
849 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
850 add_wildcard(alias);
851 return 1;
852 }
853
854 /* Looks like: ssb:vNidNrevN. */
855 static int do_ssb_entry(const char *filename,
856 void *symval, char *alias)
857 {
858 DEF_FIELD(symval, ssb_device_id, vendor);
859 DEF_FIELD(symval, ssb_device_id, coreid);
860 DEF_FIELD(symval, ssb_device_id, revision);
861
862 strcpy(alias, "ssb:");
863 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
864 ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
865 ADD(alias, "rev", revision != SSB_ANY_REV, revision);
866 add_wildcard(alias);
867 return 1;
868 }
869
870 /* Looks like: bcma:mNidNrevNclN. */
871 static int do_bcma_entry(const char *filename,
872 void *symval, char *alias)
873 {
874 DEF_FIELD(symval, bcma_device_id, manuf);
875 DEF_FIELD(symval, bcma_device_id, id);
876 DEF_FIELD(symval, bcma_device_id, rev);
877 DEF_FIELD(symval, bcma_device_id, class);
878
879 strcpy(alias, "bcma:");
880 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
881 ADD(alias, "id", id != BCMA_ANY_ID, id);
882 ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
883 ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
884 add_wildcard(alias);
885 return 1;
886 }
887
888 /* Looks like: virtio:dNvN */
889 static int do_virtio_entry(const char *filename, void *symval,
890 char *alias)
891 {
892 DEF_FIELD(symval, virtio_device_id, device);
893 DEF_FIELD(symval, virtio_device_id, vendor);
894
895 strcpy(alias, "virtio:");
896 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
897 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
898
899 add_wildcard(alias);
900 return 1;
901 }
902
903 /*
904 * Looks like: vmbus:guid
905 * Each byte of the guid will be represented by two hex characters
906 * in the name.
907 */
908
909 static int do_vmbus_entry(const char *filename, void *symval,
910 char *alias)
911 {
912 int i;
913 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
914 char guid_name[(sizeof(*guid) + 1) * 2];
915
916 for (i = 0; i < (sizeof(*guid) * 2); i += 2)
917 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2]));
918
919 strcpy(alias, "vmbus:");
920 strcat(alias, guid_name);
921
922 return 1;
923 }
924
925 /* Looks like: rpmsg:S */
926 static int do_rpmsg_entry(const char *filename, void *symval,
927 char *alias)
928 {
929 DEF_FIELD_ADDR(symval, rpmsg_device_id, name);
930 sprintf(alias, RPMSG_DEVICE_MODALIAS_FMT, *name);
931
932 return 1;
933 }
934
935 /* Looks like: i2c:S */
936 static int do_i2c_entry(const char *filename, void *symval,
937 char *alias)
938 {
939 DEF_FIELD_ADDR(symval, i2c_device_id, name);
940 sprintf(alias, I2C_MODULE_PREFIX "%s", *name);
941
942 return 1;
943 }
944
945 static int do_i3c_entry(const char *filename, void *symval,
946 char *alias)
947 {
948 DEF_FIELD(symval, i3c_device_id, match_flags);
949 DEF_FIELD(symval, i3c_device_id, dcr);
950 DEF_FIELD(symval, i3c_device_id, manuf_id);
951 DEF_FIELD(symval, i3c_device_id, part_id);
952 DEF_FIELD(symval, i3c_device_id, extra_info);
953
954 strcpy(alias, "i3c:");
955 ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr);
956 ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id);
957 ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id);
958 ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info);
959
960 return 1;
961 }
962
963 /* Looks like: spi:S */
964 static int do_spi_entry(const char *filename, void *symval,
965 char *alias)
966 {
967 DEF_FIELD_ADDR(symval, spi_device_id, name);
968 sprintf(alias, SPI_MODULE_PREFIX "%s", *name);
969
970 return 1;
971 }
972
973 static const struct dmifield {
974 const char *prefix;
975 int field;
976 } dmi_fields[] = {
977 { "bvn", DMI_BIOS_VENDOR },
978 { "bvr", DMI_BIOS_VERSION },
979 { "bd", DMI_BIOS_DATE },
980 { "br", DMI_BIOS_RELEASE },
981 { "efr", DMI_EC_FIRMWARE_RELEASE },
982 { "svn", DMI_SYS_VENDOR },
983 { "pn", DMI_PRODUCT_NAME },
984 { "pvr", DMI_PRODUCT_VERSION },
985 { "rvn", DMI_BOARD_VENDOR },
986 { "rn", DMI_BOARD_NAME },
987 { "rvr", DMI_BOARD_VERSION },
988 { "cvn", DMI_CHASSIS_VENDOR },
989 { "ct", DMI_CHASSIS_TYPE },
990 { "cvr", DMI_CHASSIS_VERSION },
991 { NULL, DMI_NONE }
992 };
993
994 static void dmi_ascii_filter(char *d, const char *s)
995 {
996 /* Filter out characters we don't want to see in the modalias string */
997 for (; *s; s++)
998 if (*s > ' ' && *s < 127 && *s != ':')
999 *(d++) = *s;
1000
1001 *d = 0;
1002 }
1003
1004
1005 static int do_dmi_entry(const char *filename, void *symval,
1006 char *alias)
1007 {
1008 int i, j;
1009 DEF_FIELD_ADDR(symval, dmi_system_id, matches);
1010 sprintf(alias, "dmi*");
1011
1012 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
1013 for (j = 0; j < 4; j++) {
1014 if ((*matches)[j].slot &&
1015 (*matches)[j].slot == dmi_fields[i].field) {
1016 sprintf(alias + strlen(alias), ":%s*",
1017 dmi_fields[i].prefix);
1018 dmi_ascii_filter(alias + strlen(alias),
1019 (*matches)[j].substr);
1020 strcat(alias, "*");
1021 }
1022 }
1023 }
1024
1025 strcat(alias, ":");
1026 return 1;
1027 }
1028
1029 static int do_platform_entry(const char *filename,
1030 void *symval, char *alias)
1031 {
1032 DEF_FIELD_ADDR(symval, platform_device_id, name);
1033 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name);
1034 return 1;
1035 }
1036
1037 static int do_mdio_entry(const char *filename,
1038 void *symval, char *alias)
1039 {
1040 int i;
1041 DEF_FIELD(symval, mdio_device_id, phy_id);
1042 DEF_FIELD(symval, mdio_device_id, phy_id_mask);
1043
1044 alias += sprintf(alias, MDIO_MODULE_PREFIX);
1045
1046 for (i = 0; i < 32; i++) {
1047 if (!((phy_id_mask >> (31-i)) & 1))
1048 *(alias++) = '?';
1049 else if ((phy_id >> (31-i)) & 1)
1050 *(alias++) = '1';
1051 else
1052 *(alias++) = '';
1053 }
1054
1055 /* Terminate the string */
1056 *alias = 0;
1057
1058 return 1;
1059 }
1060
1061 /* Looks like: zorro:iN. */
1062 static int do_zorro_entry(const char *filename, void *symval,
1063 char *alias)
1064 {
1065 DEF_FIELD(symval, zorro_device_id, id);
1066 strcpy(alias, "zorro:");
1067 ADD(alias, "i", id != ZORRO_WILDCARD, id);
1068 return 1;
1069 }
1070
1071 /* looks like: "pnp:dD" */
1072 static int do_isapnp_entry(const char *filename,
1073 void *symval, char *alias)
1074 {
1075 DEF_FIELD(symval, isapnp_device_id, vendor);
1076 DEF_FIELD(symval, isapnp_device_id, function);
1077 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
1078 'A' + ((vendor >> 2) & 0x3f) - 1,
1079 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
1080 'A' + ((vendor >> 8) & 0x1f) - 1,
1081 (function >> 4) & 0x0f, function & 0x0f,
1082 (function >> 12) & 0x0f, (function >> 8) & 0x0f);
1083 return 1;
1084 }
1085
1086 /* Looks like: "ipack:fNvNdN". */
1087 static int do_ipack_entry(const char *filename,
1088 void *symval, char *alias)
1089 {
1090 DEF_FIELD(symval, ipack_device_id, format);
1091 DEF_FIELD(symval, ipack_device_id, vendor);
1092 DEF_FIELD(symval, ipack_device_id, device);
1093 strcpy(alias, "ipack:");
1094 ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
1095 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
1096 ADD(alias, "d", device != IPACK_ANY_ID, device);
1097 add_wildcard(alias);
1098 return 1;
1099 }
1100
1101 /*
1102 * Append a match expression for a single masked hex digit.
1103 * outp points to a pointer to the character at which to append.
1104 * *outp is updated on return to point just after the appended text,
1105 * to facilitate further appending.
1106 */
1107 static void append_nibble_mask(char **outp,
1108 unsigned int nibble, unsigned int mask)
1109 {
1110 char *p = *outp;
1111 unsigned int i;
1112
1113 switch (mask) {
1114 case 0:
1115 *p++ = '?';
1116 break;
1117
1118 case 0xf:
1119 p += sprintf(p, "%X", nibble);
1120 break;
1121
1122 default:
1123 /*
1124 * Dumbly emit a match pattern for all possible matching
1125 * digits. This could be improved in some cases using ranges,
1126 * but it has the advantage of being trivially correct, and is
1127 * often optimal.
1128 */
1129 *p++ = '[';
1130 for (i = 0; i < 0x10; i++)
1131 if ((i & mask) == nibble)
1132 p += sprintf(p, "%X", i);
1133 *p++ = ']';
1134 }
1135
1136 /* Ensure that the string remains NUL-terminated: */
1137 *p = '\0';
1138
1139 /* Advance the caller's end-of-string pointer: */
1140 *outp = p;
1141 }
1142
1143 /*
1144 * looks like: "amba:dN"
1145 *
1146 * N is exactly 8 digits, where each is an upper-case hex digit, or
1147 * a ? or [] pattern matching exactly one digit.
1148 */
1149 static int do_amba_entry(const char *filename,
1150 void *symval, char *alias)
1151 {
1152 unsigned int digit;
1153 char *p = alias;
1154 DEF_FIELD(symval, amba_id, id);
1155 DEF_FIELD(symval, amba_id, mask);
1156
1157 if ((id & mask) != id)
1158 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1159 filename, id, mask);
1160
1161 p += sprintf(alias, "amba:d");
1162 for (digit = 0; digit < 8; digit++)
1163 append_nibble_mask(&p,
1164 (id >> (4 * (7 - digit))) & 0xf,
1165 (mask >> (4 * (7 - digit))) & 0xf);
1166
1167 return 1;
1168 }
1169
1170 /*
1171 * looks like: "mipscdmm:tN"
1172 *
1173 * N is exactly 2 digits, where each is an upper-case hex digit, or
1174 * a ? or [] pattern matching exactly one digit.
1175 */
1176 static int do_mips_cdmm_entry(const char *filename,
1177 void *symval, char *alias)
1178 {
1179 DEF_FIELD(symval, mips_cdmm_device_id, type);
1180
1181 sprintf(alias, "mipscdmm:t%02X*", type);
1182 return 1;
1183 }
1184
1185 /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
1186 * All fields are numbers. It would be nicer to use strings for vendor
1187 * and feature, but getting those out of the build system here is too
1188 * complicated.
1189 */
1190
1191 static int do_x86cpu_entry(const char *filename, void *symval,
1192 char *alias)
1193 {
1194 DEF_FIELD(symval, x86_cpu_id, feature);
1195 DEF_FIELD(symval, x86_cpu_id, family);
1196 DEF_FIELD(symval, x86_cpu_id, model);
1197 DEF_FIELD(symval, x86_cpu_id, vendor);
1198
1199 strcpy(alias, "cpu:type:x86,");
1200 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
1201 ADD(alias, "fam", family != X86_FAMILY_ANY, family);
1202 ADD(alias, "mod", model != X86_MODEL_ANY, model);
1203 strcat(alias, ":feature:*");
1204 if (feature != X86_FEATURE_ANY)
1205 sprintf(alias + strlen(alias), "%04X*", feature);
1206 return 1;
1207 }
1208
1209 /* LOOKS like cpu:type:*:feature:*FEAT* */
1210 static int do_cpu_entry(const char *filename, void *symval, char *alias)
1211 {
1212 DEF_FIELD(symval, cpu_feature, feature);
1213
1214 sprintf(alias, "cpu:type:*:feature:*%04X*", feature);
1215 return 1;
1216 }
1217
1218 /* Looks like: mei:S:uuid:N:* */
1219 static int do_mei_entry(const char *filename, void *symval,
1220 char *alias)
1221 {
1222 DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
1223 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid);
1224 DEF_FIELD(symval, mei_cl_device_id, version);
1225
1226 sprintf(alias, MEI_CL_MODULE_PREFIX);
1227 sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*");
1228 add_uuid(alias, *uuid);
1229 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version);
1230
1231 strcat(alias, ":*");
1232
1233 return 1;
1234 }
1235
1236 /* Looks like: rapidio:vNdNavNadN */
1237 static int do_rio_entry(const char *filename,
1238 void *symval, char *alias)
1239 {
1240 DEF_FIELD(symval, rio_device_id, did);
1241 DEF_FIELD(symval, rio_device_id, vid);
1242 DEF_FIELD(symval, rio_device_id, asm_did);
1243 DEF_FIELD(symval, rio_device_id, asm_vid);
1244
1245 strcpy(alias, "rapidio:");
1246 ADD(alias, "v", vid != RIO_ANY_ID, vid);
1247 ADD(alias, "d", did != RIO_ANY_ID, did);
1248 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
1249 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
1250
1251 add_wildcard(alias);
1252 return 1;
1253 }
1254
1255 /* Looks like: ulpi:vNpN */
1256 static int do_ulpi_entry(const char *filename, void *symval,
1257 char *alias)
1258 {
1259 DEF_FIELD(symval, ulpi_device_id, vendor);
1260 DEF_FIELD(symval, ulpi_device_id, product);
1261
1262 sprintf(alias, "ulpi:v%04xp%04x", vendor, product);
1263
1264 return 1;
1265 }
1266
1267 /* Looks like: hdaudio:vNrNaN */
1268 static int do_hda_entry(const char *filename, void *symval, char *alias)
1269 {
1270 DEF_FIELD(symval, hda_device_id, vendor_id);
1271 DEF_FIELD(symval, hda_device_id, rev_id);
1272 DEF_FIELD(symval, hda_device_id, api_version);
1273
1274 strcpy(alias, "hdaudio:");
1275 ADD(alias, "v", vendor_id != 0, vendor_id);
1276 ADD(alias, "r", rev_id != 0, rev_id);
1277 ADD(alias, "a", api_version != 0, api_version);
1278
1279 add_wildcard(alias);
1280 return 1;
1281 }
1282
1283 /* Looks like: sdw:mNpNvNcN */
1284 static int do_sdw_entry(const char *filename, void *symval, char *alias)
1285 {
1286 DEF_FIELD(symval, sdw_device_id, mfg_id);
1287 DEF_FIELD(symval, sdw_device_id, part_id);
1288 DEF_FIELD(symval, sdw_device_id, sdw_version);
1289 DEF_FIELD(symval, sdw_device_id, class_id);
1290
1291 strcpy(alias, "sdw:");
1292 ADD(alias, "m", mfg_id != 0, mfg_id);
1293 ADD(alias, "p", part_id != 0, part_id);
1294 ADD(alias, "v", sdw_version != 0, sdw_version);
1295 ADD(alias, "c", class_id != 0, class_id);
1296
1297 add_wildcard(alias);
1298 return 1;
1299 }
1300
1301 /* Looks like: fsl-mc:vNdN */
1302 static int do_fsl_mc_entry(const char *filename, void *symval,
1303 char *alias)
1304 {
1305 DEF_FIELD(symval, fsl_mc_device_id, vendor);
1306 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type);
1307
1308 sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type);
1309 return 1;
1310 }
1311
1312 /* Looks like: tbsvc:kSpNvNrN */
1313 static int do_tbsvc_entry(const char *filename, void *symval, char *alias)
1314 {
1315 DEF_FIELD(symval, tb_service_id, match_flags);
1316 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key);
1317 DEF_FIELD(symval, tb_service_id, protocol_id);
1318 DEF_FIELD(symval, tb_service_id, protocol_version);
1319 DEF_FIELD(symval, tb_service_id, protocol_revision);
1320
1321 strcpy(alias, "tbsvc:");
1322 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY)
1323 sprintf(alias + strlen(alias), "k%s", *protocol_key);
1324 else
1325 strcat(alias + strlen(alias), "k*");
1326 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id);
1327 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION,
1328 protocol_version);
1329 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION,
1330 protocol_revision);
1331
1332 add_wildcard(alias);
1333 return 1;
1334 }
1335
1336 /* Looks like: typec:idNmN */
1337 static int do_typec_entry(const char *filename, void *symval, char *alias)
1338 {
1339 DEF_FIELD(symval, typec_device_id, svid);
1340 DEF_FIELD(symval, typec_device_id, mode);
1341
1342 sprintf(alias, "typec:id%04X", svid);
1343 ADD(alias, "m", mode != TYPEC_ANY_MODE, mode);
1344
1345 return 1;
1346 }
1347
1348 /* Looks like: tee:uuid */
1349 static int do_tee_entry(const char *filename, void *symval, char *alias)
1350 {
1351 DEF_FIELD_ADDR(symval, tee_client_device_id, uuid);
1352
1353 sprintf(alias, "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
1354 uuid->b[0], uuid->b[1], uuid->b[2], uuid->b[3], uuid->b[4],
1355 uuid->b[5], uuid->b[6], uuid->b[7], uuid->b[8], uuid->b[9],
1356 uuid->b[10], uuid->b[11], uuid->b[12], uuid->b[13], uuid->b[14],
1357 uuid->b[15]);
1358
1359 add_wildcard(alias);
1360 return 1;
1361 }
1362
1363 /* Looks like: wmi:guid */
1364 static int do_wmi_entry(const char *filename, void *symval, char *alias)
1365 {
1366 int len;
1367 DEF_FIELD_ADDR(symval, wmi_device_id, guid_string);
1368
1369 if (strlen(*guid_string) != UUID_STRING_LEN) {
1370 warn("Invalid WMI device id 'wmi:%s' in '%s'\n",
1371 *guid_string, filename);
1372 return 0;
1373 }
1374
1375 len = snprintf(alias, ALIAS_SIZE, WMI_MODULE_PREFIX "%s", *guid_string);
1376 if (len < 0 || len >= ALIAS_SIZE) {
1377 warn("Could not generate all MODULE_ALIAS's in '%s'\n",
1378 filename);
1379 return 0;
1380 }
1381 return 1;
1382 }
1383
1384 /* Looks like: mhi:S */
1385 static int do_mhi_entry(const char *filename, void *symval, char *alias)
1386 {
1387 DEF_FIELD_ADDR(symval, mhi_device_id, chan);
1388 sprintf(alias, MHI_DEVICE_MODALIAS_FMT, *chan);
1389 return 1;
1390 }
1391
1392 /* Looks like: mhi_ep:S */
1393 static int do_mhi_ep_entry(const char *filename, void *symval, char *alias)
1394 {
1395 DEF_FIELD_ADDR(symval, mhi_device_id, chan);
1396 sprintf(alias, MHI_EP_DEVICE_MODALIAS_FMT, *chan);
1397
1398 return 1;
1399 }
1400
1401 /* Looks like: ishtp:{guid} */
1402 static int do_ishtp_entry(const char *filename, void *symval, char *alias)
1403 {
1404 DEF_FIELD_ADDR(symval, ishtp_device_id, guid);
1405
1406 strcpy(alias, ISHTP_MODULE_PREFIX "{");
1407 add_guid(alias, *guid);
1408 strcat(alias, "}");
1409
1410 return 1;
1411 }
1412
1413 static int do_auxiliary_entry(const char *filename, void *symval, char *alias)
1414 {
1415 DEF_FIELD_ADDR(symval, auxiliary_device_id, name);
1416 sprintf(alias, AUXILIARY_MODULE_PREFIX "%s", *name);
1417
1418 return 1;
1419 }
1420
1421 /*
1422 * Looks like: ssam:dNcNtNiNfN
1423 *
1424 * N is exactly 2 digits, where each is an upper-case hex digit.
1425 */
1426 static int do_ssam_entry(const char *filename, void *symval, char *alias)
1427 {
1428 DEF_FIELD(symval, ssam_device_id, match_flags);
1429 DEF_FIELD(symval, ssam_device_id, domain);
1430 DEF_FIELD(symval, ssam_device_id, category);
1431 DEF_FIELD(symval, ssam_device_id, target);
1432 DEF_FIELD(symval, ssam_device_id, instance);
1433 DEF_FIELD(symval, ssam_device_id, function);
1434
1435 sprintf(alias, "ssam:d%02Xc%02X", domain, category);
1436 ADD(alias, "t", match_flags & SSAM_MATCH_TARGET, target);
1437 ADD(alias, "i", match_flags & SSAM_MATCH_INSTANCE, instance);
1438 ADD(alias, "f", match_flags & SSAM_MATCH_FUNCTION, function);
1439
1440 return 1;
1441 }
1442
1443 /* Looks like: dfl:tNfN */
1444 static int do_dfl_entry(const char *filename, void *symval, char *alias)
1445 {
1446 DEF_FIELD(symval, dfl_device_id, type);
1447 DEF_FIELD(symval, dfl_device_id, feature_id);
1448
1449 sprintf(alias, "dfl:t%04Xf%04X", type, feature_id);
1450
1451 add_wildcard(alias);
1452 return 1;
1453 }
1454
1455 /* Looks like: cdx:vNdN */
1456 static int do_cdx_entry(const char *filename, void *symval,
1457 char *alias)
1458 {
1459 DEF_FIELD(symval, cdx_device_id, vendor);
1460 DEF_FIELD(symval, cdx_device_id, device);
1461 DEF_FIELD(symval, cdx_device_id, subvendor);
1462 DEF_FIELD(symval, cdx_device_id, subdevice);
1463 DEF_FIELD(symval, cdx_device_id, class);
1464 DEF_FIELD(symval, cdx_device_id, class_mask);
1465 DEF_FIELD(symval, cdx_device_id, override_only);
1466
1467 switch (override_only) {
1468 case 0:
1469 strcpy(alias, "cdx:");
1470 break;
1471 case CDX_ID_F_VFIO_DRIVER_OVERRIDE:
1472 strcpy(alias, "vfio_cdx:");
1473 break;
1474 default:
1475 warn("Unknown CDX driver_override alias %08X\n",
1476 override_only);
1477 return 0;
1478 }
1479
1480 ADD(alias, "v", vendor != CDX_ANY_ID, vendor);
1481 ADD(alias, "d", device != CDX_ANY_ID, device);
1482 ADD(alias, "sv", subvendor != CDX_ANY_ID, subvendor);
1483 ADD(alias, "sd", subdevice != CDX_ANY_ID, subdevice);
1484 ADD(alias, "c", class_mask == 0xFFFFFF, class);
1485
1486 return 1;
1487 }
1488
1489 static int do_vchiq_entry(const char *filename, void *symval, char *alias)
1490 {
1491 DEF_FIELD_ADDR(symval, vchiq_device_id, name);
1492 sprintf(alias, "vchiq:%s", *name);
1493
1494 return 1;
1495 }
1496
1497 /* Looks like: coreboot:tN */
1498 static int do_coreboot_entry(const char *filename, void *symval, char *alias)
1499 {
1500 DEF_FIELD(symval, coreboot_device_id, tag);
1501 sprintf(alias, "coreboot:t%08X", tag);
1502
1503 return 1;
1504 }
1505
1506 /* Does namelen bytes of name exactly match the symbol? */
1507 static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1508 {
1509 if (namelen != strlen(symbol))
1510 return false;
1511
1512 return memcmp(name, symbol, namelen) == 0;
1513 }
1514
1515 static void do_table(void *symval, unsigned long size,
1516 unsigned long id_size,
1517 const char *device_id,
1518 int (*do_entry)(const char *filename, void *symval, char *alias),
1519 struct module *mod)
1520 {
1521 unsigned int i;
1522 char alias[ALIAS_SIZE];
1523
1524 device_id_check(mod->name, device_id, size, id_size, symval);
1525 /* Leave last one: it's the terminator. */
1526 size -= id_size;
1527
1528 for (i = 0; i < size; i += id_size) {
1529 if (do_entry(mod->name, symval+i, alias)) {
1530 buf_printf(&mod->dev_table_buf,
1531 "MODULE_ALIAS(\"%s\");\n", alias);
1532 }
1533 }
1534 }
1535
1536 static const struct devtable devtable[] = {
1537 {"hid", SIZE_hid_device_id, do_hid_entry},
1538 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry},
1539 {"pci", SIZE_pci_device_id, do_pci_entry},
1540 {"ccw", SIZE_ccw_device_id, do_ccw_entry},
1541 {"ap", SIZE_ap_device_id, do_ap_entry},
1542 {"css", SIZE_css_device_id, do_css_entry},
1543 {"serio", SIZE_serio_device_id, do_serio_entry},
1544 {"acpi", SIZE_acpi_device_id, do_acpi_entry},
1545 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry},
1546 {"vio", SIZE_vio_device_id, do_vio_entry},
1547 {"input", SIZE_input_device_id, do_input_entry},
1548 {"eisa", SIZE_eisa_device_id, do_eisa_entry},
1549 {"parisc", SIZE_parisc_device_id, do_parisc_entry},
1550 {"sdio", SIZE_sdio_device_id, do_sdio_entry},
1551 {"ssb", SIZE_ssb_device_id, do_ssb_entry},
1552 {"bcma", SIZE_bcma_device_id, do_bcma_entry},
1553 {"virtio", SIZE_virtio_device_id, do_virtio_entry},
1554 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry},
1555 {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry},
1556 {"i2c", SIZE_i2c_device_id, do_i2c_entry},
1557 {"i3c", SIZE_i3c_device_id, do_i3c_entry},
1558 {"spi", SIZE_spi_device_id, do_spi_entry},
1559 {"dmi", SIZE_dmi_system_id, do_dmi_entry},
1560 {"platform", SIZE_platform_device_id, do_platform_entry},
1561 {"mdio", SIZE_mdio_device_id, do_mdio_entry},
1562 {"zorro", SIZE_zorro_device_id, do_zorro_entry},
1563 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry},
1564 {"ipack", SIZE_ipack_device_id, do_ipack_entry},
1565 {"amba", SIZE_amba_id, do_amba_entry},
1566 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry},
1567 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry},
1568 {"cpu", SIZE_cpu_feature, do_cpu_entry},
1569 {"mei", SIZE_mei_cl_device_id, do_mei_entry},
1570 {"rapidio", SIZE_rio_device_id, do_rio_entry},
1571 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry},
1572 {"hdaudio", SIZE_hda_device_id, do_hda_entry},
1573 {"sdw", SIZE_sdw_device_id, do_sdw_entry},
1574 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry},
1575 {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry},
1576 {"typec", SIZE_typec_device_id, do_typec_entry},
1577 {"tee", SIZE_tee_client_device_id, do_tee_entry},
1578 {"wmi", SIZE_wmi_device_id, do_wmi_entry},
1579 {"mhi", SIZE_mhi_device_id, do_mhi_entry},
1580 {"mhi_ep", SIZE_mhi_device_id, do_mhi_ep_entry},
1581 {"auxiliary", SIZE_auxiliary_device_id, do_auxiliary_entry},
1582 {"ssam", SIZE_ssam_device_id, do_ssam_entry},
1583 {"dfl", SIZE_dfl_device_id, do_dfl_entry},
1584 {"ishtp", SIZE_ishtp_device_id, do_ishtp_entry},
1585 {"cdx", SIZE_cdx_device_id, do_cdx_entry},
1586 {"vchiq", SIZE_vchiq_device_id, do_vchiq_entry},
1587 {"coreboot", SIZE_coreboot_device_id, do_coreboot_entry},
1588 };
1589
1590 /* Create MODULE_ALIAS() statements.
1591 * At this time, we cannot write the actual output C source yet,
1592 * so we write into the mod->dev_table_buf buffer. */
1593 void handle_moddevtable(struct module *mod, struct elf_info *info,
1594 Elf_Sym *sym, const char *symname)
1595 {
1596 void *symval;
1597 char *zeros = NULL;
1598 const char *name, *identifier;
1599 unsigned int namelen;
1600
1601 /* We're looking for a section relative symbol */
1602 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1603 return;
1604
1605 /* We're looking for an object */
1606 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1607 return;
1608
1609 /* All our symbols are of form __mod_<name>__<identifier>_device_table. */
1610 if (strncmp(symname, "__mod_", strlen("__mod_")))
1611 return;
1612 name = symname + strlen("__mod_");
1613 namelen = strlen(name);
1614 if (namelen < strlen("_device_table"))
1615 return;
1616 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1617 return;
1618 identifier = strstr(name, "__");
1619 if (!identifier)
1620 return;
1621 namelen = identifier - name;
1622
1623 /* Handle all-NULL symbols allocated into .bss */
1624 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1625 zeros = calloc(1, sym->st_size);
1626 symval = zeros;
1627 } else {
1628 symval = sym_get_data(info, sym);
1629 }
1630
1631 /* First handle the "special" cases */
1632 if (sym_is(name, namelen, "usb"))
1633 do_usb_table(symval, sym->st_size, mod);
1634 else if (sym_is(name, namelen, "of"))
1635 do_of_table(symval, sym->st_size, mod);
1636 else if (sym_is(name, namelen, "pnp"))
1637 do_pnp_device_entry(symval, sym->st_size, mod);
1638 else if (sym_is(name, namelen, "pnp_card"))
1639 do_pnp_card_entries(symval, sym->st_size, mod);
1640 else {
1641 int i;
1642
1643 for (i = 0; i < ARRAY_SIZE(devtable); i++) {
1644 const struct devtable *p = &devtable[i];
1645
1646 if (sym_is(name, namelen, p->device_id)) {
1647 do_table(symval, sym->st_size, p->id_size,
1648 p->device_id, p->do_entry, mod);
1649 break;
1650 }
1651 }
1652 }
1653 free(zeros);
1654 }
1655
1656 /* Now add out buffered information to the generated C source */
1657 void add_moddevtable(struct buffer *buf, struct module *mod)
1658 {
1659 buf_printf(buf, "\n");
1660 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1661 free(mod->dev_table_buf.p);
1662 }
1663
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