]> git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - scripts/mod/file2alias.c
projects / mirror_ubuntu-jammy-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge tag 'block-5.15-2021-09-11' of git://git.kernel.dk/linux-block
[mirror_ubuntu-jammy-kernel.git] / scripts / mod / file2alias.c
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 typedef struct {
38 __u8 b[16];
39 } guid_t;
40
41 /* backwards compatibility, don't use in new code */
42 typedef struct {
43 __u8 b[16];
44 } uuid_le;
45 typedef 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 */
56 struct 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) \
86 do { \
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 */
99 static inline void add_wildcard(char *str)
100 {
101 int len = strlen(str);
102
103 if (str[len - 1] != '*')
104 strcat(str + len, "*");
105 }
106
107 static 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 **/
125 static 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" */
157 static 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-- */
227 static 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
264 static 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
329 static 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
344 static 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
372 static 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 */
388 static 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 */
406 static 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 or <prefix>_pci:vNdNsvNsdNbcNscNiN. */
430 static 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 DEF_FIELD(symval, pci_device_id, override_only);
444
445 switch (override_only) {
446 case 0:
447 strcpy(alias, "pci:");
448 break;
449 case PCI_ID_F_VFIO_DRIVER_OVERRIDE:
450 strcpy(alias, "vfio_pci:");
451 break;
452 default:
453 warn("Unknown PCI driver_override alias %08X\n",
454 override_only);
455 return 0;
456 }
457
458 ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
459 ADD(alias, "d", device != PCI_ANY_ID, device);
460 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
461 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
462
463 baseclass = (class) >> 16;
464 baseclass_mask = (class_mask) >> 16;
465 subclass = (class) >> 8;
466 subclass_mask = (class_mask) >> 8;
467 interface = class;
468 interface_mask = class_mask;
469
470 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
471 || (subclass_mask != 0 && subclass_mask != 0xFF)
472 || (interface_mask != 0 && interface_mask != 0xFF)) {
473 warn("Can't handle masks in %s:%04X\n",
474 filename, class_mask);
475 return 0;
476 }
477
478 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
479 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
480 ADD(alias, "i", interface_mask == 0xFF, interface);
481 add_wildcard(alias);
482 return 1;
483 }
484
485 /* looks like: "ccw:tNmNdtNdmN" */
486 static int do_ccw_entry(const char *filename,
487 void *symval, char *alias)
488 {
489 DEF_FIELD(symval, ccw_device_id, match_flags);
490 DEF_FIELD(symval, ccw_device_id, cu_type);
491 DEF_FIELD(symval, ccw_device_id, cu_model);
492 DEF_FIELD(symval, ccw_device_id, dev_type);
493 DEF_FIELD(symval, ccw_device_id, dev_model);
494
495 strcpy(alias, "ccw:");
496 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
497 cu_type);
498 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
499 cu_model);
500 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
501 dev_type);
502 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
503 dev_model);
504 add_wildcard(alias);
505 return 1;
506 }
507
508 /* looks like: "ap:tN" */
509 static int do_ap_entry(const char *filename,
510 void *symval, char *alias)
511 {
512 DEF_FIELD(symval, ap_device_id, dev_type);
513
514 sprintf(alias, "ap:t%02X*", dev_type);
515 return 1;
516 }
517
518 /* looks like: "css:tN" */
519 static int do_css_entry(const char *filename,
520 void *symval, char *alias)
521 {
522 DEF_FIELD(symval, css_device_id, type);
523
524 sprintf(alias, "css:t%01X", type);
525 return 1;
526 }
527
528 /* Looks like: "serio:tyNprNidNexN" */
529 static int do_serio_entry(const char *filename,
530 void *symval, char *alias)
531 {
532 DEF_FIELD(symval, serio_device_id, type);
533 DEF_FIELD(symval, serio_device_id, proto);
534 DEF_FIELD(symval, serio_device_id, id);
535 DEF_FIELD(symval, serio_device_id, extra);
536
537 strcpy(alias, "serio:");
538 ADD(alias, "ty", type != SERIO_ANY, type);
539 ADD(alias, "pr", proto != SERIO_ANY, proto);
540 ADD(alias, "id", id != SERIO_ANY, id);
541 ADD(alias, "ex", extra != SERIO_ANY, extra);
542
543 add_wildcard(alias);
544 return 1;
545 }
546
547 /* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or
548 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if)
549 *
550 * NOTE: Each driver should use one of the following : _HID, _CIDs
551 * or _CLS. Also, bb, ss, and pp can be substituted with ??
552 * as don't care byte.
553 */
554 static int do_acpi_entry(const char *filename,
555 void *symval, char *alias)
556 {
557 DEF_FIELD_ADDR(symval, acpi_device_id, id);
558 DEF_FIELD_ADDR(symval, acpi_device_id, cls);
559 DEF_FIELD_ADDR(symval, acpi_device_id, cls_msk);
560
561 if (id && strlen((const char *)*id))
562 sprintf(alias, "acpi*:%s:*", *id);
563 else if (cls) {
564 int i, byte_shift, cnt = 0;
565 unsigned int msk;
566
567 sprintf(&alias[cnt], "acpi*:");
568 cnt = 6;
569 for (i = 1; i <= 3; i++) {
570 byte_shift = 8 * (3-i);
571 msk = (*cls_msk >> byte_shift) & 0xFF;
572 if (msk)
573 sprintf(&alias[cnt], "%02x",
574 (*cls >> byte_shift) & 0xFF);
575 else
576 sprintf(&alias[cnt], "??");
577 cnt += 2;
578 }
579 sprintf(&alias[cnt], ":*");
580 }
581 return 1;
582 }
583
584 /* looks like: "pnp:dD" */
585 static void do_pnp_device_entry(void *symval, unsigned long size,
586 struct module *mod)
587 {
588 const unsigned long id_size = SIZE_pnp_device_id;
589 const unsigned int count = (size / id_size)-1;
590 unsigned int i;
591
592 device_id_check(mod->name, "pnp", size, id_size, symval);
593
594 for (i = 0; i < count; i++) {
595 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id);
596 char acpi_id[sizeof(*id)];
597 int j;
598
599 buf_printf(&mod->dev_table_buf,
600 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
601
602 /* fix broken pnp bus lowercasing */
603 for (j = 0; j < sizeof(acpi_id); j++)
604 acpi_id[j] = toupper((*id)[j]);
605 buf_printf(&mod->dev_table_buf,
606 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
607 }
608 }
609
610 /* looks like: "pnp:dD" for every device of the card */
611 static void do_pnp_card_entries(void *symval, unsigned long size,
612 struct module *mod)
613 {
614 const unsigned long id_size = SIZE_pnp_card_device_id;
615 const unsigned int count = (size / id_size)-1;
616 unsigned int i;
617
618 device_id_check(mod->name, "pnp", size, id_size, symval);
619
620 for (i = 0; i < count; i++) {
621 unsigned int j;
622 DEF_FIELD_ADDR(symval + i * id_size, pnp_card_device_id, devs);
623
624 for (j = 0; j < PNP_MAX_DEVICES; j++) {
625 const char *id = (char *)(*devs)[j].id;
626 int i2, j2;
627 int dup = 0;
628
629 if (!id[0])
630 break;
631
632 /* find duplicate, already added value */
633 for (i2 = 0; i2 < i && !dup; i2++) {
634 DEF_FIELD_ADDR_VAR(symval + i2 * id_size,
635 pnp_card_device_id,
636 devs, devs_dup);
637
638 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
639 const char *id2 =
640 (char *)(*devs_dup)[j2].id;
641
642 if (!id2[0])
643 break;
644
645 if (!strcmp(id, id2)) {
646 dup = 1;
647 break;
648 }
649 }
650 }
651
652 /* add an individual alias for every device entry */
653 if (!dup) {
654 char acpi_id[PNP_ID_LEN];
655 int k;
656
657 buf_printf(&mod->dev_table_buf,
658 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
659
660 /* fix broken pnp bus lowercasing */
661 for (k = 0; k < sizeof(acpi_id); k++)
662 acpi_id[k] = toupper(id[k]);
663 buf_printf(&mod->dev_table_buf,
664 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
665 }
666 }
667 }
668 }
669
670 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
671 static int do_pcmcia_entry(const char *filename,
672 void *symval, char *alias)
673 {
674 unsigned int i;
675 DEF_FIELD(symval, pcmcia_device_id, match_flags);
676 DEF_FIELD(symval, pcmcia_device_id, manf_id);
677 DEF_FIELD(symval, pcmcia_device_id, card_id);
678 DEF_FIELD(symval, pcmcia_device_id, func_id);
679 DEF_FIELD(symval, pcmcia_device_id, function);
680 DEF_FIELD(symval, pcmcia_device_id, device_no);
681 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
682
683 for (i=0; i<4; i++) {
684 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]);
685 }
686
687 strcpy(alias, "pcmcia:");
688 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
689 manf_id);
690 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
691 card_id);
692 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
693 func_id);
694 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
695 function);
696 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
697 device_no);
698 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]);
699 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]);
700 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]);
701 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]);
702
703 add_wildcard(alias);
704 return 1;
705 }
706
707 static int do_vio_entry(const char *filename, void *symval,
708 char *alias)
709 {
710 char *tmp;
711 DEF_FIELD_ADDR(symval, vio_device_id, type);
712 DEF_FIELD_ADDR(symval, vio_device_id, compat);
713
714 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
715 (*compat)[0] ? *compat : "*");
716
717 /* Replace all whitespace with underscores */
718 for (tmp = alias; tmp && *tmp; tmp++)
719 if (isspace (*tmp))
720 *tmp = '_';
721
722 add_wildcard(alias);
723 return 1;
724 }
725
726 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
727
728 static void do_input(char *alias,
729 kernel_ulong_t *arr, unsigned int min, unsigned int max)
730 {
731 unsigned int i;
732
733 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++)
734 arr[i] = TO_NATIVE(arr[i]);
735 for (i = min; i < max; i++)
736 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
737 sprintf(alias + strlen(alias), "%X,*", i);
738 }
739
740 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
741 static int do_input_entry(const char *filename, void *symval,
742 char *alias)
743 {
744 DEF_FIELD(symval, input_device_id, flags);
745 DEF_FIELD(symval, input_device_id, bustype);
746 DEF_FIELD(symval, input_device_id, vendor);
747 DEF_FIELD(symval, input_device_id, product);
748 DEF_FIELD(symval, input_device_id, version);
749 DEF_FIELD_ADDR(symval, input_device_id, evbit);
750 DEF_FIELD_ADDR(symval, input_device_id, keybit);
751 DEF_FIELD_ADDR(symval, input_device_id, relbit);
752 DEF_FIELD_ADDR(symval, input_device_id, absbit);
753 DEF_FIELD_ADDR(symval, input_device_id, mscbit);
754 DEF_FIELD_ADDR(symval, input_device_id, ledbit);
755 DEF_FIELD_ADDR(symval, input_device_id, sndbit);
756 DEF_FIELD_ADDR(symval, input_device_id, ffbit);
757 DEF_FIELD_ADDR(symval, input_device_id, swbit);
758
759 sprintf(alias, "input:");
760
761 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
762 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
763 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
764 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
765
766 sprintf(alias + strlen(alias), "-e*");
767 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
768 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
769 sprintf(alias + strlen(alias), "k*");
770 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
771 do_input(alias, *keybit,
772 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
773 INPUT_DEVICE_ID_KEY_MAX);
774 sprintf(alias + strlen(alias), "r*");
775 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
776 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
777 sprintf(alias + strlen(alias), "a*");
778 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
779 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
780 sprintf(alias + strlen(alias), "m*");
781 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
782 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
783 sprintf(alias + strlen(alias), "l*");
784 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
785 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
786 sprintf(alias + strlen(alias), "s*");
787 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
788 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
789 sprintf(alias + strlen(alias), "f*");
790 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
791 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
792 sprintf(alias + strlen(alias), "w*");
793 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
794 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
795 return 1;
796 }
797
798 static int do_eisa_entry(const char *filename, void *symval,
799 char *alias)
800 {
801 DEF_FIELD_ADDR(symval, eisa_device_id, sig);
802 if (sig[0])
803 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig);
804 else
805 strcat(alias, "*");
806 return 1;
807 }
808
809 /* Looks like: parisc:tNhvNrevNsvN */
810 static int do_parisc_entry(const char *filename, void *symval,
811 char *alias)
812 {
813 DEF_FIELD(symval, parisc_device_id, hw_type);
814 DEF_FIELD(symval, parisc_device_id, hversion);
815 DEF_FIELD(symval, parisc_device_id, hversion_rev);
816 DEF_FIELD(symval, parisc_device_id, sversion);
817
818 strcpy(alias, "parisc:");
819 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
820 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
821 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
822 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
823
824 add_wildcard(alias);
825 return 1;
826 }
827
828 /* Looks like: sdio:cNvNdN. */
829 static int do_sdio_entry(const char *filename,
830 void *symval, char *alias)
831 {
832 DEF_FIELD(symval, sdio_device_id, class);
833 DEF_FIELD(symval, sdio_device_id, vendor);
834 DEF_FIELD(symval, sdio_device_id, device);
835
836 strcpy(alias, "sdio:");
837 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
838 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
839 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
840 add_wildcard(alias);
841 return 1;
842 }
843
844 /* Looks like: ssb:vNidNrevN. */
845 static int do_ssb_entry(const char *filename,
846 void *symval, char *alias)
847 {
848 DEF_FIELD(symval, ssb_device_id, vendor);
849 DEF_FIELD(symval, ssb_device_id, coreid);
850 DEF_FIELD(symval, ssb_device_id, revision);
851
852 strcpy(alias, "ssb:");
853 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
854 ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
855 ADD(alias, "rev", revision != SSB_ANY_REV, revision);
856 add_wildcard(alias);
857 return 1;
858 }
859
860 /* Looks like: bcma:mNidNrevNclN. */
861 static int do_bcma_entry(const char *filename,
862 void *symval, char *alias)
863 {
864 DEF_FIELD(symval, bcma_device_id, manuf);
865 DEF_FIELD(symval, bcma_device_id, id);
866 DEF_FIELD(symval, bcma_device_id, rev);
867 DEF_FIELD(symval, bcma_device_id, class);
868
869 strcpy(alias, "bcma:");
870 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
871 ADD(alias, "id", id != BCMA_ANY_ID, id);
872 ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
873 ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
874 add_wildcard(alias);
875 return 1;
876 }
877
878 /* Looks like: virtio:dNvN */
879 static int do_virtio_entry(const char *filename, void *symval,
880 char *alias)
881 {
882 DEF_FIELD(symval, virtio_device_id, device);
883 DEF_FIELD(symval, virtio_device_id, vendor);
884
885 strcpy(alias, "virtio:");
886 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
887 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
888
889 add_wildcard(alias);
890 return 1;
891 }
892
893 /*
894 * Looks like: vmbus:guid
895 * Each byte of the guid will be represented by two hex characters
896 * in the name.
897 */
898
899 static int do_vmbus_entry(const char *filename, void *symval,
900 char *alias)
901 {
902 int i;
903 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
904 char guid_name[(sizeof(*guid) + 1) * 2];
905
906 for (i = 0; i < (sizeof(*guid) * 2); i += 2)
907 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2]));
908
909 strcpy(alias, "vmbus:");
910 strcat(alias, guid_name);
911
912 return 1;
913 }
914
915 /* Looks like: rpmsg:S */
916 static int do_rpmsg_entry(const char *filename, void *symval,
917 char *alias)
918 {
919 DEF_FIELD_ADDR(symval, rpmsg_device_id, name);
920 sprintf(alias, RPMSG_DEVICE_MODALIAS_FMT, *name);
921
922 return 1;
923 }
924
925 /* Looks like: i2c:S */
926 static int do_i2c_entry(const char *filename, void *symval,
927 char *alias)
928 {
929 DEF_FIELD_ADDR(symval, i2c_device_id, name);
930 sprintf(alias, I2C_MODULE_PREFIX "%s", *name);
931
932 return 1;
933 }
934
935 static int do_i3c_entry(const char *filename, void *symval,
936 char *alias)
937 {
938 DEF_FIELD(symval, i3c_device_id, match_flags);
939 DEF_FIELD(symval, i3c_device_id, dcr);
940 DEF_FIELD(symval, i3c_device_id, manuf_id);
941 DEF_FIELD(symval, i3c_device_id, part_id);
942 DEF_FIELD(symval, i3c_device_id, extra_info);
943
944 strcpy(alias, "i3c:");
945 ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr);
946 ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id);
947 ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id);
948 ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info);
949
950 return 1;
951 }
952
953 /* Looks like: spi:S */
954 static int do_spi_entry(const char *filename, void *symval,
955 char *alias)
956 {
957 DEF_FIELD_ADDR(symval, spi_device_id, name);
958 sprintf(alias, SPI_MODULE_PREFIX "%s", *name);
959
960 return 1;
961 }
962
963 static const struct dmifield {
964 const char *prefix;
965 int field;
966 } dmi_fields[] = {
967 { "bvn", DMI_BIOS_VENDOR },
968 { "bvr", DMI_BIOS_VERSION },
969 { "bd", DMI_BIOS_DATE },
970 { "br", DMI_BIOS_RELEASE },
971 { "efr", DMI_EC_FIRMWARE_RELEASE },
972 { "svn", DMI_SYS_VENDOR },
973 { "pn", DMI_PRODUCT_NAME },
974 { "pvr", DMI_PRODUCT_VERSION },
975 { "rvn", DMI_BOARD_VENDOR },
976 { "rn", DMI_BOARD_NAME },
977 { "rvr", DMI_BOARD_VERSION },
978 { "cvn", DMI_CHASSIS_VENDOR },
979 { "ct", DMI_CHASSIS_TYPE },
980 { "cvr", DMI_CHASSIS_VERSION },
981 { NULL, DMI_NONE }
982 };
983
984 static void dmi_ascii_filter(char *d, const char *s)
985 {
986 /* Filter out characters we don't want to see in the modalias string */
987 for (; *s; s++)
988 if (*s > ' ' && *s < 127 && *s != ':')
989 *(d++) = *s;
990
991 *d = 0;
992 }
993
994
995 static int do_dmi_entry(const char *filename, void *symval,
996 char *alias)
997 {
998 int i, j;
999 DEF_FIELD_ADDR(symval, dmi_system_id, matches);
1000 sprintf(alias, "dmi*");
1001
1002 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
1003 for (j = 0; j < 4; j++) {
1004 if ((*matches)[j].slot &&
1005 (*matches)[j].slot == dmi_fields[i].field) {
1006 sprintf(alias + strlen(alias), ":%s*",
1007 dmi_fields[i].prefix);
1008 dmi_ascii_filter(alias + strlen(alias),
1009 (*matches)[j].substr);
1010 strcat(alias, "*");
1011 }
1012 }
1013 }
1014
1015 strcat(alias, ":");
1016 return 1;
1017 }
1018
1019 static int do_platform_entry(const char *filename,
1020 void *symval, char *alias)
1021 {
1022 DEF_FIELD_ADDR(symval, platform_device_id, name);
1023 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name);
1024 return 1;
1025 }
1026
1027 static int do_mdio_entry(const char *filename,
1028 void *symval, char *alias)
1029 {
1030 int i;
1031 DEF_FIELD(symval, mdio_device_id, phy_id);
1032 DEF_FIELD(symval, mdio_device_id, phy_id_mask);
1033
1034 alias += sprintf(alias, MDIO_MODULE_PREFIX);
1035
1036 for (i = 0; i < 32; i++) {
1037 if (!((phy_id_mask >> (31-i)) & 1))
1038 *(alias++) = '?';
1039 else if ((phy_id >> (31-i)) & 1)
1040 *(alias++) = '1';
1041 else
1042 *(alias++) = '0';
1043 }
1044
1045 /* Terminate the string */
1046 *alias = 0;
1047
1048 return 1;
1049 }
1050
1051 /* Looks like: zorro:iN. */
1052 static int do_zorro_entry(const char *filename, void *symval,
1053 char *alias)
1054 {
1055 DEF_FIELD(symval, zorro_device_id, id);
1056 strcpy(alias, "zorro:");
1057 ADD(alias, "i", id != ZORRO_WILDCARD, id);
1058 return 1;
1059 }
1060
1061 /* looks like: "pnp:dD" */
1062 static int do_isapnp_entry(const char *filename,
1063 void *symval, char *alias)
1064 {
1065 DEF_FIELD(symval, isapnp_device_id, vendor);
1066 DEF_FIELD(symval, isapnp_device_id, function);
1067 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
1068 'A' + ((vendor >> 2) & 0x3f) - 1,
1069 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
1070 'A' + ((vendor >> 8) & 0x1f) - 1,
1071 (function >> 4) & 0x0f, function & 0x0f,
1072 (function >> 12) & 0x0f, (function >> 8) & 0x0f);
1073 return 1;
1074 }
1075
1076 /* Looks like: "ipack:fNvNdN". */
1077 static int do_ipack_entry(const char *filename,
1078 void *symval, char *alias)
1079 {
1080 DEF_FIELD(symval, ipack_device_id, format);
1081 DEF_FIELD(symval, ipack_device_id, vendor);
1082 DEF_FIELD(symval, ipack_device_id, device);
1083 strcpy(alias, "ipack:");
1084 ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
1085 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
1086 ADD(alias, "d", device != IPACK_ANY_ID, device);
1087 add_wildcard(alias);
1088 return 1;
1089 }
1090
1091 /*
1092 * Append a match expression for a single masked hex digit.
1093 * outp points to a pointer to the character at which to append.
1094 * *outp is updated on return to point just after the appended text,
1095 * to facilitate further appending.
1096 */
1097 static void append_nibble_mask(char **outp,
1098 unsigned int nibble, unsigned int mask)
1099 {
1100 char *p = *outp;
1101 unsigned int i;
1102
1103 switch (mask) {
1104 case 0:
1105 *p++ = '?';
1106 break;
1107
1108 case 0xf:
1109 p += sprintf(p, "%X", nibble);
1110 break;
1111
1112 default:
1113 /*
1114 * Dumbly emit a match pattern for all possible matching
1115 * digits. This could be improved in some cases using ranges,
1116 * but it has the advantage of being trivially correct, and is
1117 * often optimal.
1118 */
1119 *p++ = '[';
1120 for (i = 0; i < 0x10; i++)
1121 if ((i & mask) == nibble)
1122 p += sprintf(p, "%X", i);
1123 *p++ = ']';
1124 }
1125
1126 /* Ensure that the string remains NUL-terminated: */
1127 *p = '\0';
1128
1129 /* Advance the caller's end-of-string pointer: */
1130 *outp = p;
1131 }
1132
1133 /*
1134 * looks like: "amba:dN"
1135 *
1136 * N is exactly 8 digits, where each is an upper-case hex digit, or
1137 * a ? or [] pattern matching exactly one digit.
1138 */
1139 static int do_amba_entry(const char *filename,
1140 void *symval, char *alias)
1141 {
1142 unsigned int digit;
1143 char *p = alias;
1144 DEF_FIELD(symval, amba_id, id);
1145 DEF_FIELD(symval, amba_id, mask);
1146
1147 if ((id & mask) != id)
1148 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1149 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1150 filename, id, mask);
1151
1152 p += sprintf(alias, "amba:d");
1153 for (digit = 0; digit < 8; digit++)
1154 append_nibble_mask(&p,
1155 (id >> (4 * (7 - digit))) & 0xf,
1156 (mask >> (4 * (7 - digit))) & 0xf);
1157
1158 return 1;
1159 }
1160
1161 /*
1162 * looks like: "mipscdmm:tN"
1163 *
1164 * N is exactly 2 digits, where each is an upper-case hex digit, or
1165 * a ? or [] pattern matching exactly one digit.
1166 */
1167 static int do_mips_cdmm_entry(const char *filename,
1168 void *symval, char *alias)
1169 {
1170 DEF_FIELD(symval, mips_cdmm_device_id, type);
1171
1172 sprintf(alias, "mipscdmm:t%02X*", type);
1173 return 1;
1174 }
1175
1176 /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
1177 * All fields are numbers. It would be nicer to use strings for vendor
1178 * and feature, but getting those out of the build system here is too
1179 * complicated.
1180 */
1181
1182 static int do_x86cpu_entry(const char *filename, void *symval,
1183 char *alias)
1184 {
1185 DEF_FIELD(symval, x86_cpu_id, feature);
1186 DEF_FIELD(symval, x86_cpu_id, family);
1187 DEF_FIELD(symval, x86_cpu_id, model);
1188 DEF_FIELD(symval, x86_cpu_id, vendor);
1189
1190 strcpy(alias, "cpu:type:x86,");
1191 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
1192 ADD(alias, "fam", family != X86_FAMILY_ANY, family);
1193 ADD(alias, "mod", model != X86_MODEL_ANY, model);
1194 strcat(alias, ":feature:*");
1195 if (feature != X86_FEATURE_ANY)
1196 sprintf(alias + strlen(alias), "%04X*", feature);
1197 return 1;
1198 }
1199
1200 /* LOOKS like cpu:type:*:feature:*FEAT* */
1201 static int do_cpu_entry(const char *filename, void *symval, char *alias)
1202 {
1203 DEF_FIELD(symval, cpu_feature, feature);
1204
1205 sprintf(alias, "cpu:type:*:feature:*%04X*", feature);
1206 return 1;
1207 }
1208
1209 /* Looks like: mei:S:uuid:N:* */
1210 static int do_mei_entry(const char *filename, void *symval,
1211 char *alias)
1212 {
1213 DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
1214 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid);
1215 DEF_FIELD(symval, mei_cl_device_id, version);
1216
1217 sprintf(alias, MEI_CL_MODULE_PREFIX);
1218 sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*");
1219 add_uuid(alias, *uuid);
1220 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version);
1221
1222 strcat(alias, ":*");
1223
1224 return 1;
1225 }
1226
1227 /* Looks like: rapidio:vNdNavNadN */
1228 static int do_rio_entry(const char *filename,
1229 void *symval, char *alias)
1230 {
1231 DEF_FIELD(symval, rio_device_id, did);
1232 DEF_FIELD(symval, rio_device_id, vid);
1233 DEF_FIELD(symval, rio_device_id, asm_did);
1234 DEF_FIELD(symval, rio_device_id, asm_vid);
1235
1236 strcpy(alias, "rapidio:");
1237 ADD(alias, "v", vid != RIO_ANY_ID, vid);
1238 ADD(alias, "d", did != RIO_ANY_ID, did);
1239 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
1240 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
1241
1242 add_wildcard(alias);
1243 return 1;
1244 }
1245
1246 /* Looks like: ulpi:vNpN */
1247 static int do_ulpi_entry(const char *filename, void *symval,
1248 char *alias)
1249 {
1250 DEF_FIELD(symval, ulpi_device_id, vendor);
1251 DEF_FIELD(symval, ulpi_device_id, product);
1252
1253 sprintf(alias, "ulpi:v%04xp%04x", vendor, product);
1254
1255 return 1;
1256 }
1257
1258 /* Looks like: hdaudio:vNrNaN */
1259 static int do_hda_entry(const char *filename, void *symval, char *alias)
1260 {
1261 DEF_FIELD(symval, hda_device_id, vendor_id);
1262 DEF_FIELD(symval, hda_device_id, rev_id);
1263 DEF_FIELD(symval, hda_device_id, api_version);
1264
1265 strcpy(alias, "hdaudio:");
1266 ADD(alias, "v", vendor_id != 0, vendor_id);
1267 ADD(alias, "r", rev_id != 0, rev_id);
1268 ADD(alias, "a", api_version != 0, api_version);
1269
1270 add_wildcard(alias);
1271 return 1;
1272 }
1273
1274 /* Looks like: sdw:mNpNvNcN */
1275 static int do_sdw_entry(const char *filename, void *symval, char *alias)
1276 {
1277 DEF_FIELD(symval, sdw_device_id, mfg_id);
1278 DEF_FIELD(symval, sdw_device_id, part_id);
1279 DEF_FIELD(symval, sdw_device_id, sdw_version);
1280 DEF_FIELD(symval, sdw_device_id, class_id);
1281
1282 strcpy(alias, "sdw:");
1283 ADD(alias, "m", mfg_id != 0, mfg_id);
1284 ADD(alias, "p", part_id != 0, part_id);
1285 ADD(alias, "v", sdw_version != 0, sdw_version);
1286 ADD(alias, "c", class_id != 0, class_id);
1287
1288 add_wildcard(alias);
1289 return 1;
1290 }
1291
1292 /* Looks like: fsl-mc:vNdN */
1293 static int do_fsl_mc_entry(const char *filename, void *symval,
1294 char *alias)
1295 {
1296 DEF_FIELD(symval, fsl_mc_device_id, vendor);
1297 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type);
1298
1299 sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type);
1300 return 1;
1301 }
1302
1303 /* Looks like: tbsvc:kSpNvNrN */
1304 static int do_tbsvc_entry(const char *filename, void *symval, char *alias)
1305 {
1306 DEF_FIELD(symval, tb_service_id, match_flags);
1307 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key);
1308 DEF_FIELD(symval, tb_service_id, protocol_id);
1309 DEF_FIELD(symval, tb_service_id, protocol_version);
1310 DEF_FIELD(symval, tb_service_id, protocol_revision);
1311
1312 strcpy(alias, "tbsvc:");
1313 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY)
1314 sprintf(alias + strlen(alias), "k%s", *protocol_key);
1315 else
1316 strcat(alias + strlen(alias), "k*");
1317 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id);
1318 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION,
1319 protocol_version);
1320 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION,
1321 protocol_revision);
1322
1323 add_wildcard(alias);
1324 return 1;
1325 }
1326
1327 /* Looks like: typec:idNmN */
1328 static int do_typec_entry(const char *filename, void *symval, char *alias)
1329 {
1330 DEF_FIELD(symval, typec_device_id, svid);
1331 DEF_FIELD(symval, typec_device_id, mode);
1332
1333 sprintf(alias, "typec:id%04X", svid);
1334 ADD(alias, "m", mode != TYPEC_ANY_MODE, mode);
1335
1336 return 1;
1337 }
1338
1339 /* Looks like: tee:uuid */
1340 static int do_tee_entry(const char *filename, void *symval, char *alias)
1341 {
1342 DEF_FIELD(symval, tee_client_device_id, uuid);
1343
1344 sprintf(alias, "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
1345 uuid.b[0], uuid.b[1], uuid.b[2], uuid.b[3], uuid.b[4],
1346 uuid.b[5], uuid.b[6], uuid.b[7], uuid.b[8], uuid.b[9],
1347 uuid.b[10], uuid.b[11], uuid.b[12], uuid.b[13], uuid.b[14],
1348 uuid.b[15]);
1349
1350 add_wildcard(alias);
1351 return 1;
1352 }
1353
1354 /* Looks like: wmi:guid */
1355 static int do_wmi_entry(const char *filename, void *symval, char *alias)
1356 {
1357 int len;
1358 DEF_FIELD_ADDR(symval, wmi_device_id, guid_string);
1359
1360 if (strlen(*guid_string) != UUID_STRING_LEN) {
1361 warn("Invalid WMI device id 'wmi:%s' in '%s'\n",
1362 *guid_string, filename);
1363 return 0;
1364 }
1365
1366 len = snprintf(alias, ALIAS_SIZE, WMI_MODULE_PREFIX "%s", *guid_string);
1367 if (len < 0 || len >= ALIAS_SIZE) {
1368 warn("Could not generate all MODULE_ALIAS's in '%s'\n",
1369 filename);
1370 return 0;
1371 }
1372 return 1;
1373 }
1374
1375 /* Looks like: mhi:S */
1376 static int do_mhi_entry(const char *filename, void *symval, char *alias)
1377 {
1378 DEF_FIELD_ADDR(symval, mhi_device_id, chan);
1379 sprintf(alias, MHI_DEVICE_MODALIAS_FMT, *chan);
1380 return 1;
1381 }
1382
1383 static int do_auxiliary_entry(const char *filename, void *symval, char *alias)
1384 {
1385 DEF_FIELD_ADDR(symval, auxiliary_device_id, name);
1386 sprintf(alias, AUXILIARY_MODULE_PREFIX "%s", *name);
1387
1388 return 1;
1389 }
1390
1391 /*
1392 * Looks like: ssam:dNcNtNiNfN
1393 *
1394 * N is exactly 2 digits, where each is an upper-case hex digit.
1395 */
1396 static int do_ssam_entry(const char *filename, void *symval, char *alias)
1397 {
1398 DEF_FIELD(symval, ssam_device_id, match_flags);
1399 DEF_FIELD(symval, ssam_device_id, domain);
1400 DEF_FIELD(symval, ssam_device_id, category);
1401 DEF_FIELD(symval, ssam_device_id, target);
1402 DEF_FIELD(symval, ssam_device_id, instance);
1403 DEF_FIELD(symval, ssam_device_id, function);
1404
1405 sprintf(alias, "ssam:d%02Xc%02X", domain, category);
1406 ADD(alias, "t", match_flags & SSAM_MATCH_TARGET, target);
1407 ADD(alias, "i", match_flags & SSAM_MATCH_INSTANCE, instance);
1408 ADD(alias, "f", match_flags & SSAM_MATCH_FUNCTION, function);
1409
1410 return 1;
1411 }
1412
1413 /* Looks like: dfl:tNfN */
1414 static int do_dfl_entry(const char *filename, void *symval, char *alias)
1415 {
1416 DEF_FIELD(symval, dfl_device_id, type);
1417 DEF_FIELD(symval, dfl_device_id, feature_id);
1418
1419 sprintf(alias, "dfl:t%04Xf%04X", type, feature_id);
1420
1421 add_wildcard(alias);
1422 return 1;
1423 }
1424
1425 /* Does namelen bytes of name exactly match the symbol? */
1426 static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1427 {
1428 if (namelen != strlen(symbol))
1429 return false;
1430
1431 return memcmp(name, symbol, namelen) == 0;
1432 }
1433
1434 static void do_table(void *symval, unsigned long size,
1435 unsigned long id_size,
1436 const char *device_id,
1437 int (*do_entry)(const char *filename, void *symval, char *alias),
1438 struct module *mod)
1439 {
1440 unsigned int i;
1441 char alias[ALIAS_SIZE];
1442
1443 device_id_check(mod->name, device_id, size, id_size, symval);
1444 /* Leave last one: it's the terminator. */
1445 size -= id_size;
1446
1447 for (i = 0; i < size; i += id_size) {
1448 if (do_entry(mod->name, symval+i, alias)) {
1449 buf_printf(&mod->dev_table_buf,
1450 "MODULE_ALIAS(\"%s\");\n", alias);
1451 }
1452 }
1453 }
1454
1455 static const struct devtable devtable[] = {
1456 {"hid", SIZE_hid_device_id, do_hid_entry},
1457 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry},
1458 {"pci", SIZE_pci_device_id, do_pci_entry},
1459 {"ccw", SIZE_ccw_device_id, do_ccw_entry},
1460 {"ap", SIZE_ap_device_id, do_ap_entry},
1461 {"css", SIZE_css_device_id, do_css_entry},
1462 {"serio", SIZE_serio_device_id, do_serio_entry},
1463 {"acpi", SIZE_acpi_device_id, do_acpi_entry},
1464 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry},
1465 {"vio", SIZE_vio_device_id, do_vio_entry},
1466 {"input", SIZE_input_device_id, do_input_entry},
1467 {"eisa", SIZE_eisa_device_id, do_eisa_entry},
1468 {"parisc", SIZE_parisc_device_id, do_parisc_entry},
1469 {"sdio", SIZE_sdio_device_id, do_sdio_entry},
1470 {"ssb", SIZE_ssb_device_id, do_ssb_entry},
1471 {"bcma", SIZE_bcma_device_id, do_bcma_entry},
1472 {"virtio", SIZE_virtio_device_id, do_virtio_entry},
1473 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry},
1474 {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry},
1475 {"i2c", SIZE_i2c_device_id, do_i2c_entry},
1476 {"i3c", SIZE_i3c_device_id, do_i3c_entry},
1477 {"spi", SIZE_spi_device_id, do_spi_entry},
1478 {"dmi", SIZE_dmi_system_id, do_dmi_entry},
1479 {"platform", SIZE_platform_device_id, do_platform_entry},
1480 {"mdio", SIZE_mdio_device_id, do_mdio_entry},
1481 {"zorro", SIZE_zorro_device_id, do_zorro_entry},
1482 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry},
1483 {"ipack", SIZE_ipack_device_id, do_ipack_entry},
1484 {"amba", SIZE_amba_id, do_amba_entry},
1485 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry},
1486 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry},
1487 {"cpu", SIZE_cpu_feature, do_cpu_entry},
1488 {"mei", SIZE_mei_cl_device_id, do_mei_entry},
1489 {"rapidio", SIZE_rio_device_id, do_rio_entry},
1490 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry},
1491 {"hdaudio", SIZE_hda_device_id, do_hda_entry},
1492 {"sdw", SIZE_sdw_device_id, do_sdw_entry},
1493 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry},
1494 {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry},
1495 {"typec", SIZE_typec_device_id, do_typec_entry},
1496 {"tee", SIZE_tee_client_device_id, do_tee_entry},
1497 {"wmi", SIZE_wmi_device_id, do_wmi_entry},
1498 {"mhi", SIZE_mhi_device_id, do_mhi_entry},
1499 {"auxiliary", SIZE_auxiliary_device_id, do_auxiliary_entry},
1500 {"ssam", SIZE_ssam_device_id, do_ssam_entry},
1501 {"dfl", SIZE_dfl_device_id, do_dfl_entry},
1502 };
1503
1504 /* Create MODULE_ALIAS() statements.
1505 * At this time, we cannot write the actual output C source yet,
1506 * so we write into the mod->dev_table_buf buffer. */
1507 void handle_moddevtable(struct module *mod, struct elf_info *info,
1508 Elf_Sym *sym, const char *symname)
1509 {
1510 void *symval;
1511 char *zeros = NULL;
1512 const char *name, *identifier;
1513 unsigned int namelen;
1514
1515 /* We're looking for a section relative symbol */
1516 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1517 return;
1518
1519 /* We're looking for an object */
1520 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1521 return;
1522
1523 /* All our symbols are of form __mod_<name>__<identifier>_device_table. */
1524 if (strncmp(symname, "__mod_", strlen("__mod_")))
1525 return;
1526 name = symname + strlen("__mod_");
1527 namelen = strlen(name);
1528 if (namelen < strlen("_device_table"))
1529 return;
1530 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1531 return;
1532 identifier = strstr(name, "__");
1533 if (!identifier)
1534 return;
1535 namelen = identifier - name;
1536
1537 /* Handle all-NULL symbols allocated into .bss */
1538 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1539 zeros = calloc(1, sym->st_size);
1540 symval = zeros;
1541 } else {
1542 symval = (void *)info->hdr
1543 + info->sechdrs[get_secindex(info, sym)].sh_offset
1544 + sym->st_value;
1545 }
1546
1547 /* First handle the "special" cases */
1548 if (sym_is(name, namelen, "usb"))
1549 do_usb_table(symval, sym->st_size, mod);
1550 if (sym_is(name, namelen, "of"))
1551 do_of_table(symval, sym->st_size, mod);
1552 else if (sym_is(name, namelen, "pnp"))
1553 do_pnp_device_entry(symval, sym->st_size, mod);
1554 else if (sym_is(name, namelen, "pnp_card"))
1555 do_pnp_card_entries(symval, sym->st_size, mod);
1556 else {
1557 int i;
1558
1559 for (i = 0; i < ARRAY_SIZE(devtable); i++) {
1560 const struct devtable *p = &devtable[i];
1561
1562 if (sym_is(name, namelen, p->device_id)) {
1563 do_table(symval, sym->st_size, p->id_size,
1564 p->device_id, p->do_entry, mod);
1565 break;
1566 }
1567 }
1568 }
1569 free(zeros);
1570 }
1571
1572 /* Now add out buffered information to the generated C source */
1573 void add_moddevtable(struct buffer *buf, struct module *mod)
1574 {
1575 buf_printf(buf, "\n");
1576 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1577 free(mod->dev_table_buf.p);
1578 }
Ubuntu Jammy Linux kernel mirror