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1/* Simple code to turn various tables in an ELF file into alias definitions.
2 * This deals with kernel datastructures where they should be
3 * dealt with: in the kernel source.
4 *
5 * Copyright 2002-2003 Rusty Russell, IBM Corporation
6 * 2003 Kai Germaschewski
7 *
8 *
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
11 */
12
13#include "modpost.h"
14#include "devicetable-offsets.h"
15
16/* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
17 * use either stdint.h or inttypes.h for the rest. */
18#if KERNEL_ELFCLASS == ELFCLASS32
19typedef Elf32_Addr kernel_ulong_t;
20#define BITS_PER_LONG 32
21#else
22typedef Elf64_Addr kernel_ulong_t;
23#define BITS_PER_LONG 64
24#endif
25#ifdef __sun__
26#include <inttypes.h>
27#else
28#include <stdint.h>
29#endif
30
31#include <ctype.h>
32#include <stdbool.h>
33
34typedef uint32_t __u32;
35typedef uint16_t __u16;
36typedef unsigned char __u8;
37typedef struct {
38 __u8 b[16];
39} guid_t;
40
41/* backwards compatibility, don't use in new code */
42typedef struct {
43 __u8 b[16];
44} uuid_le;
45typedef struct {
46 __u8 b[16];
47} uuid_t;
48#define UUID_STRING_LEN 36
49
50/* Big exception to the "don't include kernel headers into userspace, which
51 * even potentially has different endianness and word sizes, since
52 * we handle those differences explicitly below */
53#include "../../include/linux/mod_devicetable.h"
54
55/* This array collects all instances that use the generic do_table */
56struct devtable {
57 const char *device_id; /* name of table, __mod_<name>__*_device_table. */
58 unsigned long id_size;
59 int (*do_entry)(const char *filename, void *symval, char *alias);
60};
61
62/* Size of alias provided to do_entry functions */
63#define ALIAS_SIZE 500
64
65/* Define a variable f that holds the value of field f of struct devid
66 * based at address m.
67 */
68#define DEF_FIELD(m, devid, f) \
69 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f))
70
71/* Define a variable v that holds the address of field f of struct devid
72 * based at address m. Due to the way typeof works, for a field of type
73 * T[N] the variable has type T(*)[N], _not_ T*.
74 */
75#define DEF_FIELD_ADDR_VAR(m, devid, f, v) \
76 typeof(((struct devid *)0)->f) *v = ((m) + OFF_##devid##_##f)
77
78/* Define a variable f that holds the address of field f of struct devid
79 * based at address m. Due to the way typeof works, for a field of type
80 * T[N] the variable has type T(*)[N], _not_ T*.
81 */
82#define DEF_FIELD_ADDR(m, devid, f) \
83 DEF_FIELD_ADDR_VAR(m, devid, f, f)
84
85#define ADD(str, sep, cond, field) \
86do { \
87 strcat(str, sep); \
88 if (cond) \
89 sprintf(str + strlen(str), \
90 sizeof(field) == 1 ? "%02X" : \
91 sizeof(field) == 2 ? "%04X" : \
92 sizeof(field) == 4 ? "%08X" : "", \
93 field); \
94 else \
95 sprintf(str + strlen(str), "*"); \
96} while(0)
97
98/* End in a wildcard, for future extension */
99static inline void add_wildcard(char *str)
100{
101 int len = strlen(str);
102
103 if (str[len - 1] != '*')
104 strcat(str + len, "*");
105}
106
107static inline void add_uuid(char *str, uuid_le uuid)
108{
109 int len = strlen(str);
110
111 sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
112 uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0],
113 uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6],
114 uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11],
115 uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]);
116}
117
118/**
119 * Check that sizeof(device_id type) are consistent with size of section
120 * in .o file. If in-consistent then userspace and kernel does not agree
121 * on actual size which is a bug.
122 * Also verify that the final entry in the table is all zeros.
123 * Ignore both checks if build host differ from target host and size differs.
124 **/
125static void device_id_check(const char *modname, const char *device_id,
126 unsigned long size, unsigned long id_size,
127 void *symval)
128{
129 int i;
130
131 if (size % id_size || size < id_size) {
132 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
133 "of the size of "
134 "section __mod_%s__<identifier>_device_table=%lu.\n"
135 "Fix definition of struct %s_device_id "
136 "in mod_devicetable.h\n",
137 modname, device_id, id_size, device_id, size, device_id);
138 }
139 /* Verify last one is a terminator */
140 for (i = 0; i < id_size; i++ ) {
141 if (*(uint8_t*)(symval+size-id_size+i)) {
142 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
143 "The last of %lu is:\n",
144 modname, device_id, id_size, size / id_size);
145 for (i = 0; i < id_size; i++ )
146 fprintf(stderr,"0x%02x ",
147 *(uint8_t*)(symval+size-id_size+i) );
148 fprintf(stderr,"\n");
149 fatal("%s: struct %s_device_id is not terminated "
150 "with a NULL entry!\n", modname, device_id);
151 }
152 }
153}
154
155/* USB is special because the bcdDevice can be matched against a numeric range */
156/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
157static void do_usb_entry(void *symval,
158 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
159 unsigned char range_lo, unsigned char range_hi,
160 unsigned char max, struct module *mod)
161{
162 char alias[500];
163 DEF_FIELD(symval, usb_device_id, match_flags);
164 DEF_FIELD(symval, usb_device_id, idVendor);
165 DEF_FIELD(symval, usb_device_id, idProduct);
166 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
167 DEF_FIELD(symval, usb_device_id, bDeviceClass);
168 DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
169 DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
170 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
171 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
172 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
173 DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
174
175 strcpy(alias, "usb:");
176 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
177 idVendor);
178 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
179 idProduct);
180
181 strcat(alias, "d");
182 if (bcdDevice_initial_digits)
183 sprintf(alias + strlen(alias), "%0*X",
184 bcdDevice_initial_digits, bcdDevice_initial);
185 if (range_lo == range_hi)
186 sprintf(alias + strlen(alias), "%X", range_lo);
187 else if (range_lo > 0 || range_hi < max) {
188 if (range_lo > 0x9 || range_hi < 0xA)
189 sprintf(alias + strlen(alias),
190 "[%X-%X]",
191 range_lo,
192 range_hi);
193 else {
194 sprintf(alias + strlen(alias),
195 range_lo < 0x9 ? "[%X-9" : "[%X",
196 range_lo);
197 sprintf(alias + strlen(alias),
198 range_hi > 0xA ? "A-%X]" : "%X]",
199 range_hi);
200 }
201 }
202 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
203 strcat(alias, "*");
204
205 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
206 bDeviceClass);
207 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
208 bDeviceSubClass);
209 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
210 bDeviceProtocol);
211 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
212 bInterfaceClass);
213 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
214 bInterfaceSubClass);
215 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
216 bInterfaceProtocol);
217 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
218 bInterfaceNumber);
219
220 add_wildcard(alias);
221 buf_printf(&mod->dev_table_buf,
222 "MODULE_ALIAS(\"%s\");\n", alias);
223}
224
225/* Handles increment/decrement of BCD formatted integers */
226/* Returns the previous value, so it works like i++ or i-- */
227static unsigned int incbcd(unsigned int *bcd,
228 int inc,
229 unsigned char max,
230 size_t chars)
231{
232 unsigned int init = *bcd, i, j;
233 unsigned long long c, dec = 0;
234
235 /* If bcd is not in BCD format, just increment */
236 if (max > 0x9) {
237 *bcd += inc;
238 return init;
239 }
240
241 /* Convert BCD to Decimal */
242 for (i=0 ; i < chars ; i++) {
243 c = (*bcd >> (i << 2)) & 0xf;
244 c = c > 9 ? 9 : c; /* force to bcd just in case */
245 for (j=0 ; j < i ; j++)
246 c = c * 10;
247 dec += c;
248 }
249
250 /* Do our increment/decrement */
251 dec += inc;
252 *bcd = 0;
253
254 /* Convert back to BCD */
255 for (i=0 ; i < chars ; i++) {
256 for (c=1,j=0 ; j < i ; j++)
257 c = c * 10;
258 c = (dec / c) % 10;
259 *bcd += c << (i << 2);
260 }
261 return init;
262}
263
264static void do_usb_entry_multi(void *symval, struct module *mod)
265{
266 unsigned int devlo, devhi;
267 unsigned char chi, clo, max;
268 int ndigits;
269
270 DEF_FIELD(symval, usb_device_id, match_flags);
271 DEF_FIELD(symval, usb_device_id, idVendor);
272 DEF_FIELD(symval, usb_device_id, idProduct);
273 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
274 DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
275 DEF_FIELD(symval, usb_device_id, bDeviceClass);
276 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
277
278 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
279 bcdDevice_lo : 0x0U;
280 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
281 bcdDevice_hi : ~0x0U;
282
283 /* Figure out if this entry is in bcd or hex format */
284 max = 0x9; /* Default to decimal format */
285 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
286 clo = (devlo >> (ndigits << 2)) & 0xf;
287 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
288 if (clo > max || chi > max) {
289 max = 0xf;
290 break;
291 }
292 }
293
294 /*
295 * Some modules (visor) have empty slots as placeholder for
296 * run-time specification that results in catch-all alias
297 */
298 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
299 return;
300
301 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
302 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
303 clo = devlo & 0xf;
304 chi = devhi & 0xf;
305 if (chi > max) /* If we are in bcd mode, truncate if necessary */
306 chi = max;
307 devlo >>= 4;
308 devhi >>= 4;
309
310 if (devlo == devhi || !ndigits) {
311 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
312 break;
313 }
314
315 if (clo > 0x0)
316 do_usb_entry(symval,
317 incbcd(&devlo, 1, max,
318 sizeof(bcdDevice_lo) * 2),
319 ndigits, clo, max, max, mod);
320
321 if (chi < max)
322 do_usb_entry(symval,
323 incbcd(&devhi, -1, max,
324 sizeof(bcdDevice_lo) * 2),
325 ndigits, 0x0, chi, max, mod);
326 }
327}
328
329static void do_usb_table(void *symval, unsigned long size,
330 struct module *mod)
331{
332 unsigned int i;
333 const unsigned long id_size = SIZE_usb_device_id;
334
335 device_id_check(mod->name, "usb", size, id_size, symval);
336
337 /* Leave last one: it's the terminator. */
338 size -= id_size;
339
340 for (i = 0; i < size; i += id_size)
341 do_usb_entry_multi(symval + i, mod);
342}
343
344static void do_of_entry_multi(void *symval, struct module *mod)
345{
346 char alias[500];
347 int len;
348 char *tmp;
349
350 DEF_FIELD_ADDR(symval, of_device_id, name);
351 DEF_FIELD_ADDR(symval, of_device_id, type);
352 DEF_FIELD_ADDR(symval, of_device_id, compatible);
353
354 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
355 (*type)[0] ? *type : "*");
356
357 if ((*compatible)[0])
358 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
359 *compatible);
360
361 /* Replace all whitespace with underscores */
362 for (tmp = alias; tmp && *tmp; tmp++)
363 if (isspace(*tmp))
364 *tmp = '_';
365
366 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
367 strcat(alias, "C");
368 add_wildcard(alias);
369 buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
370}
371
372static void do_of_table(void *symval, unsigned long size,
373 struct module *mod)
374{
375 unsigned int i;
376 const unsigned long id_size = SIZE_of_device_id;
377
378 device_id_check(mod->name, "of", size, id_size, symval);
379
380 /* Leave last one: it's the terminator. */
381 size -= id_size;
382
383 for (i = 0; i < size; i += id_size)
384 do_of_entry_multi(symval + i, mod);
385}
386
387/* Looks like: hid:bNvNpN */
388static int do_hid_entry(const char *filename,
389 void *symval, char *alias)
390{
391 DEF_FIELD(symval, hid_device_id, bus);
392 DEF_FIELD(symval, hid_device_id, group);
393 DEF_FIELD(symval, hid_device_id, vendor);
394 DEF_FIELD(symval, hid_device_id, product);
395
396 sprintf(alias, "hid:");
397 ADD(alias, "b", bus != HID_BUS_ANY, bus);
398 ADD(alias, "g", group != HID_GROUP_ANY, group);
399 ADD(alias, "v", vendor != HID_ANY_ID, vendor);
400 ADD(alias, "p", product != HID_ANY_ID, product);
401
402 return 1;
403}
404
405/* Looks like: ieee1394:venNmoNspNverN */
406static int do_ieee1394_entry(const char *filename,
407 void *symval, char *alias)
408{
409 DEF_FIELD(symval, ieee1394_device_id, match_flags);
410 DEF_FIELD(symval, ieee1394_device_id, vendor_id);
411 DEF_FIELD(symval, ieee1394_device_id, model_id);
412 DEF_FIELD(symval, ieee1394_device_id, specifier_id);
413 DEF_FIELD(symval, ieee1394_device_id, version);
414
415 strcpy(alias, "ieee1394:");
416 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
417 vendor_id);
418 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
419 model_id);
420 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
421 specifier_id);
422 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
423 version);
424
425 add_wildcard(alias);
426 return 1;
427}
428
429/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
430static int do_pci_entry(const char *filename,
431 void *symval, char *alias)
432{
433 /* Class field can be divided into these three. */
434 unsigned char baseclass, subclass, interface,
435 baseclass_mask, subclass_mask, interface_mask;
436
437 DEF_FIELD(symval, pci_device_id, vendor);
438 DEF_FIELD(symval, pci_device_id, device);
439 DEF_FIELD(symval, pci_device_id, subvendor);
440 DEF_FIELD(symval, pci_device_id, subdevice);
441 DEF_FIELD(symval, pci_device_id, class);
442 DEF_FIELD(symval, pci_device_id, class_mask);
443
444 strcpy(alias, "pci:");
445 ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
446 ADD(alias, "d", device != PCI_ANY_ID, device);
447 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
448 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
449
450 baseclass = (class) >> 16;
451 baseclass_mask = (class_mask) >> 16;
452 subclass = (class) >> 8;
453 subclass_mask = (class_mask) >> 8;
454 interface = class;
455 interface_mask = class_mask;
456
457 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
458 || (subclass_mask != 0 && subclass_mask != 0xFF)
459 || (interface_mask != 0 && interface_mask != 0xFF)) {
460 warn("Can't handle masks in %s:%04X\n",
461 filename, class_mask);
462 return 0;
463 }
464
465 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
466 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
467 ADD(alias, "i", interface_mask == 0xFF, interface);
468 add_wildcard(alias);
469 return 1;
470}
471
472/* looks like: "ccw:tNmNdtNdmN" */
473static int do_ccw_entry(const char *filename,
474 void *symval, char *alias)
475{
476 DEF_FIELD(symval, ccw_device_id, match_flags);
477 DEF_FIELD(symval, ccw_device_id, cu_type);
478 DEF_FIELD(symval, ccw_device_id, cu_model);
479 DEF_FIELD(symval, ccw_device_id, dev_type);
480 DEF_FIELD(symval, ccw_device_id, dev_model);
481
482 strcpy(alias, "ccw:");
483 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
484 cu_type);
485 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
486 cu_model);
487 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
488 dev_type);
489 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
490 dev_model);
491 add_wildcard(alias);
492 return 1;
493}
494
495/* looks like: "ap:tN" */
496static int do_ap_entry(const char *filename,
497 void *symval, char *alias)
498{
499 DEF_FIELD(symval, ap_device_id, dev_type);
500
501 sprintf(alias, "ap:t%02X*", dev_type);
502 return 1;
503}
504
505/* looks like: "css:tN" */
506static int do_css_entry(const char *filename,
507 void *symval, char *alias)
508{
509 DEF_FIELD(symval, css_device_id, type);
510
511 sprintf(alias, "css:t%01X", type);
512 return 1;
513}
514
515/* Looks like: "serio:tyNprNidNexN" */
516static int do_serio_entry(const char *filename,
517 void *symval, char *alias)
518{
519 DEF_FIELD(symval, serio_device_id, type);
520 DEF_FIELD(symval, serio_device_id, proto);
521 DEF_FIELD(symval, serio_device_id, id);
522 DEF_FIELD(symval, serio_device_id, extra);
523
524 strcpy(alias, "serio:");
525 ADD(alias, "ty", type != SERIO_ANY, type);
526 ADD(alias, "pr", proto != SERIO_ANY, proto);
527 ADD(alias, "id", id != SERIO_ANY, id);
528 ADD(alias, "ex", extra != SERIO_ANY, extra);
529
530 add_wildcard(alias);
531 return 1;
532}
533
534/* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or
535 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if)
536 *
537 * NOTE: Each driver should use one of the following : _HID, _CIDs
538 * or _CLS. Also, bb, ss, and pp can be substituted with ??
539 * as don't care byte.
540 */
541static int do_acpi_entry(const char *filename,
542 void *symval, char *alias)
543{
544 DEF_FIELD_ADDR(symval, acpi_device_id, id);
545 DEF_FIELD_ADDR(symval, acpi_device_id, cls);
546 DEF_FIELD_ADDR(symval, acpi_device_id, cls_msk);
547
548 if (id && strlen((const char *)*id))
549 sprintf(alias, "acpi*:%s:*", *id);
550 else if (cls) {
551 int i, byte_shift, cnt = 0;
552 unsigned int msk;
553
554 sprintf(&alias[cnt], "acpi*:");
555 cnt = 6;
556 for (i = 1; i <= 3; i++) {
557 byte_shift = 8 * (3-i);
558 msk = (*cls_msk >> byte_shift) & 0xFF;
559 if (msk)
560 sprintf(&alias[cnt], "%02x",
561 (*cls >> byte_shift) & 0xFF);
562 else
563 sprintf(&alias[cnt], "??");
564 cnt += 2;
565 }
566 sprintf(&alias[cnt], ":*");
567 }
568 return 1;
569}
570
571/* looks like: "pnp:dD" */
572static void do_pnp_device_entry(void *symval, unsigned long size,
573 struct module *mod)
574{
575 const unsigned long id_size = SIZE_pnp_device_id;
576 const unsigned int count = (size / id_size)-1;
577 unsigned int i;
578
579 device_id_check(mod->name, "pnp", size, id_size, symval);
580
581 for (i = 0; i < count; i++) {
582 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id);
583 char acpi_id[sizeof(*id)];
584 int j;
585
586 buf_printf(&mod->dev_table_buf,
587 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
588
589 /* fix broken pnp bus lowercasing */
590 for (j = 0; j < sizeof(acpi_id); j++)
591 acpi_id[j] = toupper((*id)[j]);
592 buf_printf(&mod->dev_table_buf,
593 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
594 }
595}
596
597/* looks like: "pnp:dD" for every device of the card */
598static void do_pnp_card_entries(void *symval, unsigned long size,
599 struct module *mod)
600{
601 const unsigned long id_size = SIZE_pnp_card_device_id;
602 const unsigned int count = (size / id_size)-1;
603 unsigned int i;
604
605 device_id_check(mod->name, "pnp", size, id_size, symval);
606
607 for (i = 0; i < count; i++) {
608 unsigned int j;
609 DEF_FIELD_ADDR(symval + i * id_size, pnp_card_device_id, devs);
610
611 for (j = 0; j < PNP_MAX_DEVICES; j++) {
612 const char *id = (char *)(*devs)[j].id;
613 int i2, j2;
614 int dup = 0;
615
616 if (!id[0])
617 break;
618
619 /* find duplicate, already added value */
620 for (i2 = 0; i2 < i && !dup; i2++) {
621 DEF_FIELD_ADDR_VAR(symval + i2 * id_size,
622 pnp_card_device_id,
623 devs, devs_dup);
624
625 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
626 const char *id2 =
627 (char *)(*devs_dup)[j2].id;
628
629 if (!id2[0])
630 break;
631
632 if (!strcmp(id, id2)) {
633 dup = 1;
634 break;
635 }
636 }
637 }
638
639 /* add an individual alias for every device entry */
640 if (!dup) {
641 char acpi_id[PNP_ID_LEN];
642 int k;
643
644 buf_printf(&mod->dev_table_buf,
645 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
646
647 /* fix broken pnp bus lowercasing */
648 for (k = 0; k < sizeof(acpi_id); k++)
649 acpi_id[k] = toupper(id[k]);
650 buf_printf(&mod->dev_table_buf,
651 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
652 }
653 }
654 }
655}
656
657/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
658static int do_pcmcia_entry(const char *filename,
659 void *symval, char *alias)
660{
661 unsigned int i;
662 DEF_FIELD(symval, pcmcia_device_id, match_flags);
663 DEF_FIELD(symval, pcmcia_device_id, manf_id);
664 DEF_FIELD(symval, pcmcia_device_id, card_id);
665 DEF_FIELD(symval, pcmcia_device_id, func_id);
666 DEF_FIELD(symval, pcmcia_device_id, function);
667 DEF_FIELD(symval, pcmcia_device_id, device_no);
668 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
669
670 for (i=0; i<4; i++) {
671 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]);
672 }
673
674 strcpy(alias, "pcmcia:");
675 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
676 manf_id);
677 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
678 card_id);
679 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
680 func_id);
681 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
682 function);
683 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
684 device_no);
685 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]);
686 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]);
687 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]);
688 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]);
689
690 add_wildcard(alias);
691 return 1;
692}
693
694static int do_vio_entry(const char *filename, void *symval,
695 char *alias)
696{
697 char *tmp;
698 DEF_FIELD_ADDR(symval, vio_device_id, type);
699 DEF_FIELD_ADDR(symval, vio_device_id, compat);
700
701 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
702 (*compat)[0] ? *compat : "*");
703
704 /* Replace all whitespace with underscores */
705 for (tmp = alias; tmp && *tmp; tmp++)
706 if (isspace (*tmp))
707 *tmp = '_';
708
709 add_wildcard(alias);
710 return 1;
711}
712
713#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
714
715static void do_input(char *alias,
716 kernel_ulong_t *arr, unsigned int min, unsigned int max)
717{
718 unsigned int i;
719
720 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++)
721 arr[i] = TO_NATIVE(arr[i]);
722 for (i = min; i < max; i++)
723 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
724 sprintf(alias + strlen(alias), "%X,*", i);
725}
726
727/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
728static int do_input_entry(const char *filename, void *symval,
729 char *alias)
730{
731 DEF_FIELD(symval, input_device_id, flags);
732 DEF_FIELD(symval, input_device_id, bustype);
733 DEF_FIELD(symval, input_device_id, vendor);
734 DEF_FIELD(symval, input_device_id, product);
735 DEF_FIELD(symval, input_device_id, version);
736 DEF_FIELD_ADDR(symval, input_device_id, evbit);
737 DEF_FIELD_ADDR(symval, input_device_id, keybit);
738 DEF_FIELD_ADDR(symval, input_device_id, relbit);
739 DEF_FIELD_ADDR(symval, input_device_id, absbit);
740 DEF_FIELD_ADDR(symval, input_device_id, mscbit);
741 DEF_FIELD_ADDR(symval, input_device_id, ledbit);
742 DEF_FIELD_ADDR(symval, input_device_id, sndbit);
743 DEF_FIELD_ADDR(symval, input_device_id, ffbit);
744 DEF_FIELD_ADDR(symval, input_device_id, swbit);
745
746 sprintf(alias, "input:");
747
748 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
749 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
750 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
751 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
752
753 sprintf(alias + strlen(alias), "-e*");
754 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
755 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
756 sprintf(alias + strlen(alias), "k*");
757 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
758 do_input(alias, *keybit,
759 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
760 INPUT_DEVICE_ID_KEY_MAX);
761 sprintf(alias + strlen(alias), "r*");
762 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
763 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
764 sprintf(alias + strlen(alias), "a*");
765 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
766 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
767 sprintf(alias + strlen(alias), "m*");
768 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
769 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
770 sprintf(alias + strlen(alias), "l*");
771 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
772 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
773 sprintf(alias + strlen(alias), "s*");
774 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
775 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
776 sprintf(alias + strlen(alias), "f*");
777 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
778 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
779 sprintf(alias + strlen(alias), "w*");
780 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
781 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
782 return 1;
783}
784
785static int do_eisa_entry(const char *filename, void *symval,
786 char *alias)
787{
788 DEF_FIELD_ADDR(symval, eisa_device_id, sig);
789 if (sig[0])
790 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig);
791 else
792 strcat(alias, "*");
793 return 1;
794}
795
796/* Looks like: parisc:tNhvNrevNsvN */
797static int do_parisc_entry(const char *filename, void *symval,
798 char *alias)
799{
800 DEF_FIELD(symval, parisc_device_id, hw_type);
801 DEF_FIELD(symval, parisc_device_id, hversion);
802 DEF_FIELD(symval, parisc_device_id, hversion_rev);
803 DEF_FIELD(symval, parisc_device_id, sversion);
804
805 strcpy(alias, "parisc:");
806 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
807 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
808 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
809 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
810
811 add_wildcard(alias);
812 return 1;
813}
814
815/* Looks like: sdio:cNvNdN. */
816static int do_sdio_entry(const char *filename,
817 void *symval, char *alias)
818{
819 DEF_FIELD(symval, sdio_device_id, class);
820 DEF_FIELD(symval, sdio_device_id, vendor);
821 DEF_FIELD(symval, sdio_device_id, device);
822
823 strcpy(alias, "sdio:");
824 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
825 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
826 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
827 add_wildcard(alias);
828 return 1;
829}
830
831/* Looks like: ssb:vNidNrevN. */
832static int do_ssb_entry(const char *filename,
833 void *symval, char *alias)
834{
835 DEF_FIELD(symval, ssb_device_id, vendor);
836 DEF_FIELD(symval, ssb_device_id, coreid);
837 DEF_FIELD(symval, ssb_device_id, revision);
838
839 strcpy(alias, "ssb:");
840 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
841 ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
842 ADD(alias, "rev", revision != SSB_ANY_REV, revision);
843 add_wildcard(alias);
844 return 1;
845}
846
847/* Looks like: bcma:mNidNrevNclN. */
848static int do_bcma_entry(const char *filename,
849 void *symval, char *alias)
850{
851 DEF_FIELD(symval, bcma_device_id, manuf);
852 DEF_FIELD(symval, bcma_device_id, id);
853 DEF_FIELD(symval, bcma_device_id, rev);
854 DEF_FIELD(symval, bcma_device_id, class);
855
856 strcpy(alias, "bcma:");
857 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
858 ADD(alias, "id", id != BCMA_ANY_ID, id);
859 ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
860 ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
861 add_wildcard(alias);
862 return 1;
863}
864
865/* Looks like: virtio:dNvN */
866static int do_virtio_entry(const char *filename, void *symval,
867 char *alias)
868{
869 DEF_FIELD(symval, virtio_device_id, device);
870 DEF_FIELD(symval, virtio_device_id, vendor);
871
872 strcpy(alias, "virtio:");
873 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
874 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
875
876 add_wildcard(alias);
877 return 1;
878}
879
880/*
881 * Looks like: vmbus:guid
882 * Each byte of the guid will be represented by two hex characters
883 * in the name.
884 */
885
886static int do_vmbus_entry(const char *filename, void *symval,
887 char *alias)
888{
889 int i;
890 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
891 char guid_name[(sizeof(*guid) + 1) * 2];
892
893 for (i = 0; i < (sizeof(*guid) * 2); i += 2)
894 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2]));
895
896 strcpy(alias, "vmbus:");
897 strcat(alias, guid_name);
898
899 return 1;
900}
901
902/* Looks like: rpmsg:S */
903static int do_rpmsg_entry(const char *filename, void *symval,
904 char *alias)
905{
906 DEF_FIELD_ADDR(symval, rpmsg_device_id, name);
907 sprintf(alias, RPMSG_DEVICE_MODALIAS_FMT, *name);
908
909 return 1;
910}
911
912/* Looks like: i2c:S */
913static int do_i2c_entry(const char *filename, void *symval,
914 char *alias)
915{
916 DEF_FIELD_ADDR(symval, i2c_device_id, name);
917 sprintf(alias, I2C_MODULE_PREFIX "%s", *name);
918
919 return 1;
920}
921
922static int do_i3c_entry(const char *filename, void *symval,
923 char *alias)
924{
925 DEF_FIELD(symval, i3c_device_id, match_flags);
926 DEF_FIELD(symval, i3c_device_id, dcr);
927 DEF_FIELD(symval, i3c_device_id, manuf_id);
928 DEF_FIELD(symval, i3c_device_id, part_id);
929 DEF_FIELD(symval, i3c_device_id, extra_info);
930
931 strcpy(alias, "i3c:");
932 ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr);
933 ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id);
934 ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id);
935 ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info);
936
937 return 1;
938}
939
940/* Looks like: spi:S */
941static int do_spi_entry(const char *filename, void *symval,
942 char *alias)
943{
944 DEF_FIELD_ADDR(symval, spi_device_id, name);
945 sprintf(alias, SPI_MODULE_PREFIX "%s", *name);
946
947 return 1;
948}
949
950static const struct dmifield {
951 const char *prefix;
952 int field;
953} dmi_fields[] = {
954 { "bvn", DMI_BIOS_VENDOR },
955 { "bvr", DMI_BIOS_VERSION },
956 { "bd", DMI_BIOS_DATE },
957 { "br", DMI_BIOS_RELEASE },
958 { "efr", DMI_EC_FIRMWARE_RELEASE },
959 { "svn", DMI_SYS_VENDOR },
960 { "pn", DMI_PRODUCT_NAME },
961 { "pvr", DMI_PRODUCT_VERSION },
962 { "rvn", DMI_BOARD_VENDOR },
963 { "rn", DMI_BOARD_NAME },
964 { "rvr", DMI_BOARD_VERSION },
965 { "cvn", DMI_CHASSIS_VENDOR },
966 { "ct", DMI_CHASSIS_TYPE },
967 { "cvr", DMI_CHASSIS_VERSION },
968 { NULL, DMI_NONE }
969};
970
971static void dmi_ascii_filter(char *d, const char *s)
972{
973 /* Filter out characters we don't want to see in the modalias string */
974 for (; *s; s++)
975 if (*s > ' ' && *s < 127 && *s != ':')
976 *(d++) = *s;
977
978 *d = 0;
979}
980
981
982static int do_dmi_entry(const char *filename, void *symval,
983 char *alias)
984{
985 int i, j;
986 DEF_FIELD_ADDR(symval, dmi_system_id, matches);
987 sprintf(alias, "dmi*");
988
989 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
990 for (j = 0; j < 4; j++) {
991 if ((*matches)[j].slot &&
992 (*matches)[j].slot == dmi_fields[i].field) {
993 sprintf(alias + strlen(alias), ":%s*",
994 dmi_fields[i].prefix);
995 dmi_ascii_filter(alias + strlen(alias),
996 (*matches)[j].substr);
997 strcat(alias, "*");
998 }
999 }
1000 }
1001
1002 strcat(alias, ":");
1003 return 1;
1004}
1005
1006static int do_platform_entry(const char *filename,
1007 void *symval, char *alias)
1008{
1009 DEF_FIELD_ADDR(symval, platform_device_id, name);
1010 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name);
1011 return 1;
1012}
1013
1014static int do_mdio_entry(const char *filename,
1015 void *symval, char *alias)
1016{
1017 int i;
1018 DEF_FIELD(symval, mdio_device_id, phy_id);
1019 DEF_FIELD(symval, mdio_device_id, phy_id_mask);
1020
1021 alias += sprintf(alias, MDIO_MODULE_PREFIX);
1022
1023 for (i = 0; i < 32; i++) {
1024 if (!((phy_id_mask >> (31-i)) & 1))
1025 *(alias++) = '?';
1026 else if ((phy_id >> (31-i)) & 1)
1027 *(alias++) = '1';
1028 else
1029 *(alias++) = '0';
1030 }
1031
1032 /* Terminate the string */
1033 *alias = 0;
1034
1035 return 1;
1036}
1037
1038/* Looks like: zorro:iN. */
1039static int do_zorro_entry(const char *filename, void *symval,
1040 char *alias)
1041{
1042 DEF_FIELD(symval, zorro_device_id, id);
1043 strcpy(alias, "zorro:");
1044 ADD(alias, "i", id != ZORRO_WILDCARD, id);
1045 return 1;
1046}
1047
1048/* looks like: "pnp:dD" */
1049static int do_isapnp_entry(const char *filename,
1050 void *symval, char *alias)
1051{
1052 DEF_FIELD(symval, isapnp_device_id, vendor);
1053 DEF_FIELD(symval, isapnp_device_id, function);
1054 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
1055 'A' + ((vendor >> 2) & 0x3f) - 1,
1056 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
1057 'A' + ((vendor >> 8) & 0x1f) - 1,
1058 (function >> 4) & 0x0f, function & 0x0f,
1059 (function >> 12) & 0x0f, (function >> 8) & 0x0f);
1060 return 1;
1061}
1062
1063/* Looks like: "ipack:fNvNdN". */
1064static int do_ipack_entry(const char *filename,
1065 void *symval, char *alias)
1066{
1067 DEF_FIELD(symval, ipack_device_id, format);
1068 DEF_FIELD(symval, ipack_device_id, vendor);
1069 DEF_FIELD(symval, ipack_device_id, device);
1070 strcpy(alias, "ipack:");
1071 ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
1072 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
1073 ADD(alias, "d", device != IPACK_ANY_ID, device);
1074 add_wildcard(alias);
1075 return 1;
1076}
1077
1078/*
1079 * Append a match expression for a single masked hex digit.
1080 * outp points to a pointer to the character at which to append.
1081 * *outp is updated on return to point just after the appended text,
1082 * to facilitate further appending.
1083 */
1084static void append_nibble_mask(char **outp,
1085 unsigned int nibble, unsigned int mask)
1086{
1087 char *p = *outp;
1088 unsigned int i;
1089
1090 switch (mask) {
1091 case 0:
1092 *p++ = '?';
1093 break;
1094
1095 case 0xf:
1096 p += sprintf(p, "%X", nibble);
1097 break;
1098
1099 default:
1100 /*
1101 * Dumbly emit a match pattern for all possible matching
1102 * digits. This could be improved in some cases using ranges,
1103 * but it has the advantage of being trivially correct, and is
1104 * often optimal.
1105 */
1106 *p++ = '[';
1107 for (i = 0; i < 0x10; i++)
1108 if ((i & mask) == nibble)
1109 p += sprintf(p, "%X", i);
1110 *p++ = ']';
1111 }
1112
1113 /* Ensure that the string remains NUL-terminated: */
1114 *p = '\0';
1115
1116 /* Advance the caller's end-of-string pointer: */
1117 *outp = p;
1118}
1119
1120/*
1121 * looks like: "amba:dN"
1122 *
1123 * N is exactly 8 digits, where each is an upper-case hex digit, or
1124 * a ? or [] pattern matching exactly one digit.
1125 */
1126static int do_amba_entry(const char *filename,
1127 void *symval, char *alias)
1128{
1129 unsigned int digit;
1130 char *p = alias;
1131 DEF_FIELD(symval, amba_id, id);
1132 DEF_FIELD(symval, amba_id, mask);
1133
1134 if ((id & mask) != id)
1135 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1136 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1137 filename, id, mask);
1138
1139 p += sprintf(alias, "amba:d");
1140 for (digit = 0; digit < 8; digit++)
1141 append_nibble_mask(&p,
1142 (id >> (4 * (7 - digit))) & 0xf,
1143 (mask >> (4 * (7 - digit))) & 0xf);
1144
1145 return 1;
1146}
1147
1148/*
1149 * looks like: "mipscdmm:tN"
1150 *
1151 * N is exactly 2 digits, where each is an upper-case hex digit, or
1152 * a ? or [] pattern matching exactly one digit.
1153 */
1154static int do_mips_cdmm_entry(const char *filename,
1155 void *symval, char *alias)
1156{
1157 DEF_FIELD(symval, mips_cdmm_device_id, type);
1158
1159 sprintf(alias, "mipscdmm:t%02X*", type);
1160 return 1;
1161}
1162
1163/* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
1164 * All fields are numbers. It would be nicer to use strings for vendor
1165 * and feature, but getting those out of the build system here is too
1166 * complicated.
1167 */
1168
1169static int do_x86cpu_entry(const char *filename, void *symval,
1170 char *alias)
1171{
1172 DEF_FIELD(symval, x86_cpu_id, feature);
1173 DEF_FIELD(symval, x86_cpu_id, family);
1174 DEF_FIELD(symval, x86_cpu_id, model);
1175 DEF_FIELD(symval, x86_cpu_id, vendor);
1176
1177 strcpy(alias, "cpu:type:x86,");
1178 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
1179 ADD(alias, "fam", family != X86_FAMILY_ANY, family);
1180 ADD(alias, "mod", model != X86_MODEL_ANY, model);
1181 strcat(alias, ":feature:*");
1182 if (feature != X86_FEATURE_ANY)
1183 sprintf(alias + strlen(alias), "%04X*", feature);
1184 return 1;
1185}
1186
1187/* LOOKS like cpu:type:*:feature:*FEAT* */
1188static int do_cpu_entry(const char *filename, void *symval, char *alias)
1189{
1190 DEF_FIELD(symval, cpu_feature, feature);
1191
1192 sprintf(alias, "cpu:type:*:feature:*%04X*", feature);
1193 return 1;
1194}
1195
1196/* Looks like: mei:S:uuid:N:* */
1197static int do_mei_entry(const char *filename, void *symval,
1198 char *alias)
1199{
1200 DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
1201 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid);
1202 DEF_FIELD(symval, mei_cl_device_id, version);
1203
1204 sprintf(alias, MEI_CL_MODULE_PREFIX);
1205 sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*");
1206 add_uuid(alias, *uuid);
1207 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version);
1208
1209 strcat(alias, ":*");
1210
1211 return 1;
1212}
1213
1214/* Looks like: rapidio:vNdNavNadN */
1215static int do_rio_entry(const char *filename,
1216 void *symval, char *alias)
1217{
1218 DEF_FIELD(symval, rio_device_id, did);
1219 DEF_FIELD(symval, rio_device_id, vid);
1220 DEF_FIELD(symval, rio_device_id, asm_did);
1221 DEF_FIELD(symval, rio_device_id, asm_vid);
1222
1223 strcpy(alias, "rapidio:");
1224 ADD(alias, "v", vid != RIO_ANY_ID, vid);
1225 ADD(alias, "d", did != RIO_ANY_ID, did);
1226 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
1227 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
1228
1229 add_wildcard(alias);
1230 return 1;
1231}
1232
1233/* Looks like: ulpi:vNpN */
1234static int do_ulpi_entry(const char *filename, void *symval,
1235 char *alias)
1236{
1237 DEF_FIELD(symval, ulpi_device_id, vendor);
1238 DEF_FIELD(symval, ulpi_device_id, product);
1239
1240 sprintf(alias, "ulpi:v%04xp%04x", vendor, product);
1241
1242 return 1;
1243}
1244
1245/* Looks like: hdaudio:vNrNaN */
1246static int do_hda_entry(const char *filename, void *symval, char *alias)
1247{
1248 DEF_FIELD(symval, hda_device_id, vendor_id);
1249 DEF_FIELD(symval, hda_device_id, rev_id);
1250 DEF_FIELD(symval, hda_device_id, api_version);
1251
1252 strcpy(alias, "hdaudio:");
1253 ADD(alias, "v", vendor_id != 0, vendor_id);
1254 ADD(alias, "r", rev_id != 0, rev_id);
1255 ADD(alias, "a", api_version != 0, api_version);
1256
1257 add_wildcard(alias);
1258 return 1;
1259}
1260
1261/* Looks like: sdw:mNpNvNcN */
1262static int do_sdw_entry(const char *filename, void *symval, char *alias)
1263{
1264 DEF_FIELD(symval, sdw_device_id, mfg_id);
1265 DEF_FIELD(symval, sdw_device_id, part_id);
1266 DEF_FIELD(symval, sdw_device_id, sdw_version);
1267 DEF_FIELD(symval, sdw_device_id, class_id);
1268
1269 strcpy(alias, "sdw:");
1270 ADD(alias, "m", mfg_id != 0, mfg_id);
1271 ADD(alias, "p", part_id != 0, part_id);
1272 ADD(alias, "v", sdw_version != 0, sdw_version);
1273 ADD(alias, "c", class_id != 0, class_id);
1274
1275 add_wildcard(alias);
1276 return 1;
1277}
1278
1279/* Looks like: fsl-mc:vNdN */
1280static int do_fsl_mc_entry(const char *filename, void *symval,
1281 char *alias)
1282{
1283 DEF_FIELD(symval, fsl_mc_device_id, vendor);
1284 DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type);
1285
1286 sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type);
1287 return 1;
1288}
1289
1290/* Looks like: tbsvc:kSpNvNrN */
1291static int do_tbsvc_entry(const char *filename, void *symval, char *alias)
1292{
1293 DEF_FIELD(symval, tb_service_id, match_flags);
1294 DEF_FIELD_ADDR(symval, tb_service_id, protocol_key);
1295 DEF_FIELD(symval, tb_service_id, protocol_id);
1296 DEF_FIELD(symval, tb_service_id, protocol_version);
1297 DEF_FIELD(symval, tb_service_id, protocol_revision);
1298
1299 strcpy(alias, "tbsvc:");
1300 if (match_flags & TBSVC_MATCH_PROTOCOL_KEY)
1301 sprintf(alias + strlen(alias), "k%s", *protocol_key);
1302 else
1303 strcat(alias + strlen(alias), "k*");
1304 ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id);
1305 ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION,
1306 protocol_version);
1307 ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION,
1308 protocol_revision);
1309
1310 add_wildcard(alias);
1311 return 1;
1312}
1313
1314/* Looks like: typec:idNmN */
1315static int do_typec_entry(const char *filename, void *symval, char *alias)
1316{
1317 DEF_FIELD(symval, typec_device_id, svid);
1318 DEF_FIELD(symval, typec_device_id, mode);
1319
1320 sprintf(alias, "typec:id%04X", svid);
1321 ADD(alias, "m", mode != TYPEC_ANY_MODE, mode);
1322
1323 return 1;
1324}
1325
1326/* Looks like: tee:uuid */
1327static int do_tee_entry(const char *filename, void *symval, char *alias)
1328{
1329 DEF_FIELD(symval, tee_client_device_id, uuid);
1330
1331 sprintf(alias, "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
1332 uuid.b[0], uuid.b[1], uuid.b[2], uuid.b[3], uuid.b[4],
1333 uuid.b[5], uuid.b[6], uuid.b[7], uuid.b[8], uuid.b[9],
1334 uuid.b[10], uuid.b[11], uuid.b[12], uuid.b[13], uuid.b[14],
1335 uuid.b[15]);
1336
1337 add_wildcard(alias);
1338 return 1;
1339}
1340
1341/* Looks like: wmi:guid */
1342static int do_wmi_entry(const char *filename, void *symval, char *alias)
1343{
1344 int len;
1345 DEF_FIELD_ADDR(symval, wmi_device_id, guid_string);
1346
1347 if (strlen(*guid_string) != UUID_STRING_LEN) {
1348 warn("Invalid WMI device id 'wmi:%s' in '%s'\n",
1349 *guid_string, filename);
1350 return 0;
1351 }
1352
1353 len = snprintf(alias, ALIAS_SIZE, WMI_MODULE_PREFIX "%s", *guid_string);
1354 if (len < 0 || len >= ALIAS_SIZE) {
1355 warn("Could not generate all MODULE_ALIAS's in '%s'\n",
1356 filename);
1357 return 0;
1358 }
1359 return 1;
1360}
1361
1362/* Looks like: mhi:S */
1363static int do_mhi_entry(const char *filename, void *symval, char *alias)
1364{
1365 DEF_FIELD_ADDR(symval, mhi_device_id, chan);
1366 sprintf(alias, MHI_DEVICE_MODALIAS_FMT, *chan);
1367
1368 return 1;
1369}
1370
1371/* Does namelen bytes of name exactly match the symbol? */
1372static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1373{
1374 if (namelen != strlen(symbol))
1375 return false;
1376
1377 return memcmp(name, symbol, namelen) == 0;
1378}
1379
1380static void do_table(void *symval, unsigned long size,
1381 unsigned long id_size,
1382 const char *device_id,
1383 int (*do_entry)(const char *filename, void *symval, char *alias),
1384 struct module *mod)
1385{
1386 unsigned int i;
1387 char alias[ALIAS_SIZE];
1388
1389 device_id_check(mod->name, device_id, size, id_size, symval);
1390 /* Leave last one: it's the terminator. */
1391 size -= id_size;
1392
1393 for (i = 0; i < size; i += id_size) {
1394 if (do_entry(mod->name, symval+i, alias)) {
1395 buf_printf(&mod->dev_table_buf,
1396 "MODULE_ALIAS(\"%s\");\n", alias);
1397 }
1398 }
1399}
1400
1401static const struct devtable devtable[] = {
1402 {"hid", SIZE_hid_device_id, do_hid_entry},
1403 {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry},
1404 {"pci", SIZE_pci_device_id, do_pci_entry},
1405 {"ccw", SIZE_ccw_device_id, do_ccw_entry},
1406 {"ap", SIZE_ap_device_id, do_ap_entry},
1407 {"css", SIZE_css_device_id, do_css_entry},
1408 {"serio", SIZE_serio_device_id, do_serio_entry},
1409 {"acpi", SIZE_acpi_device_id, do_acpi_entry},
1410 {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry},
1411 {"vio", SIZE_vio_device_id, do_vio_entry},
1412 {"input", SIZE_input_device_id, do_input_entry},
1413 {"eisa", SIZE_eisa_device_id, do_eisa_entry},
1414 {"parisc", SIZE_parisc_device_id, do_parisc_entry},
1415 {"sdio", SIZE_sdio_device_id, do_sdio_entry},
1416 {"ssb", SIZE_ssb_device_id, do_ssb_entry},
1417 {"bcma", SIZE_bcma_device_id, do_bcma_entry},
1418 {"virtio", SIZE_virtio_device_id, do_virtio_entry},
1419 {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry},
1420 {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry},
1421 {"i2c", SIZE_i2c_device_id, do_i2c_entry},
1422 {"i3c", SIZE_i3c_device_id, do_i3c_entry},
1423 {"spi", SIZE_spi_device_id, do_spi_entry},
1424 {"dmi", SIZE_dmi_system_id, do_dmi_entry},
1425 {"platform", SIZE_platform_device_id, do_platform_entry},
1426 {"mdio", SIZE_mdio_device_id, do_mdio_entry},
1427 {"zorro", SIZE_zorro_device_id, do_zorro_entry},
1428 {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry},
1429 {"ipack", SIZE_ipack_device_id, do_ipack_entry},
1430 {"amba", SIZE_amba_id, do_amba_entry},
1431 {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry},
1432 {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry},
1433 {"cpu", SIZE_cpu_feature, do_cpu_entry},
1434 {"mei", SIZE_mei_cl_device_id, do_mei_entry},
1435 {"rapidio", SIZE_rio_device_id, do_rio_entry},
1436 {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry},
1437 {"hdaudio", SIZE_hda_device_id, do_hda_entry},
1438 {"sdw", SIZE_sdw_device_id, do_sdw_entry},
1439 {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry},
1440 {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry},
1441 {"typec", SIZE_typec_device_id, do_typec_entry},
1442 {"tee", SIZE_tee_client_device_id, do_tee_entry},
1443 {"wmi", SIZE_wmi_device_id, do_wmi_entry},
1444 {"mhi", SIZE_mhi_device_id, do_mhi_entry},
1445};
1446
1447/* Create MODULE_ALIAS() statements.
1448 * At this time, we cannot write the actual output C source yet,
1449 * so we write into the mod->dev_table_buf buffer. */
1450void handle_moddevtable(struct module *mod, struct elf_info *info,
1451 Elf_Sym *sym, const char *symname)
1452{
1453 void *symval;
1454 char *zeros = NULL;
1455 const char *name, *identifier;
1456 unsigned int namelen;
1457
1458 /* We're looking for a section relative symbol */
1459 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1460 return;
1461
1462 /* We're looking for an object */
1463 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1464 return;
1465
1466 /* All our symbols are of form __mod_<name>__<identifier>_device_table. */
1467 if (strncmp(symname, "__mod_", strlen("__mod_")))
1468 return;
1469 name = symname + strlen("__mod_");
1470 namelen = strlen(name);
1471 if (namelen < strlen("_device_table"))
1472 return;
1473 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1474 return;
1475 identifier = strstr(name, "__");
1476 if (!identifier)
1477 return;
1478 namelen = identifier - name;
1479
1480 /* Handle all-NULL symbols allocated into .bss */
1481 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1482 zeros = calloc(1, sym->st_size);
1483 symval = zeros;
1484 } else {
1485 symval = (void *)info->hdr
1486 + info->sechdrs[get_secindex(info, sym)].sh_offset
1487 + sym->st_value;
1488 }
1489
1490 /* First handle the "special" cases */
1491 if (sym_is(name, namelen, "usb"))
1492 do_usb_table(symval, sym->st_size, mod);
1493 if (sym_is(name, namelen, "of"))
1494 do_of_table(symval, sym->st_size, mod);
1495 else if (sym_is(name, namelen, "pnp"))
1496 do_pnp_device_entry(symval, sym->st_size, mod);
1497 else if (sym_is(name, namelen, "pnp_card"))
1498 do_pnp_card_entries(symval, sym->st_size, mod);
1499 else {
1500 int i;
1501
1502 for (i = 0; i < ARRAY_SIZE(devtable); i++) {
1503 const struct devtable *p = &devtable[i];
1504
1505 if (sym_is(name, namelen, p->device_id)) {
1506 do_table(symval, sym->st_size, p->id_size,
1507 p->device_id, p->do_entry, mod);
1508 break;
1509 }
1510 }
1511 }
1512 free(zeros);
1513}
1514
1515/* Now add out buffered information to the generated C source */
1516void add_moddevtable(struct buffer *buf, struct module *mod)
1517{
1518 buf_printf(buf, "\n");
1519 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1520 free(mod->dev_table_buf.p);
1521}
1/* Simple code to turn various tables in an ELF file into alias definitions.
2 * This deals with kernel datastructures where they should be
3 * dealt with: in the kernel source.
4 *
5 * Copyright 2002-2003 Rusty Russell, IBM Corporation
6 * 2003 Kai Germaschewski
7 *
8 *
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
11 */
12
13#include "modpost.h"
14#include "devicetable-offsets.h"
15
16/* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
17 * use either stdint.h or inttypes.h for the rest. */
18#if KERNEL_ELFCLASS == ELFCLASS32
19typedef Elf32_Addr kernel_ulong_t;
20#define BITS_PER_LONG 32
21#else
22typedef Elf64_Addr kernel_ulong_t;
23#define BITS_PER_LONG 64
24#endif
25#ifdef __sun__
26#include <inttypes.h>
27#else
28#include <stdint.h>
29#endif
30
31#include <ctype.h>
32#include <stdbool.h>
33
34typedef uint32_t __u32;
35typedef uint16_t __u16;
36typedef unsigned char __u8;
37
38/* Big exception to the "don't include kernel headers into userspace, which
39 * even potentially has different endianness and word sizes, since
40 * we handle those differences explicitly below */
41#include "../../include/linux/mod_devicetable.h"
42
43/* This array collects all instances that use the generic do_table */
44struct devtable {
45 const char *device_id; /* name of table, __mod_<name>__*_device_table. */
46 unsigned long id_size;
47 void *function;
48};
49
50#define ___cat(a,b) a ## b
51#define __cat(a,b) ___cat(a,b)
52
53/* we need some special handling for this host tool running eventually on
54 * Darwin. The Mach-O section handling is a bit different than ELF section
55 * handling. The differnces in detail are:
56 * a) we have segments which have sections
57 * b) we need a API call to get the respective section symbols */
58#if defined(__MACH__)
59#include <mach-o/getsect.h>
60
61#define INIT_SECTION(name) do { \
62 unsigned long name ## _len; \
63 char *__cat(pstart_,name) = getsectdata("__TEXT", \
64 #name, &__cat(name,_len)); \
65 char *__cat(pstop_,name) = __cat(pstart_,name) + \
66 __cat(name, _len); \
67 __cat(__start_,name) = (void *)__cat(pstart_,name); \
68 __cat(__stop_,name) = (void *)__cat(pstop_,name); \
69 } while (0)
70#define SECTION(name) __attribute__((section("__TEXT, " #name)))
71
72struct devtable **__start___devtable, **__stop___devtable;
73#else
74#define INIT_SECTION(name) /* no-op for ELF */
75#define SECTION(name) __attribute__((section(#name)))
76
77/* We construct a table of pointers in an ELF section (pointers generally
78 * go unpadded by gcc). ld creates boundary syms for us. */
79extern struct devtable *__start___devtable[], *__stop___devtable[];
80#endif /* __MACH__ */
81
82#if !defined(__used)
83# if __GNUC__ == 3 && __GNUC_MINOR__ < 3
84# define __used __attribute__((__unused__))
85# else
86# define __used __attribute__((__used__))
87# endif
88#endif
89
90/* Define a variable f that holds the value of field f of struct devid
91 * based at address m.
92 */
93#define DEF_FIELD(m, devid, f) \
94 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f))
95/* Define a variable f that holds the address of field f of struct devid
96 * based at address m. Due to the way typeof works, for a field of type
97 * T[N] the variable has type T(*)[N], _not_ T*.
98 */
99#define DEF_FIELD_ADDR(m, devid, f) \
100 typeof(((struct devid *)0)->f) *f = ((m) + OFF_##devid##_##f)
101
102/* Add a table entry. We test function type matches while we're here. */
103#define ADD_TO_DEVTABLE(device_id, type, function) \
104 static struct devtable __cat(devtable,__LINE__) = { \
105 device_id + 0*sizeof((function)((const char *)NULL, \
106 (void *)NULL, \
107 (char *)NULL)), \
108 SIZE_##type, (function) }; \
109 static struct devtable *SECTION(__devtable) __used \
110 __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__)
111
112#define ADD(str, sep, cond, field) \
113do { \
114 strcat(str, sep); \
115 if (cond) \
116 sprintf(str + strlen(str), \
117 sizeof(field) == 1 ? "%02X" : \
118 sizeof(field) == 2 ? "%04X" : \
119 sizeof(field) == 4 ? "%08X" : "", \
120 field); \
121 else \
122 sprintf(str + strlen(str), "*"); \
123} while(0)
124
125/* Always end in a wildcard, for future extension */
126static inline void add_wildcard(char *str)
127{
128 int len = strlen(str);
129
130 if (str[len - 1] != '*')
131 strcat(str + len, "*");
132}
133
134/**
135 * Check that sizeof(device_id type) are consistent with size of section
136 * in .o file. If in-consistent then userspace and kernel does not agree
137 * on actual size which is a bug.
138 * Also verify that the final entry in the table is all zeros.
139 * Ignore both checks if build host differ from target host and size differs.
140 **/
141static void device_id_check(const char *modname, const char *device_id,
142 unsigned long size, unsigned long id_size,
143 void *symval)
144{
145 int i;
146
147 if (size % id_size || size < id_size) {
148 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
149 "of the size of "
150 "section __mod_%s__<identifier>_device_table=%lu.\n"
151 "Fix definition of struct %s_device_id "
152 "in mod_devicetable.h\n",
153 modname, device_id, id_size, device_id, size, device_id);
154 }
155 /* Verify last one is a terminator */
156 for (i = 0; i < id_size; i++ ) {
157 if (*(uint8_t*)(symval+size-id_size+i)) {
158 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
159 "The last of %lu is:\n",
160 modname, device_id, id_size, size / id_size);
161 for (i = 0; i < id_size; i++ )
162 fprintf(stderr,"0x%02x ",
163 *(uint8_t*)(symval+size-id_size+i) );
164 fprintf(stderr,"\n");
165 fatal("%s: struct %s_device_id is not terminated "
166 "with a NULL entry!\n", modname, device_id);
167 }
168 }
169}
170
171/* USB is special because the bcdDevice can be matched against a numeric range */
172/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
173static void do_usb_entry(void *symval,
174 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
175 unsigned char range_lo, unsigned char range_hi,
176 unsigned char max, struct module *mod)
177{
178 char alias[500];
179 DEF_FIELD(symval, usb_device_id, match_flags);
180 DEF_FIELD(symval, usb_device_id, idVendor);
181 DEF_FIELD(symval, usb_device_id, idProduct);
182 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
183 DEF_FIELD(symval, usb_device_id, bDeviceClass);
184 DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
185 DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
186 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
187 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
188 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
189 DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
190
191 strcpy(alias, "usb:");
192 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
193 idVendor);
194 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
195 idProduct);
196
197 strcat(alias, "d");
198 if (bcdDevice_initial_digits)
199 sprintf(alias + strlen(alias), "%0*X",
200 bcdDevice_initial_digits, bcdDevice_initial);
201 if (range_lo == range_hi)
202 sprintf(alias + strlen(alias), "%X", range_lo);
203 else if (range_lo > 0 || range_hi < max) {
204 if (range_lo > 0x9 || range_hi < 0xA)
205 sprintf(alias + strlen(alias),
206 "[%X-%X]",
207 range_lo,
208 range_hi);
209 else {
210 sprintf(alias + strlen(alias),
211 range_lo < 0x9 ? "[%X-9" : "[%X",
212 range_lo);
213 sprintf(alias + strlen(alias),
214 range_hi > 0xA ? "A-%X]" : "%X]",
215 range_hi);
216 }
217 }
218 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
219 strcat(alias, "*");
220
221 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
222 bDeviceClass);
223 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
224 bDeviceSubClass);
225 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
226 bDeviceProtocol);
227 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
228 bInterfaceClass);
229 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
230 bInterfaceSubClass);
231 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
232 bInterfaceProtocol);
233 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
234 bInterfaceNumber);
235
236 add_wildcard(alias);
237 buf_printf(&mod->dev_table_buf,
238 "MODULE_ALIAS(\"%s\");\n", alias);
239}
240
241/* Handles increment/decrement of BCD formatted integers */
242/* Returns the previous value, so it works like i++ or i-- */
243static unsigned int incbcd(unsigned int *bcd,
244 int inc,
245 unsigned char max,
246 size_t chars)
247{
248 unsigned int init = *bcd, i, j;
249 unsigned long long c, dec = 0;
250
251 /* If bcd is not in BCD format, just increment */
252 if (max > 0x9) {
253 *bcd += inc;
254 return init;
255 }
256
257 /* Convert BCD to Decimal */
258 for (i=0 ; i < chars ; i++) {
259 c = (*bcd >> (i << 2)) & 0xf;
260 c = c > 9 ? 9 : c; /* force to bcd just in case */
261 for (j=0 ; j < i ; j++)
262 c = c * 10;
263 dec += c;
264 }
265
266 /* Do our increment/decrement */
267 dec += inc;
268 *bcd = 0;
269
270 /* Convert back to BCD */
271 for (i=0 ; i < chars ; i++) {
272 for (c=1,j=0 ; j < i ; j++)
273 c = c * 10;
274 c = (dec / c) % 10;
275 *bcd += c << (i << 2);
276 }
277 return init;
278}
279
280static void do_usb_entry_multi(void *symval, struct module *mod)
281{
282 unsigned int devlo, devhi;
283 unsigned char chi, clo, max;
284 int ndigits;
285
286 DEF_FIELD(symval, usb_device_id, match_flags);
287 DEF_FIELD(symval, usb_device_id, idVendor);
288 DEF_FIELD(symval, usb_device_id, idProduct);
289 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
290 DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
291 DEF_FIELD(symval, usb_device_id, bDeviceClass);
292 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
293
294 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
295 bcdDevice_lo : 0x0U;
296 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
297 bcdDevice_hi : ~0x0U;
298
299 /* Figure out if this entry is in bcd or hex format */
300 max = 0x9; /* Default to decimal format */
301 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
302 clo = (devlo >> (ndigits << 2)) & 0xf;
303 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
304 if (clo > max || chi > max) {
305 max = 0xf;
306 break;
307 }
308 }
309
310 /*
311 * Some modules (visor) have empty slots as placeholder for
312 * run-time specification that results in catch-all alias
313 */
314 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
315 return;
316
317 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
318 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
319 clo = devlo & 0xf;
320 chi = devhi & 0xf;
321 if (chi > max) /* If we are in bcd mode, truncate if necessary */
322 chi = max;
323 devlo >>= 4;
324 devhi >>= 4;
325
326 if (devlo == devhi || !ndigits) {
327 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
328 break;
329 }
330
331 if (clo > 0x0)
332 do_usb_entry(symval,
333 incbcd(&devlo, 1, max,
334 sizeof(bcdDevice_lo) * 2),
335 ndigits, clo, max, max, mod);
336
337 if (chi < max)
338 do_usb_entry(symval,
339 incbcd(&devhi, -1, max,
340 sizeof(bcdDevice_lo) * 2),
341 ndigits, 0x0, chi, max, mod);
342 }
343}
344
345static void do_usb_table(void *symval, unsigned long size,
346 struct module *mod)
347{
348 unsigned int i;
349 const unsigned long id_size = SIZE_usb_device_id;
350
351 device_id_check(mod->name, "usb", size, id_size, symval);
352
353 /* Leave last one: it's the terminator. */
354 size -= id_size;
355
356 for (i = 0; i < size; i += id_size)
357 do_usb_entry_multi(symval + i, mod);
358}
359
360/* Looks like: hid:bNvNpN */
361static int do_hid_entry(const char *filename,
362 void *symval, char *alias)
363{
364 DEF_FIELD(symval, hid_device_id, bus);
365 DEF_FIELD(symval, hid_device_id, group);
366 DEF_FIELD(symval, hid_device_id, vendor);
367 DEF_FIELD(symval, hid_device_id, product);
368
369 sprintf(alias, "hid:");
370 ADD(alias, "b", bus != HID_BUS_ANY, bus);
371 ADD(alias, "g", group != HID_GROUP_ANY, group);
372 ADD(alias, "v", vendor != HID_ANY_ID, vendor);
373 ADD(alias, "p", product != HID_ANY_ID, product);
374
375 return 1;
376}
377ADD_TO_DEVTABLE("hid", hid_device_id, do_hid_entry);
378
379/* Looks like: ieee1394:venNmoNspNverN */
380static int do_ieee1394_entry(const char *filename,
381 void *symval, char *alias)
382{
383 DEF_FIELD(symval, ieee1394_device_id, match_flags);
384 DEF_FIELD(symval, ieee1394_device_id, vendor_id);
385 DEF_FIELD(symval, ieee1394_device_id, model_id);
386 DEF_FIELD(symval, ieee1394_device_id, specifier_id);
387 DEF_FIELD(symval, ieee1394_device_id, version);
388
389 strcpy(alias, "ieee1394:");
390 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
391 vendor_id);
392 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
393 model_id);
394 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
395 specifier_id);
396 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
397 version);
398
399 add_wildcard(alias);
400 return 1;
401}
402ADD_TO_DEVTABLE("ieee1394", ieee1394_device_id, do_ieee1394_entry);
403
404/* Looks like: pci:vNdNsvNsdNbcNscNiN. */
405static int do_pci_entry(const char *filename,
406 void *symval, char *alias)
407{
408 /* Class field can be divided into these three. */
409 unsigned char baseclass, subclass, interface,
410 baseclass_mask, subclass_mask, interface_mask;
411
412 DEF_FIELD(symval, pci_device_id, vendor);
413 DEF_FIELD(symval, pci_device_id, device);
414 DEF_FIELD(symval, pci_device_id, subvendor);
415 DEF_FIELD(symval, pci_device_id, subdevice);
416 DEF_FIELD(symval, pci_device_id, class);
417 DEF_FIELD(symval, pci_device_id, class_mask);
418
419 strcpy(alias, "pci:");
420 ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
421 ADD(alias, "d", device != PCI_ANY_ID, device);
422 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
423 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
424
425 baseclass = (class) >> 16;
426 baseclass_mask = (class_mask) >> 16;
427 subclass = (class) >> 8;
428 subclass_mask = (class_mask) >> 8;
429 interface = class;
430 interface_mask = class_mask;
431
432 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
433 || (subclass_mask != 0 && subclass_mask != 0xFF)
434 || (interface_mask != 0 && interface_mask != 0xFF)) {
435 warn("Can't handle masks in %s:%04X\n",
436 filename, class_mask);
437 return 0;
438 }
439
440 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
441 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
442 ADD(alias, "i", interface_mask == 0xFF, interface);
443 add_wildcard(alias);
444 return 1;
445}
446ADD_TO_DEVTABLE("pci", pci_device_id, do_pci_entry);
447
448/* looks like: "ccw:tNmNdtNdmN" */
449static int do_ccw_entry(const char *filename,
450 void *symval, char *alias)
451{
452 DEF_FIELD(symval, ccw_device_id, match_flags);
453 DEF_FIELD(symval, ccw_device_id, cu_type);
454 DEF_FIELD(symval, ccw_device_id, cu_model);
455 DEF_FIELD(symval, ccw_device_id, dev_type);
456 DEF_FIELD(symval, ccw_device_id, dev_model);
457
458 strcpy(alias, "ccw:");
459 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
460 cu_type);
461 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
462 cu_model);
463 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
464 dev_type);
465 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
466 dev_model);
467 add_wildcard(alias);
468 return 1;
469}
470ADD_TO_DEVTABLE("ccw", ccw_device_id, do_ccw_entry);
471
472/* looks like: "ap:tN" */
473static int do_ap_entry(const char *filename,
474 void *symval, char *alias)
475{
476 DEF_FIELD(symval, ap_device_id, dev_type);
477
478 sprintf(alias, "ap:t%02X*", dev_type);
479 return 1;
480}
481ADD_TO_DEVTABLE("ap", ap_device_id, do_ap_entry);
482
483/* looks like: "css:tN" */
484static int do_css_entry(const char *filename,
485 void *symval, char *alias)
486{
487 DEF_FIELD(symval, css_device_id, type);
488
489 sprintf(alias, "css:t%01X", type);
490 return 1;
491}
492ADD_TO_DEVTABLE("css", css_device_id, do_css_entry);
493
494/* Looks like: "serio:tyNprNidNexN" */
495static int do_serio_entry(const char *filename,
496 void *symval, char *alias)
497{
498 DEF_FIELD(symval, serio_device_id, type);
499 DEF_FIELD(symval, serio_device_id, proto);
500 DEF_FIELD(symval, serio_device_id, id);
501 DEF_FIELD(symval, serio_device_id, extra);
502
503 strcpy(alias, "serio:");
504 ADD(alias, "ty", type != SERIO_ANY, type);
505 ADD(alias, "pr", proto != SERIO_ANY, proto);
506 ADD(alias, "id", id != SERIO_ANY, id);
507 ADD(alias, "ex", extra != SERIO_ANY, extra);
508
509 add_wildcard(alias);
510 return 1;
511}
512ADD_TO_DEVTABLE("serio", serio_device_id, do_serio_entry);
513
514/* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
515static int do_acpi_entry(const char *filename,
516 void *symval, char *alias)
517{
518 DEF_FIELD_ADDR(symval, acpi_device_id, id);
519 sprintf(alias, "acpi*:%s:*", *id);
520 return 1;
521}
522ADD_TO_DEVTABLE("acpi", acpi_device_id, do_acpi_entry);
523
524/* looks like: "pnp:dD" */
525static void do_pnp_device_entry(void *symval, unsigned long size,
526 struct module *mod)
527{
528 const unsigned long id_size = SIZE_pnp_device_id;
529 const unsigned int count = (size / id_size)-1;
530 unsigned int i;
531
532 device_id_check(mod->name, "pnp", size, id_size, symval);
533
534 for (i = 0; i < count; i++) {
535 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id);
536 char acpi_id[sizeof(*id)];
537 int j;
538
539 buf_printf(&mod->dev_table_buf,
540 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
541
542 /* fix broken pnp bus lowercasing */
543 for (j = 0; j < sizeof(acpi_id); j++)
544 acpi_id[j] = toupper((*id)[j]);
545 buf_printf(&mod->dev_table_buf,
546 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
547 }
548}
549
550/* looks like: "pnp:dD" for every device of the card */
551static void do_pnp_card_entries(void *symval, unsigned long size,
552 struct module *mod)
553{
554 const unsigned long id_size = SIZE_pnp_card_device_id;
555 const unsigned int count = (size / id_size)-1;
556 unsigned int i;
557
558 device_id_check(mod->name, "pnp", size, id_size, symval);
559
560 for (i = 0; i < count; i++) {
561 unsigned int j;
562 DEF_FIELD_ADDR(symval + i*id_size, pnp_card_device_id, devs);
563
564 for (j = 0; j < PNP_MAX_DEVICES; j++) {
565 const char *id = (char *)(*devs)[j].id;
566 int i2, j2;
567 int dup = 0;
568
569 if (!id[0])
570 break;
571
572 /* find duplicate, already added value */
573 for (i2 = 0; i2 < i && !dup; i2++) {
574 DEF_FIELD_ADDR(symval + i2*id_size, pnp_card_device_id, devs);
575
576 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
577 const char *id2 = (char *)(*devs)[j2].id;
578
579 if (!id2[0])
580 break;
581
582 if (!strcmp(id, id2)) {
583 dup = 1;
584 break;
585 }
586 }
587 }
588
589 /* add an individual alias for every device entry */
590 if (!dup) {
591 char acpi_id[PNP_ID_LEN];
592 int k;
593
594 buf_printf(&mod->dev_table_buf,
595 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
596
597 /* fix broken pnp bus lowercasing */
598 for (k = 0; k < sizeof(acpi_id); k++)
599 acpi_id[k] = toupper(id[k]);
600 buf_printf(&mod->dev_table_buf,
601 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
602 }
603 }
604 }
605}
606
607/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
608static int do_pcmcia_entry(const char *filename,
609 void *symval, char *alias)
610{
611 unsigned int i;
612 DEF_FIELD(symval, pcmcia_device_id, match_flags);
613 DEF_FIELD(symval, pcmcia_device_id, manf_id);
614 DEF_FIELD(symval, pcmcia_device_id, card_id);
615 DEF_FIELD(symval, pcmcia_device_id, func_id);
616 DEF_FIELD(symval, pcmcia_device_id, function);
617 DEF_FIELD(symval, pcmcia_device_id, device_no);
618 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
619
620 for (i=0; i<4; i++) {
621 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]);
622 }
623
624 strcpy(alias, "pcmcia:");
625 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
626 manf_id);
627 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
628 card_id);
629 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
630 func_id);
631 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
632 function);
633 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
634 device_no);
635 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]);
636 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]);
637 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]);
638 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]);
639
640 add_wildcard(alias);
641 return 1;
642}
643ADD_TO_DEVTABLE("pcmcia", pcmcia_device_id, do_pcmcia_entry);
644
645static int do_of_entry (const char *filename, void *symval, char *alias)
646{
647 int len;
648 char *tmp;
649 DEF_FIELD_ADDR(symval, of_device_id, name);
650 DEF_FIELD_ADDR(symval, of_device_id, type);
651 DEF_FIELD_ADDR(symval, of_device_id, compatible);
652
653 len = sprintf (alias, "of:N%sT%s",
654 (*name)[0] ? *name : "*",
655 (*type)[0] ? *type : "*");
656
657 if (compatible[0])
658 sprintf (&alias[len], "%sC%s",
659 (*type)[0] ? "*" : "",
660 *compatible);
661
662 /* Replace all whitespace with underscores */
663 for (tmp = alias; tmp && *tmp; tmp++)
664 if (isspace (*tmp))
665 *tmp = '_';
666
667 add_wildcard(alias);
668 return 1;
669}
670ADD_TO_DEVTABLE("of", of_device_id, do_of_entry);
671
672static int do_vio_entry(const char *filename, void *symval,
673 char *alias)
674{
675 char *tmp;
676 DEF_FIELD_ADDR(symval, vio_device_id, type);
677 DEF_FIELD_ADDR(symval, vio_device_id, compat);
678
679 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
680 (*compat)[0] ? *compat : "*");
681
682 /* Replace all whitespace with underscores */
683 for (tmp = alias; tmp && *tmp; tmp++)
684 if (isspace (*tmp))
685 *tmp = '_';
686
687 add_wildcard(alias);
688 return 1;
689}
690ADD_TO_DEVTABLE("vio", vio_device_id, do_vio_entry);
691
692#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
693
694static void do_input(char *alias,
695 kernel_ulong_t *arr, unsigned int min, unsigned int max)
696{
697 unsigned int i;
698
699 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++)
700 arr[i] = TO_NATIVE(arr[i]);
701 for (i = min; i < max; i++)
702 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
703 sprintf(alias + strlen(alias), "%X,*", i);
704}
705
706/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
707static int do_input_entry(const char *filename, void *symval,
708 char *alias)
709{
710 DEF_FIELD(symval, input_device_id, flags);
711 DEF_FIELD(symval, input_device_id, bustype);
712 DEF_FIELD(symval, input_device_id, vendor);
713 DEF_FIELD(symval, input_device_id, product);
714 DEF_FIELD(symval, input_device_id, version);
715 DEF_FIELD_ADDR(symval, input_device_id, evbit);
716 DEF_FIELD_ADDR(symval, input_device_id, keybit);
717 DEF_FIELD_ADDR(symval, input_device_id, relbit);
718 DEF_FIELD_ADDR(symval, input_device_id, absbit);
719 DEF_FIELD_ADDR(symval, input_device_id, mscbit);
720 DEF_FIELD_ADDR(symval, input_device_id, ledbit);
721 DEF_FIELD_ADDR(symval, input_device_id, sndbit);
722 DEF_FIELD_ADDR(symval, input_device_id, ffbit);
723 DEF_FIELD_ADDR(symval, input_device_id, swbit);
724
725 sprintf(alias, "input:");
726
727 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
728 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
729 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
730 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
731
732 sprintf(alias + strlen(alias), "-e*");
733 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
734 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
735 sprintf(alias + strlen(alias), "k*");
736 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
737 do_input(alias, *keybit,
738 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
739 INPUT_DEVICE_ID_KEY_MAX);
740 sprintf(alias + strlen(alias), "r*");
741 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
742 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
743 sprintf(alias + strlen(alias), "a*");
744 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
745 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
746 sprintf(alias + strlen(alias), "m*");
747 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
748 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
749 sprintf(alias + strlen(alias), "l*");
750 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
751 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
752 sprintf(alias + strlen(alias), "s*");
753 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
754 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
755 sprintf(alias + strlen(alias), "f*");
756 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
757 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
758 sprintf(alias + strlen(alias), "w*");
759 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
760 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
761 return 1;
762}
763ADD_TO_DEVTABLE("input", input_device_id, do_input_entry);
764
765static int do_eisa_entry(const char *filename, void *symval,
766 char *alias)
767{
768 DEF_FIELD_ADDR(symval, eisa_device_id, sig);
769 if (sig[0])
770 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig);
771 else
772 strcat(alias, "*");
773 return 1;
774}
775ADD_TO_DEVTABLE("eisa", eisa_device_id, do_eisa_entry);
776
777/* Looks like: parisc:tNhvNrevNsvN */
778static int do_parisc_entry(const char *filename, void *symval,
779 char *alias)
780{
781 DEF_FIELD(symval, parisc_device_id, hw_type);
782 DEF_FIELD(symval, parisc_device_id, hversion);
783 DEF_FIELD(symval, parisc_device_id, hversion_rev);
784 DEF_FIELD(symval, parisc_device_id, sversion);
785
786 strcpy(alias, "parisc:");
787 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
788 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
789 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
790 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
791
792 add_wildcard(alias);
793 return 1;
794}
795ADD_TO_DEVTABLE("parisc", parisc_device_id, do_parisc_entry);
796
797/* Looks like: sdio:cNvNdN. */
798static int do_sdio_entry(const char *filename,
799 void *symval, char *alias)
800{
801 DEF_FIELD(symval, sdio_device_id, class);
802 DEF_FIELD(symval, sdio_device_id, vendor);
803 DEF_FIELD(symval, sdio_device_id, device);
804
805 strcpy(alias, "sdio:");
806 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
807 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
808 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
809 add_wildcard(alias);
810 return 1;
811}
812ADD_TO_DEVTABLE("sdio", sdio_device_id, do_sdio_entry);
813
814/* Looks like: ssb:vNidNrevN. */
815static int do_ssb_entry(const char *filename,
816 void *symval, char *alias)
817{
818 DEF_FIELD(symval, ssb_device_id, vendor);
819 DEF_FIELD(symval, ssb_device_id, coreid);
820 DEF_FIELD(symval, ssb_device_id, revision);
821
822 strcpy(alias, "ssb:");
823 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
824 ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
825 ADD(alias, "rev", revision != SSB_ANY_REV, revision);
826 add_wildcard(alias);
827 return 1;
828}
829ADD_TO_DEVTABLE("ssb", ssb_device_id, do_ssb_entry);
830
831/* Looks like: bcma:mNidNrevNclN. */
832static int do_bcma_entry(const char *filename,
833 void *symval, char *alias)
834{
835 DEF_FIELD(symval, bcma_device_id, manuf);
836 DEF_FIELD(symval, bcma_device_id, id);
837 DEF_FIELD(symval, bcma_device_id, rev);
838 DEF_FIELD(symval, bcma_device_id, class);
839
840 strcpy(alias, "bcma:");
841 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
842 ADD(alias, "id", id != BCMA_ANY_ID, id);
843 ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
844 ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
845 add_wildcard(alias);
846 return 1;
847}
848ADD_TO_DEVTABLE("bcma", bcma_device_id, do_bcma_entry);
849
850/* Looks like: virtio:dNvN */
851static int do_virtio_entry(const char *filename, void *symval,
852 char *alias)
853{
854 DEF_FIELD(symval, virtio_device_id, device);
855 DEF_FIELD(symval, virtio_device_id, vendor);
856
857 strcpy(alias, "virtio:");
858 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
859 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
860
861 add_wildcard(alias);
862 return 1;
863}
864ADD_TO_DEVTABLE("virtio", virtio_device_id, do_virtio_entry);
865
866/*
867 * Looks like: vmbus:guid
868 * Each byte of the guid will be represented by two hex characters
869 * in the name.
870 */
871
872static int do_vmbus_entry(const char *filename, void *symval,
873 char *alias)
874{
875 int i;
876 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
877 char guid_name[(sizeof(*guid) + 1) * 2];
878
879 for (i = 0; i < (sizeof(*guid) * 2); i += 2)
880 sprintf(&guid_name[i], "%02x", TO_NATIVE((*guid)[i/2]));
881
882 strcpy(alias, "vmbus:");
883 strcat(alias, guid_name);
884
885 return 1;
886}
887ADD_TO_DEVTABLE("vmbus", hv_vmbus_device_id, do_vmbus_entry);
888
889/* Looks like: i2c:S */
890static int do_i2c_entry(const char *filename, void *symval,
891 char *alias)
892{
893 DEF_FIELD_ADDR(symval, i2c_device_id, name);
894 sprintf(alias, I2C_MODULE_PREFIX "%s", *name);
895
896 return 1;
897}
898ADD_TO_DEVTABLE("i2c", i2c_device_id, do_i2c_entry);
899
900/* Looks like: spi:S */
901static int do_spi_entry(const char *filename, void *symval,
902 char *alias)
903{
904 DEF_FIELD_ADDR(symval, spi_device_id, name);
905 sprintf(alias, SPI_MODULE_PREFIX "%s", *name);
906
907 return 1;
908}
909ADD_TO_DEVTABLE("spi", spi_device_id, do_spi_entry);
910
911static const struct dmifield {
912 const char *prefix;
913 int field;
914} dmi_fields[] = {
915 { "bvn", DMI_BIOS_VENDOR },
916 { "bvr", DMI_BIOS_VERSION },
917 { "bd", DMI_BIOS_DATE },
918 { "svn", DMI_SYS_VENDOR },
919 { "pn", DMI_PRODUCT_NAME },
920 { "pvr", DMI_PRODUCT_VERSION },
921 { "rvn", DMI_BOARD_VENDOR },
922 { "rn", DMI_BOARD_NAME },
923 { "rvr", DMI_BOARD_VERSION },
924 { "cvn", DMI_CHASSIS_VENDOR },
925 { "ct", DMI_CHASSIS_TYPE },
926 { "cvr", DMI_CHASSIS_VERSION },
927 { NULL, DMI_NONE }
928};
929
930static void dmi_ascii_filter(char *d, const char *s)
931{
932 /* Filter out characters we don't want to see in the modalias string */
933 for (; *s; s++)
934 if (*s > ' ' && *s < 127 && *s != ':')
935 *(d++) = *s;
936
937 *d = 0;
938}
939
940
941static int do_dmi_entry(const char *filename, void *symval,
942 char *alias)
943{
944 int i, j;
945 DEF_FIELD_ADDR(symval, dmi_system_id, matches);
946 sprintf(alias, "dmi*");
947
948 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
949 for (j = 0; j < 4; j++) {
950 if ((*matches)[j].slot &&
951 (*matches)[j].slot == dmi_fields[i].field) {
952 sprintf(alias + strlen(alias), ":%s*",
953 dmi_fields[i].prefix);
954 dmi_ascii_filter(alias + strlen(alias),
955 (*matches)[j].substr);
956 strcat(alias, "*");
957 }
958 }
959 }
960
961 strcat(alias, ":");
962 return 1;
963}
964ADD_TO_DEVTABLE("dmi", dmi_system_id, do_dmi_entry);
965
966static int do_platform_entry(const char *filename,
967 void *symval, char *alias)
968{
969 DEF_FIELD_ADDR(symval, platform_device_id, name);
970 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name);
971 return 1;
972}
973ADD_TO_DEVTABLE("platform", platform_device_id, do_platform_entry);
974
975static int do_mdio_entry(const char *filename,
976 void *symval, char *alias)
977{
978 int i;
979 DEF_FIELD(symval, mdio_device_id, phy_id);
980 DEF_FIELD(symval, mdio_device_id, phy_id_mask);
981
982 alias += sprintf(alias, MDIO_MODULE_PREFIX);
983
984 for (i = 0; i < 32; i++) {
985 if (!((phy_id_mask >> (31-i)) & 1))
986 *(alias++) = '?';
987 else if ((phy_id >> (31-i)) & 1)
988 *(alias++) = '1';
989 else
990 *(alias++) = '0';
991 }
992
993 /* Terminate the string */
994 *alias = 0;
995
996 return 1;
997}
998ADD_TO_DEVTABLE("mdio", mdio_device_id, do_mdio_entry);
999
1000/* Looks like: zorro:iN. */
1001static int do_zorro_entry(const char *filename, void *symval,
1002 char *alias)
1003{
1004 DEF_FIELD(symval, zorro_device_id, id);
1005 strcpy(alias, "zorro:");
1006 ADD(alias, "i", id != ZORRO_WILDCARD, id);
1007 return 1;
1008}
1009ADD_TO_DEVTABLE("zorro", zorro_device_id, do_zorro_entry);
1010
1011/* looks like: "pnp:dD" */
1012static int do_isapnp_entry(const char *filename,
1013 void *symval, char *alias)
1014{
1015 DEF_FIELD(symval, isapnp_device_id, vendor);
1016 DEF_FIELD(symval, isapnp_device_id, function);
1017 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
1018 'A' + ((vendor >> 2) & 0x3f) - 1,
1019 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
1020 'A' + ((vendor >> 8) & 0x1f) - 1,
1021 (function >> 4) & 0x0f, function & 0x0f,
1022 (function >> 12) & 0x0f, (function >> 8) & 0x0f);
1023 return 1;
1024}
1025ADD_TO_DEVTABLE("isapnp", isapnp_device_id, do_isapnp_entry);
1026
1027/* Looks like: "ipack:fNvNdN". */
1028static int do_ipack_entry(const char *filename,
1029 void *symval, char *alias)
1030{
1031 DEF_FIELD(symval, ipack_device_id, format);
1032 DEF_FIELD(symval, ipack_device_id, vendor);
1033 DEF_FIELD(symval, ipack_device_id, device);
1034 strcpy(alias, "ipack:");
1035 ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
1036 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
1037 ADD(alias, "d", device != IPACK_ANY_ID, device);
1038 add_wildcard(alias);
1039 return 1;
1040}
1041ADD_TO_DEVTABLE("ipack", ipack_device_id, do_ipack_entry);
1042
1043/*
1044 * Append a match expression for a single masked hex digit.
1045 * outp points to a pointer to the character at which to append.
1046 * *outp is updated on return to point just after the appended text,
1047 * to facilitate further appending.
1048 */
1049static void append_nibble_mask(char **outp,
1050 unsigned int nibble, unsigned int mask)
1051{
1052 char *p = *outp;
1053 unsigned int i;
1054
1055 switch (mask) {
1056 case 0:
1057 *p++ = '?';
1058 break;
1059
1060 case 0xf:
1061 p += sprintf(p, "%X", nibble);
1062 break;
1063
1064 default:
1065 /*
1066 * Dumbly emit a match pattern for all possible matching
1067 * digits. This could be improved in some cases using ranges,
1068 * but it has the advantage of being trivially correct, and is
1069 * often optimal.
1070 */
1071 *p++ = '[';
1072 for (i = 0; i < 0x10; i++)
1073 if ((i & mask) == nibble)
1074 p += sprintf(p, "%X", i);
1075 *p++ = ']';
1076 }
1077
1078 /* Ensure that the string remains NUL-terminated: */
1079 *p = '\0';
1080
1081 /* Advance the caller's end-of-string pointer: */
1082 *outp = p;
1083}
1084
1085/*
1086 * looks like: "amba:dN"
1087 *
1088 * N is exactly 8 digits, where each is an upper-case hex digit, or
1089 * a ? or [] pattern matching exactly one digit.
1090 */
1091static int do_amba_entry(const char *filename,
1092 void *symval, char *alias)
1093{
1094 unsigned int digit;
1095 char *p = alias;
1096 DEF_FIELD(symval, amba_id, id);
1097 DEF_FIELD(symval, amba_id, mask);
1098
1099 if ((id & mask) != id)
1100 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1101 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1102 filename, id, mask);
1103
1104 p += sprintf(alias, "amba:d");
1105 for (digit = 0; digit < 8; digit++)
1106 append_nibble_mask(&p,
1107 (id >> (4 * (7 - digit))) & 0xf,
1108 (mask >> (4 * (7 - digit))) & 0xf);
1109
1110 return 1;
1111}
1112ADD_TO_DEVTABLE("amba", amba_id, do_amba_entry);
1113
1114/* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
1115 * All fields are numbers. It would be nicer to use strings for vendor
1116 * and feature, but getting those out of the build system here is too
1117 * complicated.
1118 */
1119
1120static int do_x86cpu_entry(const char *filename, void *symval,
1121 char *alias)
1122{
1123 DEF_FIELD(symval, x86_cpu_id, feature);
1124 DEF_FIELD(symval, x86_cpu_id, family);
1125 DEF_FIELD(symval, x86_cpu_id, model);
1126 DEF_FIELD(symval, x86_cpu_id, vendor);
1127
1128 strcpy(alias, "cpu:type:x86,");
1129 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
1130 ADD(alias, "fam", family != X86_FAMILY_ANY, family);
1131 ADD(alias, "mod", model != X86_MODEL_ANY, model);
1132 strcat(alias, ":feature:*");
1133 if (feature != X86_FEATURE_ANY)
1134 sprintf(alias + strlen(alias), "%04X*", feature);
1135 return 1;
1136}
1137ADD_TO_DEVTABLE("x86cpu", x86_cpu_id, do_x86cpu_entry);
1138
1139/* LOOKS like cpu:type:*:feature:*FEAT* */
1140static int do_cpu_entry(const char *filename, void *symval, char *alias)
1141{
1142 DEF_FIELD(symval, cpu_feature, feature);
1143
1144 sprintf(alias, "cpu:type:*:feature:*%04X*", feature);
1145 return 1;
1146}
1147ADD_TO_DEVTABLE("cpu", cpu_feature, do_cpu_entry);
1148
1149/* Looks like: mei:S */
1150static int do_mei_entry(const char *filename, void *symval,
1151 char *alias)
1152{
1153 DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
1154
1155 sprintf(alias, MEI_CL_MODULE_PREFIX "%s", *name);
1156
1157 return 1;
1158}
1159ADD_TO_DEVTABLE("mei", mei_cl_device_id, do_mei_entry);
1160
1161/* Looks like: rapidio:vNdNavNadN */
1162static int do_rio_entry(const char *filename,
1163 void *symval, char *alias)
1164{
1165 DEF_FIELD(symval, rio_device_id, did);
1166 DEF_FIELD(symval, rio_device_id, vid);
1167 DEF_FIELD(symval, rio_device_id, asm_did);
1168 DEF_FIELD(symval, rio_device_id, asm_vid);
1169
1170 strcpy(alias, "rapidio:");
1171 ADD(alias, "v", vid != RIO_ANY_ID, vid);
1172 ADD(alias, "d", did != RIO_ANY_ID, did);
1173 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
1174 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
1175
1176 add_wildcard(alias);
1177 return 1;
1178}
1179ADD_TO_DEVTABLE("rapidio", rio_device_id, do_rio_entry);
1180
1181/* Does namelen bytes of name exactly match the symbol? */
1182static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1183{
1184 if (namelen != strlen(symbol))
1185 return false;
1186
1187 return memcmp(name, symbol, namelen) == 0;
1188}
1189
1190static void do_table(void *symval, unsigned long size,
1191 unsigned long id_size,
1192 const char *device_id,
1193 void *function,
1194 struct module *mod)
1195{
1196 unsigned int i;
1197 char alias[500];
1198 int (*do_entry)(const char *, void *entry, char *alias) = function;
1199
1200 device_id_check(mod->name, device_id, size, id_size, symval);
1201 /* Leave last one: it's the terminator. */
1202 size -= id_size;
1203
1204 for (i = 0; i < size; i += id_size) {
1205 if (do_entry(mod->name, symval+i, alias)) {
1206 buf_printf(&mod->dev_table_buf,
1207 "MODULE_ALIAS(\"%s\");\n", alias);
1208 }
1209 }
1210}
1211
1212/* Create MODULE_ALIAS() statements.
1213 * At this time, we cannot write the actual output C source yet,
1214 * so we write into the mod->dev_table_buf buffer. */
1215void handle_moddevtable(struct module *mod, struct elf_info *info,
1216 Elf_Sym *sym, const char *symname)
1217{
1218 void *symval;
1219 char *zeros = NULL;
1220 const char *name, *identifier;
1221 unsigned int namelen;
1222
1223 /* We're looking for a section relative symbol */
1224 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1225 return;
1226
1227 /* We're looking for an object */
1228 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1229 return;
1230
1231 /* All our symbols are of form <prefix>__mod_<name>__<identifier>_device_table. */
1232 name = strstr(symname, "__mod_");
1233 if (!name)
1234 return;
1235 name += strlen("__mod_");
1236 namelen = strlen(name);
1237 if (namelen < strlen("_device_table"))
1238 return;
1239 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1240 return;
1241 identifier = strstr(name, "__");
1242 if (!identifier)
1243 return;
1244 namelen = identifier - name;
1245
1246 /* Handle all-NULL symbols allocated into .bss */
1247 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1248 zeros = calloc(1, sym->st_size);
1249 symval = zeros;
1250 } else {
1251 symval = (void *)info->hdr
1252 + info->sechdrs[get_secindex(info, sym)].sh_offset
1253 + sym->st_value;
1254 }
1255
1256 /* First handle the "special" cases */
1257 if (sym_is(name, namelen, "usb"))
1258 do_usb_table(symval, sym->st_size, mod);
1259 else if (sym_is(name, namelen, "pnp"))
1260 do_pnp_device_entry(symval, sym->st_size, mod);
1261 else if (sym_is(name, namelen, "pnp_card"))
1262 do_pnp_card_entries(symval, sym->st_size, mod);
1263 else {
1264 struct devtable **p;
1265 INIT_SECTION(__devtable);
1266
1267 for (p = __start___devtable; p < __stop___devtable; p++) {
1268 if (sym_is(name, namelen, (*p)->device_id)) {
1269 do_table(symval, sym->st_size, (*p)->id_size,
1270 (*p)->device_id, (*p)->function, mod);
1271 break;
1272 }
1273 }
1274 }
1275 free(zeros);
1276}
1277
1278/* Now add out buffered information to the generated C source */
1279void add_moddevtable(struct buffer *buf, struct module *mod)
1280{
1281 buf_printf(buf, "\n");
1282 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1283 free(mod->dev_table_buf.p);
1284}