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