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161dd0d67da8a84f0062672cd9125c491a2f58e3
[deliverable/linux.git] / scripts / mod / file2alias.c
1 /* Simple code to turn various tables in an ELF file into alias definitions.
2 * This deals with kernel datastructures where they should be
3 * dealt with: in the kernel source.
4 *
5 * Copyright 2002-2003 Rusty Russell, IBM Corporation
6 * 2003 Kai Germaschewski
7 *
8 *
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
11 */
12
13 #include "modpost.h"
14 #include "devicetable-offsets.h"
15
16 /* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
17 * use either stdint.h or inttypes.h for the rest. */
18 #if KERNEL_ELFCLASS == ELFCLASS32
19 typedef Elf32_Addr kernel_ulong_t;
20 #define BITS_PER_LONG 32
21 #else
22 typedef Elf64_Addr kernel_ulong_t;
23 #define BITS_PER_LONG 64
24 #endif
25 #ifdef __sun__
26 #include <inttypes.h>
27 #else
28 #include <stdint.h>
29 #endif
30
31 #include <ctype.h>
32 #include <stdbool.h>
33
34 typedef uint32_t __u32;
35 typedef uint16_t __u16;
36 typedef unsigned char __u8;
37 typedef struct {
38 __u8 b[16];
39 } uuid_le;
40
41 /* Big exception to the "don't include kernel headers into userspace, which
42 * even potentially has different endianness and word sizes, since
43 * we handle those differences explicitly below */
44 #include "../../include/linux/mod_devicetable.h"
45
46 /* This array collects all instances that use the generic do_table */
47 struct devtable {
48 const char *device_id; /* name of table, __mod_<name>__*_device_table. */
49 unsigned long id_size;
50 void *function;
51 };
52
53 #define ___cat(a,b) a ## b
54 #define __cat(a,b) ___cat(a,b)
55
56 /* we need some special handling for this host tool running eventually on
57 * Darwin. The Mach-O section handling is a bit different than ELF section
58 * handling. The differnces in detail are:
59 * a) we have segments which have sections
60 * b) we need a API call to get the respective section symbols */
61 #if defined(__MACH__)
62 #include <mach-o/getsect.h>
63
64 #define INIT_SECTION(name) do { \
65 unsigned long name ## _len; \
66 char *__cat(pstart_,name) = getsectdata("__TEXT", \
67 #name, &__cat(name,_len)); \
68 char *__cat(pstop_,name) = __cat(pstart_,name) + \
69 __cat(name, _len); \
70 __cat(__start_,name) = (void *)__cat(pstart_,name); \
71 __cat(__stop_,name) = (void *)__cat(pstop_,name); \
72 } while (0)
73 #define SECTION(name) __attribute__((section("__TEXT, " #name)))
74
75 struct devtable **__start___devtable, **__stop___devtable;
76 #else
77 #define INIT_SECTION(name) /* no-op for ELF */
78 #define SECTION(name) __attribute__((section(#name)))
79
80 /* We construct a table of pointers in an ELF section (pointers generally
81 * go unpadded by gcc). ld creates boundary syms for us. */
82 extern struct devtable *__start___devtable[], *__stop___devtable[];
83 #endif /* __MACH__ */
84
85 #if !defined(__used)
86 # if __GNUC__ == 3 && __GNUC_MINOR__ < 3
87 # define __used __attribute__((__unused__))
88 # else
89 # define __used __attribute__((__used__))
90 # endif
91 #endif
92
93 /* Define a variable f that holds the value of field f of struct devid
94 * based at address m.
95 */
96 #define DEF_FIELD(m, devid, f) \
97 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f))
98 /* Define a variable f that holds the address of field f of struct devid
99 * based at address m. Due to the way typeof works, for a field of type
100 * T[N] the variable has type T(*)[N], _not_ T*.
101 */
102 #define DEF_FIELD_ADDR(m, devid, f) \
103 typeof(((struct devid *)0)->f) *f = ((m) + OFF_##devid##_##f)
104
105 /* Add a table entry. We test function type matches while we're here. */
106 #define ADD_TO_DEVTABLE(device_id, type, function) \
107 static struct devtable __cat(devtable,__LINE__) = { \
108 device_id + 0*sizeof((function)((const char *)NULL, \
109 (void *)NULL, \
110 (char *)NULL)), \
111 SIZE_##type, (function) }; \
112 static struct devtable *SECTION(__devtable) __used \
113 __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__)
114
115 #define ADD(str, sep, cond, field) \
116 do { \
117 strcat(str, sep); \
118 if (cond) \
119 sprintf(str + strlen(str), \
120 sizeof(field) == 1 ? "%02X" : \
121 sizeof(field) == 2 ? "%04X" : \
122 sizeof(field) == 4 ? "%08X" : "", \
123 field); \
124 else \
125 sprintf(str + strlen(str), "*"); \
126 } while(0)
127
128 /* End in a wildcard, for future extension */
129 static inline void add_wildcard(char *str)
130 {
131 int len = strlen(str);
132
133 if (str[len - 1] != '*')
134 strcat(str + len, "*");
135 }
136
137 static inline void add_uuid(char *str, uuid_le uuid)
138 {
139 int len = strlen(str);
140
141 sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
142 uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0],
143 uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6],
144 uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11],
145 uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]);
146 }
147
148 /**
149 * Check that sizeof(device_id type) are consistent with size of section
150 * in .o file. If in-consistent then userspace and kernel does not agree
151 * on actual size which is a bug.
152 * Also verify that the final entry in the table is all zeros.
153 * Ignore both checks if build host differ from target host and size differs.
154 **/
155 static void device_id_check(const char *modname, const char *device_id,
156 unsigned long size, unsigned long id_size,
157 void *symval)
158 {
159 int i;
160
161 if (size % id_size || size < id_size) {
162 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
163 "of the size of "
164 "section __mod_%s__<identifier>_device_table=%lu.\n"
165 "Fix definition of struct %s_device_id "
166 "in mod_devicetable.h\n",
167 modname, device_id, id_size, device_id, size, device_id);
168 }
169 /* Verify last one is a terminator */
170 for (i = 0; i < id_size; i++ ) {
171 if (*(uint8_t*)(symval+size-id_size+i)) {
172 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
173 "The last of %lu is:\n",
174 modname, device_id, id_size, size / id_size);
175 for (i = 0; i < id_size; i++ )
176 fprintf(stderr,"0x%02x ",
177 *(uint8_t*)(symval+size-id_size+i) );
178 fprintf(stderr,"\n");
179 fatal("%s: struct %s_device_id is not terminated "
180 "with a NULL entry!\n", modname, device_id);
181 }
182 }
183 }
184
185 /* USB is special because the bcdDevice can be matched against a numeric range */
186 /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
187 static void do_usb_entry(void *symval,
188 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
189 unsigned char range_lo, unsigned char range_hi,
190 unsigned char max, struct module *mod)
191 {
192 char alias[500];
193 DEF_FIELD(symval, usb_device_id, match_flags);
194 DEF_FIELD(symval, usb_device_id, idVendor);
195 DEF_FIELD(symval, usb_device_id, idProduct);
196 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
197 DEF_FIELD(symval, usb_device_id, bDeviceClass);
198 DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
199 DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
200 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
201 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
202 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
203 DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
204
205 strcpy(alias, "usb:");
206 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
207 idVendor);
208 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
209 idProduct);
210
211 strcat(alias, "d");
212 if (bcdDevice_initial_digits)
213 sprintf(alias + strlen(alias), "%0*X",
214 bcdDevice_initial_digits, bcdDevice_initial);
215 if (range_lo == range_hi)
216 sprintf(alias + strlen(alias), "%X", range_lo);
217 else if (range_lo > 0 || range_hi < max) {
218 if (range_lo > 0x9 || range_hi < 0xA)
219 sprintf(alias + strlen(alias),
220 "[%X-%X]",
221 range_lo,
222 range_hi);
223 else {
224 sprintf(alias + strlen(alias),
225 range_lo < 0x9 ? "[%X-9" : "[%X",
226 range_lo);
227 sprintf(alias + strlen(alias),
228 range_hi > 0xA ? "A-%X]" : "%X]",
229 range_hi);
230 }
231 }
232 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
233 strcat(alias, "*");
234
235 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
236 bDeviceClass);
237 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
238 bDeviceSubClass);
239 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
240 bDeviceProtocol);
241 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
242 bInterfaceClass);
243 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
244 bInterfaceSubClass);
245 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
246 bInterfaceProtocol);
247 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
248 bInterfaceNumber);
249
250 add_wildcard(alias);
251 buf_printf(&mod->dev_table_buf,
252 "MODULE_ALIAS(\"%s\");\n", alias);
253 }
254
255 /* Handles increment/decrement of BCD formatted integers */
256 /* Returns the previous value, so it works like i++ or i-- */
257 static unsigned int incbcd(unsigned int *bcd,
258 int inc,
259 unsigned char max,
260 size_t chars)
261 {
262 unsigned int init = *bcd, i, j;
263 unsigned long long c, dec = 0;
264
265 /* If bcd is not in BCD format, just increment */
266 if (max > 0x9) {
267 *bcd += inc;
268 return init;
269 }
270
271 /* Convert BCD to Decimal */
272 for (i=0 ; i < chars ; i++) {
273 c = (*bcd >> (i << 2)) & 0xf;
274 c = c > 9 ? 9 : c; /* force to bcd just in case */
275 for (j=0 ; j < i ; j++)
276 c = c * 10;
277 dec += c;
278 }
279
280 /* Do our increment/decrement */
281 dec += inc;
282 *bcd = 0;
283
284 /* Convert back to BCD */
285 for (i=0 ; i < chars ; i++) {
286 for (c=1,j=0 ; j < i ; j++)
287 c = c * 10;
288 c = (dec / c) % 10;
289 *bcd += c << (i << 2);
290 }
291 return init;
292 }
293
294 static void do_usb_entry_multi(void *symval, struct module *mod)
295 {
296 unsigned int devlo, devhi;
297 unsigned char chi, clo, max;
298 int ndigits;
299
300 DEF_FIELD(symval, usb_device_id, match_flags);
301 DEF_FIELD(symval, usb_device_id, idVendor);
302 DEF_FIELD(symval, usb_device_id, idProduct);
303 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
304 DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
305 DEF_FIELD(symval, usb_device_id, bDeviceClass);
306 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
307
308 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
309 bcdDevice_lo : 0x0U;
310 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
311 bcdDevice_hi : ~0x0U;
312
313 /* Figure out if this entry is in bcd or hex format */
314 max = 0x9; /* Default to decimal format */
315 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
316 clo = (devlo >> (ndigits << 2)) & 0xf;
317 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
318 if (clo > max || chi > max) {
319 max = 0xf;
320 break;
321 }
322 }
323
324 /*
325 * Some modules (visor) have empty slots as placeholder for
326 * run-time specification that results in catch-all alias
327 */
328 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
329 return;
330
331 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
332 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
333 clo = devlo & 0xf;
334 chi = devhi & 0xf;
335 if (chi > max) /* If we are in bcd mode, truncate if necessary */
336 chi = max;
337 devlo >>= 4;
338 devhi >>= 4;
339
340 if (devlo == devhi || !ndigits) {
341 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
342 break;
343 }
344
345 if (clo > 0x0)
346 do_usb_entry(symval,
347 incbcd(&devlo, 1, max,
348 sizeof(bcdDevice_lo) * 2),
349 ndigits, clo, max, max, mod);
350
351 if (chi < max)
352 do_usb_entry(symval,
353 incbcd(&devhi, -1, max,
354 sizeof(bcdDevice_lo) * 2),
355 ndigits, 0x0, chi, max, mod);
356 }
357 }
358
359 static void do_usb_table(void *symval, unsigned long size,
360 struct module *mod)
361 {
362 unsigned int i;
363 const unsigned long id_size = SIZE_usb_device_id;
364
365 device_id_check(mod->name, "usb", size, id_size, symval);
366
367 /* Leave last one: it's the terminator. */
368 size -= id_size;
369
370 for (i = 0; i < size; i += id_size)
371 do_usb_entry_multi(symval + i, mod);
372 }
373
374 /* Looks like: hid:bNvNpN */
375 static int do_hid_entry(const char *filename,
376 void *symval, char *alias)
377 {
378 DEF_FIELD(symval, hid_device_id, bus);
379 DEF_FIELD(symval, hid_device_id, group);
380 DEF_FIELD(symval, hid_device_id, vendor);
381 DEF_FIELD(symval, hid_device_id, product);
382
383 sprintf(alias, "hid:");
384 ADD(alias, "b", bus != HID_BUS_ANY, bus);
385 ADD(alias, "g", group != HID_GROUP_ANY, group);
386 ADD(alias, "v", vendor != HID_ANY_ID, vendor);
387 ADD(alias, "p", product != HID_ANY_ID, product);
388
389 return 1;
390 }
391 ADD_TO_DEVTABLE("hid", hid_device_id, do_hid_entry);
392
393 /* Looks like: ieee1394:venNmoNspNverN */
394 static int do_ieee1394_entry(const char *filename,
395 void *symval, char *alias)
396 {
397 DEF_FIELD(symval, ieee1394_device_id, match_flags);
398 DEF_FIELD(symval, ieee1394_device_id, vendor_id);
399 DEF_FIELD(symval, ieee1394_device_id, model_id);
400 DEF_FIELD(symval, ieee1394_device_id, specifier_id);
401 DEF_FIELD(symval, ieee1394_device_id, version);
402
403 strcpy(alias, "ieee1394:");
404 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
405 vendor_id);
406 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
407 model_id);
408 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
409 specifier_id);
410 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
411 version);
412
413 add_wildcard(alias);
414 return 1;
415 }
416 ADD_TO_DEVTABLE("ieee1394", ieee1394_device_id, do_ieee1394_entry);
417
418 /* Looks like: pci:vNdNsvNsdNbcNscNiN. */
419 static int do_pci_entry(const char *filename,
420 void *symval, char *alias)
421 {
422 /* Class field can be divided into these three. */
423 unsigned char baseclass, subclass, interface,
424 baseclass_mask, subclass_mask, interface_mask;
425
426 DEF_FIELD(symval, pci_device_id, vendor);
427 DEF_FIELD(symval, pci_device_id, device);
428 DEF_FIELD(symval, pci_device_id, subvendor);
429 DEF_FIELD(symval, pci_device_id, subdevice);
430 DEF_FIELD(symval, pci_device_id, class);
431 DEF_FIELD(symval, pci_device_id, class_mask);
432
433 strcpy(alias, "pci:");
434 ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
435 ADD(alias, "d", device != PCI_ANY_ID, device);
436 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
437 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
438
439 baseclass = (class) >> 16;
440 baseclass_mask = (class_mask) >> 16;
441 subclass = (class) >> 8;
442 subclass_mask = (class_mask) >> 8;
443 interface = class;
444 interface_mask = class_mask;
445
446 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
447 || (subclass_mask != 0 && subclass_mask != 0xFF)
448 || (interface_mask != 0 && interface_mask != 0xFF)) {
449 warn("Can't handle masks in %s:%04X\n",
450 filename, class_mask);
451 return 0;
452 }
453
454 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
455 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
456 ADD(alias, "i", interface_mask == 0xFF, interface);
457 add_wildcard(alias);
458 return 1;
459 }
460 ADD_TO_DEVTABLE("pci", pci_device_id, do_pci_entry);
461
462 /* looks like: "ccw:tNmNdtNdmN" */
463 static int do_ccw_entry(const char *filename,
464 void *symval, char *alias)
465 {
466 DEF_FIELD(symval, ccw_device_id, match_flags);
467 DEF_FIELD(symval, ccw_device_id, cu_type);
468 DEF_FIELD(symval, ccw_device_id, cu_model);
469 DEF_FIELD(symval, ccw_device_id, dev_type);
470 DEF_FIELD(symval, ccw_device_id, dev_model);
471
472 strcpy(alias, "ccw:");
473 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
474 cu_type);
475 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
476 cu_model);
477 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
478 dev_type);
479 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
480 dev_model);
481 add_wildcard(alias);
482 return 1;
483 }
484 ADD_TO_DEVTABLE("ccw", ccw_device_id, do_ccw_entry);
485
486 /* looks like: "ap:tN" */
487 static int do_ap_entry(const char *filename,
488 void *symval, char *alias)
489 {
490 DEF_FIELD(symval, ap_device_id, dev_type);
491
492 sprintf(alias, "ap:t%02X*", dev_type);
493 return 1;
494 }
495 ADD_TO_DEVTABLE("ap", ap_device_id, do_ap_entry);
496
497 /* looks like: "css:tN" */
498 static int do_css_entry(const char *filename,
499 void *symval, char *alias)
500 {
501 DEF_FIELD(symval, css_device_id, type);
502
503 sprintf(alias, "css:t%01X", type);
504 return 1;
505 }
506 ADD_TO_DEVTABLE("css", css_device_id, do_css_entry);
507
508 /* Looks like: "serio:tyNprNidNexN" */
509 static int do_serio_entry(const char *filename,
510 void *symval, char *alias)
511 {
512 DEF_FIELD(symval, serio_device_id, type);
513 DEF_FIELD(symval, serio_device_id, proto);
514 DEF_FIELD(symval, serio_device_id, id);
515 DEF_FIELD(symval, serio_device_id, extra);
516
517 strcpy(alias, "serio:");
518 ADD(alias, "ty", type != SERIO_ANY, type);
519 ADD(alias, "pr", proto != SERIO_ANY, proto);
520 ADD(alias, "id", id != SERIO_ANY, id);
521 ADD(alias, "ex", extra != SERIO_ANY, extra);
522
523 add_wildcard(alias);
524 return 1;
525 }
526 ADD_TO_DEVTABLE("serio", serio_device_id, do_serio_entry);
527
528 /* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or
529 * "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if)
530 *
531 * NOTE: Each driver should use one of the following : _HID, _CIDs
532 * or _CLS. Also, bb, ss, and pp can be substituted with ??
533 * as don't care byte.
534 */
535 static int do_acpi_entry(const char *filename,
536 void *symval, char *alias)
537 {
538 DEF_FIELD_ADDR(symval, acpi_device_id, id);
539 DEF_FIELD_ADDR(symval, acpi_device_id, cls);
540 DEF_FIELD_ADDR(symval, acpi_device_id, cls_msk);
541
542 if (id && strlen((const char *)*id))
543 sprintf(alias, "acpi*:%s:*", *id);
544 else if (cls) {
545 int i, byte_shift, cnt = 0;
546 unsigned int msk;
547
548 sprintf(&alias[cnt], "acpi*:");
549 cnt = 6;
550 for (i = 1; i <= 3; i++) {
551 byte_shift = 8 * (3-i);
552 msk = (*cls_msk >> byte_shift) & 0xFF;
553 if (msk)
554 sprintf(&alias[cnt], "%02x",
555 (*cls >> byte_shift) & 0xFF);
556 else
557 sprintf(&alias[cnt], "??");
558 cnt += 2;
559 }
560 sprintf(&alias[cnt], ":*");
561 }
562 return 1;
563 }
564 ADD_TO_DEVTABLE("acpi", acpi_device_id, do_acpi_entry);
565
566 /* looks like: "pnp:dD" */
567 static void do_pnp_device_entry(void *symval, unsigned long size,
568 struct module *mod)
569 {
570 const unsigned long id_size = SIZE_pnp_device_id;
571 const unsigned int count = (size / id_size)-1;
572 unsigned int i;
573
574 device_id_check(mod->name, "pnp", size, id_size, symval);
575
576 for (i = 0; i < count; i++) {
577 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id);
578 char acpi_id[sizeof(*id)];
579 int j;
580
581 buf_printf(&mod->dev_table_buf,
582 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
583
584 /* fix broken pnp bus lowercasing */
585 for (j = 0; j < sizeof(acpi_id); j++)
586 acpi_id[j] = toupper((*id)[j]);
587 buf_printf(&mod->dev_table_buf,
588 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
589 }
590 }
591
592 /* looks like: "pnp:dD" for every device of the card */
593 static void do_pnp_card_entries(void *symval, unsigned long size,
594 struct module *mod)
595 {
596 const unsigned long id_size = SIZE_pnp_card_device_id;
597 const unsigned int count = (size / id_size)-1;
598 unsigned int i;
599
600 device_id_check(mod->name, "pnp", size, id_size, symval);
601
602 for (i = 0; i < count; i++) {
603 unsigned int j;
604 DEF_FIELD_ADDR(symval + i*id_size, pnp_card_device_id, devs);
605
606 for (j = 0; j < PNP_MAX_DEVICES; j++) {
607 const char *id = (char *)(*devs)[j].id;
608 int i2, j2;
609 int dup = 0;
610
611 if (!id[0])
612 break;
613
614 /* find duplicate, already added value */
615 for (i2 = 0; i2 < i && !dup; i2++) {
616 DEF_FIELD_ADDR(symval + i2*id_size, pnp_card_device_id, devs);
617
618 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
619 const char *id2 = (char *)(*devs)[j2].id;
620
621 if (!id2[0])
622 break;
623
624 if (!strcmp(id, id2)) {
625 dup = 1;
626 break;
627 }
628 }
629 }
630
631 /* add an individual alias for every device entry */
632 if (!dup) {
633 char acpi_id[PNP_ID_LEN];
634 int k;
635
636 buf_printf(&mod->dev_table_buf,
637 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
638
639 /* fix broken pnp bus lowercasing */
640 for (k = 0; k < sizeof(acpi_id); k++)
641 acpi_id[k] = toupper(id[k]);
642 buf_printf(&mod->dev_table_buf,
643 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
644 }
645 }
646 }
647 }
648
649 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
650 static int do_pcmcia_entry(const char *filename,
651 void *symval, char *alias)
652 {
653 unsigned int i;
654 DEF_FIELD(symval, pcmcia_device_id, match_flags);
655 DEF_FIELD(symval, pcmcia_device_id, manf_id);
656 DEF_FIELD(symval, pcmcia_device_id, card_id);
657 DEF_FIELD(symval, pcmcia_device_id, func_id);
658 DEF_FIELD(symval, pcmcia_device_id, function);
659 DEF_FIELD(symval, pcmcia_device_id, device_no);
660 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
661
662 for (i=0; i<4; i++) {
663 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]);
664 }
665
666 strcpy(alias, "pcmcia:");
667 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
668 manf_id);
669 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
670 card_id);
671 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
672 func_id);
673 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
674 function);
675 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
676 device_no);
677 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]);
678 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]);
679 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]);
680 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]);
681
682 add_wildcard(alias);
683 return 1;
684 }
685 ADD_TO_DEVTABLE("pcmcia", pcmcia_device_id, do_pcmcia_entry);
686
687 static int do_of_entry (const char *filename, void *symval, char *alias)
688 {
689 int len;
690 char *tmp;
691 DEF_FIELD_ADDR(symval, of_device_id, name);
692 DEF_FIELD_ADDR(symval, of_device_id, type);
693 DEF_FIELD_ADDR(symval, of_device_id, compatible);
694
695 len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
696 (*type)[0] ? *type : "*");
697
698 if (compatible[0])
699 sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
700 *compatible);
701
702 /* Replace all whitespace with underscores */
703 for (tmp = alias; tmp && *tmp; tmp++)
704 if (isspace (*tmp))
705 *tmp = '_';
706
707 return 1;
708 }
709 ADD_TO_DEVTABLE("of", of_device_id, do_of_entry);
710
711 static int do_vio_entry(const char *filename, void *symval,
712 char *alias)
713 {
714 char *tmp;
715 DEF_FIELD_ADDR(symval, vio_device_id, type);
716 DEF_FIELD_ADDR(symval, vio_device_id, compat);
717
718 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
719 (*compat)[0] ? *compat : "*");
720
721 /* Replace all whitespace with underscores */
722 for (tmp = alias; tmp && *tmp; tmp++)
723 if (isspace (*tmp))
724 *tmp = '_';
725
726 add_wildcard(alias);
727 return 1;
728 }
729 ADD_TO_DEVTABLE("vio", vio_device_id, do_vio_entry);
730
731 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
732
733 static void do_input(char *alias,
734 kernel_ulong_t *arr, unsigned int min, unsigned int max)
735 {
736 unsigned int i;
737
738 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++)
739 arr[i] = TO_NATIVE(arr[i]);
740 for (i = min; i < max; i++)
741 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
742 sprintf(alias + strlen(alias), "%X,*", i);
743 }
744
745 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
746 static int do_input_entry(const char *filename, void *symval,
747 char *alias)
748 {
749 DEF_FIELD(symval, input_device_id, flags);
750 DEF_FIELD(symval, input_device_id, bustype);
751 DEF_FIELD(symval, input_device_id, vendor);
752 DEF_FIELD(symval, input_device_id, product);
753 DEF_FIELD(symval, input_device_id, version);
754 DEF_FIELD_ADDR(symval, input_device_id, evbit);
755 DEF_FIELD_ADDR(symval, input_device_id, keybit);
756 DEF_FIELD_ADDR(symval, input_device_id, relbit);
757 DEF_FIELD_ADDR(symval, input_device_id, absbit);
758 DEF_FIELD_ADDR(symval, input_device_id, mscbit);
759 DEF_FIELD_ADDR(symval, input_device_id, ledbit);
760 DEF_FIELD_ADDR(symval, input_device_id, sndbit);
761 DEF_FIELD_ADDR(symval, input_device_id, ffbit);
762 DEF_FIELD_ADDR(symval, input_device_id, swbit);
763
764 sprintf(alias, "input:");
765
766 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
767 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
768 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
769 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
770
771 sprintf(alias + strlen(alias), "-e*");
772 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
773 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
774 sprintf(alias + strlen(alias), "k*");
775 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
776 do_input(alias, *keybit,
777 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
778 INPUT_DEVICE_ID_KEY_MAX);
779 sprintf(alias + strlen(alias), "r*");
780 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
781 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
782 sprintf(alias + strlen(alias), "a*");
783 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
784 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
785 sprintf(alias + strlen(alias), "m*");
786 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
787 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
788 sprintf(alias + strlen(alias), "l*");
789 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
790 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
791 sprintf(alias + strlen(alias), "s*");
792 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
793 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
794 sprintf(alias + strlen(alias), "f*");
795 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
796 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
797 sprintf(alias + strlen(alias), "w*");
798 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
799 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
800 return 1;
801 }
802 ADD_TO_DEVTABLE("input", input_device_id, do_input_entry);
803
804 static int do_eisa_entry(const char *filename, void *symval,
805 char *alias)
806 {
807 DEF_FIELD_ADDR(symval, eisa_device_id, sig);
808 if (sig[0])
809 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig);
810 else
811 strcat(alias, "*");
812 return 1;
813 }
814 ADD_TO_DEVTABLE("eisa", eisa_device_id, do_eisa_entry);
815
816 /* Looks like: parisc:tNhvNrevNsvN */
817 static int do_parisc_entry(const char *filename, void *symval,
818 char *alias)
819 {
820 DEF_FIELD(symval, parisc_device_id, hw_type);
821 DEF_FIELD(symval, parisc_device_id, hversion);
822 DEF_FIELD(symval, parisc_device_id, hversion_rev);
823 DEF_FIELD(symval, parisc_device_id, sversion);
824
825 strcpy(alias, "parisc:");
826 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
827 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
828 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
829 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
830
831 add_wildcard(alias);
832 return 1;
833 }
834 ADD_TO_DEVTABLE("parisc", parisc_device_id, do_parisc_entry);
835
836 /* Looks like: sdio:cNvNdN. */
837 static int do_sdio_entry(const char *filename,
838 void *symval, char *alias)
839 {
840 DEF_FIELD(symval, sdio_device_id, class);
841 DEF_FIELD(symval, sdio_device_id, vendor);
842 DEF_FIELD(symval, sdio_device_id, device);
843
844 strcpy(alias, "sdio:");
845 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
846 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
847 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
848 add_wildcard(alias);
849 return 1;
850 }
851 ADD_TO_DEVTABLE("sdio", sdio_device_id, do_sdio_entry);
852
853 /* Looks like: ssb:vNidNrevN. */
854 static int do_ssb_entry(const char *filename,
855 void *symval, char *alias)
856 {
857 DEF_FIELD(symval, ssb_device_id, vendor);
858 DEF_FIELD(symval, ssb_device_id, coreid);
859 DEF_FIELD(symval, ssb_device_id, revision);
860
861 strcpy(alias, "ssb:");
862 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
863 ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
864 ADD(alias, "rev", revision != SSB_ANY_REV, revision);
865 add_wildcard(alias);
866 return 1;
867 }
868 ADD_TO_DEVTABLE("ssb", ssb_device_id, do_ssb_entry);
869
870 /* Looks like: bcma:mNidNrevNclN. */
871 static int do_bcma_entry(const char *filename,
872 void *symval, char *alias)
873 {
874 DEF_FIELD(symval, bcma_device_id, manuf);
875 DEF_FIELD(symval, bcma_device_id, id);
876 DEF_FIELD(symval, bcma_device_id, rev);
877 DEF_FIELD(symval, bcma_device_id, class);
878
879 strcpy(alias, "bcma:");
880 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
881 ADD(alias, "id", id != BCMA_ANY_ID, id);
882 ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
883 ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
884 add_wildcard(alias);
885 return 1;
886 }
887 ADD_TO_DEVTABLE("bcma", bcma_device_id, do_bcma_entry);
888
889 /* Looks like: virtio:dNvN */
890 static int do_virtio_entry(const char *filename, void *symval,
891 char *alias)
892 {
893 DEF_FIELD(symval, virtio_device_id, device);
894 DEF_FIELD(symval, virtio_device_id, vendor);
895
896 strcpy(alias, "virtio:");
897 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
898 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
899
900 add_wildcard(alias);
901 return 1;
902 }
903 ADD_TO_DEVTABLE("virtio", virtio_device_id, do_virtio_entry);
904
905 /*
906 * Looks like: vmbus:guid
907 * Each byte of the guid will be represented by two hex characters
908 * in the name.
909 */
910
911 static int do_vmbus_entry(const char *filename, void *symval,
912 char *alias)
913 {
914 int i;
915 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
916 char guid_name[(sizeof(*guid) + 1) * 2];
917
918 for (i = 0; i < (sizeof(*guid) * 2); i += 2)
919 sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2]));
920
921 strcpy(alias, "vmbus:");
922 strcat(alias, guid_name);
923
924 return 1;
925 }
926 ADD_TO_DEVTABLE("vmbus", hv_vmbus_device_id, do_vmbus_entry);
927
928 /* Looks like: i2c:S */
929 static int do_i2c_entry(const char *filename, void *symval,
930 char *alias)
931 {
932 DEF_FIELD_ADDR(symval, i2c_device_id, name);
933 sprintf(alias, I2C_MODULE_PREFIX "%s", *name);
934
935 return 1;
936 }
937 ADD_TO_DEVTABLE("i2c", i2c_device_id, do_i2c_entry);
938
939 /* Looks like: spi:S */
940 static int do_spi_entry(const char *filename, void *symval,
941 char *alias)
942 {
943 DEF_FIELD_ADDR(symval, spi_device_id, name);
944 sprintf(alias, SPI_MODULE_PREFIX "%s", *name);
945
946 return 1;
947 }
948 ADD_TO_DEVTABLE("spi", spi_device_id, do_spi_entry);
949
950 static const struct dmifield {
951 const char *prefix;
952 int field;
953 } dmi_fields[] = {
954 { "bvn", DMI_BIOS_VENDOR },
955 { "bvr", DMI_BIOS_VERSION },
956 { "bd", DMI_BIOS_DATE },
957 { "svn", DMI_SYS_VENDOR },
958 { "pn", DMI_PRODUCT_NAME },
959 { "pvr", DMI_PRODUCT_VERSION },
960 { "rvn", DMI_BOARD_VENDOR },
961 { "rn", DMI_BOARD_NAME },
962 { "rvr", DMI_BOARD_VERSION },
963 { "cvn", DMI_CHASSIS_VENDOR },
964 { "ct", DMI_CHASSIS_TYPE },
965 { "cvr", DMI_CHASSIS_VERSION },
966 { NULL, DMI_NONE }
967 };
968
969 static void dmi_ascii_filter(char *d, const char *s)
970 {
971 /* Filter out characters we don't want to see in the modalias string */
972 for (; *s; s++)
973 if (*s > ' ' && *s < 127 && *s != ':')
974 *(d++) = *s;
975
976 *d = 0;
977 }
978
979
980 static int do_dmi_entry(const char *filename, void *symval,
981 char *alias)
982 {
983 int i, j;
984 DEF_FIELD_ADDR(symval, dmi_system_id, matches);
985 sprintf(alias, "dmi*");
986
987 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
988 for (j = 0; j < 4; j++) {
989 if ((*matches)[j].slot &&
990 (*matches)[j].slot == dmi_fields[i].field) {
991 sprintf(alias + strlen(alias), ":%s*",
992 dmi_fields[i].prefix);
993 dmi_ascii_filter(alias + strlen(alias),
994 (*matches)[j].substr);
995 strcat(alias, "*");
996 }
997 }
998 }
999
1000 strcat(alias, ":");
1001 return 1;
1002 }
1003 ADD_TO_DEVTABLE("dmi", dmi_system_id, do_dmi_entry);
1004
1005 static int do_platform_entry(const char *filename,
1006 void *symval, char *alias)
1007 {
1008 DEF_FIELD_ADDR(symval, platform_device_id, name);
1009 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name);
1010 return 1;
1011 }
1012 ADD_TO_DEVTABLE("platform", platform_device_id, do_platform_entry);
1013
1014 static int do_mdio_entry(const char *filename,
1015 void *symval, char *alias)
1016 {
1017 int i;
1018 DEF_FIELD(symval, mdio_device_id, phy_id);
1019 DEF_FIELD(symval, mdio_device_id, phy_id_mask);
1020
1021 alias += sprintf(alias, MDIO_MODULE_PREFIX);
1022
1023 for (i = 0; i < 32; i++) {
1024 if (!((phy_id_mask >> (31-i)) & 1))
1025 *(alias++) = '?';
1026 else if ((phy_id >> (31-i)) & 1)
1027 *(alias++) = '1';
1028 else
1029 *(alias++) = '0';
1030 }
1031
1032 /* Terminate the string */
1033 *alias = 0;
1034
1035 return 1;
1036 }
1037 ADD_TO_DEVTABLE("mdio", mdio_device_id, do_mdio_entry);
1038
1039 /* Looks like: zorro:iN. */
1040 static int do_zorro_entry(const char *filename, void *symval,
1041 char *alias)
1042 {
1043 DEF_FIELD(symval, zorro_device_id, id);
1044 strcpy(alias, "zorro:");
1045 ADD(alias, "i", id != ZORRO_WILDCARD, id);
1046 return 1;
1047 }
1048 ADD_TO_DEVTABLE("zorro", zorro_device_id, do_zorro_entry);
1049
1050 /* looks like: "pnp:dD" */
1051 static int do_isapnp_entry(const char *filename,
1052 void *symval, char *alias)
1053 {
1054 DEF_FIELD(symval, isapnp_device_id, vendor);
1055 DEF_FIELD(symval, isapnp_device_id, function);
1056 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
1057 'A' + ((vendor >> 2) & 0x3f) - 1,
1058 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
1059 'A' + ((vendor >> 8) & 0x1f) - 1,
1060 (function >> 4) & 0x0f, function & 0x0f,
1061 (function >> 12) & 0x0f, (function >> 8) & 0x0f);
1062 return 1;
1063 }
1064 ADD_TO_DEVTABLE("isapnp", isapnp_device_id, do_isapnp_entry);
1065
1066 /* Looks like: "ipack:fNvNdN". */
1067 static int do_ipack_entry(const char *filename,
1068 void *symval, char *alias)
1069 {
1070 DEF_FIELD(symval, ipack_device_id, format);
1071 DEF_FIELD(symval, ipack_device_id, vendor);
1072 DEF_FIELD(symval, ipack_device_id, device);
1073 strcpy(alias, "ipack:");
1074 ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
1075 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
1076 ADD(alias, "d", device != IPACK_ANY_ID, device);
1077 add_wildcard(alias);
1078 return 1;
1079 }
1080 ADD_TO_DEVTABLE("ipack", ipack_device_id, do_ipack_entry);
1081
1082 /*
1083 * Append a match expression for a single masked hex digit.
1084 * outp points to a pointer to the character at which to append.
1085 * *outp is updated on return to point just after the appended text,
1086 * to facilitate further appending.
1087 */
1088 static void append_nibble_mask(char **outp,
1089 unsigned int nibble, unsigned int mask)
1090 {
1091 char *p = *outp;
1092 unsigned int i;
1093
1094 switch (mask) {
1095 case 0:
1096 *p++ = '?';
1097 break;
1098
1099 case 0xf:
1100 p += sprintf(p, "%X", nibble);
1101 break;
1102
1103 default:
1104 /*
1105 * Dumbly emit a match pattern for all possible matching
1106 * digits. This could be improved in some cases using ranges,
1107 * but it has the advantage of being trivially correct, and is
1108 * often optimal.
1109 */
1110 *p++ = '[';
1111 for (i = 0; i < 0x10; i++)
1112 if ((i & mask) == nibble)
1113 p += sprintf(p, "%X", i);
1114 *p++ = ']';
1115 }
1116
1117 /* Ensure that the string remains NUL-terminated: */
1118 *p = '\0';
1119
1120 /* Advance the caller's end-of-string pointer: */
1121 *outp = p;
1122 }
1123
1124 /*
1125 * looks like: "amba:dN"
1126 *
1127 * N is exactly 8 digits, where each is an upper-case hex digit, or
1128 * a ? or [] pattern matching exactly one digit.
1129 */
1130 static int do_amba_entry(const char *filename,
1131 void *symval, char *alias)
1132 {
1133 unsigned int digit;
1134 char *p = alias;
1135 DEF_FIELD(symval, amba_id, id);
1136 DEF_FIELD(symval, amba_id, mask);
1137
1138 if ((id & mask) != id)
1139 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1140 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1141 filename, id, mask);
1142
1143 p += sprintf(alias, "amba:d");
1144 for (digit = 0; digit < 8; digit++)
1145 append_nibble_mask(&p,
1146 (id >> (4 * (7 - digit))) & 0xf,
1147 (mask >> (4 * (7 - digit))) & 0xf);
1148
1149 return 1;
1150 }
1151 ADD_TO_DEVTABLE("amba", amba_id, do_amba_entry);
1152
1153 /*
1154 * looks like: "mipscdmm:tN"
1155 *
1156 * N is exactly 2 digits, where each is an upper-case hex digit, or
1157 * a ? or [] pattern matching exactly one digit.
1158 */
1159 static int do_mips_cdmm_entry(const char *filename,
1160 void *symval, char *alias)
1161 {
1162 DEF_FIELD(symval, mips_cdmm_device_id, type);
1163
1164 sprintf(alias, "mipscdmm:t%02X*", type);
1165 return 1;
1166 }
1167 ADD_TO_DEVTABLE("mipscdmm", mips_cdmm_device_id, do_mips_cdmm_entry);
1168
1169 /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,*
1170 * All fields are numbers. It would be nicer to use strings for vendor
1171 * and feature, but getting those out of the build system here is too
1172 * complicated.
1173 */
1174
1175 static int do_x86cpu_entry(const char *filename, void *symval,
1176 char *alias)
1177 {
1178 DEF_FIELD(symval, x86_cpu_id, feature);
1179 DEF_FIELD(symval, x86_cpu_id, family);
1180 DEF_FIELD(symval, x86_cpu_id, model);
1181 DEF_FIELD(symval, x86_cpu_id, vendor);
1182
1183 strcpy(alias, "cpu:type:x86,");
1184 ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor);
1185 ADD(alias, "fam", family != X86_FAMILY_ANY, family);
1186 ADD(alias, "mod", model != X86_MODEL_ANY, model);
1187 strcat(alias, ":feature:*");
1188 if (feature != X86_FEATURE_ANY)
1189 sprintf(alias + strlen(alias), "%04X*", feature);
1190 return 1;
1191 }
1192 ADD_TO_DEVTABLE("x86cpu", x86_cpu_id, do_x86cpu_entry);
1193
1194 /* LOOKS like cpu:type:*:feature:*FEAT* */
1195 static int do_cpu_entry(const char *filename, void *symval, char *alias)
1196 {
1197 DEF_FIELD(symval, cpu_feature, feature);
1198
1199 sprintf(alias, "cpu:type:*:feature:*%04X*", feature);
1200 return 1;
1201 }
1202 ADD_TO_DEVTABLE("cpu", cpu_feature, do_cpu_entry);
1203
1204 /* Looks like: mei:S:uuid:N:* */
1205 static int do_mei_entry(const char *filename, void *symval,
1206 char *alias)
1207 {
1208 DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
1209 DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid);
1210 DEF_FIELD(symval, mei_cl_device_id, version);
1211
1212 sprintf(alias, MEI_CL_MODULE_PREFIX);
1213 sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*");
1214 add_uuid(alias, *uuid);
1215 ADD(alias, ":", version != MEI_CL_VERSION_ANY, version);
1216
1217 strcat(alias, ":*");
1218
1219 return 1;
1220 }
1221 ADD_TO_DEVTABLE("mei", mei_cl_device_id, do_mei_entry);
1222
1223 /* Looks like: rapidio:vNdNavNadN */
1224 static int do_rio_entry(const char *filename,
1225 void *symval, char *alias)
1226 {
1227 DEF_FIELD(symval, rio_device_id, did);
1228 DEF_FIELD(symval, rio_device_id, vid);
1229 DEF_FIELD(symval, rio_device_id, asm_did);
1230 DEF_FIELD(symval, rio_device_id, asm_vid);
1231
1232 strcpy(alias, "rapidio:");
1233 ADD(alias, "v", vid != RIO_ANY_ID, vid);
1234 ADD(alias, "d", did != RIO_ANY_ID, did);
1235 ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid);
1236 ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did);
1237
1238 add_wildcard(alias);
1239 return 1;
1240 }
1241 ADD_TO_DEVTABLE("rapidio", rio_device_id, do_rio_entry);
1242
1243 /* Looks like: ulpi:vNpN */
1244 static int do_ulpi_entry(const char *filename, void *symval,
1245 char *alias)
1246 {
1247 DEF_FIELD(symval, ulpi_device_id, vendor);
1248 DEF_FIELD(symval, ulpi_device_id, product);
1249
1250 sprintf(alias, "ulpi:v%04xp%04x", vendor, product);
1251
1252 return 1;
1253 }
1254 ADD_TO_DEVTABLE("ulpi", ulpi_device_id, do_ulpi_entry);
1255
1256 /* Looks like: hdaudio:vNrNaN */
1257 static int do_hda_entry(const char *filename, void *symval, char *alias)
1258 {
1259 DEF_FIELD(symval, hda_device_id, vendor_id);
1260 DEF_FIELD(symval, hda_device_id, rev_id);
1261 DEF_FIELD(symval, hda_device_id, api_version);
1262
1263 strcpy(alias, "hdaudio:");
1264 ADD(alias, "v", vendor_id != 0, vendor_id);
1265 ADD(alias, "r", rev_id != 0, rev_id);
1266 ADD(alias, "a", api_version != 0, api_version);
1267
1268 add_wildcard(alias);
1269 return 1;
1270 }
1271 ADD_TO_DEVTABLE("hdaudio", hda_device_id, do_hda_entry);
1272
1273 /* Does namelen bytes of name exactly match the symbol? */
1274 static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1275 {
1276 if (namelen != strlen(symbol))
1277 return false;
1278
1279 return memcmp(name, symbol, namelen) == 0;
1280 }
1281
1282 static void do_table(void *symval, unsigned long size,
1283 unsigned long id_size,
1284 const char *device_id,
1285 void *function,
1286 struct module *mod)
1287 {
1288 unsigned int i;
1289 char alias[500];
1290 int (*do_entry)(const char *, void *entry, char *alias) = function;
1291
1292 device_id_check(mod->name, device_id, size, id_size, symval);
1293 /* Leave last one: it's the terminator. */
1294 size -= id_size;
1295
1296 for (i = 0; i < size; i += id_size) {
1297 if (do_entry(mod->name, symval+i, alias)) {
1298 buf_printf(&mod->dev_table_buf,
1299 "MODULE_ALIAS(\"%s\");\n", alias);
1300 }
1301 }
1302 }
1303
1304 /* Create MODULE_ALIAS() statements.
1305 * At this time, we cannot write the actual output C source yet,
1306 * so we write into the mod->dev_table_buf buffer. */
1307 void handle_moddevtable(struct module *mod, struct elf_info *info,
1308 Elf_Sym *sym, const char *symname)
1309 {
1310 void *symval;
1311 char *zeros = NULL;
1312 const char *name, *identifier;
1313 unsigned int namelen;
1314
1315 /* We're looking for a section relative symbol */
1316 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1317 return;
1318
1319 /* We're looking for an object */
1320 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1321 return;
1322
1323 /* All our symbols are of form <prefix>__mod_<name>__<identifier>_device_table. */
1324 name = strstr(symname, "__mod_");
1325 if (!name)
1326 return;
1327 name += strlen("__mod_");
1328 namelen = strlen(name);
1329 if (namelen < strlen("_device_table"))
1330 return;
1331 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1332 return;
1333 identifier = strstr(name, "__");
1334 if (!identifier)
1335 return;
1336 namelen = identifier - name;
1337
1338 /* Handle all-NULL symbols allocated into .bss */
1339 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1340 zeros = calloc(1, sym->st_size);
1341 symval = zeros;
1342 } else {
1343 symval = (void *)info->hdr
1344 + info->sechdrs[get_secindex(info, sym)].sh_offset
1345 + sym->st_value;
1346 }
1347
1348 /* First handle the "special" cases */
1349 if (sym_is(name, namelen, "usb"))
1350 do_usb_table(symval, sym->st_size, mod);
1351 else if (sym_is(name, namelen, "pnp"))
1352 do_pnp_device_entry(symval, sym->st_size, mod);
1353 else if (sym_is(name, namelen, "pnp_card"))
1354 do_pnp_card_entries(symval, sym->st_size, mod);
1355 else {
1356 struct devtable **p;
1357 INIT_SECTION(__devtable);
1358
1359 for (p = __start___devtable; p < __stop___devtable; p++) {
1360 if (sym_is(name, namelen, (*p)->device_id)) {
1361 do_table(symval, sym->st_size, (*p)->id_size,
1362 (*p)->device_id, (*p)->function, mod);
1363 break;
1364 }
1365 }
1366 }
1367 free(zeros);
1368 }
1369
1370 /* Now add out buffered information to the generated C source */
1371 void add_moddevtable(struct buffer *buf, struct module *mod)
1372 {
1373 buf_printf(buf, "\n");
1374 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1375 free(mod->dev_table_buf.p);
1376 }
Linux kernel - Deliverables
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