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.
5 * Copyright 2002-2003 Rusty Russell, IBM Corporation
6 * 2003 Kai Germaschewski
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
14 #include "devicetable-offsets.h"
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
22 typedef Elf64_Addr kernel_ulong_t;
23 #define BITS_PER_LONG 64
34 typedef uint32_t __u32;
35 typedef uint16_t __u16;
36 typedef unsigned char __u8;
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"
43 /* This array collects all instances that use the generic do_table */
45 const char *device_id; /* name of table, __mod_<name>_device_table. */
46 unsigned long id_size;
50 #define ___cat(a,b) a ## b
51 #define __cat(a,b) ___cat(a,b)
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 */
59 #include <mach-o/getsect.h>
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) + \
67 __cat(__start_,name) = (void *)__cat(pstart_,name); \
68 __cat(__stop_,name) = (void *)__cat(pstop_,name); \
70 #define SECTION(name) __attribute__((section("__TEXT, " #name)))
72 struct devtable **__start___devtable, **__stop___devtable;
74 #define INIT_SECTION(name) /* no-op for ELF */
75 #define SECTION(name) __attribute__((section(#name)))
77 /* We construct a table of pointers in an ELF section (pointers generally
78 * go unpadded by gcc). ld creates boundary syms for us. */
79 extern struct devtable *__start___devtable[], *__stop___devtable[];
82 #if __GNUC__ == 3 && __GNUC_MINOR__ < 3
83 # define __used __attribute__((__unused__))
85 # define __used __attribute__((__used__))
88 /* Define a variable f that holds the value of field f of struct devid
91 #define DEF_FIELD(m, devid, f) \
92 typeof(((struct devid *)0)->f) f = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f))
93 /* Define a variable f that holds the address of field f of struct devid
94 * based at address m. Due to the way typeof works, for a field of type
95 * T[N] the variable has type T(*)[N], _not_ T*.
97 #define DEF_FIELD_ADDR(m, devid, f) \
98 typeof(((struct devid *)0)->f) *f = ((m) + OFF_##devid##_##f)
100 /* Add a table entry. We test function type matches while we're here. */
101 #define ADD_TO_DEVTABLE(device_id, type, function) \
102 static struct devtable __cat(devtable,__LINE__) = { \
103 device_id + 0*sizeof((function)((const char *)NULL, \
106 SIZE_##type, (function) }; \
107 static struct devtable *SECTION(__devtable) __used \
108 __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__)
110 #define ADD(str, sep, cond, field) \
114 sprintf(str + strlen(str), \
115 sizeof(field) == 1 ? "%02X" : \
116 sizeof(field) == 2 ? "%04X" : \
117 sizeof(field) == 4 ? "%08X" : "", \
120 sprintf(str + strlen(str), "*"); \
123 /* Always end in a wildcard, for future extension */
124 static inline void add_wildcard(char *str)
126 int len = strlen(str);
128 if (str[len - 1] != '*')
129 strcat(str + len, "*");
133 * Check that sizeof(device_id type) are consistent with size of section
134 * in .o file. If in-consistent then userspace and kernel does not agree
135 * on actual size which is a bug.
136 * Also verify that the final entry in the table is all zeros.
137 * Ignore both checks if build host differ from target host and size differs.
139 static void device_id_check(const char *modname, const char *device_id,
140 unsigned long size, unsigned long id_size,
145 if (size % id_size || size < id_size) {
146 fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
147 "of the size of section __mod_%s_device_table=%lu.\n"
148 "Fix definition of struct %s_device_id "
149 "in mod_devicetable.h\n",
150 modname, device_id, id_size, device_id, size, device_id);
152 /* Verify last one is a terminator */
153 for (i = 0; i < id_size; i++ ) {
154 if (*(uint8_t*)(symval+size-id_size+i)) {
155 fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
156 "The last of %lu is:\n",
157 modname, device_id, id_size, size / id_size);
158 for (i = 0; i < id_size; i++ )
159 fprintf(stderr,"0x%02x ",
160 *(uint8_t*)(symval+size-id_size+i) );
161 fprintf(stderr,"\n");
162 fatal("%s: struct %s_device_id is not terminated "
163 "with a NULL entry!\n", modname, device_id);
168 /* USB is special because the bcdDevice can be matched against a numeric range */
169 /* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
170 static void do_usb_entry(void *symval,
171 unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
172 unsigned char range_lo, unsigned char range_hi,
173 unsigned char max, struct module *mod)
176 DEF_FIELD(symval, usb_device_id, match_flags);
177 DEF_FIELD(symval, usb_device_id, idVendor);
178 DEF_FIELD(symval, usb_device_id, idProduct);
179 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
180 DEF_FIELD(symval, usb_device_id, bDeviceClass);
181 DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
182 DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
183 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
184 DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
185 DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
186 DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
188 strcpy(alias, "usb:");
189 ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
191 ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
195 if (bcdDevice_initial_digits)
196 sprintf(alias + strlen(alias), "%0*X",
197 bcdDevice_initial_digits, bcdDevice_initial);
198 if (range_lo == range_hi)
199 sprintf(alias + strlen(alias), "%X", range_lo);
200 else if (range_lo > 0 || range_hi < max) {
201 if (range_lo > 0x9 || range_hi < 0xA)
202 sprintf(alias + strlen(alias),
207 sprintf(alias + strlen(alias),
208 range_lo < 0x9 ? "[%X-9" : "[%X",
210 sprintf(alias + strlen(alias),
211 range_hi > 0xA ? "a-%X]" : "%X]",
215 if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
218 ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
220 ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
222 ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
224 ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
226 ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
228 ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
230 ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
234 buf_printf(&mod->dev_table_buf,
235 "MODULE_ALIAS(\"%s\");\n", alias);
238 /* Handles increment/decrement of BCD formatted integers */
239 /* Returns the previous value, so it works like i++ or i-- */
240 static unsigned int incbcd(unsigned int *bcd,
245 unsigned int init = *bcd, i, j;
246 unsigned long long c, dec = 0;
248 /* If bcd is not in BCD format, just increment */
254 /* Convert BCD to Decimal */
255 for (i=0 ; i < chars ; i++) {
256 c = (*bcd >> (i << 2)) & 0xf;
257 c = c > 9 ? 9 : c; /* force to bcd just in case */
258 for (j=0 ; j < i ; j++)
263 /* Do our increment/decrement */
267 /* Convert back to BCD */
268 for (i=0 ; i < chars ; i++) {
269 for (c=1,j=0 ; j < i ; j++)
272 *bcd += c << (i << 2);
277 static void do_usb_entry_multi(void *symval, struct module *mod)
279 unsigned int devlo, devhi;
280 unsigned char chi, clo, max;
283 DEF_FIELD(symval, usb_device_id, match_flags);
284 DEF_FIELD(symval, usb_device_id, idVendor);
285 DEF_FIELD(symval, usb_device_id, idProduct);
286 DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
287 DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
288 DEF_FIELD(symval, usb_device_id, bDeviceClass);
289 DEF_FIELD(symval, usb_device_id, bInterfaceClass);
291 devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
293 devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
294 bcdDevice_hi : ~0x0U;
296 /* Figure out if this entry is in bcd or hex format */
297 max = 0x9; /* Default to decimal format */
298 for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
299 clo = (devlo >> (ndigits << 2)) & 0xf;
300 chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
301 if (clo > max || chi > max) {
308 * Some modules (visor) have empty slots as placeholder for
309 * run-time specification that results in catch-all alias
311 if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
314 /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
315 for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
318 if (chi > max) /* If we are in bcd mode, truncate if necessary */
323 if (devlo == devhi || !ndigits) {
324 do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
330 incbcd(&devlo, 1, max,
331 sizeof(bcdDevice_lo) * 2),
332 ndigits, clo, max, max, mod);
336 incbcd(&devhi, -1, max,
337 sizeof(bcdDevice_lo) * 2),
338 ndigits, 0x0, chi, max, mod);
342 static void do_usb_table(void *symval, unsigned long size,
346 const unsigned long id_size = SIZE_usb_device_id;
348 device_id_check(mod->name, "usb", size, id_size, symval);
350 /* Leave last one: it's the terminator. */
353 for (i = 0; i < size; i += id_size)
354 do_usb_entry_multi(symval + i, mod);
357 /* Looks like: hid:bNvNpN */
358 static int do_hid_entry(const char *filename,
359 void *symval, char *alias)
361 DEF_FIELD(symval, hid_device_id, bus);
362 DEF_FIELD(symval, hid_device_id, group);
363 DEF_FIELD(symval, hid_device_id, vendor);
364 DEF_FIELD(symval, hid_device_id, product);
366 sprintf(alias, "hid:");
367 ADD(alias, "b", bus != HID_BUS_ANY, bus);
368 ADD(alias, "g", group != HID_GROUP_ANY, group);
369 ADD(alias, "v", vendor != HID_ANY_ID, vendor);
370 ADD(alias, "p", product != HID_ANY_ID, product);
374 ADD_TO_DEVTABLE("hid", hid_device_id, do_hid_entry);
376 /* Looks like: ieee1394:venNmoNspNverN */
377 static int do_ieee1394_entry(const char *filename,
378 void *symval, char *alias)
380 DEF_FIELD(symval, ieee1394_device_id, match_flags);
381 DEF_FIELD(symval, ieee1394_device_id, vendor_id);
382 DEF_FIELD(symval, ieee1394_device_id, model_id);
383 DEF_FIELD(symval, ieee1394_device_id, specifier_id);
384 DEF_FIELD(symval, ieee1394_device_id, version);
386 strcpy(alias, "ieee1394:");
387 ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
389 ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
391 ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
393 ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
399 ADD_TO_DEVTABLE("ieee1394", ieee1394_device_id, do_ieee1394_entry);
401 /* Looks like: pci:vNdNsvNsdNbcNscNiN. */
402 static int do_pci_entry(const char *filename,
403 void *symval, char *alias)
405 /* Class field can be divided into these three. */
406 unsigned char baseclass, subclass, interface,
407 baseclass_mask, subclass_mask, interface_mask;
409 DEF_FIELD(symval, pci_device_id, vendor);
410 DEF_FIELD(symval, pci_device_id, device);
411 DEF_FIELD(symval, pci_device_id, subvendor);
412 DEF_FIELD(symval, pci_device_id, subdevice);
413 DEF_FIELD(symval, pci_device_id, class);
414 DEF_FIELD(symval, pci_device_id, class_mask);
416 strcpy(alias, "pci:");
417 ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
418 ADD(alias, "d", device != PCI_ANY_ID, device);
419 ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
420 ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
422 baseclass = (class) >> 16;
423 baseclass_mask = (class_mask) >> 16;
424 subclass = (class) >> 8;
425 subclass_mask = (class_mask) >> 8;
427 interface_mask = class_mask;
429 if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
430 || (subclass_mask != 0 && subclass_mask != 0xFF)
431 || (interface_mask != 0 && interface_mask != 0xFF)) {
432 warn("Can't handle masks in %s:%04X\n",
433 filename, class_mask);
437 ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
438 ADD(alias, "sc", subclass_mask == 0xFF, subclass);
439 ADD(alias, "i", interface_mask == 0xFF, interface);
443 ADD_TO_DEVTABLE("pci", pci_device_id, do_pci_entry);
445 /* looks like: "ccw:tNmNdtNdmN" */
446 static int do_ccw_entry(const char *filename,
447 void *symval, char *alias)
449 DEF_FIELD(symval, ccw_device_id, match_flags);
450 DEF_FIELD(symval, ccw_device_id, cu_type);
451 DEF_FIELD(symval, ccw_device_id, cu_model);
452 DEF_FIELD(symval, ccw_device_id, dev_type);
453 DEF_FIELD(symval, ccw_device_id, dev_model);
455 strcpy(alias, "ccw:");
456 ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
458 ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
460 ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
462 ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
467 ADD_TO_DEVTABLE("ccw", ccw_device_id, do_ccw_entry);
469 /* looks like: "ap:tN" */
470 static int do_ap_entry(const char *filename,
471 void *symval, char *alias)
473 DEF_FIELD(symval, ap_device_id, dev_type);
475 sprintf(alias, "ap:t%02X*", dev_type);
478 ADD_TO_DEVTABLE("ap", ap_device_id, do_ap_entry);
480 /* looks like: "css:tN" */
481 static int do_css_entry(const char *filename,
482 void *symval, char *alias)
484 DEF_FIELD(symval, css_device_id, type);
486 sprintf(alias, "css:t%01X", type);
489 ADD_TO_DEVTABLE("css", css_device_id, do_css_entry);
491 /* Looks like: "serio:tyNprNidNexN" */
492 static int do_serio_entry(const char *filename,
493 void *symval, char *alias)
495 DEF_FIELD(symval, serio_device_id, type);
496 DEF_FIELD(symval, serio_device_id, proto);
497 DEF_FIELD(symval, serio_device_id, id);
498 DEF_FIELD(symval, serio_device_id, extra);
500 strcpy(alias, "serio:");
501 ADD(alias, "ty", type != SERIO_ANY, type);
502 ADD(alias, "pr", proto != SERIO_ANY, proto);
503 ADD(alias, "id", id != SERIO_ANY, id);
504 ADD(alias, "ex", extra != SERIO_ANY, extra);
509 ADD_TO_DEVTABLE("serio", serio_device_id, do_serio_entry);
511 /* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */
512 static int do_acpi_entry(const char *filename,
513 void *symval, char *alias)
515 DEF_FIELD_ADDR(symval, acpi_device_id, id);
516 sprintf(alias, "acpi*:%s:*", *id);
519 ADD_TO_DEVTABLE("acpi", acpi_device_id, do_acpi_entry);
521 /* looks like: "pnp:dD" */
522 static void do_pnp_device_entry(void *symval, unsigned long size,
525 const unsigned long id_size = SIZE_pnp_device_id;
526 const unsigned int count = (size / id_size)-1;
529 device_id_check(mod->name, "pnp", size, id_size, symval);
531 for (i = 0; i < count; i++) {
532 DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id);
533 char acpi_id[sizeof(*id)];
536 buf_printf(&mod->dev_table_buf,
537 "MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
539 /* fix broken pnp bus lowercasing */
540 for (j = 0; j < sizeof(acpi_id); j++)
541 acpi_id[j] = toupper((*id)[j]);
542 buf_printf(&mod->dev_table_buf,
543 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
547 /* looks like: "pnp:dD" for every device of the card */
548 static void do_pnp_card_entries(void *symval, unsigned long size,
551 const unsigned long id_size = SIZE_pnp_card_device_id;
552 const unsigned int count = (size / id_size)-1;
555 device_id_check(mod->name, "pnp", size, id_size, symval);
557 for (i = 0; i < count; i++) {
559 DEF_FIELD_ADDR(symval + i*id_size, pnp_card_device_id, devs);
561 for (j = 0; j < PNP_MAX_DEVICES; j++) {
562 const char *id = (char *)(*devs)[j].id;
569 /* find duplicate, already added value */
570 for (i2 = 0; i2 < i && !dup; i2++) {
571 DEF_FIELD_ADDR(symval + i2*id_size, pnp_card_device_id, devs);
573 for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
574 const char *id2 = (char *)(*devs)[j2].id;
579 if (!strcmp(id, id2)) {
586 /* add an individual alias for every device entry */
588 char acpi_id[PNP_ID_LEN];
591 buf_printf(&mod->dev_table_buf,
592 "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
594 /* fix broken pnp bus lowercasing */
595 for (k = 0; k < sizeof(acpi_id); k++)
596 acpi_id[k] = toupper(id[k]);
597 buf_printf(&mod->dev_table_buf,
598 "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
604 /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
605 static int do_pcmcia_entry(const char *filename,
606 void *symval, char *alias)
609 DEF_FIELD(symval, pcmcia_device_id, match_flags);
610 DEF_FIELD(symval, pcmcia_device_id, manf_id);
611 DEF_FIELD(symval, pcmcia_device_id, card_id);
612 DEF_FIELD(symval, pcmcia_device_id, func_id);
613 DEF_FIELD(symval, pcmcia_device_id, function);
614 DEF_FIELD(symval, pcmcia_device_id, device_no);
615 DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
617 for (i=0; i<4; i++) {
618 (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]);
621 strcpy(alias, "pcmcia:");
622 ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
624 ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
626 ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
628 ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
630 ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
632 ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, (*prod_id_hash)[0]);
633 ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]);
634 ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]);
635 ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]);
640 ADD_TO_DEVTABLE("pcmcia", pcmcia_device_id, do_pcmcia_entry);
642 static int do_of_entry (const char *filename, void *symval, char *alias)
646 DEF_FIELD_ADDR(symval, of_device_id, name);
647 DEF_FIELD_ADDR(symval, of_device_id, type);
648 DEF_FIELD_ADDR(symval, of_device_id, compatible);
650 len = sprintf (alias, "of:N%sT%s",
651 (*name)[0] ? *name : "*",
652 (*type)[0] ? *type : "*");
655 sprintf (&alias[len], "%sC%s",
656 (*type)[0] ? "*" : "",
659 /* Replace all whitespace with underscores */
660 for (tmp = alias; tmp && *tmp; tmp++)
667 ADD_TO_DEVTABLE("of", of_device_id, do_of_entry);
669 static int do_vio_entry(const char *filename, void *symval,
673 DEF_FIELD_ADDR(symval, vio_device_id, type);
674 DEF_FIELD_ADDR(symval, vio_device_id, compat);
676 sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
677 (*compat)[0] ? *compat : "*");
679 /* Replace all whitespace with underscores */
680 for (tmp = alias; tmp && *tmp; tmp++)
687 ADD_TO_DEVTABLE("vio", vio_device_id, do_vio_entry);
689 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
691 static void do_input(char *alias,
692 kernel_ulong_t *arr, unsigned int min, unsigned int max)
696 for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++)
697 arr[i] = TO_NATIVE(arr[i]);
698 for (i = min; i < max; i++)
699 if (arr[i / BITS_PER_LONG] & (1L << (i%BITS_PER_LONG)))
700 sprintf(alias + strlen(alias), "%X,*", i);
703 /* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
704 static int do_input_entry(const char *filename, void *symval,
707 DEF_FIELD(symval, input_device_id, flags);
708 DEF_FIELD(symval, input_device_id, bustype);
709 DEF_FIELD(symval, input_device_id, vendor);
710 DEF_FIELD(symval, input_device_id, product);
711 DEF_FIELD(symval, input_device_id, version);
712 DEF_FIELD_ADDR(symval, input_device_id, evbit);
713 DEF_FIELD_ADDR(symval, input_device_id, keybit);
714 DEF_FIELD_ADDR(symval, input_device_id, relbit);
715 DEF_FIELD_ADDR(symval, input_device_id, absbit);
716 DEF_FIELD_ADDR(symval, input_device_id, mscbit);
717 DEF_FIELD_ADDR(symval, input_device_id, ledbit);
718 DEF_FIELD_ADDR(symval, input_device_id, sndbit);
719 DEF_FIELD_ADDR(symval, input_device_id, ffbit);
720 DEF_FIELD_ADDR(symval, input_device_id, swbit);
722 sprintf(alias, "input:");
724 ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
725 ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
726 ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
727 ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
729 sprintf(alias + strlen(alias), "-e*");
730 if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
731 do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
732 sprintf(alias + strlen(alias), "k*");
733 if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
734 do_input(alias, *keybit,
735 INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
736 INPUT_DEVICE_ID_KEY_MAX);
737 sprintf(alias + strlen(alias), "r*");
738 if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
739 do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
740 sprintf(alias + strlen(alias), "a*");
741 if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
742 do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
743 sprintf(alias + strlen(alias), "m*");
744 if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
745 do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
746 sprintf(alias + strlen(alias), "l*");
747 if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
748 do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
749 sprintf(alias + strlen(alias), "s*");
750 if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
751 do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
752 sprintf(alias + strlen(alias), "f*");
753 if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
754 do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
755 sprintf(alias + strlen(alias), "w*");
756 if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
757 do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
760 ADD_TO_DEVTABLE("input", input_device_id, do_input_entry);
762 static int do_eisa_entry(const char *filename, void *symval,
765 DEF_FIELD_ADDR(symval, eisa_device_id, sig);
767 sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig);
772 ADD_TO_DEVTABLE("eisa", eisa_device_id, do_eisa_entry);
774 /* Looks like: parisc:tNhvNrevNsvN */
775 static int do_parisc_entry(const char *filename, void *symval,
778 DEF_FIELD(symval, parisc_device_id, hw_type);
779 DEF_FIELD(symval, parisc_device_id, hversion);
780 DEF_FIELD(symval, parisc_device_id, hversion_rev);
781 DEF_FIELD(symval, parisc_device_id, sversion);
783 strcpy(alias, "parisc:");
784 ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
785 ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
786 ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
787 ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
792 ADD_TO_DEVTABLE("parisc", parisc_device_id, do_parisc_entry);
794 /* Looks like: sdio:cNvNdN. */
795 static int do_sdio_entry(const char *filename,
796 void *symval, char *alias)
798 DEF_FIELD(symval, sdio_device_id, class);
799 DEF_FIELD(symval, sdio_device_id, vendor);
800 DEF_FIELD(symval, sdio_device_id, device);
802 strcpy(alias, "sdio:");
803 ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
804 ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
805 ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
809 ADD_TO_DEVTABLE("sdio", sdio_device_id, do_sdio_entry);
811 /* Looks like: ssb:vNidNrevN. */
812 static int do_ssb_entry(const char *filename,
813 void *symval, char *alias)
815 DEF_FIELD(symval, ssb_device_id, vendor);
816 DEF_FIELD(symval, ssb_device_id, coreid);
817 DEF_FIELD(symval, ssb_device_id, revision);
819 strcpy(alias, "ssb:");
820 ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
821 ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
822 ADD(alias, "rev", revision != SSB_ANY_REV, revision);
826 ADD_TO_DEVTABLE("ssb", ssb_device_id, do_ssb_entry);
828 /* Looks like: bcma:mNidNrevNclN. */
829 static int do_bcma_entry(const char *filename,
830 void *symval, char *alias)
832 DEF_FIELD(symval, bcma_device_id, manuf);
833 DEF_FIELD(symval, bcma_device_id, id);
834 DEF_FIELD(symval, bcma_device_id, rev);
835 DEF_FIELD(symval, bcma_device_id, class);
837 strcpy(alias, "bcma:");
838 ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
839 ADD(alias, "id", id != BCMA_ANY_ID, id);
840 ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
841 ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
845 ADD_TO_DEVTABLE("bcma", bcma_device_id, do_bcma_entry);
847 /* Looks like: virtio:dNvN */
848 static int do_virtio_entry(const char *filename, void *symval,
851 DEF_FIELD(symval, virtio_device_id, device);
852 DEF_FIELD(symval, virtio_device_id, vendor);
854 strcpy(alias, "virtio:");
855 ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
856 ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
861 ADD_TO_DEVTABLE("virtio", virtio_device_id, do_virtio_entry);
864 * Looks like: vmbus:guid
865 * Each byte of the guid will be represented by two hex characters
869 static int do_vmbus_entry(const char *filename, void *symval,
873 DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
874 char guid_name[(sizeof(*guid) + 1) * 2];
876 for (i = 0; i < (sizeof(*guid) * 2); i += 2)
877 sprintf(&guid_name[i], "%02x", TO_NATIVE((*guid)[i/2]));
879 strcpy(alias, "vmbus:");
880 strcat(alias, guid_name);
884 ADD_TO_DEVTABLE("vmbus", hv_vmbus_device_id, do_vmbus_entry);
886 /* Looks like: i2c:S */
887 static int do_i2c_entry(const char *filename, void *symval,
890 DEF_FIELD_ADDR(symval, i2c_device_id, name);
891 sprintf(alias, I2C_MODULE_PREFIX "%s", *name);
895 ADD_TO_DEVTABLE("i2c", i2c_device_id, do_i2c_entry);
897 /* Looks like: spi:S */
898 static int do_spi_entry(const char *filename, void *symval,
901 DEF_FIELD_ADDR(symval, spi_device_id, name);
902 sprintf(alias, SPI_MODULE_PREFIX "%s", *name);
906 ADD_TO_DEVTABLE("spi", spi_device_id, do_spi_entry);
908 static const struct dmifield {
912 { "bvn", DMI_BIOS_VENDOR },
913 { "bvr", DMI_BIOS_VERSION },
914 { "bd", DMI_BIOS_DATE },
915 { "svn", DMI_SYS_VENDOR },
916 { "pn", DMI_PRODUCT_NAME },
917 { "pvr", DMI_PRODUCT_VERSION },
918 { "rvn", DMI_BOARD_VENDOR },
919 { "rn", DMI_BOARD_NAME },
920 { "rvr", DMI_BOARD_VERSION },
921 { "cvn", DMI_CHASSIS_VENDOR },
922 { "ct", DMI_CHASSIS_TYPE },
923 { "cvr", DMI_CHASSIS_VERSION },
927 static void dmi_ascii_filter(char *d, const char *s)
929 /* Filter out characters we don't want to see in the modalias string */
931 if (*s > ' ' && *s < 127 && *s != ':')
938 static int do_dmi_entry(const char *filename, void *symval,
942 DEF_FIELD_ADDR(symval, dmi_system_id, matches);
943 sprintf(alias, "dmi*");
945 for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
946 for (j = 0; j < 4; j++) {
947 if ((*matches)[j].slot &&
948 (*matches)[j].slot == dmi_fields[i].field) {
949 sprintf(alias + strlen(alias), ":%s*",
950 dmi_fields[i].prefix);
951 dmi_ascii_filter(alias + strlen(alias),
952 (*matches)[j].substr);
961 ADD_TO_DEVTABLE("dmi", dmi_system_id, do_dmi_entry);
963 static int do_platform_entry(const char *filename,
964 void *symval, char *alias)
966 DEF_FIELD_ADDR(symval, platform_device_id, name);
967 sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name);
970 ADD_TO_DEVTABLE("platform", platform_device_id, do_platform_entry);
972 static int do_mdio_entry(const char *filename,
973 void *symval, char *alias)
976 DEF_FIELD(symval, mdio_device_id, phy_id);
977 DEF_FIELD(symval, mdio_device_id, phy_id_mask);
979 alias += sprintf(alias, MDIO_MODULE_PREFIX);
981 for (i = 0; i < 32; i++) {
982 if (!((phy_id_mask >> (31-i)) & 1))
984 else if ((phy_id >> (31-i)) & 1)
990 /* Terminate the string */
995 ADD_TO_DEVTABLE("mdio", mdio_device_id, do_mdio_entry);
997 /* Looks like: zorro:iN. */
998 static int do_zorro_entry(const char *filename, void *symval,
1001 DEF_FIELD(symval, zorro_device_id, id);
1002 strcpy(alias, "zorro:");
1003 ADD(alias, "i", id != ZORRO_WILDCARD, id);
1006 ADD_TO_DEVTABLE("zorro", zorro_device_id, do_zorro_entry);
1008 /* looks like: "pnp:dD" */
1009 static int do_isapnp_entry(const char *filename,
1010 void *symval, char *alias)
1012 DEF_FIELD(symval, isapnp_device_id, vendor);
1013 DEF_FIELD(symval, isapnp_device_id, function);
1014 sprintf(alias, "pnp:d%c%c%c%x%x%x%x*",
1015 'A' + ((vendor >> 2) & 0x3f) - 1,
1016 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
1017 'A' + ((vendor >> 8) & 0x1f) - 1,
1018 (function >> 4) & 0x0f, function & 0x0f,
1019 (function >> 12) & 0x0f, (function >> 8) & 0x0f);
1022 ADD_TO_DEVTABLE("isapnp", isapnp_device_id, do_isapnp_entry);
1024 /* Looks like: "ipack:fNvNdN". */
1025 static int do_ipack_entry(const char *filename,
1026 void *symval, char *alias)
1028 DEF_FIELD(symval, ipack_device_id, format);
1029 DEF_FIELD(symval, ipack_device_id, vendor);
1030 DEF_FIELD(symval, ipack_device_id, device);
1031 strcpy(alias, "ipack:");
1032 ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
1033 ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
1034 ADD(alias, "d", device != IPACK_ANY_ID, device);
1035 add_wildcard(alias);
1038 ADD_TO_DEVTABLE("ipack", ipack_device_id, do_ipack_entry);
1041 * Append a match expression for a single masked hex digit.
1042 * outp points to a pointer to the character at which to append.
1043 * *outp is updated on return to point just after the appended text,
1044 * to facilitate further appending.
1046 static void append_nibble_mask(char **outp,
1047 unsigned int nibble, unsigned int mask)
1058 p += sprintf(p, "%X", nibble);
1063 * Dumbly emit a match pattern for all possible matching
1064 * digits. This could be improved in some cases using ranges,
1065 * but it has the advantage of being trivially correct, and is
1069 for (i = 0; i < 0x10; i++)
1070 if ((i & mask) == nibble)
1071 p += sprintf(p, "%X", i);
1075 /* Ensure that the string remains NUL-terminated: */
1078 /* Advance the caller's end-of-string pointer: */
1083 * looks like: "amba:dN"
1085 * N is exactly 8 digits, where each is an upper-case hex digit, or
1086 * a ? or [] pattern matching exactly one digit.
1088 static int do_amba_entry(const char *filename,
1089 void *symval, char *alias)
1093 DEF_FIELD(symval, amba_id, id);
1094 DEF_FIELD(symval, amba_id, mask);
1096 if ((id & mask) != id)
1097 fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: "
1098 "id=0x%08X, mask=0x%08X. Please fix this driver.\n",
1099 filename, id, mask);
1101 p += sprintf(alias, "amba:d");
1102 for (digit = 0; digit < 8; digit++)
1103 append_nibble_mask(&p,
1104 (id >> (4 * (7 - digit))) & 0xf,
1105 (mask >> (4 * (7 - digit))) & 0xf);
1109 ADD_TO_DEVTABLE("amba", amba_id, do_amba_entry);
1111 /* LOOKS like x86cpu:vendor:VVVV:family:FFFF:model:MMMM:feature:*,FEAT,*
1112 * All fields are numbers. It would be nicer to use strings for vendor
1113 * and feature, but getting those out of the build system here is too
1117 static int do_x86cpu_entry(const char *filename, void *symval,
1120 DEF_FIELD(symval, x86_cpu_id, feature);
1121 DEF_FIELD(symval, x86_cpu_id, family);
1122 DEF_FIELD(symval, x86_cpu_id, model);
1123 DEF_FIELD(symval, x86_cpu_id, vendor);
1125 strcpy(alias, "x86cpu:");
1126 ADD(alias, "vendor:", vendor != X86_VENDOR_ANY, vendor);
1127 ADD(alias, ":family:", family != X86_FAMILY_ANY, family);
1128 ADD(alias, ":model:", model != X86_MODEL_ANY, model);
1129 strcat(alias, ":feature:*");
1130 if (feature != X86_FEATURE_ANY)
1131 sprintf(alias + strlen(alias), "%04X*", feature);
1134 ADD_TO_DEVTABLE("x86cpu", x86_cpu_id, do_x86cpu_entry);
1136 /* Looks like: mei:S */
1137 static int do_mei_entry(const char *filename, void *symval,
1140 DEF_FIELD_ADDR(symval, mei_cl_device_id, name);
1142 sprintf(alias, MEI_CL_MODULE_PREFIX "%s", *name);
1146 ADD_TO_DEVTABLE("mei", mei_cl_device_id, do_mei_entry);
1148 /* Does namelen bytes of name exactly match the symbol? */
1149 static bool sym_is(const char *name, unsigned namelen, const char *symbol)
1151 if (namelen != strlen(symbol))
1154 return memcmp(name, symbol, namelen) == 0;
1157 static void do_table(void *symval, unsigned long size,
1158 unsigned long id_size,
1159 const char *device_id,
1165 int (*do_entry)(const char *, void *entry, char *alias) = function;
1167 device_id_check(mod->name, device_id, size, id_size, symval);
1168 /* Leave last one: it's the terminator. */
1171 for (i = 0; i < size; i += id_size) {
1172 if (do_entry(mod->name, symval+i, alias)) {
1173 buf_printf(&mod->dev_table_buf,
1174 "MODULE_ALIAS(\"%s\");\n", alias);
1179 /* Create MODULE_ALIAS() statements.
1180 * At this time, we cannot write the actual output C source yet,
1181 * so we write into the mod->dev_table_buf buffer. */
1182 void handle_moddevtable(struct module *mod, struct elf_info *info,
1183 Elf_Sym *sym, const char *symname)
1188 unsigned int namelen;
1190 /* We're looking for a section relative symbol */
1191 if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections)
1194 /* We're looking for an object */
1195 if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT)
1198 /* All our symbols are of form <prefix>__mod_XXX_device_table. */
1199 name = strstr(symname, "__mod_");
1202 name += strlen("__mod_");
1203 namelen = strlen(name);
1204 if (namelen < strlen("_device_table"))
1206 if (strcmp(name + namelen - strlen("_device_table"), "_device_table"))
1208 namelen -= strlen("_device_table");
1210 /* Handle all-NULL symbols allocated into .bss */
1211 if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) {
1212 zeros = calloc(1, sym->st_size);
1215 symval = (void *)info->hdr
1216 + info->sechdrs[get_secindex(info, sym)].sh_offset
1220 /* First handle the "special" cases */
1221 if (sym_is(name, namelen, "usb"))
1222 do_usb_table(symval, sym->st_size, mod);
1223 else if (sym_is(name, namelen, "pnp"))
1224 do_pnp_device_entry(symval, sym->st_size, mod);
1225 else if (sym_is(name, namelen, "pnp_card"))
1226 do_pnp_card_entries(symval, sym->st_size, mod);
1228 struct devtable **p;
1229 INIT_SECTION(__devtable);
1231 for (p = __start___devtable; p < __stop___devtable; p++) {
1232 if (sym_is(name, namelen, (*p)->device_id)) {
1233 do_table(symval, sym->st_size, (*p)->id_size,
1234 (*p)->device_id, (*p)->function, mod);
1242 /* Now add out buffered information to the generated C source */
1243 void add_moddevtable(struct buffer *buf, struct module *mod)
1245 buf_printf(buf, "\n");
1246 buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos);
1247 free(mod->dev_table_buf.p);