sprintf(str + strlen(str), "*"); \
} while(0)
+unsigned int cross_build = 0;
/**
* Check that sizeof(device_id type) are consistent with size of section
* in .o file. If in-consistent then userspace and kernel does not agree
* on actual size which is a bug.
+ * Also verify that the final entry in the table is all zeros.
+ * Ignore both checks if build host differ from target host and size differs.
**/
-static void device_id_size_check(const char *modname, const char *device_id,
- unsigned long size, unsigned long id_size)
+static void device_id_check(const char *modname, const char *device_id,
+ unsigned long size, unsigned long id_size,
+ void *symval)
{
+ int i;
+
if (size % id_size || size < id_size) {
+ if (cross_build != 0)
+ return;
fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo "
"of the size of section __mod_%s_device_table=%lu.\n"
"Fix definition of struct %s_device_id "
"in mod_devicetable.h\n",
modname, device_id, id_size, device_id, size, device_id);
}
+ /* Verify last one is a terminator */
+ for (i = 0; i < id_size; i++ ) {
+ if (*(uint8_t*)(symval+size-id_size+i)) {
+ fprintf(stderr,"%s: struct %s_device_id is %lu bytes. "
+ "The last of %lu is:\n",
+ modname, device_id, id_size, size / id_size);
+ for (i = 0; i < id_size; i++ )
+ fprintf(stderr,"0x%02x ",
+ *(uint8_t*)(symval+size-id_size+i) );
+ fprintf(stderr,"\n");
+ fatal("%s: struct %s_device_id is not terminated "
+ "with a NULL entry!\n", modname, device_id);
+ }
+ }
}
/* USB is special because the bcdDevice can be matched against a numeric range */
* Some modules (visor) have empty slots as placeholder for
* run-time specification that results in catch-all alias
*/
- if (!(id->idVendor | id->bDeviceClass | id->bInterfaceClass))
+ if (!(id->idVendor | id->idProduct | id->bDeviceClass | id->bInterfaceClass))
return;
/* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
unsigned int i;
const unsigned long id_size = sizeof(struct usb_device_id);
- device_id_size_check(mod->name, "usb", size, id_size);
+ device_id_check(mod->name, "usb", size, id_size, symval);
/* Leave last one: it's the terminator. */
size -= id_size;
return 1;
}
-/* looks like: "pnp:cCdD..." */
-static int do_pnp_card_entry(const char *filename,
- struct pnp_card_device_id *id, char *alias)
+/* looks like: "pnp:dD" for every device of the card */
+static void do_pnp_card_entries(void *symval, unsigned long size,
+ struct module *mod)
{
- int i;
+ const unsigned long id_size = sizeof(struct pnp_card_device_id);
+ const unsigned int count = (size / id_size)-1;
+ const struct pnp_card_device_id *cards = symval;
+ unsigned int i;
- sprintf(alias, "pnp:c%s", id->id);
- for (i = 0; i < PNP_MAX_DEVICES; i++) {
- if (! *id->devs[i].id)
- break;
- sprintf(alias + strlen(alias), "d%s", id->devs[i].id);
+ device_id_check(mod->name, "pnp", size, id_size, symval);
+
+ for (i = 0; i < count; i++) {
+ unsigned int j;
+ const struct pnp_card_device_id *card = &cards[i];
+
+ for (j = 0; j < PNP_MAX_DEVICES; j++) {
+ const char *id = (char *)card->devs[j].id;
+ int i2, j2;
+ int dup = 0;
+
+ if (!id[0])
+ break;
+
+ /* find duplicate, already added value */
+ for (i2 = 0; i2 < i && !dup; i2++) {
+ const struct pnp_card_device_id *card2 = &cards[i2];
+
+ for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) {
+ const char *id2 = (char *)card2->devs[j2].id;
+
+ if (!id2[0])
+ break;
+
+ if (!strcmp(id, id2)) {
+ dup = 1;
+ break;
+ }
+ }
+ }
+
+ /* add an individual alias for every device entry */
+ if (!dup)
+ buf_printf(&mod->dev_table_buf,
+ "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
+ }
}
- return 1;
}
/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
return 1;
}
+/* Looks like: virtio:dNvN */
+static int do_virtio_entry(const char *filename, struct virtio_device_id *id,
+ char *alias)
+{
+ id->device = TO_NATIVE(id->device);
+ id->vendor = TO_NATIVE(id->vendor);
+
+ strcpy(alias, "virtio:");
+ ADD(alias, "d", 1, id->device);
+ ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor);
+
+ return 1;
+}
+
/* Ignore any prefix, eg. v850 prepends _ */
static inline int sym_is(const char *symbol, const char *name)
{
char alias[500];
int (*do_entry)(const char *, void *entry, char *alias) = function;
- device_id_size_check(mod->name, device_id, size, id_size);
+ device_id_check(mod->name, device_id, size, id_size, symval);
/* Leave last one: it's the terminator. */
size -= id_size;
Elf_Sym *sym, const char *symname)
{
void *symval;
+ char *zeros = NULL;
/* We're looking for a section relative symbol */
if (!sym->st_shndx || sym->st_shndx >= info->hdr->e_shnum)
return;
- symval = (void *)info->hdr
- + info->sechdrs[sym->st_shndx].sh_offset
- + sym->st_value;
+ /* Handle all-NULL symbols allocated into .bss */
+ if (info->sechdrs[sym->st_shndx].sh_type & SHT_NOBITS) {
+ zeros = calloc(1, sym->st_size);
+ symval = zeros;
+ } else {
+ symval = (void *)info->hdr
+ + info->sechdrs[sym->st_shndx].sh_offset
+ + sym->st_value;
+ }
if (sym_is(symname, "__mod_pci_device_table"))
do_table(symval, sym->st_size,
sizeof(struct pnp_device_id), "pnp",
do_pnp_entry, mod);
else if (sym_is(symname, "__mod_pnp_card_device_table"))
- do_table(symval, sym->st_size,
- sizeof(struct pnp_card_device_id), "pnp_card",
- do_pnp_card_entry, mod);
+ do_pnp_card_entries(symval, sym->st_size, mod);
else if (sym_is(symname, "__mod_pcmcia_device_table"))
do_table(symval, sym->st_size,
sizeof(struct pcmcia_device_id), "pcmcia",
do_table(symval, sym->st_size,
sizeof(struct ssb_device_id), "ssb",
do_ssb_entry, mod);
+ else if (sym_is(symname, "__mod_virtio_device_table"))
+ do_table(symval, sym->st_size,
+ sizeof(struct virtio_device_id), "virtio",
+ do_virtio_entry, mod);
+ free(zeros);
}
/* Now add out buffered information to the generated C source */
projects / linux-2.6 / blobdiff