diff options
| -rw-r--r-- | scripts/mod/file2alias.c | 111 |
1 files changed, 88 insertions, 23 deletions
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index d54b52d3bb6f..32197efe67ed 100644 --- a/scripts/mod/file2alias.c +++ b/scripts/mod/file2alias.c @@ -47,32 +47,31 @@ do { \ sprintf(str + strlen(str), "*"); \ } while(0) -/* Looks like "usb:vNpNdlNdhNdcNdscNdpNicNiscNipN" */ -static int do_usb_entry(const char *filename, - struct usb_device_id *id, char *alias) +/* USB is special because the bcdDevice can be matched against a numeric range */ +/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipN" */ +static void do_usb_entry(struct usb_device_id *id, + unsigned int bcdDevice_initial, int bcdDevice_initial_digits, + unsigned char range_lo, unsigned char range_hi, + struct module *mod) { - id->match_flags = TO_NATIVE(id->match_flags); - id->idVendor = TO_NATIVE(id->idVendor); - id->idProduct = TO_NATIVE(id->idProduct); - id->bcdDevice_lo = TO_NATIVE(id->bcdDevice_lo); - id->bcdDevice_hi = TO_NATIVE(id->bcdDevice_hi); - - /* - * 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)) - return 1; - + char alias[500]; strcpy(alias, "usb:"); ADD(alias, "v", id->match_flags&USB_DEVICE_ID_MATCH_VENDOR, id->idVendor); ADD(alias, "p", id->match_flags&USB_DEVICE_ID_MATCH_PRODUCT, id->idProduct); - ADD(alias, "dl", id->match_flags&USB_DEVICE_ID_MATCH_DEV_LO, - id->bcdDevice_lo); - ADD(alias, "dh", id->match_flags&USB_DEVICE_ID_MATCH_DEV_HI, - id->bcdDevice_hi); + + strcat(alias, "d"); + if (bcdDevice_initial_digits) + sprintf(alias + strlen(alias), "%0*X", + bcdDevice_initial_digits, bcdDevice_initial); + if (range_lo == range_hi) + sprintf(alias + strlen(alias), "%u", range_lo); + else if (range_lo > 0 || range_hi < 9) + sprintf(alias + strlen(alias), "[%u-%u]", range_lo, range_hi); + if (bcdDevice_initial_digits < (sizeof(id->bcdDevice_lo) * 2 - 1)) + strcat(alias, "*"); + ADD(alias, "dc", id->match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS, id->bDeviceClass); ADD(alias, "dsc", @@ -90,7 +89,73 @@ static int do_usb_entry(const char *filename, ADD(alias, "ip", id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL, id->bInterfaceProtocol); - return 1; + + /* Always end in a wildcard, for future extension */ + if (alias[strlen(alias)-1] != '*') + strcat(alias, "*"); + buf_printf(&mod->dev_table_buf, + "MODULE_ALIAS(\"%s\");\n", alias); +} + +static void do_usb_entry_multi(struct usb_device_id *id, struct module *mod) +{ + unsigned int devlo, devhi; + unsigned char chi, clo; + int ndigits; + + id->match_flags = TO_NATIVE(id->match_flags); + id->idVendor = TO_NATIVE(id->idVendor); + id->idProduct = TO_NATIVE(id->idProduct); + + devlo = id->match_flags & USB_DEVICE_ID_MATCH_DEV_LO ? + TO_NATIVE(id->bcdDevice_lo) : 0x0U; + devhi = id->match_flags & USB_DEVICE_ID_MATCH_DEV_HI ? + TO_NATIVE(id->bcdDevice_hi) : ~0x0U; + + /* + * 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)) + return; + + /* Convert numeric bcdDevice range into fnmatch-able pattern(s) */ + for (ndigits = sizeof(id->bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) { + clo = devlo & 0xf; + chi = devhi & 0xf; + if (chi > 9) /* it's bcd not hex */ + chi = 9; + devlo >>= 4; + devhi >>= 4; + + if (devlo == devhi || !ndigits) { + do_usb_entry(id, devlo, ndigits, clo, chi, mod); + break; + } + + if (clo > 0) + do_usb_entry(id, devlo++, ndigits, clo, 9, mod); + + if (chi < 9) + do_usb_entry(id, devhi--, ndigits, 0, chi, mod); + } +} + +static void do_usb_table(void *symval, unsigned long size, + struct module *mod) +{ + unsigned int i; + const unsigned long id_size = sizeof(struct usb_device_id); + + if (size % id_size || size < id_size) { + fprintf(stderr, "*** Warning: %s ids %lu bad size " + "(each on %lu)\n", mod->name, size, id_size); + } + /* Leave last one: it's the terminator. */ + size -= id_size; + + for (i = 0; i < size; i += id_size) + do_usb_entry_multi(symval + i, mod); } /* Looks like: ieee1394:venNmoNspNverN */ @@ -280,8 +345,8 @@ void handle_moddevtable(struct module *mod, struct elf_info *info, do_table(symval, sym->st_size, sizeof(struct pci_device_id), do_pci_entry, mod); else if (sym_is(symname, "__mod_usb_device_table")) - do_table(symval, sym->st_size, sizeof(struct usb_device_id), - do_usb_entry, mod); + /* special case to handle bcdDevice ranges */ + do_usb_table(symval, sym->st_size, mod); else if (sym_is(symname, "__mod_ieee1394_device_table")) do_table(symval, sym->st_size, sizeof(struct ieee1394_device_id), do_ieee1394_entry, mod); |