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file2alias.c
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/* Simple code to turn various tables in an ELF file into alias definitions.
* This deals with kernel datastructures where they should be
* dealt with: in the kernel source.
*
* Copyright 2002-2003 Rusty Russell, IBM Corporation
* 2003 Kai Germaschewski
*
*
* This software may be used and distributed according to the terms
* of the GNU General Public License, incorporated herein by reference.
*/
#include <stdarg.h>
#include <stdio.h>
#include "list.h"
#include "xalloc.h"
#include "modpost.h"
#include "devicetable-offsets.h"
/* We use the ELF typedefs for kernel_ulong_t but bite the bullet and
* use either stdint.h or inttypes.h for the rest. */
#if KERNEL_ELFCLASS == ELFCLASS32
typedef Elf32_Addr kernel_ulong_t;
#define BITS_PER_LONG 32
#else
typedef Elf64_Addr kernel_ulong_t;
#define BITS_PER_LONG 64
#endif
#ifdef __sun__
#include <inttypes.h>
#else
#include <stdint.h>
#endif
#include <ctype.h>
#include <stdbool.h>
/**
* module_alias_printf - add auto-generated MODULE_ALIAS()
*
* @mod: module
* @append_wildcard: append '*' for future extension if not exist yet
* @fmt: printf(3)-like format
*/
static void __attribute__((format (printf, 3, 4)))
module_alias_printf(struct module *mod, bool append_wildcard,
const char *fmt, ...)
{
struct module_alias *new, *als;
size_t len;
int n;
va_list ap;
/* Determine required size. */
va_start(ap, fmt);
n = vsnprintf(NULL, 0, fmt, ap);
va_end(ap);
if (n < 0) {
error("vsnprintf failed\n");
return;
}
len = n + 1; /* extra byte for '\0' */
if (append_wildcard)
len++; /* extra byte for '*' */
new = xmalloc(sizeof(*new) + len);
/* Now, really print it to the allocated buffer */
va_start(ap, fmt);
n = vsnprintf(new->str, len, fmt, ap);
va_end(ap);
if (n < 0) {
error("vsnprintf failed\n");
free(new);
return;
}
if (append_wildcard && (n == 0 || new->str[n - 1] != '*')) {
new->str[n] = '*';
new->str[n + 1] = '\0';
}
/* avoid duplication */
list_for_each_entry(als, &mod->aliases, node) {
if (!strcmp(als->str, new->str)) {
free(new);
return;
}
}
list_add_tail(&new->node, &mod->aliases);
}
typedef uint32_t __u32;
typedef uint16_t __u16;
typedef unsigned char __u8;
/* UUID types for backward compatibility, don't use in new code */
typedef struct {
__u8 b[16];
} guid_t;
typedef struct {
__u8 b[16];
} uuid_t;
#define UUID_STRING_LEN 36
/* MEI UUID type, don't use anywhere else */
typedef struct {
__u8 b[16];
} uuid_le;
/* Big exception to the "don't include kernel headers into userspace, which
* even potentially has different endianness and word sizes, since
* we handle those differences explicitly below */
#include "../../include/linux/mod_devicetable.h"
struct devtable {
const char *device_id;
unsigned long id_size;
void (*do_entry)(struct module *mod, void *symval);
};
/* Define a variable f that holds the value of field f of struct devid
* based at address m.
*/
#define DEF_FIELD(m, devid, f) \
typeof(((struct devid *)0)->f) f = \
get_unaligned_native((typeof(f) *)((m) + OFF_##devid##_##f))
/* Define a variable f that holds the address of field f of struct devid
* based at address m. Due to the way typeof works, for a field of type
* T[N] the variable has type T(*)[N], _not_ T*.
*/
#define DEF_FIELD_ADDR(m, devid, f) \
typeof(((struct devid *)0)->f) *f = ((m) + OFF_##devid##_##f)
#define ADD(str, sep, cond, field) \
do { \
strcat(str, sep); \
if (cond) \
sprintf(str + strlen(str), \
sizeof(field) == 1 ? "%02X" : \
sizeof(field) == 2 ? "%04X" : \
sizeof(field) == 4 ? "%08X" : "", \
field); \
else \
sprintf(str + strlen(str), "*"); \
} while(0)
static inline void add_uuid(char *str, uuid_le uuid)
{
int len = strlen(str);
sprintf(str + len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
uuid.b[3], uuid.b[2], uuid.b[1], uuid.b[0],
uuid.b[5], uuid.b[4], uuid.b[7], uuid.b[6],
uuid.b[8], uuid.b[9], uuid.b[10], uuid.b[11],
uuid.b[12], uuid.b[13], uuid.b[14], uuid.b[15]);
}
static inline void add_guid(char *str, guid_t guid)
{
int len = strlen(str);
sprintf(str + len, "%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
guid.b[3], guid.b[2], guid.b[1], guid.b[0],
guid.b[5], guid.b[4], guid.b[7], guid.b[6],
guid.b[8], guid.b[9], guid.b[10], guid.b[11],
guid.b[12], guid.b[13], guid.b[14], guid.b[15]);
}
/* USB is special because the bcdDevice can be matched against a numeric range */
/* Looks like "usb:vNpNdNdcNdscNdpNicNiscNipNinN" */
static void do_usb_entry(void *symval,
unsigned int bcdDevice_initial, int bcdDevice_initial_digits,
unsigned char range_lo, unsigned char range_hi,
unsigned char max, struct module *mod)
{
char alias[500];
DEF_FIELD(symval, usb_device_id, match_flags);
DEF_FIELD(symval, usb_device_id, idVendor);
DEF_FIELD(symval, usb_device_id, idProduct);
DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
DEF_FIELD(symval, usb_device_id, bDeviceClass);
DEF_FIELD(symval, usb_device_id, bDeviceSubClass);
DEF_FIELD(symval, usb_device_id, bDeviceProtocol);
DEF_FIELD(symval, usb_device_id, bInterfaceClass);
DEF_FIELD(symval, usb_device_id, bInterfaceSubClass);
DEF_FIELD(symval, usb_device_id, bInterfaceProtocol);
DEF_FIELD(symval, usb_device_id, bInterfaceNumber);
strcpy(alias, "usb:");
ADD(alias, "v", match_flags&USB_DEVICE_ID_MATCH_VENDOR,
idVendor);
ADD(alias, "p", match_flags&USB_DEVICE_ID_MATCH_PRODUCT,
idProduct);
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), "%X", range_lo);
else if (range_lo > 0 || range_hi < max) {
if (range_lo > 0x9 || range_hi < 0xA)
sprintf(alias + strlen(alias),
"[%X-%X]",
range_lo,
range_hi);
else {
sprintf(alias + strlen(alias),
range_lo < 0x9 ? "[%X-9" : "[%X",
range_lo);
sprintf(alias + strlen(alias),
range_hi > 0xA ? "A-%X]" : "%X]",
range_hi);
}
}
if (bcdDevice_initial_digits < (sizeof(bcdDevice_lo) * 2 - 1))
strcat(alias, "*");
ADD(alias, "dc", match_flags&USB_DEVICE_ID_MATCH_DEV_CLASS,
bDeviceClass);
ADD(alias, "dsc", match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS,
bDeviceSubClass);
ADD(alias, "dp", match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL,
bDeviceProtocol);
ADD(alias, "ic", match_flags&USB_DEVICE_ID_MATCH_INT_CLASS,
bInterfaceClass);
ADD(alias, "isc", match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS,
bInterfaceSubClass);
ADD(alias, "ip", match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL,
bInterfaceProtocol);
ADD(alias, "in", match_flags&USB_DEVICE_ID_MATCH_INT_NUMBER,
bInterfaceNumber);
module_alias_printf(mod, true, "%s", alias);
}
/* Handles increment/decrement of BCD formatted integers */
/* Returns the previous value, so it works like i++ or i-- */
static unsigned int incbcd(unsigned int *bcd,
int inc,
unsigned char max,
size_t chars)
{
unsigned int init = *bcd, i, j;
unsigned long long c, dec = 0;
/* If bcd is not in BCD format, just increment */
if (max > 0x9) {
*bcd += inc;
return init;
}
/* Convert BCD to Decimal */
for (i=0 ; i < chars ; i++) {
c = (*bcd >> (i << 2)) & 0xf;
c = c > 9 ? 9 : c; /* force to bcd just in case */
for (j=0 ; j < i ; j++)
c = c * 10;
dec += c;
}
/* Do our increment/decrement */
dec += inc;
*bcd = 0;
/* Convert back to BCD */
for (i=0 ; i < chars ; i++) {
for (c=1,j=0 ; j < i ; j++)
c = c * 10;
c = (dec / c) % 10;
*bcd += c << (i << 2);
}
return init;
}
static void do_usb_entry_multi(struct module *mod, void *symval)
{
unsigned int devlo, devhi;
unsigned char chi, clo, max;
int ndigits;
DEF_FIELD(symval, usb_device_id, match_flags);
DEF_FIELD(symval, usb_device_id, idVendor);
DEF_FIELD(symval, usb_device_id, idProduct);
DEF_FIELD(symval, usb_device_id, bcdDevice_lo);
DEF_FIELD(symval, usb_device_id, bcdDevice_hi);
DEF_FIELD(symval, usb_device_id, bDeviceClass);
DEF_FIELD(symval, usb_device_id, bInterfaceClass);
devlo = match_flags & USB_DEVICE_ID_MATCH_DEV_LO ?
bcdDevice_lo : 0x0U;
devhi = match_flags & USB_DEVICE_ID_MATCH_DEV_HI ?
bcdDevice_hi : ~0x0U;
/* Figure out if this entry is in bcd or hex format */
max = 0x9; /* Default to decimal format */
for (ndigits = 0 ; ndigits < sizeof(bcdDevice_lo) * 2 ; ndigits++) {
clo = (devlo >> (ndigits << 2)) & 0xf;
chi = ((devhi > 0x9999 ? 0x9999 : devhi) >> (ndigits << 2)) & 0xf;
if (clo > max || chi > max) {
max = 0xf;
break;
}
}
/*
* Some modules (visor) have empty slots as placeholder for
* run-time specification that results in catch-all alias
*/
if (!(idVendor | idProduct | bDeviceClass | bInterfaceClass))
return;
/* Convert numeric bcdDevice range into fnmatch-able pattern(s) */
for (ndigits = sizeof(bcdDevice_lo) * 2 - 1; devlo <= devhi; ndigits--) {
clo = devlo & 0xf;
chi = devhi & 0xf;
if (chi > max) /* If we are in bcd mode, truncate if necessary */
chi = max;
devlo >>= 4;
devhi >>= 4;
if (devlo == devhi || !ndigits) {
do_usb_entry(symval, devlo, ndigits, clo, chi, max, mod);
break;
}
if (clo > 0x0)
do_usb_entry(symval,
incbcd(&devlo, 1, max,
sizeof(bcdDevice_lo) * 2),
ndigits, clo, max, max, mod);
if (chi < max)
do_usb_entry(symval,
incbcd(&devhi, -1, max,
sizeof(bcdDevice_lo) * 2),
ndigits, 0x0, chi, max, mod);
}
}
static void do_of_entry(struct module *mod, void *symval)
{
char alias[500];
int len;
char *tmp;
DEF_FIELD_ADDR(symval, of_device_id, name);
DEF_FIELD_ADDR(symval, of_device_id, type);
DEF_FIELD_ADDR(symval, of_device_id, compatible);
len = sprintf(alias, "of:N%sT%s", (*name)[0] ? *name : "*",
(*type)[0] ? *type : "*");
if ((*compatible)[0])
sprintf(&alias[len], "%sC%s", (*type)[0] ? "*" : "",
*compatible);
/* Replace all whitespace with underscores */
for (tmp = alias; tmp && *tmp; tmp++)
if (isspace(*tmp))
*tmp = '_';
module_alias_printf(mod, false, "%s", alias);
module_alias_printf(mod, false, "%sC*", alias);
}
/* Looks like: hid:bNvNpN */
static void do_hid_entry(struct module *mod, void *symval)
{
char alias[256] = {};
DEF_FIELD(symval, hid_device_id, bus);
DEF_FIELD(symval, hid_device_id, group);
DEF_FIELD(symval, hid_device_id, vendor);
DEF_FIELD(symval, hid_device_id, product);
ADD(alias, "b", bus != HID_BUS_ANY, bus);
ADD(alias, "g", group != HID_GROUP_ANY, group);
ADD(alias, "v", vendor != HID_ANY_ID, vendor);
ADD(alias, "p", product != HID_ANY_ID, product);
module_alias_printf(mod, false, "hid:%s", alias);
}
/* Looks like: ieee1394:venNmoNspNverN */
static void do_ieee1394_entry(struct module *mod, void *symval)
{
char alias[256] = {};
DEF_FIELD(symval, ieee1394_device_id, match_flags);
DEF_FIELD(symval, ieee1394_device_id, vendor_id);
DEF_FIELD(symval, ieee1394_device_id, model_id);
DEF_FIELD(symval, ieee1394_device_id, specifier_id);
DEF_FIELD(symval, ieee1394_device_id, version);
ADD(alias, "ven", match_flags & IEEE1394_MATCH_VENDOR_ID,
vendor_id);
ADD(alias, "mo", match_flags & IEEE1394_MATCH_MODEL_ID,
model_id);
ADD(alias, "sp", match_flags & IEEE1394_MATCH_SPECIFIER_ID,
specifier_id);
ADD(alias, "ver", match_flags & IEEE1394_MATCH_VERSION,
version);
module_alias_printf(mod, true, "ieee1394:%s", alias);
}
/* Looks like: pci:vNdNsvNsdNbcNscNiN or <prefix>_pci:vNdNsvNsdNbcNscNiN. */
static void do_pci_entry(struct module *mod, void *symval)
{
char alias[256];
/* Class field can be divided into these three. */
unsigned char baseclass, subclass, interface,
baseclass_mask, subclass_mask, interface_mask;
DEF_FIELD(symval, pci_device_id, vendor);
DEF_FIELD(symval, pci_device_id, device);
DEF_FIELD(symval, pci_device_id, subvendor);
DEF_FIELD(symval, pci_device_id, subdevice);
DEF_FIELD(symval, pci_device_id, class);
DEF_FIELD(symval, pci_device_id, class_mask);
DEF_FIELD(symval, pci_device_id, override_only);
switch (override_only) {
case 0:
strcpy(alias, "pci:");
break;
case PCI_ID_F_VFIO_DRIVER_OVERRIDE:
strcpy(alias, "vfio_pci:");
break;
default:
warn("Unknown PCI driver_override alias %08X\n",
override_only);
}
ADD(alias, "v", vendor != PCI_ANY_ID, vendor);
ADD(alias, "d", device != PCI_ANY_ID, device);
ADD(alias, "sv", subvendor != PCI_ANY_ID, subvendor);
ADD(alias, "sd", subdevice != PCI_ANY_ID, subdevice);
baseclass = (class) >> 16;
baseclass_mask = (class_mask) >> 16;
subclass = (class) >> 8;
subclass_mask = (class_mask) >> 8;
interface = class;
interface_mask = class_mask;
if ((baseclass_mask != 0 && baseclass_mask != 0xFF)
|| (subclass_mask != 0 && subclass_mask != 0xFF)
|| (interface_mask != 0 && interface_mask != 0xFF)) {
warn("Can't handle masks in %s:%04X\n",
mod->name, class_mask);
return;
}
ADD(alias, "bc", baseclass_mask == 0xFF, baseclass);
ADD(alias, "sc", subclass_mask == 0xFF, subclass);
ADD(alias, "i", interface_mask == 0xFF, interface);
module_alias_printf(mod, true, "%s", alias);
}
/* looks like: "ccw:tNmNdtNdmN" */
static void do_ccw_entry(struct module *mod, void *symval)
{
char alias[256] = {};
DEF_FIELD(symval, ccw_device_id, match_flags);
DEF_FIELD(symval, ccw_device_id, cu_type);
DEF_FIELD(symval, ccw_device_id, cu_model);
DEF_FIELD(symval, ccw_device_id, dev_type);
DEF_FIELD(symval, ccw_device_id, dev_model);
ADD(alias, "t", match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE,
cu_type);
ADD(alias, "m", match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL,
cu_model);
ADD(alias, "dt", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE,
dev_type);
ADD(alias, "dm", match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL,
dev_model);
module_alias_printf(mod, true, "ccw:%s", alias);
}
/* looks like: "ap:tN" */
static void do_ap_entry(struct module *mod, void *symval)
{
DEF_FIELD(symval, ap_device_id, dev_type);
module_alias_printf(mod, false, "ap:t%02X*", dev_type);
}
/* looks like: "css:tN" */
static void do_css_entry(struct module *mod, void *symval)
{
DEF_FIELD(symval, css_device_id, type);
module_alias_printf(mod, false, "css:t%01X", type);
}
/* Looks like: "serio:tyNprNidNexN" */
static void do_serio_entry(struct module *mod, void *symval)
{
char alias[256] = {};
DEF_FIELD(symval, serio_device_id, type);
DEF_FIELD(symval, serio_device_id, proto);
DEF_FIELD(symval, serio_device_id, id);
DEF_FIELD(symval, serio_device_id, extra);
ADD(alias, "ty", type != SERIO_ANY, type);
ADD(alias, "pr", proto != SERIO_ANY, proto);
ADD(alias, "id", id != SERIO_ANY, id);
ADD(alias, "ex", extra != SERIO_ANY, extra);
module_alias_printf(mod, true, "serio:%s", alias);
}
/* looks like: "acpi:ACPI0003" or "acpi:PNP0C0B" or "acpi:LNXVIDEO" or
* "acpi:bbsspp" (bb=base-class, ss=sub-class, pp=prog-if)
*
* NOTE: Each driver should use one of the following : _HID, _CIDs
* or _CLS. Also, bb, ss, and pp can be substituted with ??
* as don't care byte.
*/
static void do_acpi_entry(struct module *mod, void *symval)
{
DEF_FIELD_ADDR(symval, acpi_device_id, id);
DEF_FIELD(symval, acpi_device_id, cls);
DEF_FIELD(symval, acpi_device_id, cls_msk);
if ((*id)[0])
module_alias_printf(mod, false, "acpi*:%s:*", *id);
else {
char alias[256];
int i, byte_shift, cnt = 0;
unsigned int msk;
for (i = 1; i <= 3; i++) {
byte_shift = 8 * (3-i);
msk = (cls_msk >> byte_shift) & 0xFF;
if (msk)
sprintf(&alias[cnt], "%02x",
(cls >> byte_shift) & 0xFF);
else
sprintf(&alias[cnt], "??");
cnt += 2;
}
module_alias_printf(mod, false, "acpi*:%s:*", alias);
}
}
/* looks like: "pnp:dD" */
static void do_pnp_device_entry(struct module *mod, void *symval)
{
DEF_FIELD_ADDR(symval, pnp_device_id, id);
char acpi_id[sizeof(*id)];
/* fix broken pnp bus lowercasing */
for (unsigned int i = 0; i < sizeof(acpi_id); i++)
acpi_id[i] = toupper((*id)[i]);
module_alias_printf(mod, false, "pnp:d%s*", *id);
module_alias_printf(mod, false, "acpi*:%s:*", acpi_id);
}
/* looks like: "pnp:dD" for every device of the card */
static void do_pnp_card_entry(struct module *mod, void *symval)
{
DEF_FIELD_ADDR(symval, pnp_card_device_id, devs);
for (unsigned int i = 0; i < PNP_MAX_DEVICES; i++) {
const char *id = (char *)(*devs)[i].id;
char acpi_id[PNP_ID_LEN];
if (!id[0])
break;
/* fix broken pnp bus lowercasing */
for (unsigned int j = 0; j < sizeof(acpi_id); j++)
acpi_id[j] = toupper(id[j]);
/* add an individual alias for every device entry */
module_alias_printf(mod, false, "pnp:d%s*", id);
module_alias_printf(mod, false, "acpi*:%s:*", acpi_id);
}
}
/* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */
static void do_pcmcia_entry(struct module *mod, void *symval)
{
char alias[256] = {};
DEF_FIELD(symval, pcmcia_device_id, match_flags);
DEF_FIELD(symval, pcmcia_device_id, manf_id);
DEF_FIELD(symval, pcmcia_device_id, card_id);
DEF_FIELD(symval, pcmcia_device_id, func_id);
DEF_FIELD(symval, pcmcia_device_id, function);
DEF_FIELD(symval, pcmcia_device_id, device_no);
DEF_FIELD_ADDR(symval, pcmcia_device_id, prod_id_hash);
ADD(alias, "m", match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID,
manf_id);
ADD(alias, "c", match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID,
card_id);
ADD(alias, "f", match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID,
func_id);
ADD(alias, "fn", match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION,
function);
ADD(alias, "pfn", match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO,
device_no);
ADD(alias, "pa", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1,
get_unaligned_native(*prod_id_hash + 0));
ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2,
get_unaligned_native(*prod_id_hash + 1));
ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3,
get_unaligned_native(*prod_id_hash + 2));
ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4,
get_unaligned_native(*prod_id_hash + 3));
module_alias_printf(mod, true, "pcmcia:%s", alias);
}
static void do_vio_entry(struct module *mod, void *symval)
{
char alias[256];
char *tmp;
DEF_FIELD_ADDR(symval, vio_device_id, type);
DEF_FIELD_ADDR(symval, vio_device_id, compat);
sprintf(alias, "vio:T%sS%s", (*type)[0] ? *type : "*",
(*compat)[0] ? *compat : "*");
/* Replace all whitespace with underscores */
for (tmp = alias; tmp && *tmp; tmp++)
if (isspace (*tmp))
*tmp = '_';
module_alias_printf(mod, true, "%s", alias);
}
static void do_input(char *alias,
kernel_ulong_t *arr, unsigned int min, unsigned int max)
{
unsigned int i;
for (i = min; i <= max; i++)
if (get_unaligned_native(arr + i / BITS_PER_LONG) &
(1ULL << (i % BITS_PER_LONG)))
sprintf(alias + strlen(alias), "%X,*", i);
}
/* input:b0v0p0e0-eXkXrXaXmXlXsXfXwX where X is comma-separated %02X. */
static void do_input_entry(struct module *mod, void *symval)
{
char alias[256] = {};
DEF_FIELD(symval, input_device_id, flags);
DEF_FIELD(symval, input_device_id, bustype);
DEF_FIELD(symval, input_device_id, vendor);
DEF_FIELD(symval, input_device_id, product);
DEF_FIELD(symval, input_device_id, version);
DEF_FIELD_ADDR(symval, input_device_id, evbit);
DEF_FIELD_ADDR(symval, input_device_id, keybit);
DEF_FIELD_ADDR(symval, input_device_id, relbit);
DEF_FIELD_ADDR(symval, input_device_id, absbit);
DEF_FIELD_ADDR(symval, input_device_id, mscbit);
DEF_FIELD_ADDR(symval, input_device_id, ledbit);
DEF_FIELD_ADDR(symval, input_device_id, sndbit);
DEF_FIELD_ADDR(symval, input_device_id, ffbit);
DEF_FIELD_ADDR(symval, input_device_id, swbit);
ADD(alias, "b", flags & INPUT_DEVICE_ID_MATCH_BUS, bustype);
ADD(alias, "v", flags & INPUT_DEVICE_ID_MATCH_VENDOR, vendor);
ADD(alias, "p", flags & INPUT_DEVICE_ID_MATCH_PRODUCT, product);
ADD(alias, "e", flags & INPUT_DEVICE_ID_MATCH_VERSION, version);
sprintf(alias + strlen(alias), "-e*");
if (flags & INPUT_DEVICE_ID_MATCH_EVBIT)
do_input(alias, *evbit, 0, INPUT_DEVICE_ID_EV_MAX);
sprintf(alias + strlen(alias), "k*");
if (flags & INPUT_DEVICE_ID_MATCH_KEYBIT)
do_input(alias, *keybit,
INPUT_DEVICE_ID_KEY_MIN_INTERESTING,
INPUT_DEVICE_ID_KEY_MAX);
sprintf(alias + strlen(alias), "r*");
if (flags & INPUT_DEVICE_ID_MATCH_RELBIT)
do_input(alias, *relbit, 0, INPUT_DEVICE_ID_REL_MAX);
sprintf(alias + strlen(alias), "a*");
if (flags & INPUT_DEVICE_ID_MATCH_ABSBIT)
do_input(alias, *absbit, 0, INPUT_DEVICE_ID_ABS_MAX);
sprintf(alias + strlen(alias), "m*");
if (flags & INPUT_DEVICE_ID_MATCH_MSCIT)
do_input(alias, *mscbit, 0, INPUT_DEVICE_ID_MSC_MAX);
sprintf(alias + strlen(alias), "l*");
if (flags & INPUT_DEVICE_ID_MATCH_LEDBIT)
do_input(alias, *ledbit, 0, INPUT_DEVICE_ID_LED_MAX);
sprintf(alias + strlen(alias), "s*");
if (flags & INPUT_DEVICE_ID_MATCH_SNDBIT)
do_input(alias, *sndbit, 0, INPUT_DEVICE_ID_SND_MAX);
sprintf(alias + strlen(alias), "f*");
if (flags & INPUT_DEVICE_ID_MATCH_FFBIT)
do_input(alias, *ffbit, 0, INPUT_DEVICE_ID_FF_MAX);
sprintf(alias + strlen(alias), "w*");
if (flags & INPUT_DEVICE_ID_MATCH_SWBIT)
do_input(alias, *swbit, 0, INPUT_DEVICE_ID_SW_MAX);
module_alias_printf(mod, false, "input:%s", alias);
}
static void do_eisa_entry(struct module *mod, void *symval)
{
DEF_FIELD_ADDR(symval, eisa_device_id, sig);
module_alias_printf(mod, false, EISA_DEVICE_MODALIAS_FMT "*", *sig);
}
/* Looks like: parisc:tNhvNrevNsvN */
static void do_parisc_entry(struct module *mod, void *symval)
{
char alias[256] = {};
DEF_FIELD(symval, parisc_device_id, hw_type);
DEF_FIELD(symval, parisc_device_id, hversion);
DEF_FIELD(symval, parisc_device_id, hversion_rev);
DEF_FIELD(symval, parisc_device_id, sversion);
ADD(alias, "t", hw_type != PA_HWTYPE_ANY_ID, hw_type);
ADD(alias, "hv", hversion != PA_HVERSION_ANY_ID, hversion);
ADD(alias, "rev", hversion_rev != PA_HVERSION_REV_ANY_ID, hversion_rev);
ADD(alias, "sv", sversion != PA_SVERSION_ANY_ID, sversion);
module_alias_printf(mod, true, "parisc:%s", alias);
}
/* Looks like: sdio:cNvNdN. */
static void do_sdio_entry(struct module *mod, void *symval)
{
char alias[256] = {};
DEF_FIELD(symval, sdio_device_id, class);
DEF_FIELD(symval, sdio_device_id, vendor);
DEF_FIELD(symval, sdio_device_id, device);
ADD(alias, "c", class != (__u8)SDIO_ANY_ID, class);
ADD(alias, "v", vendor != (__u16)SDIO_ANY_ID, vendor);
ADD(alias, "d", device != (__u16)SDIO_ANY_ID, device);
module_alias_printf(mod, true, "sdio:%s", alias);
}
/* Looks like: ssb:vNidNrevN. */
static void do_ssb_entry(struct module *mod, void *symval)
{
char alias[256] = {};
DEF_FIELD(symval, ssb_device_id, vendor);
DEF_FIELD(symval, ssb_device_id, coreid);
DEF_FIELD(symval, ssb_device_id, revision);
ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor);
ADD(alias, "id", coreid != SSB_ANY_ID, coreid);
ADD(alias, "rev", revision != SSB_ANY_REV, revision);
module_alias_printf(mod, true, "ssb:%s", alias);
}
/* Looks like: bcma:mNidNrevNclN. */
static void do_bcma_entry(struct module *mod, void *symval)
{
char alias[256] = {};
DEF_FIELD(symval, bcma_device_id, manuf);
DEF_FIELD(symval, bcma_device_id, id);
DEF_FIELD(symval, bcma_device_id, rev);
DEF_FIELD(symval, bcma_device_id, class);
ADD(alias, "m", manuf != BCMA_ANY_MANUF, manuf);
ADD(alias, "id", id != BCMA_ANY_ID, id);
ADD(alias, "rev", rev != BCMA_ANY_REV, rev);
ADD(alias, "cl", class != BCMA_ANY_CLASS, class);
module_alias_printf(mod, true, "bcma:%s", alias);
}
/* Looks like: virtio:dNvN */
static void do_virtio_entry(struct module *mod, void *symval)
{
char alias[256] = {};
DEF_FIELD(symval, virtio_device_id, device);
DEF_FIELD(symval, virtio_device_id, vendor);
ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device);
ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor);
module_alias_printf(mod, true, "virtio:%s", alias);
}
/*
* Looks like: vmbus:guid
* Each byte of the guid will be represented by two hex characters
* in the name.
*/
static void do_vmbus_entry(struct module *mod, void *symval)
{
DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid);
char guid_name[sizeof(*guid) * 2 + 1];
for (int i = 0; i < sizeof(*guid); i++)
sprintf(&guid_name[i * 2], "%02x", guid->b[i]);
module_alias_printf(mod, false, "vmbus:%s", guid_name);
}
/* Looks like: rpmsg:S */
static void do_rpmsg_entry(struct module *mod, void *symval)
{
DEF_FIELD_ADDR(symval, rpmsg_device_id, name);
module_alias_printf(mod, false, RPMSG_DEVICE_MODALIAS_FMT, *name);
}
/* Looks like: i2c:S */
static void do_i2c_entry(struct module *mod, void *symval)
{
DEF_FIELD_ADDR(symval, i2c_device_id, name);
module_alias_printf(mod, false, I2C_MODULE_PREFIX "%s", *name);
}
static void do_i3c_entry(struct module *mod, void *symval)
{
char alias[256] = {};
DEF_FIELD(symval, i3c_device_id, match_flags);
DEF_FIELD(symval, i3c_device_id, dcr);
DEF_FIELD(symval, i3c_device_id, manuf_id);
DEF_FIELD(symval, i3c_device_id, part_id);
DEF_FIELD(symval, i3c_device_id, extra_info);
ADD(alias, "dcr", match_flags & I3C_MATCH_DCR, dcr);
ADD(alias, "manuf", match_flags & I3C_MATCH_MANUF, manuf_id);
ADD(alias, "part", match_flags & I3C_MATCH_PART, part_id);
ADD(alias, "ext", match_flags & I3C_MATCH_EXTRA_INFO, extra_info);
module_alias_printf(mod, false, "i3c:%s", alias);
}
static void do_slim_entry(struct module *mod, void *symval)
{
DEF_FIELD(symval, slim_device_id, manf_id);
DEF_FIELD(symval, slim_device_id, prod_code);
module_alias_printf(mod, false, "slim:%x:%x:*", manf_id, prod_code);
}
/* Looks like: spi:S */
static void do_spi_entry(struct module *mod, void *symval)
{
DEF_FIELD_ADDR(symval, spi_device_id, name);
module_alias_printf(mod, false, SPI_MODULE_PREFIX "%s", *name);
}
static const struct dmifield {
const char *prefix;
int field;
} dmi_fields[] = {
{ "bvn", DMI_BIOS_VENDOR },
{ "bvr", DMI_BIOS_VERSION },
{ "bd", DMI_BIOS_DATE },
{ "br", DMI_BIOS_RELEASE },
{ "efr", DMI_EC_FIRMWARE_RELEASE },
{ "svn", DMI_SYS_VENDOR },
{ "pn", DMI_PRODUCT_NAME },
{ "pvr", DMI_PRODUCT_VERSION },
{ "rvn", DMI_BOARD_VENDOR },
{ "rn", DMI_BOARD_NAME },
{ "rvr", DMI_BOARD_VERSION },
{ "cvn", DMI_CHASSIS_VENDOR },
{ "ct", DMI_CHASSIS_TYPE },
{ "cvr", DMI_CHASSIS_VERSION },
{ NULL, DMI_NONE }
};
static void dmi_ascii_filter(char *d, const char *s)
{
/* Filter out characters we don't want to see in the modalias string */
for (; *s; s++)
if (*s > ' ' && *s < 127 && *s != ':')
*(d++) = *s;
*d = 0;
}
static void do_dmi_entry(struct module *mod, void *symval)
{
char alias[256] = {};
int i, j;
DEF_FIELD_ADDR(symval, dmi_system_id, matches);
for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) {
for (j = 0; j < 4; j++) {
if ((*matches)[j].slot &&
(*matches)[j].slot == dmi_fields[i].field) {
sprintf(alias + strlen(alias), ":%s*",
dmi_fields[i].prefix);
dmi_ascii_filter(alias + strlen(alias),
(*matches)[j].substr);
strcat(alias, "*");
}
}
}
module_alias_printf(mod, false, "dmi*%s:", alias);
}
static void do_platform_entry(struct module *mod, void *symval)
{
DEF_FIELD_ADDR(symval, platform_device_id, name);
module_alias_printf(mod, false, PLATFORM_MODULE_PREFIX "%s", *name);
}
static void do_mdio_entry(struct module *mod, void *symval)
{
char id[33];
int i;
DEF_FIELD(symval, mdio_device_id, phy_id);
DEF_FIELD(symval, mdio_device_id, phy_id_mask);
for (i = 0; i < 32; i++) {
if (!((phy_id_mask >> (31-i)) & 1))
id[i] = '?';
else if ((phy_id >> (31-i)) & 1)
id[i] = '1';
else
id[i] = '0';
}
/* Terminate the string */
id[32] = '\0';
module_alias_printf(mod, false, MDIO_MODULE_PREFIX "%s", id);
}
/* Looks like: zorro:iN. */
static void do_zorro_entry(struct module *mod, void *symval)
{
char alias[256] = {};
DEF_FIELD(symval, zorro_device_id, id);
ADD(alias, "i", id != ZORRO_WILDCARD, id);
module_alias_printf(mod, false, "zorro:%s", alias);
}
/* looks like: "pnp:dD" */
static void do_isapnp_entry(struct module *mod, void *symval)
{
DEF_FIELD(symval, isapnp_device_id, vendor);
DEF_FIELD(symval, isapnp_device_id, function);
module_alias_printf(mod, false, "pnp:d%c%c%c%x%x%x%x*",
'A' + ((vendor >> 2) & 0x3f) - 1,
'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
'A' + ((vendor >> 8) & 0x1f) - 1,
(function >> 4) & 0x0f, function & 0x0f,
(function >> 12) & 0x0f, (function >> 8) & 0x0f);
}
/* Looks like: "ipack:fNvNdN". */
static void do_ipack_entry(struct module *mod, void *symval)
{
char alias[256] = {};
DEF_FIELD(symval, ipack_device_id, format);
DEF_FIELD(symval, ipack_device_id, vendor);
DEF_FIELD(symval, ipack_device_id, device);
ADD(alias, "f", format != IPACK_ANY_FORMAT, format);
ADD(alias, "v", vendor != IPACK_ANY_ID, vendor);
ADD(alias, "d", device != IPACK_ANY_ID, device);
module_alias_printf(mod, true, "ipack:%s", alias);
}
/*
* Append a match expression for a single masked hex digit.
* outp points to a pointer to the character at which to append.