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file2alias.c
/* 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 "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> 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" /* This array collects all instances that use the generic do_table */ struct devtable { const char *device_id; /* name of table, __mod_<name>__*_device_table. */ unsigned long id_size; int (*do_entry)(const char *filename, void *symval, char *alias); }; /* Size of alias provided to do_entry functions */ #define ALIAS_SIZE 500 /* 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 = TO_NATIVE(*(typeof(f) *)((m) + OFF_##devid##_##f)) /* Define a variable v 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_VAR(m, devid, f, v) \ typeof(((struct devid *)0)->f) *v = ((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) \ DEF_FIELD_ADDR_VAR(m, devid, f, 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) /* End in a wildcard, for future extension */ static inline void add_wildcard(char *str) { int len = strlen(str); if (str[len - 1] != '*') strcat(str + len, "*"); } 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]); } /** * 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_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) { fatal("%s: sizeof(struct %s_device_id)=%lu is not a modulo of the size of section __mod_%s__<identifier>_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 */ /* 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); add_wildcard(alias); buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", 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(void *symval, struct module *mod) { 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_usb_table(void *symval, unsigned long size, struct module *mod) { unsigned int i; const unsigned long id_size = SIZE_usb_device_id; device_id_check(mod->name, "usb", size, id_size, symval); /* 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); } static void do_of_entry_multi(void *symval, struct module *mod) { 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 = '_'; buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias); strcat(alias, "C"); add_wildcard(alias); buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias); } static void do_of_table(void *symval, unsigned long size, struct module *mod) { unsigned int i; const unsigned long id_size = SIZE_of_device_id; device_id_check(mod->name, "of", size, id_size, symval); /* Leave last one: it's the terminator. */ size -= id_size; for (i = 0; i < size; i += id_size) do_of_entry_multi(symval + i, mod); } /* Looks like: hid:bNvNpN */ static int do_hid_entry(const char *filename, void *symval, char *alias) { 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); sprintf(alias, "hid:"); 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); return 1; } /* Looks like: ieee1394:venNmoNspNverN */ static int do_ieee1394_entry(const char *filename, void *symval, char *alias) { 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); strcpy(alias, "ieee1394:"); 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); add_wildcard(alias); return 1; } /* Looks like: pci:vNdNsvNsdNbcNscNiN or <prefix>_pci:vNdNsvNsdNbcNscNiN. */ static int do_pci_entry(const char *filename, void *symval, char *alias) { /* 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); return 0; } 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", filename, class_mask); return 0; } ADD(alias, "bc", baseclass_mask == 0xFF, baseclass); ADD(alias, "sc", subclass_mask == 0xFF, subclass); ADD(alias, "i", interface_mask == 0xFF, interface); add_wildcard(alias); return 1; } /* looks like: "ccw:tNmNdtNdmN" */ static int do_ccw_entry(const char *filename, void *symval, char *alias) { 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); strcpy(alias, "ccw:"); 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); add_wildcard(alias); return 1; } /* looks like: "ap:tN" */ static int do_ap_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, ap_device_id, dev_type); sprintf(alias, "ap:t%02X*", dev_type); return 1; } /* looks like: "css:tN" */ static int do_css_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, css_device_id, type); sprintf(alias, "css:t%01X", type); return 1; } /* Looks like: "serio:tyNprNidNexN" */ static int do_serio_entry(const char *filename, void *symval, char *alias) { 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); strcpy(alias, "serio:"); 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); add_wildcard(alias); return 1; } /* 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 int do_acpi_entry(const char *filename, void *symval, char *alias) { DEF_FIELD_ADDR(symval, acpi_device_id, id); DEF_FIELD_ADDR(symval, acpi_device_id, cls); DEF_FIELD_ADDR(symval, acpi_device_id, cls_msk); if (id && strlen((const char *)*id)) sprintf(alias, "acpi*:%s:*", *id); else if (cls) { int i, byte_shift, cnt = 0; unsigned int msk; sprintf(&alias[cnt], "acpi*:"); cnt = 6; 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; } sprintf(&alias[cnt], ":*"); } return 1; } /* looks like: "pnp:dD" */ static void do_pnp_device_entry(void *symval, unsigned long size, struct module *mod) { const unsigned long id_size = SIZE_pnp_device_id; const unsigned int count = (size / id_size)-1; unsigned int i; device_id_check(mod->name, "pnp", size, id_size, symval); for (i = 0; i < count; i++) { DEF_FIELD_ADDR(symval + i*id_size, pnp_device_id, id); char acpi_id[sizeof(*id)]; int j; buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"pnp:d%s*\");\n", *id); /* fix broken pnp bus lowercasing */ for (j = 0; j < sizeof(acpi_id); j++) acpi_id[j] = toupper((*id)[j]); buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id); } } /* looks like: "pnp:dD" for every device of the card */ static void do_pnp_card_entries(void *symval, unsigned long size, struct module *mod) { const unsigned long id_size = SIZE_pnp_card_device_id; const unsigned int count = (size / id_size)-1; unsigned int i; device_id_check(mod->name, "pnp", size, id_size, symval); for (i = 0; i < count; i++) { unsigned int j; DEF_FIELD_ADDR(symval + i * id_size, pnp_card_device_id, devs); for (j = 0; j < PNP_MAX_DEVICES; j++) { const char *id = (char *)(*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++) { DEF_FIELD_ADDR_VAR(symval + i2 * id_size, pnp_card_device_id, devs, devs_dup); for (j2 = 0; j2 < PNP_MAX_DEVICES; j2++) { const char *id2 = (char *)(*devs_dup)[j2].id; if (!id2[0]) break; if (!strcmp(id, id2)) { dup = 1; break; } } } /* add an individual alias for every device entry */ if (!dup) { char acpi_id[PNP_ID_LEN]; int k; buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"pnp:d%s*\");\n", id); /* fix broken pnp bus lowercasing */ for (k = 0; k < sizeof(acpi_id); k++) acpi_id[k] = toupper(id[k]); buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id); } } } } /* Looks like: pcmcia:mNcNfNfnNpfnNvaNvbNvcNvdN. */ static int do_pcmcia_entry(const char *filename, void *symval, char *alias) { unsigned int i; 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); for (i=0; i<4; i++) { (*prod_id_hash)[i] = TO_NATIVE((*prod_id_hash)[i]); } strcpy(alias, "pcmcia:"); 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, (*prod_id_hash)[0]); ADD(alias, "pb", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, (*prod_id_hash)[1]); ADD(alias, "pc", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, (*prod_id_hash)[2]); ADD(alias, "pd", match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, (*prod_id_hash)[3]); add_wildcard(alias); return 1; } static int do_vio_entry(const char *filename, void *symval, char *alias) { 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 = '_'; add_wildcard(alias); return 1; } static void do_input(char *alias, kernel_ulong_t *arr, unsigned int min, unsigned int max) { unsigned int i; for (i = min / BITS_PER_LONG; i < max / BITS_PER_LONG + 1; i++) arr[i] = TO_NATIVE(arr[i]); for (i = min; i <= max; i++) if (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 int do_input_entry(const char *filename, void *symval, char *alias) { 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); sprintf(alias, "input:"); 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); return 1; } static int do_eisa_entry(const char *filename, void *symval, char *alias) { DEF_FIELD_ADDR(symval, eisa_device_id, sig); sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", *sig); return 1; } /* Looks like: parisc:tNhvNrevNsvN */ static int do_parisc_entry(const char *filename, void *symval, char *alias) { 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); strcpy(alias, "parisc:"); 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); add_wildcard(alias); return 1; } /* Looks like: sdio:cNvNdN. */ static int do_sdio_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, sdio_device_id, class); DEF_FIELD(symval, sdio_device_id, vendor); DEF_FIELD(symval, sdio_device_id, device); strcpy(alias, "sdio:"); 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); add_wildcard(alias); return 1; } /* Looks like: ssb:vNidNrevN. */ static int do_ssb_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, ssb_device_id, vendor); DEF_FIELD(symval, ssb_device_id, coreid); DEF_FIELD(symval, ssb_device_id, revision); strcpy(alias, "ssb:"); ADD(alias, "v", vendor != SSB_ANY_VENDOR, vendor); ADD(alias, "id", coreid != SSB_ANY_ID, coreid); ADD(alias, "rev", revision != SSB_ANY_REV, revision); add_wildcard(alias); return 1; } /* Looks like: bcma:mNidNrevNclN. */ static int do_bcma_entry(const char *filename, void *symval, char *alias) { 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); strcpy(alias, "bcma:"); 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); add_wildcard(alias); return 1; } /* Looks like: virtio:dNvN */ static int do_virtio_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, virtio_device_id, device); DEF_FIELD(symval, virtio_device_id, vendor); strcpy(alias, "virtio:"); ADD(alias, "d", device != VIRTIO_DEV_ANY_ID, device); ADD(alias, "v", vendor != VIRTIO_DEV_ANY_ID, vendor); add_wildcard(alias); return 1; } /* * Looks like: vmbus:guid * Each byte of the guid will be represented by two hex characters * in the name. */ static int do_vmbus_entry(const char *filename, void *symval, char *alias) { int i; DEF_FIELD_ADDR(symval, hv_vmbus_device_id, guid); char guid_name[(sizeof(*guid) + 1) * 2]; for (i = 0; i < (sizeof(*guid) * 2); i += 2) sprintf(&guid_name[i], "%02x", TO_NATIVE((guid->b)[i/2])); strcpy(alias, "vmbus:"); strcat(alias, guid_name); return 1; } /* Looks like: rpmsg:S */ static int do_rpmsg_entry(const char *filename, void *symval, char *alias) { DEF_FIELD_ADDR(symval, rpmsg_device_id, name); sprintf(alias, RPMSG_DEVICE_MODALIAS_FMT, *name); return 1; } /* Looks like: i2c:S */ static int do_i2c_entry(const char *filename, void *symval, char *alias) { DEF_FIELD_ADDR(symval, i2c_device_id, name); sprintf(alias, I2C_MODULE_PREFIX "%s", *name); return 1; } static int do_i3c_entry(const char *filename, void *symval, char *alias) { 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); strcpy(alias, "i3c:"); 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); return 1; } /* Looks like: spi:S */ static int do_spi_entry(const char *filename, void *symval, char *alias) { DEF_FIELD_ADDR(symval, spi_device_id, name); sprintf(alias, SPI_MODULE_PREFIX "%s", *name); return 1; } 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 int do_dmi_entry(const char *filename, void *symval, char *alias) { int i, j; DEF_FIELD_ADDR(symval, dmi_system_id, matches); sprintf(alias, "dmi*"); 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, "*"); } } } strcat(alias, ":"); return 1; } static int do_platform_entry(const char *filename, void *symval, char *alias) { DEF_FIELD_ADDR(symval, platform_device_id, name); sprintf(alias, PLATFORM_MODULE_PREFIX "%s", *name); return 1; } static int do_mdio_entry(const char *filename, void *symval, char *alias) { int i; DEF_FIELD(symval, mdio_device_id, phy_id); DEF_FIELD(symval, mdio_device_id, phy_id_mask); alias += sprintf(alias, MDIO_MODULE_PREFIX); for (i = 0; i < 32; i++) { if (!((phy_id_mask >> (31-i)) & 1)) *(alias++) = '?'; else if ((phy_id >> (31-i)) & 1) *(alias++) = '1'; else *(alias++) = '0'; } /* Terminate the string */ *alias = 0; return 1; } /* Looks like: zorro:iN. */ static int do_zorro_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, zorro_device_id, id); strcpy(alias, "zorro:"); ADD(alias, "i", id != ZORRO_WILDCARD, id); return 1; } /* looks like: "pnp:dD" */ static int do_isapnp_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, isapnp_device_id, vendor); DEF_FIELD(symval, isapnp_device_id, function); sprintf(alias, "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); return 1; } /* Looks like: "ipack:fNvNdN". */ static int do_ipack_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, ipack_device_id, format); DEF_FIELD(symval, ipack_device_id, vendor); DEF_FIELD(symval, ipack_device_id, device); strcpy(alias, "ipack:"); ADD(alias, "f", format != IPACK_ANY_FORMAT, format); ADD(alias, "v", vendor != IPACK_ANY_ID, vendor); ADD(alias, "d", device != IPACK_ANY_ID, device); add_wildcard(alias); return 1; } /* * Append a match expression for a single masked hex digit. * outp points to a pointer to the character at which to append. * *outp is updated on return to point just after the appended text, * to facilitate further appending. */ static void append_nibble_mask(char **outp, unsigned int nibble, unsigned int mask) { char *p = *outp; unsigned int i; switch (mask) { case 0: *p++ = '?'; break; case 0xf: p += sprintf(p, "%X", nibble); break; default: /* * Dumbly emit a match pattern for all possible matching * digits. This could be improved in some cases using ranges, * but it has the advantage of being trivially correct, and is * often optimal. */ *p++ = '['; for (i = 0; i < 0x10; i++) if ((i & mask) == nibble) p += sprintf(p, "%X", i); *p++ = ']'; } /* Ensure that the string remains NUL-terminated: */ *p = '\0'; /* Advance the caller's end-of-string pointer: */ *outp = p; } /* * looks like: "amba:dN" * * N is exactly 8 digits, where each is an upper-case hex digit, or * a ? or [] pattern matching exactly one digit. */ static int do_amba_entry(const char *filename, void *symval, char *alias) { unsigned int digit; char *p = alias; DEF_FIELD(symval, amba_id, id); DEF_FIELD(symval, amba_id, mask); if ((id & mask) != id) fatal("%s: Masked-off bit(s) of AMBA device ID are non-zero: id=0x%08X, mask=0x%08X. Please fix this driver.\n", filename, id, mask); p += sprintf(alias, "amba:d"); for (digit = 0; digit < 8; digit++) append_nibble_mask(&p, (id >> (4 * (7 - digit))) & 0xf, (mask >> (4 * (7 - digit))) & 0xf); return 1; } /* * looks like: "mipscdmm:tN" * * N is exactly 2 digits, where each is an upper-case hex digit, or * a ? or [] pattern matching exactly one digit. */ static int do_mips_cdmm_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, mips_cdmm_device_id, type); sprintf(alias, "mipscdmm:t%02X*", type); return 1; } /* LOOKS like cpu:type:x86,venVVVVfamFFFFmodMMMM:feature:*,FEAT,* * All fields are numbers. It would be nicer to use strings for vendor * and feature, but getting those out of the build system here is too * complicated. */ static int do_x86cpu_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, x86_cpu_id, feature); DEF_FIELD(symval, x86_cpu_id, family); DEF_FIELD(symval, x86_cpu_id, model); DEF_FIELD(symval, x86_cpu_id, vendor); strcpy(alias, "cpu:type:x86,"); ADD(alias, "ven", vendor != X86_VENDOR_ANY, vendor); ADD(alias, "fam", family != X86_FAMILY_ANY, family); ADD(alias, "mod", model != X86_MODEL_ANY, model); strcat(alias, ":feature:*"); if (feature != X86_FEATURE_ANY) sprintf(alias + strlen(alias), "%04X*", feature); return 1; } /* LOOKS like cpu:type:*:feature:*FEAT* */ static int do_cpu_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, cpu_feature, feature); sprintf(alias, "cpu:type:*:feature:*%04X*", feature); return 1; } /* Looks like: mei:S:uuid:N:* */ static int do_mei_entry(const char *filename, void *symval, char *alias) { DEF_FIELD_ADDR(symval, mei_cl_device_id, name); DEF_FIELD_ADDR(symval, mei_cl_device_id, uuid); DEF_FIELD(symval, mei_cl_device_id, version); sprintf(alias, MEI_CL_MODULE_PREFIX); sprintf(alias + strlen(alias), "%s:", (*name)[0] ? *name : "*"); add_uuid(alias, *uuid); ADD(alias, ":", version != MEI_CL_VERSION_ANY, version); strcat(alias, ":*"); return 1; } /* Looks like: rapidio:vNdNavNadN */ static int do_rio_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, rio_device_id, did); DEF_FIELD(symval, rio_device_id, vid); DEF_FIELD(symval, rio_device_id, asm_did); DEF_FIELD(symval, rio_device_id, asm_vid); strcpy(alias, "rapidio:"); ADD(alias, "v", vid != RIO_ANY_ID, vid); ADD(alias, "d", did != RIO_ANY_ID, did); ADD(alias, "av", asm_vid != RIO_ANY_ID, asm_vid); ADD(alias, "ad", asm_did != RIO_ANY_ID, asm_did); add_wildcard(alias); return 1; } /* Looks like: ulpi:vNpN */ static int do_ulpi_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, ulpi_device_id, vendor); DEF_FIELD(symval, ulpi_device_id, product); sprintf(alias, "ulpi:v%04xp%04x", vendor, product); return 1; } /* Looks like: hdaudio:vNrNaN */ static int do_hda_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, hda_device_id, vendor_id); DEF_FIELD(symval, hda_device_id, rev_id); DEF_FIELD(symval, hda_device_id, api_version); strcpy(alias, "hdaudio:"); ADD(alias, "v", vendor_id != 0, vendor_id); ADD(alias, "r", rev_id != 0, rev_id); ADD(alias, "a", api_version != 0, api_version); add_wildcard(alias); return 1; } /* Looks like: sdw:mNpNvNcN */ static int do_sdw_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, sdw_device_id, mfg_id); DEF_FIELD(symval, sdw_device_id, part_id); DEF_FIELD(symval, sdw_device_id, sdw_version); DEF_FIELD(symval, sdw_device_id, class_id); strcpy(alias, "sdw:"); ADD(alias, "m", mfg_id != 0, mfg_id); ADD(alias, "p", part_id != 0, part_id); ADD(alias, "v", sdw_version != 0, sdw_version); ADD(alias, "c", class_id != 0, class_id); add_wildcard(alias); return 1; } /* Looks like: fsl-mc:vNdN */ static int do_fsl_mc_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, fsl_mc_device_id, vendor); DEF_FIELD_ADDR(symval, fsl_mc_device_id, obj_type); sprintf(alias, "fsl-mc:v%08Xd%s", vendor, *obj_type); return 1; } /* Looks like: tbsvc:kSpNvNrN */ static int do_tbsvc_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, tb_service_id, match_flags); DEF_FIELD_ADDR(symval, tb_service_id, protocol_key); DEF_FIELD(symval, tb_service_id, protocol_id); DEF_FIELD(symval, tb_service_id, protocol_version); DEF_FIELD(symval, tb_service_id, protocol_revision); strcpy(alias, "tbsvc:"); if (match_flags & TBSVC_MATCH_PROTOCOL_KEY) sprintf(alias + strlen(alias), "k%s", *protocol_key); else strcat(alias + strlen(alias), "k*"); ADD(alias, "p", match_flags & TBSVC_MATCH_PROTOCOL_ID, protocol_id); ADD(alias, "v", match_flags & TBSVC_MATCH_PROTOCOL_VERSION, protocol_version); ADD(alias, "r", match_flags & TBSVC_MATCH_PROTOCOL_REVISION, protocol_revision); add_wildcard(alias); return 1; } /* Looks like: typec:idNmN */ static int do_typec_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, typec_device_id, svid); DEF_FIELD(symval, typec_device_id, mode); sprintf(alias, "typec:id%04X", svid); ADD(alias, "m", mode != TYPEC_ANY_MODE, mode); return 1; } /* Looks like: tee:uuid */ static int do_tee_entry(const char *filename, void *symval, char *alias) { DEF_FIELD_ADDR(symval, tee_client_device_id, uuid); sprintf(alias, "tee:%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x", uuid->b[0], uuid->b[1], uuid->b[2], uuid->b[3], uuid->b[4], uuid->b[5], uuid->b[6], uuid->b[7], uuid->b[8], uuid->b[9], uuid->b[10], uuid->b[11], uuid->b[12], uuid->b[13], uuid->b[14], uuid->b[15]); add_wildcard(alias); return 1; } /* Looks like: wmi:guid */ static int do_wmi_entry(const char *filename, void *symval, char *alias) { int len; DEF_FIELD_ADDR(symval, wmi_device_id, guid_string); if (strlen(*guid_string) != UUID_STRING_LEN) { warn("Invalid WMI device id 'wmi:%s' in '%s'\n", *guid_string, filename); return 0; } len = snprintf(alias, ALIAS_SIZE, WMI_MODULE_PREFIX "%s", *guid_string); if (len < 0 || len >= ALIAS_SIZE) { warn("Could not generate all MODULE_ALIAS's in '%s'\n", filename); return 0; } return 1; } /* Looks like: mhi:S */ static int do_mhi_entry(const char *filename, void *symval, char *alias) { DEF_FIELD_ADDR(symval, mhi_device_id, chan); sprintf(alias, MHI_DEVICE_MODALIAS_FMT, *chan); return 1; } /* Looks like: mhi_ep:S */ static int do_mhi_ep_entry(const char *filename, void *symval, char *alias) { DEF_FIELD_ADDR(symval, mhi_device_id, chan); sprintf(alias, MHI_EP_DEVICE_MODALIAS_FMT, *chan); return 1; } /* Looks like: ishtp:{guid} */ static int do_ishtp_entry(const char *filename, void *symval, char *alias) { DEF_FIELD_ADDR(symval, ishtp_device_id, guid); strcpy(alias, ISHTP_MODULE_PREFIX "{"); add_guid(alias, *guid); strcat(alias, "}"); return 1; } static int do_auxiliary_entry(const char *filename, void *symval, char *alias) { DEF_FIELD_ADDR(symval, auxiliary_device_id, name); sprintf(alias, AUXILIARY_MODULE_PREFIX "%s", *name); return 1; } /* * Looks like: ssam:dNcNtNiNfN * * N is exactly 2 digits, where each is an upper-case hex digit. */ static int do_ssam_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, ssam_device_id, match_flags); DEF_FIELD(symval, ssam_device_id, domain); DEF_FIELD(symval, ssam_device_id, category); DEF_FIELD(symval, ssam_device_id, target); DEF_FIELD(symval, ssam_device_id, instance); DEF_FIELD(symval, ssam_device_id, function); sprintf(alias, "ssam:d%02Xc%02X", domain, category); ADD(alias, "t", match_flags & SSAM_MATCH_TARGET, target); ADD(alias, "i", match_flags & SSAM_MATCH_INSTANCE, instance); ADD(alias, "f", match_flags & SSAM_MATCH_FUNCTION, function); return 1; } /* Looks like: dfl:tNfN */ static int do_dfl_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, dfl_device_id, type); DEF_FIELD(symval, dfl_device_id, feature_id); sprintf(alias, "dfl:t%04Xf%04X", type, feature_id); add_wildcard(alias); return 1; } /* Looks like: cdx:vNdN */ static int do_cdx_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, cdx_device_id, vendor); DEF_FIELD(symval, cdx_device_id, device); DEF_FIELD(symval, cdx_device_id, subvendor); DEF_FIELD(symval, cdx_device_id, subdevice); DEF_FIELD(symval, cdx_device_id, class); DEF_FIELD(symval, cdx_device_id, class_mask); DEF_FIELD(symval, cdx_device_id, override_only); switch (override_only) { case 0: strcpy(alias, "cdx:"); break; case CDX_ID_F_VFIO_DRIVER_OVERRIDE: strcpy(alias, "vfio_cdx:"); break; default: warn("Unknown CDX driver_override alias %08X\n", override_only); return 0; } ADD(alias, "v", vendor != CDX_ANY_ID, vendor); ADD(alias, "d", device != CDX_ANY_ID, device); ADD(alias, "sv", subvendor != CDX_ANY_ID, subvendor); ADD(alias, "sd", subdevice != CDX_ANY_ID, subdevice); ADD(alias, "c", class_mask == 0xFFFFFF, class); return 1; } static int do_vchiq_entry(const char *filename, void *symval, char *alias) { DEF_FIELD_ADDR(symval, vchiq_device_id, name); sprintf(alias, "vchiq:%s", *name); return 1; } /* Looks like: coreboot:tN */ static int do_coreboot_entry(const char *filename, void *symval, char *alias) { DEF_FIELD(symval, coreboot_device_id, tag); sprintf(alias, "coreboot:t%08X", tag); return 1; } /* Does namelen bytes of name exactly match the symbol? */ static bool sym_is(const char *name, unsigned namelen, const char *symbol) { if (namelen != strlen(symbol)) return false; return memcmp(name, symbol, namelen) == 0; } static void do_table(void *symval, unsigned long size, unsigned long id_size, const char *device_id, int (*do_entry)(const char *filename, void *symval, char *alias), struct module *mod) { unsigned int i; char alias[ALIAS_SIZE]; device_id_check(mod->name, device_id, size, id_size, symval); /* Leave last one: it's the terminator. */ size -= id_size; for (i = 0; i < size; i += id_size) { if (do_entry(mod->name, symval+i, alias)) { buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias); } } } static const struct devtable devtable[] = { {"hid", SIZE_hid_device_id, do_hid_entry}, {"ieee1394", SIZE_ieee1394_device_id, do_ieee1394_entry}, {"pci", SIZE_pci_device_id, do_pci_entry}, {"ccw", SIZE_ccw_device_id, do_ccw_entry}, {"ap", SIZE_ap_device_id, do_ap_entry}, {"css", SIZE_css_device_id, do_css_entry}, {"serio", SIZE_serio_device_id, do_serio_entry}, {"acpi", SIZE_acpi_device_id, do_acpi_entry}, {"pcmcia", SIZE_pcmcia_device_id, do_pcmcia_entry}, {"vio", SIZE_vio_device_id, do_vio_entry}, {"input", SIZE_input_device_id, do_input_entry}, {"eisa", SIZE_eisa_device_id, do_eisa_entry}, {"parisc", SIZE_parisc_device_id, do_parisc_entry}, {"sdio", SIZE_sdio_device_id, do_sdio_entry}, {"ssb", SIZE_ssb_device_id, do_ssb_entry}, {"bcma", SIZE_bcma_device_id, do_bcma_entry}, {"virtio", SIZE_virtio_device_id, do_virtio_entry}, {"vmbus", SIZE_hv_vmbus_device_id, do_vmbus_entry}, {"rpmsg", SIZE_rpmsg_device_id, do_rpmsg_entry}, {"i2c", SIZE_i2c_device_id, do_i2c_entry}, {"i3c", SIZE_i3c_device_id, do_i3c_entry}, {"spi", SIZE_spi_device_id, do_spi_entry}, {"dmi", SIZE_dmi_system_id, do_dmi_entry}, {"platform", SIZE_platform_device_id, do_platform_entry}, {"mdio", SIZE_mdio_device_id, do_mdio_entry}, {"zorro", SIZE_zorro_device_id, do_zorro_entry}, {"isapnp", SIZE_isapnp_device_id, do_isapnp_entry}, {"ipack", SIZE_ipack_device_id, do_ipack_entry}, {"amba", SIZE_amba_id, do_amba_entry}, {"mipscdmm", SIZE_mips_cdmm_device_id, do_mips_cdmm_entry}, {"x86cpu", SIZE_x86_cpu_id, do_x86cpu_entry}, {"cpu", SIZE_cpu_feature, do_cpu_entry}, {"mei", SIZE_mei_cl_device_id, do_mei_entry}, {"rapidio", SIZE_rio_device_id, do_rio_entry}, {"ulpi", SIZE_ulpi_device_id, do_ulpi_entry}, {"hdaudio", SIZE_hda_device_id, do_hda_entry}, {"sdw", SIZE_sdw_device_id, do_sdw_entry}, {"fslmc", SIZE_fsl_mc_device_id, do_fsl_mc_entry}, {"tbsvc", SIZE_tb_service_id, do_tbsvc_entry}, {"typec", SIZE_typec_device_id, do_typec_entry}, {"tee", SIZE_tee_client_device_id, do_tee_entry}, {"wmi", SIZE_wmi_device_id, do_wmi_entry}, {"mhi", SIZE_mhi_device_id, do_mhi_entry}, {"mhi_ep", SIZE_mhi_device_id, do_mhi_ep_entry}, {"auxiliary", SIZE_auxiliary_device_id, do_auxiliary_entry}, {"ssam", SIZE_ssam_device_id, do_ssam_entry}, {"dfl", SIZE_dfl_device_id, do_dfl_entry}, {"ishtp", SIZE_ishtp_device_id, do_ishtp_entry}, {"cdx", SIZE_cdx_device_id, do_cdx_entry}, {"vchiq", SIZE_vchiq_device_id, do_vchiq_entry}, {"coreboot", SIZE_coreboot_device_id, do_coreboot_entry}, }; /* Create MODULE_ALIAS() statements. * At this time, we cannot write the actual output C source yet, * so we write into the mod->dev_table_buf buffer. */ void handle_moddevtable(struct module *mod, struct elf_info *info, Elf_Sym *sym, const char *symname) { void *symval; char *zeros = NULL; const char *name, *identifier; unsigned int namelen; /* We're looking for a section relative symbol */ if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections) return; /* We're looking for an object */ if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT) return; /* All our symbols are of form __mod_<name>__<identifier>_device_table. */ if (strncmp(symname, "__mod_", strlen("__mod_"))) return; name = symname + strlen("__mod_"); namelen = strlen(name); if (namelen < strlen("_device_table")) return; if (strcmp(name + namelen - strlen("_device_table"), "_device_table")) return; identifier = strstr(name, "__"); if (!identifier) return; namelen = identifier - name; /* Handle all-NULL symbols allocated into .bss */ if (info->sechdrs[get_secindex(info, sym)].sh_type & SHT_NOBITS) { zeros = calloc(1, sym->st_size); symval = zeros; } else { symval = sym_get_data(info, sym); } /* First handle the "special" cases */ if (sym_is(name, namelen, "usb")) do_usb_table(symval, sym->st_size, mod); else if (sym_is(name, namelen, "of")) do_of_table(symval, sym->st_size, mod); else if (sym_is(name, namelen, "pnp")) do_pnp_device_entry(symval, sym->st_size, mod); else if (sym_is(name, namelen, "pnp_card")) do_pnp_card_entries(symval, sym->st_size, mod); else { int i; for (i = 0; i < ARRAY_SIZE(devtable); i++) { const struct devtable *p = &devtable[i]; if (sym_is(name, namelen, p->device_id)) { do_table(symval, sym->st_size, p->id_size, p->device_id, p->do_entry, mod); break; } } } free(zeros); } /* Now add out buffered information to the generated C source */ void add_moddevtable(struct buffer *buf, struct module *mod) { buf_printf(buf, "\n"); buf_write(buf, mod->dev_table_buf.p, mod->dev_table_buf.pos); free(mod->dev_table_buf.p); }