diff options
Diffstat (limited to 'scripts/mod/file2alias.c')
| -rw-r--r-- | scripts/mod/file2alias.c | 1157 |
1 files changed, 1157 insertions, 0 deletions
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c new file mode 100644 index 00000000..44ddaa54 --- /dev/null +++ b/scripts/mod/file2alias.c @@ -0,0 +1,1157 @@ +/* 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" + +/* 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; + +/* 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; + void *function; +}; + +#define ___cat(a,b) a ## b +#define __cat(a,b) ___cat(a,b) + +/* we need some special handling for this host tool running eventually on + * Darwin. The Mach-O section handling is a bit different than ELF section + * handling. The differnces in detail are: + * a) we have segments which have sections + * b) we need a API call to get the respective section symbols */ +#if defined(__MACH__) +#include <mach-o/getsect.h> + +#define INIT_SECTION(name) do { \ + unsigned long name ## _len; \ + char *__cat(pstart_,name) = getsectdata("__TEXT", \ + #name, &__cat(name,_len)); \ + char *__cat(pstop_,name) = __cat(pstart_,name) + \ + __cat(name, _len); \ + __cat(__start_,name) = (void *)__cat(pstart_,name); \ + __cat(__stop_,name) = (void *)__cat(pstop_,name); \ + } while (0) +#define SECTION(name) __attribute__((section("__TEXT, " #name))) + +struct devtable **__start___devtable, **__stop___devtable; +#else +#define INIT_SECTION(name) /* no-op for ELF */ +#define SECTION(name) __attribute__((section(#name))) + +/* We construct a table of pointers in an ELF section (pointers generally + * go unpadded by gcc). ld creates boundary syms for us. */ +extern struct devtable *__start___devtable[], *__stop___devtable[]; +#endif /* __MACH__ */ + +#if __GNUC__ == 3 && __GNUC_MINOR__ < 3 +# define __used __attribute__((__unused__)) +#else +# define __used __attribute__((__used__)) +#endif + +/* Add a table entry. We test function type matches while we're here. */ +#define ADD_TO_DEVTABLE(device_id, type, function) \ + static struct devtable __cat(devtable,__LINE__) = { \ + device_id + 0*sizeof((function)((const char *)NULL, \ + (type *)NULL, \ + (char *)NULL)), \ + sizeof(type), (function) }; \ + static struct devtable *SECTION(__devtable) __used \ + __cat(devtable_ptr,__LINE__) = &__cat(devtable,__LINE__) + +#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) + +/* Always 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, "*"); +} + +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_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 */ +/* 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, + unsigned char max, struct module *mod) +{ + 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); + + 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_lo); + } + } + 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", + id->match_flags&USB_DEVICE_ID_MATCH_DEV_SUBCLASS, + id->bDeviceSubClass); + ADD(alias, "dp", + id->match_flags&USB_DEVICE_ID_MATCH_DEV_PROTOCOL, + id->bDeviceProtocol); + ADD(alias, "ic", + id->match_flags&USB_DEVICE_ID_MATCH_INT_CLASS, + id->bInterfaceClass); + ADD(alias, "isc", + id->match_flags&USB_DEVICE_ID_MATCH_INT_SUBCLASS, + id->bInterfaceSubClass); + ADD(alias, "ip", + id->match_flags&USB_DEVICE_ID_MATCH_INT_PROTOCOL, + id->bInterfaceProtocol); + + 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(struct usb_device_id *id, struct module *mod) +{ + unsigned int devlo, devhi; + unsigned char chi, clo, max; + 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; + + /* Figure out if this entry is in bcd or hex format */ + max = 0x9; /* Default to decimal format */ + for (ndigits = 0 ; ndigits < sizeof(id->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 (!(id->idVendor | id->idProduct | 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 > max) /* If we are in bcd mode, truncate if necessary */ + chi = max; + devlo >>= 4; + devhi >>= 4; + + if (devlo == devhi || !ndigits) { + do_usb_entry(id, devlo, ndigits, clo, chi, max, mod); + break; + } + + if (clo > 0x0) + do_usb_entry(id, + incbcd(&devlo, 1, max, + sizeof(id->bcdDevice_lo) * 2), + ndigits, clo, max, max, mod); + + if (chi < max) + do_usb_entry(id, + incbcd(&devhi, -1, max, + sizeof(id->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 = sizeof(struct 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); +} + +/* Looks like: hid:bNvNpN */ +static int do_hid_entry(const char *filename, + struct hid_device_id *id, char *alias) +{ + id->bus = TO_NATIVE(id->bus); + id->vendor = TO_NATIVE(id->vendor); + id->product = TO_NATIVE(id->product); + + sprintf(alias, "hid:b%04X", id->bus); + ADD(alias, "v", id->vendor != HID_ANY_ID, id->vendor); + ADD(alias, "p", id->product != HID_ANY_ID, id->product); + + return 1; +} +ADD_TO_DEVTABLE("hid", struct hid_device_id, do_hid_entry); + +/* Looks like: ieee1394:venNmoNspNverN */ +static int do_ieee1394_entry(const char *filename, + struct ieee1394_device_id *id, char *alias) +{ + id->match_flags = TO_NATIVE(id->match_flags); + id->vendor_id = TO_NATIVE(id->vendor_id); + id->model_id = TO_NATIVE(id->model_id); + id->specifier_id = TO_NATIVE(id->specifier_id); + id->version = TO_NATIVE(id->version); + + strcpy(alias, "ieee1394:"); + ADD(alias, "ven", id->match_flags & IEEE1394_MATCH_VENDOR_ID, + id->vendor_id); + ADD(alias, "mo", id->match_flags & IEEE1394_MATCH_MODEL_ID, + id->model_id); + ADD(alias, "sp", id->match_flags & IEEE1394_MATCH_SPECIFIER_ID, + id->specifier_id); + ADD(alias, "ver", id->match_flags & IEEE1394_MATCH_VERSION, + id->version); + + add_wildcard(alias); + return 1; +} +ADD_TO_DEVTABLE("ieee1394", struct ieee1394_device_id, do_ieee1394_entry); + +/* Looks like: pci:vNdNsvNsdNbcNscNiN. */ +static int do_pci_entry(const char *filename, + struct pci_device_id *id, char *alias) +{ + /* Class field can be divided into these three. */ + unsigned char baseclass, subclass, interface, + baseclass_mask, subclass_mask, interface_mask; + + id->vendor = TO_NATIVE(id->vendor); + id->device = TO_NATIVE(id->device); + id->subvendor = TO_NATIVE(id->subvendor); + id->subdevice = TO_NATIVE(id->subdevice); + id->class = TO_NATIVE(id->class); + id->class_mask = TO_NATIVE(id->class_mask); + + strcpy(alias, "pci:"); + ADD(alias, "v", id->vendor != PCI_ANY_ID, id->vendor); + ADD(alias, "d", id->device != PCI_ANY_ID, id->device); + ADD(alias, "sv", id->subvendor != PCI_ANY_ID, id->subvendor); + ADD(alias, "sd", id->subdevice != PCI_ANY_ID, id->subdevice); + + baseclass = (id->class) >> 16; + baseclass_mask = (id->class_mask) >> 16; + subclass = (id->class) >> 8; + subclass_mask = (id->class_mask) >> 8; + interface = id->class; + interface_mask = id->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, id->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; +} +ADD_TO_DEVTABLE("pci", struct pci_device_id, do_pci_entry); + +/* looks like: "ccw:tNmNdtNdmN" */ +static int do_ccw_entry(const char *filename, + struct ccw_device_id *id, char *alias) +{ + id->match_flags = TO_NATIVE(id->match_flags); + id->cu_type = TO_NATIVE(id->cu_type); + id->cu_model = TO_NATIVE(id->cu_model); + id->dev_type = TO_NATIVE(id->dev_type); + id->dev_model = TO_NATIVE(id->dev_model); + + strcpy(alias, "ccw:"); + ADD(alias, "t", id->match_flags&CCW_DEVICE_ID_MATCH_CU_TYPE, + id->cu_type); + ADD(alias, "m", id->match_flags&CCW_DEVICE_ID_MATCH_CU_MODEL, + id->cu_model); + ADD(alias, "dt", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_TYPE, + id->dev_type); + ADD(alias, "dm", id->match_flags&CCW_DEVICE_ID_MATCH_DEVICE_MODEL, + id->dev_model); + add_wildcard(alias); + return 1; +} +ADD_TO_DEVTABLE("ccw", struct ccw_device_id, do_ccw_entry); + +/* looks like: "ap:tN" */ +static int do_ap_entry(const char *filename, + struct ap_device_id *id, char *alias) +{ + sprintf(alias, "ap:t%02X*", id->dev_type); + return 1; +} +ADD_TO_DEVTABLE("ap", struct ap_device_id, do_ap_entry); + +/* looks like: "css:tN" */ +static int do_css_entry(const char *filename, + struct css_device_id *id, char *alias) +{ + sprintf(alias, "css:t%01X", id->type); + return 1; +} +ADD_TO_DEVTABLE("css", struct css_device_id, do_css_entry); + +/* Looks like: "serio:tyNprNidNexN" */ +static int do_serio_entry(const char *filename, + struct serio_device_id *id, char *alias) +{ + id->type = TO_NATIVE(id->type); + id->proto = TO_NATIVE(id->proto); + id->id = TO_NATIVE(id->id); + id->extra = TO_NATIVE(id->extra); + + strcpy(alias, "serio:"); + ADD(alias, "ty", id->type != SERIO_ANY, id->type); + ADD(alias, "pr", id->proto != SERIO_ANY, id->proto); + ADD(alias, "id", id->id != SERIO_ANY, id->id); + ADD(alias, "ex", id->extra != SERIO_ANY, id->extra); + + add_wildcard(alias); + return 1; +} +ADD_TO_DEVTABLE("serio", struct serio_device_id, do_serio_entry); + +/* looks like: "acpi:ACPI0003 or acpi:PNP0C0B" or "acpi:LNXVIDEO" */ +static int do_acpi_entry(const char *filename, + struct acpi_device_id *id, char *alias) +{ + sprintf(alias, "acpi*:%s:*", id->id); + return 1; +} +ADD_TO_DEVTABLE("acpi", struct acpi_device_id, do_acpi_entry); + +/* looks like: "pnp:dD" */ +static void do_pnp_device_entry(void *symval, unsigned long size, + struct module *mod) +{ + const unsigned long id_size = sizeof(struct pnp_device_id); + const unsigned int count = (size / id_size)-1; + const struct pnp_device_id *devs = symval; + unsigned int i; + + device_id_check(mod->name, "pnp", size, id_size, symval); + + for (i = 0; i < count; i++) { + const char *id = (char *)devs[i].id; + char acpi_id[sizeof(devs[0].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 = 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; + + 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) { + char acpi_id[sizeof(card->devs[0].id)]; + 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, + struct pcmcia_device_id *id, char *alias) +{ + unsigned int i; + + id->match_flags = TO_NATIVE(id->match_flags); + id->manf_id = TO_NATIVE(id->manf_id); + id->card_id = TO_NATIVE(id->card_id); + id->func_id = TO_NATIVE(id->func_id); + id->function = TO_NATIVE(id->function); + id->device_no = TO_NATIVE(id->device_no); + + for (i=0; i<4; i++) { + id->prod_id_hash[i] = TO_NATIVE(id->prod_id_hash[i]); + } + + strcpy(alias, "pcmcia:"); + ADD(alias, "m", id->match_flags & PCMCIA_DEV_ID_MATCH_MANF_ID, + id->manf_id); + ADD(alias, "c", id->match_flags & PCMCIA_DEV_ID_MATCH_CARD_ID, + id->card_id); + ADD(alias, "f", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNC_ID, + id->func_id); + ADD(alias, "fn", id->match_flags & PCMCIA_DEV_ID_MATCH_FUNCTION, + id->function); + ADD(alias, "pfn", id->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO, + id->device_no); + ADD(alias, "pa", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID1, id->prod_id_hash[0]); + ADD(alias, "pb", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID2, id->prod_id_hash[1]); + ADD(alias, "pc", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID3, id->prod_id_hash[2]); + ADD(alias, "pd", id->match_flags & PCMCIA_DEV_ID_MATCH_PROD_ID4, id->prod_id_hash[3]); + + add_wildcard(alias); + return 1; +} +ADD_TO_DEVTABLE("pcmcia", struct pcmcia_device_id, do_pcmcia_entry); + +static int do_of_entry (const char *filename, struct of_device_id *of, char *alias) +{ + int len; + char *tmp; + len = sprintf (alias, "of:N%sT%s", + of->name[0] ? of->name : "*", + of->type[0] ? of->type : "*"); + + if (of->compatible[0]) + sprintf (&alias[len], "%sC%s", + of->type[0] ? "*" : "", + of->compatible); + + /* Replace all whitespace with underscores */ + for (tmp = alias; tmp && *tmp; tmp++) + if (isspace (*tmp)) + *tmp = '_'; + + add_wildcard(alias); + return 1; +} +ADD_TO_DEVTABLE("of", struct of_device_id, do_of_entry); + +static int do_vio_entry(const char *filename, struct vio_device_id *vio, + char *alias) +{ + char *tmp; + + sprintf(alias, "vio:T%sS%s", vio->type[0] ? vio->type : "*", + vio->compat[0] ? vio->compat : "*"); + + /* Replace all whitespace with underscores */ + for (tmp = alias; tmp && *tmp; tmp++) + if (isspace (*tmp)) + *tmp = '_'; + + add_wildcard(alias); + return 1; +} +ADD_TO_DEVTABLE("vio", struct vio_device_id, do_vio_entry); + +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + +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 (arr[i / BITS_PER_LONG] & (1L << (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, struct input_device_id *id, + char *alias) +{ + sprintf(alias, "input:"); + + ADD(alias, "b", id->flags & INPUT_DEVICE_ID_MATCH_BUS, id->bustype); + ADD(alias, "v", id->flags & INPUT_DEVICE_ID_MATCH_VENDOR, id->vendor); + ADD(alias, "p", id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT, id->product); + ADD(alias, "e", id->flags & INPUT_DEVICE_ID_MATCH_VERSION, id->version); + + sprintf(alias + strlen(alias), "-e*"); + if (id->flags & INPUT_DEVICE_ID_MATCH_EVBIT) + do_input(alias, id->evbit, 0, INPUT_DEVICE_ID_EV_MAX); + sprintf(alias + strlen(alias), "k*"); + if (id->flags & INPUT_DEVICE_ID_MATCH_KEYBIT) + do_input(alias, id->keybit, + INPUT_DEVICE_ID_KEY_MIN_INTERESTING, + INPUT_DEVICE_ID_KEY_MAX); + sprintf(alias + strlen(alias), "r*"); + if (id->flags & INPUT_DEVICE_ID_MATCH_RELBIT) + do_input(alias, id->relbit, 0, INPUT_DEVICE_ID_REL_MAX); + sprintf(alias + strlen(alias), "a*"); + if (id->flags & INPUT_DEVICE_ID_MATCH_ABSBIT) + do_input(alias, id->absbit, 0, INPUT_DEVICE_ID_ABS_MAX); + sprintf(alias + strlen(alias), "m*"); + if (id->flags & INPUT_DEVICE_ID_MATCH_MSCIT) + do_input(alias, id->mscbit, 0, INPUT_DEVICE_ID_MSC_MAX); + sprintf(alias + strlen(alias), "l*"); + if (id->flags & INPUT_DEVICE_ID_MATCH_LEDBIT) + do_input(alias, id->ledbit, 0, INPUT_DEVICE_ID_LED_MAX); + sprintf(alias + strlen(alias), "s*"); + if (id->flags & INPUT_DEVICE_ID_MATCH_SNDBIT) + do_input(alias, id->sndbit, 0, INPUT_DEVICE_ID_SND_MAX); + sprintf(alias + strlen(alias), "f*"); + if (id->flags & INPUT_DEVICE_ID_MATCH_FFBIT) + do_input(alias, id->ffbit, 0, INPUT_DEVICE_ID_FF_MAX); + sprintf(alias + strlen(alias), "w*"); + if (id->flags & INPUT_DEVICE_ID_MATCH_SWBIT) + do_input(alias, id->swbit, 0, INPUT_DEVICE_ID_SW_MAX); + return 1; +} +ADD_TO_DEVTABLE("input", struct input_device_id, do_input_entry); + +static int do_eisa_entry(const char *filename, struct eisa_device_id *eisa, + char *alias) +{ + if (eisa->sig[0]) + sprintf(alias, EISA_DEVICE_MODALIAS_FMT "*", eisa->sig); + else + strcat(alias, "*"); + return 1; +} +ADD_TO_DEVTABLE("eisa", struct eisa_device_id, do_eisa_entry); + +/* Looks like: parisc:tNhvNrevNsvN */ +static int do_parisc_entry(const char *filename, struct parisc_device_id *id, + char *alias) +{ + id->hw_type = TO_NATIVE(id->hw_type); + id->hversion = TO_NATIVE(id->hversion); + id->hversion_rev = TO_NATIVE(id->hversion_rev); + id->sversion = TO_NATIVE(id->sversion); + + strcpy(alias, "parisc:"); + ADD(alias, "t", id->hw_type != PA_HWTYPE_ANY_ID, id->hw_type); + ADD(alias, "hv", id->hversion != PA_HVERSION_ANY_ID, id->hversion); + ADD(alias, "rev", id->hversion_rev != PA_HVERSION_REV_ANY_ID, id->hversion_rev); + ADD(alias, "sv", id->sversion != PA_SVERSION_ANY_ID, id->sversion); + + add_wildcard(alias); + return 1; +} +ADD_TO_DEVTABLE("parisc", struct parisc_device_id, do_parisc_entry); + +/* Looks like: sdio:cNvNdN. */ +static int do_sdio_entry(const char *filename, + struct sdio_device_id *id, char *alias) +{ + id->class = TO_NATIVE(id->class); + id->vendor = TO_NATIVE(id->vendor); + id->device = TO_NATIVE(id->device); + + strcpy(alias, "sdio:"); + ADD(alias, "c", id->class != (__u8)SDIO_ANY_ID, id->class); + ADD(alias, "v", id->vendor != (__u16)SDIO_ANY_ID, id->vendor); + ADD(alias, "d", id->device != (__u16)SDIO_ANY_ID, id->device); + add_wildcard(alias); + return 1; +} +ADD_TO_DEVTABLE("sdio", struct sdio_device_id, do_sdio_entry); + +/* Looks like: ssb:vNidNrevN. */ +static int do_ssb_entry(const char *filename, + struct ssb_device_id *id, char *alias) +{ + id->vendor = TO_NATIVE(id->vendor); + id->coreid = TO_NATIVE(id->coreid); + id->revision = TO_NATIVE(id->revision); + + strcpy(alias, "ssb:"); + ADD(alias, "v", id->vendor != SSB_ANY_VENDOR, id->vendor); + ADD(alias, "id", id->coreid != SSB_ANY_ID, id->coreid); + ADD(alias, "rev", id->revision != SSB_ANY_REV, id->revision); + add_wildcard(alias); + return 1; +} +ADD_TO_DEVTABLE("ssb", struct ssb_device_id, do_ssb_entry); + +/* Looks like: bcma:mNidNrevNclN. */ +static int do_bcma_entry(const char *filename, + struct bcma_device_id *id, char *alias) +{ + id->manuf = TO_NATIVE(id->manuf); + id->id = TO_NATIVE(id->id); + id->rev = TO_NATIVE(id->rev); + id->class = TO_NATIVE(id->class); + + strcpy(alias, "bcma:"); + ADD(alias, "m", id->manuf != BCMA_ANY_MANUF, id->manuf); + ADD(alias, "id", id->id != BCMA_ANY_ID, id->id); + ADD(alias, "rev", id->rev != BCMA_ANY_REV, id->rev); + ADD(alias, "cl", id->class != BCMA_ANY_CLASS, id->class); + add_wildcard(alias); + return 1; +} +ADD_TO_DEVTABLE("bcma", struct bcma_device_id, do_bcma_entry); + +/* 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", id->device != VIRTIO_DEV_ANY_ID, id->device); + ADD(alias, "v", id->vendor != VIRTIO_DEV_ANY_ID, id->vendor); + + add_wildcard(alias); + return 1; +} +ADD_TO_DEVTABLE("virtio", struct virtio_device_id, do_virtio_entry); + +/* + * 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, struct hv_vmbus_device_id *id, + char *alias) +{ + int i; + char guid_name[((sizeof(id->guid) + 1)) * 2]; + + for (i = 0; i < (sizeof(id->guid) * 2); i += 2) + sprintf(&guid_name[i], "%02x", id->guid[i/2]); + + strcpy(alias, "vmbus:"); + strcat(alias, guid_name); + + return 1; +} +ADD_TO_DEVTABLE("vmbus", struct hv_vmbus_device_id, do_vmbus_entry); + +/* Looks like: i2c:S */ +static int do_i2c_entry(const char *filename, struct i2c_device_id *id, + char *alias) +{ + sprintf(alias, I2C_MODULE_PREFIX "%s", id->name); + + return 1; +} +ADD_TO_DEVTABLE("i2c", struct i2c_device_id, do_i2c_entry); + +/* Looks like: spi:S */ +static int do_spi_entry(const char *filename, struct spi_device_id *id, + char *alias) +{ + sprintf(alias, SPI_MODULE_PREFIX "%s", id->name); + + return 1; +} +ADD_TO_DEVTABLE("spi", struct spi_device_id, do_spi_entry); + +static const struct dmifield { + const char *prefix; + int field; +} dmi_fields[] = { + { "bvn", DMI_BIOS_VENDOR }, + { "bvr", DMI_BIOS_VERSION }, + { "bd", DMI_BIOS_DATE }, + { "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, struct dmi_system_id *id, + char *alias) +{ + int i, j; + + sprintf(alias, "dmi*"); + + for (i = 0; i < ARRAY_SIZE(dmi_fields); i++) { + for (j = 0; j < 4; j++) { + if (id->matches[j].slot && + id->matches[j].slot == dmi_fields[i].field) { + sprintf(alias + strlen(alias), ":%s*", + dmi_fields[i].prefix); + dmi_ascii_filter(alias + strlen(alias), + id->matches[j].substr); + strcat(alias, "*"); + } + } + } + + strcat(alias, ":"); + return 1; +} +ADD_TO_DEVTABLE("dmi", struct dmi_system_id, do_dmi_entry); + +static int do_platform_entry(const char *filename, + struct platform_device_id *id, char *alias) +{ + sprintf(alias, PLATFORM_MODULE_PREFIX "%s", id->name); + return 1; +} +ADD_TO_DEVTABLE("platform", struct platform_device_id, do_platform_entry); + +static int do_mdio_entry(const char *filename, + struct mdio_device_id *id, char *alias) +{ + int i; + + alias += sprintf(alias, MDIO_MODULE_PREFIX); + + for (i = 0; i < 32; i++) { + if (!((id->phy_id_mask >> (31-i)) & 1)) + *(alias++) = '?'; + else if ((id->phy_id >> (31-i)) & 1) + *(alias++) = '1'; + else + *(alias++) = '0'; + } + + /* Terminate the string */ + *alias = 0; + + return 1; +} +ADD_TO_DEVTABLE("mdio", struct mdio_device_id, do_mdio_entry); + +/* Looks like: zorro:iN. */ +static int do_zorro_entry(const char *filename, struct zorro_device_id *id, + char *alias) +{ + id->id = TO_NATIVE(id->id); + strcpy(alias, "zorro:"); + ADD(alias, "i", id->id != ZORRO_WILDCARD, id->id); + return 1; +} +ADD_TO_DEVTABLE("zorro", struct zorro_device_id, do_zorro_entry); + +/* looks like: "pnp:dD" */ +static int do_isapnp_entry(const char *filename, + struct isapnp_device_id *id, char *alias) +{ + sprintf(alias, "pnp:d%c%c%c%x%x%x%x*", + 'A' + ((id->vendor >> 2) & 0x3f) - 1, + 'A' + (((id->vendor & 3) << 3) | ((id->vendor >> 13) & 7)) - 1, + 'A' + ((id->vendor >> 8) & 0x1f) - 1, + (id->function >> 4) & 0x0f, id->function & 0x0f, + (id->function >> 12) & 0x0f, (id->function >> 8) & 0x0f); + return 1; +} +ADD_TO_DEVTABLE("isapnp", struct isapnp_device_id, do_isapnp_entry); + +/* + * 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, + struct amba_id *id, char *alias) +{ + unsigned int digit; + char *p = alias; + + if ((id->id & id->mask) != id->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->id, id->mask); + + p += sprintf(alias, "amba:d"); + for (digit = 0; digit < 8; digit++) + append_nibble_mask(&p, + (id->id >> (4 * (7 - digit))) & 0xf, + (id->mask >> (4 * (7 - digit))) & 0xf); + + return 1; +} +ADD_TO_DEVTABLE("amba", struct amba_id, do_amba_entry); + +/* LOOKS like x86cpu:vendor:VVVV:family:FFFF:model:MMMM: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, struct x86_cpu_id *id, + char *alias) +{ + id->feature = TO_NATIVE(id->feature); + id->family = TO_NATIVE(id->family); + id->model = TO_NATIVE(id->model); + id->vendor = TO_NATIVE(id->vendor); + + strcpy(alias, "x86cpu:"); + ADD(alias, "vendor:", id->vendor != X86_VENDOR_ANY, id->vendor); + ADD(alias, ":family:", id->family != X86_FAMILY_ANY, id->family); + ADD(alias, ":model:", id->model != X86_MODEL_ANY, id->model); + strcat(alias, ":feature:*"); + if (id->feature != X86_FEATURE_ANY) + sprintf(alias + strlen(alias), "%04X*", id->feature); + return 1; +} +ADD_TO_DEVTABLE("x86cpu", struct x86_cpu_id, do_x86cpu_entry); + +/* 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, + void *function, + struct module *mod) +{ + unsigned int i; + char alias[500]; + int (*do_entry)(const char *, void *entry, char *alias) = function; + + 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); + } + } +} + +/* 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; + 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 <prefix>__mod_XXX_device_table. */ + name = strstr(symname, "__mod_"); + if (!name) + return; + name += strlen("__mod_"); + namelen = strlen(name); + if (namelen < strlen("_device_table")) + return; + if (strcmp(name + namelen - strlen("_device_table"), "_device_table")) + return; + namelen -= strlen("_device_table"); + + /* 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 = (void *)info->hdr + + info->sechdrs[get_secindex(info, sym)].sh_offset + + sym->st_value; + } + + /* 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, "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 { + struct devtable **p; + INIT_SECTION(__devtable); + + for (p = __start___devtable; p < __stop___devtable; p++) { + if (sym_is(name, namelen, (*p)->device_id)) { + do_table(symval, sym->st_size, (*p)->id_size, + (*p)->device_id, (*p)->function, 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); +} |