diff options
Diffstat (limited to 'freebsd/sys/sys/module.h')
| -rw-r--r-- | freebsd/sys/sys/module.h | 58 |
1 files changed, 54 insertions, 4 deletions
diff --git a/freebsd/sys/sys/module.h b/freebsd/sys/sys/module.h index 782770a7..07464fc6 100644 --- a/freebsd/sys/sys/module.h +++ b/freebsd/sys/sys/module.h @@ -35,6 +35,7 @@ #define MDT_DEPEND 1 /* argument is a module name */ #define MDT_MODULE 2 /* module declaration */ #define MDT_VERSION 3 /* module version(s) */ +#define MDT_PNP_INFO 4 /* Plug and play hints record */ #define MDT_STRUCT_VERSION 1 /* version of metadata structure */ #define MDT_SETNAME "modmetadata_set" @@ -70,7 +71,7 @@ typedef union modspecific { } modspecific_t; /* - * Module dependency declarartion + * Module dependency declaration */ struct mod_depend { int md_ver_minimum; @@ -88,10 +89,19 @@ struct mod_version { struct mod_metadata { int md_version; /* structure version MDTV_* */ int md_type; /* type of entry MDT_* */ - void *md_data; /* specific data */ + const void *md_data; /* specific data */ const char *md_cval; /* common string label */ }; +struct mod_pnp_match_info +{ + const char *descr; /* Description of the table */ + const char *bus; /* Name of the bus for this table */ + const void *table; /* Pointer to pnp table */ + int entry_len; /* Length of each entry in the table (may be */ + /* longer than descr describes). */ + int num_entry; /* Number of entries in the table */ +}; #ifdef _KERNEL #include <sys/linker_set.h> @@ -106,7 +116,8 @@ struct mod_metadata { DATA_SET(modmetadata_set, _mod_metadata##uniquifier) #define MODULE_DEPEND(module, mdepend, vmin, vpref, vmax) \ - static struct mod_depend _##module##_depend_on_##mdepend = { \ + static struct mod_depend _##module##_depend_on_##mdepend \ + __section(".data") = { \ vmin, \ vpref, \ vmax \ @@ -146,12 +157,51 @@ struct mod_metadata { DECLARE_MODULE_WITH_MAXVER(name, data, sub, order, __FreeBSD_version) #define MODULE_VERSION(module, version) \ - static struct mod_version _##module##_version = { \ + static struct mod_version _##module##_version \ + __section(".data") = { \ version \ }; \ MODULE_METADATA(_##module##_version, MDT_VERSION, \ &_##module##_version, #module) +/** + * Generic macros to create pnp info hints that modules may export + * to allow external tools to parse their internal device tables + * to make an informed guess about what driver(s) to load. + */ +#define MODULE_PNP_INFO(d, b, unique, t, l, n) \ + static const struct mod_pnp_match_info _module_pnp_##b##_##unique = { \ + .descr = d, \ + .bus = #b, \ + .table = t, \ + .entry_len = l, \ + .num_entry = n \ + }; \ + MODULE_METADATA(_md_##b##_pnpinfo_##unique, MDT_PNP_INFO, \ + &_module_pnp_##b##_##unique, #b); +/** + * descr is a string that describes each entry in the table. The general + * form is (TYPE:pnp_name[/pnp_name];)* + * where TYPE is one of the following: + * U8 uint8_t element + * V8 like U8 and 0xff means match any + * G16 uint16_t element, any value >= matches + * L16 uint16_t element, any value <= matches + * M16 uint16_t element, mask of which of the following fields to use. + * U16 uint16_t element + * V16 like U16 and 0xffff means match any + * U32 uint32_t element + * V32 like U32 and 0xffffffff means match any + * W32 Two 16-bit values with first pnp_name in LSW and second in MSW. + * Z pointer to a string to match exactly + * D like Z, but is the string passed to device_set_descr() + * P A pointer that should be ignored + * E EISA PNP Identifier (in binary, but bus publishes string) + * K Key for whole table. pnp_name=value. must be last, if present. + * + * The pnp_name "#" is reserved for other fields that should be ignored. + */ + extern struct sx modules_sx; #define MOD_XLOCK sx_xlock(&modules_sx) |