INTERFACE bhnd_erom;
HEADER {
/* forward declarations */
struct bhnd_erom_io;
};
/**
* Probe to see if this device enumeration class supports the bhnd bus at
* @p addr, returning a standard newbus device probe result (see BUS_PROBE_*)
* and the probed chip identification.
*
* @param cls The erom class to probe.
* @param eio A bus I/O instance, configured with a mapping of
* the first bus core.
* @param base_addr Address of the first bus core.
* @param hint Hint used to identify the device. If chipset
* supports standard chip identification registers
* within the first core, this parameter should be
* NULL.
* @param[out] cid On success, the probed chip identifier.
*
* @retval 0 if this is the only possible device enumeration
* parser for the probed bus.
* @retval negative if the probe succeeds, a negative value should be
* returned; the parser returning the highest negative
* value will be selected to handle device enumeration.
* @retval ENXIO If the bhnd bus type is not handled by this parser.
* @retval positive if an error occurs during probing, a regular unix error
* code should be returned.
*/
STATICMETHOD int probe {
bhnd_erom_class_t *cls;
struct bhnd_erom_io *eio;
const struct bhnd_chipid *hint;
struct bhnd_chipid *cid;
};
/**
* Initialize a device enumeration table parser.
*
* @param erom The erom parser to initialize.
* @param cid The device's chip identifier.
* @param eio The bus I/O instance to use when reading the device
* enumeration table. On success, the erom parser assumes
* ownership of this instance.
* @retval 0 success
* @retval non-zero if an error occurs initializing the EROM parser,
* a regular unix error code will be returned.
*/
METHOD int init {
bhnd_erom_t *erom;
const struct bhnd_chipid *cid;
struct bhnd_erom_io *eio;
};
/**
* Release all resources held by @p erom.
*
* @param erom An erom parser instance previously initialized via
* BHND_EROM_INIT() or BHND_EROM_INIT_STATIC().
*/
METHOD void fini {
bhnd_erom_t *erom;
};
/**
* Parse all cores descriptors, returning the array in @p cores and the count
* in @p num_cores.
*
* The memory allocated for the table must be freed via
* BHND_EROM_FREE_CORE_TABLE().
*
* @param erom The erom parser to be queried.
* @param[out] cores The table of parsed core descriptors.
* @param[out] num_cores The number of core records in @p cores.
*
* @retval 0 success
* @retval non-zero if an error occurs, a regular unix error code will
* be returned.
*/
METHOD int get_core_table {
bhnd_erom_t *erom;
struct bhnd_core_info **cores;
u_int *num_cores;
};
/**
* Free any memory allocated in a previous call to BHND_EROM_GET_CORE_TABLE().
*
* @param erom The erom parser instance.
* @param cores A core table allocated by @p erom.
*/
METHOD void free_core_table {
bhnd_erom_t *erom;
struct bhnd_core_info *cores;
};
/**
* Locate the first core table entry in @p erom that matches @p desc.
*
* @param erom The erom parser to be queried.
* @param desc A core match descriptor.
* @param[out] core On success, the matching core info record.
*
* @retval 0 success
* @retval ENOENT No core matching @p desc was found.
* @retval non-zero Reading or parsing failed.
*/
METHOD int lookup_core {
bhnd_erom_t *erom;
const struct bhnd_core_match *desc;
struct bhnd_core_info *core;
};
/**
* Locate the first core table entry in @p erom that matches @p desc,
* and return the specified port region's base address and size.
*
* If a core matching @p desc is not found, or the requested port region
* is not mapped to the matching core, ENOENT is returned.
*
* @param erom The erom parser to be queried.
* @param desc A core match descriptor.
* @param type The port type to search for.
* @param port The port to search for.
* @param region The port region to search for.
* @param[out] core If not NULL, will be populated with the matched core
* info record on success.
* @param[out] addr On success, the base address of the port region.
* @param[out] size On success, the total size of the port region.
*
* @retval 0 success
* @retval ENOENT No core matching @p desc was found.
* @retval ENOENT No port region matching @p type, @p port, and @p region
* was found.
* @retval non-zero Reading or parsing failed.
*/
METHOD int lookup_core_addr {
bhnd_erom_t *erom;
const struct bhnd_core_match *desc;
bhnd_port_type type;
u_int port;
u_int region;
struct bhnd_core_info *core;
bhnd_addr_t *addr;
bhnd_size_t *size;
};
/**
* Enumerate and print all EROM table entries.
*
* @param erom The erom parser to be enumerated.
*
* @retval 0 success
* @retval non-zero If an error occurs reading the EROM table, a regular
* unix error code will be returned.
*/
METHOD int dump {
bhnd_erom_t *erom;
};
