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Kernel Functions for Drivers

csx_Parse_CISTPL_DEVICEGEO(9F)

INTERFACE LEVEL
PARAMETERS
DESCRIPTION
STRUCTURE MEMBERS
RETURN VALUES
CONTEXT
SEE ALSO

NAME

csx_Parse_CISTPL_DEVICEGEO - parse the Device Geo tuple

SYNOPSIS

#include <sys/pccard.h> int32_t csx_Parse_CISTPL_DEVICEGEO(client_handle_t ch, tuple_t *tp, cistpl_devicegeo_t *pt);

PARAMETERS

ch: Client handle returned from csx_RegisterClient(9F).
tp: Pointer to a tuple_t structure (see tuple(9S)) returned by a call to csx_GetFirstTuple(9F) or csx_GetNextTuple(9F).
pt: Pointer to a cistpl_devicegeo_t structure which contains the parsed Device Geo tuple information upon return from this function.

DESCRIPTION

This function parses the Device Geo tuple, CISTPL_DEVICEGEO, into a form usable by PC Card drivers.

The CISTPL_DEVICEGEO tuple describes the device geometry of common memory partitions.

The structure members of cistpl_devicegeo_t are:

uint32_t info[CISTPL_DEVICEGEO_MAX_PARTITIONS].bus; uint32_t info[CISTPL_DEVICEGEO_MAX_PARTITIONS].ebs; uint32_t info[CISTPL_DEVICEGEO_MAX_PARTITIONS].rbs; uint32_t info[CISTPL_DEVICEGEO_MAX_PARTITIONS].wbs; uint32_t info[CISTPL_DEVICEGEO_MAX_PARTITIONS].part; uint32_t info[CISTPL_DEVICEGEO_MAX_PARTITIONS].hwil;

The fields are defined as follows:

info[CISTPL_DEVICEGEO_MAX_PARTITIONS].bus: This field indicates the card interface width in bytes for the given partition.
info[CISTPL_DEVICEGEO_MAX_PARTITIONS].ebs: This field indicates the minimum erase block size for the given partition.
info[CISTPL_DEVICEGEO_MAX_PARTITIONS].rbs: This field indicates the minimum read block size for the given partition.
info[CISTPL_DEVICEGEO_MAX_PARTITIONS].wbs: This field indicates the minimum write block size for the given partition.
info[CISTPL_DEVICEGEO_MAX_PARTITIONS].part: This field indicates the segment partition subdivisions for the given partition.
info[CISTPL_DEVICEGEO_MAX_PARTITIONS].hwil: This field indicates the hardware interleave

RETURN VALUES

CS_SUCCESS: Successful operation.
CS_BAD_HANDLE: Client handle is invalid.
CS_UNKNOWN_TUPLE: Parser does not know how to parse tuple.
CS_NO_CARD: No PC Card in socket.
CS_NO_CIS: No Card Information Structure (CIS) on PC Card.
CS_UNSUPPORTED_FUNCTION: No PCMCIA hardware installed.

CONTEXT

This function may be called from user or kernel context.