SVR5 and SCO OpenServer 5

AccessConfigurationRegister(D4pccard)

AccessConfigurationRegister -- PC card configuration register structure

Syntax

   #include <sys/lcs.h>
   #include <sys/lss.h>

Description

The AccessConfigurationRegister structure is used by PC Card clients to read or write PC Card configuration registers.

Structure definition

The AccessConfigurationRegister data structure contains the following members:

   unsigned short  	usSocket;
   unsigned char   	ucAction;
   unsigned char   	ucOffset;
   unsigned long   	ulValue;
   unsigned char   	ucRegister;

Structure members

The members are defined as:

usSocket

Two bytes. The high byte defines the function, the low byte defines the logical socket.

ucAction

Defines the action to take. Valid values are:

1: Write ulValue to configuration register.
0: Update ulValue from RequestConfiguration(D4pccard).

ucOffset

Relative to register base in the RequestConfiguration(D4pccard) structure. 1 byte.

ulValue

Value to read or write. 4 bytes.

ucRegister

Specifies configuration space. 1 byte.

Usage

This structure is the only way clients can access Cardbus PC Card registers in configuration space.

Hardware applicability

All

Version applicability

pccard: 1, 2, 3

References

AccessConfigurationRegister(D3pccard), RequestConfiguration(D4pccard)