csx_RequestConfiguration

- configure the PC Card and socket

Synopsis

#include <sys/pccard.h>

int32_t csx_RequestConfiguration(client_handle_t ch, config_req_t *cr);

Interface Level

Solaris DDI Specific (Solaris DDI)

Parameters

ch

Client handle returned from csx_RegisterClient(9F).

cr

Pointer to a config_req_t structure.

Description

This function configures the PC Card and socket. It must be used by clients that require I/O or IRQ resources for their PC Card.

csx_RequestIO(9F) and csx_RequestIRQ(9F) must be used before calling this function to specify the I/O and IRQ requirements for the PC Card and socket if necessary. csx_RequestConfiguration() establishes the configuration in the socket adapter and PC Card, and it programs the Base and Limit registers of multi-function PC Cards if these registers exist. The values programmed into these registers depend on the IO requirements of this configuration.

Structure Members

The structure members of config_req_t are:

uint32_t     Socket;          /* socket number */
uint32_t     Attributes;      /* configuration attributes */
uint32_t     Vcc;             /* Vcc value */
uint32_t     Vpp1;            /* Vpp1 value */
uint32_t     Vpp2;            /* Vpp2 value */
uint32_t     IntType;         /* socket interface type - mem or IO */
uint32_t     ConfigBase;      /* offset from start of AM space */
uint32_t     Status;          /* value to write to STATUS register */
uint32_t     Pin;             /* value to write to PRR */
uint32_t     Copy;            /* value to write to COPY register */
uint32_t     ConfigIndex;     /* value to write to COR */
uint32_t     Present;         /* which config registers present */
uint32_t     ExtendedStatus;  /* value to write to EXSTAT register */

The fields are defined as follows:

Socket

Not used in Solaris, but for portability with other Card Services implementations, it should be set to the logical socket number.

Attributes

This field is bit-mapped. It indicates whether the client wishes the IRQ resources to be enabled and whether Card Services should ignore the VS bits on the socket interface. The following bits are defined:

CONF_ENABLE_IRQ_STEERING

Enable IRQ Steering. Set to connect the PC Card IREQ line to a system interrupt previously selected by a call to csx_RequestIRQ(9F). If CONF_ENABLE_IRQ_STEERING is set, once csx_RequestConfiguration() has successfully returned, the client may start receiving IRQ callbacks at the IRQ callback handler established in the call to csx_RequestIRQ(9F).

CONF_VSOVERRIDE

Override VS pins. After card insertion and prior to the first successful csx_RequestConfiguration(), the voltage levels applied to the card shall be those indicated by the card's physical key and/or the VS[2:1] voltage sense pins. For Low Voltage capable host systems (hosts which are capable of VS pin decoding), if a client desires to apply a voltage not indicated by the VS pin decoding, then CONF_VSOVERRIDE must be set in the Attributes field; otherwise, CS_BAD_VCC shall be returned.

Vcc, Vpp1, Vpp2

These fields all represent voltages expressed in tenths of a volt. Values from zero (0) to 25.5 volts may be set. To be valid, the exact voltage must be available from the system. PC Cards indicate multiple Vcc voltage capability in their CIS via the CISTPL_CFTABLE_ENTRY tuple. After card insertion, Card Services processes the CIS, and when multiple Vcc voltage capability is indicated, Card Services will allow the client to apply Vcc voltage levels which are contrary to the VS pin decoding without requiring the client to set CONF_VSOVERRIDE.

IntType

This field is bit-mapped. It indicates how the socket should be configured. The following bits are defined:

SOCKET_INTERFACE_MEMORY

Memory only interface.

SOCKET_INTERFACE_MEMORY_AND_IO

Memory and I/O interface.

ConfigBase

This field is the offset in bytes from the beginning of attribute memory of the configuration registers.

Present

This field identifies which of the configuration registers are present. If present, the corresponding bit is set. This field is bit-mapped as follows:

CONFIG_OPTION_REG_PRESENT

Configuration Option Register (COR) present

CONFIG_STATUS_REG_PRESENT

Configuration Status Register (CCSR) present

CONFIG_PINREPL_REG_PRESENT

Pin Replacement Register (PRR) present

CONFIG_COPY_REG_PRESENT

Socket and Copy Register (SCR) present

CONFIG_ESR_REG_PRESENT

Extended Status Register (ESR) present

Status, Pin, Copy, ExtendedStatus

These fields represent the initial values that should be written to those registers if they are present, as indicated by the Present field.

The Pin field is also used to inform Card Services which pins in the PC Card's PRR (Pin Replacement Register) are valid. Only those bits which are set are considered valid. This affects how status is returned by the csx_GetStatus(9F) function. If a particular signal is valid in the PRR, both the mask (STATUS) bit and the change (EVENT) bit must be set in the Pin field. The following PRR bit definitions are provided for client use:

PRR_WP_STATUS

WRITE PROTECT mask

PRR_READY_STATUS

READY mask

PRR_BVD2_STATUS

BVD2 mask

PRR_BVD1_STATUS

BVD1 mask

PRR_WP_EVENT

WRITE PROTECT changed

PRR_READY_EVENT

READY changed

PRR_BVD2_EVENT

BVD2 changed

PRR_BVD1_EVENT

BVD1 changed

ConfigIndex

This field is the value written to the COR (Configuration Option Register) for the configuration index required by the PC Card. Only the least significant six bits of the ConfigIndex field are significant; the upper two (2) bits are ignored. The interrupt type in the COR is always set to level mode by Card Services.

Return Values

CS_SUCCESS

Successful operation.

CS_BAD_HANDLE

Client handle is invalid or csx_RequestConfiguration() not done.

CS_BAD_SOCKET

Error in getting or setting socket hardware parameters.

CS_BAD_VCC

Requested Vcc is not available on socket.

CS_BAD_VPP

Requested Vpp is not available on socket.

CS_NO_CARD

No PC Card in socket.

CS_BAD_TYPE

I/O and memory interface not supported on socket.

CS_CONFIGURATION_LOCKED

csx_RequestConfiguration() already done.

CS_UNSUPPORTED_FUNCTION

No PCMCIA hardware installed.

Context

This function may be called from user or kernel context.

See Also

csx_AccessConfigurationRegister(9F), csx_GetStatus(9F), csx_RegisterClient(9F), csx_ReleaseConfiguration(9F), csx_RequestIO(9F), csx_RequestIRQ(9F)

PC Card 95 Standard, PCMCIA/JEIDA