csx_ModifyConfiguration

- modify socket and PC Card Configuration Register

Synopsis

#include <sys/pccard.h> 

int32_t csx_ModifyConfiguration(client_handle_t ch, modify_config_t *mc);

Interface Level

Solaris DDI Specific (Solaris DDI)

Parameters

ch

Client handle returned from csx_RegisterClient(9F).

mc

Pointer to a modify_config_t structure.

Description

This function allows a socket and PC Card configuration to be modified. This function can only modify a configuration requested via csx_RequestConfiguration(9F).

Structure Members

The structure members of modify_config_t are:

uint32_t     Socket;        /* socket number */
uint32_t     Attributes;    /* attributes to modify */
uint32_t     Vpp1;          /* Vpp1 value */
uint32_t     Vpp2;          /* Vpp2 value */

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. The following bits are defined:

CONF_ENABLE_IRQ_STEERING

Enable IRQ steering. Set to connect the PC Card IREQ line to a previously selected system interrupt.

CONF_IRQ_CHANGE_VALID

IRQ change valid. Set to request the IRQ steering enable to be changed.

CONF_VPP1_CHANGE_VALID

Vpp1 change valid. These bits are set to request a change to the corresponding voltage level for the PC Card.

CONF_VPP2_CHANGE_VALID

Vpp2 change valid. These bits are set to request a change to the corresponding voltage level for the PC Card.

CONF_VSOVERRIDE

Override VS pins. For Low Voltage keyed cards, must be set if a client desires to apply a voltage inappropriate for this card to any pin. After card insertion and prior to the first csx_RequestConfiguration(9F) call for this client, the voltage levels applied to the card will be those specified by the Card Interface Specification. (See WARNINGS.)

Vpp1, Vpp2

Represent voltages expressed in tenths of a volt. Values from 0 to 25.5 volts may be set. To be valid, the exact voltage must be available from the system. To be compliant with the PC Card 95 Standard, PCMCIA/JEIDA, systems must always support 5.0 volts for both Vcc and Vpp. (See WARNINGS.)

Return Values

CS_SUCCESS

Successful operation.

CS_BAD_HANDLE

Client handle is invalid or csx_RequestConfiguration(9F) not done.

CS_BAD_SOCKET

Error getting/setting socket hardware parameters.

CS_BAD_VPP

Requested Vpp is not available on socket.

CS_NO_CARD

No PC Card in socket.

CS_UNSUPPORTED_FUNCTION

No PCMCIA hardware installed.

Context

This function may be called from user or kernel context.

See Also

csx_RegisterClient(9F), csx_ReleaseConfiguration(9F), csx_ReleaseIO(9F), csx_ReleaseIRQ(9F), csx_RequestConfiguration(9F), csx_RequestIO(9F), csx_RequestIRQ(9F)

PC Card 95 Standard, PCMCIA/JEIDA

Warnings

1. CONF_VSOVERRIDE is provided for clients that have a need to override the information provided in the CIS. The client must exercise caution when setting this as it overrides any voltage level protection provided by Card Services.

2. Using csx_ModifyConfiguration() to set Vpp to 0 volts may result in the loss of a PC Card's state. Any client setting Vpp to 0 volts is responsible for insuring that the PC Card's state is restored when power is re-applied to the card.

Notes

Mapped IO addresses can only be changed by first releasing the current configuration and IO resources with csx_ReleaseConfiguration(9F) and csx_ReleaseIO(9F), requesting new IO resources and a new configuration with csx_RequestIO(9F), followed by csx_RequestConfiguration(9F).

IRQ priority can only be changed by first releasing the current configuration and IRQ resources with csx_ReleaseConfiguration(9F) and csx_ReleaseIRQ(9F), requesting new IRQ resources and a new configuration with csx_RequestIRQ(9F), followed by csx_RequestConfiguration(9F).

Vcc can not be changed using csx_ModifyConfiguration(). Vcc may be changed by first invoking csx_ReleaseConfiguration(9F), followed by csx_RequestConfiguration(9F) with a new Vcc value.