illumos: manual page: csx_ModifyConfiguration.9f

CSX_MODIFYCONFIGURATION(9F) Kernel Functions for Drivers

NAME

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

illumos DDI Specific (illumos 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 illumos, 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.

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.

July 19, 1996 CSX_MODIFYCONFIGURATION(9F)