NAME

csx_ModifyWindow - modify window attributes

SYNOPSIS

#include <sys/pccard.h>
int32_t csx_ModifyWindow(window_handle_t wh, modify_win_t *mw);

INTERFACE LEVEL

illumos DDI Specific (illumos DDI)

PARAMETERS

Window handle returned from csx_RequestWindow(9F).

Pointer to a modify_win_t structure.

DESCRIPTION

This function modifies the attributes of a window allocated by the csx_RequestWindow(9F) function.

Only some of the window attributes or the access speed field may be modified by this request. The csx_MapMemPage(9F) function is also used to set the offset into PC Card memory to be mapped into system memory for paged windows. The csx_RequestWindow(9F) and csx_ReleaseWindow(9F) functions must be used to change the window base or size.

STRUCTURE MEMBERS

The structure members of modify_win_t are:

uint32_t       Attributes;          /* window flags */
uint32_t       AccessSpeed;         /* window access speed */

The fields are defined as follows:

Attributes

This field is bit-mapped and defined as follows:

WIN_MEMORY_TYPE_CM

Window points to Common Memory area. Set this to map the window to Common Memory.

WIN_MEMORY_TYPE_AM

Window points to Attribute Memory area. Set this to map the window to Attribute Memory.

WIN_ENABLE

Enable Window. The client must set this to enable the window.

WIN_ACCESS_SPEED_VALID

AccessSpeed valid. The client must set this when the AccessSpeed field has a value that the client wants set for the window.

AccessSpeed

The bit definitions for this field use the format of the extended speed byte of the Device ID tuple. If the mantissa is 0 (noted as reserved in the PC Card 95 Standard), the lower bits are a binary code representing a speed from the list below. Numbers in the first column are codes; items in the second column are speeds.

Reserved: do not use

250 nsec

200 nsec

150 nsec

100 nsec

5 - 7

Reserved: do not use

It is recommended that clients use the csx_ConvertSpeed(9F) function to generate the appropriate AccessSpeed values rather than manually perturbing the AccessSpeed field.

RETURN VALUES

CS_SUCCESS

Successful operation.

CS_BAD_HANDLE

Window handle is invalid.

CS_NO_CARD

No PC Card in socket.

CS_BAD_OFFSET

Error getting/setting window hardware parameters.

CS_BAD_WINDOW

Error getting/setting window hardware parameters.

CS_BAD_SPEED

AccessSpeed is invalid.

CS_UNSUPPORTED_FUNCTION

No PCMCIA hardware installed.

CONTEXT

This function may be called from user or kernel context.