NAME

ddi_io_get8, ddi_io_get16, ddi_io_get32 - read data from the mapped device register in I/O space

SYNOPSIS

#include <sys/ddi.h>
#include <sys/sunddi.h>
uint8_t ddi_io_get8(ddi_acc_handle_t handle, uint8_t *dev_addr);

uint16_t ddi_io_get16(ddi_acc_handle_t handle, uint16_t  *dev_addr);

uint32_t ddi_io_get32(ddi_acc_handle_t handle, uint32_t  *dev_addr);

INTERFACE LEVEL

illumos DDI specific (illumos DDI). The ddi_io_get8(), ddi_io_get16(), ddi_io_get32(), ddi_io_getb(), ddi_io_getl(), and ddi_io_getw() functions are obsolete. The ddi_get8(9F) function replaces ddi_io_get8(). The ddi_get16(9F) function replaces ddi_io_get16(). The ddi_get32(9F) function replaces ddi_io_get32().

PARAMETERS

handle

Data access handle returned from setup calls, such as ddi_regs_map_setup(9F).

dev_addr

Device address.

DESCRIPTION

These routines generate a read of various sizes from the device address, dev_addr, in I/O space. The ddi_io_get8(), ddi_io_get16(), and ddi_io_get32() functions read 8 bits, 16 bits, and 32 bits of data, respectively, from the device address, dev_addr.

Each individual datum will automatically be translated to maintain a consistent view between the host and the device based on the encoded information in the data access handle. The translation may involve byte-swapping if the host and the device have incompatible endian characteristics.

CONTEXT

These functions can be called from user, kernel, or interrupt context.

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Interface Stability	Obsolete