DDI_IO_PUT8(9F) Kernel Functions for Drivers DDI_IO_PUT8(9F)


NAME


ddi_io_put8, ddi_io_put16, ddi_io_put32 - write data to the mapped device
register in I/O space

SYNOPSIS


#include <sys/ddi.h>
#include <sys/sunddi.h>


void ddi_io_put8(ddi_acc_handle_t handle, uint8_t *dev_addr,
uint8_t value);


void ddi_io_put16(ddi_acc_handle_t handle, uint16_t *dev_addr,
uint16_t value);


void ddi_io_put32(ddi_acc_handle_t handle, uint32_t *dev_addr,
uint32_t value);


INTERFACE LEVEL


illumos DDI specific (illumos DDI). The ddi_io_put8(), ddi_io_put16(),
ddi_io_put32(), ddi_io_putb(), ddi_io_putl(), and ddi_io_putw() functions
are obsolete. The ddi_put8(9F) function replaces ddi_io_put8(). The
ddi_put16(9F) function replaces ddi_io_put16(). The ddi_put32(9F)
function replaces ddi_io_put32().

PARAMETERS


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


dev_addr
Base device address.


value
Data to be written to the device.


DESCRIPTION


These routines generate a write of various sizes to the device address,
dev_addr, in I/O space. The ddi_io_put8(), ddi_io_put16(), and
ddi_io_put32() functions write 8 bits, 16 bits, and 32 bits of data,
respectively, to 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 |
+--------------------+-----------------+

SEE ALSO


isa(5), ddi_io_get8(9F), ddi_io_rep_get8(9F), ddi_io_rep_put8(9F),
ddi_put16(9F), ddi_put32(9F), ddi_put8(9F), ddi_regs_map_setup(9F),
ddi_device_acc_attr(9S)


illumos November 1, 2005 DDI_IO_PUT8(9F)