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

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

#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);

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().

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


Base device address.


Data to be written to the device.

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.

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

See attributes(5) for descriptions of the following attributes:

Interface Stability Obsolete

isa(4), ddi_io_get8(9F), ddi_io_rep_get8(9F), ddi_io_rep_put8(9F), ddi_put8(9F), ddi_put16(9F), ddi_put32(9F), ddi_regs_map_setup(9F), ddi_device_acc_attr(9S)
November 1, 2005 OmniOS