ddi_putb(9F)

NAME

ddi_putb, ddi_putw, ddi_putl, ddi_putll − write data to the mapped memory address, device register or allocated DMA memory address

SYNOPSIS

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

void ddi_putb(ddi_acc_handle_t handle, uchar_t ∗dev_addr, uchar_t value);

void ddi_putw(ddi_acc_handle_t handle, ushort_t ∗dev_addr, ushort_t value);

void ddi_putl(ddi_acc_handle_t handle, ulong_t ∗dev_addr, ulong_t value);

void ddi_putll(ddi_acc_handle_t handle, unsigned long long ∗dev_addr,

unsigned long long value);

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI).

ARGUMENTS

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

value The data to be written to the device.

dev_addr Base device address.

DESCRIPTION

These routines generate a write of various sizes to the mapped memory or device register. The ddi_putb(), ddi_putw(), ddi_putl(), and ddi_putll() functions write 8 bits, 16 bits, 32 bits and 64 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.

Museum

Related Articles