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    ddi_putb(9F) manual page Table of Contents

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.

See Also

ddi_getb(9F) , ddi_regs_map_free(9F) , ddi_regs_map_setup(9F) , ddi_rep_getb(9F) , ddi_rep_putb(9F) , ddi_device_acc_attr(9S)

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