Content-type: text/html Man page of ddi_put8

ddi_put8

Section: Kernel Functions for Drivers (9F)
Updated: 18 Nov 2004
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NAME

ddi_put8, ddi_put16, ddi_put32, ddi_put64, ddi_putb, ddi_putl, ddi_putll, ddi_putw - 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_put8(ddi_acc_handle_t handle, uint8_t *dev_addr, uint8_t value);

void ddi_put16(ddi_acc_handle_t handle, uint16_t *dev_addr, uint16_t value);

void ddi_put32(ddi_acc_handle_t handle, uint32_t *dev_addr, uint32_t value);

void ddi_put64(ddi_acc_handle_t handle, uint64_t *dev_addr, uint64_t value);  

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI).  

PARAMETERS

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_put8(), ddi_put16(), ddi_put32(), and ddi_put64() 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.

For certain bus types, you can call these DDI functions from a high-interrupt context. These types include ISA and SBus buses. See sysbus(4), isa(4), and sbus(4) for details. For the PCI bus, you can, under certain conditions, call these DDI functions from a high-interrupt context. See pci(4).  

CONTEXT

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

SEE ALSO

ddi_get8(9F), ddi_regs_map_free(9F), ddi_regs_map_setup(9F), ddi_rep_get8(9F), ddi_rep_put8(9F), ddi_device_acc_attr(9S)  

NOTES

The functions described in this manual page previously used symbolic names which specified their data access size; the function names have been changed so they now specify a fixed-width data size. See the following table for the new name equivalents:

Previous NameNew Name
ddi_putbddi_put8
ddi_putwddi_put16
ddi_putlddi_put32
ddi_putllddi_put64


 

Index

NAME
SYNOPSIS
INTERFACE LEVEL
PARAMETERS
DESCRIPTION
CONTEXT
SEE ALSO
NOTES

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Time: 02:39:39 GMT, October 02, 2010