Проект OpenNet: MAN ddi_mem_get8 (9) Ядро (FreeBSD и Linux)

Интерактивная система просмотра системных руководств (man-ов)

ddi_mem_get8 (9)

>> ddi_mem_get8 (9) ( Solaris man: Ядро )

NAME

ddi_mem_get8, ddi_mem_get16, ddi_mem_get32, ddi_mem_get64, ddi_mem_getb, ddi_mem_getl, ddi_mem_getll, ddi_mem_getw - read data from mapped device in the memory space or allocated DMA memory

SYNOPSIS

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



uint8_t ddi_mem_get8(ddi_acc_handle_t handle, uint8_t *dev_addr);

uint16_t ddi_mem_get16(ddi_acc_handle_t handle, uint16_t * dev_addr);

uint32_t ddi_mem_get32(ddi_acc_handle_t handle, uint32_t *dev_addr);

uint64_t ddi_mem_get64(ddi_acc_handle_t handle, uint64_t *dev_addr);

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI). The ddi_mem_get8(), ddi_mem_get16(), ddi_mem_get32(), ddi_mem_get64(), ddi_mem_getb(), ddi_mem_getl(), ddi_mem_getll(), and ddi_mem_getw() functions are obsolete. The ddi_get8(9F) function replaces ddi_mem_get8(). The ddi_get16(9F) function replaces ddi_mem_get16(). The ddi_get32(9F) function replaces ddi_mem_get32(). The ddi_get64(9F) function replaces ddi_mem_get64(). The ddi_get8(9F) function replaces ddi_mem_getb(). The ddi_get32(9F) function replaces ddi_mem_getl(). The ddi_get64(9F) function replaces ddi_mem_getll(). The ddi_get16(9F) function replaces ddi_mem_getw().

PARAMETERS

handle

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

dev_addr

: Base device address.

DESCRIPTION

These routines generate a read of various sizes from memory space or allocated DMA memory. The ddi_mem_get8(), ddi_mem_get16(), ddi_mem_get32(), and ddi_mem_get64() functions read 8 bits, 16 bits, 32 bits and 64 bits of data, respectively, from the device address, dev_addr, in memory space.

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.