ddi_mem_get8(9F) Kernel Functions for Drivers ddi_mem_get8(9F)NAME
ddi_mem_get8, ddi_mem_get16, ddi_mem_get32, ddi_mem_get64,
ddi_mem_getw, ddi_mem_getl, ddi_mem_getll, ddi_mem_getb - 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).
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 char‐
acteristics.
CONTEXT
These functions can be called from user, kernel, or interrupt context.
SEE ALSOddi_mem_put8(9F), ddi_mem_rep_get8(9F), ddi_mem_rep_put8(9F),
ddi_regs_map_setup(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 fol‐
lowing table for the new name equivalents:
┌───────────────────────────────────────────────────────────┐
│Previous Name New Name │
│ddi_mem_getb ddi_mem_get8 │
│ddi_mem_getw ddi_mem_get16 │
│ddi_mem_getl ddi_mem_get32 │
│ddi_mem_getll ddi_mem_get64 │
└───────────────────────────────────────────────────────────┘
SunOS 5.10 30 Sep 1996 ddi_mem_get8(9F)
