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ddi_mem_rep_get8 (9)

>> ddi_mem_rep_get8 (9) ( Solaris man: Ядро )

NAME

ddi_mem_rep_get8, ddi_mem_rep_get16, ddi_mem_rep_get32, ddi_mem_rep_get64, ddi_mem_rep_getb, ddi_mem_rep_getl, ddi_mem_rep_getll, ddi_mem_rep_getw - read multiple data from mapped device in the memory space or allocated DMA memory

SYNOPSIS

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



void ddi_mem_rep_get8(ddi_acc_handle_t handle, 
    uint8_t *host_addr, uint8_t *dev_addr, size_t repcount, 
    uint_t flags);

void ddi_mem_rep_get16(ddi_acc_handle_t handle, 
    uint16_t *host_addr, uint16_t *dev_addr, size_t repcount, 
    uint_t flags);

void ddi_mem_rep_get32(ddi_acc_handle_t handle, 
    uint32_t *host_addr, uint32_t *dev_addr, size_t repcount, 
    uint_t flags);

void ddi_mem_rep_get64(ddi_acc_handle_t handle, 
    uint64_t *host_addr, uint64_t *dev_addr, size_t repcount, 
    uint_t flags);

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI). The ddi_mem_rep_get8(), ddi_mem_rep_get16(), ddi_mem_rep_get32(), ddi_mem_rep_get64(), ddi_mem_rep_getb(), ddi_mem_rep_getl(), ddi_mem_rep_getll(), and ddi_mem_rep_getw() functions are obsolete. The ddi_rep_get8(9F) function replaces ddi_mem_rep_get8(). The ddi_rep_get16(9F) function replaces ddi_mem_rep_get16(). The ddi_rep_get32(9F) function replaces ddi_mem_rep_get32(). The ddi_rep_get64(9F) function replaces ddi_mem_rep_get64(). The ddi_rep_get8(9F) function replaces ddi_mem_rep_getb(). The ddi_rep_get32(9F) function replaces ddi_mem_rep_getl(). The ddi_rep_get64(9F) function replaces ddi_mem_rep_getll(). The ddi_rep_get16(9F) function replaces ddi_mem_rep_getw().

PARAMETERS

handle

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

host_addr

: Base host address.

dev_addr

: Base device address.

repcount

: Number of data accesses to perform.

flags

Device address flags:

DDI_DEV_AUTOINCR

: Automatically increment the device address, dev_addr, during data accesses.

DDI_DEV_NO_AUTOINCR

: Do not advance the device address, dev_addr, during data accesses.

DESCRIPTION

These routines generate multiple reads from memory space or allocated DMA memory. repcount data is copied from the device address, dev_addr, in memory space to the host address, host_addr. For each input datum, the ddi_mem_rep_get8(), ddi_mem_rep_get16(), ddi_mem_rep_get32(), and ddi_mem_rep_get64() functions read 8 bits, 16 bits, 32 bits and 64 bits of data, respectively, from the device address, dev_addr. dev_addr and host_addr must be aligned to the datum boundary described by the function.

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.

When the flags argument is set to DDI_DEV_AUTOINCR, these functions will treat the device address, dev_addr, as a memory buffer location on the device and increments its address on the next input datum. However, when the flags argument is set to DDI_DEV_NO_AUTOINCR, the same device address will be used for every datum access. For example, this flag may be useful when reading from a data register.