NAME

ddi_mem_rep_get8, ddi_mem_rep_get16, ddi_mem_rep_get32, ddi_mem_rep_get64, - 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

illumos DDI specific (illumos 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().

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.

CONTEXT

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

ATTRIBUTES

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Interface Stability	Obsolete