ddi_mem_rep_putb(9F)

NAME

ddi_mem_rep_putb, ddi_mem_rep_putw, ddi_mem_rep_putl, ddi_mem_rep_putll − write multiple data to mapped device in the memory space or allocated DMA memory

SYNOPSIS

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

void ddi_mem_rep_putb(ddi_acc_handle_t handle, uchar_t ∗host_addr,

uchar_t ∗dev_addr, uint_t repcount, ulong_t flags);

void ddi_mem_rep_putw(ddi_acc_handle_t handle, ushort_t ∗host_addr,

ushort_t ∗dev_addr, uint_t repcount, ulong_t flags);

void ddi_mem_rep_putl(ddi_acc_handle_t handle, ulong_t ∗host_addr,

ulong_t ∗dev_addr, uint_t repcount, ulong_t flags);

void ddi_mem_rep_putll(ddi_acc_handle_t handle, unsigned long long ∗host_addr,

unsigned long long ∗dev_addr, uint_t repcount, ulong_t flags);

ARGUMENTS

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.

INTERFACE LEVEL

Solaris DDI specific (Solaris DDI).

DESCRIPTION

These routines generate multiple writes to memory space or allocated DMA memory. repcount data is copied from the host address, host_addr, to the device address, dev_addr, in memory space. For each input datum, the ddi_mem_rep_putb(), ddi_mem_rep_putw(), ddi_mem_rep_putl(), and ddi_mem_rep_putll() functions write 8 bits, 16 bits, 32 bits and 64 bits of data, respectively, to the device address. 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 writing from a data register.

CONTEXT

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

Museum

Related Articles