rte_io.h File Reference

#include <stdint.h>
#include <rte_common.h>
#include <rte_atomic.h>

Go to the source code of this file.

Functions
static uint8_t	rte_read8_relaxed (const volatile void *addr)
static uint16_t	rte_read16_relaxed (const volatile void *addr)
static uint32_t	rte_read32_relaxed (const volatile void *addr)
static uint64_t	rte_read64_relaxed (const volatile void *addr)
static void	rte_write8_relaxed (uint8_t value, volatile void *addr)
static void	rte_write16_relaxed (uint16_t value, volatile void *addr)
static void	rte_write32_relaxed (uint32_t value, volatile void *addr)
static void	rte_write64_relaxed (uint64_t value, volatile void *addr)
static uint8_t	rte_read8 (const volatile void *addr)
static uint16_t	rte_read16 (const volatile void *addr)
static uint32_t	rte_read32 (const volatile void *addr)
static uint64_t	rte_read64 (const volatile void *addr)
static void	rte_write8 (uint8_t value, volatile void *addr)
static void	rte_write16 (uint16_t value, volatile void *addr)
static void	rte_write32 (uint32_t value, volatile void *addr)
static void	rte_write64 (uint64_t value, volatile void *addr)

Detailed Description

I/O device memory operations

This file defines the generic API for I/O device memory read/write operations

Definition in file rte_io.h.

Function Documentation

rte_read8_relaxed()

static __rte_always_inline uint8_t rte_read8_relaxed ( const volatile void *  addr )

inlinestatic

Read a 8-bit value from I/O device memory address addr.

The relaxed version does not have additional I/O memory barrier, useful in accessing the device registers of integrated controllers which implicitly strongly ordered with respect to memory access.

Parameters

addr	I/O memory address to read the value from

Returns

read value

Definition at line 237 of file rte_io.h.

rte_read16_relaxed()

static __rte_always_inline uint16_t rte_read16_relaxed ( const volatile void *  addr )

inlinestatic

Read a 16-bit value from I/O device memory address addr.

The relaxed version does not have additional I/O memory barrier, useful in accessing the device registers of integrated controllers which implicitly strongly ordered with respect to memory access.

Parameters

addr	I/O memory address to read the value from

Returns

read value

Definition at line 243 of file rte_io.h.

rte_read32_relaxed()

static __rte_always_inline uint32_t rte_read32_relaxed ( const volatile void *  addr )

inlinestatic

Read a 32-bit value from I/O device memory address addr.

The relaxed version does not have additional I/O memory barrier, useful in accessing the device registers of integrated controllers which implicitly strongly ordered with respect to memory access.

Parameters

addr	I/O memory address to read the value from

Returns

read value

Definition at line 249 of file rte_io.h.

rte_read64_relaxed()

static __rte_always_inline uint64_t rte_read64_relaxed ( const volatile void *  addr )

inlinestatic

Read a 64-bit value from I/O device memory address addr.

The relaxed version does not have additional I/O memory barrier, useful in accessing the device registers of integrated controllers which implicitly strongly ordered with respect to memory access.

Parameters

addr	I/O memory address to read the value from

Returns

read value

Definition at line 255 of file rte_io.h.

rte_write8_relaxed()

static __rte_always_inline void rte_write8_relaxed ( uint8_t  value, volatile void *  addr  )

inlinestatic

Write a 8-bit value to I/O device memory address addr.

The relaxed version does not have additional I/O memory barrier, useful in accessing the device registers of integrated controllers which implicitly strongly ordered with respect to memory access.

Parameters

value	Value to write
addr	I/O memory address to write the value to

Definition at line 261 of file rte_io.h.

rte_write16_relaxed()

static __rte_always_inline void rte_write16_relaxed ( uint16_t  value, volatile void *  addr  )

inlinestatic

Write a 16-bit value to I/O device memory address addr.

The relaxed version does not have additional I/O memory barrier, useful in accessing the device registers of integrated controllers which implicitly strongly ordered with respect to memory access.

Parameters

value	Value to write
addr	I/O memory address to write the value to

Definition at line 267 of file rte_io.h.

rte_write32_relaxed()

static __rte_always_inline void rte_write32_relaxed ( uint32_t  value, volatile void *  addr  )

inlinestatic

Write a 32-bit value to I/O device memory address addr.

The relaxed version does not have additional I/O memory barrier, useful in accessing the device registers of integrated controllers which implicitly strongly ordered with respect to memory access.

Parameters

value	Value to write
addr	I/O memory address to write the value to

Definition at line 273 of file rte_io.h.

rte_write64_relaxed()

static __rte_always_inline void rte_write64_relaxed ( uint64_t  value, volatile void *  addr  )

inlinestatic

Write a 64-bit value to I/O device memory address addr.

The relaxed version does not have additional I/O memory barrier, useful in accessing the device registers of integrated controllers which implicitly strongly ordered with respect to memory access.

Parameters

value	Value to write
addr	I/O memory address to write the value to

Definition at line 279 of file rte_io.h.

rte_read8()

static __rte_always_inline uint8_t rte_read8 ( const volatile void *  addr )

inlinestatic

Read a 8-bit value from I/O device memory address addr.

Parameters

addr	I/O memory address to read the value from

Returns

read value

Definition at line 285 of file rte_io.h.

rte_read16()

static __rte_always_inline uint16_t rte_read16 ( const volatile void *  addr )

inlinestatic

Read a 16-bit value from I/O device memory address addr.

Parameters

addr	I/O memory address to read the value from

Returns

read value

Definition at line 294 of file rte_io.h.

rte_read32()

static __rte_always_inline uint32_t rte_read32 ( const volatile void *  addr )

inlinestatic

Read a 32-bit value from I/O device memory address addr.

Parameters

addr	I/O memory address to read the value from

Returns

read value

Definition at line 303 of file rte_io.h.

rte_read64()

static __rte_always_inline uint64_t rte_read64 ( const volatile void *  addr )

inlinestatic

Read a 64-bit value from I/O device memory address addr.

Parameters

addr	I/O memory address to read the value from

Returns

read value

Definition at line 312 of file rte_io.h.

rte_write8()

static __rte_always_inline void rte_write8 ( uint8_t  value, volatile void *  addr  )

inlinestatic

Write a 8-bit value to I/O device memory address addr.

Parameters

value	Value to write
addr	I/O memory address to write the value to

Definition at line 321 of file rte_io.h.

rte_write16()

static __rte_always_inline void rte_write16 ( uint16_t  value, volatile void *  addr  )

inlinestatic

Write a 16-bit value to I/O device memory address addr.

Parameters

value	Value to write
addr	I/O memory address to write the value to

Definition at line 328 of file rte_io.h.

rte_write32()

static __rte_always_inline void rte_write32 ( uint32_t  value, volatile void *  addr  )

inlinestatic

Write a 32-bit value to I/O device memory address addr.

Parameters

value	Value to write
addr	I/O memory address to write the value to

Definition at line 335 of file rte_io.h.

rte_write64()

static __rte_always_inline void rte_write64 ( uint64_t  value, volatile void *  addr  )

inlinestatic

Write a 64-bit value to I/O device memory address addr.

Parameters

value	Value to write
addr	I/O memory address to write the value to

Definition at line 342 of file rte_io.h.