axi.h File Reference

Types for the AXI bus. More...

Detailed Description

Types for the AXI bus.

Copyright (C) 2018, Gavin J Stark. All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Header file for the types for an AXI bus, but no modules

Data Structures
struct	t_axi_request
struct	t_axi_write_data
struct	t_axi_write_response
struct	t_axi_read_response

Enumerations
enum	t_axi_burst {   axi_burst_fixed = 0,   axi_burst_incr = 1,   axi_burst_wrap = 2,   axi_burst_reserved = 3 }
enum	t_axi_size {   axi_size_1 = 0,   axi_size_2 = 1,   axi_size_4 = 2,   axi_size_8 = 3,   axi_size_16 = 4,   axi_size_32 = 5,   axi_size_64 = 6,   axi_size_128 = 7 }
enum	t_axi_resp {   axi_resp_okay = 0,   axi_resp_exokay = 1,   axi_resp_slverr = 2,   axi_resp_decerr = 3 }

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Data Structure Documentation

struct t_axi_request

Data Fields
bit[32]	addr
t_axi_burst	burst
bit[4]	cache
bit[12]	id
bit[4]	len
bit[2]	lock
bit[3]	prot
bit[4]	qos
bit[4]	region
t_axi_size	size
bit[4]	user
bit	valid

struct t_axi_write_data

Data Fields
bit[32]	data
bit[12]	id
bit	last
bit[4]	strb
bit[4]	user
bit	valid

struct t_axi_write_response

Data Fields
bit[12]	id
t_axi_resp	resp
bit[4]	user
bit	valid

struct t_axi_read_response

This structure is used to store read response

Data Fields
bit[32]	data
bit[12]	id
bit	last
t_axi_resp	resp
bit[4]	user
bit	valid

Enumeration Type Documentation

enum t_axi_burst

Enumerator
axi_burst_fixed
axi_burst_incr
axi_burst_wrap
axi_burst_reserved

enum t_axi_resp

Enumerator
axi_resp_okay
axi_resp_exokay
axi_resp_slverr
axi_resp_decerr

enum t_axi_size

Enumerator
axi_size_1
axi_size_2
axi_size_4
axi_size_8
axi_size_16
axi_size_32
axi_size_64
axi_size_128

Modules

module axi_master	(	clock	aclk,
		input bit	areset_n,
		output t_axi_request	ar,
		input bit	awready,
		output t_axi_request	aw,
		input bit	arready,
		input bit	wready,
		output t_axi_write_data	w,
		output bit	bready,
		input t_axi_write_response	b,
		output bit	rready,
		input t_axi_read_response	r
	)